Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 1 | /* |
| 2 | * wm8731.c -- WM8731 ALSA SoC Audio driver |
| 3 | * |
| 4 | * Copyright 2005 Openedhand Ltd. |
| 5 | * |
| 6 | * Author: Richard Purdie <richard@openedhand.com> |
| 7 | * |
| 8 | * Based on wm8753.c by Liam Girdwood |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/moduleparam.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/pm.h> |
| 20 | #include <linux/i2c.h> |
| 21 | #include <linux/platform_device.h> |
Cliff Cai | d2a4035 | 2008-09-01 18:47:03 +0100 | [diff] [blame] | 22 | #include <linux/spi/spi.h> |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 23 | #include <sound/core.h> |
| 24 | #include <sound/pcm.h> |
| 25 | #include <sound/pcm_params.h> |
| 26 | #include <sound/soc.h> |
| 27 | #include <sound/soc-dapm.h> |
| 28 | #include <sound/initval.h> |
| 29 | |
| 30 | #include "wm8731.h" |
| 31 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 32 | struct snd_soc_codec_device soc_codec_dev_wm8731; |
| 33 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 34 | /* codec private data */ |
| 35 | struct wm8731_priv { |
| 36 | unsigned int sysclk; |
| 37 | }; |
| 38 | |
Mark Brown | a8035c8 | 2009-02-16 19:35:43 +0000 | [diff] [blame^] | 39 | #ifdef CONFIG_SPI_MASTER |
| 40 | static int wm8731_spi_write(struct spi_device *spi, const char *data, int len); |
| 41 | static struct spi_driver wm8731_spi_driver; |
| 42 | #endif |
| 43 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 44 | /* |
| 45 | * wm8731 register cache |
| 46 | * We can't read the WM8731 register space when we are |
| 47 | * using 2 wire for device control, so we cache them instead. |
| 48 | * There is no point in caching the reset register |
| 49 | */ |
| 50 | static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { |
| 51 | 0x0097, 0x0097, 0x0079, 0x0079, |
| 52 | 0x000a, 0x0008, 0x009f, 0x000a, |
| 53 | 0x0000, 0x0000 |
| 54 | }; |
| 55 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 56 | /* |
| 57 | * read wm8731 register cache |
| 58 | */ |
| 59 | static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec *codec, |
| 60 | unsigned int reg) |
| 61 | { |
| 62 | u16 *cache = codec->reg_cache; |
| 63 | if (reg == WM8731_RESET) |
| 64 | return 0; |
| 65 | if (reg >= WM8731_CACHEREGNUM) |
| 66 | return -1; |
| 67 | return cache[reg]; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * write wm8731 register cache |
| 72 | */ |
| 73 | static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec, |
| 74 | u16 reg, unsigned int value) |
| 75 | { |
| 76 | u16 *cache = codec->reg_cache; |
| 77 | if (reg >= WM8731_CACHEREGNUM) |
| 78 | return; |
| 79 | cache[reg] = value; |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * write to the WM8731 register space |
| 84 | */ |
| 85 | static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg, |
| 86 | unsigned int value) |
| 87 | { |
| 88 | u8 data[2]; |
| 89 | |
| 90 | /* data is |
| 91 | * D15..D9 WM8731 register offset |
| 92 | * D8...D0 register data |
| 93 | */ |
| 94 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| 95 | data[1] = value & 0x00ff; |
| 96 | |
Mark Brown | d454aee | 2008-04-23 15:16:46 +0200 | [diff] [blame] | 97 | wm8731_write_reg_cache(codec, reg, value); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 98 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
| 99 | return 0; |
| 100 | else |
| 101 | return -EIO; |
| 102 | } |
| 103 | |
| 104 | #define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0) |
| 105 | |
| 106 | static const char *wm8731_input_select[] = {"Line In", "Mic"}; |
| 107 | static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| 108 | |
| 109 | static const struct soc_enum wm8731_enum[] = { |
| 110 | SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select), |
| 111 | SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph), |
| 112 | }; |
| 113 | |
| 114 | static const struct snd_kcontrol_new wm8731_snd_controls[] = { |
| 115 | |
Liam Girdwood | bd903b6 | 2006-11-09 16:35:01 +0100 | [diff] [blame] | 116 | SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, |
| 117 | 0, 127, 0), |
| 118 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, |
| 119 | 7, 1, 0), |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 120 | |
| 121 | SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0), |
| 122 | SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), |
| 123 | |
| 124 | SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0), |
| 125 | SOC_SINGLE("Capture Mic Switch", WM8731_APANA, 1, 1, 1), |
| 126 | |
| 127 | SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1), |
| 128 | |
| 129 | SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), |
| 130 | SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), |
| 131 | |
| 132 | SOC_ENUM("Playback De-emphasis", wm8731_enum[1]), |
| 133 | }; |
| 134 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 135 | /* Output Mixer */ |
| 136 | static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { |
| 137 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), |
| 138 | SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), |
| 139 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), |
| 140 | }; |
| 141 | |
| 142 | /* Input mux */ |
| 143 | static const struct snd_kcontrol_new wm8731_input_mux_controls = |
| 144 | SOC_DAPM_ENUM("Input Select", wm8731_enum[0]); |
| 145 | |
| 146 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { |
| 147 | SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, |
| 148 | &wm8731_output_mixer_controls[0], |
| 149 | ARRAY_SIZE(wm8731_output_mixer_controls)), |
| 150 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), |
| 151 | SND_SOC_DAPM_OUTPUT("LOUT"), |
| 152 | SND_SOC_DAPM_OUTPUT("LHPOUT"), |
| 153 | SND_SOC_DAPM_OUTPUT("ROUT"), |
| 154 | SND_SOC_DAPM_OUTPUT("RHPOUT"), |
| 155 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), |
| 156 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), |
| 157 | SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), |
| 158 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), |
| 159 | SND_SOC_DAPM_INPUT("MICIN"), |
| 160 | SND_SOC_DAPM_INPUT("RLINEIN"), |
| 161 | SND_SOC_DAPM_INPUT("LLINEIN"), |
| 162 | }; |
| 163 | |
Mark Brown | a65f056 | 2008-05-13 14:54:43 +0200 | [diff] [blame] | 164 | static const struct snd_soc_dapm_route intercon[] = { |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 165 | /* output mixer */ |
| 166 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, |
| 167 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, |
| 168 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, |
| 169 | |
| 170 | /* outputs */ |
| 171 | {"RHPOUT", NULL, "Output Mixer"}, |
| 172 | {"ROUT", NULL, "Output Mixer"}, |
| 173 | {"LHPOUT", NULL, "Output Mixer"}, |
| 174 | {"LOUT", NULL, "Output Mixer"}, |
| 175 | |
| 176 | /* input mux */ |
| 177 | {"Input Mux", "Line In", "Line Input"}, |
| 178 | {"Input Mux", "Mic", "Mic Bias"}, |
| 179 | {"ADC", NULL, "Input Mux"}, |
| 180 | |
| 181 | /* inputs */ |
| 182 | {"Line Input", NULL, "LLINEIN"}, |
| 183 | {"Line Input", NULL, "RLINEIN"}, |
| 184 | {"Mic Bias", NULL, "MICIN"}, |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 185 | }; |
| 186 | |
| 187 | static int wm8731_add_widgets(struct snd_soc_codec *codec) |
| 188 | { |
Mark Brown | a65f056 | 2008-05-13 14:54:43 +0200 | [diff] [blame] | 189 | snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets, |
| 190 | ARRAY_SIZE(wm8731_dapm_widgets)); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 191 | |
Mark Brown | a65f056 | 2008-05-13 14:54:43 +0200 | [diff] [blame] | 192 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 193 | |
| 194 | snd_soc_dapm_new_widgets(codec); |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | struct _coeff_div { |
| 199 | u32 mclk; |
| 200 | u32 rate; |
| 201 | u16 fs; |
| 202 | u8 sr:4; |
| 203 | u8 bosr:1; |
| 204 | u8 usb:1; |
| 205 | }; |
| 206 | |
| 207 | /* codec mclk clock divider coefficients */ |
| 208 | static const struct _coeff_div coeff_div[] = { |
| 209 | /* 48k */ |
| 210 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, |
| 211 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, |
| 212 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, |
| 213 | |
| 214 | /* 32k */ |
| 215 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, |
| 216 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, |
Frank Mandarino | 298a2c7 | 2007-01-31 10:02:56 +0100 | [diff] [blame] | 217 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 218 | |
| 219 | /* 8k */ |
| 220 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, |
| 221 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, |
| 222 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, |
| 223 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, |
| 224 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, |
| 225 | |
| 226 | /* 96k */ |
| 227 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, |
| 228 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, |
| 229 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, |
| 230 | |
| 231 | /* 44.1k */ |
| 232 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, |
| 233 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, |
| 234 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, |
| 235 | |
| 236 | /* 88.2k */ |
| 237 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, |
| 238 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, |
| 239 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, |
| 240 | }; |
| 241 | |
| 242 | static inline int get_coeff(int mclk, int rate) |
| 243 | { |
| 244 | int i; |
| 245 | |
| 246 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| 247 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| 248 | return i; |
| 249 | } |
| 250 | return 0; |
| 251 | } |
| 252 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 253 | static int wm8731_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 254 | struct snd_pcm_hw_params *params, |
| 255 | struct snd_soc_dai *dai) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 256 | { |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 257 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 258 | struct snd_soc_device *socdev = rtd->socdev; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 259 | struct snd_soc_codec *codec = socdev->card->codec; |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 260 | struct wm8731_priv *wm8731 = codec->private_data; |
| 261 | u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3; |
| 262 | int i = get_coeff(wm8731->sysclk, params_rate(params)); |
| 263 | u16 srate = (coeff_div[i].sr << 2) | |
| 264 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 265 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 266 | wm8731_write(codec, WM8731_SRATE, srate); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 267 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 268 | /* bit size */ |
| 269 | switch (params_format(params)) { |
| 270 | case SNDRV_PCM_FORMAT_S16_LE: |
| 271 | break; |
| 272 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 273 | iface |= 0x0004; |
| 274 | break; |
| 275 | case SNDRV_PCM_FORMAT_S24_LE: |
| 276 | iface |= 0x0008; |
| 277 | break; |
| 278 | } |
| 279 | |
| 280 | wm8731_write(codec, WM8731_IFACE, iface); |
| 281 | return 0; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 282 | } |
| 283 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 284 | static int wm8731_pcm_prepare(struct snd_pcm_substream *substream, |
| 285 | struct snd_soc_dai *dai) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 286 | { |
| 287 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 288 | struct snd_soc_device *socdev = rtd->socdev; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 289 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 290 | |
| 291 | /* set active */ |
| 292 | wm8731_write(codec, WM8731_ACTIVE, 0x0001); |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 293 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 294 | return 0; |
| 295 | } |
| 296 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 297 | static void wm8731_shutdown(struct snd_pcm_substream *substream, |
| 298 | struct snd_soc_dai *dai) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 299 | { |
| 300 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 301 | struct snd_soc_device *socdev = rtd->socdev; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 302 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 303 | |
| 304 | /* deactivate */ |
| 305 | if (!codec->active) { |
| 306 | udelay(50); |
| 307 | wm8731_write(codec, WM8731_ACTIVE, 0x0); |
| 308 | } |
| 309 | } |
| 310 | |
Liam Girdwood | e550e17 | 2008-07-07 16:07:52 +0100 | [diff] [blame] | 311 | static int wm8731_mute(struct snd_soc_dai *dai, int mute) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 312 | { |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 313 | struct snd_soc_codec *codec = dai->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 314 | u16 mute_reg = wm8731_read_reg_cache(codec, WM8731_APDIGI) & 0xfff7; |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 315 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 316 | if (mute) |
| 317 | wm8731_write(codec, WM8731_APDIGI, mute_reg | 0x8); |
| 318 | else |
| 319 | wm8731_write(codec, WM8731_APDIGI, mute_reg); |
| 320 | return 0; |
| 321 | } |
| 322 | |
Liam Girdwood | e550e17 | 2008-07-07 16:07:52 +0100 | [diff] [blame] | 323 | static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 324 | int clk_id, unsigned int freq, int dir) |
| 325 | { |
| 326 | struct snd_soc_codec *codec = codec_dai->codec; |
| 327 | struct wm8731_priv *wm8731 = codec->private_data; |
| 328 | |
| 329 | switch (freq) { |
| 330 | case 11289600: |
| 331 | case 12000000: |
| 332 | case 12288000: |
| 333 | case 16934400: |
| 334 | case 18432000: |
| 335 | wm8731->sysclk = freq; |
| 336 | return 0; |
| 337 | } |
| 338 | return -EINVAL; |
| 339 | } |
| 340 | |
| 341 | |
Liam Girdwood | e550e17 | 2008-07-07 16:07:52 +0100 | [diff] [blame] | 342 | static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 343 | unsigned int fmt) |
| 344 | { |
| 345 | struct snd_soc_codec *codec = codec_dai->codec; |
| 346 | u16 iface = 0; |
| 347 | |
| 348 | /* set master/slave audio interface */ |
| 349 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 350 | case SND_SOC_DAIFMT_CBM_CFM: |
| 351 | iface |= 0x0040; |
| 352 | break; |
| 353 | case SND_SOC_DAIFMT_CBS_CFS: |
| 354 | break; |
| 355 | default: |
| 356 | return -EINVAL; |
| 357 | } |
| 358 | |
| 359 | /* interface format */ |
| 360 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 361 | case SND_SOC_DAIFMT_I2S: |
| 362 | iface |= 0x0002; |
| 363 | break; |
| 364 | case SND_SOC_DAIFMT_RIGHT_J: |
| 365 | break; |
| 366 | case SND_SOC_DAIFMT_LEFT_J: |
| 367 | iface |= 0x0001; |
| 368 | break; |
| 369 | case SND_SOC_DAIFMT_DSP_A: |
| 370 | iface |= 0x0003; |
| 371 | break; |
| 372 | case SND_SOC_DAIFMT_DSP_B: |
| 373 | iface |= 0x0013; |
| 374 | break; |
| 375 | default: |
| 376 | return -EINVAL; |
| 377 | } |
| 378 | |
| 379 | /* clock inversion */ |
| 380 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 381 | case SND_SOC_DAIFMT_NB_NF: |
| 382 | break; |
| 383 | case SND_SOC_DAIFMT_IB_IF: |
| 384 | iface |= 0x0090; |
| 385 | break; |
| 386 | case SND_SOC_DAIFMT_IB_NF: |
| 387 | iface |= 0x0080; |
| 388 | break; |
| 389 | case SND_SOC_DAIFMT_NB_IF: |
| 390 | iface |= 0x0010; |
| 391 | break; |
| 392 | default: |
| 393 | return -EINVAL; |
| 394 | } |
| 395 | |
| 396 | /* set iface */ |
| 397 | wm8731_write(codec, WM8731_IFACE, iface); |
| 398 | return 0; |
| 399 | } |
| 400 | |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 401 | static int wm8731_set_bias_level(struct snd_soc_codec *codec, |
| 402 | enum snd_soc_bias_level level) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 403 | { |
Mark Brown | 22d22ee | 2009-02-16 19:20:15 +0000 | [diff] [blame] | 404 | u16 reg; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 405 | |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 406 | switch (level) { |
| 407 | case SND_SOC_BIAS_ON: |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 408 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 409 | case SND_SOC_BIAS_PREPARE: |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 410 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 411 | case SND_SOC_BIAS_STANDBY: |
Mark Brown | 22d22ee | 2009-02-16 19:20:15 +0000 | [diff] [blame] | 412 | /* Clear PWROFF, gate CLKOUT, everything else as-is */ |
| 413 | reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 414 | wm8731_write(codec, WM8731_PWR, reg | 0x0040); |
| 415 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 416 | case SND_SOC_BIAS_OFF: |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 417 | wm8731_write(codec, WM8731_ACTIVE, 0x0); |
| 418 | wm8731_write(codec, WM8731_PWR, 0xffff); |
| 419 | break; |
| 420 | } |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 421 | codec->bias_level = level; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 422 | return 0; |
| 423 | } |
| 424 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 425 | #define WM8731_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| 426 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ |
| 427 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| 428 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ |
| 429 | SNDRV_PCM_RATE_96000) |
| 430 | |
| 431 | #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| 432 | SNDRV_PCM_FMTBIT_S24_LE) |
| 433 | |
Liam Girdwood | e550e17 | 2008-07-07 16:07:52 +0100 | [diff] [blame] | 434 | struct snd_soc_dai wm8731_dai = { |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 435 | .name = "WM8731", |
| 436 | .playback = { |
| 437 | .stream_name = "Playback", |
| 438 | .channels_min = 1, |
| 439 | .channels_max = 2, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 440 | .rates = WM8731_RATES, |
| 441 | .formats = WM8731_FORMATS,}, |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 442 | .capture = { |
| 443 | .stream_name = "Capture", |
| 444 | .channels_min = 1, |
| 445 | .channels_max = 2, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 446 | .rates = WM8731_RATES, |
| 447 | .formats = WM8731_FORMATS,}, |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 448 | .ops = { |
| 449 | .prepare = wm8731_pcm_prepare, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 450 | .hw_params = wm8731_hw_params, |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 451 | .shutdown = wm8731_shutdown, |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 452 | .digital_mute = wm8731_mute, |
| 453 | .set_sysclk = wm8731_set_dai_sysclk, |
| 454 | .set_fmt = wm8731_set_dai_fmt, |
| 455 | } |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 456 | }; |
| 457 | EXPORT_SYMBOL_GPL(wm8731_dai); |
| 458 | |
| 459 | static int wm8731_suspend(struct platform_device *pdev, pm_message_t state) |
| 460 | { |
| 461 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 462 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 463 | |
| 464 | wm8731_write(codec, WM8731_ACTIVE, 0x0); |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 465 | wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | static int wm8731_resume(struct platform_device *pdev) |
| 470 | { |
| 471 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 472 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 473 | int i; |
| 474 | u8 data[2]; |
| 475 | u16 *cache = codec->reg_cache; |
| 476 | |
| 477 | /* Sync reg_cache with the hardware */ |
| 478 | for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { |
| 479 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| 480 | data[1] = cache[i] & 0x00ff; |
| 481 | codec->hw_write(codec->control_data, data, 2); |
| 482 | } |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 483 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 484 | wm8731_set_bias_level(codec, codec->suspend_bias_level); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * initialise the WM8731 driver |
| 490 | * register the mixer and dsp interfaces with the kernel |
| 491 | */ |
| 492 | static int wm8731_init(struct snd_soc_device *socdev) |
| 493 | { |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 494 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 495 | int reg, ret = 0; |
| 496 | |
| 497 | codec->name = "WM8731"; |
| 498 | codec->owner = THIS_MODULE; |
| 499 | codec->read = wm8731_read_reg_cache; |
| 500 | codec->write = wm8731_write; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 501 | codec->set_bias_level = wm8731_set_bias_level; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 502 | codec->dai = &wm8731_dai; |
| 503 | codec->num_dai = 1; |
Mark Brown | d751b23 | 2008-06-11 13:47:06 +0100 | [diff] [blame] | 504 | codec->reg_cache_size = ARRAY_SIZE(wm8731_reg); |
Takashi Iwai | 88cb429 | 2007-02-05 14:56:20 +0100 | [diff] [blame] | 505 | codec->reg_cache = kmemdup(wm8731_reg, sizeof(wm8731_reg), GFP_KERNEL); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 506 | if (codec->reg_cache == NULL) |
| 507 | return -ENOMEM; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 508 | |
| 509 | wm8731_reset(codec); |
| 510 | |
| 511 | /* register pcms */ |
| 512 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 513 | if (ret < 0) { |
Liam Girdwood | e35115a | 2007-01-31 10:02:23 +0100 | [diff] [blame] | 514 | printk(KERN_ERR "wm8731: failed to create pcms\n"); |
| 515 | goto pcm_err; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | /* power on device */ |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 519 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 520 | |
| 521 | /* set the update bits */ |
| 522 | reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V); |
Ville Syrjala | 389619f | 2007-11-26 08:58:24 +0100 | [diff] [blame] | 523 | wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 524 | reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V); |
Ville Syrjala | 389619f | 2007-11-26 08:58:24 +0100 | [diff] [blame] | 525 | wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 526 | reg = wm8731_read_reg_cache(codec, WM8731_LINVOL); |
Ville Syrjala | 389619f | 2007-11-26 08:58:24 +0100 | [diff] [blame] | 527 | wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 528 | reg = wm8731_read_reg_cache(codec, WM8731_RINVOL); |
Ville Syrjala | 389619f | 2007-11-26 08:58:24 +0100 | [diff] [blame] | 529 | wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 530 | |
Ian Molton | 3e8e195 | 2009-01-09 00:23:21 +0000 | [diff] [blame] | 531 | snd_soc_add_controls(codec, wm8731_snd_controls, |
| 532 | ARRAY_SIZE(wm8731_snd_controls)); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 533 | wm8731_add_widgets(codec); |
Mark Brown | 968a602 | 2008-11-28 11:49:07 +0000 | [diff] [blame] | 534 | ret = snd_soc_init_card(socdev); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 535 | if (ret < 0) { |
Liam Girdwood | e35115a | 2007-01-31 10:02:23 +0100 | [diff] [blame] | 536 | printk(KERN_ERR "wm8731: failed to register card\n"); |
| 537 | goto card_err; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | return ret; |
Liam Girdwood | e35115a | 2007-01-31 10:02:23 +0100 | [diff] [blame] | 541 | |
| 542 | card_err: |
| 543 | snd_soc_free_pcms(socdev); |
| 544 | snd_soc_dapm_free(socdev); |
| 545 | pcm_err: |
| 546 | kfree(codec->reg_cache); |
| 547 | return ret; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | static struct snd_soc_device *wm8731_socdev; |
| 551 | |
Mark Brown | a8035c8 | 2009-02-16 19:35:43 +0000 | [diff] [blame^] | 552 | |
Mark Brown | d454aee | 2008-04-23 15:16:46 +0200 | [diff] [blame] | 553 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
Mark Brown | a8035c8 | 2009-02-16 19:35:43 +0000 | [diff] [blame^] | 554 | static struct i2c_driver wm8731_i2c_driver; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 555 | |
Jean Delvare | 81297c8a | 2008-09-01 18:47:01 +0100 | [diff] [blame] | 556 | static int wm8731_add_i2c_device(struct platform_device *pdev, |
| 557 | const struct wm8731_setup_data *setup) |
| 558 | { |
| 559 | struct i2c_board_info info; |
| 560 | struct i2c_adapter *adapter; |
| 561 | struct i2c_client *client; |
| 562 | int ret; |
| 563 | |
| 564 | ret = i2c_add_driver(&wm8731_i2c_driver); |
| 565 | if (ret != 0) { |
| 566 | dev_err(&pdev->dev, "can't add i2c driver\n"); |
| 567 | return ret; |
| 568 | } |
| 569 | |
| 570 | memset(&info, 0, sizeof(struct i2c_board_info)); |
| 571 | info.addr = setup->i2c_address; |
| 572 | strlcpy(info.type, "wm8731", I2C_NAME_SIZE); |
| 573 | |
| 574 | adapter = i2c_get_adapter(setup->i2c_bus); |
| 575 | if (!adapter) { |
| 576 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| 577 | setup->i2c_bus); |
| 578 | goto err_driver; |
| 579 | } |
| 580 | |
| 581 | client = i2c_new_device(adapter, &info); |
| 582 | i2c_put_adapter(adapter); |
| 583 | if (!client) { |
| 584 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| 585 | (unsigned int)info.addr); |
| 586 | goto err_driver; |
| 587 | } |
| 588 | |
| 589 | return 0; |
| 590 | |
| 591 | err_driver: |
| 592 | i2c_del_driver(&wm8731_i2c_driver); |
| 593 | return -ENODEV; |
| 594 | } |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 595 | #endif |
| 596 | |
| 597 | static int wm8731_probe(struct platform_device *pdev) |
| 598 | { |
| 599 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 600 | struct wm8731_setup_data *setup; |
| 601 | struct snd_soc_codec *codec; |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 602 | struct wm8731_priv *wm8731; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 603 | int ret = 0; |
| 604 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 605 | setup = socdev->codec_data; |
| 606 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 607 | if (codec == NULL) |
| 608 | return -ENOMEM; |
| 609 | |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 610 | wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); |
| 611 | if (wm8731 == NULL) { |
| 612 | kfree(codec); |
| 613 | return -ENOMEM; |
| 614 | } |
| 615 | |
| 616 | codec->private_data = wm8731; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 617 | socdev->card->codec = codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 618 | mutex_init(&codec->mutex); |
| 619 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 620 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 621 | |
| 622 | wm8731_socdev = socdev; |
Cliff Cai | d2a4035 | 2008-09-01 18:47:03 +0100 | [diff] [blame] | 623 | ret = -ENODEV; |
| 624 | |
Mark Brown | d454aee | 2008-04-23 15:16:46 +0200 | [diff] [blame] | 625 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 626 | if (setup->i2c_address) { |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 627 | codec->hw_write = (hw_write_t)i2c_master_send; |
Jean Delvare | 81297c8a | 2008-09-01 18:47:01 +0100 | [diff] [blame] | 628 | ret = wm8731_add_i2c_device(pdev, setup); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 629 | } |
Cliff Cai | d2a4035 | 2008-09-01 18:47:03 +0100 | [diff] [blame] | 630 | #endif |
| 631 | #if defined(CONFIG_SPI_MASTER) |
| 632 | if (setup->spi) { |
| 633 | codec->hw_write = (hw_write_t)wm8731_spi_write; |
| 634 | ret = spi_register_driver(&wm8731_spi_driver); |
| 635 | if (ret != 0) |
| 636 | printk(KERN_ERR "can't add spi driver"); |
| 637 | } |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 638 | #endif |
Jean Delvare | 3051e41 | 2008-08-25 11:49:20 +0100 | [diff] [blame] | 639 | |
| 640 | if (ret != 0) { |
| 641 | kfree(codec->private_data); |
| 642 | kfree(codec); |
| 643 | } |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 644 | return ret; |
| 645 | } |
| 646 | |
| 647 | /* power down chip */ |
| 648 | static int wm8731_remove(struct platform_device *pdev) |
| 649 | { |
| 650 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 651 | struct snd_soc_codec *codec = socdev->card->codec; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 652 | |
| 653 | if (codec->control_data) |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 654 | wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 655 | |
| 656 | snd_soc_free_pcms(socdev); |
| 657 | snd_soc_dapm_free(socdev); |
Mark Brown | d454aee | 2008-04-23 15:16:46 +0200 | [diff] [blame] | 658 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
Jean Delvare | 81297c8a | 2008-09-01 18:47:01 +0100 | [diff] [blame] | 659 | i2c_unregister_device(codec->control_data); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 660 | i2c_del_driver(&wm8731_i2c_driver); |
| 661 | #endif |
Cliff Cai | d2a4035 | 2008-09-01 18:47:03 +0100 | [diff] [blame] | 662 | #if defined(CONFIG_SPI_MASTER) |
| 663 | spi_unregister_driver(&wm8731_spi_driver); |
| 664 | #endif |
Frank Mandarino | b36d61d | 2007-02-02 17:14:56 +0100 | [diff] [blame] | 665 | kfree(codec->private_data); |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 666 | kfree(codec); |
| 667 | |
| 668 | return 0; |
| 669 | } |
| 670 | |
| 671 | struct snd_soc_codec_device soc_codec_dev_wm8731 = { |
| 672 | .probe = wm8731_probe, |
| 673 | .remove = wm8731_remove, |
| 674 | .suspend = wm8731_suspend, |
| 675 | .resume = wm8731_resume, |
| 676 | }; |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 677 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731); |
| 678 | |
Mark Brown | a8035c8 | 2009-02-16 19:35:43 +0000 | [diff] [blame^] | 679 | #if defined(CONFIG_SPI_MASTER) |
| 680 | static int __devinit wm8731_spi_probe(struct spi_device *spi) |
| 681 | { |
| 682 | struct snd_soc_device *socdev = wm8731_socdev; |
| 683 | struct snd_soc_codec *codec = socdev->card->codec; |
| 684 | int ret; |
| 685 | |
| 686 | codec->control_data = spi; |
| 687 | |
| 688 | ret = wm8731_init(socdev); |
| 689 | if (ret < 0) |
| 690 | dev_err(&spi->dev, "failed to initialise WM8731\n"); |
| 691 | |
| 692 | return ret; |
| 693 | } |
| 694 | |
| 695 | static int __devexit wm8731_spi_remove(struct spi_device *spi) |
| 696 | { |
| 697 | return 0; |
| 698 | } |
| 699 | |
| 700 | static struct spi_driver wm8731_spi_driver = { |
| 701 | .driver = { |
| 702 | .name = "wm8731", |
| 703 | .bus = &spi_bus_type, |
| 704 | .owner = THIS_MODULE, |
| 705 | }, |
| 706 | .probe = wm8731_spi_probe, |
| 707 | .remove = __devexit_p(wm8731_spi_remove), |
| 708 | }; |
| 709 | |
| 710 | static int wm8731_spi_write(struct spi_device *spi, const char *data, int len) |
| 711 | { |
| 712 | struct spi_transfer t; |
| 713 | struct spi_message m; |
| 714 | u8 msg[2]; |
| 715 | |
| 716 | if (len <= 0) |
| 717 | return 0; |
| 718 | |
| 719 | msg[0] = data[0]; |
| 720 | msg[1] = data[1]; |
| 721 | |
| 722 | spi_message_init(&m); |
| 723 | memset(&t, 0, (sizeof t)); |
| 724 | |
| 725 | t.tx_buf = &msg[0]; |
| 726 | t.len = len; |
| 727 | |
| 728 | spi_message_add_tail(&t, &m); |
| 729 | spi_sync(spi, &m); |
| 730 | |
| 731 | return len; |
| 732 | } |
| 733 | #endif /* CONFIG_SPI_MASTER */ |
| 734 | |
| 735 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 736 | /* |
| 737 | * WM8731 2 wire address is determined by GPIO5 |
| 738 | * state during powerup. |
| 739 | * low = 0x1a |
| 740 | * high = 0x1b |
| 741 | */ |
| 742 | |
| 743 | static int wm8731_i2c_probe(struct i2c_client *i2c, |
| 744 | const struct i2c_device_id *id) |
| 745 | { |
| 746 | struct snd_soc_device *socdev = wm8731_socdev; |
| 747 | struct snd_soc_codec *codec = socdev->card->codec; |
| 748 | int ret; |
| 749 | |
| 750 | i2c_set_clientdata(i2c, codec); |
| 751 | codec->control_data = i2c; |
| 752 | |
| 753 | ret = wm8731_init(socdev); |
| 754 | if (ret < 0) |
| 755 | pr_err("failed to initialise WM8731\n"); |
| 756 | |
| 757 | return ret; |
| 758 | } |
| 759 | |
| 760 | static int wm8731_i2c_remove(struct i2c_client *client) |
| 761 | { |
| 762 | struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| 763 | kfree(codec->reg_cache); |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | static const struct i2c_device_id wm8731_i2c_id[] = { |
| 768 | { "wm8731", 0 }, |
| 769 | { } |
| 770 | }; |
| 771 | MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); |
| 772 | |
| 773 | static struct i2c_driver wm8731_i2c_driver = { |
| 774 | .driver = { |
| 775 | .name = "WM8731 I2C Codec", |
| 776 | .owner = THIS_MODULE, |
| 777 | }, |
| 778 | .probe = wm8731_i2c_probe, |
| 779 | .remove = wm8731_i2c_remove, |
| 780 | .id_table = wm8731_i2c_id, |
| 781 | }; |
| 782 | #endif |
| 783 | |
Takashi Iwai | c9b3a40 | 2008-12-10 07:47:22 +0100 | [diff] [blame] | 784 | static int __init wm8731_modinit(void) |
Mark Brown | 64089b8 | 2008-12-08 19:17:58 +0000 | [diff] [blame] | 785 | { |
| 786 | return snd_soc_register_dai(&wm8731_dai); |
| 787 | } |
| 788 | module_init(wm8731_modinit); |
| 789 | |
| 790 | static void __exit wm8731_exit(void) |
| 791 | { |
| 792 | snd_soc_unregister_dai(&wm8731_dai); |
| 793 | } |
| 794 | module_exit(wm8731_exit); |
| 795 | |
Richard Purdie | 40e0aa6 | 2006-10-06 18:36:07 +0200 | [diff] [blame] | 796 | MODULE_DESCRIPTION("ASoC WM8731 driver"); |
| 797 | MODULE_AUTHOR("Richard Purdie"); |
| 798 | MODULE_LICENSE("GPL"); |