Provide an initial hookup for interrupts on the WM8962. Currently we simply report error status via log messages if an IRQ is provided for the device.

Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- include/sound/wm8962.h | 2 + sound/soc/codecs/wm8962.c | 60 ++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 61 insertions(+), 1 deletions(-)

diff --git a/include/sound/wm8962.h b/include/sound/wm8962.h index f70258e..cc32aff 100644 --- a/include/sound/wm8962.h +++ b/include/sound/wm8962.h @@ -17,6 +17,8 @@ struct wm8962_pdata { u32 gpio_init[WM8962_MAX_GPIO];

+ bool irq_active_low; + bool spk_mono; /* Speaker outputs tied together as mono */ };

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c index 12286d6..009321b 100644 --- a/sound/soc/codecs/wm8962.c +++ b/sound/soc/codecs/wm8962.c @@ -1461,6 +1461,29 @@ static struct snd_soc_dai_driver wm8962_dai = { .symmetric_rates = 1, };

+static irqreturn_t wm8962_irq(int irq, void *data) +{ + struct snd_soc_codec *codec = data; + int mask; + int active; + + mask = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2); + + active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2); + active &= ~mask; + + if (active & WM8962_FIFOS_ERR_EINT) + dev_err(codec->dev, "FIFO error\n"); + + if (active & WM8962_TEMP_SHUT_EINT) + dev_crit(codec->dev, "Thermal shutdown\n"); + + /* Acknowledge the interrupts */ + snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active); + + return IRQ_HANDLED; +} + #ifdef CONFIG_PM static int wm8962_resume(struct snd_soc_codec *codec) { @@ -1632,7 +1655,9 @@ static int wm8962_probe(struct snd_soc_codec *codec) int ret; struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); struct wm8962_pdata *pdata = dev_get_platdata(codec->dev); - int i; + struct i2c_client *i2c = container_of(codec->dev, struct i2c_client, + dev); + int i, trigger, irq_pol;

wm8962->codec = codec;

@@ -1748,6 +1773,34 @@ static int wm8962_probe(struct snd_soc_codec *codec)

wm8962_init_beep(codec);

+ if (i2c->irq) { + if (pdata && pdata->irq_active_low) { + trigger = IRQF_TRIGGER_LOW; + irq_pol = WM8962_IRQ_POL; + } else { + trigger = IRQF_TRIGGER_HIGH; + irq_pol = 0; + } + + snd_soc_update_bits(codec, WM8962_INTERRUPT_CONTROL, + WM8962_IRQ_POL, irq_pol); + + ret = request_threaded_irq(i2c->irq, NULL, wm8962_irq, + trigger | IRQF_ONESHOT, + "wm8962", codec); + if (ret != 0) { + dev_err(codec->dev, "Failed to request IRQ %d: %d\n", + i2c->irq, ret); + /* Non-fatal */ + } else { + /* Enable error reporting IRQs by default */ + snd_soc_update_bits(codec, + WM8962_INTERRUPT_STATUS_2_MASK, + WM8962_TEMP_SHUT_EINT | + WM8962_FIFOS_ERR_EINT, 0); + } + } + return 0;

err_enable: @@ -1762,8 +1815,13 @@ err: static int wm8962_remove(struct snd_soc_codec *codec) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); + struct i2c_client *i2c = container_of(codec->dev, struct i2c_client, + dev); int i;

+ if (i2c->irq) + free_irq(i2c->irq, codec); + wm8962_free_beep(codec); for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++) regulator_unregister_notifier(wm8962->supplies[i].consumer,