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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-24 11:26:39 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-24 11:26:39 +0000
commita1c1f770e3653bfcd5dd664d8471f70d220e19f3 (patch)
treefdf3001d6608d8d8c715da7ea84c0d32fc33a9a7 /sound/soc/codecs/twl4030.c
parentd50a87402e29e16a63152be810d9723ce4d87e37 (diff)
parent2ab46c9390e74368a38ddb5aa525124518df8b69 (diff)
Merge branch 'topic/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 into for-2.6.38
Diffstat (limited to 'sound/soc/codecs/twl4030.c')
-rw-r--r--sound/soc/codecs/twl4030.c37
1 files changed, 26 insertions, 11 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index 0488d5514cd..c173cf00f5c 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -232,6 +232,16 @@ static int twl4030_write(struct snd_soc_codec *codec,
return 0;
}
+static inline void twl4030_wait_ms(int time)
+{
+ if (time < 60) {
+ time *= 1000;
+ usleep_range(time, time + 500);
+ } else {
+ msleep(time);
+ }
+}
+
static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable)
{
struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
@@ -337,10 +347,14 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
twl4030_write(codec, TWL4030_REG_ANAMICL,
reg | TWL4030_CNCL_OFFSET_START);
- /* wait for offset cancellation to complete */
+ /*
+ * Wait for offset cancellation to complete.
+ * Since this takes a while, do not slam the i2c.
+ * Start polling the status after ~20ms.
+ */
+ msleep(20);
do {
- /* this takes a little while, so don't slam i2c */
- udelay(2000);
+ usleep_range(1000, 2000);
twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte,
TWL4030_REG_ANAMICL);
} while ((i++ < 100) &&
@@ -724,9 +738,12 @@ static void headset_ramp(struct snd_soc_codec *codec, int ramp)
/* Base values for ramp delay calculation: 2^19 - 2^26 */
unsigned int ramp_base[] = {524288, 1048576, 2097152, 4194304,
8388608, 16777216, 33554432, 67108864};
+ unsigned int delay;
hs_gain = twl4030_read_reg_cache(codec, TWL4030_REG_HS_GAIN_SET);
hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
+ delay = (ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
+ twl4030->sysclk) + 1;
/* Enable external mute control, this dramatically reduces
* the pop-noise */
@@ -750,16 +767,14 @@ static void headset_ramp(struct snd_soc_codec *codec, int ramp)
hs_pop |= TWL4030_RAMP_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
/* Wait ramp delay time + 1, so the VMID can settle */
- mdelay((ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
- twl4030->sysclk) + 1);
+ twl4030_wait_ms(delay);
} else {
/* Headset ramp-down _not_ according to
* the TRM, but in a way that it is working */
hs_pop &= ~TWL4030_RAMP_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
/* Wait ramp delay time + 1, so the VMID can settle */
- mdelay((ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
- twl4030->sysclk) + 1);
+ twl4030_wait_ms(delay);
/* Bypass the reg_cache to mute the headset */
twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
hs_gain & (~0x0f),
@@ -834,7 +849,7 @@ static int digimic_event(struct snd_soc_dapm_widget *w,
struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(w->codec);
if (twl4030->digimic_delay)
- mdelay(twl4030->digimic_delay);
+ twl4030_wait_ms(twl4030->digimic_delay);
return 0;
}
@@ -2257,9 +2272,12 @@ static int twl4030_soc_probe(struct snd_soc_codec *codec)
static int twl4030_soc_remove(struct snd_soc_codec *codec)
{
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
+
/* Reset registers to their chip default before leaving */
twl4030_reset_registers(codec);
twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ kfree(twl4030);
return 0;
}
@@ -2291,10 +2309,7 @@ static int __devinit twl4030_codec_probe(struct platform_device *pdev)
static int __devexit twl4030_codec_remove(struct platform_device *pdev)
{
- struct twl4030_priv *twl4030 = dev_get_drvdata(&pdev->dev);
-
snd_soc_unregister_codec(&pdev->dev);
- kfree(twl4030);
return 0;
}