From: Rander Wang rander.wang@linux.intel.com

In commit 7d4f606c50ff ("ALSA: hda - WAKEEN feature enabling for runtime pm"), legacy HD-A driver sets hda controller in reset mode after entering runtime-suspend. And when resuming from suspend mode, it checks hda controller & codec status to detect headphone hotplug event. Now this patch does the same job in SOF runtime pm functions.

And we need to check all the non-hdmi codecs for some cases like playback with HDMI or capture with DMIC connected to dsp. In these cases, only controller is active and codecs are suspended, so codecs can't send unsolicited event to controller. The jack polling operation will activate codecs and unsolicited event can work even codecs become suspended later.

Tested on whiskylake with hda codecs.

Signed-off-by: Rander Wang rander.wang@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/intel/hda-codec.c | 45 +++++++++++++++++++++++++++++++-- sound/soc/sof/intel/hda-dsp.c | 29 ++++++++++++++++----- sound/soc/sof/intel/hda.h | 4 +++ 3 files changed, 70 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sof/intel/hda-codec.c b/sound/soc/sof/intel/hda-codec.c index b8b37f082309..c711792534da 100644 --- a/sound/soc/sof/intel/hda-codec.c +++ b/sound/soc/sof/intel/hda-codec.c @@ -10,6 +10,7 @@

#include <linux/module.h> #include <sound/hdaudio_ext.h> +#include <sound/hda_register.h> #include <sound/hda_codec.h> #include <sound/hda_i915.h> #include <sound/sof.h> @@ -37,16 +38,55 @@ static void hda_codec_load_module(struct hda_codec *codec) static void hda_codec_load_module(struct hda_codec *codec) {} #endif

+/* check jack status after resuming from suspend mode */ +void hda_codec_jack_check(struct snd_sof_dev *sdev, int status) +{ + struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; + struct hda_bus *hbus = sof_to_hbus(sdev); + struct hdac_bus *bus = sof_to_bus(sdev); + struct hda_codec *codec; + int mask; + + /* + * there are two reasons for runtime resume + * (1) waken up by interrupt triggered by WAKEEN feature + * (2) waken up by pm get functions for some audio operations + * For case (1), the bits in status mean which codec triggers + * the interrupt and jacks will be checked on these codecs. + * For case (2), we need to check all the non-hdmi codecs for some + * cases like playback with HDMI or capture with DMIC. In these + * cases, only controller is active and codecs are suspended, so + * codecs can't send unsolicited event to controller. The jack polling + * operation will activate codecs and unsolicited event can work + * even codecs become suspended later. + */ + mask = status ? status : hda->hda_codec_mask; + + list_for_each_codec(codec, hbus) + if (mask & BIT(codec->core.addr)) + schedule_delayed_work(&codec->jackpoll_work, + codec->jackpoll_interval); + + /* disable controller Wake Up event*/ + snd_hdac_chip_writew(bus, WAKEEN, + snd_hdac_chip_readw(bus, WAKEEN) & + ~hda->hda_codec_mask); +} +#else +void hda_codec_jack_check(struct snd_sof_dev *sdev, int status) {} #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ +EXPORT_SYMBOL(hda_codec_jack_check);

/* probe individual codec */ static int hda_codec_probe(struct snd_sof_dev *sdev, int address) { - struct hda_bus *hbus = sof_to_hbus(sdev); - struct hdac_device *hdev; #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) + struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct hdac_hda_priv *hda_priv; #endif + struct hda_bus *hbus = sof_to_hbus(sdev); + struct hdac_device *hdev; + u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; u32 resp = -1; @@ -77,6 +117,7 @@ static int hda_codec_probe(struct snd_sof_dev *sdev, int address) /* use legacy bus only for HDA codecs, idisp uses ext bus */ if ((resp & 0xFFFF0000) != IDISP_VID_INTEL) { hdev->type = HDA_DEV_LEGACY; + hda->hda_codec_mask |= BIT(address); hda_codec_load_module(&hda_priv->codec); }

diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c index 481cfa0b225e..f8ed8a4a60b7 100644 --- a/sound/soc/sof/intel/hda-dsp.c +++ b/sound/soc/sof/intel/hda-dsp.c @@ -282,7 +282,8 @@ void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev) HDA_DSP_REG_HIPCCTL_BUSY | HDA_DSP_REG_HIPCCTL_DONE, 0); }

-static int hda_suspend(struct snd_sof_dev *sdev, int state) +static int hda_suspend(struct snd_sof_dev *sdev, int state, + bool runtime_suspend) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; @@ -295,6 +296,12 @@ static int hda_suspend(struct snd_sof_dev *sdev, int state) hda_dsp_ipc_int_disable(sdev);

#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) + if (IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) && runtime_suspend) + /* enable controller wake up event */ + snd_hdac_chip_writew(bus, WAKEEN, + snd_hdac_chip_readw(bus, WAKEEN) | + hda->hda_codec_mask); + /* power down all hda link */ snd_hdac_ext_bus_link_power_down_all(bus); #endif @@ -329,11 +336,12 @@ static int hda_suspend(struct snd_sof_dev *sdev, int state) return 0; }

-static int hda_resume(struct snd_sof_dev *sdev) +static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume) { #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) struct hdac_bus *bus = sof_to_bus(sdev); struct hdac_ext_link *hlink = NULL; + int status; #endif int ret;

@@ -344,6 +352,11 @@ static int hda_resume(struct snd_sof_dev *sdev) snd_sof_pci_update_bits(sdev, PCI_TCSEL, 0x07, 0);

#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) + if (runtime_resume) { + /* read STATESTS before controller reset */ + status = snd_hdac_chip_readw(bus, STATESTS); + } + /* reset and start hda controller */ ret = hda_dsp_ctrl_init_chip(sdev, true); if (ret < 0) { @@ -360,6 +373,10 @@ static int hda_resume(struct snd_sof_dev *sdev)

hda_dsp_ctrl_misc_clock_gating(sdev, true);

+ /* check jack status based on controller status */ + if (runtime_resume) + hda_codec_jack_check(sdev, status); + /* turn off the links that were off before suspend */ list_for_each_entry(hlink, &bus->hlink_list, list) { if (!hlink->ref_count) @@ -407,19 +424,19 @@ static int hda_resume(struct snd_sof_dev *sdev) int hda_dsp_resume(struct snd_sof_dev *sdev) { /* init hda controller. DSP cores will be powered up during fw boot */ - return hda_resume(sdev); + return hda_resume(sdev, false); }

int hda_dsp_runtime_resume(struct snd_sof_dev *sdev) { /* init hda controller. DSP cores will be powered up during fw boot */ - return hda_resume(sdev); + return hda_resume(sdev, true); }

int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev, int state) { /* stop hda controller and power dsp off */ - return hda_suspend(sdev, state); + return hda_suspend(sdev, state, true); }

int hda_dsp_suspend(struct snd_sof_dev *sdev, int state) @@ -428,7 +445,7 @@ int hda_dsp_suspend(struct snd_sof_dev *sdev, int state) int ret;

/* stop hda controller and power dsp off */ - ret = hda_suspend(sdev, state); + ret = hda_suspend(sdev, state, false); if (ret < 0) { dev_err(bus->dev, "error: suspending dsp\n"); return ret; diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 73d7cc08afc2..dd476d3a745d 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -398,6 +398,9 @@ struct sof_intel_hda_dev {

/* DMIC device */ struct platform_device *dmic_dev; + + /* hda codec mask excluding hdmi */ + u32 hda_codec_mask; };

static inline struct hdac_bus *sof_to_bus(struct snd_sof_dev *s) @@ -556,6 +559,7 @@ void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev, * HDA Codec operations. */ int hda_codec_probe_bus(struct snd_sof_dev *sdev); +void hda_codec_jack_check(struct snd_sof_dev *sdev, int status);

#endif /* CONFIG_SND_SOC_SOF_HDA */

From: Pan Xiuli xiuli.pan@linux.intel.com

If last_busy value is not set at runtime PM enable, the device will be suspend immediately after usage counter is 0. Set the last_busy value to make sure delay is working at first boot up.

Signed-off-by: Pan Xiuli xiuli.pan@linux.intel.com Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/sof-pci-dev.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/sound/soc/sof/sof-pci-dev.c b/sound/soc/sof/sof-pci-dev.c index ffe485f4ba71..3e3ee9c9aefd 100644 --- a/sound/soc/sof/sof-pci-dev.c +++ b/sound/soc/sof/sof-pci-dev.c @@ -232,6 +232,9 @@ static void sof_pci_probe_complete(struct device *dev) */ pm_runtime_allow(dev);

+ /* mark last_busy for pm_runtime to make sure not suspend immediately */ + pm_runtime_mark_last_busy(dev); + /* follow recommendation in pci-driver.c to decrement usage counter */ pm_runtime_put_noidle(dev); }