627 lines
15 KiB
C
627 lines
15 KiB
C
/*
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* ak4613.c -- Asahi Kasei ALSA Soc Audio driver
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*
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* Copyright (C) 2015 Renesas Electronics Corporation
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* Based on ak4642.c by Kuninori Morimoto
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* Based on wm8731.c by Richard Purdie
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* Based on ak4535.c by Richard Purdie
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* Based on wm8753.c by Liam Girdwood
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/of_device.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include <sound/pcm_params.h>
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#include <sound/tlv.h>
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#define PW_MGMT1 0x00 /* Power Management 1 */
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#define PW_MGMT2 0x01 /* Power Management 2 */
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#define PW_MGMT3 0x02 /* Power Management 3 */
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#define CTRL1 0x03 /* Control 1 */
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#define CTRL2 0x04 /* Control 2 */
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#define DEMP1 0x05 /* De-emphasis1 */
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#define DEMP2 0x06 /* De-emphasis2 */
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#define OFD 0x07 /* Overflow Detect */
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#define ZRD 0x08 /* Zero Detect */
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#define ICTRL 0x09 /* Input Control */
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#define OCTRL 0x0a /* Output Control */
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#define LOUT1 0x0b /* LOUT1 Volume Control */
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#define ROUT1 0x0c /* ROUT1 Volume Control */
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#define LOUT2 0x0d /* LOUT2 Volume Control */
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#define ROUT2 0x0e /* ROUT2 Volume Control */
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#define LOUT3 0x0f /* LOUT3 Volume Control */
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#define ROUT3 0x10 /* ROUT3 Volume Control */
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#define LOUT4 0x11 /* LOUT4 Volume Control */
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#define ROUT4 0x12 /* ROUT4 Volume Control */
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#define LOUT5 0x13 /* LOUT5 Volume Control */
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#define ROUT5 0x14 /* ROUT5 Volume Control */
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#define LOUT6 0x15 /* LOUT6 Volume Control */
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#define ROUT6 0x16 /* ROUT6 Volume Control */
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/* PW_MGMT1 */
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#define RSTN BIT(0)
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#define PMDAC BIT(1)
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#define PMADC BIT(2)
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#define PMVR BIT(3)
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/* PW_MGMT2 */
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#define PMAD_ALL 0x7
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/* PW_MGMT3 */
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#define PMDA_ALL 0x3f
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/* CTRL1 */
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#define DIF0 BIT(3)
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#define DIF1 BIT(4)
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#define DIF2 BIT(5)
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#define TDM0 BIT(6)
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#define TDM1 BIT(7)
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#define NO_FMT (0xff)
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#define FMT_MASK (0xf8)
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/* CTRL2 */
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#define DFS_MASK (3 << 2)
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#define DFS_NORMAL_SPEED (0 << 2)
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#define DFS_DOUBLE_SPEED (1 << 2)
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#define DFS_QUAD_SPEED (2 << 2)
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/* ICTRL */
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#define ICTRL_MASK (0x3)
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/* OCTRL */
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#define OCTRL_MASK (0x3F)
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struct ak4613_formats {
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unsigned int width;
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unsigned int fmt;
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};
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struct ak4613_interface {
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struct ak4613_formats capture;
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struct ak4613_formats playback;
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};
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struct ak4613_priv {
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struct mutex lock;
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const struct ak4613_interface *iface;
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struct snd_pcm_hw_constraint_list constraint;
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unsigned int sysclk;
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unsigned int fmt;
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u8 oc;
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u8 ic;
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int cnt;
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};
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/*
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* Playback Volume
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*
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* max : 0x00 : 0 dB
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* ( 0.5 dB step )
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* min : 0xFE : -127.0 dB
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* mute: 0xFF
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*/
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static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
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static const struct snd_kcontrol_new ak4613_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
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0, 0xFF, 1, out_tlv),
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SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
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0, 0xFF, 1, out_tlv),
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SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
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0, 0xFF, 1, out_tlv),
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SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
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0, 0xFF, 1, out_tlv),
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SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
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0, 0xFF, 1, out_tlv),
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SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
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0, 0xFF, 1, out_tlv),
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};
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static const struct reg_default ak4613_reg[] = {
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{ 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
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{ 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
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{ 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
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{ 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
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{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
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{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
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};
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#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
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#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
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static const struct ak4613_interface ak4613_iface[] = {
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/* capture */ /* playback */
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/* [0] - [2] are not supported */
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[3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
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[4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
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};
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static const struct regmap_config ak4613_regmap_cfg = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 0x16,
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.reg_defaults = ak4613_reg,
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.num_reg_defaults = ARRAY_SIZE(ak4613_reg),
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.cache_type = REGCACHE_RBTREE,
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};
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static const struct of_device_id ak4613_of_match[] = {
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{ .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
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{},
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};
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MODULE_DEVICE_TABLE(of, ak4613_of_match);
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static const struct i2c_device_id ak4613_i2c_id[] = {
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{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
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static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
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/* Outputs */
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SND_SOC_DAPM_OUTPUT("LOUT1"),
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SND_SOC_DAPM_OUTPUT("LOUT2"),
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SND_SOC_DAPM_OUTPUT("LOUT3"),
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SND_SOC_DAPM_OUTPUT("LOUT4"),
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SND_SOC_DAPM_OUTPUT("LOUT5"),
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SND_SOC_DAPM_OUTPUT("LOUT6"),
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SND_SOC_DAPM_OUTPUT("ROUT1"),
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SND_SOC_DAPM_OUTPUT("ROUT2"),
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SND_SOC_DAPM_OUTPUT("ROUT3"),
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SND_SOC_DAPM_OUTPUT("ROUT4"),
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SND_SOC_DAPM_OUTPUT("ROUT5"),
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SND_SOC_DAPM_OUTPUT("ROUT6"),
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/* Inputs */
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SND_SOC_DAPM_INPUT("LIN1"),
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SND_SOC_DAPM_INPUT("LIN2"),
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SND_SOC_DAPM_INPUT("RIN1"),
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SND_SOC_DAPM_INPUT("RIN2"),
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/* DAC */
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SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
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SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
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SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
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SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
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SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
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SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
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/* ADC */
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SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
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SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
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};
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static const struct snd_soc_dapm_route ak4613_intercon[] = {
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{"LOUT1", NULL, "DAC1"},
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{"LOUT2", NULL, "DAC2"},
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{"LOUT3", NULL, "DAC3"},
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{"LOUT4", NULL, "DAC4"},
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{"LOUT5", NULL, "DAC5"},
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{"LOUT6", NULL, "DAC6"},
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{"ROUT1", NULL, "DAC1"},
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{"ROUT2", NULL, "DAC2"},
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{"ROUT3", NULL, "DAC3"},
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{"ROUT4", NULL, "DAC4"},
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{"ROUT5", NULL, "DAC5"},
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{"ROUT6", NULL, "DAC6"},
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{"DAC1", NULL, "Playback"},
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{"DAC2", NULL, "Playback"},
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{"DAC3", NULL, "Playback"},
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{"DAC4", NULL, "Playback"},
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{"DAC5", NULL, "Playback"},
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{"DAC6", NULL, "Playback"},
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{"Capture", NULL, "ADC1"},
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{"Capture", NULL, "ADC2"},
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{"ADC1", NULL, "LIN1"},
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{"ADC2", NULL, "LIN2"},
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{"ADC1", NULL, "RIN1"},
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{"ADC2", NULL, "RIN2"},
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};
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static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
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struct device *dev = codec->dev;
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mutex_lock(&priv->lock);
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priv->cnt--;
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if (priv->cnt < 0) {
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dev_err(dev, "unexpected counter error\n");
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priv->cnt = 0;
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}
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if (!priv->cnt)
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priv->iface = NULL;
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mutex_unlock(&priv->lock);
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}
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static void ak4613_hw_constraints(struct ak4613_priv *priv,
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struct snd_pcm_runtime *runtime)
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{
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static const unsigned int ak4613_rates[] = {
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32000,
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44100,
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48000,
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64000,
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88200,
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96000,
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176400,
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192000,
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};
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struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
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unsigned int fs;
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int i;
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constraint->list = ak4613_rates;
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constraint->mask = 0;
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constraint->count = 0;
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/*
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* Slave Mode
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* Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
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* Double: [64kHz, 96kHz] : 256fs
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* Quad : [128kHz,192kHz]: 128fs
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*
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* Master mode
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* Normal: [32kHz, 48kHz] : 256fs or 512fs
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* Double: [64kHz, 96kHz] : 256fs
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* Quad : [128kHz,192kHz]: 128fs
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*/
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for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
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/* minimum fs on each range */
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fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
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if (priv->sysclk >= ak4613_rates[i] * fs)
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constraint->count = i + 1;
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}
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snd_pcm_hw_constraint_list(runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, constraint);
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}
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static int ak4613_dai_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
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priv->cnt++;
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ak4613_hw_constraints(priv, substream->runtime);
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return 0;
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}
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static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
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priv->sysclk = freq;
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return 0;
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}
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static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
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fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
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switch (fmt) {
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case SND_SOC_DAIFMT_LEFT_J:
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case SND_SOC_DAIFMT_I2S:
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priv->fmt = fmt;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
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int is_play,
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unsigned int fmt, unsigned int width)
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{
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const struct ak4613_formats *fmts;
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fmts = (is_play) ? &iface->playback : &iface->capture;
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if (fmts->fmt != fmt)
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return false;
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if (fmts->width != width)
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return false;
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return true;
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}
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static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
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const struct ak4613_interface *iface;
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struct device *dev = codec->dev;
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unsigned int width = params_width(params);
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unsigned int fmt = priv->fmt;
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unsigned int rate;
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int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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int i, ret;
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u8 fmt_ctrl, ctrl2;
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rate = params_rate(params);
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switch (rate) {
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case 32000:
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case 44100:
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case 48000:
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ctrl2 = DFS_NORMAL_SPEED;
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break;
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case 64000:
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case 88200:
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case 96000:
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ctrl2 = DFS_DOUBLE_SPEED;
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break;
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case 176400:
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case 192000:
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ctrl2 = DFS_QUAD_SPEED;
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break;
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default:
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return -EINVAL;
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}
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/*
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* FIXME
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*
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* It doesn't support TDM at this point
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*/
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fmt_ctrl = NO_FMT;
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ret = -EINVAL;
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iface = NULL;
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mutex_lock(&priv->lock);
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if (priv->iface) {
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if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
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iface = priv->iface;
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} else {
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for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
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if (!ak4613_dai_fmt_matching(ak4613_iface + i,
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is_play,
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fmt, width))
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continue;
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iface = ak4613_iface + i;
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break;
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}
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}
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if ((priv->iface == NULL) ||
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(priv->iface == iface)) {
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priv->iface = iface;
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ret = 0;
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}
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mutex_unlock(&priv->lock);
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if (ret < 0)
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goto hw_params_end;
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fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
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snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
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snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
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snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic);
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snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc);
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hw_params_end:
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if (ret < 0)
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dev_warn(dev, "unsupported data width/format combination\n");
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return ret;
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}
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static int ak4613_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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u8 mgmt1 = 0;
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switch (level) {
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case SND_SOC_BIAS_ON:
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mgmt1 |= RSTN;
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/* fall through */
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case SND_SOC_BIAS_PREPARE:
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mgmt1 |= PMADC | PMDAC;
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/* fall through */
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case SND_SOC_BIAS_STANDBY:
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mgmt1 |= PMVR;
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/* fall through */
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case SND_SOC_BIAS_OFF:
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default:
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break;
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}
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snd_soc_write(codec, PW_MGMT1, mgmt1);
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return 0;
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}
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static const struct snd_soc_dai_ops ak4613_dai_ops = {
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.startup = ak4613_dai_startup,
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.shutdown = ak4613_dai_shutdown,
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.set_sysclk = ak4613_dai_set_sysclk,
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.set_fmt = ak4613_dai_set_fmt,
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.hw_params = ak4613_dai_hw_params,
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};
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#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
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SNDRV_PCM_RATE_44100 |\
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SNDRV_PCM_RATE_48000 |\
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SNDRV_PCM_RATE_64000 |\
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SNDRV_PCM_RATE_88200 |\
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SNDRV_PCM_RATE_96000 |\
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SNDRV_PCM_RATE_176400 |\
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SNDRV_PCM_RATE_192000)
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#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
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static struct snd_soc_dai_driver ak4613_dai = {
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.name = "ak4613-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = AK4613_PCM_RATE,
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.formats = AK4613_PCM_FMTBIT,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = AK4613_PCM_RATE,
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.formats = AK4613_PCM_FMTBIT,
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},
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.ops = &ak4613_dai_ops,
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.symmetric_rates = 1,
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};
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static int ak4613_suspend(struct snd_soc_codec *codec)
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{
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struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
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regcache_cache_only(regmap, true);
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regcache_mark_dirty(regmap);
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return 0;
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}
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static int ak4613_resume(struct snd_soc_codec *codec)
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{
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struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
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regcache_cache_only(regmap, false);
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return regcache_sync(regmap);
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}
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static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
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.suspend = ak4613_suspend,
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.resume = ak4613_resume,
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.set_bias_level = ak4613_set_bias_level,
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.component_driver = {
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.controls = ak4613_snd_controls,
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.num_controls = ARRAY_SIZE(ak4613_snd_controls),
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.dapm_widgets = ak4613_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
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.dapm_routes = ak4613_intercon,
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.num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
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},
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};
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|
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static void ak4613_parse_of(struct ak4613_priv *priv,
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|
struct device *dev)
|
|
{
|
|
struct device_node *np = dev->of_node;
|
|
char prop[32];
|
|
int i;
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|
|
|
/* Input 1 - 2 */
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|
for (i = 0; i < 2; i++) {
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snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
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if (!of_get_property(np, prop, NULL))
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|
priv->ic |= 1 << i;
|
|
}
|
|
|
|
/* Output 1 - 6 */
|
|
for (i = 0; i < 6; i++) {
|
|
snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
|
|
if (!of_get_property(np, prop, NULL))
|
|
priv->oc |= 1 << i;
|
|
}
|
|
}
|
|
|
|
static int ak4613_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &i2c->dev;
|
|
struct device_node *np = dev->of_node;
|
|
const struct regmap_config *regmap_cfg;
|
|
struct regmap *regmap;
|
|
struct ak4613_priv *priv;
|
|
|
|
regmap_cfg = NULL;
|
|
if (np) {
|
|
const struct of_device_id *of_id;
|
|
|
|
of_id = of_match_device(ak4613_of_match, dev);
|
|
if (of_id)
|
|
regmap_cfg = of_id->data;
|
|
} else {
|
|
regmap_cfg = (const struct regmap_config *)id->driver_data;
|
|
}
|
|
|
|
if (!regmap_cfg)
|
|
return -EINVAL;
|
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
ak4613_parse_of(priv, dev);
|
|
|
|
priv->iface = NULL;
|
|
priv->cnt = 0;
|
|
priv->sysclk = 0;
|
|
|
|
mutex_init(&priv->lock);
|
|
|
|
i2c_set_clientdata(i2c, priv);
|
|
|
|
regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
|
|
if (IS_ERR(regmap))
|
|
return PTR_ERR(regmap);
|
|
|
|
return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
|
|
&ak4613_dai, 1);
|
|
}
|
|
|
|
static int ak4613_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver ak4613_i2c_driver = {
|
|
.driver = {
|
|
.name = "ak4613-codec",
|
|
.of_match_table = ak4613_of_match,
|
|
},
|
|
.probe = ak4613_i2c_probe,
|
|
.remove = ak4613_i2c_remove,
|
|
.id_table = ak4613_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(ak4613_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("Soc AK4613 driver");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|
|
MODULE_LICENSE("GPL v2");
|