| Message ID | 20210415124347.475432-1-lma@semihalf.com |
|---|---|
| State | Accepted |
| Commit | a523ef731ac6674dc07574f31bf44cc5bfa14e4d |
| Headers | show |
| Series | [v1] ASoC: Intel: kbl_da7219_max98927: Fix kabylake_ssp_fixup function | expand |
On 4/15/21 7:43 AM, Lukasz Majczak wrote: > kabylake_ssp_fixup function uses snd_soc_dpcm to identify the > codecs DAIs. The HW parameters are changed based on the codec DAI of the > stream. The earlier approach to get snd_soc_dpcm was using container_of() > macro on snd_pcm_hw_params. > > The structures have been modified over time and snd_soc_dpcm does not have > snd_pcm_hw_params as a reference but as a copy. This causes the current > driver to crash when used. > > This patch changes the way snd_soc_dpcm is extracted. snd_soc_pcm_runtime > holds 2 dpcm instances (one for playback and one for capture). 2 codecs > on the SSP are dmic (capture) and speakers (playback). Based on the > stream direction, snd_soc_dpcm is extracted from snd_soc_pcm_runtime. > > Tested for all use cases of the driver. > Based on similar fix in kbl_rt5663_rt5514_max98927.c > from Harsha Priya <harshapriya.n@intel.com> and > Vamshi Krishna Gopal <vamshi.krishna.gopal@intel.com> > > Cc: <stable@vger.kernel.org> # 5.4+ > Signed-off-by: Lukasz Majczak <lma@semihalf.com> > --- > Hi, > This is basically a cherry-pick of this change: > https://patchwork.kernel.org/project/alsa-devel/patch/1595432147-11166-1-git-send-email-harshapriya.n@intel.com/ > just applied to the kbl_da7219_max98927. > Best regards, > Lukasz Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> > > sound/soc/intel/boards/kbl_da7219_max98927.c | 38 +++++++++++++++----- > 1 file changed, 30 insertions(+), 8 deletions(-) > > diff --git a/sound/soc/intel/boards/kbl_da7219_max98927.c b/sound/soc/intel/boards/kbl_da7219_max98927.c > index 9dfe5bd9180d..4b7b4a044f81 100644 > --- a/sound/soc/intel/boards/kbl_da7219_max98927.c > +++ b/sound/soc/intel/boards/kbl_da7219_max98927.c > @@ -284,11 +284,33 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, > struct snd_interval *chan = 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; > + struct snd_soc_dpcm *dpcm, *rtd_dpcm = NULL; > > + /* > + * The following loop will be called only for playback stream > + * In this platform, there is only one playback device on every SSP > + */ > + for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { > + rtd_dpcm = dpcm; > + break; > + } > + > + /* > + * This following loop will be called only for capture stream > + * In this platform, there is only one capture device on every SSP > + */ > + for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_CAPTURE, dpcm) { > + rtd_dpcm = dpcm; > + break; > + } > + > + if (!rtd_dpcm) > + return -EINVAL; > + > + /* > + * The above 2 loops are mutually exclusive based on the stream direction, > + * thus rtd_dpcm variable will never be overwritten > + */ > /* > * Topology for kblda7219m98373 & kblmax98373 supports only S24_LE, > * where as kblda7219m98927 & kblmax98927 supports S16_LE by default. > @@ -311,9 +333,9 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, > /* > * 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")) { > + if (!strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Port") || > + !strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Headset Playback") || > + !strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Capture Port")) { > rate->min = rate->max = 48000; > chan->min = chan->max = 2; > snd_mask_none(fmt); > @@ -324,7 +346,7 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, > * 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")) > + if (!strcmp(rtd_dpcm->be->dai_link->name, "SSP0-Codec")) > snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); > > return 0; >
diff --git a/sound/soc/intel/boards/kbl_da7219_max98927.c b/sound/soc/intel/boards/kbl_da7219_max98927.c index 9dfe5bd9180d..4b7b4a044f81 100644 --- a/sound/soc/intel/boards/kbl_da7219_max98927.c +++ b/sound/soc/intel/boards/kbl_da7219_max98927.c @@ -284,11 +284,33 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_interval *chan = 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; + struct snd_soc_dpcm *dpcm, *rtd_dpcm = NULL; + /* + * The following loop will be called only for playback stream + * In this platform, there is only one playback device on every SSP + */ + for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { + rtd_dpcm = dpcm; + break; + } + + /* + * This following loop will be called only for capture stream + * In this platform, there is only one capture device on every SSP + */ + for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_CAPTURE, dpcm) { + rtd_dpcm = dpcm; + break; + } + + if (!rtd_dpcm) + return -EINVAL; + + /* + * The above 2 loops are mutually exclusive based on the stream direction, + * thus rtd_dpcm variable will never be overwritten + */ /* * Topology for kblda7219m98373 & kblmax98373 supports only S24_LE, * where as kblda7219m98927 & kblmax98927 supports S16_LE by default. @@ -311,9 +333,9 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, /* * 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")) { + if (!strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Port") || + !strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Headset Playback") || + !strcmp(rtd_dpcm->fe->dai_link->name, "Kbl Audio Capture Port")) { rate->min = rate->max = 48000; chan->min = chan->max = 2; snd_mask_none(fmt); @@ -324,7 +346,7 @@ static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, * 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")) + if (!strcmp(rtd_dpcm->be->dai_link->name, "SSP0-Codec")) snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); return 0;
kabylake_ssp_fixup function uses snd_soc_dpcm to identify the codecs DAIs. The HW parameters are changed based on the codec DAI of the stream. The earlier approach to get snd_soc_dpcm was using container_of() macro on snd_pcm_hw_params. The structures have been modified over time and snd_soc_dpcm does not have snd_pcm_hw_params as a reference but as a copy. This causes the current driver to crash when used. This patch changes the way snd_soc_dpcm is extracted. snd_soc_pcm_runtime holds 2 dpcm instances (one for playback and one for capture). 2 codecs on the SSP are dmic (capture) and speakers (playback). Based on the stream direction, snd_soc_dpcm is extracted from snd_soc_pcm_runtime. Tested for all use cases of the driver. Based on similar fix in kbl_rt5663_rt5514_max98927.c from Harsha Priya <harshapriya.n@intel.com> and Vamshi Krishna Gopal <vamshi.krishna.gopal@intel.com> Cc: <stable@vger.kernel.org> # 5.4+ Signed-off-by: Lukasz Majczak <lma@semihalf.com> --- Hi, This is basically a cherry-pick of this change: https://patchwork.kernel.org/project/alsa-devel/patch/1595432147-11166-1-git-send-email-harshapriya.n@intel.com/ just applied to the kbl_da7219_max98927. Best regards, Lukasz sound/soc/intel/boards/kbl_da7219_max98927.c | 38 +++++++++++++++----- 1 file changed, 30 insertions(+), 8 deletions(-)