Revision 761bfb999868c413aabed8caa345694836ec6f11 authored by Alex Deucher on 06 August 2013, 17:34:00 UTC, committed by Alex Deucher on 07 August 2013, 21:37:19 UTC
The rlc is required for dpm to work properly, so if the rlc ucode is missing, don't enable dpm. Enabling dpm without the rlc enabled can result in hangs. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 parent f61d5b4
wm2000.c
/*
* wm2000.c -- WM2000 ALSA Soc Audio driver
*
* Copyright 2008-2011 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The download image for the WM2000 will be requested as
* 'wm2000_anc.bin' by default (overridable via platform data) at
* runtime and is expected to be in flat binary format. This is
* generated by Wolfson configuration tools and includes
* system-specific callibration information. If supplied as a
* sequence of ASCII-encoded hexidecimal bytes this can be converted
* into a flat binary with a command such as this on the command line:
*
* perl -e 'while (<>) { s/[\r\n]+// ; printf("%c", hex($_)); }'
* < file > wm2000_anc.bin
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/firmware.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/debugfs.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/wm2000.h>
#include "wm2000.h"
#define WM2000_NUM_SUPPLIES 3
static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = {
"SPKVDD",
"DBVDD",
"DCVDD",
};
enum wm2000_anc_mode {
ANC_ACTIVE = 0,
ANC_BYPASS = 1,
ANC_STANDBY = 2,
ANC_OFF = 3,
};
struct wm2000_priv {
struct i2c_client *i2c;
struct regmap *regmap;
struct clk *mclk;
struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES];
enum wm2000_anc_mode anc_mode;
unsigned int anc_active:1;
unsigned int anc_eng_ena:1;
unsigned int spk_ena:1;
unsigned int speech_clarity:1;
int anc_download_size;
char *anc_download;
struct mutex lock;
};
static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
unsigned int value)
{
struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
return regmap_write(wm2000->regmap, reg, value);
}
static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r)
{
struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
unsigned int val;
int ret;
ret = regmap_read(wm2000->regmap, r, &val);
if (ret < 0)
return -1;
return val;
}
static void wm2000_reset(struct wm2000_priv *wm2000)
{
struct i2c_client *i2c = wm2000->i2c;
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
wm2000_write(i2c, WM2000_REG_ID1, 0);
wm2000->anc_mode = ANC_OFF;
}
static int wm2000_poll_bit(struct i2c_client *i2c,
unsigned int reg, u8 mask)
{
int timeout = 4000;
int val;
val = wm2000_read(i2c, reg);
while (!(val & mask) && --timeout) {
msleep(1);
val = wm2000_read(i2c, reg);
}
if (timeout == 0)
return 0;
else
return 1;
}
static int wm2000_power_up(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
unsigned long rate;
int ret;
BUG_ON(wm2000->anc_mode != ANC_OFF);
dev_dbg(&i2c->dev, "Beginning power up\n");
ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
rate = clk_get_rate(wm2000->mclk);
if (rate <= 13500000) {
dev_dbg(&i2c->dev, "Disabling MCLK divider\n");
wm2000_write(i2c, WM2000_REG_SYS_CTL2,
WM2000_MCLK_DIV2_ENA_CLR);
} else {
dev_dbg(&i2c->dev, "Enabling MCLK divider\n");
wm2000_write(i2c, WM2000_REG_SYS_CTL2,
WM2000_MCLK_DIV2_ENA_SET);
}
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET);
/* Wait for ANC engine to become ready */
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev, "ANC engine failed to reset\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_BOOT_COMPLETE)) {
dev_err(&i2c->dev, "ANC engine failed to initialise\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
/* Open code download of the data since it is the only bulk
* write we do. */
dev_dbg(&i2c->dev, "Downloading %d bytes\n",
wm2000->anc_download_size - 2);
ret = i2c_master_send(i2c, wm2000->anc_download,
wm2000->anc_download_size);
if (ret < 0) {
dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret);
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return ret;
}
if (ret != wm2000->anc_download_size) {
dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n",
ret, wm2000->anc_download_size);
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -EIO;
}
dev_dbg(&i2c->dev, "Download complete\n");
if (analogue) {
wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_MOUSE_ENABLE |
WM2000_MODE_THERMAL_ENABLE);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_MOUSE_ENABLE |
WM2000_MODE_THERMAL_ENABLE);
}
ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY);
if (wm2000->speech_clarity)
ret |= WM2000_SPEECH_CLARITY;
else
ret &= ~WM2000_SPEECH_CLARITY;
wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret);
wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33);
wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_MOUSE_ACTIVE)) {
dev_err(&i2c->dev, "Timed out waiting for device\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
dev_dbg(&i2c->dev, "ANC active\n");
if (analogue)
dev_dbg(&i2c->dev, "Analogue active\n");
wm2000->anc_mode = ANC_ACTIVE;
return 0;
}
static int wm2000_power_down(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
if (analogue) {
wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_POWER_DOWN);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_POWER_DOWN);
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_POWER_DOWN_COMPLETE)) {
dev_err(&i2c->dev, "Timeout waiting for ANC power down\n");
return -ETIMEDOUT;
}
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
return -ETIMEDOUT;
}
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
dev_dbg(&i2c->dev, "powered off\n");
wm2000->anc_mode = ANC_OFF;
return 0;
}
static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
BUG_ON(wm2000->anc_mode != ANC_ACTIVE);
if (analogue) {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_BYPASS_ENTRY);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_BYPASS_ENTRY);
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_ANC_DISABLED)) {
dev_err(&i2c->dev, "Timeout waiting for ANC disable\n");
return -ETIMEDOUT;
}
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
return -ETIMEDOUT;
}
wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
wm2000->anc_mode = ANC_BYPASS;
dev_dbg(&i2c->dev, "bypass enabled\n");
return 0;
}
static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
BUG_ON(wm2000->anc_mode != ANC_BYPASS);
wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
if (analogue) {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_MOUSE_ENABLE |
WM2000_MODE_THERMAL_ENABLE);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_MOUSE_ENABLE |
WM2000_MODE_THERMAL_ENABLE);
}
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_MOUSE_ACTIVE)) {
dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
return -ETIMEDOUT;
}
wm2000->anc_mode = ANC_ACTIVE;
dev_dbg(&i2c->dev, "MOUSE active\n");
return 0;
}
static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
BUG_ON(wm2000->anc_mode != ANC_ACTIVE);
if (analogue) {
wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_STANDBY_ENTRY);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_STANDBY_ENTRY);
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_ANC_DISABLED)) {
dev_err(&i2c->dev,
"Timed out waiting for ANC disable after 1ms\n");
return -ETIMEDOUT;
}
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev,
"Timed out waiting for standby\n");
return -ETIMEDOUT;
}
wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
wm2000->anc_mode = ANC_STANDBY;
dev_dbg(&i2c->dev, "standby\n");
if (analogue)
dev_dbg(&i2c->dev, "Analogue disabled\n");
return 0;
}
static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
BUG_ON(wm2000->anc_mode != ANC_STANDBY);
wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
if (analogue) {
wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_ANA_SEQ_INCLUDE |
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_MOUSE_ENABLE);
} else {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_MOUSE_ENABLE);
}
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_MOUSE_ACTIVE)) {
dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
return -ETIMEDOUT;
}
wm2000->anc_mode = ANC_ACTIVE;
dev_dbg(&i2c->dev, "MOUSE active\n");
if (analogue)
dev_dbg(&i2c->dev, "Analogue enabled\n");
return 0;
}
typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue);
static struct {
enum wm2000_anc_mode source;
enum wm2000_anc_mode dest;
int analogue;
wm2000_mode_fn step[2];
} anc_transitions[] = {
{
.source = ANC_OFF,
.dest = ANC_ACTIVE,
.analogue = 1,
.step = {
wm2000_power_up,
},
},
{
.source = ANC_OFF,
.dest = ANC_STANDBY,
.step = {
wm2000_power_up,
wm2000_enter_standby,
},
},
{
.source = ANC_OFF,
.dest = ANC_BYPASS,
.analogue = 1,
.step = {
wm2000_power_up,
wm2000_enter_bypass,
},
},
{
.source = ANC_ACTIVE,
.dest = ANC_BYPASS,
.analogue = 1,
.step = {
wm2000_enter_bypass,
},
},
{
.source = ANC_ACTIVE,
.dest = ANC_STANDBY,
.analogue = 1,
.step = {
wm2000_enter_standby,
},
},
{
.source = ANC_ACTIVE,
.dest = ANC_OFF,
.analogue = 1,
.step = {
wm2000_power_down,
},
},
{
.source = ANC_BYPASS,
.dest = ANC_ACTIVE,
.analogue = 1,
.step = {
wm2000_exit_bypass,
},
},
{
.source = ANC_BYPASS,
.dest = ANC_STANDBY,
.analogue = 1,
.step = {
wm2000_exit_bypass,
wm2000_enter_standby,
},
},
{
.source = ANC_BYPASS,
.dest = ANC_OFF,
.step = {
wm2000_exit_bypass,
wm2000_power_down,
},
},
{
.source = ANC_STANDBY,
.dest = ANC_ACTIVE,
.analogue = 1,
.step = {
wm2000_exit_standby,
},
},
{
.source = ANC_STANDBY,
.dest = ANC_BYPASS,
.analogue = 1,
.step = {
wm2000_exit_standby,
wm2000_enter_bypass,
},
},
{
.source = ANC_STANDBY,
.dest = ANC_OFF,
.step = {
wm2000_exit_standby,
wm2000_power_down,
},
},
};
static int wm2000_anc_transition(struct wm2000_priv *wm2000,
enum wm2000_anc_mode mode)
{
struct i2c_client *i2c = wm2000->i2c;
int i, j;
int ret;
if (wm2000->anc_mode == mode)
return 0;
for (i = 0; i < ARRAY_SIZE(anc_transitions); i++)
if (anc_transitions[i].source == wm2000->anc_mode &&
anc_transitions[i].dest == mode)
break;
if (i == ARRAY_SIZE(anc_transitions)) {
dev_err(&i2c->dev, "No transition for %d->%d\n",
wm2000->anc_mode, mode);
return -EINVAL;
}
/* Maintain clock while active */
if (anc_transitions[i].source == ANC_OFF) {
ret = clk_prepare_enable(wm2000->mclk);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable MCLK: %d\n", ret);
return ret;
}
}
for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) {
if (!anc_transitions[i].step[j])
break;
ret = anc_transitions[i].step[j](i2c,
anc_transitions[i].analogue);
if (ret != 0)
return ret;
}
if (anc_transitions[i].dest == ANC_OFF)
clk_disable_unprepare(wm2000->mclk);
return ret;
}
static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
{
struct i2c_client *i2c = wm2000->i2c;
enum wm2000_anc_mode mode;
if (wm2000->anc_eng_ena && wm2000->spk_ena)
if (wm2000->anc_active)
mode = ANC_ACTIVE;
else
mode = ANC_BYPASS;
else
mode = ANC_STANDBY;
dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n",
mode, wm2000->anc_eng_ena, !wm2000->spk_ena,
wm2000->anc_active);
return wm2000_anc_transition(wm2000, mode);
}
static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->anc_active;
return 0;
}
static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
int anc_active = ucontrol->value.enumerated.item[0];
int ret;
if (anc_active > 1)
return -EINVAL;
mutex_lock(&wm2000->lock);
wm2000->anc_active = anc_active;
ret = wm2000_anc_set_mode(wm2000);
mutex_unlock(&wm2000->lock);
return ret;
}
static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->spk_ena;
return 0;
}
static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
int val = ucontrol->value.enumerated.item[0];
int ret;
if (val > 1)
return -EINVAL;
mutex_lock(&wm2000->lock);
wm2000->spk_ena = val;
ret = wm2000_anc_set_mode(wm2000);
mutex_unlock(&wm2000->lock);
return ret;
}
static const struct snd_kcontrol_new wm2000_controls[] = {
SOC_SINGLE("ANC Volume", WM2000_REG_ANC_GAIN_CTRL, 0, 255, 0),
SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0,
wm2000_anc_mode_get,
wm2000_anc_mode_put),
SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0,
wm2000_speaker_get,
wm2000_speaker_put),
};
static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
int ret;
mutex_lock(&wm2000->lock);
if (SND_SOC_DAPM_EVENT_ON(event))
wm2000->anc_eng_ena = 1;
if (SND_SOC_DAPM_EVENT_OFF(event))
wm2000->anc_eng_ena = 0;
ret = wm2000_anc_set_mode(wm2000);
mutex_unlock(&wm2000->lock);
return ret;
}
static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = {
/* Externally visible pins */
SND_SOC_DAPM_OUTPUT("SPKN"),
SND_SOC_DAPM_OUTPUT("SPKP"),
SND_SOC_DAPM_INPUT("LINN"),
SND_SOC_DAPM_INPUT("LINP"),
SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
wm2000_anc_power_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
};
/* Target, Path, Source */
static const struct snd_soc_dapm_route wm2000_audio_map[] = {
{ "SPKN", NULL, "ANC Engine" },
{ "SPKP", NULL, "ANC Engine" },
{ "ANC Engine", NULL, "LINN" },
{ "ANC Engine", NULL, "LINP" },
};
#ifdef CONFIG_PM
static int wm2000_suspend(struct snd_soc_codec *codec)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
return wm2000_anc_transition(wm2000, ANC_OFF);
}
static int wm2000_resume(struct snd_soc_codec *codec)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
return wm2000_anc_set_mode(wm2000);
}
#else
#define wm2000_suspend NULL
#define wm2000_resume NULL
#endif
static bool wm2000_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM2000_REG_SYS_START:
case WM2000_REG_ANC_GAIN_CTRL:
case WM2000_REG_MSE_TH1:
case WM2000_REG_MSE_TH2:
case WM2000_REG_SPEECH_CLARITY:
case WM2000_REG_SYS_WATCHDOG:
case WM2000_REG_ANA_VMID_PD_TIME:
case WM2000_REG_ANA_VMID_PU_TIME:
case WM2000_REG_CAT_FLTR_INDX:
case WM2000_REG_CAT_GAIN_0:
case WM2000_REG_SYS_STATUS:
case WM2000_REG_SYS_MODE_CNTRL:
case WM2000_REG_SYS_START0:
case WM2000_REG_SYS_START1:
case WM2000_REG_ID1:
case WM2000_REG_ID2:
case WM2000_REG_REVISON:
case WM2000_REG_SYS_CTL1:
case WM2000_REG_SYS_CTL2:
case WM2000_REG_ANC_STAT:
case WM2000_REG_IF_CTL:
case WM2000_REG_ANA_MIC_CTL:
case WM2000_REG_SPK_CTL:
return true;
default:
return false;
}
}
static const struct regmap_config wm2000_regmap = {
.reg_bits = 16,
.val_bits = 8,
.max_register = WM2000_REG_SPK_CTL,
.readable_reg = wm2000_readable_reg,
};
static int wm2000_probe(struct snd_soc_codec *codec)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
snd_soc_codec_set_cache_io(codec, 16, 8, SND_SOC_REGMAP);
/* This will trigger a transition to standby mode by default */
wm2000_anc_set_mode(wm2000);
return 0;
}
static int wm2000_remove(struct snd_soc_codec *codec)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
return wm2000_anc_transition(wm2000, ANC_OFF);
}
static struct snd_soc_codec_driver soc_codec_dev_wm2000 = {
.probe = wm2000_probe,
.remove = wm2000_remove,
.suspend = wm2000_suspend,
.resume = wm2000_resume,
.dapm_widgets = wm2000_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets),
.dapm_routes = wm2000_audio_map,
.num_dapm_routes = ARRAY_SIZE(wm2000_audio_map),
.controls = wm2000_controls,
.num_controls = ARRAY_SIZE(wm2000_controls),
};
static int wm2000_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *i2c_id)
{
struct wm2000_priv *wm2000;
struct wm2000_platform_data *pdata;
const char *filename;
const struct firmware *fw = NULL;
int ret, i;
int reg;
u16 id;
wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv),
GFP_KERNEL);
if (wm2000 == NULL) {
dev_err(&i2c->dev, "Unable to allocate private data\n");
return -ENOMEM;
}
mutex_init(&wm2000->lock);
dev_set_drvdata(&i2c->dev, wm2000);
wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap);
if (IS_ERR(wm2000->regmap)) {
ret = PTR_ERR(wm2000->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
goto out;
}
for (i = 0; i < WM2000_NUM_SUPPLIES; i++)
wm2000->supplies[i].supply = wm2000_supplies[i];
ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES,
wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
/* Verify that this is a WM2000 */
reg = wm2000_read(i2c, WM2000_REG_ID1);
id = reg << 8;
reg = wm2000_read(i2c, WM2000_REG_ID2);
id |= reg & 0xff;
if (id != 0x2000) {
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
ret = -ENODEV;
goto err_supplies;
}
reg = wm2000_read(i2c, WM2000_REG_REVISON);
dev_info(&i2c->dev, "revision %c\n", reg + 'A');
wm2000->mclk = devm_clk_get(&i2c->dev, "MCLK");
if (IS_ERR(wm2000->mclk)) {
ret = PTR_ERR(wm2000->mclk);
dev_err(&i2c->dev, "Failed to get MCLK: %d\n", ret);
goto err_supplies;
}
filename = "wm2000_anc.bin";
pdata = dev_get_platdata(&i2c->dev);
if (pdata) {
wm2000->speech_clarity = !pdata->speech_enh_disable;
if (pdata->download_file)
filename = pdata->download_file;
}
ret = request_firmware(&fw, filename, &i2c->dev);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
goto err_supplies;
}
/* Pre-cook the concatenation of the register address onto the image */
wm2000->anc_download_size = fw->size + 2;
wm2000->anc_download = devm_kzalloc(&i2c->dev,
wm2000->anc_download_size,
GFP_KERNEL);
if (wm2000->anc_download == NULL) {
dev_err(&i2c->dev, "Out of memory\n");
ret = -ENOMEM;
goto err_supplies;
}
wm2000->anc_download[0] = 0x80;
wm2000->anc_download[1] = 0x00;
memcpy(wm2000->anc_download + 2, fw->data, fw->size);
wm2000->anc_eng_ena = 1;
wm2000->anc_active = 1;
wm2000->spk_ena = 1;
wm2000->i2c = i2c;
wm2000_reset(wm2000);
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0);
err_supplies:
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
out:
release_firmware(fw);
return ret;
}
static int wm2000_i2c_remove(struct i2c_client *i2c)
{
snd_soc_unregister_codec(&i2c->dev);
return 0;
}
static const struct i2c_device_id wm2000_i2c_id[] = {
{ "wm2000", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id);
static struct i2c_driver wm2000_i2c_driver = {
.driver = {
.name = "wm2000",
.owner = THIS_MODULE,
},
.probe = wm2000_i2c_probe,
.remove = wm2000_i2c_remove,
.id_table = wm2000_i2c_id,
};
module_i2c_driver(wm2000_i2c_driver);
MODULE_DESCRIPTION("ASoC WM2000 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
MODULE_LICENSE("GPL");
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