Helps push the register cache code down out of ASoC and improves resume times by using the more efficient regmap cache sync code.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/wm8978.c | 116 ++++++++++++++++++++++++++++++++++++--------- sound/soc/codecs/wm8978.h | 2 + 2 files changed, 96 insertions(+), 22 deletions(-)
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c index 0ab339c..5ff8734d 100644 --- a/sound/soc/codecs/wm8978.c +++ b/sound/soc/codecs/wm8978.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> +#include <linux/regmap.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> @@ -29,27 +30,74 @@
#include "wm8978.h"
-/* wm8978 register cache. Note that register 0 is not included in the cache. */ -static const u16 wm8978_reg[WM8978_CACHEREGNUM] = { - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x00...0x03 */ - 0x0050, 0x0000, 0x0140, 0x0000, /* 0x04...0x07 */ - 0x0000, 0x0000, 0x0000, 0x00ff, /* 0x08...0x0b */ - 0x00ff, 0x0000, 0x0100, 0x00ff, /* 0x0c...0x0f */ - 0x00ff, 0x0000, 0x012c, 0x002c, /* 0x10...0x13 */ - 0x002c, 0x002c, 0x002c, 0x0000, /* 0x14...0x17 */ - 0x0032, 0x0000, 0x0000, 0x0000, /* 0x18...0x1b */ - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x1c...0x1f */ - 0x0038, 0x000b, 0x0032, 0x0000, /* 0x20...0x23 */ - 0x0008, 0x000c, 0x0093, 0x00e9, /* 0x24...0x27 */ - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x28...0x2b */ - 0x0033, 0x0010, 0x0010, 0x0100, /* 0x2c...0x2f */ - 0x0100, 0x0002, 0x0001, 0x0001, /* 0x30...0x33 */ - 0x0039, 0x0039, 0x0039, 0x0039, /* 0x34...0x37 */ - 0x0001, 0x0001, /* 0x38...0x3b */ +static const struct reg_default wm8978_reg_defaults[] = { + { 1, 0x0000 }, + { 2, 0x0000 }, + { 3, 0x0000 }, + { 4, 0x0050 }, + { 5, 0x0000 }, + { 6, 0x0140 }, + { 7, 0x0000 }, + { 8, 0x0000 }, + { 9, 0x0000 }, + { 10, 0x0000 }, + { 11, 0x00ff }, + { 12, 0x00ff }, + { 13, 0x0000 }, + { 14, 0x0100 }, + { 15, 0x00ff }, + { 16, 0x00ff }, + { 17, 0x0000 }, + { 18, 0x012c }, + { 19, 0x002c }, + { 20, 0x002c }, + { 21, 0x002c }, + { 22, 0x002c }, + { 23, 0x0000 }, + { 24, 0x0032 }, + { 25, 0x0000 }, + { 26, 0x0000 }, + { 27, 0x0000 }, + { 28, 0x0000 }, + { 29, 0x0000 }, + { 30, 0x0000 }, + { 31, 0x0000 }, + { 32, 0x0038 }, + { 33, 0x000b }, + { 34, 0x0032 }, + { 35, 0x0000 }, + { 36, 0x0008 }, + { 37, 0x000c }, + { 38, 0x0093 }, + { 39, 0x00e9 }, + { 40, 0x0000 }, + { 41, 0x0000 }, + { 42, 0x0000 }, + { 43, 0x0000 }, + { 44, 0x0033 }, + { 45, 0x0010 }, + { 46, 0x0010 }, + { 47, 0x0100 }, + { 48, 0x0100 }, + { 49, 0x0002 }, + { 50, 0x0001 }, + { 51, 0x0001 }, + { 52, 0x0039 }, + { 53, 0x0039 }, + { 54, 0x0039 }, + { 55, 0x0039 }, + { 56, 0x0001 }, + { 57, 0x0001 }, };
+static bool wm8978_volatile(struct device *dev, unsigned int reg) +{ + return reg == WM8978_RESET; +} + /* codec private data */ struct wm8978_priv { + struct regmap *regmap; unsigned int f_pllout; unsigned int f_mclk; unsigned int f_256fs; @@ -881,10 +929,14 @@ static struct snd_soc_dai_driver wm8978_dai = {
static int wm8978_suspend(struct snd_soc_codec *codec) { + struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec); + wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF); /* Also switch PLL off */ snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, 0);
+ regcache_mark_dirty(wm8978->regmap); + return 0; }
@@ -893,7 +945,7 @@ static int wm8978_resume(struct snd_soc_codec *codec) struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
/* Sync reg_cache with the hardware */ - snd_soc_cache_sync(codec); + regcache_sync(wm8978->regmap);
wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
@@ -933,7 +985,8 @@ static int wm8978_probe(struct snd_soc_codec *codec) * default hardware setting */ wm8978->sysclk = WM8978_PLL; - ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); + codec->control_data = wm8978->regmap; + 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); return ret; @@ -972,9 +1025,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8978 = { .suspend = wm8978_suspend, .resume = wm8978_resume, .set_bias_level = wm8978_set_bias_level, - .reg_cache_size = ARRAY_SIZE(wm8978_reg), - .reg_word_size = sizeof(u16), - .reg_cache_default = wm8978_reg,
.controls = wm8978_snd_controls, .num_controls = ARRAY_SIZE(wm8978_snd_controls), @@ -984,6 +1034,18 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8978 = { .num_dapm_routes = ARRAY_SIZE(wm8978_dapm_routes), };
+static const struct regmap_config wm8978_regmap_config = { + .reg_bits = 7, + .val_bits = 9, + + .max_register = WM8978_MAX_REGISTER, + .volatile_reg = wm8978_volatile, + + .cache_type = REGCACHE_RBTREE, + .reg_defaults = wm8978_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8978_reg_defaults), +}; + static __devinit int wm8978_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -995,6 +1057,13 @@ static __devinit int wm8978_i2c_probe(struct i2c_client *i2c, if (wm8978 == NULL) return -ENOMEM;
+ wm8978->regmap = regmap_init_i2c(i2c, &wm8978_regmap_config); + if (IS_ERR(wm8978->regmap)) { + ret = PTR_ERR(wm8978->regmap); + dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); + return ret; + } + i2c_set_clientdata(i2c, wm8978);
ret = snd_soc_register_codec(&i2c->dev, @@ -1005,7 +1074,10 @@ static __devinit int wm8978_i2c_probe(struct i2c_client *i2c,
static __devexit int wm8978_i2c_remove(struct i2c_client *client) { + struct wm8978_priv *wm8978 = i2c_get_clientdata(client); + snd_soc_unregister_codec(&client->dev); + regmap_exit(wm8978->regmap);
return 0; } diff --git a/sound/soc/codecs/wm8978.h b/sound/soc/codecs/wm8978.h index c75525b..6ae4349 100644 --- a/sound/soc/codecs/wm8978.h +++ b/sound/soc/codecs/wm8978.h @@ -67,6 +67,8 @@ #define WM8978_OUT3_MIXER_CONTROL 0x38 #define WM8978_OUT4_MIXER_CONTROL 0x39
+#define WM8978_MAX_REGISTER 0x39 + #define WM8978_CACHEREGNUM 58
/* Clock divider Id's */