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ASoC: mchp-spdiftx: add support for system suspend/resume 

Add support for system suspend/resume by moving the enable/disable
of interrupts in mchp_spdiftx_trigger() on SNDRV_PCM_TRIGGER_SUSPEND/
SNDRV_PCM_TRIGGER_RESUME commands.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20221117123750.291911-4-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Claudiu Beznea 2022-11-17 14:37:50 +02:00 committed by Mark Brown
parent 4bf54ca60f
commit abc7edb032
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 13 additions and 9 deletions
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22
sound/soc/atmel/mchp-spdiftx.c
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@ -198,6 +198,7 @@ struct mchp_spdiftx_dev {
struct clk *pclk;
struct clk *gclk;
unsigned int fmt;
unsigned int suspend_irq;
};
static inline int mchp_spdiftx_is_running(struct mchp_spdiftx_dev *dev)
@ -318,16 +319,25 @@ static int mchp_spdiftx_trigger(struct snd_pcm_substream *substream, int cmd,
running = !!(mr & SPDIFTX_MR_TXEN_ENABLE);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_START:
regmap_write(dev->regmap, SPDIFTX_IER, dev->suspend_irq |
SPDIFTX_IR_TXUDR | SPDIFTX_IR_TXOVR);
dev->suspend_irq = 0;
fallthrough;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (!running) {
mr &= ~SPDIFTX_MR_TXEN_MASK;
mr |= SPDIFTX_MR_TXEN_ENABLE;
}
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
regmap_read(dev->regmap, SPDIFTX_IMR, &dev->suspend_irq);
fallthrough;
case SNDRV_PCM_TRIGGER_STOP:
regmap_write(dev->regmap, SPDIFTX_IDR, dev->suspend_irq |
SPDIFTX_IR_TXUDR | SPDIFTX_IR_TXOVR);
fallthrough;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (running) {
mr &= ~SPDIFTX_MR_TXEN_MASK;
@ -507,10 +517,6 @@ static int mchp_spdiftx_hw_params(struct snd_pcm_substream *substream,
dev_dbg(dev->dev, "%s(): GCLK set to %d\n", __func__,
params_rate(params) * SPDIFTX_GCLK_RATIO);
/* Enable interrupts */
regmap_write(dev->regmap, SPDIFTX_IER,
SPDIFTX_IR_TXUDR | SPDIFTX_IR_TXOVR);
regmap_write(dev->regmap, SPDIFTX_MR, mr);
return 0;
@ -521,9 +527,6 @@ static int mchp_spdiftx_hw_free(struct snd_pcm_substream *substream,
{
struct mchp_spdiftx_dev *dev = snd_soc_dai_get_drvdata(dai);
regmap_write(dev->regmap, SPDIFTX_IDR,
SPDIFTX_IR_TXUDR | SPDIFTX_IR_TXOVR);
return regmap_write(dev->regmap, SPDIFTX_CR,
SPDIFTX_CR_SWRST | SPDIFTX_CR_FCLR);
}
@ -785,6 +788,7 @@ static int mchp_spdiftx_runtime_resume(struct device *dev)
}
static const struct dev_pm_ops mchp_spdiftx_pm_ops = {
SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
RUNTIME_PM_OPS(mchp_spdiftx_runtime_suspend, mchp_spdiftx_runtime_resume,
NULL)
};