ASoC: wm8580: Convert to direct regmap API usage

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 90 insertions, 26 deletions

diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c
index cc198df15e6e..02c75bec7d71 100644
--- a/sound/soc/codecs/wm8580.c
+++ b/sound/soc/codecs/wm8580.c
@@ -1,7 +1,7 @@
 /*
  * wm8580.c  --  WM8580 ALSA Soc Audio driver
  *
- * Copyright 2008-11 Wolfson Microelectronics PLC.
+ * Copyright 2008-12 Wolfson Microelectronics PLC.
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
@@ -23,6 +23,7 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/i2c.h>
+#include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/of_device.h>
@@ -157,23 +158,72 @@
  * We can't read the WM8580 register space when we
  * are using 2 wire for device control, so we cache them instead.
  */
-static const u16 wm8580_reg[] = {
-        0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
-        0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
-        0x0010, 0x0002, 0x0002, 0x00c2, /*R11*/
-        0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
-        0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
-        0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
-        0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
-        0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
-        0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
-        0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
-        0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
-        0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
-        0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
-        0x0000, 0x0000 /*R53*/
+static const struct reg_default wm8580_reg_defaults[] = {
+        {  0, 0x0121 },
+        {  1, 0x017e },
+        {  2, 0x007d },
+        {  3, 0x0014 },
+        {  4, 0x0121 },
+        {  5, 0x017e },
+        {  6, 0x007d },
+        {  7, 0x0194 },
+        {  8, 0x0010 },
+        {  9, 0x0002 },
+        { 10, 0x0002 },
+        { 11, 0x00c2 },
+        { 12, 0x0182 },
+        { 13, 0x0082 },
+        { 14, 0x000a },
+        { 15, 0x0024 },
+        { 16, 0x0009 },
+        { 17, 0x0000 },
+        { 18, 0x00ff },
+        { 19, 0x0000 },
+        { 20, 0x00ff },
+        { 21, 0x00ff },
+        { 22, 0x00ff },
+        { 23, 0x00ff },
+        { 24, 0x00ff },
+        { 25, 0x00ff },
+        { 26, 0x00ff },
+        { 27, 0x00ff },
+        { 28, 0x01f0 },
+        { 29, 0x0040 },
+        { 30, 0x0000 },
+        { 31, 0x0000 },
+        { 32, 0x0000 },
+        { 33, 0x0000 },
+        { 34, 0x0031 },
+        { 35, 0x000b },
+        { 36, 0x0039 },
+        { 37, 0x0000 },
+        { 38, 0x0010 },
+        { 39, 0x0032 },
+        { 40, 0x0054 },
+        { 41, 0x0076 },
+        { 42, 0x0098 },
+        { 43, 0x0000 },
+        { 44, 0x0000 },
+        { 45, 0x0000 },
+        { 46, 0x0000 },
+        { 47, 0x0000 },
+        { 48, 0x0000 },
+        { 49, 0x0000 },
+        { 50, 0x005e },
+        { 51, 0x003e },
+        { 52, 0x0000 },
 };
 
+static bool wm8580_volatile(struct device *dev, unsigned int reg)
+{
+        switch (reg) {
+        case WM8580_RESET:
+                return true;
+        default:
+                return false;
+        }
+}
+
 struct pll_state {
         unsigned int in;
         unsigned int out;
@@ -188,7 +238,7 @@ static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = {
 
 /* codec private data */
 struct wm8580_priv {
-        enum snd_soc_control_type control_type;
+        struct regmap *regmap;
         struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES];
         struct pll_state a;
         struct pll_state b;
@@ -203,14 +253,16 @@ static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
         struct soc_mixer_control *mc =
                 (struct soc_mixer_control *)kcontrol->private_value;
         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
-        u16 *reg_cache = codec->reg_cache;
+        struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
         unsigned int reg = mc->reg;
         unsigned int reg2 = mc->rreg;
         int ret;
 
-        /* Clear the register cache so we write without VU set */
-        reg_cache[reg] = 0;
-        reg_cache[reg2] = 0;
+        /* Clear the register cache VU so we write without VU set */
+        regcache_cache_only(wm8580->regmap, true);
+        regmap_update_bits(wm8580->regmap, reg, 0x100, 0x000);
+        regmap_update_bits(wm8580->regmap, reg2, 0x100, 0x000);
+        regcache_cache_only(wm8580->regmap, false);
 
         ret = snd_soc_put_volsw(kcontrol, ucontrol);
         if (ret < 0)
@@ -817,7 +869,7 @@ static int wm8580_probe(struct snd_soc_codec *codec)
         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
         int ret = 0,i;
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8580->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);
                 return ret;
@@ -875,9 +927,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8580 = {
         .probe =        wm8580_probe,
         .remove =       wm8580_remove,
         .set_bias_level = wm8580_set_bias_level,
-        .reg_cache_size = ARRAY_SIZE(wm8580_reg),
-        .reg_word_size = sizeof(u16),
-        .reg_cache_default = wm8580_reg,
 
         .controls = wm8580_snd_controls,
         .num_controls = ARRAY_SIZE(wm8580_snd_controls),
@@ -892,6 +941,18 @@ static const struct of_device_id wm8580_of_match[] = {
         { },
 };
 
+static const struct regmap_config wm8580_regmap = {
+        .reg_bits = 7,
+        .val_bits = 9,
+        .max_register = WM8580_MAX_REGISTER,
+
+        .reg_defaults = wm8580_reg_defaults,
+        .num_reg_defaults = ARRAY_SIZE(wm8580_reg_defaults),
+        .cache_type = REGCACHE_RBTREE,
+
+        .volatile_reg = wm8580_volatile,
+};
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 static int wm8580_i2c_probe(struct i2c_client *i2c,
                             const struct i2c_device_id *id)
@@ -904,8 +965,11 @@ static int wm8580_i2c_probe(struct i2c_client *i2c,
         if (wm8580 == NULL)
                 return -ENOMEM;
 
+        wm8580->regmap = devm_regmap_init_i2c(i2c, &wm8580_regmap);
+        if (IS_ERR(wm8580->regmap))
+                return PTR_ERR(wm8580->regmap);
+
         i2c_set_clientdata(i2c, wm8580);
-        wm8580->control_type = SND_SOC_I2C;
 
         ret =  snd_soc_register_codec(&i2c->dev,
                         &soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));