| 1 | /* |
| 2 | * ASoC simple sound card support |
| 3 | * |
| 4 | * Copyright (C) 2012 Renesas Solutions Corp. |
| 5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/clk.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/gpio.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/of.h> |
| 16 | #include <linux/of_gpio.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/string.h> |
| 19 | #include <sound/jack.h> |
| 20 | #include <sound/simple_card.h> |
| 21 | #include <sound/soc-dai.h> |
| 22 | #include <sound/soc.h> |
| 23 | |
| 24 | struct simple_card_data { |
| 25 | struct snd_soc_card snd_card; |
| 26 | struct simple_dai_props { |
| 27 | struct asoc_simple_dai cpu_dai; |
| 28 | struct asoc_simple_dai codec_dai; |
| 29 | unsigned int mclk_fs; |
| 30 | } *dai_props; |
| 31 | unsigned int mclk_fs; |
| 32 | int gpio_hp_det; |
| 33 | int gpio_hp_det_invert; |
| 34 | int gpio_mic_det; |
| 35 | int gpio_mic_det_invert; |
| 36 | struct snd_soc_dai_link dai_link[]; /* dynamically allocated */ |
| 37 | }; |
| 38 | |
| 39 | #define simple_priv_to_dev(priv) ((priv)->snd_card.dev) |
| 40 | #define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i) |
| 41 | #define simple_priv_to_props(priv, i) ((priv)->dai_props + i) |
| 42 | |
| 43 | static int asoc_simple_card_startup(struct snd_pcm_substream *substream) |
| 44 | { |
| 45 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 46 | struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); |
| 47 | struct simple_dai_props *dai_props = |
| 48 | &priv->dai_props[rtd->num]; |
| 49 | int ret; |
| 50 | |
| 51 | ret = clk_prepare_enable(dai_props->cpu_dai.clk); |
| 52 | if (ret) |
| 53 | return ret; |
| 54 | |
| 55 | ret = clk_prepare_enable(dai_props->codec_dai.clk); |
| 56 | if (ret) |
| 57 | clk_disable_unprepare(dai_props->cpu_dai.clk); |
| 58 | |
| 59 | return ret; |
| 60 | } |
| 61 | |
| 62 | static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream) |
| 63 | { |
| 64 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 65 | struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); |
| 66 | struct simple_dai_props *dai_props = |
| 67 | &priv->dai_props[rtd->num]; |
| 68 | |
| 69 | clk_disable_unprepare(dai_props->cpu_dai.clk); |
| 70 | |
| 71 | clk_disable_unprepare(dai_props->codec_dai.clk); |
| 72 | } |
| 73 | |
| 74 | static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream, |
| 75 | struct snd_pcm_hw_params *params) |
| 76 | { |
| 77 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 78 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 79 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 80 | struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); |
| 81 | struct simple_dai_props *dai_props = &priv->dai_props[rtd->num]; |
| 82 | unsigned int mclk, mclk_fs = 0; |
| 83 | int ret = 0; |
| 84 | |
| 85 | if (priv->mclk_fs) |
| 86 | mclk_fs = priv->mclk_fs; |
| 87 | else if (dai_props->mclk_fs) |
| 88 | mclk_fs = dai_props->mclk_fs; |
| 89 | |
| 90 | if (mclk_fs) { |
| 91 | mclk = params_rate(params) * mclk_fs; |
| 92 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, |
| 93 | SND_SOC_CLOCK_IN); |
| 94 | if (ret && ret != -ENOTSUPP) |
| 95 | goto err; |
| 96 | |
| 97 | ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, |
| 98 | SND_SOC_CLOCK_OUT); |
| 99 | if (ret && ret != -ENOTSUPP) |
| 100 | goto err; |
| 101 | } |
| 102 | return 0; |
| 103 | err: |
| 104 | return ret; |
| 105 | } |
| 106 | |
| 107 | static struct snd_soc_ops asoc_simple_card_ops = { |
| 108 | .startup = asoc_simple_card_startup, |
| 109 | .shutdown = asoc_simple_card_shutdown, |
| 110 | .hw_params = asoc_simple_card_hw_params, |
| 111 | }; |
| 112 | |
| 113 | static struct snd_soc_jack simple_card_hp_jack; |
| 114 | static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = { |
| 115 | { |
| 116 | .pin = "Headphones", |
| 117 | .mask = SND_JACK_HEADPHONE, |
| 118 | }, |
| 119 | }; |
| 120 | static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = { |
| 121 | .name = "Headphone detection", |
| 122 | .report = SND_JACK_HEADPHONE, |
| 123 | .debounce_time = 150, |
| 124 | }; |
| 125 | |
| 126 | static struct snd_soc_jack simple_card_mic_jack; |
| 127 | static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = { |
| 128 | { |
| 129 | .pin = "Mic Jack", |
| 130 | .mask = SND_JACK_MICROPHONE, |
| 131 | }, |
| 132 | }; |
| 133 | static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = { |
| 134 | .name = "Mic detection", |
| 135 | .report = SND_JACK_MICROPHONE, |
| 136 | .debounce_time = 150, |
| 137 | }; |
| 138 | |
| 139 | static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai, |
| 140 | struct asoc_simple_dai *set) |
| 141 | { |
| 142 | int ret; |
| 143 | |
| 144 | if (set->sysclk) { |
| 145 | ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0); |
| 146 | if (ret && ret != -ENOTSUPP) { |
| 147 | dev_err(dai->dev, "simple-card: set_sysclk error\n"); |
| 148 | goto err; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | if (set->slots) { |
| 153 | ret = snd_soc_dai_set_tdm_slot(dai, |
| 154 | set->tx_slot_mask, |
| 155 | set->rx_slot_mask, |
| 156 | set->slots, |
| 157 | set->slot_width); |
| 158 | if (ret && ret != -ENOTSUPP) { |
| 159 | dev_err(dai->dev, "simple-card: set_tdm_slot error\n"); |
| 160 | goto err; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | ret = 0; |
| 165 | |
| 166 | err: |
| 167 | return ret; |
| 168 | } |
| 169 | |
| 170 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
| 171 | { |
| 172 | struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); |
| 173 | struct snd_soc_dai *codec = rtd->codec_dai; |
| 174 | struct snd_soc_dai *cpu = rtd->cpu_dai; |
| 175 | struct simple_dai_props *dai_props; |
| 176 | int ret; |
| 177 | |
| 178 | dai_props = &priv->dai_props[rtd->num]; |
| 179 | ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai); |
| 180 | if (ret < 0) |
| 181 | return ret; |
| 182 | |
| 183 | ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai); |
| 184 | if (ret < 0) |
| 185 | return ret; |
| 186 | |
| 187 | if (gpio_is_valid(priv->gpio_hp_det)) { |
| 188 | snd_soc_card_jack_new(rtd->card, "Headphones", |
| 189 | SND_JACK_HEADPHONE, |
| 190 | &simple_card_hp_jack, |
| 191 | simple_card_hp_jack_pins, |
| 192 | ARRAY_SIZE(simple_card_hp_jack_pins)); |
| 193 | |
| 194 | simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det; |
| 195 | simple_card_hp_jack_gpio.invert = priv->gpio_hp_det_invert; |
| 196 | snd_soc_jack_add_gpios(&simple_card_hp_jack, 1, |
| 197 | &simple_card_hp_jack_gpio); |
| 198 | } |
| 199 | |
| 200 | if (gpio_is_valid(priv->gpio_mic_det)) { |
| 201 | snd_soc_card_jack_new(rtd->card, "Mic Jack", |
| 202 | SND_JACK_MICROPHONE, |
| 203 | &simple_card_mic_jack, |
| 204 | simple_card_mic_jack_pins, |
| 205 | ARRAY_SIZE(simple_card_mic_jack_pins)); |
| 206 | simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det; |
| 207 | simple_card_mic_jack_gpio.invert = priv->gpio_mic_det_invert; |
| 208 | snd_soc_jack_add_gpios(&simple_card_mic_jack, 1, |
| 209 | &simple_card_mic_jack_gpio); |
| 210 | } |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | static int |
| 215 | asoc_simple_card_sub_parse_of(struct device_node *np, |
| 216 | struct asoc_simple_dai *dai, |
| 217 | struct device_node **p_node, |
| 218 | const char **name, |
| 219 | int *args_count) |
| 220 | { |
| 221 | struct of_phandle_args args; |
| 222 | struct clk *clk; |
| 223 | u32 val; |
| 224 | int ret; |
| 225 | |
| 226 | /* |
| 227 | * Get node via "sound-dai = <&phandle port>" |
| 228 | * it will be used as xxx_of_node on soc_bind_dai_link() |
| 229 | */ |
| 230 | ret = of_parse_phandle_with_args(np, "sound-dai", |
| 231 | "#sound-dai-cells", 0, &args); |
| 232 | if (ret) |
| 233 | return ret; |
| 234 | |
| 235 | *p_node = args.np; |
| 236 | |
| 237 | if (args_count) |
| 238 | *args_count = args.args_count; |
| 239 | |
| 240 | /* Get dai->name */ |
| 241 | ret = snd_soc_of_get_dai_name(np, name); |
| 242 | if (ret < 0) |
| 243 | return ret; |
| 244 | |
| 245 | /* Parse TDM slot */ |
| 246 | ret = snd_soc_of_parse_tdm_slot(np, &dai->tx_slot_mask, |
| 247 | &dai->rx_slot_mask, |
| 248 | &dai->slots, &dai->slot_width); |
| 249 | if (ret) |
| 250 | return ret; |
| 251 | |
| 252 | /* |
| 253 | * Parse dai->sysclk come from "clocks = <&xxx>" |
| 254 | * (if system has common clock) |
| 255 | * or "system-clock-frequency = <xxx>" |
| 256 | * or device's module clock. |
| 257 | */ |
| 258 | if (of_property_read_bool(np, "clocks")) { |
| 259 | clk = of_clk_get(np, 0); |
| 260 | if (IS_ERR(clk)) { |
| 261 | ret = PTR_ERR(clk); |
| 262 | return ret; |
| 263 | } |
| 264 | |
| 265 | dai->sysclk = clk_get_rate(clk); |
| 266 | dai->clk = clk; |
| 267 | } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) { |
| 268 | dai->sysclk = val; |
| 269 | } else { |
| 270 | clk = of_clk_get(args.np, 0); |
| 271 | if (!IS_ERR(clk)) |
| 272 | dai->sysclk = clk_get_rate(clk); |
| 273 | } |
| 274 | |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | static int asoc_simple_card_parse_daifmt(struct device_node *node, |
| 279 | struct simple_card_data *priv, |
| 280 | struct device_node *codec, |
| 281 | char *prefix, int idx) |
| 282 | { |
| 283 | struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx); |
| 284 | struct device *dev = simple_priv_to_dev(priv); |
| 285 | struct device_node *bitclkmaster = NULL; |
| 286 | struct device_node *framemaster = NULL; |
| 287 | unsigned int daifmt; |
| 288 | |
| 289 | daifmt = snd_soc_of_parse_daifmt(node, prefix, |
| 290 | &bitclkmaster, &framemaster); |
| 291 | daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; |
| 292 | |
| 293 | if (strlen(prefix) && !bitclkmaster && !framemaster) { |
| 294 | /* |
| 295 | * No dai-link level and master setting was not found from |
| 296 | * sound node level, revert back to legacy DT parsing and |
| 297 | * take the settings from codec node. |
| 298 | */ |
| 299 | dev_dbg(dev, "Revert to legacy daifmt parsing\n"); |
| 300 | |
| 301 | daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) | |
| 302 | (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK); |
| 303 | } else { |
| 304 | if (codec == bitclkmaster) |
| 305 | daifmt |= (codec == framemaster) ? |
| 306 | SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS; |
| 307 | else |
| 308 | daifmt |= (codec == framemaster) ? |
| 309 | SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS; |
| 310 | } |
| 311 | |
| 312 | dai_link->dai_fmt = daifmt; |
| 313 | |
| 314 | of_node_put(bitclkmaster); |
| 315 | of_node_put(framemaster); |
| 316 | |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | static int asoc_simple_card_dai_link_of(struct device_node *node, |
| 321 | struct simple_card_data *priv, |
| 322 | int idx, |
| 323 | bool is_top_level_node) |
| 324 | { |
| 325 | struct device *dev = simple_priv_to_dev(priv); |
| 326 | struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx); |
| 327 | struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx); |
| 328 | struct device_node *cpu = NULL; |
| 329 | struct device_node *plat = NULL; |
| 330 | struct device_node *codec = NULL; |
| 331 | char *name; |
| 332 | char prop[128]; |
| 333 | char *prefix = ""; |
| 334 | int ret, cpu_args; |
| 335 | u32 val; |
| 336 | |
| 337 | /* For single DAI link & old style of DT node */ |
| 338 | if (is_top_level_node) |
| 339 | prefix = "simple-audio-card,"; |
| 340 | |
| 341 | snprintf(prop, sizeof(prop), "%scpu", prefix); |
| 342 | cpu = of_get_child_by_name(node, prop); |
| 343 | |
| 344 | snprintf(prop, sizeof(prop), "%splat", prefix); |
| 345 | plat = of_get_child_by_name(node, prop); |
| 346 | |
| 347 | snprintf(prop, sizeof(prop), "%scodec", prefix); |
| 348 | codec = of_get_child_by_name(node, prop); |
| 349 | |
| 350 | if (!cpu || !codec) { |
| 351 | ret = -EINVAL; |
| 352 | dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); |
| 353 | goto dai_link_of_err; |
| 354 | } |
| 355 | |
| 356 | ret = asoc_simple_card_parse_daifmt(node, priv, |
| 357 | codec, prefix, idx); |
| 358 | if (ret < 0) |
| 359 | goto dai_link_of_err; |
| 360 | |
| 361 | if (!of_property_read_u32(node, "mclk-fs", &val)) |
| 362 | dai_props->mclk_fs = val; |
| 363 | |
| 364 | ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai, |
| 365 | &dai_link->cpu_of_node, |
| 366 | &dai_link->cpu_dai_name, |
| 367 | &cpu_args); |
| 368 | if (ret < 0) |
| 369 | goto dai_link_of_err; |
| 370 | |
| 371 | ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai, |
| 372 | &dai_link->codec_of_node, |
| 373 | &dai_link->codec_dai_name, NULL); |
| 374 | if (ret < 0) |
| 375 | goto dai_link_of_err; |
| 376 | |
| 377 | if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) { |
| 378 | ret = -EINVAL; |
| 379 | goto dai_link_of_err; |
| 380 | } |
| 381 | |
| 382 | if (plat) { |
| 383 | struct of_phandle_args args; |
| 384 | |
| 385 | ret = of_parse_phandle_with_args(plat, "sound-dai", |
| 386 | "#sound-dai-cells", 0, &args); |
| 387 | dai_link->platform_of_node = args.np; |
| 388 | } else { |
| 389 | /* Assumes platform == cpu */ |
| 390 | dai_link->platform_of_node = dai_link->cpu_of_node; |
| 391 | } |
| 392 | |
| 393 | /* DAI link name is created from CPU/CODEC dai name */ |
| 394 | name = devm_kzalloc(dev, |
| 395 | strlen(dai_link->cpu_dai_name) + |
| 396 | strlen(dai_link->codec_dai_name) + 2, |
| 397 | GFP_KERNEL); |
| 398 | if (!name) { |
| 399 | ret = -ENOMEM; |
| 400 | goto dai_link_of_err; |
| 401 | } |
| 402 | |
| 403 | sprintf(name, "%s-%s", dai_link->cpu_dai_name, |
| 404 | dai_link->codec_dai_name); |
| 405 | dai_link->name = dai_link->stream_name = name; |
| 406 | dai_link->ops = &asoc_simple_card_ops; |
| 407 | dai_link->init = asoc_simple_card_dai_init; |
| 408 | |
| 409 | dev_dbg(dev, "\tname : %s\n", dai_link->stream_name); |
| 410 | dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt); |
| 411 | dev_dbg(dev, "\tcpu : %s / %d\n", |
| 412 | dai_link->cpu_dai_name, |
| 413 | dai_props->cpu_dai.sysclk); |
| 414 | dev_dbg(dev, "\tcodec : %s / %d\n", |
| 415 | dai_link->codec_dai_name, |
| 416 | dai_props->codec_dai.sysclk); |
| 417 | |
| 418 | /* |
| 419 | * In soc_bind_dai_link() will check cpu name after |
| 420 | * of_node matching if dai_link has cpu_dai_name. |
| 421 | * but, it will never match if name was created by |
| 422 | * fmt_single_name() remove cpu_dai_name if cpu_args |
| 423 | * was 0. See: |
| 424 | * fmt_single_name() |
| 425 | * fmt_multiple_name() |
| 426 | */ |
| 427 | if (!cpu_args) |
| 428 | dai_link->cpu_dai_name = NULL; |
| 429 | |
| 430 | dai_link_of_err: |
| 431 | of_node_put(cpu); |
| 432 | of_node_put(codec); |
| 433 | |
| 434 | return ret; |
| 435 | } |
| 436 | |
| 437 | static int asoc_simple_card_parse_of(struct device_node *node, |
| 438 | struct simple_card_data *priv) |
| 439 | { |
| 440 | struct device *dev = simple_priv_to_dev(priv); |
| 441 | enum of_gpio_flags flags; |
| 442 | u32 val; |
| 443 | int ret; |
| 444 | |
| 445 | if (!node) |
| 446 | return -EINVAL; |
| 447 | |
| 448 | /* Parse the card name from DT */ |
| 449 | snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name"); |
| 450 | |
| 451 | /* The off-codec widgets */ |
| 452 | if (of_property_read_bool(node, "simple-audio-card,widgets")) { |
| 453 | ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card, |
| 454 | "simple-audio-card,widgets"); |
| 455 | if (ret) |
| 456 | return ret; |
| 457 | } |
| 458 | |
| 459 | /* DAPM routes */ |
| 460 | if (of_property_read_bool(node, "simple-audio-card,routing")) { |
| 461 | ret = snd_soc_of_parse_audio_routing(&priv->snd_card, |
| 462 | "simple-audio-card,routing"); |
| 463 | if (ret) |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | /* Factor to mclk, used in hw_params() */ |
| 468 | ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val); |
| 469 | if (ret == 0) |
| 470 | priv->mclk_fs = val; |
| 471 | |
| 472 | dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ? |
| 473 | priv->snd_card.name : ""); |
| 474 | |
| 475 | /* Single/Muti DAI link(s) & New style of DT node */ |
| 476 | if (of_get_child_by_name(node, "simple-audio-card,dai-link")) { |
| 477 | struct device_node *np = NULL; |
| 478 | int i = 0; |
| 479 | |
| 480 | for_each_child_of_node(node, np) { |
| 481 | dev_dbg(dev, "\tlink %d:\n", i); |
| 482 | ret = asoc_simple_card_dai_link_of(np, priv, |
| 483 | i, false); |
| 484 | if (ret < 0) { |
| 485 | of_node_put(np); |
| 486 | return ret; |
| 487 | } |
| 488 | i++; |
| 489 | } |
| 490 | } else { |
| 491 | /* For single DAI link & old style of DT node */ |
| 492 | ret = asoc_simple_card_dai_link_of(node, priv, 0, true); |
| 493 | if (ret < 0) |
| 494 | return ret; |
| 495 | } |
| 496 | |
| 497 | priv->gpio_hp_det = of_get_named_gpio_flags(node, |
| 498 | "simple-audio-card,hp-det-gpio", 0, &flags); |
| 499 | priv->gpio_hp_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW); |
| 500 | if (priv->gpio_hp_det == -EPROBE_DEFER) |
| 501 | return -EPROBE_DEFER; |
| 502 | |
| 503 | priv->gpio_mic_det = of_get_named_gpio_flags(node, |
| 504 | "simple-audio-card,mic-det-gpio", 0, &flags); |
| 505 | priv->gpio_mic_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW); |
| 506 | if (priv->gpio_mic_det == -EPROBE_DEFER) |
| 507 | return -EPROBE_DEFER; |
| 508 | |
| 509 | if (!priv->snd_card.name) |
| 510 | priv->snd_card.name = priv->snd_card.dai_link->name; |
| 511 | |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | /* Decrease the reference count of the device nodes */ |
| 516 | static int asoc_simple_card_unref(struct snd_soc_card *card) |
| 517 | { |
| 518 | struct snd_soc_dai_link *dai_link; |
| 519 | int num_links; |
| 520 | |
| 521 | for (num_links = 0, dai_link = card->dai_link; |
| 522 | num_links < card->num_links; |
| 523 | num_links++, dai_link++) { |
| 524 | of_node_put(dai_link->cpu_of_node); |
| 525 | of_node_put(dai_link->codec_of_node); |
| 526 | } |
| 527 | return 0; |
| 528 | } |
| 529 | |
| 530 | static int asoc_simple_card_probe(struct platform_device *pdev) |
| 531 | { |
| 532 | struct simple_card_data *priv; |
| 533 | struct snd_soc_dai_link *dai_link; |
| 534 | struct device_node *np = pdev->dev.of_node; |
| 535 | struct device *dev = &pdev->dev; |
| 536 | int num_links, ret; |
| 537 | |
| 538 | /* Get the number of DAI links */ |
| 539 | if (np && of_get_child_by_name(np, "simple-audio-card,dai-link")) |
| 540 | num_links = of_get_child_count(np); |
| 541 | else |
| 542 | num_links = 1; |
| 543 | |
| 544 | /* Allocate the private data and the DAI link array */ |
| 545 | priv = devm_kzalloc(dev, |
| 546 | sizeof(*priv) + sizeof(*dai_link) * num_links, |
| 547 | GFP_KERNEL); |
| 548 | if (!priv) |
| 549 | return -ENOMEM; |
| 550 | |
| 551 | /* Init snd_soc_card */ |
| 552 | priv->snd_card.owner = THIS_MODULE; |
| 553 | priv->snd_card.dev = dev; |
| 554 | dai_link = priv->dai_link; |
| 555 | priv->snd_card.dai_link = dai_link; |
| 556 | priv->snd_card.num_links = num_links; |
| 557 | |
| 558 | priv->gpio_hp_det = -ENOENT; |
| 559 | priv->gpio_mic_det = -ENOENT; |
| 560 | |
| 561 | /* Get room for the other properties */ |
| 562 | priv->dai_props = devm_kzalloc(dev, |
| 563 | sizeof(*priv->dai_props) * num_links, |
| 564 | GFP_KERNEL); |
| 565 | if (!priv->dai_props) |
| 566 | return -ENOMEM; |
| 567 | |
| 568 | if (np && of_device_is_available(np)) { |
| 569 | |
| 570 | ret = asoc_simple_card_parse_of(np, priv); |
| 571 | if (ret < 0) { |
| 572 | if (ret != -EPROBE_DEFER) |
| 573 | dev_err(dev, "parse error %d\n", ret); |
| 574 | goto err; |
| 575 | } |
| 576 | |
| 577 | } else { |
| 578 | struct asoc_simple_card_info *cinfo; |
| 579 | |
| 580 | cinfo = dev->platform_data; |
| 581 | if (!cinfo) { |
| 582 | dev_err(dev, "no info for asoc-simple-card\n"); |
| 583 | return -EINVAL; |
| 584 | } |
| 585 | |
| 586 | if (!cinfo->name || |
| 587 | !cinfo->codec_dai.name || |
| 588 | !cinfo->codec || |
| 589 | !cinfo->platform || |
| 590 | !cinfo->cpu_dai.name) { |
| 591 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); |
| 592 | return -EINVAL; |
| 593 | } |
| 594 | |
| 595 | priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name; |
| 596 | dai_link->name = cinfo->name; |
| 597 | dai_link->stream_name = cinfo->name; |
| 598 | dai_link->platform_name = cinfo->platform; |
| 599 | dai_link->codec_name = cinfo->codec; |
| 600 | dai_link->cpu_dai_name = cinfo->cpu_dai.name; |
| 601 | dai_link->codec_dai_name = cinfo->codec_dai.name; |
| 602 | dai_link->dai_fmt = cinfo->daifmt; |
| 603 | dai_link->init = asoc_simple_card_dai_init; |
| 604 | memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai, |
| 605 | sizeof(priv->dai_props->cpu_dai)); |
| 606 | memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai, |
| 607 | sizeof(priv->dai_props->codec_dai)); |
| 608 | |
| 609 | } |
| 610 | |
| 611 | snd_soc_card_set_drvdata(&priv->snd_card, priv); |
| 612 | |
| 613 | ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); |
| 614 | if (ret >= 0) |
| 615 | return ret; |
| 616 | |
| 617 | err: |
| 618 | asoc_simple_card_unref(&priv->snd_card); |
| 619 | return ret; |
| 620 | } |
| 621 | |
| 622 | static int asoc_simple_card_remove(struct platform_device *pdev) |
| 623 | { |
| 624 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 625 | struct simple_card_data *priv = snd_soc_card_get_drvdata(card); |
| 626 | |
| 627 | if (gpio_is_valid(priv->gpio_hp_det)) |
| 628 | snd_soc_jack_free_gpios(&simple_card_hp_jack, 1, |
| 629 | &simple_card_hp_jack_gpio); |
| 630 | if (gpio_is_valid(priv->gpio_mic_det)) |
| 631 | snd_soc_jack_free_gpios(&simple_card_mic_jack, 1, |
| 632 | &simple_card_mic_jack_gpio); |
| 633 | |
| 634 | return asoc_simple_card_unref(card); |
| 635 | } |
| 636 | |
| 637 | static const struct of_device_id asoc_simple_of_match[] = { |
| 638 | { .compatible = "simple-audio-card", }, |
| 639 | {}, |
| 640 | }; |
| 641 | MODULE_DEVICE_TABLE(of, asoc_simple_of_match); |
| 642 | |
| 643 | static struct platform_driver asoc_simple_card = { |
| 644 | .driver = { |
| 645 | .name = "asoc-simple-card", |
| 646 | .of_match_table = asoc_simple_of_match, |
| 647 | }, |
| 648 | .probe = asoc_simple_card_probe, |
| 649 | .remove = asoc_simple_card_remove, |
| 650 | }; |
| 651 | |
| 652 | module_platform_driver(asoc_simple_card); |
| 653 | |
| 654 | MODULE_ALIAS("platform:asoc-simple-card"); |
| 655 | MODULE_LICENSE("GPL"); |
| 656 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); |
| 657 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |