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Date: Tue, 11 Oct 2011 20:20:53 +0800
From: Axel Lin <axel.lin@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
Liam Girdwood <lrg@...com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>,
alsa-devel@...a-project.org
Subject: [PATCH] ASoC: ak4642: convert to soc-cache
Signed-off-by: Axel Lin <axel.lin@...il.com>
---
Hi Kuninori,
This patch converts ak4642 to use soc-cache APIs.
I don't have this hardware, I'd appreciate if you can test this patch.
Thanks,
Axel
sound/soc/codecs/ak4642.c | 82 ++++++--------------------------------------
1 files changed, 12 insertions(+), 70 deletions(-)
diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index 68fc16c..80a9fe8 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -157,7 +157,6 @@ static const struct snd_kcontrol_new ak4642_snd_controls[] = {
struct ak4642_priv {
unsigned int sysclk;
enum snd_soc_control_type control_type;
- void *control_data;
};
/*
@@ -176,64 +175,6 @@ static const u16 ak4642_reg[AK4642_CACHEREGNUM] = {
0x0000,
};
-/*
- * read ak4642 register cache
- */
-static inline unsigned int ak4642_read_reg_cache(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= AK4642_CACHEREGNUM)
- return -1;
- return cache[reg];
-}
-
-/*
- * write ak4642 register cache
- */
-static inline void ak4642_write_reg_cache(struct snd_soc_codec *codec,
- u16 reg, unsigned int value)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= AK4642_CACHEREGNUM)
- return;
-
- cache[reg] = value;
-}
-
-/*
- * write to the AK4642 register space
- */
-static int ak4642_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[2];
-
- /* data is
- * D15..D8 AK4642 register offset
- * D7...D0 register data
- */
- data[0] = reg & 0xff;
- data[1] = value & 0xff;
-
- if (codec->hw_write(codec->control_data, data, 2) == 2) {
- ak4642_write_reg_cache(codec, reg, value);
- return 0;
- } else
- return -EIO;
-}
-
-static int ak4642_sync(struct snd_soc_codec *codec)
-{
- u16 *cache = codec->reg_cache;
- int i, r = 0;
-
- for (i = 0; i < AK4642_CACHEREGNUM; i++)
- r |= ak4642_write(codec, i, cache[i]);
-
- return r;
-};
-
static int ak4642_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@@ -253,8 +194,8 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
*/
snd_soc_update_bits(codec, MD_CTL4, DACH, DACH);
snd_soc_update_bits(codec, MD_CTL3, BST1, BST1);
- ak4642_write(codec, L_IVC, 0x91); /* volume */
- ak4642_write(codec, R_IVC, 0x91); /* volume */
+ snd_soc_write(codec, L_IVC, 0x91); /* volume */
+ snd_soc_write(codec, R_IVC, 0x91); /* volume */
snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMMIN | PMDAC,
PMVCM | PMMIN | PMDAC);
snd_soc_update_bits(codec, PW_MGMT2, PMHP_MASK, PMHP);
@@ -273,9 +214,9 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
* This operation came from example code of
* "ASAHI KASEI AK4642" (japanese) manual p94.
*/
- ak4642_write(codec, SG_SL1, PMMP | MGAIN0);
- ak4642_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
- ak4642_write(codec, ALC_CTL1, ALC | LMTH0);
+ snd_soc_write(codec, SG_SL1, PMMP | MGAIN0);
+ snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
+ snd_soc_write(codec, ALC_CTL1, ALC | LMTH0);
snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMADL,
PMVCM | PMADL);
snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR);
@@ -463,7 +404,7 @@ static struct snd_soc_dai_driver ak4642_dai = {
static int ak4642_resume(struct snd_soc_codec *codec)
{
- ak4642_sync(codec);
+ snd_soc_cache_sync(codec);
return 0;
}
@@ -471,11 +412,15 @@ static int ak4642_resume(struct snd_soc_codec *codec)
static int ak4642_probe(struct snd_soc_codec *codec)
{
struct ak4642_priv *ak4642 = snd_soc_codec_get_drvdata(codec);
+ int ret;
dev_info(codec->dev, "AK4642 Audio Codec %s", AK4642_VERSION);
- codec->hw_write = (hw_write_t)i2c_master_send;
- codec->control_data = ak4642->control_data;
+ ret = snd_soc_codec_set_cache_io(codec, 8, 8, ak4642->control_type);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
+ return ret;
+ }
snd_soc_add_controls(codec, ak4642_snd_controls,
ARRAY_SIZE(ak4642_snd_controls));
@@ -486,8 +431,6 @@ static int ak4642_probe(struct snd_soc_codec *codec)
static struct snd_soc_codec_driver soc_codec_dev_ak4642 = {
.probe = ak4642_probe,
.resume = ak4642_resume,
- .read = ak4642_read_reg_cache,
- .write = ak4642_write,
.reg_cache_size = ARRAY_SIZE(ak4642_reg),
.reg_word_size = sizeof(u8),
.reg_cache_default = ak4642_reg,
@@ -505,7 +448,6 @@ static __devinit int ak4642_i2c_probe(struct i2c_client *i2c,
return -ENOMEM;
i2c_set_clientdata(i2c, ak4642);
- ak4642->control_data = i2c;
ak4642->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
--
1.7.4.1
--
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