#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
+#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
0x00, /* this register not used */
0x00, /* REG_CODEC_MODE (0x1) */
- 0xc3, /* REG_OPTION (0x2) */
+ 0x00, /* REG_OPTION (0x2) */
0x00, /* REG_UNKNOWN (0x3) */
0x00, /* REG_MICBIAS_CTL (0x4) */
- 0x20, /* REG_ANAMICL (0x5) */
+ 0x00, /* REG_ANAMICL (0x5) */
0x00, /* REG_ANAMICR (0x6) */
0x00, /* REG_AVADC_CTL (0x7) */
0x00, /* REG_ADCMICSEL (0x8) */
udelay(10);
}
-static void twl4030_init_chip(struct snd_soc_codec *codec)
+static inline void twl4030_check_defaults(struct snd_soc_codec *codec)
{
- u8 *cache = codec->reg_cache;
- int i;
+ int i, difference = 0;
+ u8 val;
+
+ dev_dbg(codec->dev, "Checking TWL audio default configuration\n");
+ for (i = 1; i <= TWL4030_REG_MISC_SET_2; i++) {
+ twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val, i);
+ if (val != twl4030_reg[i]) {
+ difference++;
+ dev_dbg(codec->dev,
+ "Reg 0x%02x: chip: 0x%02x driver: 0x%02x\n",
+ i, val, twl4030_reg[i]);
+ }
+ }
+ dev_dbg(codec->dev, "Found %d non maching registers. %s\n",
+ difference, difference ? "Not OK" : "OK");
+}
- /* clear CODECPDZ prior to setting register defaults */
- twl4030_codec_enable(codec, 0);
+static inline void twl4030_reset_registers(struct snd_soc_codec *codec)
+{
+ int i;
/* set all audio section registers to reasonable defaults */
for (i = TWL4030_REG_OPTION; i <= TWL4030_REG_MISC_SET_2; i++)
if (i != TWL4030_REG_APLL_CTL)
- twl4030_write(codec, i, cache[i]);
+ twl4030_write(codec, i, twl4030_reg[i]);
}
-static void twl4030_apll_enable(struct snd_soc_codec *codec, int enable)
+static void twl4030_init_chip(struct platform_device *pdev)
{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct twl4030_setup_data *setup = socdev->codec_data;
+ struct snd_soc_codec *codec = socdev->card->codec;
struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
- int status = -1;
+ u8 reg, byte;
+ int i = 0;
- if (enable) {
- twl4030->apll_enabled++;
- if (twl4030->apll_enabled == 1)
- status = twl4030_codec_enable_resource(
- TWL4030_CODEC_RES_APLL);
- } else {
- twl4030->apll_enabled--;
- if (!twl4030->apll_enabled)
- status = twl4030_codec_disable_resource(
- TWL4030_CODEC_RES_APLL);
- }
+ /* Check defaults, if instructed before anything else */
+ if (setup && setup->check_defaults)
+ twl4030_check_defaults(codec);
- if (status >= 0)
- twl4030_write_reg_cache(codec, TWL4030_REG_APLL_CTL, status);
-}
+ /* Reset registers, if no setup data or if instructed to do so */
+ if (!setup || (setup && setup->reset_registers))
+ twl4030_reset_registers(codec);
-static void twl4030_power_up(struct snd_soc_codec *codec)
-{
- struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
- u8 anamicl, regmisc1, byte;
- int i = 0;
+ /* 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);
- if (twl4030->codec_powered)
+ /* anti-pop when changing analog gain */
+ reg = twl4030_read_reg_cache(codec, TWL4030_REG_MISC_SET_1);
+ twl4030_write(codec, TWL4030_REG_MISC_SET_1,
+ reg | TWL4030_SMOOTH_ANAVOL_EN);
+
+ twl4030_write(codec, TWL4030_REG_OPTION,
+ TWL4030_ATXL1_EN | TWL4030_ATXR1_EN |
+ TWL4030_ARXL2_EN | TWL4030_ARXR2_EN);
+
+ /* REG_ARXR2_APGA_CTL reset according to the TRM: 0dB, DA_EN */
+ twl4030_write(codec, TWL4030_REG_ARXR2_APGA_CTL, 0x32);
+
+ /* Machine dependent setup */
+ if (!setup)
return;
- /* set CODECPDZ to turn on codec */
- twl4030_codec_enable(codec, 1);
+ /* Configuration for headset ramp delay from setup data */
+ if (setup->sysclk != twl4030->sysclk)
+ dev_warn(codec->dev,
+ "Mismatch in APLL mclk: %u (configured: %u)\n",
+ setup->sysclk, twl4030->sysclk);
+
+ reg = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
+ reg &= ~TWL4030_RAMP_DELAY;
+ reg |= (setup->ramp_delay_value << 2);
+ twl4030_write_reg_cache(codec, TWL4030_REG_HS_POPN_SET, reg);
/* initiate offset cancellation */
- anamicl = twl4030_read_reg_cache(codec, TWL4030_REG_ANAMICL);
+ twl4030_codec_enable(codec, 1);
+
+ reg = twl4030_read_reg_cache(codec, TWL4030_REG_ANAMICL);
+ reg &= ~TWL4030_OFFSET_CNCL_SEL;
+ reg |= setup->offset_cncl_path;
twl4030_write(codec, TWL4030_REG_ANAMICL,
- anamicl | TWL4030_CNCL_OFFSET_START);
+ reg | TWL4030_CNCL_OFFSET_START);
/* wait for offset cancellation to complete */
do {
/* Make sure that the reg_cache has the same value as the HW */
twl4030_write_reg_cache(codec, TWL4030_REG_ANAMICL, byte);
- /* anti-pop when changing analog gain */
- regmisc1 = twl4030_read_reg_cache(codec, TWL4030_REG_MISC_SET_1);
- twl4030_write(codec, TWL4030_REG_MISC_SET_1,
- regmisc1 | TWL4030_SMOOTH_ANAVOL_EN);
-
- /* toggle CODECPDZ as per TRM */
twl4030_codec_enable(codec, 0);
- twl4030_codec_enable(codec, 1);
}
-/*
- * Unconditional power down
- */
-static void twl4030_power_down(struct snd_soc_codec *codec)
+static void twl4030_apll_enable(struct snd_soc_codec *codec, int enable)
{
- /* power down */
- twl4030_codec_enable(codec, 0);
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
+ int status = -1;
+
+ if (enable) {
+ twl4030->apll_enabled++;
+ if (twl4030->apll_enabled == 1)
+ status = twl4030_codec_enable_resource(
+ TWL4030_CODEC_RES_APLL);
+ } else {
+ twl4030->apll_enabled--;
+ if (!twl4030->apll_enabled)
+ status = twl4030_codec_disable_resource(
+ TWL4030_CODEC_RES_APLL);
+ }
+
+ if (status >= 0)
+ twl4030_write_reg_cache(codec, TWL4030_REG_APLL_CTL, status);
}
/* Earpiece */
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF)
- twl4030_power_up(codec);
+ twl4030_codec_enable(codec, 1);
break;
case SND_SOC_BIAS_OFF:
- twl4030_power_down(codec);
+ twl4030_codec_enable(codec, 0);
break;
}
codec->bias_level = level;
return -EINVAL;
}
- if (mode != old_mode) {
- /* change rate and set CODECPDZ */
- twl4030_codec_enable(codec, 0);
- twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
- twl4030_codec_enable(codec, 1);
- }
-
/* sample size */
old_format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF);
format = old_format;
return -EINVAL;
}
- if (format != old_format) {
-
- /* clear CODECPDZ before changing format (codec requirement) */
- twl4030_codec_enable(codec, 0);
-
- /* change format */
- twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
-
- /* set CODECPDZ afterwards */
- twl4030_codec_enable(codec, 1);
+ if (format != old_format || mode != old_mode) {
+ if (twl4030->codec_powered) {
+ /*
+ * If the codec is powered, than we need to toggle the
+ * codec power.
+ */
+ twl4030_codec_enable(codec, 0);
+ twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
+ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
+ twl4030_codec_enable(codec, 1);
+ } else {
+ twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
+ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
+ }
}
/* Store the important parameters for the DAI configuration and set
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
u8 old_format, format;
/* get format */
}
if (format != old_format) {
-
- /* clear CODECPDZ before changing format (codec requirement) */
- twl4030_codec_enable(codec, 0);
-
- /* change format */
- twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
-
- /* set CODECPDZ afterwards */
- twl4030_codec_enable(codec, 1);
+ if (twl4030->codec_powered) {
+ /*
+ * If the codec is powered, than we need to toggle the
+ * codec power.
+ */
+ twl4030_codec_enable(codec, 0);
+ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
+ twl4030_codec_enable(codec, 1);
+ } else {
+ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
+ }
}
return 0;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->codec;
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
u8 old_mode, mode;
/* Enable voice digital filters */
}
if (mode != old_mode) {
- /* change rate and set CODECPDZ */
- twl4030_codec_enable(codec, 0);
- twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
- twl4030_codec_enable(codec, 1);
+ if (twl4030->codec_powered) {
+ /*
+ * If the codec is powered, than we need to toggle the
+ * codec power.
+ */
+ twl4030_codec_enable(codec, 0);
+ twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
+ twl4030_codec_enable(codec, 1);
+ } else {
+ twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
+ }
}
return 0;
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
+ struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
u8 old_format, format;
/* get format */
}
if (format != old_format) {
- /* change format and set CODECPDZ */
- twl4030_codec_enable(codec, 0);
- twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
- twl4030_codec_enable(codec, 1);
+ if (twl4030->codec_powered) {
+ /*
+ * If the codec is powered, than we need to toggle the
+ * codec power.
+ */
+ twl4030_codec_enable(codec, 0);
+ twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
+ twl4030_codec_enable(codec, 1);
+ } else {
+ twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
+ }
}
return 0;
static int twl4030_soc_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct twl4030_setup_data *setup = socdev->codec_data;
struct snd_soc_codec *codec;
- struct twl4030_priv *twl4030;
int ret;
BUG_ON(!twl4030_codec);
codec = twl4030_codec;
- twl4030 = snd_soc_codec_get_drvdata(codec);
socdev->card->codec = codec;
- /* Configuration for headset ramp delay from setup data */
- if (setup) {
- unsigned char hs_pop;
-
- if (setup->sysclk != twl4030->sysclk)
- dev_warn(&pdev->dev,
- "Mismatch in APLL mclk: %u (configured: %u)\n",
- setup->sysclk, twl4030->sysclk);
-
- hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
- hs_pop &= ~TWL4030_RAMP_DELAY;
- hs_pop |= (setup->ramp_delay_value << 2);
- twl4030_write_reg_cache(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
- }
+ twl4030_init_chip(pdev);
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
+ /* Reset registers to their chip default before leaving */
+ twl4030_reset_registers(codec);
twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
codec->read = twl4030_read_reg_cache;
codec->write = twl4030_write;
codec->set_bias_level = twl4030_set_bias_level;
+ codec->idle_bias_off = 1;
codec->dai = twl4030_dai;
codec->num_dai = ARRAY_SIZE(twl4030_dai);
codec->reg_cache_size = sizeof(twl4030_reg);
/* Set the defaults, and power up the codec */
twl4030->sysclk = twl4030_codec_get_mclk() / 1000;
- twl4030_init_chip(codec);
codec->bias_level = SND_SOC_BIAS_OFF;
- twl4030_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
ret = snd_soc_register_codec(codec);
if (ret != 0) {
return 0;
error_codec:
- twl4030_power_down(codec);
+ twl4030_codec_enable(codec, 0);
kfree(codec->reg_cache);
error_cache:
kfree(twl4030);