system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-11-05 18:23:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

ASoC: Intel: add a status for runtime suspend/resume

Browse source 
For runtime suspend/resume, it is some different with suspend/resume,
e.g. codec power supply won't be switch off, codec jack detection
still working(to wake up system from Jack event), won't call call
snd_soc_suspend/resume, etc.

So here, we add a platform PM status, HSW_PM_STATE_RTD3, to make
the status more clear, when in idle, it will enter this status, to
transfer from HSW_PM_STATE_RTD3 to HSW_PM_STATE_D3, we will do those
extra jobs, and vice versa for resuming.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jie Yang 2015-02-05 22:56:48 +08:00 committed by Mark Brown
parent c41cda1dbe
commit cd311dd123
1 changed files with 36 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

70
sound/soc/intel/sst-haswell-pcm.c
View file

@ -119,8 +119,9 @@ struct hsw_pcm_data {
};
enum hsw_pm_state {
HSW_PM_STATE_D3 = 0,
HSW_PM_STATE_D0 = 1,
HSW_PM_STATE_D0 = 0,
HSW_PM_STATE_RTD3 = 1,
HSW_PM_STATE_D3 = 2,
};
/* private data for the driver */
@ -1035,12 +1036,12 @@ static int hsw_pcm_runtime_suspend(struct device *dev)
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct sst_hsw *hsw = pdata->hsw;
if (pdata->pm_state == HSW_PM_STATE_D3)
if (pdata->pm_state >= HSW_PM_STATE_RTD3)
return 0;
sst_hsw_dsp_runtime_suspend(hsw);
sst_hsw_dsp_runtime_sleep(hsw);
pdata->pm_state = HSW_PM_STATE_D3;
pdata->pm_state = HSW_PM_STATE_RTD3;
return 0;
}
@ -1051,7 +1052,7 @@ static int hsw_pcm_runtime_resume(struct device *dev)
struct sst_hsw *hsw = pdata->hsw;
int ret;
if (pdata->pm_state == HSW_PM_STATE_D0)
if (pdata->pm_state != HSW_PM_STATE_RTD3)
return 0;
ret = sst_hsw_dsp_load(hsw);
@ -1091,7 +1092,7 @@ static void hsw_pcm_complete(struct device *dev)
struct hsw_pcm_data *pcm_data;
int i, err;
if (pdata->pm_state == HSW_PM_STATE_D0)
if (pdata->pm_state != HSW_PM_STATE_D3)
return;
err = sst_hsw_dsp_load(hsw);
@ -1139,41 +1140,42 @@ static int hsw_pcm_prepare(struct device *dev)
if (pdata->pm_state == HSW_PM_STATE_D3)
return 0;
/* suspend all active streams */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
else if (pdata->pm_state == HSW_PM_STATE_D0) {
/* suspend all active streams */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
dev_dbg(dev, "suspending pcm %d\n", i);
snd_pcm_suspend_all(pcm_data->hsw_pcm);
if (!pcm_data->substream)
continue;
dev_dbg(dev, "suspending pcm %d\n", i);
snd_pcm_suspend_all(pcm_data->hsw_pcm);
/* We need to wait until the DSP FW stops the streams */
msleep(2);
/* We need to wait until the DSP FW stops the streams */
msleep(2);
}
/* preserve persistent memory */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
dev_dbg(dev, "saving context pcm %d\n", i);
err = sst_module_runtime_save(pcm_data->runtime,
&pcm_data->context);
if (err < 0)
dev_err(dev, "failed to save context for PCM %d\n", i);
}
/* enter D3 state and stall */
sst_hsw_dsp_runtime_suspend(hsw);
/* put the DSP to sleep */
sst_hsw_dsp_runtime_sleep(hsw);
}
snd_soc_suspend(pdata->soc_card->dev);
snd_soc_poweroff(pdata->soc_card->dev);
/* enter D3 state and stall */
sst_hsw_dsp_runtime_suspend(hsw);
/* preserve persistent memory */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
dev_dbg(dev, "saving context pcm %d\n", i);
err = sst_module_runtime_save(pcm_data->runtime,
&pcm_data->context);
if (err < 0)
dev_err(dev, "failed to save context for PCM %d\n", i);
}
/* put the DSP to sleep */
sst_hsw_dsp_runtime_sleep(hsw);
pdata->pm_state = HSW_PM_STATE_D3;
return 0;