Currently we disallow the runtime PM of the HD-audio controller if it's bound with HDMI/DP on Nvidia / AMD unless it's for dGPU. This is for keeping the link up to get the proper notification for ELD hotplug.

As explained in the commit 37a3a98ef601 ("ALSA: hda - Enable runtime PM only for discrete GPU"), this keep-power-up behavior is rather a stop-gap solution until the ELD notification via audio component. And now we finally got the audio component for these graphics drivers via commit ade49db337a9 ("ALSA: hda/hdmi - Allow audio component for AMD/ATI and Nvidia HDMI"), so it's time to change.

This patch makes HD-audio controller again runtime-suspendable when the device gets bound with audio component in HDMI codec driver. For making it easier to access from the codec driver, move the flag into the common hda_bus object instead of hda_intel flag. Also rename it to keep_power, to indicate the actual meaning.

Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/hda_codec.h | 1 + sound/pci/hda/hda_intel.c | 11 +++++------ sound/pci/hda/hda_intel.h | 1 - sound/pci/hda/patch_hdmi.c | 4 +++- 4 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h index 871993696c5f..9a0393cf024c 100644 --- a/include/sound/hda_codec.h +++ b/include/sound/hda_codec.h @@ -59,6 +59,7 @@ struct hda_bus { unsigned int in_reset:1; /* during reset operation */ unsigned int no_response_fallback:1; /* don't fallback at RIRB error */ unsigned int bus_probing :1; /* during probing process */ + unsigned int keep_power:1; /* keep power up for notification */

int primary_dig_out_type; /* primary digital out PCM type */ unsigned int mixer_assigned; /* codec addr for mixer name */ diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 4496fce21300..91e71be42fa4 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -356,7 +356,7 @@ enum { */ #ifdef SUPPORT_VGA_SWITCHEROO #define use_vga_switcheroo(chip) ((chip)->use_vga_switcheroo) -#define needs_eld_notify_link(chip) ((chip)->need_eld_notify_link) +#define needs_eld_notify_link(chip) ((chip)->bus.keep_power) #else #define use_vga_switcheroo(chip) 0 #define needs_eld_notify_link(chip) false @@ -1145,7 +1145,7 @@ static int azx_runtime_idle(struct device *dev) return -EBUSY;

/* ELD notification gets broken when HD-audio bus is off */ - if (needs_eld_notify_link(hda)) + if (needs_eld_notify_link(chip)) return -EBUSY;

return 0; @@ -1256,7 +1256,7 @@ static void setup_vga_switcheroo_runtime_pm(struct azx *chip) struct hda_intel *hda = container_of(chip, struct hda_intel, chip); struct hda_codec *codec;

- if (hda->use_vga_switcheroo && !hda->need_eld_notify_link) { + if (hda->use_vga_switcheroo && !needs_eld_notify_link(chip)) { list_for_each_codec(codec, &chip->bus) codec->auto_runtime_pm = 1; /* reset the power save setup */ @@ -1270,10 +1270,9 @@ static void azx_vs_gpu_bound(struct pci_dev *pci, { struct snd_card *card = pci_get_drvdata(pci); struct azx *chip = card->private_data; - struct hda_intel *hda = container_of(chip, struct hda_intel, chip);

if (client_id == VGA_SWITCHEROO_DIS) - hda->need_eld_notify_link = 0; + chip->bus.keep_power = 0; setup_vga_switcheroo_runtime_pm(chip); }

@@ -1285,7 +1284,7 @@ static void init_vga_switcheroo(struct azx *chip) dev_info(chip->card->dev, "Handle vga_switcheroo audio client\n"); hda->use_vga_switcheroo = 1; - hda->need_eld_notify_link = 1; /* cleared in gpu_bound op */ + chip->bus.keep_power = 1; /* cleared in either gpu_bound op or codec probe */ chip->driver_caps |= AZX_DCAPS_PM_RUNTIME; pci_dev_put(p); } diff --git a/sound/pci/hda/hda_intel.h b/sound/pci/hda/hda_intel.h index 1468865e0342..2acfff3da1a0 100644 --- a/sound/pci/hda/hda_intel.h +++ b/sound/pci/hda/hda_intel.h @@ -25,7 +25,6 @@ struct hda_intel {

/* vga_switcheroo setup */ unsigned int use_vga_switcheroo:1; - unsigned int need_eld_notify_link:1; unsigned int vga_switcheroo_registered:1; unsigned int init_failed:1; /* delayed init failed */

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 933c7bf47ef6..83b8b9d27711 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2542,8 +2542,10 @@ static void generic_acomp_init(struct hda_codec *codec, spec->port2pin = port2pin; setup_drm_audio_ops(codec, ops); if (!snd_hdac_acomp_init(&codec->bus->core, &spec->drm_audio_ops, - match_bound_vga, 0)) + match_bound_vga, 0)) { spec->acomp_registered = true; + codec->bus->keep_power = 0; + } }

/*