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wm8994_samsung.c
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wm8994_samsung.c
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/*
* wm8994_samsung.c -- WM8994 ALSA Soc Audio driver
*
* Copyright 2010 Wolfson Microelectronics PLC.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Notes:
* The WM8994 is a multichannel codec with S/PDIF support, featuring six
* DAC channels and two ADC channels.
*
* Currently only the primary audio interface is supported - S/PDIF and
* the secondary audio interfaces are not.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <asm/div64.h>
#include <linux/io.h>
#include <plat/map-base.h>
#include <linux/gpio.h>
#include <plat/gpio-cfg.h>
#include <mach/regs-clock.h>
#include "wm8994_samsung.h"
#define WM8994_VERSION "0.1"
#define SUBJECT "wm8994_samsung.c"
#if defined(CONFIG_VIDEO_TV20) && defined(CONFIG_SND_S5P_WM8994_MASTER)
#define HDMI_USE_AUDIO
#endif
/*
*Definitions of clock related.
*/
static struct {
int ratio;
int clk_sys_rate;
} clk_sys_rates[] = {
{ 64, 0 },
{ 128, 1 },
{ 192, 2 },
{ 256, 3 },
{ 384, 4 },
{ 512, 5 },
{ 768, 6 },
{ 1024, 7 },
{ 1408, 8 },
{ 1536, 9 },
};
static struct {
int rate;
int sample_rate;
} sample_rates[] = {
{ 8000, 0 },
{ 11025, 1 },
{ 12000, 2 },
{ 16000, 3 },
{ 22050, 4 },
{ 24000, 5 },
{ 32000, 6 },
{ 44100, 7 },
{ 48000, 8 },
{ 88200, 9 },
{ 96000, 10 },
};
static struct {
int div;
int bclk_div;
} bclk_divs[] = {
{ 1, 0 },
{ 2, 1 },
{ 4, 2 },
{ 6, 3 },
{ 8, 4 },
{ 12, 5 },
{ 16, 6 },
{ 24, 7 },
{ 32, 8 },
{ 48, 9 },
};
struct snd_soc_dai wm8994_dai;
EXPORT_SYMBOL_GPL(wm8994_dai);
struct snd_soc_codec_device soc_codec_dev_pcm_wm8994;
EXPORT_SYMBOL_GPL(soc_codec_dev_pcm_wm8994);
struct snd_soc_codec_device soc_codec_dev_wm8994;
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8994);
/*
* Definitions of sound path
*/
select_route universal_wm8994_playback_paths[] = {
wm8994_disable_path, wm8994_set_playback_receiver,
wm8994_set_playback_speaker, wm8994_set_playback_headset,
wm8994_set_playback_headset, wm8994_set_playback_bluetooth,
wm8994_set_playback_speaker_headset
};
select_route universal_wm8994_voicecall_paths[] = {
wm8994_disable_path, wm8994_set_voicecall_receiver,
wm8994_set_voicecall_speaker, wm8994_set_voicecall_headset,
wm8994_set_voicecall_headphone, wm8994_set_voicecall_bluetooth
};
select_mic_route universal_wm8994_mic_paths[] = {
wm8994_record_main_mic,
wm8994_record_headset_mic,
wm8994_record_bluetooth,
};
select_clock_control universal_clock_controls = wm8994_configure_clock;
int gain_code;
/*
* Implementation of I2C functions
*/
static unsigned int wm8994_read_hw(struct snd_soc_codec *codec, u16 reg)
{
struct i2c_msg xfer[2];
u16 data;
int ret;
struct i2c_client *i2c = codec->control_data;
data = ((reg & 0xff00) >> 8) | ((reg & 0xff) << 8);
xfer[0].addr = i2c->addr;
xfer[0].flags = 0;
xfer[0].len = 2;
xfer[0].buf = (void *)&data;
xfer[1].addr = i2c->addr;
xfer[1].flags = I2C_M_RD;
xfer[1].len = 2;
xfer[1].buf = (u8 *)&data;
ret = i2c_transfer(i2c->adapter, xfer, 2);
if (ret != 2) {
dev_err(codec->dev, "Failed to read 0x%x: %d\n", reg, ret);
return 0;
}
return (data >> 8) | ((data & 0xff) << 8);
}
int wm8994_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u8 data[4];
int ret;
/* data is
* D15..D9 WM8993 register offset
* D8...D0 register data
*/
data[0] = (reg & 0xff00) >> 8;
data[1] = reg & 0x00ff;
data[2] = value >> 8;
data[3] = value & 0x00ff;
ret = codec->hw_write(codec->control_data, data, 4);
if (ret == 4)
return 0;
else {
pr_err("i2c write problem occured\n");
return ret;
}
}
unsigned int wm8994_read(struct snd_soc_codec *codec, unsigned int reg)
{
return wm8994_read_hw(codec, reg);
}
static int wm8994_ldo_control(struct wm8994_platform_data *pdata, int en)
{
if (!pdata) {
pr_err("failed to control wm8994 ldo\n");
return -EINVAL;
}
gpio_set_value(pdata->ldo, en);
if (en)
msleep(10);
else
msleep(125);
return 0;
}
/*
* Functions related volume.
*/
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
static int wm899x_outpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int ret;
u16 val;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int reg = mc->reg;
struct wm8994_priv *wm8994 = codec->drvdata;
DEBUG_LOG("");
ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
if (ret < 0)
return ret;
/* Volume changes in the headphone path mean we need to
* recallibrate DC servo */
if (strcmp(kcontrol->id.name, "Playback Spkr Volume") == 0 ||
strcmp(kcontrol->id.name, "Playback Volume") == 0)
memset(wm8994->dc_servo, 0, sizeof(wm8994->dc_servo));
val = wm8994_read(codec, reg);
return wm8994_write(codec, reg, val | 0x0100);
}
static int wm899x_inpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int reg = mc->reg;
int ret;
u16 val;
ret = snd_soc_put_volsw(kcontrol, ucontrol);
if (ret < 0)
return ret;
val = wm8994_read(codec, reg);
return wm8994_write(codec, reg, val | 0x0100);
}
/*
* Implementation of sound path
*/
#define MAX_PLAYBACK_PATHS 10
#define MAX_VOICECALL_PATH 5
static const char *playback_path[] = {
"OFF", "RCV", "SPK", "HP", "HP_NO_MIC", "BT", "SPK_HP",
"RING_SPK", "RING_HP", "RING_NO_MIC", "RING_SPK_HP"
};
static const char *voicecall_path[] = { "OFF", "RCV", "SPK", "HP",
"HP_NO_MIC", "BT" };
static const char *mic_path[] = { "Main Mic", "Hands Free Mic",
"BT Sco Mic", "MIC OFF" };
static const char *input_source_state[] = { "Default", "Voice Recognition",
"Camcorder" };
static int wm8994_get_mic_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
ucontrol->value.integer.value[0] = wm8994->rec_path;
return 0;
}
static int wm8994_set_mic_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
DEBUG_LOG("");
wm8994->codec_state |= CAPTURE_ACTIVE;
switch (ucontrol->value.integer.value[0]) {
case 0:
wm8994->rec_path = MAIN;
break;
case 1:
wm8994->rec_path = SUB;
break;
case 2:
wm8994->rec_path = BT_REC;
break;
case 3:
wm8994_disable_rec_path(codec);
return 0;
default:
return -EINVAL;
}
wm8994->universal_mic_path[wm8994->rec_path] (codec);
return 0;
}
static int wm8994_get_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
ucontrol->value.integer.value[0] = wm8994->cur_path;
return 0;
}
static int wm8994_set_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
struct soc_enum *mc = (struct soc_enum *)kcontrol->private_value;
int val;
int path_num = ucontrol->value.integer.value[0];
if (strcmp(mc->texts[path_num], playback_path[path_num])) {
DEBUG_LOG_ERR("Unknown path %s\n", mc->texts[path_num]);
return -ENODEV;
}
if (path_num > MAX_PLAYBACK_PATHS) {
DEBUG_LOG_ERR("Unknown Path\n");
return -ENODEV;
}
switch (path_num) {
case OFF:
DEBUG_LOG("Switching off output path\n");
break;
case RCV:
case SPK:
case HP:
case HP_NO_MIC:
case BT:
case SPK_HP:
DEBUG_LOG("routing to %s\n", mc->texts[path_num]);
wm8994->ringtone_active = RING_OFF;
break;
case RING_SPK:
case RING_HP:
case RING_NO_MIC:
DEBUG_LOG("routing to %s\n", mc->texts[path_num]);
wm8994->ringtone_active = RING_ON;
path_num -= 5;
break;
case RING_SPK_HP:
DEBUG_LOG("routing to %s\n", mc->texts[path_num]);
wm8994->ringtone_active = RING_ON;
path_num -= 4;
break;
default:
DEBUG_LOG_ERR("audio path[%d] does not exists!!\n", path_num);
return -ENODEV;
break;
}
wm8994->codec_state |= PLAYBACK_ACTIVE;
if (wm8994->codec_state & CALL_ACTIVE) {
wm8994->codec_state &= ~(CALL_ACTIVE);
val = wm8994_read(codec, WM8994_CLOCKING_1);
val &= ~(WM8994_DSP_FS2CLK_ENA_MASK | WM8994_SYSCLK_SRC_MASK);
wm8994_write(codec, WM8994_CLOCKING_1, val);
}
wm8994->cur_path = path_num;
wm8994->universal_playback_path[wm8994->cur_path] (codec);
return 0;
}
static int wm8994_get_voice_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
ucontrol->value.integer.value[0] = wm8994->cur_path;
return 0;
}
static int wm8994_set_voice_path(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
struct soc_enum *mc = (struct soc_enum *)kcontrol->private_value;
int path_num = ucontrol->value.integer.value[0];
if (strcmp(mc->texts[path_num], voicecall_path[path_num])) {
DEBUG_LOG_ERR("Unknown path %s\n", mc->texts[path_num]);
return -ENODEV;
}
switch (path_num) {
case OFF:
DEBUG_LOG("Switching off output path\n");
break;
case RCV:
case SPK:
case HP:
case HP_NO_MIC:
case BT:
DEBUG_LOG("routing voice path to %s\n", mc->texts[path_num]);
break;
default:
DEBUG_LOG_ERR("path[%d] does not exists!\n", path_num);
return -ENODEV;
break;
}
if (wm8994->cur_path != path_num ||
!(wm8994->codec_state & CALL_ACTIVE)) {
wm8994->codec_state |= CALL_ACTIVE;
wm8994->cur_path = path_num;
wm8994->universal_voicecall_path[wm8994->cur_path] (codec);
} else {
int val;
val = wm8994_read(codec, WM8994_AIF1_DAC1_FILTERS_1);
val &= ~(WM8994_AIF1DAC1_MUTE_MASK);
val |= (WM8994_AIF1DAC1_UNMUTE);
wm8994_write(codec, WM8994_AIF1_DAC1_FILTERS_1, val);
}
return 0;
}
static int wm8994_get_input_source(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
DEBUG_LOG("input_source_state = [%d]", wm8994->input_source);
return wm8994->input_source;
}
static int wm8994_set_input_source(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = codec->drvdata;
int control_flag = ucontrol->value.integer.value[0];
DEBUG_LOG("Changed input_source state [%d] => [%d]",
wm8994->input_source, control_flag);
wm8994->input_source = control_flag;
return 0;
}
#define SOC_WM899X_OUTPGA_DOUBLE_R_TLV(xname, reg_left, reg_right,\
xshift, xmax, xinvert, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
SNDRV_CTL_ELEM_ACCESS_READWRITE,\
.tlv.p = (tlv_array), \
.info = snd_soc_info_volsw_2r, \
.get = snd_soc_get_volsw_2r, .put = wm899x_outpga_put_volsw_vu, \
.private_value = (unsigned long)&(struct soc_mixer_control) \
{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
.max = xmax, .invert = xinvert} }
#define SOC_WM899X_OUTPGA_SINGLE_R_TLV(xname, reg, shift, max, invert,\
tlv_array) {\
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
SNDRV_CTL_ELEM_ACCESS_READWRITE,\
.tlv.p = (tlv_array), \
.info = snd_soc_info_volsw, \
.get = snd_soc_get_volsw, .put = wm899x_inpga_put_volsw_vu, \
.private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7162, 37, 1);
static const DECLARE_TLV_DB_LINEAR(digital_tlv_spkr, -5700, 600);
static const DECLARE_TLV_DB_LINEAR(digital_tlv_rcv, -5700, 600);
static const DECLARE_TLV_DB_LINEAR(digital_tlv_headphone, -5700, 600);
static const DECLARE_TLV_DB_LINEAR(digital_tlv_mic, -7162, 7162);
static const struct soc_enum path_control_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(playback_path), playback_path),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(voicecall_path), voicecall_path),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mic_path), mic_path),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_source_state), input_source_state),
};
static const struct snd_kcontrol_new wm8994_snd_controls[] = {
SOC_WM899X_OUTPGA_DOUBLE_R_TLV("Playback Volume",
WM8994_LEFT_OPGA_VOLUME,
WM8994_RIGHT_OPGA_VOLUME, 0, 0x3F, 0,
digital_tlv_rcv),
SOC_WM899X_OUTPGA_DOUBLE_R_TLV("Playback Spkr Volume",
WM8994_SPEAKER_VOLUME_LEFT,
WM8994_SPEAKER_VOLUME_RIGHT, 1, 0x3F, 0,
digital_tlv_spkr),
SOC_WM899X_OUTPGA_DOUBLE_R_TLV("Playback Headset Volume",
WM8994_LEFT_OUTPUT_VOLUME,
WM8994_RIGHT_OUTPUT_VOLUME, 1, 0x3F, 0,
digital_tlv_headphone),
SOC_WM899X_OUTPGA_SINGLE_R_TLV("Capture Volume",
WM8994_AIF1_ADC1_LEFT_VOLUME,
0, 0xEF, 0, digital_tlv_mic),
/* Path Control */
SOC_ENUM_EXT("Playback Path", path_control_enum[0],
wm8994_get_path, wm8994_set_path),
SOC_ENUM_EXT("Voice Call Path", path_control_enum[1],
wm8994_get_voice_path, wm8994_set_voice_path),
SOC_ENUM_EXT("Capture MIC Path", path_control_enum[2],
wm8994_get_mic_path, wm8994_set_mic_path),
#if defined USE_INFINIEON_EC_FOR_VT
SOC_ENUM_EXT("Clock Control", clock_control_enum[0],
s3c_pcmdev_get_clock, s3c_pcmdev_set_clock),
#endif
SOC_ENUM_EXT("Input Source", path_control_enum[3],
wm8994_get_input_source, wm8994_set_input_source),
};
/* Add non-DAPM controls */
static int wm8994_add_controls(struct snd_soc_codec *codec)
{
int err, i;
for (i = 0; i < ARRAY_SIZE(wm8994_snd_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&wm8994_snd_controls[i],
codec, NULL));
if (err < 0)
return err;
}
return 0;
}
static const struct snd_soc_dapm_widget wm8994_dapm_widgets[] = {
};
static const struct snd_soc_dapm_route audio_map[] = {
};
static int wm8994_add_widgets(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, wm8994_dapm_widgets,
ARRAY_SIZE(wm8994_dapm_widgets));
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
snd_soc_dapm_new_widgets(codec);
return 0;
}
static int configure_clock(struct snd_soc_codec *codec)
{
struct wm8994_priv *wm8994 = codec->drvdata;
unsigned int reg;
DEBUG_LOG("");
if (wm8994->codec_state != DEACTIVE) {
DEBUG_LOG("Codec is already actvied. Skip clock setting.");
return 0;
}
reg = wm8994_read(codec, WM8994_AIF1_CLOCKING_1);
reg &= ~WM8994_AIF1CLK_ENA;
reg &= ~WM8994_AIF1CLK_SRC_MASK;
wm8994_write(codec, WM8994_AIF1_CLOCKING_1, reg);
switch (wm8994->sysclk_source) {
case WM8994_SYSCLK_MCLK:
dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8994->mclk_rate);
reg = wm8994_read(codec, WM8994_AIF1_CLOCKING_1);
reg &= ~WM8994_AIF1CLK_ENA;
wm8994_write(codec, WM8994_AIF1_CLOCKING_1, reg);
reg = wm8994_read(codec, WM8994_AIF1_CLOCKING_1);
reg &= 0x07;
if (wm8994->mclk_rate > 13500000) {
reg |= WM8994_AIF1CLK_DIV;
wm8994->sysclk_rate = wm8994->mclk_rate / 2;
} else {
reg &= ~WM8994_AIF1CLK_DIV;
wm8994->sysclk_rate = wm8994->mclk_rate;
}
reg |= WM8994_AIF1CLK_ENA;
wm8994_write(codec, WM8994_AIF1_CLOCKING_1, reg);
/* Enable clocks to the Audio core and sysclk of wm8994 */
reg = wm8994_read(codec, WM8994_CLOCKING_1);
reg &= ~(WM8994_SYSCLK_SRC_MASK | WM8994_DSP_FSINTCLK_ENA_MASK
| WM8994_DSP_FS1CLK_ENA_MASK);
reg |= (WM8994_DSP_FS1CLK_ENA | WM8994_DSP_FSINTCLK_ENA);
wm8994_write(codec, WM8994_CLOCKING_1, reg);
break;
case WM8994_SYSCLK_FLL:
switch (wm8994->fs) {
case 8000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x2F00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x3126);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 11025:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x1F00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x86C2);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x00e0);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 12000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x1F00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x3126);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 16000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x1900);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0xE23E);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 22050:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x0F00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x86C2);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x00E0);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 24000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x0F00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x3126);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 32000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x0C00);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0xE23E);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 44100:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x0700);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x86C2);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x00E0);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
case 48000:
wm8994_write(codec, WM8994_FLL1_CONTROL_2, 0x0700);
wm8994_write(codec, WM8994_FLL1_CONTROL_3, 0x3126);
wm8994_write(codec, WM8994_FLL1_CONTROL_5, 0x0C88);
wm8994_write(codec, WM8994_FLL1_CONTROL_4, 0x0100);
wm8994_write(codec, WM8994_FLL1_CONTROL_1,
WM8994_FLL1_FRACN_ENA | WM8994_FLL1_ENA);
break;
default:
DEBUG_LOG_ERR("Unsupported Frequency\n");
break;
}
reg = wm8994_read(codec, WM8994_AIF1_CLOCKING_1);
reg |= WM8994_AIF1CLK_ENA;
reg |= WM8994_AIF1CLK_SRC_FLL1;
wm8994_write(codec, WM8994_AIF1_CLOCKING_1, reg);
/* Enable clocks to the Audio core and sysclk of wm8994*/
reg = wm8994_read(codec, WM8994_CLOCKING_1);
reg &= ~(WM8994_SYSCLK_SRC_MASK | WM8994_DSP_FSINTCLK_ENA_MASK |
WM8994_DSP_FS1CLK_ENA_MASK);
reg |= (WM8994_DSP_FS1CLK_ENA | WM8994_DSP_FSINTCLK_ENA);
wm8994_write(codec, WM8994_CLOCKING_1, reg);
break;
default:
dev_err(codec->dev, "System clock not configured\n");
return -EINVAL;
}
dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8994->sysclk_rate);
return 0;
}
static int wm8994_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
DEBUG_LOG("");
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
/* VMID=2*40k */
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
WM8994_VMID_SEL_MASK, 0x2);
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_2,
WM8994_TSHUT_ENA, WM8994_TSHUT_ENA);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
/* Bring up VMID with fast soft start */
snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
WM8994_STARTUP_BIAS_ENA |
WM8994_VMID_BUF_ENA |
WM8994_VMID_RAMP_MASK |
WM8994_BIAS_SRC,
WM8994_STARTUP_BIAS_ENA |
WM8994_VMID_BUF_ENA |
WM8994_VMID_RAMP_MASK |
WM8994_BIAS_SRC);
/* VMID=2*40k */
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
WM8994_VMID_SEL_MASK |
WM8994_BIAS_ENA,
WM8994_BIAS_ENA | 0x2);
/* Switch to normal bias */
snd_soc_update_bits(codec, WM8994_ANTIPOP_2,
WM8994_BIAS_SRC |
WM8994_STARTUP_BIAS_ENA, 0);
}
/* VMID=2*240k */
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
WM8994_VMID_SEL_MASK, 0x4);
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_2,
WM8994_TSHUT_ENA, 0);
break;
case SND_SOC_BIAS_OFF:
snd_soc_update_bits(codec, WM8994_ANTIPOP_1,
WM8994_LINEOUT_VMID_BUF_ENA, 0);
snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_1,
WM8994_VMID_SEL_MASK | WM8994_BIAS_ENA, 0);
break;
}
codec->bias_level = level;
return 0;
}
static int wm8994_set_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct wm8994_priv *wm8994 = codec->drvdata;
DEBUG_LOG("clk_id =%d ", clk_id);
switch (clk_id) {
case WM8994_SYSCLK_MCLK:
wm8994->mclk_rate = freq;
wm8994->sysclk_source = clk_id;
break;
case WM8994_SYSCLK_FLL:
wm8994->sysclk_rate = freq;
wm8994->sysclk_source = clk_id;
break;
default:
return -EINVAL;
}
return 0;
}
static int wm8994_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8994_priv *wm8994 = codec->drvdata;
unsigned int aif1 = wm8994_read(codec, WM8994_AIF1_CONTROL_1);
unsigned int aif2 = wm8994_read(codec, WM8994_AIF1_MASTER_SLAVE);
DEBUG_LOG("");
aif1 &= ~(WM8994_AIF1_LRCLK_INV | WM8994_AIF1_BCLK_INV |
WM8994_AIF1_WL_MASK | WM8994_AIF1_FMT_MASK);
aif2 &= ~(WM8994_AIF1_LRCLK_FRC_MASK |
WM8994_AIF1_CLK_FRC | WM8994_AIF1_MSTR);
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
wm8994->master = 0;
break;
case SND_SOC_DAIFMT_CBS_CFM:
aif2 |= (WM8994_AIF1_MSTR | WM8994_AIF1_LRCLK_FRC);
wm8994->master = 1;
break;
case SND_SOC_DAIFMT_CBM_CFS:
aif2 |= (WM8994_AIF1_MSTR | WM8994_AIF1_CLK_FRC);
wm8994->master = 1;
break;
case SND_SOC_DAIFMT_CBM_CFM:
aif2 |= (WM8994_AIF1_MSTR | WM8994_AIF1_CLK_FRC |
WM8994_AIF1_LRCLK_FRC);
wm8994->master = 1;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_B:
aif1 |= WM8994_AIF1_LRCLK_INV;
case SND_SOC_DAIFMT_DSP_A:
aif1 |= 0x18;
break;
case SND_SOC_DAIFMT_I2S:
aif1 |= 0x10;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
aif1 |= 0x8;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8994_AIF1_BCLK_INV;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
aif1 |= WM8994_AIF1_BCLK_INV | WM8994_AIF1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8994_AIF1_BCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif1 |= WM8994_AIF1_LRCLK_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
aif1 |= 0x4000;
wm8994_write(codec, WM8994_AIF1_CONTROL_1, aif1);
wm8994_write(codec, WM8994_AIF1_MASTER_SLAVE, aif2);
wm8994_write(codec, WM8994_AIF1_CONTROL_2, 0x4000);
return 0;
}
static int wm8994_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8994_priv *wm8994 = codec->drvdata;
int ret, i, best, best_val, cur_val;
unsigned int clocking1, clocking3, aif1, aif4, aif5;
DEBUG_LOG("");
clocking1 = wm8994_read(codec, WM8994_AIF1_BCLK);
clocking1 &= ~WM8994_AIF1_BCLK_DIV_MASK;
clocking3 = wm8994_read(codec, WM8994_AIF1_RATE);
clocking3 &= ~(WM8994_AIF1_SR_MASK | WM8994_AIF1CLK_RATE_MASK);
aif1 = wm8994_read(codec, WM8994_AIF1_CONTROL_1);
aif1 &= ~WM8994_AIF1_WL_MASK;
aif4 = wm8994_read(codec, WM8994_AIF1ADC_LRCLK);
aif4 &= ~WM8994_AIF1ADC_LRCLK_DIR;
aif5 = wm8994_read(codec, WM8994_AIF1DAC_LRCLK);
aif5 &= ~WM8994_AIF1DAC_LRCLK_DIR_MASK;
wm8994->fs = params_rate(params);
wm8994->bclk = 2 * wm8994->fs;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
wm8994->bclk *= 16;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
wm8994->bclk *= 20;
aif1 |= (0x01 << WM8994_AIF1_WL_SHIFT);
break;
case SNDRV_PCM_FORMAT_S24_LE:
wm8994->bclk *= 24;
aif1 |= (0x10 << WM8994_AIF1_WL_SHIFT);
break;
case SNDRV_PCM_FORMAT_S32_LE:
wm8994->bclk *= 32;
aif1 |= (0x11 << WM8994_AIF1_WL_SHIFT);
break;
default:
return -EINVAL;
}
ret = configure_clock(codec);
if (ret != 0)
return ret;
dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8994->bclk);
/* Select nearest CLK_SYS_RATE */
if (wm8994->fs == 8000)
best = 3;
else {
best = 0;
best_val = abs((wm8994->sysclk_rate / clk_sys_rates[0].ratio)
- wm8994->fs);