This patch is to fix interrupt fails when resume back.
In solution, we add IRQ re-initiation,
and reconstruct suspend and resume with set_bias_level function.
Signed-off-by: John Hsu <KCHSU0@xxxxxxxxxxx>
---
sound/soc/codecs/nau8825.c | 42 ++++++++++++++++++++++++++++++++++++------
1 file changed, 36 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
index 504c969..2e2e11a 100644
--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -1092,6 +1092,36 @@ static int nau8825_set_sysclk(struct snd_soc_codec *codec, int clk_id,
return nau8825_configure_sysclk(nau8825, clk_id, freq);
}
+static int nau8825_resume_setup(struct nau8825 *nau8825)
+{
+ struct regmap *regmap = nau8825->regmap;
+
+ /* IRQ Output Enable */
+ regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
+ NAU8825_IRQ_OUTPUT_EN, NAU8825_IRQ_OUTPUT_EN);
+
+ /* Enable internal VCO needed for interruptions */
+ nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
+
+ /* Enable DDACR needed for interrupts */
+ regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
+ NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR);
+
+ /* Chip needs one FSCLK cycle in order to generate interrupts,
+ * as we cannot guarantee one will be provided by the system. Turning
+ * master mode on then off enables us to generate that FSCLK cycle
+ * with a minimum of contention on the clock bus.
+ */
+ regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
+ NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
+ regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
+ NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
+
+ nau8825_restart_jack_detection(regmap);
+
+ return 0;
+}
+
static int nau8825_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
@@ -1121,6 +1151,8 @@ static int nau8825_set_bias_level(struct snd_soc_codec *codec,
"Failed to sync cache: %d\n", ret);
return ret;
}
+ if (nau8825->irq)
+ nau8825_resume_setup(nau8825);
}
break;
@@ -1330,24 +1362,22 @@ static int nau8825_i2c_remove(struct i2c_client *client)
#ifdef CONFIG_PM_SLEEP
static int nau8825_suspend(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
struct nau8825 *nau8825 = dev_get_drvdata(dev);
+ struct snd_soc_codec *codec = snd_soc_dapm_to_codec(nau8825->dapm);
- disable_irq(client->irq);
+ disable_irq(nau8825->irq);
+ snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
regcache_cache_only(nau8825->regmap, true);
- regcache_mark_dirty(nau8825->regmap);
return 0;
}
static int nau8825_resume(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
struct nau8825 *nau8825 = dev_get_drvdata(dev);
regcache_cache_only(nau8825->regmap, false);
- regcache_sync(nau8825->regmap);
- enable_irq(client->irq);
+ enable_irq(nau8825->irq);
return 0;
}
--
2.6.4
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
