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700 lines
17 KiB
700 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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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 <[email protected]> |
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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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#include <linux/clk.h> |
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#include <linux/delay.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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struct work_struct dummy_write_work; |
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struct snd_soc_component *component; |
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unsigned int rate; |
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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_component *component = dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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struct device *dev = component->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_component *component = dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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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_component *component = codec_dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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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_component *component = dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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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_component *component = dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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const struct ak4613_interface *iface; |
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struct device *dev = component->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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priv->rate = rate; |
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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_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl); |
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snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2); |
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snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic); |
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snd_soc_component_update_bits(component, 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_component *component, |
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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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fallthrough; |
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case SND_SOC_BIAS_PREPARE: |
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mgmt1 |= PMADC | PMDAC; |
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fallthrough; |
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case SND_SOC_BIAS_STANDBY: |
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mgmt1 |= PMVR; |
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fallthrough; |
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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_component_write(component, PW_MGMT1, mgmt1); |
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return 0; |
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} |
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static void ak4613_dummy_write(struct work_struct *work) |
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{ |
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struct ak4613_priv *priv = container_of(work, |
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struct ak4613_priv, |
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dummy_write_work); |
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struct snd_soc_component *component = priv->component; |
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unsigned int mgmt1; |
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unsigned int mgmt3; |
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/* |
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* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks |
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* |
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* Note |
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* |
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* To avoid extra delay, we want to avoid preemption here, |
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* but we can't. Because it uses I2C access which is using IRQ |
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* and sleep. Thus, delay might be more than 5 LR clocks |
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* see also |
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* ak4613_dai_trigger() |
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*/ |
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udelay(5000000 / priv->rate); |
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mgmt1 = snd_soc_component_read(component, PW_MGMT1); |
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mgmt3 = snd_soc_component_read(component, PW_MGMT3); |
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snd_soc_component_write(component, PW_MGMT1, mgmt1); |
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snd_soc_component_write(component, PW_MGMT3, mgmt3); |
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} |
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static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct ak4613_priv *priv = snd_soc_component_get_drvdata(component); |
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|
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/* |
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* FIXME |
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* |
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* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks |
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* from Power Down Release. Otherwise, Playback volume will be 0dB. |
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* To avoid complex multiple delay/dummy_write method from |
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* ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...), |
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* call it once here. |
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* |
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* But, unfortunately, we can't "write" here because here is atomic |
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* context (It uses I2C access for writing). |
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* Thus, use schedule_work() to switching to normal context |
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* immediately. |
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* |
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* Note |
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* |
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* Calling ak4613_dummy_write() function might be delayed. |
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* In such case, ak4613 volume might be temporarily 0dB when |
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* beggining of playback. |
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* see also |
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* ak4613_dummy_write() |
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*/ |
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if ((cmd != SNDRV_PCM_TRIGGER_START) && |
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(cmd != SNDRV_PCM_TRIGGER_RESUME)) |
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return 0; |
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if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) |
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return 0; |
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priv->component = component; |
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schedule_work(&priv->dummy_write_work); |
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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, |
|
.set_fmt = ak4613_dai_set_fmt, |
|
.trigger = ak4613_dai_trigger, |
|
.hw_params = ak4613_dai_hw_params, |
|
}; |
|
|
|
#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ |
|
SNDRV_PCM_RATE_44100 |\ |
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SNDRV_PCM_RATE_48000 |\ |
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SNDRV_PCM_RATE_64000 |\ |
|
SNDRV_PCM_RATE_88200 |\ |
|
SNDRV_PCM_RATE_96000 |\ |
|
SNDRV_PCM_RATE_176400 |\ |
|
SNDRV_PCM_RATE_192000) |
|
#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) |
|
|
|
static struct snd_soc_dai_driver ak4613_dai = { |
|
.name = "ak4613-hifi", |
|
.playback = { |
|
.stream_name = "Playback", |
|
.channels_min = 2, |
|
.channels_max = 2, |
|
.rates = AK4613_PCM_RATE, |
|
.formats = AK4613_PCM_FMTBIT, |
|
}, |
|
.capture = { |
|
.stream_name = "Capture", |
|
.channels_min = 2, |
|
.channels_max = 2, |
|
.rates = AK4613_PCM_RATE, |
|
.formats = AK4613_PCM_FMTBIT, |
|
}, |
|
.ops = &ak4613_dai_ops, |
|
.symmetric_rate = 1, |
|
}; |
|
|
|
static int ak4613_suspend(struct snd_soc_component *component) |
|
{ |
|
struct regmap *regmap = dev_get_regmap(component->dev, NULL); |
|
|
|
regcache_cache_only(regmap, true); |
|
regcache_mark_dirty(regmap); |
|
return 0; |
|
} |
|
|
|
static int ak4613_resume(struct snd_soc_component *component) |
|
{ |
|
struct regmap *regmap = dev_get_regmap(component->dev, NULL); |
|
|
|
regcache_cache_only(regmap, false); |
|
return regcache_sync(regmap); |
|
} |
|
|
|
static const struct snd_soc_component_driver soc_component_dev_ak4613 = { |
|
.suspend = ak4613_suspend, |
|
.resume = ak4613_resume, |
|
.set_bias_level = ak4613_set_bias_level, |
|
.controls = ak4613_snd_controls, |
|
.num_controls = ARRAY_SIZE(ak4613_snd_controls), |
|
.dapm_widgets = ak4613_dapm_widgets, |
|
.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), |
|
.dapm_routes = ak4613_intercon, |
|
.num_dapm_routes = ARRAY_SIZE(ak4613_intercon), |
|
.idle_bias_on = 1, |
|
.endianness = 1, |
|
.non_legacy_dai_naming = 1, |
|
}; |
|
|
|
static void ak4613_parse_of(struct ak4613_priv *priv, |
|
struct device *dev) |
|
{ |
|
struct device_node *np = dev->of_node; |
|
char prop[32]; |
|
int i; |
|
|
|
/* Input 1 - 2 */ |
|
for (i = 0; i < 2; i++) { |
|
snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); |
|
if (!of_get_property(np, prop, NULL)) |
|
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; |
|
INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write); |
|
|
|
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 devm_snd_soc_register_component(dev, &soc_component_dev_ak4613, |
|
&ak4613_dai, 1); |
|
} |
|
|
|
static int ak4613_i2c_remove(struct i2c_client *client) |
|
{ |
|
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 <[email protected]>"); |
|
MODULE_LICENSE("GPL v2");
|
|
|