On 5/21/20 8:47 AM, Lukasz Majczak wrote:
Split be_hw_params_fixup function for different codecs as current common
function, leads to crash while trying to get snd_soc_dpcm with
container_of() macro in kabylake_ssp_fixup().
The crash call path looks as below:
soc_pcm_hw_params()
snd_soc_dai_hw_params(codec_dai, substream, &codec_params);
rtd->dai_link->be_hw_params_fixup(rtd, params)
kabylake_ssp_fixup()
In this case, codec_params is just a copy of an internal structure and is
not embedded into struct snd_soc_dpcm thus we cannot use
container_of() on it.

Signed-off-by: Lukasz Majczak <l...@semihalf.com>
---
  .../intel/boards/kbl_rt5663_rt5514_max98927.c | 130 ++++++++++++------
  1 file changed, 85 insertions(+), 45 deletions(-)

diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c 
b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
index 1b1f8d7a4ea3..12a9983979e0 100644
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -171,8 +171,8 @@ static const struct snd_soc_dapm_route kabylake_map[] = {
        { "hs_in", NULL, "ssp1 Rx" },
        { "ssp1 Rx", NULL, "AIF Capture" },
- { "codec1_in", NULL, "ssp0 Rx" },
-       { "ssp0 Rx", NULL, "AIF1 Capture" },
+       { "codec1_in", NULL, "DMIC01 Rx" },
+       { "DMIC01 Rx", NULL, "AIF1 Capture" },

This doesn't seem right. This board uses DMICs attached to the codec so we should not make references to routes that are used for PCH-attached dmics in all other machine drivers:

        { "dmic01_hifi", NULL, "DMIC01 Rx" },
        { "DMIC01 Rx", NULL, "DMIC AIF" },

/* IV feedback path */
        { "codec0_fb_in", NULL, "ssp0 Rx"},
@@ -328,42 +328,52 @@ static const struct snd_soc_ops kabylake_rt5663_fe_ops = {
        .startup = kbl_fe_startup,
  };
-static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
-                                       struct snd_pcm_hw_params *params)
+static void kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd,
+       struct snd_pcm_hw_params *params, snd_pcm_format_t pcm_fmt)
  {
        struct snd_interval *rate = hw_param_interval(params,
                        SNDRV_PCM_HW_PARAM_RATE);
-       struct snd_interval *chan = hw_param_interval(params,
+       struct snd_interval *channels = hw_param_interval(params,
                        SNDRV_PCM_HW_PARAM_CHANNELS);
        struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
-       struct snd_soc_dpcm *dpcm = container_of(
-                       params, struct snd_soc_dpcm, hw_params);
-       struct snd_soc_dai_link *fe_dai_link = dpcm->fe->dai_link;
-       struct snd_soc_dai_link *be_dai_link = dpcm->be->dai_link;
/*
         * The ADSP will convert the FE rate to 48k, stereo, 24 bit
         */
-       if (!strcmp(fe_dai_link->name, "Kbl Audio Port") ||
-           !strcmp(fe_dai_link->name, "Kbl Audio Headset Playback") ||
-           !strcmp(fe_dai_link->name, "Kbl Audio Capture Port")) {
-               rate->min = rate->max = 48000;
-               chan->min = chan->max = 2;
-               snd_mask_none(fmt);
-               snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
-       } else if (!strcmp(fe_dai_link->name, "Kbl Audio DMIC cap")) {
+
+       rate->min = rate->max = 48000;
+       channels->min = channels->max = 2;
+
+       snd_mask_none(fmt);
+       snd_mask_set_format(fmt, pcm_fmt);
+}
+
+static int kabylake_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
+       struct snd_pcm_hw_params *params)
+{
+       kabylake_ssp_fixup(rtd, params, SNDRV_PCM_FORMAT_S16_LE);
+       return 0;
+}
+
+static int kabylake_ssp1_fixup(struct snd_soc_pcm_runtime *rtd,
+       struct snd_pcm_hw_params *params)
+{
+
+       kabylake_ssp_fixup(rtd, params, SNDRV_PCM_FORMAT_S24_LE);
+       return 0;
+}
+
+static int kabylake_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 ||
                                DMIC_CH(dmic_constraints) == 2)
-                       chan->min = chan->max = 2;
+                       channels->min = channels->max = 2;
                else
-                       chan->min = chan->max = 4;
-       }
-       /*
-        * The speaker on the SSP0 supports S16_LE and not S24_LE.
-        * thus changing the mask here
-        */
-       if (!strcmp(be_dai_link->name, "SSP0-Codec"))
-               snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
+                       channels->min = channels->max = 4;
return 0;
  }
@@ -400,20 +410,6 @@ static int kabylake_ssp0_hw_params(struct 
snd_pcm_substream *substream,
        int ret = 0, j;
for_each_rtd_codec_dais(rtd, j, codec_dai) {
-               if (!strcmp(codec_dai->component->name, RT5514_DEV_NAME)) {
-                       ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0, 8, 
16);
-                       if (ret < 0) {
-                               dev_err(rtd->dev, "set TDM slot err:%d\n", ret);
-                               return ret;
-                       }
-
-                       ret = snd_soc_dai_set_sysclk(codec_dai,
-                               RT5514_SCLK_S_MCLK, 24576000, SND_SOC_CLOCK_IN);
-                       if (ret < 0) {
-                               dev_err(rtd->dev, "set sysclk err: %d\n", ret);
-                               return ret;
-                       }
-               }
                if (!strcmp(codec_dai->component->name, MAXIM_DEV0_NAME)) {
                        ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 
16);
                        if (ret < 0) {
@@ -433,10 +429,37 @@ static int kabylake_ssp0_hw_params(struct 
snd_pcm_substream *substream,
        return ret;
  }
+static int kabylake_dmic01_hw_params(struct snd_pcm_substream *substream,
+       struct snd_pcm_hw_params *params)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       int ret = 0;
+
+       ret = snd_soc_dai_set_tdm_slot(rtd->codec_dai, 0xF, 0, 8, 16);
+       if (ret < 0) {
+               dev_err(rtd->dev, "set TDM slot err:%d\n", ret);
+               return ret;
+       }
+
+       ret = snd_soc_dai_set_sysclk(rtd->codec_dai,
+               RT5514_SCLK_S_MCLK, 24576000, SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               dev_err(rtd->dev, "set sysclk err: %d\n", ret);
+               return ret;
+       }
+
+       return ret;
+}
+
  static struct snd_soc_ops kabylake_ssp0_ops = {
        .hw_params = kabylake_ssp0_hw_params,
  };
+static struct snd_soc_ops kabylake_dmic01_ops = {
+       .hw_params = kabylake_dmic01_hw_params,
+};
+
+
  static const unsigned int channels_dmic[] = {
        4,
  };
@@ -507,14 +530,19 @@ SND_SOC_DAILINK_DEF(ssp0_pin,
  SND_SOC_DAILINK_DEF(ssp0_codec,
        DAILINK_COMP_ARRAY(
        /* Left */ COMP_CODEC(MAXIM_DEV0_NAME, KBL_MAXIM_CODEC_DAI),
-       /* Right */COMP_CODEC(MAXIM_DEV1_NAME, KBL_MAXIM_CODEC_DAI),
-       /* dmic */ COMP_CODEC(RT5514_DEV_NAME, KBL_REALTEK_DMIC_CODEC_DAI)));
+       /* Right */COMP_CODEC(MAXIM_DEV1_NAME, KBL_MAXIM_CODEC_DAI)));
SND_SOC_DAILINK_DEF(ssp1_pin,
        DAILINK_COMP_ARRAY(COMP_CPU("SSP1 Pin")));
  SND_SOC_DAILINK_DEF(ssp1_codec,
        DAILINK_COMP_ARRAY(COMP_CODEC(RT5663_DEV_NAME, KBL_REALTEK_CODEC_DAI)));
+SND_SOC_DAILINK_DEF(dmic01_pin,
+       DAILINK_COMP_ARRAY(COMP_CPU("DMIC01 Pin")));
+SND_SOC_DAILINK_DEF(dmic01_codec,
+       DAILINK_COMP_ARRAY(
+               COMP_CODEC(RT5514_DEV_NAME, KBL_REALTEK_DMIC_CODEC_DAI)));
+
  SND_SOC_DAILINK_DEF(idisp1_pin,
        DAILINK_COMP_ARRAY(COMP_CPU("iDisp1 Pin")));
  SND_SOC_DAILINK_DEF(idisp1_codec,
@@ -618,9 +646,8 @@ static struct snd_soc_dai_link kabylake_dais[] = {
                        SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBS_CFS,
                .ignore_pmdown_time = 1,
-               .be_hw_params_fixup = kabylake_ssp_fixup,
+               .be_hw_params_fixup = kabylake_ssp0_fixup,
                .dpcm_playback = 1,
-               .dpcm_capture = 1,
                .ops = &kabylake_ssp0_ops,
                SND_SOC_DAILINK_REG(ssp0_pin, ssp0_codec, platform),
        },
@@ -632,12 +659,25 @@ static struct snd_soc_dai_link kabylake_dais[] = {
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBS_CFS,
                .ignore_pmdown_time = 1,
-               .be_hw_params_fixup = kabylake_ssp_fixup,
+               .be_hw_params_fixup = kabylake_ssp1_fixup,
                .ops = &kabylake_rt5663_ops,
                .dpcm_playback = 1,
                .dpcm_capture = 1,
                SND_SOC_DAILINK_REG(ssp1_pin, ssp1_codec, platform),
        },
+       {
+               .name = "dmic01",
+               .id = 2,
+               .no_pcm = 1,
+               .dai_fmt = SND_SOC_DAIFMT_DSP_B |
+                       SND_SOC_DAIFMT_NB_NF |
+                       SND_SOC_DAIFMT_CBS_CFS,
+               .ignore_pmdown_time = 1,
+               .be_hw_params_fixup = kabylake_dmic_fixup,
+               .dpcm_capture = 1,
+               .ops = &kabylake_dmic01_ops,
+               SND_SOC_DAILINK_REG(dmic01_pin, dmic01_codec, platform),
+       },
        {
                .name = "iDisp1",
                .id = 3,

base-commit: a4f6fc98cd2fa1774bcaeb248c67156ef9402a56

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