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ALSA: at73c213: manage SSC clock

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Since commit 49af54ff0f ("misc: atmel-ssc: prepare clock only when
request") the SSC driver expects clients to manage the SSC clock.
This updates the at73c213 driver to enable the SSC clock whenever it is
needed.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mans Rullgard 2016-01-17 22:31:02 +00:00 committed by Takashi Iwai
parent c0bcdbdff3
commit 3568459a51
1 changed files with 11 additions and 0 deletions
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11
sound/spi/at73c213.c
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@ -221,6 +221,8 @@ static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
runtime->hw = snd_at73c213_playback_hw; runtime->hw = snd_at73c213_playback_hw;
chip->substream = substream; chip->substream = substream;
clk_enable(chip->ssc->clk);
return 0; return 0;
} }
@ -228,6 +230,7 @@ static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream)
{ {
struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
chip->substream = NULL; chip->substream = NULL;
clk_disable(chip->ssc->clk);
return 0; return 0;
} }
@ -897,6 +900,8 @@ static int snd_at73c213_dev_init(struct snd_card *card,
chip->card = card; chip->card = card;
chip->irq = -1; chip->irq = -1;
clk_enable(chip->ssc->clk);
retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip); retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
if (retval) { if (retval) {
dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq); dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq);
@ -935,6 +940,8 @@ static int snd_at73c213_dev_init(struct snd_card *card,
free_irq(chip->irq, chip); free_irq(chip->irq, chip);
chip->irq = -1; chip->irq = -1;
out: out:
clk_disable(chip->ssc->clk);
return retval; return retval;
} }
@ -1012,7 +1019,9 @@ static int snd_at73c213_remove(struct spi_device *spi)
int retval; int retval;
/* Stop playback. */ /* Stop playback. */
clk_enable(chip->ssc->clk);
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
clk_disable(chip->ssc->clk);
/* Mute sound. */ /* Mute sound. */
retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f);
@ -1080,6 +1089,7 @@ static int snd_at73c213_suspend(struct device *dev)
struct snd_at73c213 *chip = card->private_data; struct snd_at73c213 *chip = card->private_data;
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
clk_disable(chip->ssc->clk);
clk_disable(chip->board->dac_clk); clk_disable(chip->board->dac_clk);
return 0; return 0;
@ -1091,6 +1101,7 @@ static int snd_at73c213_resume(struct device *dev)
struct snd_at73c213 *chip = card->private_data; struct snd_at73c213 *chip = card->private_data;
clk_enable(chip->board->dac_clk); clk_enable(chip->board->dac_clk);
clk_enable(chip->ssc->clk);
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
return 0; return 0;