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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-01-26 17:28:49 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-01-26 18:39:24 +0000
commit62c1c40127e351de7fbc1d8c782f7508f8314aab (patch)
tree10f0a111dfc209c9c9473ccae90b557e91384fea /sound/soc/codecs/wm5100.c
parent17e3e57b65720628754e9afc6919e30776c0c822 (diff)
downloadblackbird-op-linux-62c1c40127e351de7fbc1d8c782f7508f8314aab.tar.gz
blackbird-op-linux-62c1c40127e351de7fbc1d8c782f7508f8314aab.zip
ASoC: wm5100: Use pm_runtime for powerdown managment
Using pm_runtime to decide if the device should go into full power down has the dual advantage of allowing easier integration with non-DAPM reasons to power on the device (like the FLL) and allowing userspace to control the final power down which is useful for tuning retention of DSP firmware. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm5100.c')
-rw-r--r--sound/soc/codecs/wm5100.c116
1 files changed, 56 insertions, 60 deletions
diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index 39de946bf259..c6c382197fe2 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -18,6 +18,7 @@
#include <linux/gcd.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
+#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/fixed.h>
#include <linux/slab.h>
@@ -1261,54 +1262,6 @@ static const __devinitdata struct reg_default wm5100_reva_patches[] = {
{ WM5100_AUDIO_IF_3_19, 1 },
};
-static int wm5100_set_bias_level(struct snd_soc_codec *codec,
- enum snd_soc_bias_level level)
-{
- struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
- int ret;
-
- switch (level) {
- case SND_SOC_BIAS_ON:
- break;
-
- case SND_SOC_BIAS_PREPARE:
- break;
-
- case SND_SOC_BIAS_STANDBY:
- if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
- ret = regulator_bulk_enable(ARRAY_SIZE(wm5100->core_supplies),
- wm5100->core_supplies);
- if (ret != 0) {
- dev_err(codec->dev,
- "Failed to enable supplies: %d\n",
- ret);
- return ret;
- }
-
- if (wm5100->pdata.ldo_ena) {
- gpio_set_value_cansleep(wm5100->pdata.ldo_ena,
- 1);
- msleep(2);
- }
-
- regcache_cache_only(wm5100->regmap, false);
- regcache_sync(wm5100->regmap);
- }
- break;
-
- case SND_SOC_BIAS_OFF:
- regcache_cache_only(wm5100->regmap, true);
- if (wm5100->pdata.ldo_ena)
- gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
- regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
- wm5100->core_supplies);
- break;
- }
- codec->dapm.bias_level = level;
-
- return 0;
-}
-
static int wm5100_dai_to_base(struct snd_soc_dai *dai)
{
switch (dai->id) {
@@ -1836,6 +1789,8 @@ static int wm5100_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
if (!Fout) {
dev_dbg(codec->dev, "FLL%d disabled", fll_id);
+ if (fll->fout)
+ pm_runtime_put(codec->dev);
fll->fout = 0;
snd_soc_update_bits(codec, base + 1, WM5100_FLL1_ENA, 0);
return 0;
@@ -1880,6 +1835,8 @@ static int wm5100_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
/* Clear any pending completions */
try_wait_for_completion(&fll->lock);
+ pm_runtime_get_sync(codec->dev);
+
snd_soc_update_bits(codec, base + 1, WM5100_FLL1_ENA, WM5100_FLL1_ENA);
if (i2c->irq)
@@ -1914,6 +1871,7 @@ static int wm5100_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
}
if (i == timeout) {
dev_err(codec->dev, "FLL%d lock timed out\n", fll_id);
+ pm_runtime_put(codec->dev);
return -ETIMEDOUT;
}
@@ -2377,9 +2335,6 @@ static int wm5100_probe(struct snd_soc_codec *codec)
return ret;
}
- regcache_cache_only(wm5100->regmap, true);
-
-
for (i = 0; i < ARRAY_SIZE(wm5100_dig_vu); i++)
snd_soc_update_bits(codec, wm5100_dig_vu[i], WM5100_OUT_VU,
WM5100_OUT_VU);
@@ -2405,14 +2360,6 @@ static int wm5100_probe(struct snd_soc_codec *codec)
}
}
- /* We'll get woken up again when the system has something useful
- * for us to do.
- */
- if (wm5100->pdata.ldo_ena)
- gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
- regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
- wm5100->core_supplies);
-
return 0;
err_gpio:
@@ -2444,7 +2391,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm5100 = {
.set_sysclk = wm5100_set_sysclk,
.set_pll = wm5100_set_fll,
- .set_bias_level = wm5100_set_bias_level,
.idle_bias_off = 1,
.reg_cache_size = WM5100_MAX_REGISTER,
.volatile_register = wm5100_soc_volatile,
@@ -2661,6 +2607,10 @@ static __devinit int wm5100_i2c_probe(struct i2c_client *i2c,
}
}
+ pm_runtime_set_active(&i2c->dev);
+ pm_runtime_enable(&i2c->dev);
+ pm_request_idle(&i2c->dev);
+
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm5100, wm5100_dai,
ARRAY_SIZE(wm5100_dai));
@@ -2714,6 +2664,51 @@ static __devexit int wm5100_i2c_remove(struct i2c_client *i2c)
return 0;
}
+#ifdef CONFIG_PM_RUNTIME
+static int wm5100_runtime_suspend(struct device *dev)
+{
+ struct wm5100_priv *wm5100 = dev_get_drvdata(dev);
+
+ regcache_cache_only(wm5100->regmap, true);
+ regcache_mark_dirty(wm5100->regmap);
+ if (wm5100->pdata.ldo_ena)
+ gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
+ regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
+ wm5100->core_supplies);
+
+ return 0;
+}
+
+static int wm5100_runtime_resume(struct device *dev)
+{
+ struct wm5100_priv *wm5100 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm5100->core_supplies),
+ wm5100->core_supplies);
+ if (ret != 0) {
+ dev_err(dev, "Failed to enable supplies: %d\n",
+ ret);
+ return ret;
+ }
+
+ if (wm5100->pdata.ldo_ena) {
+ gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 1);
+ msleep(2);
+ }
+
+ regcache_cache_only(wm5100->regmap, false);
+ regcache_sync(wm5100->regmap);
+
+ return 0;
+}
+#endif
+
+static struct dev_pm_ops wm5100_pm = {
+ SET_RUNTIME_PM_OPS(wm5100_runtime_suspend, wm5100_runtime_resume,
+ NULL)
+};
+
static const struct i2c_device_id wm5100_i2c_id[] = {
{ "wm5100", 0 },
{ }
@@ -2724,6 +2719,7 @@ static struct i2c_driver wm5100_i2c_driver = {
.driver = {
.name = "wm5100",
.owner = THIS_MODULE,
+ .pm = &wm5100_pm,
},
.probe = wm5100_i2c_probe,
.remove = __devexit_p(wm5100_i2c_remove),
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