Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 1 | /* |
| 2 | * ak4642.c -- AK4642/AK4643 ALSA Soc Audio driver |
| 3 | * |
| 4 | * Copyright (C) 2009 Renesas Solutions Corp. |
| 5 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> |
| 6 | * |
| 7 | * Based on wm8731.c by Richard Purdie |
| 8 | * Based on ak4535.c by Richard Purdie |
| 9 | * Based on wm8753.c by Liam Girdwood |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | |
| 16 | /* ** CAUTION ** |
| 17 | * |
| 18 | * This is very simple driver. |
| 19 | * It can use headphone output / stereo input only |
| 20 | * |
Kuninori Morimoto | 2021139 | 2011-11-06 22:04:53 -0800 | [diff] [blame] | 21 | * AK4642 is tested. |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 22 | * AK4643 is tested. |
Kuninori Morimoto | a9317e8 | 2011-11-10 16:22:05 -0800 | [diff] [blame] | 23 | * AK4648 is tested. |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 24 | */ |
| 25 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 26 | #include <linux/delay.h> |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 27 | #include <linux/i2c.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 29 | #include <linux/of_device.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 30 | #include <linux/module.h> |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 31 | #include <linux/regmap.h> |
Liam Girdwood | ce6120c | 2010-11-05 15:53:46 +0200 | [diff] [blame] | 32 | #include <sound/soc.h> |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 33 | #include <sound/initval.h> |
Kuninori Morimoto | a300de3 | 2010-07-01 14:23:45 +0900 | [diff] [blame] | 34 | #include <sound/tlv.h> |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 35 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 36 | #define PW_MGMT1 0x00 |
| 37 | #define PW_MGMT2 0x01 |
| 38 | #define SG_SL1 0x02 |
| 39 | #define SG_SL2 0x03 |
| 40 | #define MD_CTL1 0x04 |
| 41 | #define MD_CTL2 0x05 |
| 42 | #define TIMER 0x06 |
| 43 | #define ALC_CTL1 0x07 |
| 44 | #define ALC_CTL2 0x08 |
| 45 | #define L_IVC 0x09 |
| 46 | #define L_DVC 0x0a |
| 47 | #define ALC_CTL3 0x0b |
| 48 | #define R_IVC 0x0c |
| 49 | #define R_DVC 0x0d |
| 50 | #define MD_CTL3 0x0e |
| 51 | #define MD_CTL4 0x0f |
| 52 | #define PW_MGMT3 0x10 |
| 53 | #define DF_S 0x11 |
| 54 | #define FIL3_0 0x12 |
| 55 | #define FIL3_1 0x13 |
| 56 | #define FIL3_2 0x14 |
| 57 | #define FIL3_3 0x15 |
| 58 | #define EQ_0 0x16 |
| 59 | #define EQ_1 0x17 |
| 60 | #define EQ_2 0x18 |
| 61 | #define EQ_3 0x19 |
| 62 | #define EQ_4 0x1a |
| 63 | #define EQ_5 0x1b |
| 64 | #define FIL1_0 0x1c |
| 65 | #define FIL1_1 0x1d |
| 66 | #define FIL1_2 0x1e |
| 67 | #define FIL1_3 0x1f |
| 68 | #define PW_MGMT4 0x20 |
| 69 | #define MD_CTL5 0x21 |
| 70 | #define LO_MS 0x22 |
| 71 | #define HP_MS 0x23 |
| 72 | #define SPK_MS 0x24 |
| 73 | |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 74 | /* PW_MGMT1*/ |
| 75 | #define PMVCM (1 << 6) /* VCOM Power Management */ |
| 76 | #define PMMIN (1 << 5) /* MIN Input Power Management */ |
| 77 | #define PMDAC (1 << 2) /* DAC Power Management */ |
| 78 | #define PMADL (1 << 0) /* MIC Amp Lch and ADC Lch Power Management */ |
| 79 | |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 80 | /* PW_MGMT2 */ |
| 81 | #define HPMTN (1 << 6) |
| 82 | #define PMHPL (1 << 5) |
| 83 | #define PMHPR (1 << 4) |
| 84 | #define MS (1 << 3) /* master/slave select */ |
| 85 | #define MCKO (1 << 1) |
| 86 | #define PMPLL (1 << 0) |
| 87 | |
| 88 | #define PMHP_MASK (PMHPL | PMHPR) |
| 89 | #define PMHP PMHP_MASK |
| 90 | |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 91 | /* PW_MGMT3 */ |
| 92 | #define PMADR (1 << 0) /* MIC L / ADC R Power Management */ |
| 93 | |
| 94 | /* SG_SL1 */ |
| 95 | #define MINS (1 << 6) /* Switch from MIN to Speaker */ |
| 96 | #define DACL (1 << 4) /* Switch from DAC to Stereo or Receiver */ |
| 97 | #define PMMP (1 << 2) /* MPWR pin Power Management */ |
| 98 | #define MGAIN0 (1 << 0) /* MIC amp gain*/ |
| 99 | |
Takeshi Kihara | 39c2618 | 2015-03-24 05:15:22 +0000 | [diff] [blame] | 100 | /* SG_SL2 */ |
| 101 | #define LOPS (1 << 6) /* Stero Line-out Power Save Mode */ |
| 102 | |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 103 | /* TIMER */ |
Sascha Hauer | da73184 | 2014-05-14 09:37:33 +0200 | [diff] [blame] | 104 | #define ZTM(param) ((param & 0x3) << 4) /* ALC Zero Crossing TimeOut */ |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 105 | #define WTM(param) (((param & 0x4) << 4) | ((param & 0x3) << 2)) |
| 106 | |
| 107 | /* ALC_CTL1 */ |
| 108 | #define ALC (1 << 5) /* ALC Enable */ |
| 109 | #define LMTH0 (1 << 0) /* ALC Limiter / Recovery Level */ |
| 110 | |
Kuninori Morimoto | 4b6316b | 2010-03-23 16:27:28 +0900 | [diff] [blame] | 111 | /* MD_CTL1 */ |
| 112 | #define PLL3 (1 << 7) |
| 113 | #define PLL2 (1 << 6) |
| 114 | #define PLL1 (1 << 5) |
| 115 | #define PLL0 (1 << 4) |
| 116 | #define PLL_MASK (PLL3 | PLL2 | PLL1 | PLL0) |
| 117 | |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 118 | #define BCKO_MASK (1 << 3) |
| 119 | #define BCKO_64 BCKO_MASK |
| 120 | |
Kuninori Morimoto | cb9c130 | 2011-01-20 11:45:34 +0900 | [diff] [blame] | 121 | #define DIF_MASK (3 << 0) |
| 122 | #define DSP (0 << 0) |
| 123 | #define RIGHT_J (1 << 0) |
| 124 | #define LEFT_J (2 << 0) |
| 125 | #define I2S (3 << 0) |
| 126 | |
Kuninori Morimoto | 1ad747c | 2010-03-23 16:27:38 +0900 | [diff] [blame] | 127 | /* MD_CTL2 */ |
| 128 | #define FS0 (1 << 0) |
| 129 | #define FS1 (1 << 1) |
| 130 | #define FS2 (1 << 2) |
| 131 | #define FS3 (1 << 5) |
| 132 | #define FS_MASK (FS0 | FS1 | FS2 | FS3) |
| 133 | |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 134 | /* MD_CTL3 */ |
| 135 | #define BST1 (1 << 3) |
| 136 | |
| 137 | /* MD_CTL4 */ |
| 138 | #define DACH (1 << 0) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 139 | |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 140 | struct ak4642_drvdata { |
| 141 | const struct regmap_config *regmap_config; |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 142 | int extended_frequencies; |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | struct ak4642_priv { |
| 146 | const struct ak4642_drvdata *drvdata; |
| 147 | }; |
| 148 | |
Kuninori Morimoto | a300de3 | 2010-07-01 14:23:45 +0900 | [diff] [blame] | 149 | /* |
| 150 | * Playback Volume (table 39) |
| 151 | * |
| 152 | * max : 0x00 : +12.0 dB |
| 153 | * ( 0.5 dB step ) |
| 154 | * min : 0xFE : -115.0 dB |
| 155 | * mute: 0xFF |
| 156 | */ |
Kuninori Morimoto | 1f99e44 | 2012-04-04 23:28:01 -0700 | [diff] [blame] | 157 | static const DECLARE_TLV_DB_SCALE(out_tlv, -11550, 50, 1); |
Kuninori Morimoto | a300de3 | 2010-07-01 14:23:45 +0900 | [diff] [blame] | 158 | |
| 159 | static const struct snd_kcontrol_new ak4642_snd_controls[] = { |
| 160 | |
| 161 | SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC, |
| 162 | 0, 0xFF, 1, out_tlv), |
Sascha Hauer | 370f83a | 2014-05-14 09:37:34 +0200 | [diff] [blame] | 163 | SOC_SINGLE("ALC Capture Switch", ALC_CTL1, 5, 1, 0), |
| 164 | SOC_SINGLE("ALC Capture ZC Switch", ALC_CTL1, 4, 1, 1), |
Kuninori Morimoto | a300de3 | 2010-07-01 14:23:45 +0900 | [diff] [blame] | 165 | }; |
| 166 | |
Kuninori Morimoto | e555cf3 | 2012-02-20 20:14:16 -0800 | [diff] [blame] | 167 | static const struct snd_kcontrol_new ak4642_headphone_control = |
| 168 | SOC_DAPM_SINGLE("Switch", PW_MGMT2, 6, 1, 0); |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 169 | |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 170 | static const struct snd_kcontrol_new ak4642_lout_mixer_controls[] = { |
| 171 | SOC_DAPM_SINGLE("DACL", SG_SL1, 4, 1, 0), |
| 172 | }; |
| 173 | |
Takeshi Kihara | 39c2618 | 2015-03-24 05:15:22 +0000 | [diff] [blame] | 174 | /* event handlers */ |
| 175 | static int ak4642_lout_event(struct snd_soc_dapm_widget *w, |
| 176 | struct snd_kcontrol *kcontrol, int event) |
| 177 | { |
| 178 | struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); |
| 179 | |
| 180 | switch (event) { |
| 181 | case SND_SOC_DAPM_PRE_PMD: |
| 182 | case SND_SOC_DAPM_PRE_PMU: |
| 183 | /* Power save mode ON */ |
| 184 | snd_soc_update_bits(codec, SG_SL2, LOPS, LOPS); |
| 185 | break; |
| 186 | case SND_SOC_DAPM_POST_PMU: |
| 187 | case SND_SOC_DAPM_POST_PMD: |
| 188 | /* Power save mode OFF */ |
| 189 | mdelay(300); |
| 190 | snd_soc_update_bits(codec, SG_SL2, LOPS, 0); |
| 191 | break; |
| 192 | } |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 197 | static const struct snd_soc_dapm_widget ak4642_dapm_widgets[] = { |
| 198 | |
| 199 | /* Outputs */ |
| 200 | SND_SOC_DAPM_OUTPUT("HPOUTL"), |
| 201 | SND_SOC_DAPM_OUTPUT("HPOUTR"), |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 202 | SND_SOC_DAPM_OUTPUT("LINEOUT"), |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 203 | |
Kuninori Morimoto | e555cf3 | 2012-02-20 20:14:16 -0800 | [diff] [blame] | 204 | SND_SOC_DAPM_PGA("HPL Out", PW_MGMT2, 5, 0, NULL, 0), |
| 205 | SND_SOC_DAPM_PGA("HPR Out", PW_MGMT2, 4, 0, NULL, 0), |
| 206 | SND_SOC_DAPM_SWITCH("Headphone Enable", SND_SOC_NOPM, 0, 0, |
| 207 | &ak4642_headphone_control), |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 208 | |
Kuninori Morimoto | e555cf3 | 2012-02-20 20:14:16 -0800 | [diff] [blame] | 209 | SND_SOC_DAPM_PGA("DACH", MD_CTL4, 0, 0, NULL, 0), |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 210 | |
Takeshi Kihara | 39c2618 | 2015-03-24 05:15:22 +0000 | [diff] [blame] | 211 | SND_SOC_DAPM_MIXER_E("LINEOUT Mixer", PW_MGMT1, 3, 0, |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 212 | &ak4642_lout_mixer_controls[0], |
Takeshi Kihara | 39c2618 | 2015-03-24 05:15:22 +0000 | [diff] [blame] | 213 | ARRAY_SIZE(ak4642_lout_mixer_controls), |
| 214 | ak4642_lout_event, |
| 215 | SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | |
| 216 | SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 217 | |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 218 | /* DAC */ |
Kuninori Morimoto | 379c4b0 | 2015-03-16 04:45:54 +0000 | [diff] [blame] | 219 | SND_SOC_DAPM_DAC("DAC", NULL, PW_MGMT1, 2, 0), |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 220 | }; |
| 221 | |
| 222 | static const struct snd_soc_dapm_route ak4642_intercon[] = { |
| 223 | |
| 224 | /* Outputs */ |
Kuninori Morimoto | e555cf3 | 2012-02-20 20:14:16 -0800 | [diff] [blame] | 225 | {"HPOUTL", NULL, "HPL Out"}, |
| 226 | {"HPOUTR", NULL, "HPR Out"}, |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 227 | {"LINEOUT", NULL, "LINEOUT Mixer"}, |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 228 | |
Kuninori Morimoto | e555cf3 | 2012-02-20 20:14:16 -0800 | [diff] [blame] | 229 | {"HPL Out", NULL, "Headphone Enable"}, |
| 230 | {"HPR Out", NULL, "Headphone Enable"}, |
| 231 | |
| 232 | {"Headphone Enable", "Switch", "DACH"}, |
| 233 | |
| 234 | {"DACH", NULL, "DAC"}, |
| 235 | |
Kuninori Morimoto | e8c83db | 2011-11-10 16:21:55 -0800 | [diff] [blame] | 236 | {"LINEOUT Mixer", "DACL", "DAC"}, |
Kuninori Morimoto | 379c4b0 | 2015-03-16 04:45:54 +0000 | [diff] [blame] | 237 | |
| 238 | { "DAC", NULL, "Playback" }, |
Kuninori Morimoto | 24747da | 2011-11-10 16:21:31 -0800 | [diff] [blame] | 239 | }; |
Kuninori Morimoto | a300de3 | 2010-07-01 14:23:45 +0900 | [diff] [blame] | 240 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 241 | /* |
| 242 | * ak4642 register cache |
| 243 | */ |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 244 | static const struct reg_default ak4642_reg[] = { |
| 245 | { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, |
| 246 | { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, |
| 247 | { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, |
| 248 | { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0x08 }, |
| 249 | { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, |
| 250 | { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, |
| 251 | { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, |
| 252 | { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, |
| 253 | { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, |
| 254 | { 36, 0x00 }, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 255 | }; |
| 256 | |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 257 | static const struct reg_default ak4648_reg[] = { |
| 258 | { 0, 0x00 }, { 1, 0x00 }, { 2, 0x01 }, { 3, 0x00 }, |
| 259 | { 4, 0x02 }, { 5, 0x00 }, { 6, 0x00 }, { 7, 0x00 }, |
| 260 | { 8, 0xe1 }, { 9, 0xe1 }, { 10, 0x18 }, { 11, 0x00 }, |
| 261 | { 12, 0xe1 }, { 13, 0x18 }, { 14, 0x11 }, { 15, 0xb8 }, |
| 262 | { 16, 0x00 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x00 }, |
| 263 | { 20, 0x00 }, { 21, 0x00 }, { 22, 0x00 }, { 23, 0x00 }, |
| 264 | { 24, 0x00 }, { 25, 0x00 }, { 26, 0x00 }, { 27, 0x00 }, |
| 265 | { 28, 0x00 }, { 29, 0x00 }, { 30, 0x00 }, { 31, 0x00 }, |
| 266 | { 32, 0x00 }, { 33, 0x00 }, { 34, 0x00 }, { 35, 0x00 }, |
| 267 | { 36, 0x00 }, { 37, 0x88 }, { 38, 0x88 }, { 39, 0x08 }, |
Kuninori Morimoto | a9317e8 | 2011-11-10 16:22:05 -0800 | [diff] [blame] | 268 | }; |
| 269 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 270 | static int ak4642_dai_startup(struct snd_pcm_substream *substream, |
| 271 | struct snd_soc_dai *dai) |
| 272 | { |
| 273 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| 274 | struct snd_soc_codec *codec = dai->codec; |
| 275 | |
| 276 | if (is_play) { |
| 277 | /* |
| 278 | * start headphone output |
| 279 | * |
| 280 | * PLL, Master Mode |
| 281 | * Audio I/F Format :MSB justified (ADC & DAC) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 282 | * Bass Boost Level : Middle |
| 283 | * |
| 284 | * This operation came from example code of |
| 285 | * "ASAHI KASEI AK4642" (japanese) manual p97. |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 286 | */ |
Axel Lin | b91470b | 2011-10-11 20:20:53 +0800 | [diff] [blame] | 287 | snd_soc_write(codec, L_IVC, 0x91); /* volume */ |
| 288 | snd_soc_write(codec, R_IVC, 0x91); /* volume */ |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 289 | } else { |
| 290 | /* |
| 291 | * start stereo input |
| 292 | * |
| 293 | * PLL Master Mode |
| 294 | * Audio I/F Format:MSB justified (ADC & DAC) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 295 | * Pre MIC AMP:+20dB |
| 296 | * MIC Power On |
| 297 | * ALC setting:Refer to Table 35 |
| 298 | * ALC bit=“1” |
| 299 | * |
| 300 | * This operation came from example code of |
| 301 | * "ASAHI KASEI AK4642" (japanese) manual p94. |
| 302 | */ |
Phil Edworthy | 7b5bfb8 | 2013-10-31 23:06:17 -0700 | [diff] [blame] | 303 | snd_soc_update_bits(codec, SG_SL1, PMMP | MGAIN0, PMMP | MGAIN0); |
Axel Lin | b91470b | 2011-10-11 20:20:53 +0800 | [diff] [blame] | 304 | snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3)); |
| 305 | snd_soc_write(codec, ALC_CTL1, ALC | LMTH0); |
Kuninori Morimoto | ed2dd7d | 2011-11-10 16:21:01 -0800 | [diff] [blame] | 306 | snd_soc_update_bits(codec, PW_MGMT1, PMADL, PMADL); |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 307 | snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | static void ak4642_dai_shutdown(struct snd_pcm_substream *substream, |
| 314 | struct snd_soc_dai *dai) |
| 315 | { |
| 316 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| 317 | struct snd_soc_codec *codec = dai->codec; |
| 318 | |
| 319 | if (is_play) { |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 320 | } else { |
| 321 | /* stop stereo input */ |
Kuninori Morimoto | a347123 | 2010-10-15 14:23:18 +0900 | [diff] [blame] | 322 | snd_soc_update_bits(codec, PW_MGMT1, PMADL, 0); |
| 323 | snd_soc_update_bits(codec, PW_MGMT3, PMADR, 0); |
| 324 | snd_soc_update_bits(codec, ALC_CTL1, ALC, 0); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 325 | } |
| 326 | } |
| 327 | |
| 328 | static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai, |
| 329 | int clk_id, unsigned int freq, int dir) |
| 330 | { |
| 331 | struct snd_soc_codec *codec = codec_dai->codec; |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 332 | struct ak4642_priv *priv = snd_soc_codec_get_drvdata(codec); |
Kuninori Morimoto | 4b6316b | 2010-03-23 16:27:28 +0900 | [diff] [blame] | 333 | u8 pll; |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 334 | int extended_freq = 0; |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 335 | |
Kuninori Morimoto | 4b6316b | 2010-03-23 16:27:28 +0900 | [diff] [blame] | 336 | switch (freq) { |
| 337 | case 11289600: |
| 338 | pll = PLL2; |
| 339 | break; |
| 340 | case 12288000: |
| 341 | pll = PLL2 | PLL0; |
| 342 | break; |
| 343 | case 12000000: |
| 344 | pll = PLL2 | PLL1; |
| 345 | break; |
| 346 | case 24000000: |
| 347 | pll = PLL2 | PLL1 | PLL0; |
| 348 | break; |
| 349 | case 13500000: |
| 350 | pll = PLL3 | PLL2; |
| 351 | break; |
| 352 | case 27000000: |
| 353 | pll = PLL3 | PLL2 | PLL0; |
| 354 | break; |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 355 | case 19200000: |
| 356 | pll = PLL3; |
| 357 | extended_freq = 1; |
| 358 | break; |
| 359 | case 13000000: |
| 360 | pll = PLL3 | PLL2 | PLL1; |
| 361 | extended_freq = 1; |
| 362 | break; |
| 363 | case 26000000: |
| 364 | pll = PLL3 | PLL2 | PLL1 | PLL0; |
| 365 | extended_freq = 1; |
| 366 | break; |
Kuninori Morimoto | 4b6316b | 2010-03-23 16:27:28 +0900 | [diff] [blame] | 367 | default: |
| 368 | return -EINVAL; |
| 369 | } |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 370 | |
| 371 | if (extended_freq && !priv->drvdata->extended_frequencies) |
| 372 | return -EINVAL; |
| 373 | |
Kuninori Morimoto | 4b6316b | 2010-03-23 16:27:28 +0900 | [diff] [blame] | 374 | snd_soc_update_bits(codec, MD_CTL1, PLL_MASK, pll); |
| 375 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 376 | return 0; |
| 377 | } |
| 378 | |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 379 | static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 380 | { |
| 381 | struct snd_soc_codec *codec = dai->codec; |
| 382 | u8 data; |
| 383 | u8 bcko; |
| 384 | |
| 385 | data = MCKO | PMPLL; /* use MCKO */ |
| 386 | bcko = 0; |
| 387 | |
| 388 | /* set master/slave audio interface */ |
| 389 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 390 | case SND_SOC_DAIFMT_CBM_CFM: |
| 391 | data |= MS; |
| 392 | bcko = BCKO_64; |
| 393 | break; |
| 394 | case SND_SOC_DAIFMT_CBS_CFS: |
| 395 | break; |
| 396 | default: |
| 397 | return -EINVAL; |
| 398 | } |
Kuninori Morimoto | bd7fdbc | 2011-07-06 17:58:56 -0700 | [diff] [blame] | 399 | snd_soc_update_bits(codec, PW_MGMT2, MS | MCKO | PMPLL, data); |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 400 | snd_soc_update_bits(codec, MD_CTL1, BCKO_MASK, bcko); |
| 401 | |
Kuninori Morimoto | cb9c130 | 2011-01-20 11:45:34 +0900 | [diff] [blame] | 402 | /* format type */ |
| 403 | data = 0; |
| 404 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 405 | case SND_SOC_DAIFMT_LEFT_J: |
| 406 | data = LEFT_J; |
| 407 | break; |
| 408 | case SND_SOC_DAIFMT_I2S: |
| 409 | data = I2S; |
| 410 | break; |
| 411 | /* FIXME |
| 412 | * Please add RIGHT_J / DSP support here |
| 413 | */ |
| 414 | default: |
| 415 | return -EINVAL; |
Kuninori Morimoto | cb9c130 | 2011-01-20 11:45:34 +0900 | [diff] [blame] | 416 | } |
| 417 | snd_soc_update_bits(codec, MD_CTL1, DIF_MASK, data); |
| 418 | |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 419 | return 0; |
| 420 | } |
| 421 | |
Kuninori Morimoto | 1ad747c | 2010-03-23 16:27:38 +0900 | [diff] [blame] | 422 | static int ak4642_dai_hw_params(struct snd_pcm_substream *substream, |
| 423 | struct snd_pcm_hw_params *params, |
| 424 | struct snd_soc_dai *dai) |
| 425 | { |
| 426 | struct snd_soc_codec *codec = dai->codec; |
| 427 | u8 rate; |
| 428 | |
| 429 | switch (params_rate(params)) { |
| 430 | case 7350: |
| 431 | rate = FS2; |
| 432 | break; |
| 433 | case 8000: |
| 434 | rate = 0; |
| 435 | break; |
| 436 | case 11025: |
| 437 | rate = FS2 | FS0; |
| 438 | break; |
| 439 | case 12000: |
| 440 | rate = FS0; |
| 441 | break; |
| 442 | case 14700: |
| 443 | rate = FS2 | FS1; |
| 444 | break; |
| 445 | case 16000: |
| 446 | rate = FS1; |
| 447 | break; |
| 448 | case 22050: |
| 449 | rate = FS2 | FS1 | FS0; |
| 450 | break; |
| 451 | case 24000: |
| 452 | rate = FS1 | FS0; |
| 453 | break; |
| 454 | case 29400: |
| 455 | rate = FS3 | FS2 | FS1; |
| 456 | break; |
| 457 | case 32000: |
| 458 | rate = FS3 | FS1; |
| 459 | break; |
| 460 | case 44100: |
| 461 | rate = FS3 | FS2 | FS1 | FS0; |
| 462 | break; |
| 463 | case 48000: |
| 464 | rate = FS3 | FS1 | FS0; |
| 465 | break; |
| 466 | default: |
| 467 | return -EINVAL; |
Kuninori Morimoto | 1ad747c | 2010-03-23 16:27:38 +0900 | [diff] [blame] | 468 | } |
| 469 | snd_soc_update_bits(codec, MD_CTL2, FS_MASK, rate); |
| 470 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 471 | return 0; |
| 472 | } |
| 473 | |
Kuninori Morimoto | ed2dd7d | 2011-11-10 16:21:01 -0800 | [diff] [blame] | 474 | static int ak4642_set_bias_level(struct snd_soc_codec *codec, |
| 475 | enum snd_soc_bias_level level) |
| 476 | { |
| 477 | switch (level) { |
| 478 | case SND_SOC_BIAS_OFF: |
| 479 | snd_soc_write(codec, PW_MGMT1, 0x00); |
| 480 | break; |
| 481 | default: |
| 482 | snd_soc_update_bits(codec, PW_MGMT1, PMVCM, PMVCM); |
| 483 | break; |
| 484 | } |
Kuninori Morimoto | ed2dd7d | 2011-11-10 16:21:01 -0800 | [diff] [blame] | 485 | |
| 486 | return 0; |
| 487 | } |
| 488 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 489 | static const struct snd_soc_dai_ops ak4642_dai_ops = { |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 490 | .startup = ak4642_dai_startup, |
| 491 | .shutdown = ak4642_dai_shutdown, |
| 492 | .set_sysclk = ak4642_dai_set_sysclk, |
Kuninori Morimoto | 0643ce8 | 2010-03-15 18:10:50 +0900 | [diff] [blame] | 493 | .set_fmt = ak4642_dai_set_fmt, |
Kuninori Morimoto | 1ad747c | 2010-03-23 16:27:38 +0900 | [diff] [blame] | 494 | .hw_params = ak4642_dai_hw_params, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 495 | }; |
| 496 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 497 | static struct snd_soc_dai_driver ak4642_dai = { |
| 498 | .name = "ak4642-hifi", |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 499 | .playback = { |
| 500 | .stream_name = "Playback", |
Kuninori Morimoto | c01673e | 2015-04-10 08:46:22 +0000 | [diff] [blame] | 501 | .channels_min = 2, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 502 | .channels_max = 2, |
| 503 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 504 | .formats = SNDRV_PCM_FMTBIT_S16_LE }, |
| 505 | .capture = { |
| 506 | .stream_name = "Capture", |
Kuninori Morimoto | c01673e | 2015-04-10 08:46:22 +0000 | [diff] [blame] | 507 | .channels_min = 2, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 508 | .channels_max = 2, |
| 509 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 510 | .formats = SNDRV_PCM_FMTBIT_S16_LE }, |
| 511 | .ops = &ak4642_dai_ops, |
Kuninori Morimoto | 1ad747c | 2010-03-23 16:27:38 +0900 | [diff] [blame] | 512 | .symmetric_rates = 1, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 513 | }; |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 514 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 515 | static int ak4642_resume(struct snd_soc_codec *codec) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 516 | { |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 517 | struct regmap *regmap = dev_get_regmap(codec->dev, NULL); |
| 518 | |
| 519 | regcache_mark_dirty(regmap); |
| 520 | regcache_sync(regmap); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 521 | return 0; |
| 522 | } |
| 523 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 524 | static struct snd_soc_codec_driver soc_codec_dev_ak4642 = { |
Kuninori Morimoto | 0ce75aa | 2010-09-16 13:06:40 +0900 | [diff] [blame] | 525 | .resume = ak4642_resume, |
Kuninori Morimoto | ed2dd7d | 2011-11-10 16:21:01 -0800 | [diff] [blame] | 526 | .set_bias_level = ak4642_set_bias_level, |
Mark Brown | a8ca52b | 2013-11-28 17:27:02 +0000 | [diff] [blame] | 527 | .controls = ak4642_snd_controls, |
| 528 | .num_controls = ARRAY_SIZE(ak4642_snd_controls), |
Kuninori Morimoto | a9317e8 | 2011-11-10 16:22:05 -0800 | [diff] [blame] | 529 | .dapm_widgets = ak4642_dapm_widgets, |
| 530 | .num_dapm_widgets = ARRAY_SIZE(ak4642_dapm_widgets), |
| 531 | .dapm_routes = ak4642_intercon, |
| 532 | .num_dapm_routes = ARRAY_SIZE(ak4642_intercon), |
| 533 | }; |
| 534 | |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 535 | static const struct regmap_config ak4642_regmap = { |
| 536 | .reg_bits = 8, |
| 537 | .val_bits = 8, |
| 538 | .max_register = ARRAY_SIZE(ak4642_reg) + 1, |
| 539 | .reg_defaults = ak4642_reg, |
| 540 | .num_reg_defaults = ARRAY_SIZE(ak4642_reg), |
| 541 | }; |
| 542 | |
| 543 | static const struct regmap_config ak4648_regmap = { |
| 544 | .reg_bits = 8, |
| 545 | .val_bits = 8, |
| 546 | .max_register = ARRAY_SIZE(ak4648_reg) + 1, |
| 547 | .reg_defaults = ak4648_reg, |
| 548 | .num_reg_defaults = ARRAY_SIZE(ak4648_reg), |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 549 | }; |
| 550 | |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 551 | static const struct ak4642_drvdata ak4642_drvdata = { |
| 552 | .regmap_config = &ak4642_regmap, |
| 553 | }; |
| 554 | |
| 555 | static const struct ak4642_drvdata ak4643_drvdata = { |
| 556 | .regmap_config = &ak4642_regmap, |
| 557 | }; |
| 558 | |
| 559 | static const struct ak4642_drvdata ak4648_drvdata = { |
| 560 | .regmap_config = &ak4648_regmap, |
Sascha Hauer | 5cd15e2 | 2014-05-14 09:37:36 +0200 | [diff] [blame] | 561 | .extended_frequencies = 1, |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 562 | }; |
| 563 | |
Kiran Padwal | 27204ca | 2014-07-28 11:41:04 +0530 | [diff] [blame] | 564 | static const struct of_device_id ak4642_of_match[]; |
Bill Pemberton | 7a79e94 | 2012-12-07 09:26:37 -0500 | [diff] [blame] | 565 | static int ak4642_i2c_probe(struct i2c_client *i2c, |
| 566 | const struct i2c_device_id *id) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 567 | { |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 568 | struct device_node *np = i2c->dev.of_node; |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 569 | const struct ak4642_drvdata *drvdata = NULL; |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 570 | struct regmap *regmap; |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 571 | struct ak4642_priv *priv; |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 572 | |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 573 | if (np) { |
| 574 | const struct of_device_id *of_id; |
| 575 | |
| 576 | of_id = of_match_device(ak4642_of_match, &i2c->dev); |
| 577 | if (of_id) |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 578 | drvdata = of_id->data; |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 579 | } else { |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 580 | drvdata = (const struct ak4642_drvdata *)id->driver_data; |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 581 | } |
| 582 | |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 583 | if (!drvdata) { |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 584 | dev_err(&i2c->dev, "Unknown device type\n"); |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 585 | return -EINVAL; |
| 586 | } |
| 587 | |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 588 | priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); |
| 589 | if (!priv) |
| 590 | return -ENOMEM; |
| 591 | |
| 592 | priv->drvdata = drvdata; |
| 593 | |
| 594 | i2c_set_clientdata(i2c, priv); |
| 595 | |
| 596 | regmap = devm_regmap_init_i2c(i2c, drvdata->regmap_config); |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 597 | if (IS_ERR(regmap)) |
| 598 | return PTR_ERR(regmap); |
| 599 | |
Kuninori Morimoto | 2f39125 | 2012-11-20 20:24:10 -0800 | [diff] [blame] | 600 | return snd_soc_register_codec(&i2c->dev, |
Mark Brown | 4574cd9 | 2013-11-28 18:03:49 +0000 | [diff] [blame] | 601 | &soc_codec_dev_ak4642, &ak4642_dai, 1); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 602 | } |
| 603 | |
Bill Pemberton | 7a79e94 | 2012-12-07 09:26:37 -0500 | [diff] [blame] | 604 | static int ak4642_i2c_remove(struct i2c_client *client) |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 605 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 606 | snd_soc_unregister_codec(&client->dev); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 607 | return 0; |
| 608 | } |
| 609 | |
Kiran Padwal | 27204ca | 2014-07-28 11:41:04 +0530 | [diff] [blame] | 610 | static const struct of_device_id ak4642_of_match[] = { |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 611 | { .compatible = "asahi-kasei,ak4642", .data = &ak4642_drvdata}, |
| 612 | { .compatible = "asahi-kasei,ak4643", .data = &ak4643_drvdata}, |
| 613 | { .compatible = "asahi-kasei,ak4648", .data = &ak4648_drvdata}, |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 614 | {}, |
| 615 | }; |
| 616 | MODULE_DEVICE_TABLE(of, ak4642_of_match); |
| 617 | |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 618 | static const struct i2c_device_id ak4642_i2c_id[] = { |
Sascha Hauer | d815c70 | 2014-05-14 09:37:35 +0200 | [diff] [blame] | 619 | { "ak4642", (kernel_ulong_t)&ak4642_drvdata }, |
| 620 | { "ak4643", (kernel_ulong_t)&ak4643_drvdata }, |
| 621 | { "ak4648", (kernel_ulong_t)&ak4648_drvdata }, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 622 | { } |
| 623 | }; |
| 624 | MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id); |
| 625 | |
| 626 | static struct i2c_driver ak4642_i2c_driver = { |
| 627 | .driver = { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 628 | .name = "ak4642-codec", |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 629 | .owner = THIS_MODULE, |
Kuninori Morimoto | bbf1453 | 2013-01-10 00:29:11 -0800 | [diff] [blame] | 630 | .of_match_table = ak4642_of_match, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 631 | }, |
Kuninori Morimoto | 0ce75aa | 2010-09-16 13:06:40 +0900 | [diff] [blame] | 632 | .probe = ak4642_i2c_probe, |
Bill Pemberton | 7a79e94 | 2012-12-07 09:26:37 -0500 | [diff] [blame] | 633 | .remove = ak4642_i2c_remove, |
Kuninori Morimoto | 0ce75aa | 2010-09-16 13:06:40 +0900 | [diff] [blame] | 634 | .id_table = ak4642_i2c_id, |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 635 | }; |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 636 | |
Mark Brown | 2f54d2a | 2013-11-28 17:24:55 +0000 | [diff] [blame] | 637 | module_i2c_driver(ak4642_i2c_driver); |
Kuninori Morimoto | a3a83d9 | 2009-08-21 10:23:41 +0900 | [diff] [blame] | 638 | |
| 639 | MODULE_DESCRIPTION("Soc AK4642 driver"); |
| 640 | MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); |
| 641 | MODULE_LICENSE("GPL"); |