path: root/sound/soc/codecs/twl6040.c

/*
 * ALSA SoC TWL6040 codec driver
 *
 * Author:	 Misael Lopez Cruz <x0052729@ti.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/platform_device.h>
#include <linux/slab.h>
#include <linux/mfd/twl6040.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 "twl6040.h"

#define TWL6040_RATES		SNDRV_PCM_RATE_8000_96000
#define TWL6040_FORMATS	(SNDRV_PCM_FMTBIT_S32_LE)

#define TWL6040_OUTHS_0dB 0x00
#define TWL6040_OUTHS_M30dB 0x0F
#define TWL6040_OUTHF_0dB 0x03
#define TWL6040_OUTHF_M52dB 0x1D

/* Shadow register used by the driver */
#define TWL6040_REG_SW_SHADOW	0x2F
#define TWL6040_CACHEREGNUM	(TWL6040_REG_SW_SHADOW + 1)

/* TWL6040_REG_SW_SHADOW (0x2F) fields */
#define TWL6040_EAR_PATH_ENABLE	0x01

struct twl6040_jack_data {
	struct snd_soc_jack *jack;
	struct delayed_work work;
	int report;
};

/* codec private data */
struct twl6040_data {
	int plug_irq;
	int codec_powered;
	int pll;
	int pll_power_mode;
	int hs_power_mode;
	int hs_power_mode_locked;
	unsigned int clk_in;
	unsigned int sysclk;
	u16 hs_left_step;
	u16 hs_right_step;
	u16 hf_left_step;
	u16 hf_right_step;
	struct twl6040_jack_data hs_jack;
	struct snd_soc_codec *codec;
	struct workqueue_struct *workqueue;
	struct mutex mutex;
};

/*
 * twl6040 register cache & default register settings
 */
static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
	0x00, /* not used	0x00	*/
	0x4B, /* REG_ASICID	0x01 (ro) */
	0x00, /* REG_ASICREV	0x02 (ro) */
	0x00, /* REG_INTID	0x03	*/
	0x00, /* REG_INTMR	0x04	*/
	0x00, /* REG_NCPCTRL	0x05	*/
	0x00, /* REG_LDOCTL	0x06	*/
	0x60, /* REG_HPPLLCTL	0x07	*/
	0x00, /* REG_LPPLLCTL	0x08	*/
	0x4A, /* REG_LPPLLDIV	0x09	*/
	0x00, /* REG_AMICBCTL	0x0A	*/
	0x00, /* REG_DMICBCTL	0x0B	*/
	0x00, /* REG_MICLCTL	0x0C	*/
	0x00, /* REG_MICRCTL	0x0D	*/
	0x00, /* REG_MICGAIN	0x0E	*/
	0x1B, /* REG_LINEGAIN	0x0F	*/
	0x00, /* REG_HSLCTL	0x10	*/
	0x00, /* REG_HSRCTL	0x11	*/
	0x00, /* REG_HSGAIN	0x12	*/
	0x00, /* REG_EARCTL	0x13	*/
	0x00, /* REG_HFLCTL	0x14	*/
	0x00, /* REG_HFLGAIN	0x15	*/
	0x00, /* REG_HFRCTL	0x16	*/
	0x00, /* REG_HFRGAIN	0x17	*/
	0x00, /* REG_VIBCTLL	0x18	*/
	0x00, /* REG_VIBDATL	0x19	*/
	0x00, /* REG_VIBCTLR	0x1A	*/
	0x00, /* REG_VIBDATR	0x1B	*/
	0x00, /* REG_HKCTL1	0x1C	*/
	0x00, /* REG_HKCTL2	0x1D	*/
	0x00, /* REG_GPOCTL	0x1E	*/
	0x00, /* REG_ALB	0x1F	*/
	0x00, /* REG_DLB	0x20	*/
	0x00, /* not used	0x21	*/
	0x00, /* not used	0x22	*/
	0x00, /* not used	0x23	*/
	0x00, /* not used	0x24	*/
	0x00, /* not used	0x25	*/
	0x00, /* not used	0x26	*/
	0x00, /* not used	0x27	*/
	0x00, /* REG_TRIM1	0x28	*/