[PATCH v2] ASoC: tlv320aic23: convert to soc-cache

From: Axel Lin
Date: Thu Oct 13 2011 - 03:06:52 EST

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
---
v2: Use snd_soc_cache_write instead of snd_soc_write with cache_only flag to
write the register default value to cache for reserved registers.

sound/soc/codecs/tlv320aic23.c | 167 ++++++++++++---------------------------
1 files changed, 52 insertions(+), 115 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
index c3a4bb2..ab27dbc 100644
--- a/sound/soc/codecs/tlv320aic23.c
+++ b/sound/soc/codecs/tlv320aic23.c
@@ -47,63 +47,6 @@ static const u16 tlv320aic23_reg[] = {
0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
};

-/*
- * read tlv320aic23 register cache
- */
-static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
- *codec, unsigned int reg)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= ARRAY_SIZE(tlv320aic23_reg))
- return -1;
- return cache[reg];
-}
-
-/*
- * write tlv320aic23 register cache
- */
-static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
- u8 reg, u16 value)
-{
- u16 *cache = codec->reg_cache;
- if (reg >= ARRAY_SIZE(tlv320aic23_reg))
- return;
- cache[reg] = value;
-}
-
-/*
- * write to the tlv320aic23 register space
- */
-static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
-
- u8 data[2];
-
- /* TLV320AIC23 has 7 bit address and 9 bits of data
- * so we need to switch one data bit into reg and rest
- * of data into val
- */
-
- if (reg > 9 && reg != 15) {
- printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg);
- return -1;
- }
-
- data[0] = (reg << 1) | (value >> 8 & 0x01);
- data[1] = value & 0xff;
-
- tlv320aic23_write_reg_cache(codec, reg, value);
-
- if (codec->hw_write(codec->control_data, data, 2) == 2)
- return 0;
-
- printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__,
- value, reg);
-
- return -EIO;
-}
-
static const char *rec_src_text[] = { "Line", "Mic" };
static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};

@@ -139,8 +82,8 @@ static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
*/
val = (val >= 4) ? 4 : (3 - val);

- reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
- tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
+ reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0);
+ snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6));

return 0;
}
@@ -151,7 +94,7 @@ static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
u16 val;

- val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
+ val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0);
val = val >> 6;
val = (val >= 4) ? 4 : (3 - val);
ucontrol->value.integer.value[0] = val;
@@ -232,7 +175,6 @@ static const struct snd_soc_dapm_route tlv320aic23_intercon[] = {
/* AIC23 driver data */
struct aic23 {
enum snd_soc_control_type control_type;
- void *control_data;
int mclk;
int requested_adc;
int requested_dac;
@@ -344,7 +286,7 @@ static int find_rate(int mclk, u32 need_adc, u32 need_dac)
static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
u32 *sample_rate_adc, u32 *sample_rate_dac)
{
- int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE);
+ int src = snd_soc_read(codec, TLV320AIC23_SRATE);
int sr = (src >> 2) & 0x0f;
int val = (mclk / bosr_usb_divisor_table[src & 3]);
int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
@@ -368,7 +310,7 @@ static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
__func__, sample_rate_adc, sample_rate_dac);
return -EINVAL;
}
- tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
+ snd_soc_write(codec, TLV320AIC23_SRATE, data);
#ifdef DEBUG
{
u32 adc, dac;
@@ -407,9 +349,8 @@ static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
return ret;

- iface_reg =
- tlv320aic23_read_reg_cache(codec,
- TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
+ iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
+
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
@@ -423,7 +364,7 @@ static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
iface_reg |= (0x03 << 2);
break;
}
- tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
+ snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);

return 0;
}
@@ -435,7 +376,7 @@ static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_codec *codec = rtd->codec;

/* set active */
- tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
+ snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001);

return 0;
}
@@ -450,7 +391,7 @@ static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
/* deactivate */
if (!codec->active) {
udelay(50);
- tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
+ snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
aic23->requested_dac = 0;
@@ -463,14 +404,14 @@ static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
struct snd_soc_codec *codec = dai->codec;
u16 reg;

- reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
+ reg = snd_soc_read(codec, TLV320AIC23_DIGT);
if (mute)
reg |= TLV320AIC23_DACM_MUTE;

else
reg &= ~TLV320AIC23_DACM_MUTE;

- tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
+ snd_soc_write(codec, TLV320AIC23_DIGT, reg);

return 0;
}
@@ -481,8 +422,7 @@ static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface_reg;

- iface_reg =
- tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
+ iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03);

/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
@@ -516,7 +456,7 @@ static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,

}

- tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
+ snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);

return 0;
}
@@ -532,26 +472,26 @@ static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
- u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
+ u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0xff7f;

switch (level) {
case SND_SOC_BIAS_ON:
/* vref/mid, osc on, dac unmute */
reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
TLV320AIC23_DAC_OFF);
- tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
+ snd_soc_write(codec, TLV320AIC23_PWR, reg);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
/* everything off except vref/vmid, */
- tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \
- TLV320AIC23_CLK_OFF);
+ snd_soc_write(codec, TLV320AIC23_PWR,
+ reg | TLV320AIC23_CLK_OFF);
break;
case SND_SOC_BIAS_OFF:
/* everything off, dac mute, inactive */
- tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
- tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
+ snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
+ snd_soc_write(codec, TLV320AIC23_PWR, 0xffff);
break;
}
codec->dapm.bias_level = level;
@@ -598,13 +538,7 @@ static int tlv320aic23_suspend(struct snd_soc_codec *codec,

static int tlv320aic23_resume(struct snd_soc_codec *codec)
{
- u16 reg;
-
- /* Sync reg_cache with the hardware */
- for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) {
- u16 val = tlv320aic23_read_reg_cache(codec, reg);
- tlv320aic23_write(codec, reg, val);
- }
+ snd_soc_cache_sync(codec);
tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

return 0;
@@ -613,46 +547,52 @@ static int tlv320aic23_resume(struct snd_soc_codec *codec)
static int tlv320aic23_probe(struct snd_soc_codec *codec)
{
struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
- int reg;
+ int ret;

printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
- codec->control_data = aic23->control_data;
- codec->hw_write = (hw_write_t)i2c_master_send;
- codec->hw_read = NULL;
+
+ ret = snd_soc_codec_set_cache_io(codec, 7, 9, aic23->control_type);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
+ return ret;
+ }

/* Reset codec */
- tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
+ snd_soc_write(codec, TLV320AIC23_RESET, 0);
+
+ /* Write the register default value to cache for reserved registers,
+ * so the write to the these registers are suppressed by the cache
+ * restore code when it skips writes of default registers.
+ */
+ snd_soc_cache_write(codec, 0x0A, 0);
+ snd_soc_cache_write(codec, 0x0B, 0);
+ snd_soc_cache_write(codec, 0x0C, 0);
+ snd_soc_cache_write(codec, 0x0D, 0);
+ snd_soc_cache_write(codec, 0x0E, 0);

/* power on device */
tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

- tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
+ snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);

/* Unmute input */
- reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
- tlv320aic23_write(codec, TLV320AIC23_LINVOL,
- (reg & (~TLV320AIC23_LIM_MUTED)) |
- (TLV320AIC23_LRS_ENABLED));
+ snd_soc_update_bits(codec, TLV320AIC23_LINVOL,
+ TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);

- reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
- tlv320aic23_write(codec, TLV320AIC23_RINVOL,
- (reg & (~TLV320AIC23_LIM_MUTED)) |
- TLV320AIC23_LRS_ENABLED);
+ snd_soc_update_bits(codec, TLV320AIC23_RINVOL,
+ TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);

- reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
- tlv320aic23_write(codec, TLV320AIC23_ANLG,
- (reg) & (~TLV320AIC23_BYPASS_ON) &
- (~TLV320AIC23_MICM_MUTED));
+ snd_soc_update_bits(codec, TLV320AIC23_ANLG,
+ TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED,
+ 0);

/* Default output volume */
- tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
- TLV320AIC23_DEFAULT_OUT_VOL &
- TLV320AIC23_OUT_VOL_MASK);
- tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
- TLV320AIC23_DEFAULT_OUT_VOL &
- TLV320AIC23_OUT_VOL_MASK);
+ snd_soc_write(codec, TLV320AIC23_LCHNVOL,
+ TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
+ snd_soc_write(codec, TLV320AIC23_RCHNVOL,
+ TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);

- tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
+ snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1);

snd_soc_add_controls(codec, tlv320aic23_snd_controls,
ARRAY_SIZE(tlv320aic23_snd_controls));
@@ -674,8 +614,6 @@ static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
.remove = tlv320aic23_remove,
.suspend = tlv320aic23_suspend,
.resume = tlv320aic23_resume,
- .read = tlv320aic23_read_reg_cache,
- .write = tlv320aic23_write,
.set_bias_level = tlv320aic23_set_bias_level,
.dapm_widgets = tlv320aic23_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
@@ -702,7 +640,6 @@ static int tlv320aic23_codec_probe(struct i2c_client *i2c,
return -ENOMEM;

i2c_set_clientdata(i2c, aic23);
- aic23->control_data = i2c;
aic23->control_type = SND_SOC_I2C;

ret = snd_soc_register_codec(&i2c->dev,
--
1.7.4.1



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