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Diffstat (limited to 'sound/soc/codecs/wm2000.c')
-rw-r--r--sound/soc/codecs/wm2000.c472
1 files changed, 270 insertions, 202 deletions
diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c
index a3b9cbb20ee..a4c352cc346 100644
--- a/sound/soc/codecs/wm2000.c
+++ b/sound/soc/codecs/wm2000.c
@@ -1,7 +1,7 @@
/*
* wm2000.c -- WM2000 ALSA Soc Audio driver
*
- * Copyright 2008-2010 Wolfson Microelectronics PLC.
+ * Copyright 2008-2011 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
@@ -26,11 +26,13 @@
#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/platform_device.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>
@@ -43,6 +45,14 @@
#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,
@@ -52,6 +62,10 @@ enum wm2000_anc_mode {
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;
@@ -59,66 +73,32 @@ struct wm2000_priv {
unsigned int anc_eng_ena:1;
unsigned int spk_ena:1;
- unsigned int mclk_div:1;
unsigned int speech_clarity:1;
int anc_download_size;
char *anc_download;
-};
-static struct i2c_client *wm2000_i2c;
+ struct mutex lock;
+};
static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
unsigned int value)
{
- u8 data[3];
- int ret;
-
- data[0] = (reg >> 8) & 0xff;
- data[1] = reg & 0xff;
- data[2] = value & 0xff;
-
- dev_vdbg(&i2c->dev, "write %x = %x\n", reg, value);
-
- ret = i2c_master_send(i2c, data, 3);
- if (ret == 3)
- return 0;
- if (ret < 0)
- return ret;
- else
- return -EIO;
+ 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 i2c_msg xfer[2];
- u8 reg[2];
- u8 data;
+ struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
+ unsigned int val;
int ret;
- /* Write register */
- reg[0] = (r >> 8) & 0xff;
- reg[1] = r & 0xff;
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = sizeof(reg);
- xfer[0].buf = &reg[0];
-
- /* Read data */
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_RD;
- xfer[1].len = 1;
- xfer[1].buf = &data;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret != 2) {
- dev_err(&i2c->dev, "i2c_transfer() returned %d\n", ret);
- return 0;
- }
-
- dev_vdbg(&i2c->dev, "read %x from %x\n", data, r);
+ ret = regmap_read(wm2000->regmap, r, &val);
+ if (ret < 0)
+ return -1;
- return data;
+ return val;
}
static void wm2000_reset(struct wm2000_priv *wm2000)
@@ -133,8 +113,9 @@ static void wm2000_reset(struct wm2000_priv *wm2000)
}
static int wm2000_poll_bit(struct i2c_client *i2c,
- unsigned int reg, u8 mask, int timeout)
+ unsigned int reg, u8 mask)
{
+ int timeout = 4000;
int val;
val = wm2000_read(i2c, reg);
@@ -153,13 +134,22 @@ static int wm2000_poll_bit(struct i2c_client *i2c,
static int wm2000_power_up(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
- int ret, timeout;
+ unsigned long rate;
+ int ret;
- BUG_ON(wm2000->anc_mode != ANC_OFF);
+ if (WARN_ON(wm2000->anc_mode != ANC_OFF))
+ return -EINVAL;
dev_dbg(&i2c->dev, "Beginning power up\n");
- if (!wm2000->mclk_div) {
+ 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);
@@ -174,14 +164,16 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
/* Wait for ANC engine to become ready */
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
- WM2000_ANC_ENG_IDLE, 1)) {
+ 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, 1)) {
+ WM2000_STATUS_BOOT_COMPLETE)) {
dev_err(&i2c->dev, "ANC engine failed to initialise\n");
+ regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
@@ -196,27 +188,26 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
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) {
- timeout = 248;
- wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4);
+ 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 {
- timeout = 10;
-
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_MOUSE_ENABLE |
WM2000_MODE_THERMAL_ENABLE);
@@ -224,9 +215,9 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY);
if (wm2000->speech_clarity)
- ret &= ~WM2000_SPEECH_CLARITY;
- else
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);
@@ -235,9 +226,9 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
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, timeout)) {
- dev_err(&i2c->dev, "Timed out waiting for device after %dms\n",
- timeout * 10);
+ WM2000_STATUS_MOUSE_ACTIVE)) {
+ dev_err(&i2c->dev, "Timed out waiting for device\n");
+ regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
@@ -252,32 +243,31 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
static int wm2000_power_down(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
- int timeout;
if (analogue) {
- timeout = 248;
- wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4);
+ 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 {
- timeout = 10;
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, timeout)) {
+ 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, 1)) {
+ 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;
@@ -288,7 +278,8 @@ 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 (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
+ return -EINVAL;
if (analogue) {
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
@@ -302,13 +293,13 @@ static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue)
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
- WM2000_STATUS_ANC_DISABLED, 10)) {
+ 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, 1)) {
+ WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
return -ETIMEDOUT;
}
@@ -326,7 +317,8 @@ 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);
+ if (WARN_ON(wm2000->anc_mode != ANC_BYPASS))
+ return -EINVAL;
wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
@@ -345,7 +337,7 @@ static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
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, 10)) {
+ WM2000_STATUS_MOUSE_ACTIVE)) {
dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
return -ETIMEDOUT;
}
@@ -359,38 +351,33 @@ static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
- int timeout;
- BUG_ON(wm2000->anc_mode != ANC_ACTIVE);
+ if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
+ return -EINVAL;
if (analogue) {
- timeout = 248;
- wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4);
+ 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 {
- timeout = 10;
-
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, timeout)) {
+ 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,
- 1)) {
+ if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev,
- "Timed out waiting for standby after %dms\n",
- timeout * 10);
+ "Timed out waiting for standby\n");
return -ETIMEDOUT;
}
@@ -408,23 +395,20 @@ static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
- int timeout;
- BUG_ON(wm2000->anc_mode != ANC_STANDBY);
+ if (WARN_ON(wm2000->anc_mode != ANC_STANDBY))
+ return -EINVAL;
wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
if (analogue) {
- timeout = 248;
- wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4);
+ 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 {
- timeout = 10;
-
wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
WM2000_MODE_THERMAL_ENABLE |
WM2000_MODE_MOUSE_ENABLE);
@@ -434,9 +418,8 @@ static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
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, timeout)) {
- dev_err(&i2c->dev, "Timed out waiting for MOUSE after %dms\n",
- timeout * 10);
+ WM2000_STATUS_MOUSE_ACTIVE)) {
+ dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
return -ETIMEDOUT;
}
@@ -577,6 +560,15 @@ static int wm2000_anc_transition(struct wm2000_priv *wm2000,
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;
@@ -586,7 +578,10 @@ static int wm2000_anc_transition(struct wm2000_priv *wm2000,
return ret;
}
- return 0;
+ if (anc_transitions[i].dest == ANC_OFF)
+ clk_disable_unprepare(wm2000->mclk);
+
+ return ret;
}
static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
@@ -612,7 +607,8 @@ static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->anc_active;
@@ -622,21 +618,30 @@ static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(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;
- return wm2000_anc_set_mode(wm2000);
+ 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 wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->spk_ena;
@@ -646,18 +651,27 @@ static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(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;
- return wm2000_anc_set_mode(wm2000);
+ 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),
@@ -669,7 +683,11 @@ static const struct snd_kcontrol_new wm2000_controls[] = {
static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ 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;
@@ -677,16 +695,20 @@ static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
if (SND_SOC_DAPM_EVENT_OFF(event))
wm2000->anc_eng_ena = 0;
- return wm2000_anc_set_mode(wm2000);
+ 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("WM2000 SPKN"),
-SND_SOC_DAPM_OUTPUT("WM2000 SPKP"),
+SND_SOC_DAPM_OUTPUT("SPKN"),
+SND_SOC_DAPM_OUTPUT("SPKP"),
-SND_SOC_DAPM_INPUT("WM2000 LINN"),
-SND_SOC_DAPM_INPUT("WM2000 LINP"),
+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,
@@ -694,59 +716,149 @@ SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
};
/* Target, Path, Source */
-static const struct snd_soc_dapm_route audio_map[] = {
- { "WM2000 SPKN", NULL, "ANC Engine" },
- { "WM2000 SPKP", NULL, "ANC Engine" },
- { "ANC Engine", NULL, "WM2000 LINN" },
- { "ANC Engine", NULL, "WM2000 LINP" },
+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" },
};
-/* Called from the machine driver */
-int wm2000_add_controls(struct snd_soc_codec *codec)
+#ifdef CONFIG_PM
+static int wm2000_suspend(struct snd_soc_codec *codec)
{
- struct snd_soc_dapm_context *dapm = &codec->dapm;
- int ret;
+ 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
- if (!wm2000_i2c) {
- pr_err("WM2000 not yet probed\n");
- return -ENODEV;
+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;
}
+}
- ret = snd_soc_dapm_new_controls(dapm, wm2000_dapm_widgets,
- ARRAY_SIZE(wm2000_dapm_widgets));
- if (ret < 0)
- return ret;
+static const struct regmap_config wm2000_regmap = {
+ .reg_bits = 16,
+ .val_bits = 8,
- ret = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
- if (ret < 0)
- return ret;
+ .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);
- return snd_soc_add_controls(codec, wm2000_controls,
- ARRAY_SIZE(wm2000_controls));
+ /* This will trigger a transition to standby mode by default */
+ wm2000_anc_set_mode(wm2000);
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(wm2000_add_controls);
-static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *i2c_id)
+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;
- int reg, ret;
+ const struct firmware *fw = NULL;
+ int ret, i;
+ int reg;
u16 id;
- if (wm2000_i2c) {
- dev_err(&i2c->dev, "Another WM2000 is already registered\n");
- return -EINVAL;
- }
-
- wm2000 = kzalloc(sizeof(struct wm2000_priv), GFP_KERNEL);
+ 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;
@@ -756,16 +868,22 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
if (id != 0x2000) {
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
ret = -ENODEV;
- goto err;
+ 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->mclk_div = pdata->mclkdiv2;
wm2000->speech_clarity = !pdata->speech_enh_disable;
if (pdata->download_file)
@@ -775,25 +893,24 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
ret = request_firmware(&fw, filename, &i2c->dev);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
- goto err;
+ goto err_supplies;
}
/* Pre-cook the concatenation of the register address onto the image */
wm2000->anc_download_size = fw->size + 2;
- wm2000->anc_download = kmalloc(wm2000->anc_download_size, GFP_KERNEL);
+ 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_fw;
+ goto err_supplies;
}
wm2000->anc_download[0] = 0x80;
wm2000->anc_download[1] = 0x00;
memcpy(wm2000->anc_download + 2, fw->data, fw->size);
- release_firmware(fw);
-
- dev_set_drvdata(&i2c->dev, wm2000);
wm2000->anc_eng_ena = 1;
wm2000->anc_active = 1;
wm2000->spk_ena = 1;
@@ -801,60 +918,23 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
wm2000_reset(wm2000);
- /* This will trigger a transition to standby mode by default */
- wm2000_anc_set_mode(wm2000);
-
- wm2000_i2c = i2c;
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0);
- return 0;
+err_supplies:
+ regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
-err_fw:
+out:
release_firmware(fw);
-err:
- kfree(wm2000);
return ret;
}
-static __devexit int wm2000_i2c_remove(struct i2c_client *i2c)
+static int wm2000_i2c_remove(struct i2c_client *i2c)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- wm2000_anc_transition(wm2000, ANC_OFF);
-
- wm2000_i2c = NULL;
- kfree(wm2000->anc_download);
- kfree(wm2000);
+ snd_soc_unregister_codec(&i2c->dev);
return 0;
}
-static void wm2000_i2c_shutdown(struct i2c_client *i2c)
-{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- wm2000_anc_transition(wm2000, ANC_OFF);
-}
-
-#ifdef CONFIG_PM
-static int wm2000_i2c_suspend(struct device *dev)
-{
- struct i2c_client *i2c = to_i2c_client(dev);
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- return wm2000_anc_transition(wm2000, ANC_OFF);
-}
-
-static int wm2000_i2c_resume(struct device *dev)
-{
- struct i2c_client *i2c = to_i2c_client(dev);
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- return wm2000_anc_set_mode(wm2000);
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(wm2000_pm, wm2000_i2c_suspend, wm2000_i2c_resume);
-
static const struct i2c_device_id wm2000_i2c_id[] = {
{ "wm2000", 0 },
{ }
@@ -865,25 +945,13 @@ static struct i2c_driver wm2000_i2c_driver = {
.driver = {
.name = "wm2000",
.owner = THIS_MODULE,
- .pm = &wm2000_pm,
},
.probe = wm2000_i2c_probe,
- .remove = __devexit_p(wm2000_i2c_remove),
- .shutdown = wm2000_i2c_shutdown,
+ .remove = wm2000_i2c_remove,
.id_table = wm2000_i2c_id,
};
-static int __init wm2000_init(void)
-{
- return i2c_add_driver(&wm2000_i2c_driver);
-}
-module_init(wm2000_init);
-
-static void __exit wm2000_exit(void)
-{
- i2c_del_driver(&wm2000_i2c_driver);
-}
-module_exit(wm2000_exit);
+module_i2c_driver(wm2000_i2c_driver);
MODULE_DESCRIPTION("ASoC WM2000 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-14 11:48:07 +0000