[alsa-devel] [PATCH 1/3] ASoC: cs42l73: Add platform data support for cs42l73 codec
Brian Austin
brian.austin at cirrus.com
Thu Oct 17 18:03:33 CEST 2013
Add support for RST GPIO and Charge Pump Freq in platform data
Signed-off-by: Brian Austin <brian.austin at cirrus.com>
---
include/sound/cs42l73.h | 22 ++++++++++++++++++++
sound/soc/codecs/cs42l73.c | 51 ++++++++++++++++++++++++++++++----------------
sound/soc/codecs/cs42l73.h | 1 +
3 files changed, 56 insertions(+), 18 deletions(-)
create mode 100644 include/sound/cs42l73.h
diff --git a/include/sound/cs42l73.h b/include/sound/cs42l73.h
new file mode 100644
index 0000000..f354be4
--- /dev/null
+++ b/include/sound/cs42l73.h
@@ -0,0 +1,22 @@
+/*
+ * linux/sound/cs42l73.h -- Platform data for CS42L73
+ *
+ * Copyright (c) 2012 Cirrus Logic Inc.
+ *
+ * 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.
+ */
+
+#ifndef __CS42L73_H
+#define __CS42L73_H
+
+struct cs42l73_platform_data {
+ /* RST GPIO */
+ unsigned int reset_gpio;
+ unsigned int chgfreq;
+ int jack_detection;
+ unsigned int mclk_freq;
+};
+
+#endif /* __CS42L73_H */
diff --git a/sound/soc/codecs/cs42l73.c b/sound/soc/codecs/cs42l73.c
index 3b20c86..dfdb715 100644
--- a/sound/soc/codecs/cs42l73.c
+++ b/sound/soc/codecs/cs42l73.c
@@ -17,6 +17,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/gpio.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
@@ -28,6 +29,7 @@
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
+#include <sound/cs42l73.h>
#include "cs42l73.h"
struct sp_config {
@@ -35,6 +37,7 @@ struct sp_config {
u32 srate;
};
struct cs42l73_private {
+ struct cs42l73_platform_data pdata;
struct sp_config config[3];
struct regmap *regmap;
u32 sysclk;
@@ -310,15 +313,6 @@ static const struct soc_enum ng_delay_enum =
SOC_ENUM_SINGLE(CS42L73_NGCAB, 0,
ARRAY_SIZE(cs42l73_ng_delay_text), cs42l73_ng_delay_text);
-static const char * const charge_pump_freq_text[] = {
- "0", "1", "2", "3", "4",
- "5", "6", "7", "8", "9",
- "10", "11", "12", "13", "14", "15" };
-
-static const struct soc_enum charge_pump_enum =
- SOC_ENUM_SINGLE(CS42L73_CPFCHC, 4,
- ARRAY_SIZE(charge_pump_freq_text), charge_pump_freq_text);
-
static const char * const cs42l73_mono_mix_texts[] = {
"Left", "Right", "Mono Mix"};
@@ -511,8 +505,6 @@ static const struct snd_kcontrol_new cs42l73_snd_controls[] = {
SOC_SINGLE("NG Threshold", CS42L73_NGCAB, 2, 7, 0),
SOC_ENUM("NG Delay", ng_delay_enum),
- SOC_ENUM("Charge Pump Frequency", charge_pump_enum),
-
SOC_DOUBLE_R_TLV("XSP-IP Volume",
CS42L73_XSPAIPAA, CS42L73_XSPBIPBA, 0, 0x3F, 1,
attn_tlv),
@@ -1367,11 +1359,16 @@ static int cs42l73_probe(struct snd_soc_codec *codec)
return ret;
}
- regcache_cache_only(cs42l73->regmap, true);
-
cs42l73_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
- cs42l73->mclksel = CS42L73_CLKID_MCLK1; /* MCLK1 as master clk */
+ /* Set Charge Pump Frequency */
+ if (cs42l73->pdata.chgfreq)
+ snd_soc_update_bits(codec, CS42L73_CPFCHC,
+ CS42L73_CHARGEPUMP_MASK,
+ cs42l73->pdata.chgfreq << 4);
+
+ /* MCLK1 as master clk */
+ cs42l73->mclksel = CS42L73_CLKID_MCLK1;
cs42l73->mclk = 0;
return ret;
@@ -1415,6 +1412,7 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
{
struct cs42l73_private *cs42l73;
+ struct cs42l73_platform_data *pdata = dev_get_platdata(&i2c_client->dev);
int ret;
unsigned int devid = 0;
unsigned int reg;
@@ -1426,14 +1424,32 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client,
return -ENOMEM;
}
- i2c_set_clientdata(i2c_client, cs42l73);
-
cs42l73->regmap = devm_regmap_init_i2c(i2c_client, &cs42l73_regmap);
if (IS_ERR(cs42l73->regmap)) {
ret = PTR_ERR(cs42l73->regmap);
dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
return ret;
}
+
+ if (pdata)
+ cs42l73->pdata = *pdata;
+
+ i2c_set_clientdata(i2c_client, cs42l73);
+
+ if (cs42l73->pdata.reset_gpio) {
+ ret = gpio_request_one(cs42l73->pdata.reset_gpio,
+ GPIOF_OUT_INIT_HIGH, "CS42L73 /RST");
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "Failed to request /RST %d: %d\n",
+ cs42l73->pdata.reset_gpio, ret);
+ return ret;
+ }
+ gpio_set_value_cansleep(cs42l73->pdata.reset_gpio, 0);
+ gpio_set_value_cansleep(cs42l73->pdata.reset_gpio, 1);
+ }
+
+ regcache_cache_bypass(cs42l73->regmap, true);
+
/* initialize codec */
ret = regmap_read(cs42l73->regmap, CS42L73_DEVID_AB, ®);
devid = (reg & 0xFF) << 12;
@@ -1444,7 +1460,6 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client,
ret = regmap_read(cs42l73->regmap, CS42L73_DEVID_E, ®);
devid |= (reg & 0xF0) >> 4;
-
if (devid != CS42L73_DEVID) {
ret = -ENODEV;
dev_err(&i2c_client->dev,
@@ -1462,7 +1477,7 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client,
dev_info(&i2c_client->dev,
"Cirrus Logic CS42L73, Revision: %02X\n", reg & 0xFF);
- regcache_cache_only(cs42l73->regmap, true);
+ regcache_cache_bypass(cs42l73->regmap, false);
ret = snd_soc_register_codec(&i2c_client->dev,
&soc_codec_dev_cs42l73, cs42l73_dai,
diff --git a/sound/soc/codecs/cs42l73.h b/sound/soc/codecs/cs42l73.h
index f30a4c4..4f83d39 100644
--- a/sound/soc/codecs/cs42l73.h
+++ b/sound/soc/codecs/cs42l73.h
@@ -159,6 +159,7 @@
#define THMOVLD_115C 2
#define THMOVLD_098C 3
+#define CS42L73_CHARGEPUMP_MASK (0xF0)
/* CS42L73_ASPC, CS42L73_XSPC, CS42L73_VSPC */
#define SP_3ST (1 << 7)
--
1.8.4.rc3
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