[alsa-devel] [PATCH 1/2] ASoC: wm8741: Move regulator acquisition to I2C/SPI probe()
Better style as we acquire resources before trying the ASoC card probe.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/wm8741.c | 37 ++++++++++++++++++++++--------------- 1 file changed, 22 insertions(+), 15 deletions(-)
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c index 35f3d23..742744b 100644 --- a/sound/soc/codecs/wm8741.c +++ b/sound/soc/codecs/wm8741.c @@ -403,17 +403,6 @@ static int wm8741_probe(struct snd_soc_codec *codec) { struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); int ret = 0; - int i; - - for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) - wm8741->supplies[i].supply = wm8741_supply_names[i]; - - ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8741->supplies), - wm8741->supplies); - if (ret != 0) { - dev_err(codec->dev, "Failed to request supplies: %d\n", ret); - goto err; - }
ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); @@ -450,7 +439,6 @@ static int wm8741_probe(struct snd_soc_codec *codec) err_enable: regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); err_get: - regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); err: return ret; } @@ -460,7 +448,6 @@ static int wm8741_remove(struct snd_soc_codec *codec) struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); - regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
return 0; } @@ -492,13 +479,23 @@ static int wm8741_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8741_priv *wm8741; - int ret; + int ret, i;
wm8741 = devm_kzalloc(&i2c->dev, sizeof(struct wm8741_priv), GFP_KERNEL); if (wm8741 == NULL) return -ENOMEM;
+ for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) + wm8741->supplies[i].supply = wm8741_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), + wm8741->supplies); + if (ret != 0) { + dev_err(codec->dev, "Failed to request supplies: %d\n", ret); + goto err; + } + i2c_set_clientdata(i2c, wm8741); wm8741->control_type = SND_SOC_I2C;
@@ -536,13 +533,23 @@ static struct i2c_driver wm8741_i2c_driver = { static int __devinit wm8741_spi_probe(struct spi_device *spi) { struct wm8741_priv *wm8741; - int ret; + int ret, i;
wm8741 = devm_kzalloc(&spi->dev, sizeof(struct wm8741_priv), GFP_KERNEL); if (wm8741 == NULL) return -ENOMEM;
+ for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) + wm8741->supplies[i].supply = wm8741_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), + wm8741->supplies); + if (ret != 0) { + dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); + goto err; + } + wm8741->control_type = SND_SOC_SPI; spi_set_drvdata(spi, wm8741);
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/wm8741.c | 86 ++++++++++++++++++++++++++++++++------------- 1 file changed, 62 insertions(+), 24 deletions(-)
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c index 742744b..4281a08 100644 --- a/sound/soc/codecs/wm8741.c +++ b/sound/soc/codecs/wm8741.c @@ -18,6 +18,7 @@ #include <linux/pm.h> #include <linux/i2c.h> #include <linux/spi/spi.h> +#include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/of_device.h> @@ -40,26 +41,43 @@ static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = {
/* codec private data */ struct wm8741_priv { - enum snd_soc_control_type control_type; + struct regmap *regmap; struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES]; unsigned int sysclk; struct snd_pcm_hw_constraint_list *sysclk_constraints; };
-static const u16 wm8741_reg_defaults[WM8741_REGISTER_COUNT] = { - 0x0000, /* R0 - DACLLSB Attenuation */ - 0x0000, /* R1 - DACLMSB Attenuation */ - 0x0000, /* R2 - DACRLSB Attenuation */ - 0x0000, /* R3 - DACRMSB Attenuation */ - 0x0000, /* R4 - Volume Control */ - 0x000A, /* R5 - Format Control */ - 0x0000, /* R6 - Filter Control */ - 0x0000, /* R7 - Mode Control 1 */ - 0x0002, /* R8 - Mode Control 2 */ - 0x0000, /* R9 - Reset */ - 0x0002, /* R32 - ADDITONAL_CONTROL_1 */ +static const struct reg_default wm8741_reg_defaults[] = { + { 0, 0x0000 }, /* R0 - DACLLSB Attenuation */ + { 1, 0x0000 }, /* R1 - DACLMSB Attenuation */ + { 2, 0x0000 }, /* R2 - DACRLSB Attenuation */ + { 3, 0x0000 }, /* R3 - DACRMSB Attenuation */ + { 4, 0x0000 }, /* R4 - Volume Control */ + { 5, 0x000A }, /* R5 - Format Control */ + { 6, 0x0000 }, /* R6 - Filter Control */ + { 7, 0x0000 }, /* R7 - Mode Control 1 */ + { 8, 0x0002 }, /* R8 - Mode Control 2 */ + { 32, 0x0002 }, /* R32 - ADDITONAL_CONTROL_1 */ };
+static bool wm8741_readable(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM8741_DACLLSB_ATTENUATION: + case WM8741_DACLMSB_ATTENUATION: + case WM8741_DACRLSB_ATTENUATION: + case WM8741_DACRMSB_ATTENUATION: + case WM8741_VOLUME_CONTROL: + case WM8741_FORMAT_CONTROL: + case WM8741_FILTER_CONTROL: + case WM8741_MODE_CONTROL_1: + case WM8741_MODE_CONTROL_2: + case WM8741_ADDITIONAL_CONTROL_1: + return true; + default: + return false; + } +}
static int wm8741_reset(struct snd_soc_codec *codec) { @@ -411,7 +429,7 @@ static int wm8741_probe(struct snd_soc_codec *codec) goto err_get; }
- ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8741->control_type); + ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP); if (ret != 0) { dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); goto err_enable; @@ -439,7 +457,6 @@ static int wm8741_probe(struct snd_soc_codec *codec) err_enable: regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); err_get: -err: return ret; }
@@ -456,9 +473,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8741 = { .probe = wm8741_probe, .remove = wm8741_remove, .resume = wm8741_resume, - .reg_cache_size = ARRAY_SIZE(wm8741_reg_defaults), - .reg_word_size = sizeof(u16), - .reg_cache_default = wm8741_reg_defaults,
.controls = wm8741_snd_controls, .num_controls = ARRAY_SIZE(wm8741_snd_controls), @@ -474,6 +488,18 @@ static const struct of_device_id wm8741_of_match[] = { }; MODULE_DEVICE_TABLE(of, wm8741_of_match);
+static const struct regmap_config wm8741_regmap = { + .reg_bits = 7, + .val_bits = 9, + .max_register = WM8741_MAX_REGISTER, + + .reg_defaults = wm8741_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8741_reg_defaults), + .cache_type = REGCACHE_RBTREE, + + .readable_reg = wm8741_readable, +}; + #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) static int wm8741_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) @@ -492,12 +518,18 @@ static int wm8741_i2c_probe(struct i2c_client *i2c, ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), wm8741->supplies); if (ret != 0) { - dev_err(codec->dev, "Failed to request supplies: %d\n", ret); - goto err; + dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + wm8741->regmap = regmap_init_i2c(i2c, &wm8741_regmap); + if (IS_ERR(wm8741->regmap)) { + ret = PTR_ERR(wm8741->regmap); + dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret); + return ret; }
i2c_set_clientdata(i2c, wm8741); - wm8741->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8741, &wm8741_dai, 1); @@ -543,14 +575,20 @@ static int __devinit wm8741_spi_probe(struct spi_device *spi) for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) wm8741->supplies[i].supply = wm8741_supply_names[i];
- ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), + ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8741->supplies), wm8741->supplies); if (ret != 0) { dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); - goto err; + return ret; + } + + wm8741->regmap = regmap_init_spi(spi, &wm8741_regmap); + if (IS_ERR(wm8741->regmap)) { + ret = PTR_ERR(wm8741->regmap); + dev_err(&spi->dev, "Failed to init regmap: %d\n", ret); + return ret; }
- wm8741->control_type = SND_SOC_SPI; spi_set_drvdata(spi, wm8741);
ret = snd_soc_register_codec(&spi->dev,
participants (1)
-
Mark Brown