Thanks a lot Srinivas for your valuable review comments and for your time!!!
On 11/27/2020 5:39 PM, Srinivas Kandagatla wrote:
On 27/11/2020 09:56, Srinivasa Rao Mandadapu wrote:
To support playback continuation after hard suspend(bypass powerd) and resume: Prepare device in platform trigger callback. Make I2s and DMA control registers as non volatile.
Looks like there are two changes here, One is fixing the volatile registers!
Other is preparing device after suspend!
Consider splitting them!
Okay will split and share.
Fixes tag is missing here?
Actually fixing volatile registers is just partial reversal of commit b1824968221c ("ASoC: qcom: Fix enabling BCLK and LRCLK in LPAIF invalid state")
Will revert and share the patch separately.
Signed-off-by: V Sujith Kumar Reddy vsujithk@codeaurora.org Signed-off-by: Srinivasa Rao Mandadapu srivasam@codeaurora.org
Changes Since v1 and v2: -- Subject lines changed
sound/soc/qcom/lpass-cpu.c | 8 ++------ sound/soc/qcom/lpass-platform.c | 5 +++-- 2 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c index af684fd..c99be03 100644 --- a/sound/soc/qcom/lpass-cpu.c +++ b/sound/soc/qcom/lpass-cpu.c @@ -454,20 +454,16 @@ static bool lpass_cpu_regmap_volatile(struct device *dev, unsigned int reg) struct lpass_variant *v = drvdata->variant; int i; - for (i = 0; i < v->i2s_ports; ++i) - if (reg == LPAIF_I2SCTL_REG(v, i)) - return true; for (i = 0; i < v->irq_ports; ++i) if (reg == LPAIF_IRQSTAT_REG(v, i)) return true; for (i = 0; i < v->rdma_channels; ++i) - if (reg == LPAIF_RDMACURR_REG(v, i) || reg == LPAIF_RDMACTL_REG(v, i)) + if (reg == LPAIF_RDMACURR_REG(v, i)) return true; for (i = 0; i < v->wrdma_channels; ++i) - if (reg == LPAIF_WRDMACURR_REG(v, i + v->wrdma_channel_start) || - reg == LPAIF_WRDMACTL_REG(v, i + v->wrdma_channel_start)) + if (reg == LPAIF_WRDMACURR_REG(v, i + v->wrdma_channel_start)) return true; return false; diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index 80b09de..2b0a7c1 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -481,8 +481,9 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component, return -ENOTRECOVERABLE; } switch (cmd) { - case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: + lpass_platform_pcmops_prepare(component, substream);
Can you elaborate the actual issue here?
Are any other registers needs to re-programmed??
Does it make sense to use regcache_mark_dirty() regcache_sync() in pm suspend resume path, instead of calling prepare explicitly?
--srini
Yes it's working fine with regcache APIs. will update the patch.
+ case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: ret = regmap_fields_write(dmactl->enable, id, LPAIF_DMACTL_ENABLE_ON); @@ -592,7 +593,7 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component, break; } - return 0; + return ret; } static snd_pcm_uframes_t lpass_platform_pcmops_pointer(