Since commit 49af54ff0fc7 ("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 --- Changes: - enable the ssc clock only when it is required --- sound/spi/at73c213.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c index 39522367897c..fac7e6eb9529 100644 --- a/sound/spi/at73c213.c +++ b/sound/spi/at73c213.c @@ -221,6 +221,8 @@ static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream) runtime->hw = snd_at73c213_playback_hw; chip->substream = substream;
+ clk_enable(chip->ssc->clk); + 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); chip->substream = NULL; + clk_disable(chip->ssc->clk); return 0; }
@@ -897,6 +900,8 @@ static int snd_at73c213_dev_init(struct snd_card *card, chip->card = card; chip->irq = -1;
+ clk_enable(chip->ssc->clk); + retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip); if (retval) { dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq); @@ -935,6 +940,8 @@ out_irq: free_irq(chip->irq, chip); chip->irq = -1; out: + clk_disable(chip->ssc->clk); + return retval; }
@@ -1012,7 +1019,9 @@ static int snd_at73c213_remove(struct spi_device *spi) int retval;
/* Stop playback. */ + clk_enable(chip->ssc->clk); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->ssc->clk);
/* Mute sound. */ 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;
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->ssc->clk); clk_disable(chip->board->dac_clk);
return 0; @@ -1091,6 +1101,7 @@ static int snd_at73c213_resume(struct device *dev) struct snd_at73c213 *chip = card->private_data;
clk_enable(chip->board->dac_clk); + clk_enable(chip->ssc->clk); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
return 0;