Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 1 | /* |
| 2 | * File: sound/soc/codecs/ssm2602.c |
| 3 | * Author: Cliff Cai <Cliff.Cai@analog.com> |
| 4 | * |
| 5 | * Created: Tue June 06 2008 |
| 6 | * Description: Driver for ssm2602 sound chip |
| 7 | * |
| 8 | * Modified: |
| 9 | * Copyright 2008 Analog Devices Inc. |
| 10 | * |
| 11 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, see the file COPYING, or write |
| 25 | * to the Free Software Foundation, Inc., |
| 26 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 27 | */ |
| 28 | |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/moduleparam.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/pm.h> |
| 34 | #include <linux/i2c.h> |
| 35 | #include <linux/platform_device.h> |
| 36 | #include <sound/core.h> |
| 37 | #include <sound/pcm.h> |
| 38 | #include <sound/pcm_params.h> |
| 39 | #include <sound/soc.h> |
| 40 | #include <sound/soc-dapm.h> |
| 41 | #include <sound/initval.h> |
| 42 | |
| 43 | #include "ssm2602.h" |
| 44 | |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 45 | #define SSM2602_VERSION "0.1" |
| 46 | |
| 47 | struct snd_soc_codec_device soc_codec_dev_ssm2602; |
| 48 | |
| 49 | /* codec private data */ |
| 50 | struct ssm2602_priv { |
| 51 | unsigned int sysclk; |
| 52 | struct snd_pcm_substream *master_substream; |
| 53 | struct snd_pcm_substream *slave_substream; |
| 54 | }; |
| 55 | |
| 56 | /* |
| 57 | * ssm2602 register cache |
| 58 | * We can't read the ssm2602 register space when we are |
| 59 | * using 2 wire for device control, so we cache them instead. |
| 60 | * There is no point in caching the reset register |
| 61 | */ |
| 62 | static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = { |
| 63 | 0x0017, 0x0017, 0x0079, 0x0079, |
| 64 | 0x0000, 0x0000, 0x0000, 0x000a, |
| 65 | 0x0000, 0x0000 |
| 66 | }; |
| 67 | |
| 68 | /* |
| 69 | * read ssm2602 register cache |
| 70 | */ |
| 71 | static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec, |
| 72 | unsigned int reg) |
| 73 | { |
| 74 | u16 *cache = codec->reg_cache; |
| 75 | if (reg == SSM2602_RESET) |
| 76 | return 0; |
| 77 | if (reg >= SSM2602_CACHEREGNUM) |
| 78 | return -1; |
| 79 | return cache[reg]; |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * write ssm2602 register cache |
| 84 | */ |
| 85 | static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec, |
| 86 | u16 reg, unsigned int value) |
| 87 | { |
| 88 | u16 *cache = codec->reg_cache; |
| 89 | if (reg >= SSM2602_CACHEREGNUM) |
| 90 | return; |
| 91 | cache[reg] = value; |
| 92 | } |
| 93 | |
| 94 | /* |
| 95 | * write to the ssm2602 register space |
| 96 | */ |
| 97 | static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg, |
| 98 | unsigned int value) |
| 99 | { |
| 100 | u8 data[2]; |
| 101 | |
| 102 | /* data is |
| 103 | * D15..D9 ssm2602 register offset |
| 104 | * D8...D0 register data |
| 105 | */ |
| 106 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| 107 | data[1] = value & 0x00ff; |
| 108 | |
| 109 | ssm2602_write_reg_cache(codec, reg, value); |
| 110 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
| 111 | return 0; |
| 112 | else |
| 113 | return -EIO; |
| 114 | } |
| 115 | |
| 116 | #define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0) |
| 117 | |
| 118 | /*Appending several "None"s just for OSS mixer use*/ |
| 119 | static const char *ssm2602_input_select[] = { |
| 120 | "Line", "Mic", "None", "None", "None", |
| 121 | "None", "None", "None", |
| 122 | }; |
| 123 | |
| 124 | static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| 125 | |
| 126 | static const struct soc_enum ssm2602_enum[] = { |
| 127 | SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select), |
| 128 | SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph), |
| 129 | }; |
| 130 | |
| 131 | static const struct snd_kcontrol_new ssm2602_snd_controls[] = { |
| 132 | |
| 133 | SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V, |
| 134 | 0, 127, 0), |
| 135 | SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V, |
| 136 | 7, 1, 0), |
| 137 | |
| 138 | SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0), |
| 139 | SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1), |
| 140 | |
| 141 | SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0), |
| 142 | SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1), |
| 143 | |
| 144 | SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1), |
| 145 | |
| 146 | SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1), |
| 147 | SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0), |
| 148 | |
| 149 | SOC_ENUM("Capture Source", ssm2602_enum[0]), |
| 150 | |
| 151 | SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]), |
| 152 | }; |
| 153 | |
| 154 | /* add non dapm controls */ |
| 155 | static int ssm2602_add_controls(struct snd_soc_codec *codec) |
| 156 | { |
| 157 | int err, i; |
| 158 | |
| 159 | for (i = 0; i < ARRAY_SIZE(ssm2602_snd_controls); i++) { |
| 160 | err = snd_ctl_add(codec->card, |
| 161 | snd_soc_cnew(&ssm2602_snd_controls[i], codec, NULL)); |
| 162 | if (err < 0) |
| 163 | return err; |
| 164 | } |
| 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | /* Output Mixer */ |
| 170 | static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = { |
| 171 | SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0), |
| 172 | SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0), |
| 173 | SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0), |
| 174 | }; |
| 175 | |
| 176 | /* Input mux */ |
| 177 | static const struct snd_kcontrol_new ssm2602_input_mux_controls = |
| 178 | SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]); |
| 179 | |
| 180 | static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = { |
| 181 | SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1, |
| 182 | &ssm2602_output_mixer_controls[0], |
| 183 | ARRAY_SIZE(ssm2602_output_mixer_controls)), |
| 184 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1), |
| 185 | SND_SOC_DAPM_OUTPUT("LOUT"), |
| 186 | SND_SOC_DAPM_OUTPUT("LHPOUT"), |
| 187 | SND_SOC_DAPM_OUTPUT("ROUT"), |
| 188 | SND_SOC_DAPM_OUTPUT("RHPOUT"), |
| 189 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1), |
| 190 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls), |
| 191 | SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0), |
| 192 | SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1), |
| 193 | SND_SOC_DAPM_INPUT("MICIN"), |
| 194 | SND_SOC_DAPM_INPUT("RLINEIN"), |
| 195 | SND_SOC_DAPM_INPUT("LLINEIN"), |
| 196 | }; |
| 197 | |
| 198 | static const struct snd_soc_dapm_route audio_conn[] = { |
| 199 | /* output mixer */ |
| 200 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, |
| 201 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, |
| 202 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, |
| 203 | |
| 204 | /* outputs */ |
| 205 | {"RHPOUT", NULL, "Output Mixer"}, |
| 206 | {"ROUT", NULL, "Output Mixer"}, |
| 207 | {"LHPOUT", NULL, "Output Mixer"}, |
| 208 | {"LOUT", NULL, "Output Mixer"}, |
| 209 | |
| 210 | /* input mux */ |
| 211 | {"Input Mux", "Line", "Line Input"}, |
| 212 | {"Input Mux", "Mic", "Mic Bias"}, |
| 213 | {"ADC", NULL, "Input Mux"}, |
| 214 | |
| 215 | /* inputs */ |
| 216 | {"Line Input", NULL, "LLINEIN"}, |
| 217 | {"Line Input", NULL, "RLINEIN"}, |
| 218 | {"Mic Bias", NULL, "MICIN"}, |
| 219 | }; |
| 220 | |
| 221 | static int ssm2602_add_widgets(struct snd_soc_codec *codec) |
| 222 | { |
| 223 | snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets, |
| 224 | ARRAY_SIZE(ssm2602_dapm_widgets)); |
| 225 | |
| 226 | snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn)); |
| 227 | |
| 228 | snd_soc_dapm_new_widgets(codec); |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | struct _coeff_div { |
| 233 | u32 mclk; |
| 234 | u32 rate; |
| 235 | u16 fs; |
| 236 | u8 sr:4; |
| 237 | u8 bosr:1; |
| 238 | u8 usb:1; |
| 239 | }; |
| 240 | |
| 241 | /* codec mclk clock divider coefficients */ |
| 242 | static const struct _coeff_div coeff_div[] = { |
| 243 | /* 48k */ |
| 244 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, |
| 245 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, |
| 246 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, |
| 247 | |
| 248 | /* 32k */ |
| 249 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, |
| 250 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, |
| 251 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
| 252 | |
| 253 | /* 8k */ |
| 254 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, |
| 255 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, |
| 256 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, |
| 257 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, |
| 258 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, |
| 259 | |
| 260 | /* 96k */ |
| 261 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, |
| 262 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, |
| 263 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, |
| 264 | |
| 265 | /* 44.1k */ |
| 266 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, |
| 267 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, |
| 268 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, |
| 269 | |
| 270 | /* 88.2k */ |
| 271 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, |
| 272 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, |
| 273 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, |
| 274 | }; |
| 275 | |
| 276 | static inline int get_coeff(int mclk, int rate) |
| 277 | { |
| 278 | int i; |
| 279 | |
| 280 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| 281 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| 282 | return i; |
| 283 | } |
| 284 | return i; |
| 285 | } |
| 286 | |
| 287 | static int ssm2602_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame^] | 288 | struct snd_pcm_hw_params *params, |
| 289 | struct snd_soc_dai *dai) |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 290 | { |
| 291 | u16 srate; |
| 292 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 293 | struct snd_soc_device *socdev = rtd->socdev; |
| 294 | struct snd_soc_codec *codec = socdev->codec; |
| 295 | struct ssm2602_priv *ssm2602 = codec->private_data; |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 296 | struct i2c_client *i2c = codec->control_data; |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 297 | u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3; |
| 298 | int i = get_coeff(ssm2602->sysclk, params_rate(params)); |
| 299 | |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 300 | if (substream == ssm2602->slave_substream) { |
| 301 | dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n"); |
| 302 | return 0; |
| 303 | } |
| 304 | |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 305 | /*no match is found*/ |
| 306 | if (i == ARRAY_SIZE(coeff_div)) |
| 307 | return -EINVAL; |
| 308 | |
| 309 | srate = (coeff_div[i].sr << 2) | |
| 310 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; |
| 311 | |
| 312 | ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| 313 | ssm2602_write(codec, SSM2602_SRATE, srate); |
| 314 | |
| 315 | /* bit size */ |
| 316 | switch (params_format(params)) { |
| 317 | case SNDRV_PCM_FORMAT_S16_LE: |
| 318 | break; |
| 319 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 320 | iface |= 0x0004; |
| 321 | break; |
| 322 | case SNDRV_PCM_FORMAT_S24_LE: |
| 323 | iface |= 0x0008; |
| 324 | break; |
| 325 | case SNDRV_PCM_FORMAT_S32_LE: |
| 326 | iface |= 0x000c; |
| 327 | break; |
| 328 | } |
| 329 | ssm2602_write(codec, SSM2602_IFACE, iface); |
| 330 | ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); |
| 331 | return 0; |
| 332 | } |
| 333 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame^] | 334 | static int ssm2602_startup(struct snd_pcm_substream *substream, |
| 335 | struct snd_soc_dai *dai) |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 336 | { |
| 337 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 338 | struct snd_soc_device *socdev = rtd->socdev; |
| 339 | struct snd_soc_codec *codec = socdev->codec; |
| 340 | struct ssm2602_priv *ssm2602 = codec->private_data; |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 341 | struct i2c_client *i2c = codec->control_data; |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 342 | struct snd_pcm_runtime *master_runtime; |
| 343 | |
| 344 | /* The DAI has shared clocks so if we already have a playback or |
| 345 | * capture going then constrain this substream to match it. |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 346 | * TODO: the ssm2602 allows pairs of non-matching PB/REC rates |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 347 | */ |
| 348 | if (ssm2602->master_substream) { |
| 349 | master_runtime = ssm2602->master_substream->runtime; |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 350 | dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n", |
| 351 | master_runtime->sample_bits, |
| 352 | master_runtime->rate); |
| 353 | |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 354 | snd_pcm_hw_constraint_minmax(substream->runtime, |
| 355 | SNDRV_PCM_HW_PARAM_RATE, |
| 356 | master_runtime->rate, |
| 357 | master_runtime->rate); |
| 358 | |
| 359 | snd_pcm_hw_constraint_minmax(substream->runtime, |
| 360 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 361 | master_runtime->sample_bits, |
| 362 | master_runtime->sample_bits); |
| 363 | |
| 364 | ssm2602->slave_substream = substream; |
| 365 | } else |
| 366 | ssm2602->master_substream = substream; |
| 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame^] | 371 | static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream, |
| 372 | struct snd_soc_dai *dai) |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 373 | { |
| 374 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 375 | struct snd_soc_device *socdev = rtd->socdev; |
| 376 | struct snd_soc_codec *codec = socdev->codec; |
| 377 | /* set active */ |
| 378 | ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame^] | 383 | static void ssm2602_shutdown(struct snd_pcm_substream *substream, |
| 384 | struct snd_soc_dai *dai) |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 385 | { |
| 386 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 387 | struct snd_soc_device *socdev = rtd->socdev; |
| 388 | struct snd_soc_codec *codec = socdev->codec; |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 389 | struct ssm2602_priv *ssm2602 = codec->private_data; |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 390 | /* deactivate */ |
| 391 | if (!codec->active) |
| 392 | ssm2602_write(codec, SSM2602_ACTIVE, 0); |
Karl Beldan | faab5a3 | 2008-11-20 15:39:27 +0100 | [diff] [blame] | 393 | |
| 394 | if (ssm2602->master_substream == substream) |
| 395 | ssm2602->master_substream = ssm2602->slave_substream; |
| 396 | |
| 397 | ssm2602->slave_substream = NULL; |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | static int ssm2602_mute(struct snd_soc_dai *dai, int mute) |
| 401 | { |
| 402 | struct snd_soc_codec *codec = dai->codec; |
| 403 | u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE; |
| 404 | if (mute) |
| 405 | ssm2602_write(codec, SSM2602_APDIGI, |
| 406 | mute_reg | APDIGI_ENABLE_DAC_MUTE); |
| 407 | else |
| 408 | ssm2602_write(codec, SSM2602_APDIGI, mute_reg); |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
| 413 | int clk_id, unsigned int freq, int dir) |
| 414 | { |
| 415 | struct snd_soc_codec *codec = codec_dai->codec; |
| 416 | struct ssm2602_priv *ssm2602 = codec->private_data; |
| 417 | switch (freq) { |
| 418 | case 11289600: |
| 419 | case 12000000: |
| 420 | case 12288000: |
| 421 | case 16934400: |
| 422 | case 18432000: |
| 423 | ssm2602->sysclk = freq; |
| 424 | return 0; |
| 425 | } |
| 426 | return -EINVAL; |
| 427 | } |
| 428 | |
| 429 | static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| 430 | unsigned int fmt) |
| 431 | { |
| 432 | struct snd_soc_codec *codec = codec_dai->codec; |
| 433 | u16 iface = 0; |
| 434 | |
| 435 | /* set master/slave audio interface */ |
| 436 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 437 | case SND_SOC_DAIFMT_CBM_CFM: |
| 438 | iface |= 0x0040; |
| 439 | break; |
| 440 | case SND_SOC_DAIFMT_CBS_CFS: |
| 441 | break; |
| 442 | default: |
| 443 | return -EINVAL; |
| 444 | } |
| 445 | |
| 446 | /* interface format */ |
| 447 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 448 | case SND_SOC_DAIFMT_I2S: |
| 449 | iface |= 0x0002; |
| 450 | break; |
| 451 | case SND_SOC_DAIFMT_RIGHT_J: |
| 452 | break; |
| 453 | case SND_SOC_DAIFMT_LEFT_J: |
| 454 | iface |= 0x0001; |
| 455 | break; |
| 456 | case SND_SOC_DAIFMT_DSP_A: |
| 457 | iface |= 0x0003; |
| 458 | break; |
| 459 | case SND_SOC_DAIFMT_DSP_B: |
| 460 | iface |= 0x0013; |
| 461 | break; |
| 462 | default: |
| 463 | return -EINVAL; |
| 464 | } |
| 465 | |
| 466 | /* clock inversion */ |
| 467 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 468 | case SND_SOC_DAIFMT_NB_NF: |
| 469 | break; |
| 470 | case SND_SOC_DAIFMT_IB_IF: |
| 471 | iface |= 0x0090; |
| 472 | break; |
| 473 | case SND_SOC_DAIFMT_IB_NF: |
| 474 | iface |= 0x0080; |
| 475 | break; |
| 476 | case SND_SOC_DAIFMT_NB_IF: |
| 477 | iface |= 0x0010; |
| 478 | break; |
| 479 | default: |
| 480 | return -EINVAL; |
| 481 | } |
| 482 | |
| 483 | /* set iface */ |
| 484 | ssm2602_write(codec, SSM2602_IFACE, iface); |
| 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | static int ssm2602_set_bias_level(struct snd_soc_codec *codec, |
| 489 | enum snd_soc_bias_level level) |
| 490 | { |
| 491 | u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f; |
| 492 | |
| 493 | switch (level) { |
| 494 | case SND_SOC_BIAS_ON: |
| 495 | /* vref/mid, osc on, dac unmute */ |
| 496 | ssm2602_write(codec, SSM2602_PWR, reg); |
| 497 | break; |
| 498 | case SND_SOC_BIAS_PREPARE: |
| 499 | break; |
| 500 | case SND_SOC_BIAS_STANDBY: |
| 501 | /* everything off except vref/vmid, */ |
| 502 | ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN); |
| 503 | break; |
| 504 | case SND_SOC_BIAS_OFF: |
| 505 | /* everything off, dac mute, inactive */ |
| 506 | ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| 507 | ssm2602_write(codec, SSM2602_PWR, 0xffff); |
| 508 | break; |
| 509 | |
| 510 | } |
| 511 | codec->bias_level = level; |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| 516 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ |
| 517 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| 518 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ |
| 519 | SNDRV_PCM_RATE_96000) |
| 520 | |
Karl Beldan | 5de27b6 | 2008-11-20 15:39:31 +0100 | [diff] [blame] | 521 | #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| 522 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
| 523 | |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 524 | struct snd_soc_dai ssm2602_dai = { |
| 525 | .name = "SSM2602", |
| 526 | .playback = { |
| 527 | .stream_name = "Playback", |
| 528 | .channels_min = 2, |
| 529 | .channels_max = 2, |
| 530 | .rates = SSM2602_RATES, |
Karl Beldan | 5de27b6 | 2008-11-20 15:39:31 +0100 | [diff] [blame] | 531 | .formats = SSM2602_FORMATS,}, |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 532 | .capture = { |
| 533 | .stream_name = "Capture", |
| 534 | .channels_min = 2, |
| 535 | .channels_max = 2, |
| 536 | .rates = SSM2602_RATES, |
Karl Beldan | 5de27b6 | 2008-11-20 15:39:31 +0100 | [diff] [blame] | 537 | .formats = SSM2602_FORMATS,}, |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 538 | .ops = { |
| 539 | .startup = ssm2602_startup, |
| 540 | .prepare = ssm2602_pcm_prepare, |
| 541 | .hw_params = ssm2602_hw_params, |
| 542 | .shutdown = ssm2602_shutdown, |
Cliff Cai | b713821 | 2008-09-05 18:09:57 +0800 | [diff] [blame] | 543 | .digital_mute = ssm2602_mute, |
| 544 | .set_sysclk = ssm2602_set_dai_sysclk, |
| 545 | .set_fmt = ssm2602_set_dai_fmt, |
| 546 | } |
| 547 | }; |
| 548 | EXPORT_SYMBOL_GPL(ssm2602_dai); |
| 549 | |
| 550 | static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state) |
| 551 | { |
| 552 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 553 | struct snd_soc_codec *codec = socdev->codec; |
| 554 | |
| 555 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | static int ssm2602_resume(struct platform_device *pdev) |
| 560 | { |
| 561 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 562 | struct snd_soc_codec *codec = socdev->codec; |
| 563 | int i; |
| 564 | u8 data[2]; |
| 565 | u16 *cache = codec->reg_cache; |
| 566 | |
| 567 | /* Sync reg_cache with the hardware */ |
| 568 | for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) { |
| 569 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| 570 | data[1] = cache[i] & 0x00ff; |
| 571 | codec->hw_write(codec->control_data, data, 2); |
| 572 | } |
| 573 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 574 | ssm2602_set_bias_level(codec, codec->suspend_bias_level); |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | /* |
| 579 | * initialise the ssm2602 driver |
| 580 | * register the mixer and dsp interfaces with the kernel |
| 581 | */ |
| 582 | static int ssm2602_init(struct snd_soc_device *socdev) |
| 583 | { |
| 584 | struct snd_soc_codec *codec = socdev->codec; |
| 585 | int reg, ret = 0; |
| 586 | |
| 587 | codec->name = "SSM2602"; |
| 588 | codec->owner = THIS_MODULE; |
| 589 | codec->read = ssm2602_read_reg_cache; |
| 590 | codec->write = ssm2602_write; |
| 591 | codec->set_bias_level = ssm2602_set_bias_level; |
| 592 | codec->dai = &ssm2602_dai; |
| 593 | codec->num_dai = 1; |
| 594 | codec->reg_cache_size = sizeof(ssm2602_reg); |
| 595 | codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg), |
| 596 | GFP_KERNEL); |
| 597 | if (codec->reg_cache == NULL) |
| 598 | return -ENOMEM; |
| 599 | |
| 600 | ssm2602_reset(codec); |
| 601 | |
| 602 | /* register pcms */ |
| 603 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 604 | if (ret < 0) { |
| 605 | pr_err("ssm2602: failed to create pcms\n"); |
| 606 | goto pcm_err; |
| 607 | } |
| 608 | /*power on device*/ |
| 609 | ssm2602_write(codec, SSM2602_ACTIVE, 0); |
| 610 | /* set the update bits */ |
| 611 | reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL); |
| 612 | ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH); |
| 613 | reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL); |
| 614 | ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH); |
| 615 | reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V); |
| 616 | ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH); |
| 617 | reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V); |
| 618 | ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH); |
| 619 | /*select Line in as default input*/ |
| 620 | ssm2602_write(codec, SSM2602_APANA, |
| 621 | APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC | |
| 622 | APANA_ENABLE_MIC_BOOST); |
| 623 | ssm2602_write(codec, SSM2602_PWR, 0); |
| 624 | |
| 625 | ssm2602_add_controls(codec); |
| 626 | ssm2602_add_widgets(codec); |
| 627 | ret = snd_soc_register_card(socdev); |
| 628 | if (ret < 0) { |
| 629 | pr_err("ssm2602: failed to register card\n"); |
| 630 | goto card_err; |
| 631 | } |
| 632 | |
| 633 | return ret; |
| 634 | |
| 635 | card_err: |
| 636 | snd_soc_free_pcms(socdev); |
| 637 | snd_soc_dapm_free(socdev); |
| 638 | pcm_err: |
| 639 | kfree(codec->reg_cache); |
| 640 | return ret; |
| 641 | } |
| 642 | |
| 643 | static struct snd_soc_device *ssm2602_socdev; |
| 644 | |
| 645 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 646 | /* |
| 647 | * ssm2602 2 wire address is determined by GPIO5 |
| 648 | * state during powerup. |
| 649 | * low = 0x1a |
| 650 | * high = 0x1b |
| 651 | */ |
| 652 | static int ssm2602_i2c_probe(struct i2c_client *i2c, |
| 653 | const struct i2c_device_id *id) |
| 654 | { |
| 655 | struct snd_soc_device *socdev = ssm2602_socdev; |
| 656 | struct snd_soc_codec *codec = socdev->codec; |
| 657 | int ret; |
| 658 | |
| 659 | i2c_set_clientdata(i2c, codec); |
| 660 | codec->control_data = i2c; |
| 661 | |
| 662 | ret = ssm2602_init(socdev); |
| 663 | if (ret < 0) |
| 664 | pr_err("failed to initialise SSM2602\n"); |
| 665 | |
| 666 | return ret; |
| 667 | } |
| 668 | |
| 669 | static int ssm2602_i2c_remove(struct i2c_client *client) |
| 670 | { |
| 671 | struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| 672 | kfree(codec->reg_cache); |
| 673 | return 0; |
| 674 | } |
| 675 | |
| 676 | static const struct i2c_device_id ssm2602_i2c_id[] = { |
| 677 | { "ssm2602", 0 }, |
| 678 | { } |
| 679 | }; |
| 680 | MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id); |
| 681 | /* corgi i2c codec control layer */ |
| 682 | static struct i2c_driver ssm2602_i2c_driver = { |
| 683 | .driver = { |
| 684 | .name = "SSM2602 I2C Codec", |
| 685 | .owner = THIS_MODULE, |
| 686 | }, |
| 687 | .probe = ssm2602_i2c_probe, |
| 688 | .remove = ssm2602_i2c_remove, |
| 689 | .id_table = ssm2602_i2c_id, |
| 690 | }; |
| 691 | |
| 692 | static int ssm2602_add_i2c_device(struct platform_device *pdev, |
| 693 | const struct ssm2602_setup_data *setup) |
| 694 | { |
| 695 | struct i2c_board_info info; |
| 696 | struct i2c_adapter *adapter; |
| 697 | struct i2c_client *client; |
| 698 | int ret; |
| 699 | |
| 700 | ret = i2c_add_driver(&ssm2602_i2c_driver); |
| 701 | if (ret != 0) { |
| 702 | dev_err(&pdev->dev, "can't add i2c driver\n"); |
| 703 | return ret; |
| 704 | } |
| 705 | memset(&info, 0, sizeof(struct i2c_board_info)); |
| 706 | info.addr = setup->i2c_address; |
| 707 | strlcpy(info.type, "ssm2602", I2C_NAME_SIZE); |
| 708 | adapter = i2c_get_adapter(setup->i2c_bus); |
| 709 | if (!adapter) { |
| 710 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| 711 | setup->i2c_bus); |
| 712 | goto err_driver; |
| 713 | } |
| 714 | client = i2c_new_device(adapter, &info); |
| 715 | i2c_put_adapter(adapter); |
| 716 | if (!client) { |
| 717 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| 718 | (unsigned int)info.addr); |
| 719 | goto err_driver; |
| 720 | } |
| 721 | return 0; |
| 722 | err_driver: |
| 723 | i2c_del_driver(&ssm2602_i2c_driver); |
| 724 | return -ENODEV; |
| 725 | } |
| 726 | #endif |
| 727 | |
| 728 | static int ssm2602_probe(struct platform_device *pdev) |
| 729 | { |
| 730 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 731 | struct ssm2602_setup_data *setup; |
| 732 | struct snd_soc_codec *codec; |
| 733 | struct ssm2602_priv *ssm2602; |
| 734 | int ret = 0; |
| 735 | |
| 736 | pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION); |
| 737 | |
| 738 | setup = socdev->codec_data; |
| 739 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 740 | if (codec == NULL) |
| 741 | return -ENOMEM; |
| 742 | |
| 743 | ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL); |
| 744 | if (ssm2602 == NULL) { |
| 745 | kfree(codec); |
| 746 | return -ENOMEM; |
| 747 | } |
| 748 | |
| 749 | codec->private_data = ssm2602; |
| 750 | socdev->codec = codec; |
| 751 | mutex_init(&codec->mutex); |
| 752 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 753 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 754 | |
| 755 | ssm2602_socdev = socdev; |
| 756 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 757 | if (setup->i2c_address) { |
| 758 | codec->hw_write = (hw_write_t)i2c_master_send; |
| 759 | ret = ssm2602_add_i2c_device(pdev, setup); |
| 760 | } |
| 761 | #else |
| 762 | /* other interfaces */ |
| 763 | #endif |
| 764 | return ret; |
| 765 | } |
| 766 | |
| 767 | /* remove everything here */ |
| 768 | static int ssm2602_remove(struct platform_device *pdev) |
| 769 | { |
| 770 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 771 | struct snd_soc_codec *codec = socdev->codec; |
| 772 | |
| 773 | if (codec->control_data) |
| 774 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 775 | |
| 776 | snd_soc_free_pcms(socdev); |
| 777 | snd_soc_dapm_free(socdev); |
| 778 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 779 | i2c_unregister_device(codec->control_data); |
| 780 | i2c_del_driver(&ssm2602_i2c_driver); |
| 781 | #endif |
| 782 | kfree(codec->private_data); |
| 783 | kfree(codec); |
| 784 | |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | struct snd_soc_codec_device soc_codec_dev_ssm2602 = { |
| 789 | .probe = ssm2602_probe, |
| 790 | .remove = ssm2602_remove, |
| 791 | .suspend = ssm2602_suspend, |
| 792 | .resume = ssm2602_resume, |
| 793 | }; |
| 794 | EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602); |
| 795 | |
| 796 | MODULE_DESCRIPTION("ASoC ssm2602 driver"); |
| 797 | MODULE_AUTHOR("Cliff Cai"); |
| 798 | MODULE_LICENSE("GPL"); |