path: root/sound/soc/codecs/twl4030.c

/*
 * ALSA SoC TWL4030 codec driver
 *
 * Author:      Steve Sakoman, <steve@sakoman.com>
 *
 * 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/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl4030.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "twl4030.h"

/*
 * twl4030 register cache & default register settings
 */
static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
	0x00, /* this register not used		*/
	0x93, /* REG_CODEC_MODE		(0x1)	*/
	0xc3, /* REG_OPTION		(0x2)	*/
	0x00, /* REG_UNKNOWN		(0x3)	*/
	0x00, /* REG_MICBIAS_CTL	(0x4)	*/
	0x20, /* REG_ANAMICL		(0x5)	*/
	0x00, /* REG_ANAMICR		(0x6)	*/
	0x00, /* REG_AVADC_CTL		(0x7)	*/
	0x00, /* REG_ADCMICSEL		(0x8)	*/
	0x00, /* REG_DIGMIXING		(0x9)	*/
	0x0c, /* REG_ATXL1PGA		(0xA)	*/
	0x0c, /* REG_ATXR1PGA		(0xB)	*/
	0x00, /* REG_AVTXL2PGA		(0xC)	*/
	0x00, /* REG_AVTXR2PGA		(0xD)	*/
	0x01, /* REG_AUDIO_IF		(0xE)	*/
	0x00, /* REG_VOICE_IF		(0xF)	*/
	0x00, /* REG_ARXR1PGA		(0x10)	*/
	0x00, /* REG_ARXL1PGA		(0x11)	*/
	0x6c, /* REG_ARXR2PGA		(0x12)	*/
	0x6c, /* REG_ARXL2PGA		(0x13)	*/
	0x00, /* REG_VRXPGA		(0x14)	*/
	0x00, /* REG_VSTPGA		(0x15)	*/
	0x00, /* REG_VRX2ARXPGA		(0x16)	*/
	0x0c, /* REG_AVDAC_CTL		(0x17)	*/
	0x00, /* REG_ARX2VTXPGA		(0x18)	*/
	0x00, /* REG_ARXL1_APGA_CTL	(0x19)	*/
	0x00, /* REG_ARXR1_APGA_CTL	(0x1A)	*/
	0x4b, /* REG_ARXL2_APGA_CTL	(0x1B)	*/
	0x4b, /* REG_ARXR2_APGA_CTL	(0x1C)	*/
	0x00, /* REG_ATX2ARXPGA		(0x1D)	*/
	0x00, /* REG_BT_IF		(0x1E)	*/
	0x00, /* REG_BTPGA		(0x1F)	*/
	0x00, /* REG_BTSTPGA		(0x20)	*/
	0x00, /* REG_EAR_CTL		(0x21)	*/
	0x24, /* REG_HS_SEL		(0x22)	*/
	0x0a, /* REG_HS_GAIN_SET	(0x23)	*/
	0x00, /* REG_HS_POPN_SET	(0x24)	*/
	0x00, /* REG_PREDL_CTL		(0x25)	*/
	0x00, /* REG_PREDR_CTL		(0x26)	*/
	0x00, /* REG_PRECKL_CTL		(0x27)	*/
	0x00, /* REG_PRECKR_CTL		(0x28)	*/
	0x00, /* REG_HFL_CTL		(0x29)	*/
	0x00, /* REG_HFR_CTL		(0x2A)	*/
	0x00, /* REG_ALC_CTL		(0x2B)	*/
	0x00, /* REG_ALC_SET1		(0x2C)	*/
	0x00, /* REG_ALC_SET2		(0x2D)	*/
	0x00, /* REG_BOOST_CTL		(0x2E)	*/
	0x00, /* REG_SOFTVOL_CTL	(0x2F)	*/
	0x00, /* REG_DTMF_FREQSEL	(0x30)	*/
	0x00, /* REG_DTMF_TONEXT1H	(0x31)	*/
	0x00, /* REG_DTMF_TONEXT1L	(0x32)	*/
	0x00, /* REG_DTMF_TONEXT2H	(0x33)	*/
	0x00, /* REG_DTMF_TONEXT2L	(0x34)	*/
	0x00, /* REG_DTMF_TONOFF	(0x35)	*/
	0x00, /* REG_DTMF_WANONOFF	(0x36)	*/
	0x00, /* REG_I2S_RX_SCRAMBLE_H	(0x37)	*/
	0x00, /* REG_I2S_RX_SCRAMBLE_M	(0x38)	*/
	0x00, /* REG_I2S_RX_SCRAMBLE_L	(0x39)	*/
	0x16, /* REG_APLL_CTL		(0x3A)	*/
	0x00, /* REG_DTMF_CTL		(0x3B)	*/
	0x00, /* REG_DTMF_PGA_CTL2	(0x3C)	*/
	0x00, /* REG_DTMF_PGA_CTL1	(0x3D)	*/
	0x00, /* REG_MISC_SET_1		(0x3E)	*/
	0x00, /* REG_PCMBTMUX		(0x3F)	*/
	0x00, /* not used		(0x40)	*/
	0x00, /* not used		(0x41)	*/
	0x00, /* not used		(0x42)	*/
	0x00, /* REG_RX_PATH_SEL	(0x43)	*/
	0x00, /* REG_VDL_APGA_CTL	(0x44)	*/
	0x00, /* REG_VIBRA_CTL		(0x45)	*/
	0x00, /* REG_VIBRA_SET		(0x46)	*/
	0x00, /* REG_VIBRA_PWM_SET	(0x47)	*/
	0x00, /* REG_ANAMIC_GAIN	(0x48)	*/
	0x00, /* REG_MISC_SET_2		(0x49)	*/
};

/*
 * read twl4030 register cache
 */
static inline unsigned int twl4030_read_reg_cache(struct snd_soc_codec *codec,
	unsigned int reg)
{
	u8 *cache = codec->reg_cache;

	return cache[reg];
}

/*
 * write twl4030 register cache
 */
static inline void twl4030_write_reg_cache(struct snd_soc_codec *codec,
						u8 reg, u8 value)
{
	u8 *cache = codec->reg_cache;

	if (reg >= TWL4030_CACHEREGNUM)
		return;
	cache[reg] = value;
}

/*
 * write to the twl4030 register space
 */
static int twl4030_write(struct snd_soc_codec *codec,
			unsigned int reg, unsigned int value)
{
	twl4030_write_reg_cache(codec, reg, value);
	return twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
}

static void twl4030_clea