ASoC: ab8500: Revert to using custom I/O functions

It's been reported that these break audio on Snowball so revert them
until a Snowball user has time to investigate.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 34 insertions, 32 deletions

diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c
index a0394a8f2257..79902179c657 100644
--- a/sound/soc/codecs/ab8500-codec.c
+++ b/sound/soc/codecs/ab8500-codec.c
@@ -126,8 +126,6 @@ struct ab8500_codec_drvdata_dbg {
 
 /* Private data for AB8500 device-driver */
 struct ab8500_codec_drvdata {
-        struct regmap *regmap;
-
         /* Sidetone */
         long *sid_fir_values;
         enum sid_state sid_status;
@@ -168,34 +166,48 @@ static inline const char *amic_type_str(enum amic_type type)
  */
 
 /* Read a register from the audio-bank of AB8500 */
-static int ab8500_codec_read_reg(void *context, unsigned int reg,
-                                 unsigned int *value)
+static unsigned int ab8500_codec_read_reg(struct snd_soc_codec *codec,
+                                        unsigned int reg)
 {
-        struct device *dev = context;
         int status;
+        unsigned int value = 0;
 
         u8 value8;
-        status = abx500_get_register_interruptible(dev, AB8500_AUDIO,
-                                                   reg, &value8);
-        *value = (unsigned int)value8;
+        status = abx500_get_register_interruptible(codec->dev, AB8500_AUDIO,
+                                                reg, &value8);
+        if (status < 0) {
+                dev_err(codec->dev,
+                        "%s: ERROR: Register (0x%02x:0x%02x) read failed (%d).\n",
+                        __func__, (u8)AB8500_AUDIO, (u8)reg, status);
+        } else {
+                dev_dbg(codec->dev,
+                        "%s: Read 0x%02x from register 0x%02x:0x%02x\n",
+                        __func__, value8, (u8)AB8500_AUDIO, (u8)reg);
+                value = (unsigned int)value8;
+        }
 
-        return status;
+        return value;
 }
 
 /* Write to a register in the audio-bank of AB8500 */
-static int ab8500_codec_write_reg(void *context, unsigned int reg,
-                                  unsigned int value)
+static int ab8500_codec_write_reg(struct snd_soc_codec *codec,
+                                unsigned int reg, unsigned int value)
 {
-        struct device *dev = context;
+        int status;
 
-        return abx500_set_register_interruptible(dev, AB8500_AUDIO,
-                                                 reg, value);
-}
+        status = abx500_set_register_interruptible(codec->dev, AB8500_AUDIO,
+                                                reg, value);
+        if (status < 0)
+                dev_err(codec->dev,
+                        "%s: ERROR: Register (%02x:%02x) write failed (%d).\n",
+                        __func__, (u8)AB8500_AUDIO, (u8)reg, status);
+        else
+                dev_dbg(codec->dev,
+                        "%s: Wrote 0x%02x into register %02x:%02x\n",
+                        __func__, (u8)value, (u8)AB8500_AUDIO, (u8)reg);
 
-static const struct regmap_config ab8500_codec_regmap = {
-        .reg_read = ab8500_codec_read_reg,
-        .reg_write = ab8500_codec_write_reg,
-};
+        return status;
+}
 
 /*
  * Controls - DAPM
@@ -2473,13 +2485,9 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec)
 
         dev_dbg(dev, "%s: Enter.\n", __func__);
 
-        snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
-
         /* Setup AB8500 according to board-settings */
         pdata = dev_get_platdata(dev->parent);
 
-        codec->control_data = drvdata->regmap;
-
         if (np) {
                 if (!pdata)
                         pdata = devm_kzalloc(dev,
@@ -2557,6 +2565,9 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec)
 
 static struct snd_soc_codec_driver ab8500_codec_driver = {
         .probe =                ab8500_codec_probe,
+        .read =                 ab8500_codec_read_reg,
+        .write =                ab8500_codec_write_reg,
+        .reg_word_size =        sizeof(u8),
         .controls =             ab8500_ctrls,
         .num_controls =         ARRAY_SIZE(ab8500_ctrls),
         .dapm_widgets =         ab8500_dapm_widgets,
@@ -2579,15 +2590,6 @@ static int ab8500_codec_driver_probe(struct platform_device *pdev)
         drvdata->anc_status = ANC_UNCONFIGURED;
         dev_set_drvdata(&pdev->dev, drvdata);
 
-        drvdata->regmap = devm_regmap_init(&pdev->dev, NULL, &pdev->dev,
-                                           &ab8500_codec_regmap);
-        if (IS_ERR(drvdata->regmap)) {
-                status = PTR_ERR(drvdata->regmap);
-                dev_err(&pdev->dev, "%s: Failed to allocate regmap: %d\n",
-                        __func__, status);
-                return status;
-        }
-
         dev_dbg(&pdev->dev, "%s: Register codec.\n", __func__);
         status = snd_soc_register_codec(&pdev->dev, &ab8500_codec_driver,
                                 ab8500_codec_dai,