Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 1 | /* |
| 2 | * wm8804.c -- WM8804 S/PDIF transceiver driver |
| 3 | * |
Mark Brown | 656baae | 2012-05-23 12:39:07 +0100 | [diff] [blame] | 4 | * Copyright 2010-11 Wolfson Microelectronics plc |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 5 | * |
| 6 | * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/moduleparam.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/pm.h> |
| 18 | #include <linux/i2c.h> |
Mark Brown | d2dd054 | 2011-08-29 14:23:05 +0100 | [diff] [blame] | 19 | #include <linux/of_device.h> |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 20 | #include <linux/spi/spi.h> |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 21 | #include <linux/regmap.h> |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 22 | #include <linux/regulator/consumer.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <sound/core.h> |
| 25 | #include <sound/pcm.h> |
| 26 | #include <sound/pcm_params.h> |
| 27 | #include <sound/soc.h> |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 28 | #include <sound/initval.h> |
| 29 | #include <sound/tlv.h> |
| 30 | |
| 31 | #include "wm8804.h" |
| 32 | |
| 33 | #define WM8804_NUM_SUPPLIES 2 |
| 34 | static const char *wm8804_supply_names[WM8804_NUM_SUPPLIES] = { |
| 35 | "PVDD", |
| 36 | "DVDD" |
| 37 | }; |
| 38 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 39 | static const struct reg_default wm8804_reg_defaults[] = { |
| 40 | { 3, 0x21 }, /* R3 - PLL1 */ |
| 41 | { 4, 0xFD }, /* R4 - PLL2 */ |
| 42 | { 5, 0x36 }, /* R5 - PLL3 */ |
| 43 | { 6, 0x07 }, /* R6 - PLL4 */ |
| 44 | { 7, 0x16 }, /* R7 - PLL5 */ |
| 45 | { 8, 0x18 }, /* R8 - PLL6 */ |
| 46 | { 9, 0xFF }, /* R9 - SPDMODE */ |
| 47 | { 10, 0x00 }, /* R10 - INTMASK */ |
| 48 | { 18, 0x00 }, /* R18 - SPDTX1 */ |
| 49 | { 19, 0x00 }, /* R19 - SPDTX2 */ |
| 50 | { 20, 0x00 }, /* R20 - SPDTX3 */ |
| 51 | { 21, 0x71 }, /* R21 - SPDTX4 */ |
| 52 | { 22, 0x0B }, /* R22 - SPDTX5 */ |
| 53 | { 23, 0x70 }, /* R23 - GPO0 */ |
| 54 | { 24, 0x57 }, /* R24 - GPO1 */ |
| 55 | { 26, 0x42 }, /* R26 - GPO2 */ |
| 56 | { 27, 0x06 }, /* R27 - AIFTX */ |
| 57 | { 28, 0x06 }, /* R28 - AIFRX */ |
| 58 | { 29, 0x80 }, /* R29 - SPDRX1 */ |
| 59 | { 30, 0x07 }, /* R30 - PWRDN */ |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 60 | }; |
| 61 | |
| 62 | struct wm8804_priv { |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 63 | struct regmap *regmap; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 64 | struct regulator_bulk_data supplies[WM8804_NUM_SUPPLIES]; |
| 65 | struct notifier_block disable_nb[WM8804_NUM_SUPPLIES]; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | static int txsrc_get(struct snd_kcontrol *kcontrol, |
| 69 | struct snd_ctl_elem_value *ucontrol); |
| 70 | |
| 71 | static int txsrc_put(struct snd_kcontrol *kcontrol, |
| 72 | struct snd_ctl_elem_value *ucontrol); |
| 73 | |
| 74 | /* |
| 75 | * We can't use the same notifier block for more than one supply and |
| 76 | * there's no way I can see to get from a callback to the caller |
| 77 | * except container_of(). |
| 78 | */ |
| 79 | #define WM8804_REGULATOR_EVENT(n) \ |
| 80 | static int wm8804_regulator_event_##n(struct notifier_block *nb, \ |
| 81 | unsigned long event, void *data) \ |
| 82 | { \ |
| 83 | struct wm8804_priv *wm8804 = container_of(nb, struct wm8804_priv, \ |
| 84 | disable_nb[n]); \ |
| 85 | if (event & REGULATOR_EVENT_DISABLE) { \ |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 86 | regcache_mark_dirty(wm8804->regmap); \ |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 87 | } \ |
| 88 | return 0; \ |
| 89 | } |
| 90 | |
| 91 | WM8804_REGULATOR_EVENT(0) |
| 92 | WM8804_REGULATOR_EVENT(1) |
| 93 | |
| 94 | static const char *txsrc_text[] = { "S/PDIF RX", "AIF" }; |
| 95 | static const SOC_ENUM_SINGLE_EXT_DECL(txsrc, txsrc_text); |
| 96 | |
| 97 | static const struct snd_kcontrol_new wm8804_snd_controls[] = { |
| 98 | SOC_ENUM_EXT("Input Source", txsrc, txsrc_get, txsrc_put), |
| 99 | SOC_SINGLE("TX Playback Switch", WM8804_PWRDN, 2, 1, 1), |
| 100 | SOC_SINGLE("AIF Playback Switch", WM8804_PWRDN, 4, 1, 1) |
| 101 | }; |
| 102 | |
| 103 | static int txsrc_get(struct snd_kcontrol *kcontrol, |
| 104 | struct snd_ctl_elem_value *ucontrol) |
| 105 | { |
| 106 | struct snd_soc_codec *codec; |
| 107 | unsigned int src; |
| 108 | |
| 109 | codec = snd_kcontrol_chip(kcontrol); |
| 110 | src = snd_soc_read(codec, WM8804_SPDTX4); |
| 111 | if (src & 0x40) |
| 112 | ucontrol->value.integer.value[0] = 1; |
| 113 | else |
| 114 | ucontrol->value.integer.value[0] = 0; |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | static int txsrc_put(struct snd_kcontrol *kcontrol, |
| 120 | struct snd_ctl_elem_value *ucontrol) |
| 121 | { |
| 122 | struct snd_soc_codec *codec; |
| 123 | unsigned int src, txpwr; |
| 124 | |
| 125 | codec = snd_kcontrol_chip(kcontrol); |
| 126 | |
| 127 | if (ucontrol->value.integer.value[0] != 0 |
| 128 | && ucontrol->value.integer.value[0] != 1) |
| 129 | return -EINVAL; |
| 130 | |
| 131 | src = snd_soc_read(codec, WM8804_SPDTX4); |
| 132 | switch ((src & 0x40) >> 6) { |
| 133 | case 0: |
| 134 | if (!ucontrol->value.integer.value[0]) |
| 135 | return 0; |
| 136 | break; |
| 137 | case 1: |
| 138 | if (ucontrol->value.integer.value[1]) |
| 139 | return 0; |
| 140 | break; |
| 141 | } |
| 142 | |
| 143 | /* save the current power state of the transmitter */ |
| 144 | txpwr = snd_soc_read(codec, WM8804_PWRDN) & 0x4; |
| 145 | /* power down the transmitter */ |
| 146 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x4); |
| 147 | /* set the tx source */ |
| 148 | snd_soc_update_bits(codec, WM8804_SPDTX4, 0x40, |
| 149 | ucontrol->value.integer.value[0] << 6); |
| 150 | |
| 151 | if (ucontrol->value.integer.value[0]) { |
| 152 | /* power down the receiver */ |
| 153 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0x2); |
| 154 | /* power up the AIF */ |
| 155 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x10, 0); |
| 156 | } else { |
| 157 | /* don't power down the AIF -- may be used as an output */ |
| 158 | /* power up the receiver */ |
| 159 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0); |
| 160 | } |
| 161 | |
| 162 | /* restore the transmitter's configuration */ |
| 163 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, txpwr); |
| 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 168 | static bool wm8804_volatile(struct device *dev, unsigned int reg) |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 169 | { |
| 170 | switch (reg) { |
| 171 | case WM8804_RST_DEVID1: |
| 172 | case WM8804_DEVID2: |
| 173 | case WM8804_DEVREV: |
| 174 | case WM8804_INTSTAT: |
| 175 | case WM8804_SPDSTAT: |
| 176 | case WM8804_RXCHAN1: |
| 177 | case WM8804_RXCHAN2: |
| 178 | case WM8804_RXCHAN3: |
| 179 | case WM8804_RXCHAN4: |
| 180 | case WM8804_RXCHAN5: |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 181 | return true; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 182 | default: |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 183 | return false; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 184 | } |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | static int wm8804_reset(struct snd_soc_codec *codec) |
| 188 | { |
| 189 | return snd_soc_write(codec, WM8804_RST_DEVID1, 0x0); |
| 190 | } |
| 191 | |
| 192 | static int wm8804_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 193 | { |
| 194 | struct snd_soc_codec *codec; |
| 195 | u16 format, master, bcp, lrp; |
| 196 | |
| 197 | codec = dai->codec; |
| 198 | |
| 199 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 200 | case SND_SOC_DAIFMT_I2S: |
| 201 | format = 0x2; |
| 202 | break; |
| 203 | case SND_SOC_DAIFMT_RIGHT_J: |
| 204 | format = 0x0; |
| 205 | break; |
| 206 | case SND_SOC_DAIFMT_LEFT_J: |
| 207 | format = 0x1; |
| 208 | break; |
| 209 | case SND_SOC_DAIFMT_DSP_A: |
| 210 | case SND_SOC_DAIFMT_DSP_B: |
| 211 | format = 0x3; |
| 212 | break; |
| 213 | default: |
| 214 | dev_err(dai->dev, "Unknown dai format\n"); |
| 215 | return -EINVAL; |
| 216 | } |
| 217 | |
| 218 | /* set data format */ |
| 219 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x3, format); |
| 220 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x3, format); |
| 221 | |
| 222 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 223 | case SND_SOC_DAIFMT_CBM_CFM: |
| 224 | master = 1; |
| 225 | break; |
| 226 | case SND_SOC_DAIFMT_CBS_CFS: |
| 227 | master = 0; |
| 228 | break; |
| 229 | default: |
| 230 | dev_err(dai->dev, "Unknown master/slave configuration\n"); |
| 231 | return -EINVAL; |
| 232 | } |
| 233 | |
| 234 | /* set master/slave mode */ |
| 235 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x40, master << 6); |
| 236 | |
| 237 | bcp = lrp = 0; |
| 238 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 239 | case SND_SOC_DAIFMT_NB_NF: |
| 240 | break; |
| 241 | case SND_SOC_DAIFMT_IB_IF: |
| 242 | bcp = lrp = 1; |
| 243 | break; |
| 244 | case SND_SOC_DAIFMT_IB_NF: |
| 245 | bcp = 1; |
| 246 | break; |
| 247 | case SND_SOC_DAIFMT_NB_IF: |
| 248 | lrp = 1; |
| 249 | break; |
| 250 | default: |
| 251 | dev_err(dai->dev, "Unknown polarity configuration\n"); |
| 252 | return -EINVAL; |
| 253 | } |
| 254 | |
| 255 | /* set frame inversion */ |
| 256 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x10 | 0x20, |
| 257 | (bcp << 4) | (lrp << 5)); |
| 258 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x10 | 0x20, |
| 259 | (bcp << 4) | (lrp << 5)); |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static int wm8804_hw_params(struct snd_pcm_substream *substream, |
| 264 | struct snd_pcm_hw_params *params, |
| 265 | struct snd_soc_dai *dai) |
| 266 | { |
| 267 | struct snd_soc_codec *codec; |
| 268 | u16 blen; |
| 269 | |
| 270 | codec = dai->codec; |
| 271 | |
| 272 | switch (params_format(params)) { |
| 273 | case SNDRV_PCM_FORMAT_S16_LE: |
| 274 | blen = 0x0; |
| 275 | break; |
| 276 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 277 | blen = 0x1; |
| 278 | break; |
| 279 | case SNDRV_PCM_FORMAT_S24_LE: |
| 280 | blen = 0x2; |
| 281 | break; |
| 282 | default: |
| 283 | dev_err(dai->dev, "Unsupported word length: %u\n", |
| 284 | params_format(params)); |
| 285 | return -EINVAL; |
| 286 | } |
| 287 | |
| 288 | /* set word length */ |
| 289 | snd_soc_update_bits(codec, WM8804_AIFTX, 0xc, blen << 2); |
| 290 | snd_soc_update_bits(codec, WM8804_AIFRX, 0xc, blen << 2); |
| 291 | |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | struct pll_div { |
| 296 | u32 prescale:1; |
| 297 | u32 mclkdiv:1; |
| 298 | u32 freqmode:2; |
| 299 | u32 n:4; |
| 300 | u32 k:22; |
| 301 | }; |
| 302 | |
| 303 | /* PLL rate to output rate divisions */ |
| 304 | static struct { |
| 305 | unsigned int div; |
| 306 | unsigned int freqmode; |
| 307 | unsigned int mclkdiv; |
| 308 | } post_table[] = { |
| 309 | { 2, 0, 0 }, |
| 310 | { 4, 0, 1 }, |
| 311 | { 4, 1, 0 }, |
| 312 | { 8, 1, 1 }, |
| 313 | { 8, 2, 0 }, |
| 314 | { 16, 2, 1 }, |
| 315 | { 12, 3, 0 }, |
| 316 | { 24, 3, 1 } |
| 317 | }; |
| 318 | |
| 319 | #define FIXED_PLL_SIZE ((1ULL << 22) * 10) |
| 320 | static int pll_factors(struct pll_div *pll_div, unsigned int target, |
| 321 | unsigned int source) |
| 322 | { |
| 323 | u64 Kpart; |
| 324 | unsigned long int K, Ndiv, Nmod, tmp; |
| 325 | int i; |
| 326 | |
| 327 | /* |
| 328 | * Scale the output frequency up; the PLL should run in the |
| 329 | * region of 90-100MHz. |
| 330 | */ |
| 331 | for (i = 0; i < ARRAY_SIZE(post_table); i++) { |
| 332 | tmp = target * post_table[i].div; |
| 333 | if (tmp >= 90000000 && tmp <= 100000000) { |
| 334 | pll_div->freqmode = post_table[i].freqmode; |
| 335 | pll_div->mclkdiv = post_table[i].mclkdiv; |
| 336 | target *= post_table[i].div; |
| 337 | break; |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | if (i == ARRAY_SIZE(post_table)) { |
| 342 | pr_err("%s: Unable to scale output frequency: %uHz\n", |
| 343 | __func__, target); |
| 344 | return -EINVAL; |
| 345 | } |
| 346 | |
| 347 | pll_div->prescale = 0; |
| 348 | Ndiv = target / source; |
| 349 | if (Ndiv < 5) { |
| 350 | source >>= 1; |
| 351 | pll_div->prescale = 1; |
| 352 | Ndiv = target / source; |
| 353 | } |
| 354 | |
| 355 | if (Ndiv < 5 || Ndiv > 13) { |
| 356 | pr_err("%s: WM8804 N value is not within the recommended range: %lu\n", |
| 357 | __func__, Ndiv); |
| 358 | return -EINVAL; |
| 359 | } |
| 360 | pll_div->n = Ndiv; |
| 361 | |
| 362 | Nmod = target % source; |
| 363 | Kpart = FIXED_PLL_SIZE * (u64)Nmod; |
| 364 | |
| 365 | do_div(Kpart, source); |
| 366 | |
| 367 | K = Kpart & 0xffffffff; |
| 368 | if ((K % 10) >= 5) |
| 369 | K += 5; |
| 370 | K /= 10; |
| 371 | pll_div->k = K; |
| 372 | |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | static int wm8804_set_pll(struct snd_soc_dai *dai, int pll_id, |
| 377 | int source, unsigned int freq_in, |
| 378 | unsigned int freq_out) |
| 379 | { |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 380 | struct snd_soc_codec *codec; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 381 | |
| 382 | codec = dai->codec; |
Dimitris Papastamos | 86ce6c9 | 2010-10-04 09:31:42 +0100 | [diff] [blame] | 383 | if (!freq_in || !freq_out) { |
| 384 | /* disable the PLL */ |
Dimitris Papastamos | 6c20c80 | 2010-10-04 09:37:48 +0100 | [diff] [blame] | 385 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
Dimitris Papastamos | 86ce6c9 | 2010-10-04 09:31:42 +0100 | [diff] [blame] | 386 | return 0; |
| 387 | } else { |
| 388 | int ret; |
| 389 | struct pll_div pll_div; |
| 390 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 391 | ret = pll_factors(&pll_div, freq_out, freq_in); |
| 392 | if (ret) |
| 393 | return ret; |
Dimitris Papastamos | 86ce6c9 | 2010-10-04 09:31:42 +0100 | [diff] [blame] | 394 | |
| 395 | /* power down the PLL before reprogramming it */ |
Dimitris Papastamos | 6c20c80 | 2010-10-04 09:37:48 +0100 | [diff] [blame] | 396 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
Dimitris Papastamos | 86ce6c9 | 2010-10-04 09:31:42 +0100 | [diff] [blame] | 397 | |
| 398 | if (!freq_in || !freq_out) |
| 399 | return 0; |
| 400 | |
| 401 | /* set PLLN and PRESCALE */ |
| 402 | snd_soc_update_bits(codec, WM8804_PLL4, 0xf | 0x10, |
| 403 | pll_div.n | (pll_div.prescale << 4)); |
| 404 | /* set mclkdiv and freqmode */ |
| 405 | snd_soc_update_bits(codec, WM8804_PLL5, 0x3 | 0x8, |
| 406 | pll_div.freqmode | (pll_div.mclkdiv << 3)); |
| 407 | /* set PLLK */ |
| 408 | snd_soc_write(codec, WM8804_PLL1, pll_div.k & 0xff); |
| 409 | snd_soc_write(codec, WM8804_PLL2, (pll_div.k >> 8) & 0xff); |
| 410 | snd_soc_write(codec, WM8804_PLL3, pll_div.k >> 16); |
| 411 | |
| 412 | /* power up the PLL */ |
Dimitris Papastamos | 6c20c80 | 2010-10-04 09:37:48 +0100 | [diff] [blame] | 413 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 414 | } |
| 415 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | static int wm8804_set_sysclk(struct snd_soc_dai *dai, |
| 420 | int clk_id, unsigned int freq, int dir) |
| 421 | { |
| 422 | struct snd_soc_codec *codec; |
| 423 | |
| 424 | codec = dai->codec; |
| 425 | |
| 426 | switch (clk_id) { |
| 427 | case WM8804_TX_CLKSRC_MCLK: |
| 428 | if ((freq >= 10000000 && freq <= 14400000) |
| 429 | || (freq >= 16280000 && freq <= 27000000)) |
| 430 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0x80); |
| 431 | else { |
| 432 | dev_err(dai->dev, "OSCCLOCK is not within the " |
| 433 | "recommended range: %uHz\n", freq); |
| 434 | return -EINVAL; |
| 435 | } |
| 436 | break; |
| 437 | case WM8804_TX_CLKSRC_PLL: |
| 438 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0); |
| 439 | break; |
| 440 | case WM8804_CLKOUT_SRC_CLK1: |
| 441 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0); |
| 442 | break; |
| 443 | case WM8804_CLKOUT_SRC_OSCCLK: |
| 444 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0x8); |
| 445 | break; |
| 446 | default: |
| 447 | dev_err(dai->dev, "Unknown clock source: %d\n", clk_id); |
| 448 | return -EINVAL; |
| 449 | } |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | static int wm8804_set_clkdiv(struct snd_soc_dai *dai, |
| 455 | int div_id, int div) |
| 456 | { |
| 457 | struct snd_soc_codec *codec; |
| 458 | |
| 459 | codec = dai->codec; |
| 460 | switch (div_id) { |
| 461 | case WM8804_CLKOUT_DIV: |
| 462 | snd_soc_update_bits(codec, WM8804_PLL5, 0x30, |
| 463 | (div & 0x3) << 4); |
| 464 | break; |
| 465 | default: |
| 466 | dev_err(dai->dev, "Unknown clock divider: %d\n", div_id); |
| 467 | return -EINVAL; |
| 468 | } |
| 469 | return 0; |
| 470 | } |
| 471 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 472 | static int wm8804_set_bias_level(struct snd_soc_codec *codec, |
| 473 | enum snd_soc_bias_level level) |
| 474 | { |
| 475 | int ret; |
| 476 | struct wm8804_priv *wm8804; |
| 477 | |
| 478 | wm8804 = snd_soc_codec_get_drvdata(codec); |
| 479 | switch (level) { |
| 480 | case SND_SOC_BIAS_ON: |
| 481 | break; |
| 482 | case SND_SOC_BIAS_PREPARE: |
| 483 | /* power up the OSC and the PLL */ |
| 484 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0); |
| 485 | break; |
| 486 | case SND_SOC_BIAS_STANDBY: |
Liam Girdwood | ce6120c | 2010-11-05 15:53:46 +0200 | [diff] [blame] | 487 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 488 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), |
| 489 | wm8804->supplies); |
| 490 | if (ret) { |
| 491 | dev_err(codec->dev, |
| 492 | "Failed to enable supplies: %d\n", |
| 493 | ret); |
| 494 | return ret; |
| 495 | } |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 496 | regcache_sync(wm8804->regmap); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 497 | } |
| 498 | /* power down the OSC and the PLL */ |
| 499 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); |
| 500 | break; |
| 501 | case SND_SOC_BIAS_OFF: |
| 502 | /* power down the OSC and the PLL */ |
| 503 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); |
| 504 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), |
| 505 | wm8804->supplies); |
| 506 | break; |
| 507 | } |
| 508 | |
Liam Girdwood | ce6120c | 2010-11-05 15:53:46 +0200 | [diff] [blame] | 509 | codec->dapm.bias_level = level; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | #ifdef CONFIG_PM |
Lars-Peter Clausen | 84b315e | 2011-12-02 10:18:28 +0100 | [diff] [blame] | 514 | static int wm8804_suspend(struct snd_soc_codec *codec) |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 515 | { |
| 516 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | static int wm8804_resume(struct snd_soc_codec *codec) |
| 521 | { |
| 522 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 523 | return 0; |
| 524 | } |
| 525 | #else |
| 526 | #define wm8804_suspend NULL |
| 527 | #define wm8804_resume NULL |
| 528 | #endif |
| 529 | |
| 530 | static int wm8804_remove(struct snd_soc_codec *codec) |
| 531 | { |
| 532 | struct wm8804_priv *wm8804; |
| 533 | int i; |
| 534 | |
| 535 | wm8804 = snd_soc_codec_get_drvdata(codec); |
| 536 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 537 | |
| 538 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); ++i) |
| 539 | regulator_unregister_notifier(wm8804->supplies[i].consumer, |
| 540 | &wm8804->disable_nb[i]); |
| 541 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); |
| 542 | return 0; |
| 543 | } |
| 544 | |
| 545 | static int wm8804_probe(struct snd_soc_codec *codec) |
| 546 | { |
| 547 | struct wm8804_priv *wm8804; |
| 548 | int i, id1, id2, ret; |
| 549 | |
| 550 | wm8804 = snd_soc_codec_get_drvdata(codec); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 551 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 552 | codec->control_data = wm8804->regmap; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 553 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 554 | ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 555 | if (ret < 0) { |
| 556 | dev_err(codec->dev, "Failed to set cache i/o: %d\n", ret); |
| 557 | return ret; |
| 558 | } |
| 559 | |
| 560 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) |
| 561 | wm8804->supplies[i].supply = wm8804_supply_names[i]; |
| 562 | |
| 563 | ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8804->supplies), |
| 564 | wm8804->supplies); |
| 565 | if (ret) { |
| 566 | dev_err(codec->dev, "Failed to request supplies: %d\n", ret); |
| 567 | return ret; |
| 568 | } |
| 569 | |
| 570 | wm8804->disable_nb[0].notifier_call = wm8804_regulator_event_0; |
| 571 | wm8804->disable_nb[1].notifier_call = wm8804_regulator_event_1; |
| 572 | |
| 573 | /* This should really be moved into the regulator core */ |
| 574 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) { |
| 575 | ret = regulator_register_notifier(wm8804->supplies[i].consumer, |
| 576 | &wm8804->disable_nb[i]); |
| 577 | if (ret != 0) { |
| 578 | dev_err(codec->dev, |
| 579 | "Failed to register regulator notifier: %d\n", |
| 580 | ret); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), |
| 585 | wm8804->supplies); |
| 586 | if (ret) { |
| 587 | dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); |
| 588 | goto err_reg_get; |
| 589 | } |
| 590 | |
| 591 | id1 = snd_soc_read(codec, WM8804_RST_DEVID1); |
| 592 | if (id1 < 0) { |
| 593 | dev_err(codec->dev, "Failed to read device ID: %d\n", id1); |
| 594 | ret = id1; |
| 595 | goto err_reg_enable; |
| 596 | } |
| 597 | |
| 598 | id2 = snd_soc_read(codec, WM8804_DEVID2); |
| 599 | if (id2 < 0) { |
| 600 | dev_err(codec->dev, "Failed to read device ID: %d\n", id2); |
| 601 | ret = id2; |
| 602 | goto err_reg_enable; |
| 603 | } |
| 604 | |
| 605 | id2 = (id2 << 8) | id1; |
| 606 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 607 | if (id2 != 0x8805) { |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 608 | dev_err(codec->dev, "Invalid device ID: %#x\n", id2); |
| 609 | ret = -EINVAL; |
| 610 | goto err_reg_enable; |
| 611 | } |
| 612 | |
Dimitris Papastamos | e595b32 | 2010-10-04 16:28:59 +0100 | [diff] [blame] | 613 | ret = snd_soc_read(codec, WM8804_DEVREV); |
| 614 | if (ret < 0) { |
| 615 | dev_err(codec->dev, "Failed to read device revision: %d\n", |
| 616 | ret); |
| 617 | goto err_reg_enable; |
| 618 | } |
| 619 | dev_info(codec->dev, "revision %c\n", ret + 'A'); |
| 620 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 621 | ret = wm8804_reset(codec); |
| 622 | if (ret < 0) { |
| 623 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
| 624 | goto err_reg_enable; |
| 625 | } |
| 626 | |
| 627 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 628 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 629 | return 0; |
| 630 | |
| 631 | err_reg_enable: |
| 632 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); |
| 633 | err_reg_get: |
| 634 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); |
| 635 | return ret; |
| 636 | } |
| 637 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 638 | static const struct snd_soc_dai_ops wm8804_dai_ops = { |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 639 | .hw_params = wm8804_hw_params, |
| 640 | .set_fmt = wm8804_set_fmt, |
| 641 | .set_sysclk = wm8804_set_sysclk, |
| 642 | .set_clkdiv = wm8804_set_clkdiv, |
| 643 | .set_pll = wm8804_set_pll |
| 644 | }; |
| 645 | |
| 646 | #define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| 647 | SNDRV_PCM_FMTBIT_S24_LE) |
| 648 | |
Mark Brown | 3115ae1 | 2011-06-08 18:07:49 +0100 | [diff] [blame] | 649 | #define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ |
| 650 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \ |
| 651 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \ |
| 652 | SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000) |
| 653 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 654 | static struct snd_soc_dai_driver wm8804_dai = { |
Dimitris Papastamos | cb13c6b | 2010-10-01 09:12:14 +0100 | [diff] [blame] | 655 | .name = "wm8804-spdif", |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 656 | .playback = { |
| 657 | .stream_name = "Playback", |
| 658 | .channels_min = 2, |
| 659 | .channels_max = 2, |
Mark Brown | 3115ae1 | 2011-06-08 18:07:49 +0100 | [diff] [blame] | 660 | .rates = WM8804_RATES, |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 661 | .formats = WM8804_FORMATS, |
| 662 | }, |
| 663 | .capture = { |
| 664 | .stream_name = "Capture", |
| 665 | .channels_min = 2, |
| 666 | .channels_max = 2, |
Mark Brown | 3115ae1 | 2011-06-08 18:07:49 +0100 | [diff] [blame] | 667 | .rates = WM8804_RATES, |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 668 | .formats = WM8804_FORMATS, |
| 669 | }, |
| 670 | .ops = &wm8804_dai_ops, |
| 671 | .symmetric_rates = 1 |
| 672 | }; |
| 673 | |
| 674 | static struct snd_soc_codec_driver soc_codec_dev_wm8804 = { |
| 675 | .probe = wm8804_probe, |
| 676 | .remove = wm8804_remove, |
| 677 | .suspend = wm8804_suspend, |
| 678 | .resume = wm8804_resume, |
| 679 | .set_bias_level = wm8804_set_bias_level, |
Axel Lin | eb3032f | 2012-01-27 18:02:09 +0800 | [diff] [blame] | 680 | .idle_bias_off = true, |
Mark Brown | 5a37452 | 2011-12-08 16:52:19 +0800 | [diff] [blame] | 681 | |
| 682 | .controls = wm8804_snd_controls, |
| 683 | .num_controls = ARRAY_SIZE(wm8804_snd_controls), |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 684 | }; |
| 685 | |
Mark Brown | d2dd054 | 2011-08-29 14:23:05 +0100 | [diff] [blame] | 686 | static const struct of_device_id wm8804_of_match[] = { |
| 687 | { .compatible = "wlf,wm8804", }, |
| 688 | { } |
| 689 | }; |
| 690 | MODULE_DEVICE_TABLE(of, wm8804_of_match); |
| 691 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 692 | static struct regmap_config wm8804_regmap_config = { |
| 693 | .reg_bits = 8, |
| 694 | .val_bits = 8, |
| 695 | |
| 696 | .max_register = WM8804_MAX_REGISTER, |
| 697 | .volatile_reg = wm8804_volatile, |
| 698 | |
| 699 | .cache_type = REGCACHE_RBTREE, |
| 700 | .reg_defaults = wm8804_reg_defaults, |
| 701 | .num_reg_defaults = ARRAY_SIZE(wm8804_reg_defaults), |
| 702 | }; |
| 703 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 704 | #if defined(CONFIG_SPI_MASTER) |
| 705 | static int __devinit wm8804_spi_probe(struct spi_device *spi) |
| 706 | { |
| 707 | struct wm8804_priv *wm8804; |
| 708 | int ret; |
| 709 | |
Mark Brown | f649f1a | 2011-12-29 19:19:18 +0000 | [diff] [blame] | 710 | wm8804 = devm_kzalloc(&spi->dev, sizeof *wm8804, GFP_KERNEL); |
Dan Carpenter | fe3e2e7 | 2010-10-09 21:31:31 +0200 | [diff] [blame] | 711 | if (!wm8804) |
| 712 | return -ENOMEM; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 713 | |
Tushar Behera | 9bb6e95 | 2012-11-22 09:38:39 +0530 | [diff] [blame] | 714 | wm8804->regmap = devm_regmap_init_spi(spi, &wm8804_regmap_config); |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 715 | if (IS_ERR(wm8804->regmap)) { |
| 716 | ret = PTR_ERR(wm8804->regmap); |
| 717 | return ret; |
| 718 | } |
| 719 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 720 | spi_set_drvdata(spi, wm8804); |
| 721 | |
| 722 | ret = snd_soc_register_codec(&spi->dev, |
| 723 | &soc_codec_dev_wm8804, &wm8804_dai, 1); |
Mark Brown | f649f1a | 2011-12-29 19:19:18 +0000 | [diff] [blame] | 724 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 725 | return ret; |
| 726 | } |
| 727 | |
| 728 | static int __devexit wm8804_spi_remove(struct spi_device *spi) |
| 729 | { |
| 730 | snd_soc_unregister_codec(&spi->dev); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 731 | return 0; |
| 732 | } |
| 733 | |
| 734 | static struct spi_driver wm8804_spi_driver = { |
| 735 | .driver = { |
| 736 | .name = "wm8804", |
| 737 | .owner = THIS_MODULE, |
Mark Brown | d2dd054 | 2011-08-29 14:23:05 +0100 | [diff] [blame] | 738 | .of_match_table = wm8804_of_match, |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 739 | }, |
| 740 | .probe = wm8804_spi_probe, |
| 741 | .remove = __devexit_p(wm8804_spi_remove) |
| 742 | }; |
| 743 | #endif |
| 744 | |
| 745 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 746 | static __devinit int wm8804_i2c_probe(struct i2c_client *i2c, |
| 747 | const struct i2c_device_id *id) |
| 748 | { |
| 749 | struct wm8804_priv *wm8804; |
| 750 | int ret; |
| 751 | |
Mark Brown | f649f1a | 2011-12-29 19:19:18 +0000 | [diff] [blame] | 752 | wm8804 = devm_kzalloc(&i2c->dev, sizeof *wm8804, GFP_KERNEL); |
Dan Carpenter | fe3e2e7 | 2010-10-09 21:31:31 +0200 | [diff] [blame] | 753 | if (!wm8804) |
| 754 | return -ENOMEM; |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 755 | |
Tushar Behera | 9bb6e95 | 2012-11-22 09:38:39 +0530 | [diff] [blame] | 756 | wm8804->regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config); |
Axel Lin | f320515 | 2012-03-06 15:06:53 +0800 | [diff] [blame] | 757 | if (IS_ERR(wm8804->regmap)) { |
| 758 | ret = PTR_ERR(wm8804->regmap); |
| 759 | return ret; |
| 760 | } |
| 761 | |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 762 | i2c_set_clientdata(i2c, wm8804); |
| 763 | |
| 764 | ret = snd_soc_register_codec(&i2c->dev, |
| 765 | &soc_codec_dev_wm8804, &wm8804_dai, 1); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 766 | return ret; |
| 767 | } |
| 768 | |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 769 | static __devexit int wm8804_i2c_remove(struct i2c_client *i2c) |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 770 | { |
Mark Brown | 891271c | 2011-12-29 19:58:06 +0000 | [diff] [blame] | 771 | snd_soc_unregister_codec(&i2c->dev); |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | static const struct i2c_device_id wm8804_i2c_id[] = { |
| 776 | { "wm8804", 0 }, |
| 777 | { } |
| 778 | }; |
| 779 | MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id); |
| 780 | |
| 781 | static struct i2c_driver wm8804_i2c_driver = { |
| 782 | .driver = { |
| 783 | .name = "wm8804", |
| 784 | .owner = THIS_MODULE, |
Mark Brown | d2dd054 | 2011-08-29 14:23:05 +0100 | [diff] [blame] | 785 | .of_match_table = wm8804_of_match, |
Dimitris Papastamos | 33cf45c | 2010-09-29 11:14:56 +0100 | [diff] [blame] | 786 | }, |
| 787 | .probe = wm8804_i2c_probe, |
| 788 | .remove = __devexit_p(wm8804_i2c_remove), |
| 789 | .id_table = wm8804_i2c_id |
| 790 | }; |
| 791 | #endif |
| 792 | |
| 793 | static int __init wm8804_modinit(void) |
| 794 | { |
| 795 | int ret = 0; |
| 796 | |
| 797 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 798 | ret = i2c_add_driver(&wm8804_i2c_driver); |
| 799 | if (ret) { |
| 800 | printk(KERN_ERR "Failed to register wm8804 I2C driver: %d\n", |
| 801 | ret); |
| 802 | } |
| 803 | #endif |
| 804 | #if defined(CONFIG_SPI_MASTER) |
| 805 | ret = spi_register_driver(&wm8804_spi_driver); |
| 806 | if (ret != 0) { |
| 807 | printk(KERN_ERR "Failed to register wm8804 SPI driver: %d\n", |
| 808 | ret); |
| 809 | } |
| 810 | #endif |
| 811 | return ret; |
| 812 | } |
| 813 | module_init(wm8804_modinit); |
| 814 | |
| 815 | static void __exit wm8804_exit(void) |
| 816 | { |
| 817 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 818 | i2c_del_driver(&wm8804_i2c_driver); |
| 819 | #endif |
| 820 | #if defined(CONFIG_SPI_MASTER) |
| 821 | spi_unregister_driver(&wm8804_spi_driver); |
| 822 | #endif |
| 823 | } |
| 824 | module_exit(wm8804_exit); |
| 825 | |
| 826 | MODULE_DESCRIPTION("ASoC WM8804 driver"); |
| 827 | MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); |
| 828 | MODULE_LICENSE("GPL"); |