[alsa-devel] DP audio API changes for identifying displays connected to a port
An additional parameter has been added to the API's between i915 and audio drivers to identify display devices that can be connected to the same port. Currently only the port identity is being shared, but this is not sufficient as multiple displays can be driven from the same port (E.g. DP MST). This patch makes the API changes with dummy changes in the audio driver (Thanks Libin). Implementation to fully enable DP MST audio will follow later.
Dhinakaran Pandiyan(1): drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops - int (*sync_audio_rate)(struct device *, int port, int rate); + int (*sync_audio_rate)(struct device *, int port, int dev_id, + int rate);
- int (*get_eld)(struct device *, int port, bool *enabled, - unsigned char *buf, int max_bytes); + int (*get_eld)(struct device *, int port, int dev_id, + bool *enabled, unsigned char *buf, int max_bytes);
struct i915_audio_component_audio_ops - void (*pin_eld_notify)(void *audio_ptr, int port); + void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com --- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS]; + struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port; + enum pipe pipe = crtc->pipe; + int dev_id = -1; +
connector = drm_select_eld(encoder); if (!connector) @@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
+ if (intel_encoder->type == INTEL_OUTPUT_DP_MST) + dev_id = pipe; + mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector; + /* referred in audio callbacks */ - dev_priv->dig_port_map[port] = intel_encoder; + dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) - acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); + acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, + (int) port, dev_id); }
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base; + struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port; + enum pipe pipe = crtc->pipe; + int dev_id = -1; + + if (intel_encoder->type == INTEL_OUTPUT_DP_MST) + dev_id = pipe;
if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL; - dev_priv->dig_port_map[port] = NULL; + dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) - acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); + acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, + (int) port, dev_id); }
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev, - int port, int rate) +static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[], + int port, int dev_id) +{ + + enum pipe pipe; + struct drm_encoder *encoder; + + if (dev_id >= 0 && dev_id < I915_MAX_PIPES) + return av_enc_map[dev_id]; + + for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) { + + if (!av_enc_map[pipe]) + continue; + + encoder = &av_enc_map[pipe]->base; + if (port == enc_to_dig_port(encoder)->port) + return av_enc_map[pipe]; + } + + return NULL; + +} + +static int i915_audio_component_sync_audio_rate(struct device *dev, int port, + int dev_id, int rate) { struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex); + /* 1. get the pipe */ - intel_encoder = dev_priv->dig_port_map[port]; - /* intel_encoder might be NULL for DP MST */ + intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; } + crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) { @@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port, - bool *enabled, + int dev_id, bool *enabled, unsigned char *buf, int max_bytes) { struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
+ mutex_lock(&dev_priv->av_mutex); - intel_encoder = dev_priv->dig_port_map[port]; - /* intel_encoder might be NULL for DP MST */ - if (intel_encoder) { - ret = 0; - *enabled = intel_encoder->audio_connector != NULL; - if (*enabled) { - eld = intel_encoder->audio_connector->eld; - ret = drm_eld_size(eld); - memcpy(buf, eld, min(max_bytes, ret)); - } + + intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); + if (!intel_encoder) { + mutex_unlock(&dev_priv->av_mutex); + return ret; + } + + ret = 0; + *enabled = intel_encoder->audio_connector != NULL; + if (*enabled) { + eld = intel_encoder->audio_connector->eld; + ret = drm_eld_size(eld); + memcpy(buf, eld, min(max_bytes, ret)); }
mutex_unlock(&dev_priv->av_mutex); diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */ - int (*sync_audio_rate)(struct device *, int port, int rate); + int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */ - int (*get_eld)(struct device *, int port, bool *enabled, + int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */ - void (*pin_eld_notify)(void *audio_ptr, int port); + void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id); };
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, + int dev_id, int rate); +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec, - hda_nid_t nid, int rate) + hda_nid_t nid, int dev_id, int rate) { return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, - bool *audio_enabled, char *buffer, - int max_bytes) + int dev_id, bool *audio_enabled, + char *buffer, int max_bytes) { return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid) * This function sets N/CTS value based on the given sample rate. * Returns zero for success, or a negative error code. */ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, + int dev_id, int rate) { struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL; - return acomp->ops->sync_audio_rate(acomp->dev, port, rate); + return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate); } EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate); * thus it may be over @max_bytes. If it's over @max_bytes, it implies * that only a part of ELD bytes have been fetched. */ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL; - return acomp->ops->get_eld(acomp->dev, port, audio_enabled, + return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false; - size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, + size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) { @@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec)) - snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate); + snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1, + runtime->rate);
non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock); @@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid;
On Wed, 03 Aug 2016 04:14:30 +0200, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
OK, so the explicit dev_id will be passed in future change in the audio side, right? It'd be good to write up the grand plan.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
Better to have a comment for this field.
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];
Actually dev_id >= I915_MAX_PIPES is an invalid call, and worth to catch with WARN_ON() and bail out.
thanks,
Takashi
On Wed, 2016-08-03 at 15:53 +0200, Takashi Iwai wrote:
On Wed, 03 Aug 2016 04:14:30 +0200, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
OK, so the explicit dev_id will be passed in future change in the audio side, right? It'd be good to write up the grand plan.
Yes, that's right. I will explain that and copy the cover-letter text here.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
Better to have a comment for this field.
Will add one.
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];Actually dev_id >= I915_MAX_PIPES is an invalid call, and worth to catch with WARN_ON() and bail out.
Sure, thanks for the review.
thanks,
Takashi _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
On Wed, 2016-08-03 at 22:08 +0300, Ville Syrjälä wrote:
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
There was quite a bit of back and forth on this. "pipe" seemed to tie us to the gfx hardware architecture. In case, there is no 1:1 mapping from pipes to encoders, this will get confusing as i915 audio registers (E.g.HSW_AUD_PIN_ELD_CP_VLD) are encoder based. Whereas, dev_id is generic - HDA spec calls them "devices" or "device entry"
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
On Wed, Aug 03, 2016 at 07:43:06PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 22:08 +0300, Ville Syrjälä wrote:
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
There was quite a bit of back and forth on this. "pipe" seemed to tie us to the gfx hardware architecture. In case, there is no 1:1 mapping from pipes to encoders, this will get confusing as i915 audio registers (E.g.HSW_AUD_PIN_ELD_CP_VLD) are encoder based.
I'm not following. Looking at the current i915 audio code, on HSW+ everything is pipe based.
Whereas, dev_id is generic - HDA spec calls them "devices" or "device entry"
Generic and totally unclear what it means from graphics side.
pipe and port are the only things we really have in i915. If those aren't good enough for the audio side, then I think we should have some decent code to remap between the pipe+port vs. whatever audio side id is needed. I don't really care on which side of the border such code would live, as long as it's clear what it's doing.
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
On Wed, 2016-08-03 at 23:28 +0300, Ville Syrjälä wrote:
On Wed, Aug 03, 2016 at 07:43:06PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 22:08 +0300, Ville Syrjälä wrote:
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
There was quite a bit of back and forth on this. "pipe" seemed to tie us to the gfx hardware architecture. In case, there is no 1:1 mapping from pipes to encoders, this will get confusing as i915 audio registers (E.g.HSW_AUD_PIN_ELD_CP_VLD) are encoder based.
I'm not following. Looking at the current i915 audio code, on HSW+ everything is pipe based.
Although we pass "pipe" to these macros, the definition here and in the BSpec seem to indicate they are based on the encoder.
Eg: #define HSW_AUD_PIN_ELD_CP_VLD _MMIO(0x650c0) #define AUDIO_INACTIVE(trans) ((1 << 3) << ((trans) * 4)) #define AUDIO_OUTPUT_ENABLE(trans) ((1 << 2) << ((trans) * 4)) #define AUDIO_CP_READY(trans) ((1 << 1) << ((trans) * 4)) #define AUDIO_ELD_VALID(trans) ((1 << 0) << ((trans) * 4))
Whereas, dev_id is generic - HDA spec calls them "devices" or "device entry"
Generic and totally unclear what it means from graphics side.
pipe and port are the only things we really have in i915. If those aren't good enough for the audio side, then I think we should have some decent code to remap between the pipe+port vs. whatever audio side id is needed. I don't really care on which side of the border such code would live, as long as it's clear what it's doing.
I agree, dev_id can be misleading within i915.
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
On Wed, Aug 03, 2016 at 09:42:53PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 23:28 +0300, Ville Syrjälä wrote:
On Wed, Aug 03, 2016 at 07:43:06PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 22:08 +0300, Ville Syrjälä wrote:
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
There was quite a bit of back and forth on this. "pipe" seemed to tie us to the gfx hardware architecture. In case, there is no 1:1 mapping from pipes to encoders, this will get confusing as i915 audio registers (E.g.HSW_AUD_PIN_ELD_CP_VLD) are encoder based.
I'm not following. Looking at the current i915 audio code, on HSW+ everything is pipe based.
Although we pass "pipe" to these macros, the definition here and in the BSpec seem to indicate they are based on the encoder.
Eg: #define HSW_AUD_PIN_ELD_CP_VLD _MMIO(0x650c0) #define AUDIO_INACTIVE(trans) ((1 << 3) << ((trans) * 4)) #define AUDIO_OUTPUT_ENABLE(trans) ((1 << 2) << ((trans) * 4)) #define AUDIO_CP_READY(trans) ((1 << 1) << ((trans) * 4)) #define AUDIO_ELD_VALID(trans) ((1 << 0) << ((trans) * 4))
That's transcoder, not encoder. transcoder is the tail end of the pipe. For all the external ports transcoder==pipe, and for port A there is the special edp transcoder which can be fed by any pipe. The edp transcoder doesn't support audio though, and I can't see anything in the spec to suggest that it would gain audio capabilities, in the near future at least. So from that point of view passing around the pipe would seem like a safe approach.
We could of course pass around transcoder instead of pipe. Since we don't ever need to enable audio on the edp transcoder, we don't even have to worry about what number we assign to it. And hence it is actually the same as passing the pipe, except in name.
Whereas, dev_id is generic - HDA spec calls them "devices" or "device entry"
Generic and totally unclear what it means from graphics side.
pipe and port are the only things we really have in i915. If those aren't good enough for the audio side, then I think we should have some decent code to remap between the pipe+port vs. whatever audio side id is needed. I don't really care on which side of the border such code would live, as long as it's clear what it's doing.
I agree, dev_id can be misleading within i915.
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
On Thu, 2016-08-04 at 15:49 +0300, Ville Syrjälä wrote:
On Wed, Aug 03, 2016 at 09:42:53PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 23:28 +0300, Ville Syrjälä wrote:
On Wed, Aug 03, 2016 at 07:43:06PM +0000, Pandiyan, Dhinakaran wrote:
On Wed, 2016-08-03 at 22:08 +0300, Ville Syrjälä wrote:
On Tue, Aug 02, 2016 at 07:14:30PM -0700, Dhinakaran Pandiyan wrote:
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
Does the term 'dev_id' have some special meaning on the audio side? On the i915 side things would be less confusing if we just called it 'pipe'.
There was quite a bit of back and forth on this. "pipe" seemed to tie us to the gfx hardware architecture. In case, there is no 1:1 mapping from pipes to encoders, this will get confusing as i915 audio registers (E.g.HSW_AUD_PIN_ELD_CP_VLD) are encoder based.
I'm not following. Looking at the current i915 audio code, on HSW+ everything is pipe based.
Although we pass "pipe" to these macros, the definition here and in the BSpec seem to indicate they are based on the encoder.
Eg: #define HSW_AUD_PIN_ELD_CP_VLD _MMIO(0x650c0) #define AUDIO_INACTIVE(trans) ((1 << 3) << ((trans) * 4)) #define AUDIO_OUTPUT_ENABLE(trans) ((1 << 2) << ((trans) * 4)) #define AUDIO_CP_READY(trans) ((1 << 1) << ((trans) * 4)) #define AUDIO_ELD_VALID(trans) ((1 << 0) << ((trans) * 4))
That's transcoder, not encoder. transcoder is the tail end of the pipe. For all the external ports transcoder==pipe, and for port A there is the special edp transcoder which can be fed by any pipe. The edp transcoder doesn't support audio though, and I can't see anything in the spec to suggest that it would gain audio capabilities, in the near future at least. So from that point of view passing around the pipe would seem like a safe approach.
We could of course pass around transcoder instead of pipe. Since we don't ever need to enable audio on the edp transcoder, we don't even have to worry about what number we assign to it. And hence it is actually the same as passing the pipe, except in name.
Thanks for the detailed explanation, makes sense to change it to "pipe". I will send out a new version. Do you recommend I send this patch with "Prep. for DP audio MST support" series (https://lists.freedesktop.org/archives/intel-gfx/2016-August/102399.html)? This patch depends on the some of the patches in that. I had separated this patch out because of the audio driver changes in this.
Whereas, dev_id is generic - HDA spec calls them "devices" or "device entry"
Generic and totally unclear what it means from graphics side.
pipe and port are the only things we really have in i915. If those aren't good enough for the audio side, then I think we should have some decent code to remap between the pipe+port vs. whatever audio side id is needed. I don't really care on which side of the border such code would live, as long as it's clear what it's doing.
I agree, dev_id can be misleading within i915.
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--------- include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/*
- NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes){ struct drm_i915_private *dev_priv = dev_to_i915(dev); @@ -710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port, dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int rate); /**
- @get_eld: fill the audio state and ELD bytes for the given port
@@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes);
};
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id, audio_enabled, buffer, max_bytes);
} EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime->rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
-----Original Message----- From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of Dhinakaran Pandiyan Sent: Wednesday, August 3, 2016 10:15 AM To: intel-gfx@lists.freedesktop.org Cc: alsa-devel@alsa-project.org; tiwai@suse.de; libin.yang@linux.intel.com; Pandiyan, Dhinakaran dhinakaran.pandiyan@intel.com Subject: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--
include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
We may still need save the port number info. In non-MST mode, device entry means nothing. This means av_enc_map[pipe] may not get the right intel_encoder
Regards, Libin
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes) {+750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int
+rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id,
audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime-rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Fri, 2016-08-05 at 02:35 +0000, Yang, Libin wrote:
-----Original Message----- From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of Dhinakaran Pandiyan Sent: Wednesday, August 3, 2016 10:15 AM To: intel-gfx@lists.freedesktop.org Cc: alsa-devel@alsa-project.org; tiwai@suse.de; libin.yang@linux.intel.com; Pandiyan, Dhinakaran dhinakaran.pandiyan@intel.com Subject: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82 +++++++++++++++++++++++++++++--
include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
We may still need save the port number info. In non-MST mode, device entry means nothing. This means av_enc_map[pipe] may not get the right intel_encoder
Regards, Libin
We find the encoder using port in get_saved_encoder()
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes) {+750,21 @@ static int i915_audio_component_get_eld(struct device *dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int
+rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int dev_id, bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id, rate);
} EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id,
audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime-rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
-----Original Message----- From: Pandiyan, Dhinakaran Sent: Friday, August 5, 2016 1:57 PM To: Yang, Libin libin.yang@intel.com Cc: intel-gfx@lists.freedesktop.org; tiwai@suse.de; alsa-devel@alsa- project.org; libin.yang@linux.intel.com Subject: Re: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
On Fri, 2016-08-05 at 02:35 +0000, Yang, Libin wrote:
-----Original Message----- From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of Dhinakaran Pandiyan Sent: Wednesday, August 3, 2016 10:15 AM To: intel-gfx@lists.freedesktop.org Cc: alsa-devel@alsa-project.org; tiwai@suse.de; libin.yang@linux.intel.com; Pandiyan, Dhinakaran dhinakaran.pandiyan@intel.com Subject: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's
meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int- dev_id);
This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82
+++++++++++++++++++++++++++++--
include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
We may still need save the port number info. In non-MST mode, device entry means nothing. This means av_enc_map[pipe] may not get the right intel_encoder
Regards, Libin
We find the encoder using port in get_saved_encoder()
It seems it still can't get the encoder for SST/HDMI as pipe may always be -1 or 0 for SST/HDMI?
Regards, Libin
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, +int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes) {+750,21 @@ static int i915_audio_component_get_eld(struct device +*dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int
+rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool
+*enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes);
int
snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id,
+rate); } EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id,
audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime-rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int +dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Fri, 2016-08-05 at 06:21 +0000, Yang, Libin wrote:
-----Original Message----- From: Pandiyan, Dhinakaran Sent: Friday, August 5, 2016 1:57 PM To: Yang, Libin libin.yang@intel.com Cc: intel-gfx@lists.freedesktop.org; tiwai@suse.de; alsa-devel@alsa- project.org; libin.yang@linux.intel.com Subject: Re: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
On Fri, 2016-08-05 at 02:35 +0000, Yang, Libin wrote:
-----Original Message----- From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of Dhinakaran Pandiyan Sent: Wednesday, August 3, 2016 10:15 AM To: intel-gfx@lists.freedesktop.org Cc: alsa-devel@alsa-project.org; tiwai@suse.de; libin.yang@linux.intel.com; Pandiyan, Dhinakaran dhinakaran.pandiyan@intel.com Subject: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's
meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int- dev_id);
This patch makes dummy changes in the audio drivers for build to succeed.
Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82
+++++++++++++++++++++++++++++--
include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
We may still need save the port number info. In non-MST mode, device entry means nothing. This means av_enc_map[pipe] may not get the right intel_encoder
Regards, Libin
We find the encoder using port in get_saved_encoder()
It seems it still can't get the encoder for SST/HDMI as pipe may always be -1 or 0 for SST/HDMI?
Regards, Libin
The audio driver sends dev_id=-1, but the correct "port" for SST. So, we loop through all the saved encoders and choose the one that is tied to "port"
for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe]) continue;
encoder = &av_enc_map[pipe]->base; if (port == enc_to_dig_port(encoder)->port) return av_enc_map[pipe]; }
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr,
(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct intel_encoder *av_enc_map[],
int port, int dev_id)+{
- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device *dev, +int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes) {+750,21 @@ static int i915_audio_component_get_eld(struct device +*dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map, port,
dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id, int
+rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool
+*enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes);
int
snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id, int rate){ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool *audio_enabled,char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port, dev_id,
+rate); } EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id,
audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid, -1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) {
@@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime-rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int +dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
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-----Original Message----- From: Pandiyan, Dhinakaran Sent: Friday, August 5, 2016 2:42 PM To: Yang, Libin libin.yang@intel.com Cc: intel-gfx@lists.freedesktop.org; tiwai@suse.de; alsa-devel@alsa- project.org; libin.yang@linux.intel.com Subject: Re: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
On Fri, 2016-08-05 at 06:21 +0000, Yang, Libin wrote:
-----Original Message----- From: Pandiyan, Dhinakaran Sent: Friday, August 5, 2016 1:57 PM To: Yang, Libin libin.yang@intel.com Cc: intel-gfx@lists.freedesktop.org; tiwai@suse.de; alsa-devel@alsa- project.org; libin.yang@linux.intel.com Subject: Re: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
On Fri, 2016-08-05 at 02:35 +0000, Yang, Libin wrote:
-----Original Message----- From: Intel-gfx [mailto:intel-gfx-bounces@lists.freedesktop.org] On Behalf Of Dhinakaran Pandiyan Sent: Wednesday, August 3, 2016 10:15 AM To: intel-gfx@lists.freedesktop.org Cc: alsa-devel@alsa-project.org; tiwai@suse.de; libin.yang@linux.intel.com; Pandiyan, Dhinakaran dhinakaran.pandiyan@intel.com Subject: [Intel-gfx] [PATCH] drm/i915/dp: DP audio API changes for MST
DP MST provides the capability to send multiple video and audio streams via one single port. This requires the API's between i915 and audio drivers to distinguish between audio capable displays connected to a port. This patch adds this support via an additional parameter 'int dev_id'. The existing parameter 'port' does not change it's
meaning.
dev_id = MST : pipe that the stream originates from Non-MST : -1
Affected APIs: struct i915_audio_component_ops
int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
int rate);
int (*get_eld)(struct device *, int port, bool *enabled,unsigned char *buf, int max_bytes);
int (*get_eld)(struct device *, int port, int dev_id,bool *enabled, unsigned char *buf, int max_bytes);struct i915_audio_component_audio_ops
void (*pin_eld_notify)(void *audio_ptr, int port);
void (*pin_eld_notify)(void *audio_ptr, int port, int- dev_id);
This patch makes dummy changes in the audio drivers for build to
succeed.
Signed-off-by: Dhinakaran Pandiyan
dhinakaran.pandiyan@intel.com
drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_audio.c | 82
+++++++++++++++++++++++++++++--
include/drm/i915_component.h | 6 +-- include/sound/hda_i915.h | 11 ++--- sound/hda/hdac_i915.c | 9 +++-- sound/pci/hda/patch_hdmi.c | 7 ++-- 6 files changed, 82 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 65ada5d..8e4c8c8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2054,7 +2054,7 @@ struct drm_i915_private { /* perform PHY state sanity checks? */ bool chv_phy_assert[2];
- struct intel_encoder *dig_port_map[I915_MAX_PORTS];
- struct intel_encoder *av_enc_map[I915_MAX_PIPES];
We may still need save the port number info. In non-MST mode, device entry means nothing. This means av_enc_map[pipe] may not get the right intel_encoder
Regards, Libin
We find the encoder using port in get_saved_encoder()
It seems it still can't get the encoder for SST/HDMI as pipe may always be -1 or 0 for SST/HDMI?
Regards, Libin
The audio driver sends dev_id=-1, but the correct "port" for SST. So, we loop through all the saved encoders and choose the one that is tied to "port"
for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe]) continue; encoder = &av_enc_map[pipe]->base; if (port == enc_to_dig_port(encoder)->port) return av_enc_map[pipe];}
Get your mean. Thanks.
/* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 8c493de..cbe44c8 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -500,6 +500,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
connector = drm_select_eld(encoder); if (!connector)
@@ -522,14 +525,19 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode);
- if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;- mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = connector;
- /* referred in audio callbacks */
- dev_priv->dig_port_map[port] = intel_encoder;
dev_priv->av_enc_map[pipe] = intel_encoder; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp-audio_ops-
audio_ptr,
(int) port, dev_id);}
/** @@ -542,22 +550,29 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) void intel_audio_codec_disable(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base;
struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct i915_audio_component *acomp = dev_priv->audio_component; struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); enum port port = intel_dig_port->port;
enum pipe pipe = crtc->pipe;
int dev_id = -1;
if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
dev_id = pipe;if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder);
mutex_lock(&dev_priv->av_mutex); intel_encoder->audio_connector = NULL;
- dev_priv->dig_port_map[port] = NULL;
dev_priv->av_enc_map[pipe] = NULL; mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops-
pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops-audio_ptr, (int) port);
acomp->audio_ops->pin_eld_notify(acomp-audio_ops-
audio_ptr,
(int) port, dev_id);}
/** @@ -628,8 +643,32 @@ static int i915_audio_component_get_cdclk_freq(struct device *dev) return dev_priv->cdclk_freq; }
-static int i915_audio_component_sync_audio_rate(struct device *dev,
int port, int rate)+static struct intel_encoder *get_saved_encoder(struct +intel_encoder *av_enc_map[],
int port, int dev_id) {- enum pipe pipe;
- struct drm_encoder *encoder;
- if (dev_id >= 0 && dev_id < I915_MAX_PIPES)
return av_enc_map[dev_id];- for (pipe = PIPE_A; pipe < I915_MAX_PIPES; pipe++) {
if (!av_enc_map[pipe])continue;encoder = &av_enc_map[pipe]->base;if (port == enc_to_dig_port(encoder)->port)return av_enc_map[pipe];- }
- return NULL;
+}
+static int i915_audio_component_sync_audio_rate(struct device +*dev, int port,
int dev_id, int rate){ struct drm_i915_private *dev_priv = dev_to_i915(dev); struct intel_encoder *intel_encoder; @@ -649,15 +688,16 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0;
mutex_lock(&dev_priv->av_mutex);
- /* 1. get the pipe */
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map,
port,
dev_id); if (!intel_encoder || !intel_encoder->base.crtc || intel_encoder->type != INTEL_OUTPUT_HDMI) { DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); err = -ENODEV; goto unlock; }
- crtc = to_intel_crtc(intel_encoder->base.crtc); pipe = crtc->pipe; if (pipe == INVALID_PIPE) {
@@ -702,7 +742,7 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, }
static int i915_audio_component_get_eld(struct device *dev, int port,
bool *enabled,
int dev_id, bool *enabled, unsigned char *buf, int max_bytes) {-710,17 +750,21 @@ static int i915_audio_component_get_eld(struct device +*dev, int port, const u8 *eld; int ret = -EINVAL;
- mutex_lock(&dev_priv->av_mutex);
- intel_encoder = dev_priv->dig_port_map[port];
- /* intel_encoder might be NULL for DP MST */
- if (intel_encoder) {
ret = 0;*enabled = intel_encoder->audio_connector != NULL;if (*enabled) {eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
- intel_encoder = get_saved_encoder(dev_priv->av_enc_map,
port,
dev_id);
if (!intel_encoder) {
mutex_unlock(&dev_priv->av_mutex);return ret;}
ret = 0;
*enabled = intel_encoder->audio_connector != NULL;
if (*enabled) {
eld = intel_encoder->audio_connector->eld;ret = drm_eld_size(eld);memcpy(buf, eld, min(max_bytes, ret));}
mutex_unlock(&dev_priv->av_mutex);
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index b46fa0e..1419c98 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -64,7 +64,7 @@ struct i915_audio_component_ops { * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */
- int (*sync_audio_rate)(struct device *, int port, int rate);
- int (*sync_audio_rate)(struct device *, int port, int dev_id,
+int rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * @@ -77,7 +77,7 @@ struct i915_audio_component_ops { * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */
- int (*get_eld)(struct device *, int port, bool *enabled,
- int (*get_eld)(struct device *, int port, int dev_id, bool
+*enabled, unsigned char *buf, int max_bytes); };
@@ -97,7 +97,7 @@ struct i915_audio_component_audio_ops { * status accordingly (even when the HDA controller is in power save * mode). */
- void (*pin_eld_notify)(void *audio_ptr, int port);
- void (*pin_eld_notify)(void *audio_ptr, int port, int dev_id);
};
/** diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 796cabf..5ab972e 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,8 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); void snd_hdac_i915_set_bclk(struct hdac_bus *bus); -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate); -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t
nid,
int dev_id, int rate);+int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes);
int
snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); @@ -29,13 +30,13 @@ static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus) { } static inline int snd_hdac_sync_audio_rate(struct hdac_device
*codec,
hda_nid_t nid, int rate)
hda_nid_t nid, int dev_id,int rate)
{ return 0; } static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
bool *audio_enabled, char *buffer,int max_bytes)
int dev_id, bool*audio_enabled,
char *buffer, int max_bytes){ return -ENODEV; } diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index c9af022..6ea63ac 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -201,7 +201,8 @@ static int pin2port(struct hdac_device *codec, hda_nid_t pin_nid)
- This function sets N/CTS value based on the given sample rate.
- Returns zero for success, or a negative error code.
*/ -int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) +int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t
nid,
int dev_id, int rate){ struct hdac_bus *bus = codec->bus; struct i915_audio_component *acomp = bus->audio_component; @@ -212,7 +213,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, int rate) port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
- return acomp->ops->sync_audio_rate(acomp->dev, port,
dev_id,
+rate); } EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -236,7 +237,7 @@
EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
- thus it may be over @max_bytes. If it's over @max_bytes, it implies
- that only a part of ELD bytes have been fetched.
*/ -int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, +int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t +nid, int dev_id, bool *audio_enabled, char *buffer, int max_bytes) { struct hdac_bus *bus = codec->bus; @@ -249,7 +250,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, port = pin2port(codec, nid); if (port < 0) return -EINVAL;
- return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
- return acomp->ops->get_eld(acomp->dev, port, dev_id,
audio_enabled, buffer, max_bytes); } EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8..077d48a 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1485,7 +1485,7 @@ static void sync_eld_via_acomp(struct hda_codec *codec,
mutex_lock(&per_pin->lock); eld->monitor_present = false;
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
- size = snd_hdac_acomp_get_eld(&codec->core, per_pin-
pin_nid,
+-1, &eld->monitor_present, eld->eld_buffer, ELD_MAX_SIZE); if (size > 0) { @@ -1739,7 +1739,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ if (codec_has_acomp(codec))
snd_hdac_sync_audio_rate(&codec->core, pin_nid, runtime-rate);
snd_hdac_sync_audio_rate(&codec->core, pin_nid, -1,runtime->rate);non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);
@@ -2285,7 +2286,7 @@ static void haswell_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state); }
-static void intel_pin_eld_notify(void *audio_ptr, int port) +static void intel_pin_eld_notify(void *audio_ptr, int port, int +dev_id) { struct hda_codec *codec = audio_ptr; int pin_nid; -- 2.5.0
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On Wed, 03 Aug 2016 04:14:29 +0200, Dhinakaran Pandiyan wrote:
An additional parameter has been added to the API's between i915 and audio drivers to identify display devices that can be connected to the same port. Currently only the port identity is being shared, but this is not sufficient as multiple displays can be driven from the same port (E.g. DP MST). This patch makes the API changes with dummy changes in the audio driver (Thanks Libin). Implementation to fully enable DP MST audio will follow later.
You should put this rather in the patch description, as it's a single patch.
thanks,
Takashi
Dhinakaran Pandiyan(1): drm/i915/dp: DP audio API changes for MST
participants (5)
-
Dhinakaran Pandiyan -
Pandiyan, Dhinakaran
-
Takashi Iwai -
Ville Syrjälä -
Yang, Libin