mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
952 lines
23 KiB
952 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* wm2000.c -- WM2000 ALSA Soc Audio driver |
|
* |
|
* Copyright 2008-2011 Wolfson Microelectronics PLC. |
|
* |
|
* Author: Mark Brown <[email protected]> |
|
* |
|
* 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 calibration 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 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) |
|
{ |
|
struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); |
|
int timeout = 4000; |
|
unsigned int val; |
|
|
|
regmap_read(wm2000->regmap, reg, &val); |
|
|
|
while (!(val & mask) && --timeout) { |
|
msleep(1); |
|
regmap_read(wm2000->regmap, reg, &val); |
|
} |
|
|
|
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; |
|
unsigned int val; |
|
int ret; |
|
|
|
if (WARN_ON(wm2000->anc_mode != ANC_OFF)) |
|
return -EINVAL; |
|
|
|
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 = regmap_read(wm2000->regmap, WM2000_REG_SPEECH_CLARITY, &val); |
|
if (ret != 0) { |
|
dev_err(&i2c->dev, "Unable to read Speech Clarity: %d\n", ret); |
|
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); |
|
return ret; |
|
} |
|
if (wm2000->speech_clarity) |
|
val |= WM2000_SPEECH_CLARITY; |
|
else |
|
val &= ~WM2000_SPEECH_CLARITY; |
|
wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, val); |
|
|
|
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); |
|
|
|
if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE)) |
|
return -EINVAL; |
|
|
|
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); |
|
|
|
if (WARN_ON(wm2000->anc_mode != ANC_BYPASS)) |
|
return -EINVAL; |
|
|
|
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); |
|
|
|
if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE)) |
|
return -EINVAL; |
|
|
|
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); |
|
|
|
if (WARN_ON(wm2000->anc_mode != ANC_STANDBY)) |
|
return -EINVAL; |
|
|
|
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 0; |
|
} |
|
|
|
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_component *component = snd_soc_kcontrol_component(kcontrol); |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
|
|
ucontrol->value.integer.value[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_component *component = snd_soc_kcontrol_component(kcontrol); |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
unsigned int anc_active = ucontrol->value.integer.value[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_component *component = snd_soc_kcontrol_component(kcontrol); |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
|
|
ucontrol->value.integer.value[0] = wm2000->spk_ena; |
|
|
|
return 0; |
|
} |
|
|
|
static int wm2000_speaker_put(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
unsigned int val = ucontrol->value.integer.value[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_component *component = snd_soc_dapm_to_component(w->dapm); |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->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_component *component) |
|
{ |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
|
|
return wm2000_anc_transition(wm2000, ANC_OFF); |
|
} |
|
|
|
static int wm2000_resume(struct snd_soc_component *component) |
|
{ |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->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_component *component) |
|
{ |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
|
|
/* This will trigger a transition to standby mode by default */ |
|
wm2000_anc_set_mode(wm2000); |
|
|
|
return 0; |
|
} |
|
|
|
static void wm2000_remove(struct snd_soc_component *component) |
|
{ |
|
struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev); |
|
|
|
wm2000_anc_transition(wm2000, ANC_OFF); |
|
} |
|
|
|
static const struct snd_soc_component_driver soc_component_dev_wm2000 = { |
|
.probe = wm2000_probe, |
|
.remove = wm2000_remove, |
|
.suspend = wm2000_suspend, |
|
.resume = wm2000_resume, |
|
.controls = wm2000_controls, |
|
.num_controls = ARRAY_SIZE(wm2000_controls), |
|
.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), |
|
.idle_bias_on = 1, |
|
.use_pmdown_time = 1, |
|
.endianness = 1, |
|
.non_legacy_dai_naming = 1, |
|
}; |
|
|
|
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; |
|
unsigned int reg; |
|
u16 id; |
|
|
|
wm2000 = devm_kzalloc(&i2c->dev, sizeof(*wm2000), GFP_KERNEL); |
|
if (!wm2000) |
|
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 */ |
|
ret = regmap_read(wm2000->regmap, WM2000_REG_ID1, ®); |
|
if (ret != 0) { |
|
dev_err(&i2c->dev, "Unable to read ID1: %d\n", ret); |
|
return ret; |
|
} |
|
id = reg << 8; |
|
ret = regmap_read(wm2000->regmap, WM2000_REG_ID2, ®); |
|
if (ret != 0) { |
|
dev_err(&i2c->dev, "Unable to read ID2: %d\n", ret); |
|
return ret; |
|
} |
|
id |= reg & 0xff; |
|
|
|
if (id != 0x2000) { |
|
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id); |
|
ret = -ENODEV; |
|
goto err_supplies; |
|
} |
|
|
|
ret = regmap_read(wm2000->regmap, WM2000_REG_REVISON, ®); |
|
if (ret != 0) { |
|
dev_err(&i2c->dev, "Unable to read Revision: %d\n", ret); |
|
return ret; |
|
} |
|
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) { |
|
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 = devm_snd_soc_register_component(&i2c->dev, |
|
&soc_component_dev_wm2000, NULL, 0); |
|
|
|
err_supplies: |
|
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies); |
|
|
|
out: |
|
release_firmware(fw); |
|
return ret; |
|
} |
|
|
|
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", |
|
}, |
|
.probe = wm2000_i2c_probe, |
|
.id_table = wm2000_i2c_id, |
|
}; |
|
|
|
module_i2c_driver(wm2000_i2c_driver); |
|
|
|
MODULE_DESCRIPTION("ASoC WM2000 driver"); |
|
MODULE_AUTHOR("Mark Brown <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|