ASoC: Add max97236 driver

Add driver for max97236 audio amplifier driver.

Change-Id: I7e62fa1bd6fee7fe57fde83ba649b288e784f145
Signed-off-by: Ravindra Lokhande <rlokhande@nvidia.com>
Reviewed-on: http://git-master/r/194757
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Scott Peterson <speterson@nvidia.com>
Reviewed-by: Gaurav Sarode <gsarode@nvidia.com>

4 files changed, 479 insertions, 0 deletions

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 4079d66af0f7..2cf24f0647e6 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -51,6 +51,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_MAX9850 if I2C
 	select SND_SOC_MAX9768 if I2C
 	select SND_SOC_MAX9877 if I2C
+	select SND_SOC_MAX97236 if I2C
 	select SND_SOC_MC13783 if MFD_MC13XXX
 	select SND_SOC_ML26124 if I2C
 	select SND_SOC_OMAP_HDMI_CODEC if OMAP4_DSS_HDMI
@@ -531,6 +532,9 @@ config SND_SOC_MAX9768
 config SND_SOC_MAX9877
 	tristate
 
+config SND_SOC_MAX97236
+	tristate
+
 config SND_SOC_MC13783
 	tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index f4ba144db193..484a10136e00 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -124,6 +124,7 @@ snd-soc-rt5640-objs := rt5640.o
 
 # Amp
 snd-soc-max9877-objs := max9877.o
+snd-soc-max97236-objs := max97236.o
 snd-soc-tpa6130a2-objs := tpa6130a2.o
 
 obj-$(CONFIG_SND_SOC_88PM860X)	+= snd-soc-88pm860x.o
@@ -251,4 +252,5 @@ obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o
 
 # Amp
 obj-$(CONFIG_SND_SOC_MAX9877)	+= snd-soc-max9877.o
+obj-$(CONFIG_SND_SOC_MAX97236)	+= snd-soc-max97236.o
 obj-$(CONFIG_SND_SOC_TPA6130A2)	+= snd-soc-tpa6130a2.o
diff --git a/sound/soc/codecs/max97236.c b/sound/soc/codecs/max97236.c
new file mode 100644
index 000000000000..8e1a5ebd002e
--- /dev/null
+++ b/sound/soc/codecs/max97236.c
@@ -0,0 +1,173 @@
+/*
+ * Max97236 Audio AMP driver
+ *
+ * Author: Ravindra Lokhande
+ *         rlokhande@nvidia.com
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/core.h>
+#include <sound/soc.h>
+
+#include "max97236.h"
+
+struct max97236 {
+	struct regmap *regmap;
+};
+
+static struct reg_default max97236_default_regs[] = {
+	{  0, 0x00 },
+	{  1, 0x00 },
+	{  2, 0x00 },
+	{  4, 0x00 },
+	{  5, 0x00 },
+	{  7, 0xC0 },
+	{  8, 0x40 },
+	{  9, 0x00 },
+	{ 10, 0x00 },
+	{ 11, 0x90 },
+	{ 12, 0x00 },
+	{ 13, 0x00 },
+	{ 14, 0x00 },
+	{ 15, 0x00 },
+	{ 16, 0x00 },
+	{ 17, 0x00 },
+	{ 18, 0x00 },
+	{ 19, 0x00 },
+	{ 20, 0x00 },
+	{ 21, 0x00 },
+	{ 22, 0x00 },
+	{ 23, 0x00 },
+	{ 24, 0x00 },
+	{ 25, 0x20 },
+	{ 26, 0x05 },
+	{ 29, 0x00 },
+	{ 30, 0x00 },
+};
+
+static int max97236_probe(struct snd_soc_codec *codec)
+{
+	struct max97236 *max97236 = snd_soc_codec_get_drvdata(codec);
+	int ret;
+
+	codec->control_data = max97236->regmap;
+	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
+	if (ret)
+		return ret;
+
+	snd_soc_write(codec, M97236_REG_1D_ENABLE1, M97236_EN1_SHDN);
+	snd_soc_write(codec, M97236_REG_1E_ENABLE2, M97236_EN2_LFTEN |
+			M97236_EN2_RGHEN | M97236_EN2_FAST | 0x10);
+	snd_soc_write(codec, M97236_REG_07_LEFT_VOLUME, ((M97236_LVOL_L_EQ_R |
+			0x39) & (~M97236_LVOL_MUTEL)));
+
+	return 0;
+}
+
+static const struct regmap_config max97236_i2c_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 31,
+	.reg_defaults = max97236_default_regs,
+	.num_reg_defaults = ARRAY_SIZE(max97236_default_regs),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_max97236 = {
+	.probe = max97236_probe,
+};
+
+static int __devinit max97236_i2c_probe(struct i2c_client *i2c,
+	const struct i2c_device_id *id)
+{
+	struct max97236 *max97236;
+	int err;
+
+	max97236 = devm_kzalloc(&i2c->dev, sizeof(*max97236), GFP_KERNEL);
+	if (!max97236)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, max97236);
+
+	max97236->regmap = regmap_init_i2c(i2c, &max97236_i2c_regmap_config);
+	if (IS_ERR(max97236->regmap)) {
+		err = PTR_ERR(max97236->regmap);
+		dev_err(&i2c->dev, "regmap_init() failed: %d\n", err);
+		return err;
+	}
+
+	err = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_max97236,
+					NULL, 0);
+	if (err)
+		goto err_regmap_free;
+
+	return 0;
+
+ err_regmap_free:
+	regmap_exit(max97236->regmap);
+
+	return err;
+}
+
+static int __devexit max97236_i2c_remove(struct i2c_client *i2c)
+{
+	struct max97236 *max97236 = i2c_get_clientdata(i2c);
+
+	snd_soc_unregister_codec(&i2c->dev);
+	regmap_exit(max97236->regmap);
+
+	return 0;
+}
+
+static const struct i2c_device_id max97236_i2c_id[] = {
+	{ "max97236", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max97236_i2c_id);
+
+static struct i2c_driver max97236_i2c_driver = {
+	.driver = {
+		.name = "max97236",
+		.owner = THIS_MODULE,
+	},
+	.probe = max97236_i2c_probe,
+	.remove = __devexit_p(max97236_i2c_remove),
+	.id_table = max97236_i2c_id,
+};
+
+static int __init max97236_init(void)
+{
+	return i2c_add_driver(&max97236_i2c_driver);
+}
+module_init(max97236_init);
+
+static void __exit max97236_exit(void)
+{
+	i2c_del_driver(&max97236_i2c_driver);
+}
+module_exit(max97236_exit);
+
+MODULE_AUTHOR("Ravindra Lokhande <rlokhande@nvidia.com>");
+MODULE_DESCRIPTION("max97236 amplifier driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/max97236.h b/sound/soc/codecs/max97236.h
new file mode 100644
index 000000000000..4168a303c0b8
--- /dev/null
+++ b/sound/soc/codecs/max97236.h
@@ -0,0 +1,300 @@
+/*
+ * max97236.h - Header file for max97236 headphone amplifier
+ *
+ * Author: Ravindra Lokhande <rlokhande@nvidia.com>
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef _MAX97236_H
+#define _MAX97236_H
+
+#include <linux/version.h>
+
+/*
+ * MAX97236 Register Definitions
+ */
+
+#define M97236_REG_00_STATUS1				0x00
+#define M97236_REG_01_STATUS2				0x01
+#define M97236_REG_02_STATUS3				0x02
+#define M97236_REG_03_FOR_EXPANSION			0x03
+#define M97236_REG_04_IRQ_MASK1				0x04
+#define M97236_REG_05_IRQ_MASK2				0x05
+#define M97236_REG_06_FOR_EXPANSION			0x06
+#define M97236_REG_07_LEFT_VOLUME			0x07
+#define M97236_REG_08_RIGHT_VOLUME			0x08
+#define M97236_REG_09_MICROPHONE			0x09
+#define M97236_REG_0A_FOR_EXPANSION			0x0A
+#define M97236_REG_0B_VENDOR_ID_REGSITER	0x0B
+#define M97236_REG_0C_FOR_EXPANSION			0x0C
+#define M97236_REG_0D_FOR_EXPANSION			0x0D
+#define M97236_REG_0E_FOR_EXPANSION			0x0E
+#define M97236_REG_0F_FOR_EXPANSION			0x0F
+#define M97236_REG_10_FOR_EXPANSION			0x10
+#define M97236_REG_11_FOR_EXPANSION			0x11
+#define M97236_REG_12_KEYSCAN_CLOCK_DIVIDER1	0x12
+#define M97236_REG_13_KEYSCAN_CLOCK_DIVIDER2	0x13
+#define M97236_REG_14_KEYSCAN_CLOCK_DIVIDER_ADC	0x14
+#define M97236_REG_15_KEYSCAN_DEBOUNCE			0x15
+#define M97236_REG_16_KEYSCAN_DELAY				0x16
+#define M97236_REG_17_PASSIVE_MBH_KEYSCAN_DATA	0x17
+#define M97236_REG_18_DC_TEST_SLEW_CONTROL		0x18
+#define M97236_REG_19_STATE_FORCING				0x19
+#define M97236_REG_1A_AC_TEST_CONTROL			0x1A
+#define M97236_REG_1B_FOR_EXPANSION				0x1B
+#define M97236_REG_1C_FOR_EXPANSION				0x1C
+#define M97236_REG_1D_ENABLE1				0x1D
+#define M97236_REG_1E_ENABLE2				0x1E
+
+/*
+ * M97236_REG_00_STATUS1
+ */
+#define M97236_ST1_JKIN_MASK		(1<<7)
+#define M97236_ST1_JKIN_SHIFT		7
+#define M97236_ST1_JKIN_WIDTH		1
+#define M97236_ST1_DDONE_MASK		(1<<6)
+#define M97236_ST1_DDONE_SHIFT		6
+#define M97236_ST1_DDONE_WIDTH		1
+#define M97236_ST1_VOL_MASK			(1<<5)
+#define M97236_ST1_VOL_SHIFT		5
+#define M97236_ST1_VOL_WIDTH		1
+#define M97236_ST1_MIC_IN_MASK		(1<<3)
+#define M97236_ST1_MIC_IN_SHIFT		3
+#define M97236_ST1_MIC_IN_WIDTH		1
+#define M97236_ST1_JACKSW_MASK		(1<<2)
+#define M97236_ST1_JACKSW_SHIFT		2
+#define M97236_ST1_JACKSW_WIDTH		1
+#define M97236_ST1_MCSW_MASK		(1<<1)
+#define M97236_ST1_MCSW_SHIFT		1
+#define M97236_ST1_MCSW_WIDTH		1
+#define M97236_ST1_MBH_MASK			(1<<0)
+#define M97236_ST1_MBH_SHIFT		0
+#define M97236_ST1_MBH_WIDTH		1
+
+/*
+ * M97236_REG_01_STATUS2
+ */
+#define M97236_ST2_LINE_L_MASK			(1<<7)
+#define M97236_ST2_LINE_L_SHIFT			7
+#define M97236_ST2_LINE_L_WIDTH			1
+#define M97236_ST2_LINE_R_MASK			(1<<6)
+#define M97236_ST2_LINE_R_SHIFT			6
+#define M97236_ST2_LINE_R_WIDTH			1
+#define M97236_ST2_HP_L_MASK			(1<<5)
+#define M97236_ST2_HP_L_SHIFT			5
+#define M97236_ST2_HP_L_WIDTH			1
+#define M97236_ST2_HP_R_MASK			(1<<4)
+#define M97236_ST2_HP_R_SHIFT			4
+#define M97236_ST2_HP_R_WIDTH			1
+#define M97236_ST2_JACKSWINC_MASK		(1<<3)
+#define M97236_ST2_JACKSWINC_SHIFT		3
+#define M97236_ST2_JACKSWINC_WIDTH		1
+#define M97236_ST2_KEY_MASK				(1<<2)
+#define M97236_ST2_KEY_SHIFT			2
+#define M97236_ST2_KEY_WIDTH			1
+
+/*
+ * M97236_REG_02_STATUS3
+ */
+#define M97236_ST3_GND_MASK		(0x3<<0)
+#define M97236_ST3_GND_SHIFT	0
+#define M97236_ST3_GND_WIDTH	2
+
+/*
+ * M97236_REG_04_IRQ_MASK1
+ */
+#define M97236_IRQ_1_IJKIN_MASK		(1<<7)
+#define M97236_IRQ_1_IJKIN_SHIFT	7
+#define M97236_IRQ_1_IJKIN_WIDTH	1
+#define M97236_IRQ_1_IDDONE_MASK	(1<<6)
+#define M97236_IRQ_1_IDDONE_SHIFT	6
+#define M97236_IRQ_1_IDDONE_WIDTH	1
+#define M97236_IRQ_1_IVOL_MASK		(1<<5)
+#define M97236_IRQ_1_IVOL_SHIFT		5
+#define M97236_IRQ_1_IVOL_WIDTH		1
+#define M97236_IRQ_1_IMIC_MASK		(1<<3)
+#define M97236_IRQ_1_IMIC_SHIFT		3
+#define M97236_IRQ_1_IMIC_WIDTH		1
+#define M97236_IRQ_1_JACKSW_MASK	(1<<2)
+#define M97236_IRQ_1_JACKSW_SHIFT	2
+#define M97236_IRQ_1_JACKSW_WIDTH	1
+#define M97236_IRQ_1_IMCSW_MASK		(1<<1)
+#define M97236_IRQ_1_IMCSW_SHIFT	1
+#define M97236_IRQ_1_IMCSW_WIDTH	1
+#define M97236_IRQ_1_IMBH_MASK		(1<<0)
+#define M97236_IRQ_1_IMBH_SHIFT		0
+#define M97236_IRQ_1_IMBH_WIDTH		1
+
+/*
+ * M97236_REG_05_IRQ_MASK2
+ */
+#define M97236_IRQ_2_ILINE_L_MASK		(1<<7)
+#define M97236_IRQ_2_ILINE_L_SHIFT		7
+#define M97236_IRQ_2_ILINE_L_WIDTH		1
+#define M97236_IRQ_2_ILINE_R_MASK		(1<<6)
+#define M97236_IRQ_2_ILINE_R_SHIFT		6
+#define M97236_IRQ_2_ILINE_R_WIDTH		1
+#define M97236_IRQ_2_IHP_L_MASK			(1<<5)
+#define M97236_IRQ_2_IHP_L_SHIFT		5
+#define M97236_IRQ_2_IHP_L_WIDTH		1
+#define M97236_IRQ_2_IHP_R_MASK			(1<<4)
+#define M97236_IRQ_2_IHP_R_SHIFT		4
+#define M97236_IRQ_2_IHP_R_WIDTH		1
+#define M97236_IRQ_2_IJACKSW_MASK		(1<<3)
+#define M97236_IRQ_2_IJACKSW_SHIFT		3
+#define M97236_IRQ_2_IJACKSW_WIDTH		1
+#define M97236_IRQ_2_IKEY_MASK			(1<<2)
+#define M97236_IRQ_2_IKEY_SHIFT			2
+#define M97236_IRQ_2_IKEY_WIDTH			1
+
+/*
+ * M97236_REG_07_LEFT_VOLUME
+ */
+#define M97236_LVOL_L_EQ_R			0x80
+#define M97236_LVOL_L_EQ_R_MASK		(1<<7)
+#define M97236_LVOL_L_EQ_R_SHIFT	7
+#define M97236_LVOL_L_EQ_R_WIDTH	1
+
+#define M97236_LVOL_MUTEL			0x40
+#define M97236_LVOL_MUTEL_MASK		(1<<6)
+#define M97236_LVOL_MUTEL_SHIFT		6
+#define M97236_LVOL_MUTEL_WIDTH		1
+#define M97236_LVOL_LVOL_MASK		(0x3F<<0)
+#define M97236_LVOL_LVOL_SHIFT		0
+#define M97236_LVOL_LVOL_WIDTH		6
+
+/*
+ * M97236_REG_08_RIGHT_VOLUME
+ */
+#define M97236_RVOL_MUTEL_MASK		(1<<6)
+#define M97236_RVOL_MUTEL_SHIFT		6
+#define M97236_RVOL_MUTEL_WIDTH		1
+#define M97236_RVOL_RVOL_MASK		(0x3F<<0)
+#define M97236_RVOL_RVOL_SHIFT		0
+#define M97236_RVOL_RVOL_WIDTH		6
+
+/*
+ * M97236_REG_09_MICROPHONE
+ */
+#define M97236_MIC_GAIN_MASK		(1<<6)
+#define M97236_MIC_GAIN_SHIFT		6
+#define M97236_MIC_GAIN_WIDTH		1
+#define M97236_MIC_MICR_MASK		(0x7<<3)
+#define M97236_MIC_MICR_SHIFT		3
+#define M97236_MIC_MICR_WIDTH		3
+#define M97236_MIC_BIAS_MASK		(1<<2)
+#define M97236_MIC_BIAS_SHIFT		2
+#define M97236_MIC_BIAS_WIDTH		1
+
+/*
+ * M97236_REG_0B_VENDOR_ID_REGSITER
+ */
+#define M97236_VID_ID_MASK		(0xF<<4)
+#define M97236_VID_ID_SHIFT		4
+#define M97236_VID_ID_WIDTH		4
+
+/*
+ * M97236_REG_19_STATE_FORCING
+ */
+#define M97236_ST_FORCEFORCE_MASK		(1<<5)
+#define M97236_ST_FORCEFORCE_SHIFT		5
+#define M97236_ST_FORCEFORCE_WIDTH		1
+#define M97236_ST_FORCESTATE_MASK		(0xF<<1)
+#define M97236_ST_FORCESTATE_SHIFT		1
+#define M97236_ST_FORCESTATE_WIDTH		4
+
+/*
+ * M97236_REG_1A_AC_TEST_CONTROL
+ */
+#define M97236_AC_TC_AC_REPEAT_MASK		(0x3<<4)
+#define M97236_AC_TC_AC_REPEAT_SHIFT	4
+#define M97236_AC_TC_AC_REPEAT_WIDTH	2
+#define M97236_AC_TC_PULSE_WIDTH_MASK	(0x3<<2)
+#define M97236_AC_TC_PULSE_WIDTH_SHIFT	2
+#define M97236_AC_TC_PULSE_WIDTH_WIDTH	2
+#define M97236_AC_TC_PULSE_AMP_MASK		(0x3<<0)
+#define M97236_AC_TC_PULSE_AMP_SHIFT	0
+#define M97236_AC_TC_PULSE_AMP_WIDTH	2
+
+/*
+ * M97236_REG_1D_ENABLE1
+ */
+#define M97236_EN1_SHDN				0x80
+#define M97236_EN1_SHDN_MASK		(1<<7)
+#define M97236_EN1_SHDN_SHIFT		7
+#define M97236_EN1_SHDN_WIDTH		1
+
+#define M97236_EN1_RESET			0x40
+#define M97236_EN1_RESET_MASK		(1<<6)
+#define M97236_EN1_RESET_SHIFT		6
+#define M97236_EN1_RESET_WIDTH		1
+
+#define M97236_EN1_MIC_BIAS			0x10
+#define M97236_EN1_MIC_BIAS_MASK	(1<<4)
+#define M97236_EN1_MIC_BIAS_SHIFT	4
+#define M97236_EN1_MIC_BIAS_WIDTH	1
+
+#define M97236_EN1_MIC_AMP			0x8
+#define M97236_EN1_MIC_AMP_MASK		(1<<3)
+#define M97236_EN1_MIC_AMP_SHIFT	3
+#define M97236_EN1_MIC_AMP_WIDTH	1
+
+#define M97236_EN1_KS				0x4
+#define M97236_EN1_KS_MASK			(1<<2)
+#define M97236_EN1_KS_SHIFT			2
+#define M97236_EN1_KS_WIDTH			1
+
+/*
+ * M97236_REG_1E_ENABLE2
+ */
+#define M97236_EN2_LFTEN			0x80
+#define M97236_EN2_LFTEN_MASK		(1<<7)
+#define M97236_EN2_LFTEN_SHIFT		7
+#define M97236_EN2_LFTEN_WIDTH		1
+
+#define M97236_EN2_RGHEN			0x40
+#define M97236_EN2_RGHEN_MASK		(1<<6)
+#define M97236_EN2_RGHEN_SHIFT		6
+#define M97236_EN2_RGHEN_WIDTH		1
+
+#define M97236_EN2_VSEN				0x20
+#define M97236_EN2_VSEN_MASK		(1<<5)
+#define M97236_EN2_VSEN_SHIFT		5
+#define M97236_EN2_VSEN_WIDTH		1
+
+#define M97236_EN2_ZDEN				0x10
+#define M97236_EN2_ZDEN_MASK		(1<<4)
+#define M97236_EN2_ZDEN_SHIFT		4
+#define M97236_EN2_ZDEN_WIDTH		1
+
+#define M97236_EN2_FAST				0x8
+#define M97236_EN2_FAST_MASK		(1<<3)
+#define M97236_EN2_FAST_SHIFT		3
+#define M97236_EN2_FAST_WIDTH		1
+
+#define M97236_EN2_THRH				0x4
+#define M97236_EN2_THRH_MASK		(1<<2)
+#define M97236_EN2_THRH_SHIFT		2
+#define M97236_EN2_THRH_WIDTH		1
+
+#define M97236_EN2_AUTO
+#define M97236_EN2_AUTO_MASK		(0x3<<0)
+#define M97236_EN2_AUTO_SHIFT		0
+#define M97236_EN2_AUTO_WIDTH		2
+
+#endif