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ASoC: Implement WM8994 thermal warning and shutdown interrupt support 

ALSA doesn't really have good mechanisms for dealing with these so we just
log them - the hardware already has automatic shutdown support.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-08-16 12:01:27 +09:00
parent 1ddc07d0f1
commit f0b182b003
1 changed files with 26 additions and 0 deletions
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26
sound/soc/codecs/wm8994.c
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@ -3045,6 +3045,24 @@ static irqreturn_t wm8994_fifo_error(int irq, void *data)
return IRQ_HANDLED;
}
static irqreturn_t wm8994_temp_warn(int irq, void *data)
{
struct snd_soc_codec *codec = data;
dev_err(codec->dev, "Thermal warning\n");
return IRQ_HANDLED;
}
static irqreturn_t wm8994_temp_shut(int irq, void *data)
{
struct snd_soc_codec *codec = data;
dev_crit(codec->dev, "Thermal shutdown\n");
return IRQ_HANDLED;
}
static int wm8994_codec_probe(struct snd_soc_codec *codec)
{
struct wm8994 *control;
@ -3123,6 +3141,10 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
wm8994_request_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR,
wm8994_fifo_error, "FIFO error", codec);
wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_TEMP_WARN,
wm8994_temp_warn, "Thermal warning", codec);
wm8994_request_irq(wm8994->wm8994, WM8994_IRQ_TEMP_SHUT,
wm8994_temp_shut, "Thermal shutdown", codec);
ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
wm_hubs_dcs_done, "DC servo done",
@ -3387,6 +3409,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
wm8994_free_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
&wm8994->hubs);
wm8994_free_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR, codec);
wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_SHUT, codec);
wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_WARN, codec);
err:
kfree(wm8994);
return ret;
@ -3409,6 +3433,8 @@ static int wm8994_codec_remove(struct snd_soc_codec *codec)
wm8994_free_irq(codec->control_data, WM8994_IRQ_DCS_DONE,
&wm8994->hubs);
wm8994_free_irq(codec->control_data, WM8994_IRQ_FIFOS_ERR, codec);
wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_SHUT, codec);
wm8994_free_irq(codec->control_data, WM8994_IRQ_TEMP_WARN, codec);
switch (control->type) {
case WM8994: