MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 23:13:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

ASoC: SOF: Intel: hda-pcm: Follow the pause_supported flag to drop PAUSE support

Browse Source 
If the stream's pause_supported flag is false then mask out the PAUSE
support, so user space will be prevented to use it.

Introduce a module parameter to ignore the pause_supported flag, named as
force_pause_support to allow testing of the PAUSE feature.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Link: https://patch.msgid.link/20241213101123.27318-3-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2024-12-13 12:11:23 +02:00 committed by Mark Brown
parent 70a667d70c
commit 3a47319d2d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
sound/soc/sof/intel/hda-pcm.c
View File

@ -37,6 +37,11 @@ static bool hda_disable_rewinds;
module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444);
MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds");
static int hda_force_pause_support = -1;
module_param_named(force_pause_support, hda_force_pause_support, int, 0444);
MODULE_PARM_DESC(force_pause_support,
"Pause support: -1: Use default, 0: Disable, 1: Enable (default -1)");
u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate)
{
switch (rate) {
@ -240,6 +245,16 @@ int hda_dsp_pcm_open(struct snd_sof_dev *sdev,
if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE)
runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE;
/*
* Do not advertise the PAUSE support if it is forced to be disabled via
* module parameter or if the pause_supported is false for the PCM
* device
*/
if (hda_force_pause_support == 0 ||
(hda_force_pause_support == -1 &&
!spcm->stream[substream->stream].pause_supported))
runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE;
if (hda_always_enable_dmi_l1 ||
direction == SNDRV_PCM_STREAM_PLAYBACK ||
spcm->stream[substream->stream].d0i3_compatible)