[PATCH 08/11] ASoC: twl4030: Remove local reg cache
From: Peter Ujfalusi
Date: Fri Jan 03 2014 - 08:28:54 EST
Depend on the regmap reg cache implementation for register caching done in
the twl-core driver.
The local register cache can be removed and we can keep only shadow copies
of certain ctl registers for pop noise reduction.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
sound/soc/codecs/twl4030.c | 207 ++++++++++++++-------------------------------
1 file changed, 63 insertions(+), 144 deletions(-)
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index f88207712d3d..dda53e8c51e5 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -48,86 +48,6 @@
#define TWL4030_CACHEREGNUM (TWL4030_REG_MISC_SET_2 + 1)
-/*
- * twl4030 register cache & default register settings
- */
-static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
- 0x00, /* this register not used */
- 0x00, /* REG_CODEC_MODE (0x1) */
- 0x00, /* REG_OPTION (0x2) */
- 0x00, /* REG_UNKNOWN (0x3) */
- 0x00, /* REG_MICBIAS_CTL (0x4) */
- 0x00, /* REG_ANAMICL (0x5) */
- 0x00, /* REG_ANAMICR (0x6) */
- 0x00, /* REG_AVADC_CTL (0x7) */
- 0x00, /* REG_ADCMICSEL (0x8) */
- 0x00, /* REG_DIGMIXING (0x9) */
- 0x0f, /* REG_ATXL1PGA (0xA) */
- 0x0f, /* REG_ATXR1PGA (0xB) */
- 0x0f, /* REG_AVTXL2PGA (0xC) */
- 0x0f, /* REG_AVTXR2PGA (0xD) */
- 0x00, /* REG_AUDIO_IF (0xE) */
- 0x00, /* REG_VOICE_IF (0xF) */
- 0x3f, /* REG_ARXR1PGA (0x10) */
- 0x3f, /* REG_ARXL1PGA (0x11) */
- 0x3f, /* REG_ARXR2PGA (0x12) */
- 0x3f, /* REG_ARXL2PGA (0x13) */
- 0x25, /* REG_VRXPGA (0x14) */
- 0x00, /* REG_VSTPGA (0x15) */
- 0x00, /* REG_VRX2ARXPGA (0x16) */
- 0x00, /* REG_AVDAC_CTL (0x17) */
- 0x00, /* REG_ARX2VTXPGA (0x18) */
- 0x32, /* REG_ARXL1_APGA_CTL (0x19) */
- 0x32, /* REG_ARXR1_APGA_CTL (0x1A) */
- 0x32, /* REG_ARXL2_APGA_CTL (0x1B) */
- 0x32, /* REG_ARXR2_APGA_CTL (0x1C) */
- 0x00, /* REG_ATX2ARXPGA (0x1D) */
- 0x00, /* REG_BT_IF (0x1E) */
- 0x55, /* REG_BTPGA (0x1F) */
- 0x00, /* REG_BTSTPGA (0x20) */
- 0x00, /* REG_EAR_CTL (0x21) */
- 0x00, /* REG_HS_SEL (0x22) */
- 0x00, /* REG_HS_GAIN_SET (0x23) */
- 0x00, /* REG_HS_POPN_SET (0x24) */
- 0x00, /* REG_PREDL_CTL (0x25) */
- 0x00, /* REG_PREDR_CTL (0x26) */
- 0x00, /* REG_PRECKL_CTL (0x27) */
- 0x00, /* REG_PRECKR_CTL (0x28) */
- 0x00, /* REG_HFL_CTL (0x29) */
- 0x00, /* REG_HFR_CTL (0x2A) */
- 0x05, /* REG_ALC_CTL (0x2B) */
- 0x00, /* REG_ALC_SET1 (0x2C) */
- 0x00, /* REG_ALC_SET2 (0x2D) */
- 0x00, /* REG_BOOST_CTL (0x2E) */
- 0x00, /* REG_SOFTVOL_CTL (0x2F) */
- 0x13, /* REG_DTMF_FREQSEL (0x30) */
- 0x00, /* REG_DTMF_TONEXT1H (0x31) */
- 0x00, /* REG_DTMF_TONEXT1L (0x32) */
- 0x00, /* REG_DTMF_TONEXT2H (0x33) */
- 0x00, /* REG_DTMF_TONEXT2L (0x34) */
- 0x79, /* REG_DTMF_TONOFF (0x35) */
- 0x11, /* REG_DTMF_WANONOFF (0x36) */
- 0x00, /* REG_I2S_RX_SCRAMBLE_H (0x37) */
- 0x00, /* REG_I2S_RX_SCRAMBLE_M (0x38) */
- 0x00, /* REG_I2S_RX_SCRAMBLE_L (0x39) */
- 0x06, /* REG_APLL_CTL (0x3A) */
- 0x00, /* REG_DTMF_CTL (0x3B) */
- 0x44, /* REG_DTMF_PGA_CTL2 (0x3C) */
- 0x69, /* REG_DTMF_PGA_CTL1 (0x3D) */
- 0x00, /* REG_MISC_SET_1 (0x3E) */
- 0x00, /* REG_PCMBTMUX (0x3F) */
- 0x00, /* not used (0x40) */
- 0x00, /* not used (0x41) */
- 0x00, /* not used (0x42) */
- 0x00, /* REG_RX_PATH_SEL (0x43) */
- 0x32, /* REG_VDL_APGA_CTL (0x44) */
- 0x00, /* REG_VIBRA_CTL (0x45) */
- 0x00, /* REG_VIBRA_SET (0x46) */
- 0x00, /* REG_VIBRA_PWM_SET (0x47) */
- 0x00, /* REG_ANAMIC_GAIN (0x48) */
- 0x00, /* REG_MISC_SET_2 (0x49) */
-};
-
/* codec private data */
struct twl4030_priv {
unsigned int codec_powered;
@@ -166,31 +86,48 @@ static void tw4030_init_ctl_cache(struct twl4030_priv *twl4030)
}
}
-/*
- * read twl4030 register cache
- */
-static inline unsigned int twl4030_read_reg_cache(struct snd_soc_codec *codec,
- unsigned int reg)
+static void twl4030_update_ctl_cache(struct snd_soc_codec *codec,
+ unsigned int reg, unsigned int value)
{
- u8 *cache = codec->reg_cache;
-
- if (reg >= TWL4030_CACHEREGNUM)
- return -EIO;
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
- return cache[reg];
+ switch (reg) {
+ case TWL4030_REG_EAR_CTL:
+ case TWL4030_REG_PREDL_CTL:
+ case TWL4030_REG_PREDR_CTL:
+ case TWL4030_REG_PRECKL_CTL:
+ case TWL4030_REG_PRECKR_CTL:
+ case TWL4030_REG_HS_GAIN_SET:
+ twl4030->ctl_cache[reg - TWL4030_REG_EAR_CTL] = value;
+ break;
+ default:
+ break;
+ }
}
-/*
- * write twl4030 register cache
- */
-static inline void twl4030_write_reg_cache(struct snd_soc_codec *codec,
- u8 reg, u8 value)
+static unsigned int twl4030_read(struct snd_soc_codec *codec, unsigned int reg)
{
- u8 *cache = codec->reg_cache;
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
+ u8 value = 0;
if (reg >= TWL4030_CACHEREGNUM)
- return;
- cache[reg] = value;
+ return -EIO;
+
+ switch (reg) {
+ case TWL4030_REG_EAR_CTL:
+ case TWL4030_REG_PREDL_CTL:
+ case TWL4030_REG_PREDR_CTL:
+ case TWL4030_REG_PRECKL_CTL:
+ case TWL4030_REG_PRECKR_CTL:
+ case TWL4030_REG_HS_GAIN_SET:
+ value = twl4030->ctl_cache[reg - TWL4030_REG_EAR_CTL];
+ break;
+ default:
+ twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &value, reg);
+ break;
+ }
+
+ return value;
}
static bool twl4030_can_write_to_chip(struct snd_soc_codec *codec,
@@ -234,13 +171,10 @@ static bool twl4030_can_write_to_chip(struct snd_soc_codec *codec,
return write_to_reg;
}
-/*
- * write to the twl4030 register space
- */
static int twl4030_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
- twl4030_write_reg_cache(codec, reg, value);
+ twl4030_update_ctl_cache(codec, reg, value);
if (twl4030_can_write_to_chip(codec, reg))
return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
@@ -270,10 +204,8 @@ static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable)
else
mode = twl4030_audio_disable_resource(TWL4030_AUDIO_RES_POWER);
- if (mode >= 0) {
- twl4030_write_reg_cache(codec, TWL4030_REG_CODEC_MODE, mode);
+ if (mode >= 0)
twl4030->codec_powered = enable;
- }
/* REVISIT: this delay is present in TI sample drivers */
/* but there seems to be no TRM requirement for it */
@@ -363,13 +295,8 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
/* Initialize the local ctl register cache */
tw4030_init_ctl_cache(twl4030);
- /* Refresh APLL_CTL register from HW */
- twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte,
- TWL4030_REG_APLL_CTL);
- twl4030_write_reg_cache(codec, TWL4030_REG_APLL_CTL, byte);
-
/* anti-pop when changing analog gain */
- reg = twl4030_read_reg_cache(codec, TWL4030_REG_MISC_SET_1);
+ reg = twl4030_read(codec, TWL4030_REG_MISC_SET_1);
twl4030_write(codec, TWL4030_REG_MISC_SET_1,
reg | TWL4030_SMOOTH_ANAVOL_EN);
@@ -386,15 +313,15 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
twl4030->pdata = pdata;
- reg = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
+ reg = twl4030_read(codec, TWL4030_REG_HS_POPN_SET);
reg &= ~TWL4030_RAMP_DELAY;
reg |= (pdata->ramp_delay_value << 2);
- twl4030_write_reg_cache(codec, TWL4030_REG_HS_POPN_SET, reg);
+ twl4030_write(codec, TWL4030_REG_HS_POPN_SET, reg);
/* initiate offset cancellation */
twl4030_codec_enable(codec, 1);
- reg = twl4030_read_reg_cache(codec, TWL4030_REG_ANAMICL);
+ reg = twl4030_read(codec, TWL4030_REG_ANAMICL);
reg &= ~TWL4030_OFFSET_CNCL_SEL;
reg |= pdata->offset_cncl_path;
twl4030_write(codec, TWL4030_REG_ANAMICL,
@@ -408,15 +335,14 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
msleep(20);
do {
usleep_range(1000, 2000);
+ twl_set_regcache_bypass(TWL4030_MODULE_AUDIO_VOICE, true);
twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte,
TWL4030_REG_ANAMICL);
+ twl_set_regcache_bypass(TWL4030_MODULE_AUDIO_VOICE, false);
} while ((i++ < 100) &&
((byte & TWL4030_CNCL_OFFSET_START) ==
TWL4030_CNCL_OFFSET_START));
- /* Make sure that the reg_cache has the same value as the HW */
- twl4030_write_reg_cache(codec, TWL4030_REG_ANAMICL, byte);
-
twl4030_codec_enable(codec, 0);
}
@@ -436,9 +362,6 @@ static void twl4030_apll_enable(struct snd_soc_codec *codec, int enable)
status = twl4030_audio_disable_resource(
TWL4030_AUDIO_RES_APLL);
}
-
- if (status >= 0)
- twl4030_write_reg_cache(codec, TWL4030_REG_APLL_CTL, status);
}
/* Earpiece */
@@ -661,8 +584,7 @@ static int pin_name##pga_event(struct snd_soc_dapm_widget *w, \
switch (event) { \
case SND_SOC_DAPM_POST_PMU: \
twl4030->pin_name##_enabled = 1; \
- twl4030_write(w->codec, reg, \
- twl4030_read_reg_cache(w->codec, reg)); \
+ twl4030_write(w->codec, reg, twl4030_read(w->codec, reg)); \
break; \
case SND_SOC_DAPM_POST_PMD: \
twl4030->pin_name##_enabled = 0; \
@@ -683,7 +605,7 @@ static void handsfree_ramp(struct snd_soc_codec *codec, int reg, int ramp)
{
unsigned char hs_ctl;
- hs_ctl = twl4030_read_reg_cache(codec, reg);
+ hs_ctl = twl4030_read(codec, reg);
if (ramp) {
/* HF ramp-up */
@@ -763,7 +685,7 @@ static int aif_event(struct snd_soc_dapm_widget *w,
{
u8 audio_if;
- audio_if = twl4030_read_reg_cache(w->codec, TWL4030_REG_AUDIO_IF);
+ audio_if = twl4030_read(w->codec, TWL4030_REG_AUDIO_IF);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Enable AIF */
@@ -793,8 +715,8 @@ static void headset_ramp(struct snd_soc_codec *codec, int ramp)
8388608, 16777216, 33554432, 67108864};
unsigned int delay;
- hs_gain = twl4030_read_reg_cache(codec, TWL4030_REG_HS_GAIN_SET);
- hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
+ hs_gain = twl4030_read(codec, TWL4030_REG_HS_GAIN_SET);
+ hs_pop = twl4030_read(codec, TWL4030_REG_HS_POPN_SET);
delay = (ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
twl4030->sysclk) + 1;
@@ -1738,7 +1660,7 @@ static void twl4030_tdm_enable(struct snd_soc_codec *codec, int direction,
{
u8 reg, mask;
- reg = twl4030_read_reg_cache(codec, TWL4030_REG_OPTION);
+ reg = twl4030_read(codec, TWL4030_REG_OPTION);
if (direction == SNDRV_PCM_STREAM_PLAYBACK)
mask = TWL4030_ARXL1_VRX_EN | TWL4030_ARXR1_EN;
@@ -1767,7 +1689,7 @@ static int twl4030_startup(struct snd_pcm_substream *substream,
if (twl4030->configured)
twl4030_constraints(twl4030, twl4030->master_substream);
} else {
- if (!(twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE) &
+ if (!(twl4030_read(codec, TWL4030_REG_CODEC_MODE) &
TWL4030_OPTION_1)) {
/* In option2 4 channel is not supported, set the
* constraint for the first stream for channels, the
@@ -1815,8 +1737,8 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream,
/* If the substream has 4 channel, do the necessary setup */
if (params_channels(params) == 4) {
- format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
- mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE);
+ format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
+ mode = twl4030_read(codec, TWL4030_REG_CODEC_MODE);
/* Safety check: are we in the correct operating mode and
* the interface is in TDM mode? */
@@ -1832,8 +1754,8 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream,
return 0;
/* bit rate */
- old_mode = twl4030_read_reg_cache(codec,
- TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ;
+ old_mode = twl4030_read(codec,
+ TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ;
mode = old_mode & ~TWL4030_APLL_RATE;
switch (params_rate(params)) {
@@ -1874,7 +1796,7 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream,
}
/* sample size */
- old_format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
+ old_format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
format = old_format;
format &= ~TWL4030_DATA_WIDTH;
switch (params_format(params)) {
@@ -1957,7 +1879,7 @@ static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai,
u8 old_format, format;
/* get format */
- old_format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
+ old_format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
format = old_format;
/* set master/slave audio interface */
@@ -2007,7 +1929,7 @@ static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai,
static int twl4030_set_tristate(struct snd_soc_dai *dai, int tristate)
{
struct snd_soc_codec *codec = dai->codec;
- u8 reg = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
+ u8 reg = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
if (tristate)
reg |= TWL4030_AIF_TRI_EN;
@@ -2024,7 +1946,7 @@ static void twl4030_voice_enable(struct snd_soc_codec *codec, int direction,
{
u8 reg, mask;
- reg = twl4030_read_reg_cache(codec, TWL4030_REG_OPTION);
+ reg = twl4030_read(codec, TWL4030_REG_OPTION);
if (direction == SNDRV_PCM_STREAM_PLAYBACK)
mask = TWL4030_ARXL1_VRX_EN;
@@ -2059,7 +1981,7 @@ static int twl4030_voice_startup(struct snd_pcm_substream *substream,
/* If the codec mode is not option2, the voice PCM interface is not
* available.
*/
- mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE)
+ mode = twl4030_read(codec, TWL4030_REG_CODEC_MODE)
& TWL4030_OPT_MODE;
if (mode != TWL4030_OPTION_2) {
@@ -2091,7 +2013,7 @@ static int twl4030_voice_hw_params(struct snd_pcm_substream *substream,
twl4030_voice_enable(codec, substream->stream, 1);
/* bit rate */
- old_mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE)
+ old_mode = twl4030_read(codec, TWL4030_REG_CODEC_MODE)
& ~(TWL4030_CODECPDZ);
mode = old_mode;
@@ -2154,7 +2076,7 @@ static int twl4030_voice_set_dai_fmt(struct snd_soc_dai *codec_dai,
u8 old_format, format;
/* get format */
- old_format = twl4030_read_reg_cache(codec, TWL4030_REG_VOICE_IF);
+ old_format = twl4030_read(codec, TWL4030_REG_VOICE_IF);
format = old_format;
/* set master/slave audio interface */
@@ -2201,7 +2123,7 @@ static int twl4030_voice_set_dai_fmt(struct snd_soc_dai *codec_dai,
static int twl4030_voice_set_tristate(struct snd_soc_dai *dai, int tristate)
{
struct snd_soc_codec *codec = dai->codec;
- u8 reg = twl4030_read_reg_cache(codec, TWL4030_REG_VOICE_IF);
+ u8 reg = twl4030_read(codec, TWL4030_REG_VOICE_IF);
if (tristate)
reg |= TWL4030_VIF_TRI_EN;
@@ -2304,13 +2226,10 @@ static int twl4030_soc_remove(struct snd_soc_codec *codec)
static struct snd_soc_codec_driver soc_codec_dev_twl4030 = {
.probe = twl4030_soc_probe,
.remove = twl4030_soc_remove,
- .read = twl4030_read_reg_cache,
+ .read = twl4030_read,
.write = twl4030_write,
.set_bias_level = twl4030_set_bias_level,
.idle_bias_off = true,
- .reg_cache_size = sizeof(twl4030_reg),
- .reg_word_size = sizeof(u8),
- .reg_cache_default = twl4030_reg,
.controls = twl4030_snd_controls,
.num_controls = ARRAY_SIZE(twl4030_snd_controls),
--
1.8.5.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/