ASoC: cs42l73: Add platform data support for cs42l73 codec

Add support for RST GPIO and Charge Pump Freq in platform data

Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/include/sound/cs42l73.h b/include/sound/cs42l73.h
new file mode 100644 (file)
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..db9d396 100644 (file)
--- 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, &reg);
        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, &reg);
        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 (file)
--- 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)