[PATCH 0/7] ASoC: Intel: Update Bxt machine and pm support

[PATCH 0/7] ASoC: Intel: Update Bxt machine and pm support

[Vinod Koul]

This series first adds constraints and other updates on Bxt-rt298
machine for various scenarios.

Then it updates platform driver for PM support to enable firmware reload
on suspend and fixes dma id for purge request, updates stall bits on
stall/unstall commands and finally adds PM support in machine.

Jayachandran B (2):
  ASoC: Intel: Skylake: Enable firmware reload in suspend
  ASoC: Intel: Skylake: Update DSP stall bits

Jeeja KP (1):
  ASoC: Intel: Add support for PM ops in bxt-rt298

Senthilnathan Veppur (4):
  ASoC: Intel: Add DMIC 4 channel support for bxt machine
  ASoC: Intel: Add FE rate & channel constraints for bxt-rt298
  ASoC: Intel: Update ignore suspend for bxt-rt298
  ASoC: Intel: Skylake: Update FW purge for Broxton

 sound/soc/intel/boards/bxt_rt298.c    | 140 ++++++++++++++++++++++++++++++++++
 sound/soc/intel/skylake/bxt-sst.c     |  25 +++++-
 sound/soc/intel/skylake/skl-sst-dsp.c |  15 ++--
 sound/soc/intel/skylake/skl-sst-dsp.h |   2 +
 sound/soc/intel/skylake/skl-sst-ipc.h |   3 +
 sound/soc/intel/skylake/skl-sst.c     |   1 +
 sound/soc/intel/skylake/skl.c         |   1 +
 7 files changed, 176 insertions(+), 11 deletions(-)

-- 
1.9.1

[PATCH 1/7] ASoC: Intel: Add DMIC 4 channel support for bxt machine

[Vinod Koul]

From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>

Like Skylake, we can support  4 channel for DMIC, so add
hw_params and constraints in the bxt-rt298 machine

While at it, also add codec1 pipe for speaker playback.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/boards/bxt_rt298.c | 66 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index f4787515c0ed..9b649b6cc757 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -33,6 +33,7 @@ enum {
 	BXT_DPCM_AUDIO_PB = 0,
 	BXT_DPCM_AUDIO_CP,
 	BXT_DPCM_AUDIO_REF_CP,
+	BXT_DPCM_AUDIO_DMIC_CP,
 	BXT_DPCM_AUDIO_HDMI1_PB,
 	BXT_DPCM_AUDIO_HDMI2_PB,
 	BXT_DPCM_AUDIO_HDMI3_PB,
@@ -88,6 +89,7 @@ static const struct snd_soc_dapm_route broxton_rt298_map[] = {
 	/* CODEC BE connections */
 	{ "AIF1 Playback", NULL, "ssp5 Tx"},
 	{ "ssp5 Tx", NULL, "codec0_out"},
+	{ "ssp5 Tx", NULL, "codec1_out"},
 
 	{ "codec0_in", NULL, "ssp5 Rx" },
 	{ "ssp5 Rx", NULL, "AIF1 Capture" },
@@ -169,6 +171,55 @@ static struct snd_soc_ops broxton_rt298_ops = {
 	.hw_params = broxton_rt298_hw_params,
 };
 
+static unsigned int rates[] = {
+	48000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_rates = {
+	.count = ARRAY_SIZE(rates),
+	.list  = rates,
+	.mask = 0,
+};
+
+static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
+				struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *channels = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_CHANNELS);
+	if (params_channels(params) == 2)
+		channels->min = channels->max = 2;
+	else
+		channels->min = channels->max = 4;
+
+	return 0;
+}
+
+static unsigned int channels_dmic[] = {
+	2, 4,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
+	.count = ARRAY_SIZE(channels_dmic),
+	.list = channels_dmic,
+	.mask = 0,
+};
+
+static int broxton_dmic_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	runtime->hw.channels_max = 4;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+					&constraints_dmic_channels);
+
+	return snd_pcm_hw_constraint_list(substream->runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+}
+
+static struct snd_soc_ops broxton_dmic_ops = {
+	.startup = broxton_dmic_startup,
+};
+
 /* broxton digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link broxton_rt298_dais[] = {
 	/* Front End DAI links */
@@ -211,6 +262,20 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.nonatomic = 1,
 		.dynamic = 1,
 	},
+	[BXT_DPCM_AUDIO_DMIC_CP]
+	{
+		.name = "Bxt Audio DMIC cap",
+		.stream_name = "dmiccap",
+		.cpu_dai_name = "DMIC Pin",
+		.codec_name = "snd-soc-dummy",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.platform_name = "0000:00:0e.0",
+		.init = NULL,
+		.dpcm_capture = 1,
+		.nonatomic = 1,
+		.dynamic = 1,
+		.ops = &broxton_dmic_ops,
+	},
 	[BXT_DPCM_AUDIO_HDMI1_PB]
 	{
 		.name = "Bxt HDMI Port1",
@@ -276,6 +341,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_name = "dmic-codec",
 		.codec_dai_name = "dmic-hifi",
 		.platform_name = "0000:00:0e.0",
+		.be_hw_params_fixup = broxton_dmic_fixup,
 		.ignore_suspend = 1,
 		.dpcm_capture = 1,
 		.no_pcm = 1,
-- 
1.9.1

[PATCH 2/7] ASoC: Intel: Add FE rate & channel constraints for bxt-rt298

[Vinod Koul]

From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>

We support stereo 48Khz audio, so add these as constraints
for this card

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/boards/bxt_rt298.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 9b649b6cc757..10eb5cbf57e4 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -220,6 +220,40 @@ static struct snd_soc_ops broxton_dmic_ops = {
 	.startup = broxton_dmic_startup,
 };
 
+static unsigned int channels[] = {
+	2,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_channels = {
+	.count = ARRAY_SIZE(channels),
+	.list = channels,
+	.mask = 0,
+};
+
+static int bxt_fe_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	/*
+	 * on this platform for PCM device we support:
+	 *      48Khz
+	 *      stereo
+	 */
+
+	runtime->hw.channels_max = 2;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+				&constraints_channels);
+
+	snd_pcm_hw_constraint_list(runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+
+	return 0;
+}
+
+static const struct snd_soc_ops broxton_rt286_fe_ops = {
+	.startup = bxt_fe_startup,
+};
+
 /* broxton digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link broxton_rt298_dais[] = {
 	/* Front End DAI links */
@@ -235,6 +269,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_playback = 1,
+		.ops = &broxton_rt286_fe_ops,
 	},
 	[BXT_DPCM_AUDIO_CP]
 	{
@@ -248,6 +283,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_capture = 1,
+		.ops = &broxton_rt286_fe_ops,
 	},
 	[BXT_DPCM_AUDIO_REF_CP]
 	{
-- 
1.9.1

[PATCH 3/7] ASoC: Intel: Update ignore suspend for bxt-rt298

[Vinod Koul]

From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>

Capture from DMIC requires that we ignore the suspend, so mark
these as ignore_suspend in bxt-rt298 machine.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/boards/bxt_rt298.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 10eb5cbf57e4..8b956500414b 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -106,6 +106,17 @@ static const struct snd_soc_dapm_route broxton_rt298_map[] = {
 
 };
 
+static int broxton_rt298_fe_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dapm_context *dapm;
+	struct snd_soc_component *component = rtd->cpu_dai->component;
+
+	dapm = snd_soc_component_get_dapm(component);
+	snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
+
+	return 0;
+}
+
 static int broxton_rt298_codec_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
@@ -120,6 +131,9 @@ static int broxton_rt298_codec_init(struct snd_soc_pcm_runtime *rtd)
 		return ret;
 
 	rt298_mic_detect(codec, &broxton_headset);
+
+	snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
+
 	return 0;
 }
 
@@ -267,6 +281,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.dynamic = 1,
 		.codec_name = "snd-soc-dummy",
 		.codec_dai_name = "snd-soc-dummy-dai",
+		.init = broxton_rt298_fe_init,
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_playback = 1,
 		.ops = &broxton_rt286_fe_ops,
-- 
1.9.1

[PATCH 4/7] ASoC: Intel: Skylake: Enable firmware reload in suspend

[Vinod Koul]

From: Jayachandran B <jayachandran.b@intel.com>

Broxton DSP needs retains code loaded during runtime_pm cycles.
But it looses that on suspend cycle, so on resume we need to
download the firmware again.

This is done by adding a new flag and based on flag status, we
download the firmware.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/skylake/bxt-sst.c     | 9 +++++++++
 sound/soc/intel/skylake/skl-sst-ipc.h | 3 +++
 sound/soc/intel/skylake/skl-sst.c     | 1 +
 sound/soc/intel/skylake/skl.c         | 1 +
 4 files changed, 14 insertions(+)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index 46235b93e4f8..e50bac74f4a8 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -185,6 +185,7 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx)
 		} else {
 			skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
 			ret = 0;
+			skl->fw_loaded = true;
 		}
 	}
 
@@ -200,6 +201,14 @@ static int bxt_set_dsp_D0(struct sst_dsp *ctx)
 
 	skl->boot_complete = false;
 
+	if (skl->fw_loaded == false) {
+		dev_dbg(ctx->dev, "Re-loading fw\n");
+		ret = bxt_load_base_firmware(ctx);
+		if (ret < 0)
+			dev_err(ctx->dev, "reload fw failed: %d\n", ret);
+		return ret;
+	}
+
 	ret = skl_dsp_enable_core(ctx);
 	if (ret < 0) {
 		dev_err(ctx->dev, "enable dsp core failed ret: %d\n", ret);
diff --git a/sound/soc/intel/skylake/skl-sst-ipc.h b/sound/soc/intel/skylake/skl-sst-ipc.h
index 9f24261abf3e..5102c7b415fe 100644
--- a/sound/soc/intel/skylake/skl-sst-ipc.h
+++ b/sound/soc/intel/skylake/skl-sst-ipc.h
@@ -63,6 +63,9 @@ struct skl_sst {
 
 	/* Populate module information */
 	struct list_head uuid_list;
+
+	/* Is firmware loaded */
+	bool fw_loaded;
 };
 
 struct skl_ipc_init_instance_msg {
diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c
index 4cabae54a71e..dff1076a5f9e 100644
--- a/sound/soc/intel/skylake/skl-sst.c
+++ b/sound/soc/intel/skylake/skl-sst.c
@@ -153,6 +153,7 @@ static int skl_load_base_firmware(struct sst_dsp *ctx)
 
 		dev_dbg(ctx->dev, "Download firmware successful%d\n", ret);
 		skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
+		skl->fw_loaded = true;
 	}
 	return 0;
 transfer_firmware_failed:
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index c0f5d5565dea..734072c79205 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -248,6 +248,7 @@ static int skl_suspend(struct device *dev)
 		ret = _skl_suspend(ebus);
 		if (ret < 0)
 			return ret;
+		skl->skl_sst->fw_loaded = false;
 	}
 
 	if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
-- 
1.9.1

[PATCH 5/7] ASoC: Intel: Skylake: Update FW purge for Broxton

[Vinod Koul]

From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>

Broxton needs to send Purge firmware IPC to DSP before downloading the
firmware. The DMA id needs to be updated for that.

While at it also update Broxton boot sequence to send purge request after
power up and before yanking off reset.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/skylake/bxt-sst.c     | 16 +++++++++++++---
 sound/soc/intel/skylake/skl-sst-dsp.c |  4 ++--
 sound/soc/intel/skylake/skl-sst-dsp.h |  2 ++
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index e50bac74f4a8..622da5d3e3b3 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -58,13 +58,19 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx,
 	ctx->dsp_ops.stream_tag = stream_tag;
 	memcpy(ctx->dmab.area, fwdata, fwsize);
 
+	ret = skl_dsp_core_power_up(ctx);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
+		goto base_fw_load_failed;
+	}
+
 	/* Purge FW request */
 	sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY |
-					 BXT_IPC_PURGE_FW | (stream_tag - 1));
+				(BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));
 
-	ret = skl_dsp_enable_core(ctx);
+	ret = skl_dsp_start_core(ctx);
 	if (ret < 0) {
-		dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
+		dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret);
 		ret = -EIO;
 		goto base_fw_load_failed;
 	}
@@ -161,6 +167,10 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx)
 	if (ret < 0) {
 		ret = sst_bxt_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
 		if (ret < 0) {
+			dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
+			sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
+			sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
+
 			dev_err(ctx->dev, "Core En/ROM load fail:%d\n", ret);
 			goto sst_load_base_firmware_failed;
 		}
diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c
index 13c19855ee1a..37b1d24a9a9d 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.c
+++ b/sound/soc/intel/skylake/skl-sst-dsp.c
@@ -114,7 +114,7 @@ static int skl_dsp_reset_core(struct sst_dsp *ctx)
 	return skl_dsp_core_set_reset_state(ctx);
 }
 
-static int skl_dsp_start_core(struct sst_dsp *ctx)
+int skl_dsp_start_core(struct sst_dsp *ctx)
 {
 	int ret;
 
@@ -140,7 +140,7 @@ static int skl_dsp_start_core(struct sst_dsp *ctx)
 	return ret;
 }
 
-static int skl_dsp_core_power_up(struct sst_dsp *ctx)
+int skl_dsp_core_power_up(struct sst_dsp *ctx)
 {
 	int ret;
 
diff --git a/sound/soc/intel/skylake/skl-sst-dsp.h b/sound/soc/intel/skylake/skl-sst-dsp.h
index 7efaf642c10a..22fbe1075cb5 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.h
+++ b/sound/soc/intel/skylake/skl-sst-dsp.h
@@ -182,5 +182,7 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, unsigned int offset);
 void skl_freeup_uuid_list(struct skl_sst *ctx);
 
 int skl_dsp_strip_extended_manifest(struct firmware *fw);
+int skl_dsp_start_core(struct sst_dsp *ctx);
+int skl_dsp_core_power_up(struct sst_dsp *ctx);
 
 #endif /*__SKL_SST_DSP_H__*/
-- 
1.9.1

[PATCH 6/7] ASoC: Intel: Skylake: Update DSP stall bits

[Vinod Koul]

From: Jayachandran B <jayachandran.b@intel.com>

The stall bits needs to comprehend the number of DSP cores
running, so update the stall and unstall register writes to
comprehend SKL_DSP_CORES_MASK values as well.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Ramesh Babu <ramesh.babu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/skylake/skl-sst-dsp.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c
index 37b1d24a9a9d..33c45aa53532 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.c
+++ b/sound/soc/intel/skylake/skl-sst-dsp.c
@@ -106,9 +106,9 @@ static bool is_skl_dsp_core_enable(struct sst_dsp *ctx)
 static int skl_dsp_reset_core(struct sst_dsp *ctx)
 {
 	/* stall core */
-	sst_dsp_shim_write_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
-			 sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) &
-				SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
+	sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
+			SKL_ADSPCS_CSTALL_MASK,
+			SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
 
 	/* set reset state */
 	return skl_dsp_core_set_reset_state(ctx);
@@ -127,9 +127,8 @@ int skl_dsp_start_core(struct sst_dsp *ctx)
 
 	/* run core */
 	dev_dbg(ctx->dev, "run core...\n");
-	sst_dsp_shim_write_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
-			 sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) &
-				~SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
+	sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
+			SKL_ADSPCS_CSTALL_MASK, 0);
 
 	if (!is_skl_dsp_core_enable(ctx)) {
 		skl_dsp_reset_core(ctx);
-- 
1.9.1

[PATCH 7/7] ASoC: Intel: Add support for PM ops in bxt-rt298

[Vinod Koul]

From: Jeeja KP <jeeja.kp@intel.com>

We need card to be early suspended and late resumed, so use prepare and
complete for card suspend and resume.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/soc/intel/boards/bxt_rt298.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 8b956500414b..2ef33b113bb5 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -454,10 +454,33 @@ static int broxton_audio_probe(struct platform_device *pdev)
 	return devm_snd_soc_register_card(&pdev->dev, &broxton_rt298);
 }
 
+/*
+ * we want the card to be suspend first and then platform driver. This
+ * allows the DAPM to tear down pipelines on suspend and then platform shuts
+ * down the DSP. For this use .prepare for suspending card
+ *
+ * Similarly, use complete to let DSP download firmware first and then sync
+ * DAPM and restore pipelines to DSP
+ */
+static void broxton_rt298_complete(struct device *dev)
+{
+	snd_soc_resume(dev);
+}
+
+static const struct dev_pm_ops broxton_pm_ops = {
+	.prepare = snd_soc_suspend,
+	.complete = broxton_rt298_complete,
+	.freeze = snd_soc_suspend,
+	.thaw = snd_soc_resume,
+	.poweroff = snd_soc_poweroff,
+	.restore = snd_soc_resume,
+};
+
 static struct platform_driver broxton_audio = {
 	.probe = broxton_audio_probe,
 	.driver = {
 		.name = "bxt_alc298s_i2s",
+		.pm = &broxton_pm_ops,
 	},
 };
 module_platform_driver(broxton_audio)
-- 
1.9.1

Applied "ASoC: Intel: Add support for PM ops in bxt-rt298" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Add support for PM ops in bxt-rt298

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 3513798ca4bceae7cb66a7f430160f60f788cede Mon Sep 17 00:00:00 2001
From: Jeeja KP <jeeja.kp@intel.com>
Date: Mon, 13 Jun 2016 17:59:04 +0530
Subject: [PATCH] ASoC: Intel: Add support for PM ops in bxt-rt298

We need card to be early suspended and late resumed, so use prepare and
complete for card suspend and resume.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/boards/bxt_rt298.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 8b956500414b..2ef33b113bb5 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -454,10 +454,33 @@ static int broxton_audio_probe(struct platform_device *pdev)
 	return devm_snd_soc_register_card(&pdev->dev, &broxton_rt298);
 }
 
+/*
+ * we want the card to be suspend first and then platform driver. This
+ * allows the DAPM to tear down pipelines on suspend and then platform shuts
+ * down the DSP. For this use .prepare for suspending card
+ *
+ * Similarly, use complete to let DSP download firmware first and then sync
+ * DAPM and restore pipelines to DSP
+ */
+static void broxton_rt298_complete(struct device *dev)
+{
+	snd_soc_resume(dev);
+}
+
+static const struct dev_pm_ops broxton_pm_ops = {
+	.prepare = snd_soc_suspend,
+	.complete = broxton_rt298_complete,
+	.freeze = snd_soc_suspend,
+	.thaw = snd_soc_resume,
+	.poweroff = snd_soc_poweroff,
+	.restore = snd_soc_resume,
+};
+
 static struct platform_driver broxton_audio = {
 	.probe = broxton_audio_probe,
 	.driver = {
 		.name = "bxt_alc298s_i2s",
+		.pm = &broxton_pm_ops,
 	},
 };
 module_platform_driver(broxton_audio)
-- 
2.8.1

Applied "ASoC: Intel: Skylake: Update DSP stall bits" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Skylake: Update DSP stall bits

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 2f74053bead3f47ddee219f521562db941ce0ae1 Mon Sep 17 00:00:00 2001
From: Jayachandran B <jayachandran.b@intel.com>
Date: Mon, 13 Jun 2016 17:59:03 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Update DSP stall bits

The stall bits needs to comprehend the number of DSP cores
running, so update the stall and unstall register writes to
comprehend SKL_DSP_CORES_MASK values as well.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Ramesh Babu <ramesh.babu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/skylake/skl-sst-dsp.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c
index 37b1d24a9a9d..33c45aa53532 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.c
+++ b/sound/soc/intel/skylake/skl-sst-dsp.c
@@ -106,9 +106,9 @@ static bool is_skl_dsp_core_enable(struct sst_dsp *ctx)
 static int skl_dsp_reset_core(struct sst_dsp *ctx)
 {
 	/* stall core */
-	sst_dsp_shim_write_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
-			 sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) &
-				SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
+	sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
+			SKL_ADSPCS_CSTALL_MASK,
+			SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
 
 	/* set reset state */
 	return skl_dsp_core_set_reset_state(ctx);
@@ -127,9 +127,8 @@ int skl_dsp_start_core(struct sst_dsp *ctx)
 
 	/* run core */
 	dev_dbg(ctx->dev, "run core...\n");
-	sst_dsp_shim_write_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
-			 sst_dsp_shim_read_unlocked(ctx, SKL_ADSP_REG_ADSPCS) &
-				~SKL_ADSPCS_CSTALL(SKL_DSP_CORES_MASK));
+	sst_dsp_shim_update_bits_unlocked(ctx, SKL_ADSP_REG_ADSPCS,
+			SKL_ADSPCS_CSTALL_MASK, 0);
 
 	if (!is_skl_dsp_core_enable(ctx)) {
 		skl_dsp_reset_core(ctx);
-- 
2.8.1

Applied "ASoC: Intel: Skylake: Update FW purge for Broxton" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Skylake: Update FW purge for Broxton

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 2023576dd74c9afdb25692f7e9ac9a837e8cf3bd Mon Sep 17 00:00:00 2001
From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Date: Mon, 13 Jun 2016 17:59:02 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Update FW purge for Broxton

Broxton needs to send Purge firmware IPC to DSP before downloading the
firmware. The DMA id needs to be updated for that.

While at it also update Broxton boot sequence to send purge request after
power up and before yanking off reset.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/skylake/bxt-sst.c     | 16 +++++++++++++---
 sound/soc/intel/skylake/skl-sst-dsp.c |  4 ++--
 sound/soc/intel/skylake/skl-sst-dsp.h |  2 ++
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index e50bac74f4a8..622da5d3e3b3 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -58,13 +58,19 @@ static int sst_bxt_prepare_fw(struct sst_dsp *ctx,
 	ctx->dsp_ops.stream_tag = stream_tag;
 	memcpy(ctx->dmab.area, fwdata, fwsize);
 
+	ret = skl_dsp_core_power_up(ctx);
+	if (ret < 0) {
+		dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
+		goto base_fw_load_failed;
+	}
+
 	/* Purge FW request */
 	sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY |
-					 BXT_IPC_PURGE_FW | (stream_tag - 1));
+				(BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));
 
-	ret = skl_dsp_enable_core(ctx);
+	ret = skl_dsp_start_core(ctx);
 	if (ret < 0) {
-		dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
+		dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret);
 		ret = -EIO;
 		goto base_fw_load_failed;
 	}
@@ -161,6 +167,10 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx)
 	if (ret < 0) {
 		ret = sst_bxt_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
 		if (ret < 0) {
+			dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
+			sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
+			sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
+
 			dev_err(ctx->dev, "Core En/ROM load fail:%d\n", ret);
 			goto sst_load_base_firmware_failed;
 		}
diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c
index 13c19855ee1a..37b1d24a9a9d 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.c
+++ b/sound/soc/intel/skylake/skl-sst-dsp.c
@@ -114,7 +114,7 @@ static int skl_dsp_reset_core(struct sst_dsp *ctx)
 	return skl_dsp_core_set_reset_state(ctx);
 }
 
-static int skl_dsp_start_core(struct sst_dsp *ctx)
+int skl_dsp_start_core(struct sst_dsp *ctx)
 {
 	int ret;
 
@@ -140,7 +140,7 @@ static int skl_dsp_start_core(struct sst_dsp *ctx)
 	return ret;
 }
 
-static int skl_dsp_core_power_up(struct sst_dsp *ctx)
+int skl_dsp_core_power_up(struct sst_dsp *ctx)
 {
 	int ret;
 
diff --git a/sound/soc/intel/skylake/skl-sst-dsp.h b/sound/soc/intel/skylake/skl-sst-dsp.h
index 7efaf642c10a..22fbe1075cb5 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.h
+++ b/sound/soc/intel/skylake/skl-sst-dsp.h
@@ -182,5 +182,7 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, unsigned int offset);
 void skl_freeup_uuid_list(struct skl_sst *ctx);
 
 int skl_dsp_strip_extended_manifest(struct firmware *fw);
+int skl_dsp_start_core(struct sst_dsp *ctx);
+int skl_dsp_core_power_up(struct sst_dsp *ctx);
 
 #endif /*__SKL_SST_DSP_H__*/
-- 
2.8.1

Applied "ASoC: Intel: Skylake: Enable firmware reload in suspend" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Skylake: Enable firmware reload in suspend

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 1665c177abf40338e7b5f1ae465d3aaabe5af9d0 Mon Sep 17 00:00:00 2001
From: Jayachandran B <jayachandran.b@intel.com>
Date: Mon, 13 Jun 2016 17:59:01 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Enable firmware reload in suspend

Broxton DSP needs retains code loaded during runtime_pm cycles.
But it looses that on suspend cycle, so on resume we need to
download the firmware again.

This is done by adding a new flag and based on flag status, we
download the firmware.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/skylake/bxt-sst.c     | 9 +++++++++
 sound/soc/intel/skylake/skl-sst-ipc.h | 3 +++
 sound/soc/intel/skylake/skl-sst.c     | 1 +
 sound/soc/intel/skylake/skl.c         | 1 +
 4 files changed, 14 insertions(+)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index 46235b93e4f8..e50bac74f4a8 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -185,6 +185,7 @@ static int bxt_load_base_firmware(struct sst_dsp *ctx)
 		} else {
 			skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
 			ret = 0;
+			skl->fw_loaded = true;
 		}
 	}
 
@@ -200,6 +201,14 @@ static int bxt_set_dsp_D0(struct sst_dsp *ctx)
 
 	skl->boot_complete = false;
 
+	if (skl->fw_loaded == false) {
+		dev_dbg(ctx->dev, "Re-loading fw\n");
+		ret = bxt_load_base_firmware(ctx);
+		if (ret < 0)
+			dev_err(ctx->dev, "reload fw failed: %d\n", ret);
+		return ret;
+	}
+
 	ret = skl_dsp_enable_core(ctx);
 	if (ret < 0) {
 		dev_err(ctx->dev, "enable dsp core failed ret: %d\n", ret);
diff --git a/sound/soc/intel/skylake/skl-sst-ipc.h b/sound/soc/intel/skylake/skl-sst-ipc.h
index 9f24261abf3e..5102c7b415fe 100644
--- a/sound/soc/intel/skylake/skl-sst-ipc.h
+++ b/sound/soc/intel/skylake/skl-sst-ipc.h
@@ -63,6 +63,9 @@ struct skl_sst {
 
 	/* Populate module information */
 	struct list_head uuid_list;
+
+	/* Is firmware loaded */
+	bool fw_loaded;
 };
 
 struct skl_ipc_init_instance_msg {
diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c
index 4cabae54a71e..dff1076a5f9e 100644
--- a/sound/soc/intel/skylake/skl-sst.c
+++ b/sound/soc/intel/skylake/skl-sst.c
@@ -153,6 +153,7 @@ static int skl_load_base_firmware(struct sst_dsp *ctx)
 
 		dev_dbg(ctx->dev, "Download firmware successful%d\n", ret);
 		skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
+		skl->fw_loaded = true;
 	}
 	return 0;
 transfer_firmware_failed:
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index c0f5d5565dea..734072c79205 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -248,6 +248,7 @@ static int skl_suspend(struct device *dev)
 		ret = _skl_suspend(ebus);
 		if (ret < 0)
 			return ret;
+		skl->skl_sst->fw_loaded = false;
 	}
 
 	if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
-- 
2.8.1

Applied "ASoC: Intel: Update ignore suspend for bxt-rt298" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Update ignore suspend for bxt-rt298

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 316f135a4ec6fba2a53930f843a0c1c5d4ae1ea2 Mon Sep 17 00:00:00 2001
From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Date: Mon, 13 Jun 2016 17:59:00 +0530
Subject: [PATCH] ASoC: Intel: Update ignore suspend for bxt-rt298

Capture from DMIC requires that we ignore the suspend, so mark
these as ignore_suspend in bxt-rt298 machine.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/boards/bxt_rt298.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 10eb5cbf57e4..8b956500414b 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -106,6 +106,17 @@ static const struct snd_soc_dapm_route broxton_rt298_map[] = {
 
 };
 
+static int broxton_rt298_fe_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dapm_context *dapm;
+	struct snd_soc_component *component = rtd->cpu_dai->component;
+
+	dapm = snd_soc_component_get_dapm(component);
+	snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
+
+	return 0;
+}
+
 static int broxton_rt298_codec_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
@@ -120,6 +131,9 @@ static int broxton_rt298_codec_init(struct snd_soc_pcm_runtime *rtd)
 		return ret;
 
 	rt298_mic_detect(codec, &broxton_headset);
+
+	snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
+
 	return 0;
 }
 
@@ -267,6 +281,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.dynamic = 1,
 		.codec_name = "snd-soc-dummy",
 		.codec_dai_name = "snd-soc-dummy-dai",
+		.init = broxton_rt298_fe_init,
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_playback = 1,
 		.ops = &broxton_rt286_fe_ops,
-- 
2.8.1

Applied "ASoC: Intel: Add FE rate & channel constraints for bxt-rt298" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Add FE rate & channel constraints for bxt-rt298

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 4cdf33feb2c67ef1ff45bc5160b261b8c1fd2428 Mon Sep 17 00:00:00 2001
From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Date: Mon, 13 Jun 2016 17:58:59 +0530
Subject: [PATCH] ASoC: Intel: Add FE rate & channel constraints for bxt-rt298

We support stereo 48Khz audio, so add these as constraints
for this card

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/boards/bxt_rt298.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index 9b649b6cc757..10eb5cbf57e4 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -220,6 +220,40 @@ static struct snd_soc_ops broxton_dmic_ops = {
 	.startup = broxton_dmic_startup,
 };
 
+static unsigned int channels[] = {
+	2,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_channels = {
+	.count = ARRAY_SIZE(channels),
+	.list = channels,
+	.mask = 0,
+};
+
+static int bxt_fe_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	/*
+	 * on this platform for PCM device we support:
+	 *      48Khz
+	 *      stereo
+	 */
+
+	runtime->hw.channels_max = 2;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+				&constraints_channels);
+
+	snd_pcm_hw_constraint_list(runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+
+	return 0;
+}
+
+static const struct snd_soc_ops broxton_rt286_fe_ops = {
+	.startup = bxt_fe_startup,
+};
+
 /* broxton digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link broxton_rt298_dais[] = {
 	/* Front End DAI links */
@@ -235,6 +269,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_playback = 1,
+		.ops = &broxton_rt286_fe_ops,
 	},
 	[BXT_DPCM_AUDIO_CP]
 	{
@@ -248,6 +283,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_dai_name = "snd-soc-dummy-dai",
 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 		.dpcm_capture = 1,
+		.ops = &broxton_rt286_fe_ops,
 	},
 	[BXT_DPCM_AUDIO_REF_CP]
 	{
-- 
2.8.1

Applied "ASoC: Intel: Add DMIC 4 channel support for bxt machine" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: Add DMIC 4 channel support for bxt machine

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From bfcdc6d19008c0f11cba30c2cff1b63ec4e7a744 Mon Sep 17 00:00:00 2001
From: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Date: Mon, 13 Jun 2016 17:58:58 +0530
Subject: [PATCH] ASoC: Intel: Add DMIC 4 channel support for bxt machine

Like Skylake, we can support  4 channel for DMIC, so add
hw_params and constraints in the bxt-rt298 machine

While at it, also add codec1 pipe for speaker playback.

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/boards/bxt_rt298.c | 66 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c
index f4787515c0ed..9b649b6cc757 100644
--- a/sound/soc/intel/boards/bxt_rt298.c
+++ b/sound/soc/intel/boards/bxt_rt298.c
@@ -33,6 +33,7 @@ enum {
 	BXT_DPCM_AUDIO_PB = 0,
 	BXT_DPCM_AUDIO_CP,
 	BXT_DPCM_AUDIO_REF_CP,
+	BXT_DPCM_AUDIO_DMIC_CP,
 	BXT_DPCM_AUDIO_HDMI1_PB,
 	BXT_DPCM_AUDIO_HDMI2_PB,
 	BXT_DPCM_AUDIO_HDMI3_PB,
@@ -88,6 +89,7 @@ static const struct snd_soc_dapm_route broxton_rt298_map[] = {
 	/* CODEC BE connections */
 	{ "AIF1 Playback", NULL, "ssp5 Tx"},
 	{ "ssp5 Tx", NULL, "codec0_out"},
+	{ "ssp5 Tx", NULL, "codec1_out"},
 
 	{ "codec0_in", NULL, "ssp5 Rx" },
 	{ "ssp5 Rx", NULL, "AIF1 Capture" },
@@ -169,6 +171,55 @@ static struct snd_soc_ops broxton_rt298_ops = {
 	.hw_params = broxton_rt298_hw_params,
 };
 
+static unsigned int rates[] = {
+	48000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_rates = {
+	.count = ARRAY_SIZE(rates),
+	.list  = rates,
+	.mask = 0,
+};
+
+static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
+				struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *channels = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_CHANNELS);
+	if (params_channels(params) == 2)
+		channels->min = channels->max = 2;
+	else
+		channels->min = channels->max = 4;
+
+	return 0;
+}
+
+static unsigned int channels_dmic[] = {
+	2, 4,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
+	.count = ARRAY_SIZE(channels_dmic),
+	.list = channels_dmic,
+	.mask = 0,
+};
+
+static int broxton_dmic_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	runtime->hw.channels_max = 4;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+					&constraints_dmic_channels);
+
+	return snd_pcm_hw_constraint_list(substream->runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
+}
+
+static struct snd_soc_ops broxton_dmic_ops = {
+	.startup = broxton_dmic_startup,
+};
+
 /* broxton digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link broxton_rt298_dais[] = {
 	/* Front End DAI links */
@@ -211,6 +262,20 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.nonatomic = 1,
 		.dynamic = 1,
 	},
+	[BXT_DPCM_AUDIO_DMIC_CP]
+	{
+		.name = "Bxt Audio DMIC cap",
+		.stream_name = "dmiccap",
+		.cpu_dai_name = "DMIC Pin",
+		.codec_name = "snd-soc-dummy",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.platform_name = "0000:00:0e.0",
+		.init = NULL,
+		.dpcm_capture = 1,
+		.nonatomic = 1,
+		.dynamic = 1,
+		.ops = &broxton_dmic_ops,
+	},
 	[BXT_DPCM_AUDIO_HDMI1_PB]
 	{
 		.name = "Bxt HDMI Port1",
@@ -276,6 +341,7 @@ static struct snd_soc_dai_link broxton_rt298_dais[] = {
 		.codec_name = "dmic-codec",
 		.codec_dai_name = "dmic-hifi",
 		.platform_name = "0000:00:0e.0",
+		.be_hw_params_fixup = broxton_dmic_fixup,
 		.ignore_suspend = 1,
 		.dpcm_capture = 1,
 		.no_pcm = 1,
-- 
2.8.1