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"

enum twl6040_dai_id {
	TWL6040_DAI_LEGACY = 0,
	TWL6040_DAI_UL,
	TWL6040_DAI_DL1,
	TWL6040_DAI_DL2,
	TWL6040_DAI_VIB,
};

#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

#define TWL6040_CACHEREGNUM	(TWL6040_REG_STATUS + 1)

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;
	bool dl1_unmuted;
	bool dl2_unmuted;
	u8 dl12_cache[TWL6040_REG_HFRCTL - TWL6040_REG_HSLCTL + 1];
	unsigned int clk_in;
	unsigned int sysclk;
	struct twl6040_jack_data hs_jack;
	struct snd_soc_codec *codec;
	struct mutex mutex;
};

/* set of rates for each pll: low-power and high-performance */
static const unsigned int lp_rates[] = {
	8000,
	11250,
	16000,
	22500,
	32000,
	44100,
	48000,
	88200,
	96000,
};

static const unsigned int hp_rates[] = {
	8000,
	16000,
	32000,
	48000,
	96000,
};

static const struct snd_pcm_hw_constraint_list sysclk_constraints[] = {
	{ .count = ARRAY_SIZE(lp_rates), .list = lp_rates, },
	{ .count = ARRAY_SIZE(hp_rates), .list = hp_rates, },
};

static unsigned int twl6040_read(struct snd_soc_codec *codec, unsigned int reg)
{
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	struct twl6040 *twl6040 = codec->control_data;
	u8 value;

	if (reg >= TWL6040_CACHEREGNUM)
		return -EIO;

	switch (reg) {
	case TWL6040_REG_HSLCTL:
	case TWL6040_REG_HSRCTL:
	case TWL6040_REG_EARCTL:
	case TWL6040_REG_HFLCTL:
	case TWL6040_REG_HFRCTL:
		value = priv->dl12_cache[reg - TWL6040_REG_HSLCTL];
		break;
	default:
		value = twl6040_reg_read(twl6040, reg);
		break;
	}

	return value;
}

static bool twl6040_can_write_to_chip(struct snd_soc_codec *codec,
				  unsigned int reg)
{
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	switch (reg) {
	case