path: root/sound/soc/codecs/sirf-audio-codec.c

/*
 * SiRF audio codec driver
 *
 * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
 *
 * Licensed under GPLv2 or later.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>

#include "sirf-audio-codec.h"

struct sirf_audio_codec {
	struct clk *clk;
	struct regmap *regmap;
	u32 reg_ctrl0, reg_ctrl1;
};

static const char * const input_mode_mux[] = {"Single-ended",
	"Differential"};

static const struct soc_enum input_mode_mux_enum =
	SOC_ENUM_SINGLE(AUDIO_IC_CODEC_CTRL1, 4, 2, input_mode_mux);

static const struct snd_kcontrol_new sirf_audio_codec_input_mode_control =
	SOC_DAPM_ENUM("Route", input_mode_mux_enum);

static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -12400, 100, 0);
static const DECLARE_TLV_DB_SCALE(capture_vol_tlv_prima2, 500, 100, 0);
static const DECLARE_TLV_DB_RANGE(capture_vol_tlv_atlas6,
	0, 7, TLV_DB_SCALE_ITEM(-100, 100, 0),
	0x22, 0x3F, TLV_DB_SCALE_ITEM(700, 100, 0),
);

static struct snd_kcontrol_new volume_controls_atlas6[] = {
	SOC_DOUBLE_TLV("Playback Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
			0x7F, 0, playback_vol_tlv),
	SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 16, 10,
			0x3F, 0, capture_vol_tlv_atlas6),
};

static struct snd_kcontrol_new volume_controls_prima2[] = {
	SOC_DOUBLE_TLV("Speaker Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
			0x7F, 0, playback_vol_tlv),
	SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 15, 10,
			0x1F, 0, capture_vol_tlv_prima2),
};

static struct snd_kcontrol_new left_input_path_controls[] = {
	SOC_DAPM_SINGLE("Line Left Switch", AUDIO_IC_CODEC_CTRL1, 6, 1, 0),
	SOC_DAPM_SINGLE("Mic Left Switch", AUDIO_IC_CODEC_CTRL1, 3, 1, 0),
};

static struct snd_kcontrol_new right_input_path_controls[] = {
	SOC_DAPM_SINGLE("Line Right Switch", AUDIO_IC_CODEC_CTRL1, 5, 1, 0),
	SOC_DAPM_SINGLE("Mic Right Switch", AUDIO_IC_CODEC_CTRL1, 2, 1, 0),
};

static struct snd_kcontrol_new left_dac_to_hp_left_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 9, 1, 0);

static struct snd_kcontrol_new left_dac_to_hp_right_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 8, 1, 0);

static struct snd_kcontrol_new right_dac_to_hp_left_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 7, 1, 0);

static struct snd_kcontrol_new right_dac_to_hp_right_amp_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 6, 1, 0);

static struct snd_kcontrol_new left_dac_to_speaker_lineout_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 11, 1, 0);

static struct snd_kcontrol_new right_dac_to_speaker_lineout_switch_control =
	SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 10, 1, 0);

/* After enable adc, Delay 200ms to avoid pop noise */
static int adc_enable_delay_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		msleep(200);
		break;
	default:
		break;
	}

	return 0;
}

static void enable_and_reset_codec(struct regmap *regmap,
		u32 codec_enable_bits, u32 codec_reset_bits)
{
	regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
			codec_enable_bits | codec_reset_bits,
			codec_enable_bits | ~codec_reset_bits);
	msleep(20);
	regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
			codec_reset_bits, codec_reset_bits);
}

static int atlas6_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
#define ATLAS6_CODEC_ENABLE_BITS (1 << 29)
#define ATLAS6_CODEC_RESET_BITS (1 << 28)
	struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(w->codec->dev);
	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		enable_and_reset_codec(sirf_audio_codec->regmap,
			ATLAS6_CODEC_ENABLE_BITS, ATLAS6_CODEC_RESET_BITS);
		break;
	case SND_SOC_DAPM_POST_PMD:
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_IC_CODEC_CTRL1, ATLAS6_CODEC_ENABLE_BITS,
			~ATLAS6_CODEC_ENABLE_BITS);
		break;
	default:
		break;
	}

	return 0;
}

static int prima2_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
#define PRIMA2_CODEC_ENABLE_BITS (1 << 27)
#define PRIMA2_CODEC_RESET_BITS (1 << 26)
	struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(w->codec->dev);
	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		enable_and_reset_codec(sirf_audio_codec->regmap,
			PRIMA2_CODEC_ENABLE_BITS, PRIMA2_CODEC_RESET_BITS);
		break;
	case SND_SOC_DAPM_POST_PMD:
		regmap_update_bits(sirf_audio_codec->regmap,
			AUDIO_IC_CODEC_CTRL1, PRIMA2_CODEC_ENABLE_BITS,
			~PRIMA2_CODEC_ENABLE_BITS);
		break;
	default:
		break;
	}

	return 0;
}

static const struct snd_soc_dapm_widget atlas6_output_driver_dapm_widgets[] = {
	SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
			25, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
			26, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
			27, 0, NULL, 0),
};

static const struct snd_soc_dapm_widget prima2_output_driver_dapm_widgets[] = {
	SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
			23, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
			24, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
			25, 0, NULL, 0),
};

static const struct snd_soc_dapm_widget atlas6_codec_clock_dapm_widget =
	SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
			atlas6_codec_enable_and_reset_event,
			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);

static const struct snd_soc_dapm_widget prima2_codec_clock_dapm_widget =
	SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
			prima2_codec_enable_and_reset_event,
			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);

static const struct snd_soc_dapm_widget sirf_audio_codec_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC left", NULL, AUDIO_IC_CODEC_CTRL0, 1, 0),
	SND_SOC_DAPM_DAC("DAC right", NULL, AUDIO_IC_CODEC_CTRL0, 0, 0),
	SND_SOC_DAPM_SWITCH("Left dac to hp left amp", SND_SOC_NOPM, 0, 0,
			&left_dac_to_hp_left_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Left dac to hp right amp", SND_SOC_NOPM, 0, 0,
			&left_dac_to_hp_right_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to hp left amp", SND_SOC_NOPM, 0, 0,
			&right_dac_to_hp_left_amp_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to hp right amp", SND_SOC_NOPM, 0, 0,
			&right_dac_to_hp_right_amp_switch_control),
	SND_SOC_DAPM_OUT_DRV("HP amp left driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
			NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HP amp right driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
			NULL, 0),

	SND_SOC_DAPM_SWITCH("Left dac to speaker lineout", SND_SOC_NOPM, 0, 0,
			&left_dac_to_speaker_lineout_switch_control),
	SND_SOC_DAPM_SWITCH("Right dac to speaker lineout", SND_SOC_NOPM, 0, 0,