diff options
| -rw-r--r-- | sound/soc/codecs/wm8962.c | 113 |
1 files changed, 72 insertions, 41 deletions
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c index 3dba53ace6bd..28d2e74ed01f 100644 --- a/sound/soc/codecs/wm8962.c +++ b/sound/soc/codecs/wm8962.c @@ -20,6 +20,7 @@ #include <linux/gpio.h> #include <linux/i2c.h> #include <linux/input.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> @@ -2479,9 +2480,6 @@ static void wm8962_configure_bclk(struct snd_soc_codec *codec) static int wm8962_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { - struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); - int ret; - if (level == codec->dapm.bias_level) return 0; @@ -2498,51 +2496,15 @@ static int wm8962_set_bias_level(struct snd_soc_codec *codec, break; case SND_SOC_BIAS_STANDBY: - if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { - ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies), - wm8962->supplies); - if (ret != 0) { - dev_err(codec->dev, - "Failed to enable supplies: %d\n", - ret); - return ret; - } - - regcache_cache_only(wm8962->regmap, false); - regcache_sync(wm8962->regmap); - - snd_soc_update_bits(codec, WM8962_ANTI_POP, - WM8962_STARTUP_BIAS_ENA | - WM8962_VMID_BUF_ENA, - WM8962_STARTUP_BIAS_ENA | - WM8962_VMID_BUF_ENA); - - /* Bias enable at 2*50k for ramp */ - snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, - WM8962_VMID_SEL_MASK | - WM8962_BIAS_ENA, - WM8962_BIAS_ENA | 0x180); - - msleep(5); - } - /* VMID 2*250k */ snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, WM8962_VMID_SEL_MASK, 0x100); break; case SND_SOC_BIAS_OFF: - snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, - WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, 0); - - snd_soc_update_bits(codec, WM8962_ANTI_POP, - WM8962_STARTUP_BIAS_ENA | - WM8962_VMID_BUF_ENA, 0); - - regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), - wm8962->supplies); break; } + codec->dapm.bias_level = level; return 0; } @@ -2844,6 +2806,8 @@ static int wm8962_set_fll(struct snd_soc_codec *codec, int fll_id, int source, snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, 0); + pm_runtime_put(codec->dev); + return 0; } @@ -2892,6 +2856,7 @@ static int wm8962_set_fll(struct snd_soc_codec *codec, int fll_id, int source, try_wait_for_completion(&wm8962->fll_lock); + pm_runtime_get_sync(codec->dev); snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_FRAC | WM8962_FLL_REFCLK_SRC_MASK | @@ -3689,7 +3654,9 @@ static __devinit int wm8962_i2c_probe(struct i2c_client *i2c, ret); } - regcache_cache_only(wm8962->regmap, true); + 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_wm8962, &wm8962_dai, 1); @@ -3721,6 +3688,69 @@ static __devexit int wm8962_i2c_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM_RUNTIME +static int wm8962_runtime_resume(struct device *dev) +{ + struct wm8962_priv *wm8962 = dev_get_drvdata(dev); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies), + wm8962->supplies); + if (ret != 0) { + dev_err(dev, + "Failed to enable supplies: %d\n", ret); + return ret; + } + + regcache_cache_only(wm8962->regmap, false); + regcache_sync(wm8962->regmap); + + regmap_update_bits(wm8962->regmap, WM8962_ANTI_POP, + WM8962_STARTUP_BIAS_ENA | WM8962_VMID_BUF_ENA, + WM8962_STARTUP_BIAS_ENA | WM8962_VMID_BUF_ENA); + + /* Bias enable at 2*50k for ramp */ + regmap_update_bits(wm8962->regmap, WM8962_PWR_MGMT_1, + WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, + WM8962_BIAS_ENA | 0x180); + + msleep(5); + + /* VMID back to 2x250k for standby */ + regmap_update_bits(wm8962->regmap, WM8962_PWR_MGMT_1, + WM8962_VMID_SEL_MASK, 0x100); + + dev_crit(dev, "RESUME\n"); + + return 0; +} + +static int wm8962_runtime_suspend(struct device *dev) +{ + struct wm8962_priv *wm8962 = dev_get_drvdata(dev); + + dev_crit(dev, "SUSPEND\n"); + + regmap_update_bits(wm8962->regmap, WM8962_PWR_MGMT_1, + WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, 0); + + regmap_update_bits(wm8962->regmap, WM8962_ANTI_POP, + WM8962_STARTUP_BIAS_ENA | + WM8962_VMID_BUF_ENA, 0); + + regcache_cache_only(wm8962->regmap, true); + + regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), + wm8962->supplies); + + return 0; +} +#endif + +static struct dev_pm_ops wm8962_pm = { + SET_RUNTIME_PM_OPS(wm8962_runtime_suspend, wm8962_runtime_resume, NULL) +}; + static const struct i2c_device_id wm8962_i2c_id[] = { { "wm8962", 0 }, { } @@ -3731,6 +3761,7 @@ static struct i2c_driver wm8962_i2c_driver = { .driver = { .name = "wm8962", .owner = THIS_MODULE, + .pm = &wm8962_pm, }, .probe = wm8962_i2c_probe, .remove = __devexit_p(wm8962_i2c_remove), |