diff options
Diffstat (limited to 'sound/soc/codecs/sta32x.c')
-rw-r--r-- | sound/soc/codecs/sta32x.c | 103 |
1 files changed, 79 insertions, 24 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c index d2f3715..7db6fa5 100644 --- a/sound/soc/codecs/sta32x.c +++ b/sound/soc/codecs/sta32x.c @@ -24,9 +24,9 @@ #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> -#include <linux/platform_device.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> +#include <linux/workqueue.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -35,6 +35,7 @@ #include <sound/initval.h> #include <sound/tlv.h> +#include <sound/sta32x.h> #include "sta32x.h" #define STA32X_RATES (SNDRV_PCM_RATE_32000 | \ @@ -73,11 +74,14 @@ static const char *sta32x_supply_names[] = { struct sta32x_priv { struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)]; struct snd_soc_codec *codec; + struct sta32x_platform_data *pdata; unsigned int mclk; unsigned int format; u32 coef_shadow[STA32X_COEF_COUNT]; + struct delayed_work watchdog_work; + int shutdown; }; static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1); @@ -260,7 +264,7 @@ static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol, return 0; } -int sta32x_sync_coef_shadow(struct snd_soc_codec *codec) +static int sta32x_sync_coef_shadow(struct snd_soc_codec *codec) { struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); unsigned int cfud; @@ -285,7 +289,7 @@ int sta32x_sync_coef_shadow(struct snd_soc_codec *codec) return 0; } -int sta32x_cache_sync(struct snd_soc_codec *codec) +static int sta32x_cache_sync(struct snd_soc_codec *codec) { unsigned int mute; int rc; @@ -302,6 +306,46 @@ int sta32x_cache_sync(struct snd_soc_codec *codec) return rc; } +/* work around ESD issue where sta32x resets and loses all configuration */ +static void sta32x_watchdog(struct work_struct *work) +{ + struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv, + watchdog_work.work); + struct snd_soc_codec *codec = sta32x->codec; + unsigned int confa, confa_cached; + + /* check if sta32x has reset itself */ + confa_cached = snd_soc_read(codec, STA32X_CONFA); + codec->cache_bypass = 1; + confa = snd_soc_read(codec, STA32X_CONFA); + codec->cache_bypass = 0; + if (confa != confa_cached) { + codec->cache_sync = 1; + sta32x_cache_sync(codec); + } + + if (!sta32x->shutdown) + schedule_delayed_work(&sta32x->watchdog_work, + round_jiffies_relative(HZ)); +} + +static void sta32x_watchdog_start(struct sta32x_priv *sta32x) +{ + if (sta32x->pdata->needs_esd_watchdog) { + sta32x->shutdown = 0; + schedule_delayed_work(&sta32x->watchdog_work, + round_jiffies_relative(HZ)); + } +} + +static void sta32x_watchdog_stop(struct sta32x_priv *sta32x) +{ + if (sta32x->pdata->needs_esd_watchdog) { + sta32x->shutdown = 1; + cancel_delayed_work_sync(&sta32x->watchdog_work); + } +} + #define SINGLE_COEF(xname, index) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .info = sta32x_coefficient_info, \ @@ -478,6 +522,7 @@ static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai, rate_min = fs; if (fs > rate_max) rate_max = fs; + break; } } } @@ -712,6 +757,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec, } sta32x_cache_sync(codec); + sta32x_watchdog_start(sta32x); } /* Power up to mute */ @@ -728,7 +774,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec, STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, STA32X_CONFF_PWDN); msleep(300); - + sta32x_watchdog_stop(sta32x); regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); break; @@ -737,7 +783,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec, return 0; } -static struct snd_soc_dai_ops sta32x_dai_ops = { +static const struct snd_soc_dai_ops sta32x_dai_ops = { .hw_params = sta32x_hw_params, .set_sysclk = sta32x_set_dai_sysclk, .set_fmt = sta32x_set_dai_fmt, @@ -756,7 +802,7 @@ static struct snd_soc_dai_driver sta32x_dai = { }; #ifdef CONFIG_PM -static int sta32x_suspend(struct snd_soc_codec *codec, pm_message_t state) +static int sta32x_suspend(struct snd_soc_codec *codec) { sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; @@ -775,9 +821,10 @@ static int sta32x_resume(struct snd_soc_codec *codec) static int sta32x_probe(struct snd_soc_codec *codec) { struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); - int i, ret = 0; + int i, ret = 0, thermal = 0; sta32x->codec = codec; + sta32x->pdata = dev_get_platdata(codec->dev); /* regulators */ for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++) @@ -820,25 +867,34 @@ static int sta32x_probe(struct snd_soc_codec *codec) snd_soc_cache_write(codec, STA32X_AUTO3, 0x00); snd_soc_cache_write(codec, STA32X_C3CFG, 0x40); - /* FIXME enable thermal warning adjustment and recovery */ + /* set thermal warning adjustment and recovery */ + if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_ADJUSTMENT_ENABLE)) + thermal |= STA32X_CONFA_TWAB; + if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_RECOVERY_ENABLE)) + thermal |= STA32X_CONFA_TWRB; snd_soc_update_bits(codec, STA32X_CONFA, - STA32X_CONFA_TWAB | STA32X_CONFA_TWRB, 0); + STA32X_CONFA_TWAB | STA32X_CONFA_TWRB, + thermal); - /* FIXME select 2.1 mode */ + /* select output configuration */ snd_soc_update_bits(codec, STA32X_CONFF, STA32X_CONFF_OCFG_MASK, - 1 << STA32X_CONFF_OCFG_SHIFT); + sta32x->pdata->output_conf + << STA32X_CONFF_OCFG_SHIFT); - /* FIXME channel to output mapping */ + /* channel to output mapping */ snd_soc_update_bits(codec, STA32X_C1CFG, STA32X_CxCFG_OM_MASK, - 0 << STA32X_CxCFG_OM_SHIFT); + sta32x->pdata->ch1_output_mapping + << STA32X_CxCFG_OM_SHIFT); snd_soc_update_bits(codec, STA32X_C2CFG, STA32X_CxCFG_OM_MASK, - 1 << STA32X_CxCFG_OM_SHIFT); + sta32x->pdata->ch2_output_mapping + << STA32X_CxCFG_OM_SHIFT); snd_soc_update_bits(codec, STA32X_C3CFG, STA32X_CxCFG_OM_MASK, - 2 << STA32X_CxCFG_OM_SHIFT); + sta32x->pdata->ch3_output_mapping + << STA32X_CxCFG_OM_SHIFT); /* initialize coefficient shadow RAM with reset values */ for (i = 4; i <= 49; i += 5) @@ -851,6 +907,9 @@ static int sta32x_probe(struct snd_soc_codec *codec) sta32x->coef_shadow[60] = 0x400000; sta32x->coef_shadow[61] = 0x400000; + if (sta32x->pdata->needs_esd_watchdog) + INIT_DELAYED_WORK(&sta32x->watchdog_work, sta32x_watchdog); + sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY); /* Bias level configuration will have done an extra enable */ regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); @@ -867,6 +926,7 @@ static int sta32x_remove(struct snd_soc_codec *codec) { struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec); + sta32x_watchdog_stop(sta32x); sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF); regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); @@ -909,28 +969,23 @@ static __devinit int sta32x_i2c_probe(struct i2c_client *i2c, struct sta32x_priv *sta32x; int ret; - sta32x = kzalloc(sizeof(struct sta32x_priv), GFP_KERNEL); + sta32x = devm_kzalloc(&i2c->dev, sizeof(struct sta32x_priv), + GFP_KERNEL); if (!sta32x) return -ENOMEM; i2c_set_clientdata(i2c, sta32x); ret = snd_soc_register_codec(&i2c->dev, &sta32x_codec, &sta32x_dai, 1); - if (ret != 0) { + if (ret != 0) dev_err(&i2c->dev, "Failed to register codec (%d)\n", ret); - kfree(sta32x); - return ret; - } - return 0; + return ret; } static __devexit int sta32x_i2c_remove(struct i2c_client *client) { - struct sta32x_priv *sta32x = i2c_get_clientdata(client); - snd_soc_unregister_codec(&client->dev); - kfree(sta32x); return 0; } |