target/linux/ramips/patches-4.4/0048-asoc-add-mt7620-support.patch

   1 From 7f29222b1731e8182ba94a331531dec18865a1e4 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 27 Jul 2014 09:31:47 +0100
   4 Subject: [PATCH 48/53] asoc: add mt7620 support
   5
   6 Signed-off-by: John Crispin <blogic@openwrt.org>
   7 ---
   8  arch/mips/ralink/of.c            |    2 +
   9  sound/soc/Kconfig                |    1 +
  10  sound/soc/Makefile               |    1 +
  11  sound/soc/ralink/Kconfig         |   15 ++
  12  sound/soc/ralink/Makefile        |   11 +
  13  sound/soc/ralink/mt7620-i2s.c    |  436 ++++++++++++++++++++++++++++++++++++++
  14  sound/soc/ralink/mt7620-wm8960.c |  233 ++++++++++++++++++++
  15  7 files changed, 699 insertions(+)
  16  create mode 100644 sound/soc/ralink/Kconfig
  17  create mode 100644 sound/soc/ralink/Makefile
  18  create mode 100644 sound/soc/ralink/mt7620-i2s.c
  19  create mode 100644 sound/soc/ralink/mt7620-wm8960.c
  20
  21 --- a/arch/mips/ralink/of.c
  22 +++ b/arch/mips/ralink/of.c
  23 @@ -15,6 +15,7 @@
  24  #include <linux/of_fdt.h>
  25  #include <linux/kernel.h>
  26  #include <linux/bootmem.h>
  27 +#include <linux/module.h>
  28  #include <linux/of_platform.h>
  29  #include <linux/of_address.h>
  30
  31 @@ -26,6 +27,7 @@
  32  #include "common.h"
  33
  34  __iomem void *rt_sysc_membase;
  35 +EXPORT_SYMBOL(rt_sysc_membase);
  36  __iomem void *rt_memc_membase;
  37
  38  __iomem void *plat_of_remap_node(const char *node)
  39 --- a/sound/soc/Kconfig
  40 +++ b/sound/soc/Kconfig
  41 @@ -56,6 +56,7 @@ source "sound/soc/mxs/Kconfig"
  42  source "sound/soc/pxa/Kconfig"
  43  source "sound/soc/qcom/Kconfig"
  44  source "sound/soc/rockchip/Kconfig"
  45 +source "sound/soc/ralink/Kconfig"
  46  source "sound/soc/samsung/Kconfig"
  47  source "sound/soc/sh/Kconfig"
  48  source "sound/soc/sirf/Kconfig"
  49 --- a/sound/soc/Makefile
  50 +++ b/sound/soc/Makefile
  51 @@ -36,6 +36,7 @@ obj-$(CONFIG_SND_SOC) += kirkwood/
  52  obj-$(CONFIG_SND_SOC)  += pxa/
  53  obj-$(CONFIG_SND_SOC)  += qcom/
  54  obj-$(CONFIG_SND_SOC)  += rockchip/
  55 +obj-$(CONFIG_SND_SOC)  += ralink/
  56  obj-$(CONFIG_SND_SOC)  += samsung/
  57  obj-$(CONFIG_SND_SOC)  += sh/
  58  obj-$(CONFIG_SND_SOC)  += sirf/
  59 --- /dev/null
  60 +++ b/sound/soc/ralink/Kconfig
  61 @@ -0,0 +1,15 @@
  62 +config SND_MT7620_SOC_I2S
  63 +       depends on SOC_MT7620 && SND_SOC
  64 +       select SND_SOC_GENERIC_DMAENGINE_PCM
  65 +       tristate "SoC Audio (I2S protocol) for Ralink MT7620 SoC"
  66 +       help
  67 +         Say Y if you want to use I2S protocol and I2S codec on Ingenic MT7620
  68 +         based boards.
  69 +
  70 +config SND_MT7620_SOC_WM8960
  71 +       tristate "SoC Audio support for Ralink WM8960"
  72 +       select SND_MT7620_SOC_I2S
  73 +       select SND_SOC_WM8960
  74 +       help
  75 +         Say Y if you want to add support for ASoC audio on the Qi LB60 board
  76 +         a.k.a Qi Ben NanoNote.
  77 --- /dev/null
  78 +++ b/sound/soc/ralink/Makefile
  79 @@ -0,0 +1,11 @@
  80 +#
  81 +# Jz4740 Platform Support
  82 +#
  83 +snd-soc-mt7620-i2s-objs := mt7620-i2s.o
  84 +
  85 +obj-$(CONFIG_SND_MT7620_SOC_I2S) += snd-soc-mt7620-i2s.o
  86 +
  87 +# Jz4740 Machine Support
  88 +snd-soc-mt7620-wm8960-objs := mt7620-wm8960.o
  89 +
  90 +obj-$(CONFIG_SND_MT7620_SOC_WM8960) += snd-soc-mt7620-wm8960.o
  91 --- /dev/null
  92 +++ b/sound/soc/ralink/mt7620-i2s.c
  93 @@ -0,0 +1,436 @@
  94 +/*
  95 + *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
  96 + *
  97 + *  This program is free software; you can redistribute it and/or modify it
  98 + *  under  the terms of the GNU General  Public License as published by the
  99 + *  Free Software Foundation;  either version 2 of the License, or (at your
 100 + *  option) any later version.
 101 + *
 102 + *  You should have received a copy of the GNU General Public License along
 103 + *  with this program; if not, write to the Free Software Foundation, Inc.,
 104 + *  675 Mass Ave, Cambridge, MA 02139, USA.
 105 + *
 106 + */
 107 +
 108 +#include <linux/init.h>
 109 +#include <linux/io.h>
 110 +#include <linux/kernel.h>
 111 +#include <linux/module.h>
 112 +#include <linux/platform_device.h>
 113 +#include <linux/slab.h>
 114 +
 115 +#include <linux/delay.h>
 116 +
 117 +#include <linux/dma-mapping.h>
 118 +
 119 +#include <sound/core.h>
 120 +#include <sound/pcm.h>
 121 +#include <sound/pcm_params.h>
 122 +#include <sound/soc.h>
 123 +#include <sound/initval.h>
 124 +#include <sound/dmaengine_pcm.h>
 125 +
 126 +#include <ralink_regs.h>
 127 +
 128 +#define I2S_REG_CFG0           0x00
 129 +#define I2S_REG_CFG0_EN                BIT(31)
 130 +#define I2S_REG_CFG0_DMA_EN    BIT(30)
 131 +#define I2S_REG_CFG0_BYTE_SWAP BIT(28)
 132 +#define I2S_REG_CFG0_TX_EN     BIT(24)
 133 +#define I2S_REG_CFG0_RX_EN     BIT(20)
 134 +#define I2S_REG_CFG0_SLAVE     BIT(16)
 135 +#define I2S_REG_CFG0_RX_THRES  12
 136 +#define I2S_REG_CFG0_TX_THRES  4
 137 +#define I2S_REG_CFG0_DFT_THRES (4 << I2S_REG_CFG0_RX_THRES) | \
 138 +                                       (4 << I2S_REG_CFG0_TX_THRES)
 139 +
 140 +#define I2S_REG_INT_STATUS     0x04
 141 +#define I2S_REG_INT_EN         0x08
 142 +#define I2S_REG_FF_STATUS      0x0c
 143 +#define I2S_REG_WREG           0x10
 144 +#define I2S_REG_RREG           0x14
 145 +#define I2S_REG_CFG1           0x18
 146 +
 147 +#define I2S_REG_DIVCMP         0x20
 148 +#define I2S_REG_DIVINT         0x24
 149 +#define I2S_REG_CLK_EN         BIT(31)
 150 +
 151 +struct mt7620_i2s {
 152 +       struct resource *mem;
 153 +       void __iomem *base;
 154 +       dma_addr_t phys_base;
 155 +
 156 +       struct snd_dmaengine_dai_dma_data playback_dma_data;
 157 +       struct snd_dmaengine_dai_dma_data capture_dma_data;
 158 +};
 159 +
 160 +static inline uint32_t mt7620_i2s_read(const struct mt7620_i2s *i2s,
 161 +       unsigned int reg)
 162 +{
 163 +       return readl(i2s->base + reg);
 164 +}
 165 +
 166 +static inline void mt7620_i2s_write(const struct mt7620_i2s *i2s,
 167 +       unsigned int reg, uint32_t value)
 168 +{
 169 +       //printk("i2s --> %p = 0x%08X\n", i2s->base + reg, value);
 170 +       writel(value, i2s->base + reg);
 171 +}
 172 +
 173 +static int mt7620_i2s_startup(struct snd_pcm_substream *substream,
 174 +       struct snd_soc_dai *dai)
 175 +{
 176 +       struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 177 +       uint32_t cfg;
 178 +
 179 +       if (dai->active)
 180 +               return 0;
 181 +
 182 +       cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
 183 +       cfg |= I2S_REG_CFG0_EN;
 184 +       mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
 185 +
 186 +       return 0;
 187 +}
 188 +
 189 +static void mt7620_i2s_shutdown(struct snd_pcm_substream *substream,
 190 +       struct snd_soc_dai *dai)
 191 +{
 192 +       struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 193 +       uint32_t cfg;
 194 +
 195 +       if (dai->active)
 196 +               return;
 197 +
 198 +       cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
 199 +       cfg &= ~I2S_REG_CFG0_EN;
 200 +       mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
 201 +}
 202 +
 203 +static int mt7620_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 204 +       struct snd_soc_dai *dai)
 205 +{
 206 +       struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 207 +
 208 +       uint32_t cfg;
 209 +       uint32_t mask;
 210 +
 211 +       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 212 +               mask = I2S_REG_CFG0_TX_EN;
 213 +       else
 214 +               mask = I2S_REG_CFG0_RX_EN;
 215 +
 216 +       cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
 217 +
 218 +       switch (cmd) {
 219 +       case SNDRV_PCM_TRIGGER_START:
 220 +       case SNDRV_PCM_TRIGGER_RESUME:
 221 +       case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 222 +               cfg |= mask;
 223 +               break;
 224 +       case SNDRV_PCM_TRIGGER_STOP:
 225 +       case SNDRV_PCM_TRIGGER_SUSPEND:
 226 +       case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 227 +               cfg &= ~mask;
 228 +               break;
 229 +       default:
 230 +               return -EINVAL;
 231 +       }
 232 +
 233 +       if (cfg & (I2S_REG_CFG0_TX_EN | I2S_REG_CFG0_RX_EN))
 234 +               cfg |= I2S_REG_CFG0_DMA_EN;
 235 +       else
 236 +               cfg &= ~I2S_REG_CFG0_DMA_EN;
 237 +
 238 +       mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
 239 +
 240 +       return 0;
 241 +}
 242 +
 243 +static int mt7620_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 244 +{
 245 +       struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 246 +       uint32_t cfg;
 247 +
 248 +       cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
 249 +
 250 +       switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 251 +       case SND_SOC_DAIFMT_CBS_CFS:
 252 +               cfg |= I2S_REG_CFG0_SLAVE;
 253 +               break;
 254 +       case SND_SOC_DAIFMT_CBM_CFM:
 255 +               cfg &= ~I2S_REG_CFG0_SLAVE;
 256 +               break;
 257 +       case SND_SOC_DAIFMT_CBM_CFS:
 258 +       default:
 259 +               return -EINVAL;
 260 +       }
 261 +
 262 +       switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 263 +       case SND_SOC_DAIFMT_I2S:
 264 +       case SND_SOC_DAIFMT_MSB:
 265 +               cfg &= ~I2S_REG_CFG0_BYTE_SWAP;
 266 +               break;
 267 +       case SND_SOC_DAIFMT_LSB:
 268 +               cfg |= I2S_REG_CFG0_BYTE_SWAP;
 269 +               break;
 270 +       default:
 271 +               return -EINVAL;
 272 +       }
 273 +
 274 +       switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 275 +       case SND_SOC_DAIFMT_NB_NF:
 276 +               break;
 277 +       default:
 278 +               return -EINVAL;
 279 +       }
 280 +
 281 +       mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
 282 +
 283 +       return 0;
 284 +}
 285 +
 286 +static int mt7620_i2s_hw_params(struct snd_pcm_substream *substream,
 287 +       struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 288 +{
 289 +
 290 +       return 0;
 291 +}
 292 +
 293 +unsigned long i2sMaster_inclk_int[11] = {
 294 +       78,     56,     52,     39,     28,     26,     19,     14,     13,     9,      6};
 295 +unsigned long i2sMaster_inclk_comp[11] = {
 296 +       64,     352,    42,     32,     176,    21,     272,    88,     10,     455,    261};
 297 +
 298 +
 299 +static int mt7620_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 300 +       unsigned int freq, int dir)
 301 +{
 302 +        struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 303 +
 304 +       printk("Internal REFCLK with fractional division\n");
 305 +
 306 +       mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
 307 +       mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
 308 +               i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
 309 +
 310 +/*     struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 311 +       struct clk *parent;
 312 +       int ret = 0;
 313 +
 314 +       switch (clk_id) {
 315 +       case JZ4740_I2S_CLKSRC_EXT:
 316 +               parent = clk_get(NULL, "ext");
 317 +               clk_set_parent(i2s->clk_i2s, parent);
 318 +               break;
 319 +       case JZ4740_I2S_CLKSRC_PLL:
 320 +               parent = clk_get(NULL, "pll half");
 321 +               clk_set_parent(i2s->clk_i2s, parent);
 322 +               ret = clk_set_rate(i2s->clk_i2s, freq);
 323 +               break;
 324 +       default:
 325 +               return -EINVAL;
 326 +       }
 327 +       clk_put(parent);
 328 +
 329 +       return ret;*/
 330 +       return 0;
 331 +}
 332 +
 333 +static void mt7620_i2c_init_pcm_config(struct mt7620_i2s *i2s)
 334 +{
 335 +       struct snd_dmaengine_dai_dma_data *dma_data;
 336 +
 337 +       /* Playback */
 338 +       dma_data = &i2s->playback_dma_data;
 339 +       dma_data->maxburst = 16;
 340 +       dma_data->slave_id = 2; //JZ4740_DMA_TYPE_AIC_TRANSMIT;
 341 +       dma_data->addr = i2s->phys_base + I2S_REG_WREG;
 342 +
 343 +       /* Capture */
 344 +       dma_data = &i2s->capture_dma_data;
 345 +       dma_data->maxburst = 16;
 346 +       dma_data->slave_id = 3; //JZ4740_DMA_TYPE_AIC_RECEIVE;
 347 +       dma_data->addr = i2s->phys_base + I2S_REG_RREG;
 348 +}
 349 +
 350 +static int mt7620_i2s_dai_probe(struct snd_soc_dai *dai)
 351 +{
 352 +       struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
 353 +       uint32_t data;
 354 +
 355 +       mt7620_i2c_init_pcm_config(i2s);
 356 +       dai->playback_dma_data = &i2s->playback_dma_data;
 357 +       dai->capture_dma_data = &i2s->capture_dma_data;
 358 +
 359 +       /* set share pins to i2s/gpio mode and i2c mode */
 360 +       data = rt_sysc_r32(0x60);
 361 +       data &= 0xFFFFFFE2;
 362 +       data |= 0x00000018;
 363 +       rt_sysc_w32(data, 0x60);
 364 +
 365 +       printk("Internal REFCLK with fractional division\n");
 366 +
 367 +       mt7620_i2s_write(i2s, I2S_REG_CFG0, I2S_REG_CFG0_DFT_THRES);
 368 +       mt7620_i2s_write(i2s, I2S_REG_CFG1, 0);
 369 +       mt7620_i2s_write(i2s, I2S_REG_INT_EN, 0);
 370 +
 371 +       mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
 372 +       mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
 373 +               i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
 374 +
 375 +       return 0;
 376 +}
 377 +
 378 +static int mt7620_i2s_dai_remove(struct snd_soc_dai *dai)
 379 +{
 380 +       return 0;
 381 +}
 382 +
 383 +static const struct snd_soc_dai_ops mt7620_i2s_dai_ops = {
 384 +       .startup = mt7620_i2s_startup,
 385 +       .shutdown = mt7620_i2s_shutdown,
 386 +       .trigger = mt7620_i2s_trigger,
 387 +       .hw_params = mt7620_i2s_hw_params,
 388 +       .set_fmt = mt7620_i2s_set_fmt,
 389 +       .set_sysclk = mt7620_i2s_set_sysclk,
 390 +};
 391 +
 392 +#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 393 +                        SNDRV_PCM_FMTBIT_S24_LE)
 394 +
 395 +static struct snd_soc_dai_driver mt7620_i2s_dai = {
 396 +       .probe = mt7620_i2s_dai_probe,
 397 +       .remove = mt7620_i2s_dai_remove,
 398 +       .playback = {
 399 +               .channels_min = 1,
 400 +               .channels_max = 2,
 401 +               .rates = SNDRV_PCM_RATE_8000_48000,
 402 +               .formats = JZ4740_I2S_FMTS,
 403 +       },
 404 +       .capture = {
 405 +               .channels_min = 2,
 406 +               .channels_max = 2,
 407 +               .rates = SNDRV_PCM_RATE_8000_48000,
 408 +               .formats = JZ4740_I2S_FMTS,
 409 +       },
 410 +       .symmetric_rates = 1,
 411 +       .ops = &mt7620_i2s_dai_ops,
 412 +};
 413 +
 414 +static const struct snd_pcm_hardware mt7620_pcm_hardware = {
 415 +       .info = SNDRV_PCM_INFO_MMAP |
 416 +               SNDRV_PCM_INFO_MMAP_VALID |
 417 +               SNDRV_PCM_INFO_INTERLEAVED |
 418 +               SNDRV_PCM_INFO_BLOCK_TRANSFER,
 419 +       .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 420 +       .period_bytes_min       = PAGE_SIZE,
 421 +       .period_bytes_max       = 64 * 1024,
 422 +       .periods_min            = 2,
 423 +       .periods_max            = 128,
 424 +       .buffer_bytes_max       = 128 * 1024,
 425 +       .fifo_size              = 32,
 426 +};
 427 +
 428 +static const struct snd_dmaengine_pcm_config mt7620_dmaengine_pcm_config = {
 429 +       .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
 430 +       .pcm_hardware = &mt7620_pcm_hardware,
 431 +       .prealloc_buffer_size = 256 * PAGE_SIZE,
 432 +};
 433 +
 434 +static const struct snd_soc_component_driver mt7620_i2s_component = {
 435 +       .name = "mt7620-i2s",
 436 +};
 437 +
 438 +static int mt7620_i2s_dev_probe(struct platform_device *pdev)
 439 +{
 440 +       struct mt7620_i2s *i2s;
 441 +       int ret;
 442 +
 443 +       snd_dmaengine_pcm_register(&pdev->dev,
 444 +               &mt7620_dmaengine_pcm_config,
 445 +               SND_DMAENGINE_PCM_FLAG_COMPAT);
 446 +
 447 +       i2s = kzalloc(sizeof(*i2s), GFP_KERNEL);
 448 +       if (!i2s)
 449 +               return -ENOMEM;
 450 +
 451 +       i2s->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 452 +       if (!i2s->mem) {
 453 +               ret = -ENOENT;
 454 +               goto err_free;
 455 +       }
 456 +
 457 +       i2s->mem = request_mem_region(i2s->mem->start, resource_size(i2s->mem),
 458 +                               pdev->name);
 459 +       if (!i2s->mem) {
 460 +               ret = -EBUSY;
 461 +               goto err_free;
 462 +       }
 463 +
 464 +       i2s->base = ioremap_nocache(i2s->mem->start, resource_size(i2s->mem));
 465 +       if (!i2s->base) {
 466 +               ret = -EBUSY;
 467 +               goto err_release_mem_region;
 468 +       }
 469 +
 470 +       i2s->phys_base = i2s->mem->start;
 471 +
 472 +       platform_set_drvdata(pdev, i2s);
 473 +       ret = snd_soc_register_component(&pdev->dev, &mt7620_i2s_component,
 474 +                                        &mt7620_i2s_dai, 1);
 475 +
 476 +       if (!ret) {
 477 +               dev_err(&pdev->dev, "loaded\n");
 478 +               return ret;
 479 +       }
 480 +
 481 +       dev_err(&pdev->dev, "Failed to register DAI\n");
 482 +       iounmap(i2s->base);
 483 +
 484 +err_release_mem_region:
 485 +       release_mem_region(i2s->mem->start, resource_size(i2s->mem));
 486 +err_free:
 487 +       kfree(i2s);
 488 +
 489 +       return ret;
 490 +}
 491 +
 492 +static int mt7620_i2s_dev_remove(struct platform_device *pdev)
 493 +{
 494 +       struct mt7620_i2s *i2s = platform_get_drvdata(pdev);
 495 +
 496 +       snd_soc_unregister_component(&pdev->dev);
 497 +
 498 +       iounmap(i2s->base);
 499 +       release_mem_region(i2s->mem->start, resource_size(i2s->mem));
 500 +
 501 +       kfree(i2s);
 502 +
 503 +       snd_dmaengine_pcm_unregister(&pdev->dev);
 504 +
 505 +       return 0;
 506 +}
 507 +
 508 +static const struct of_device_id mt7620_i2s_match[] = {
 509 +       { .compatible = "ralink,mt7620a-i2s" },
 510 +       {},
 511 +};
 512 +MODULE_DEVICE_TABLE(of, mt7620_i2s_match);
 513 +
 514 +static struct platform_driver mt7620_i2s_driver = {
 515 +       .probe = mt7620_i2s_dev_probe,
 516 +       .remove = mt7620_i2s_dev_remove,
 517 +       .driver = {
 518 +               .name = "mt7620-i2s",
 519 +               .owner = THIS_MODULE,
 520 +               .of_match_table = mt7620_i2s_match,
 521 +       },
 522 +};
 523 +
 524 +module_platform_driver(mt7620_i2s_driver);
 525 +
 526 +MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
 527 +MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
 528 +MODULE_LICENSE("GPL");
 529 +MODULE_ALIAS("platform:mt7620-i2s");
 530 --- /dev/null
 531 +++ b/sound/soc/ralink/mt7620-wm8960.c
 532 @@ -0,0 +1,233 @@
 533 +/*
 534 + * Copyright 2013 Freescale Semiconductor, Inc.
 535 + *
 536 + * Based on mt7620-sgtl5000.c
 537 + * Copyright 2012 Freescale Semiconductor, Inc.
 538 + * Copyright 2012 Linaro Ltd.
 539 + *
 540 + * The code contained herein is licensed under the GNU General Public
 541 + * License. You may obtain a copy of the GNU General Public License
 542 + * Version 2 or later at the following locations:
 543 + *
 544 + * http://www.opensource.org/licenses/gpl-license.html
 545 + * http://www.gnu.org/copyleft/gpl.html
 546 + */
 547 +
 548 +#include <linux/module.h>
 549 +#include <linux/of_platform.h>
 550 +#include <linux/i2c.h>
 551 +#include <linux/slab.h>
 552 +#include <sound/soc.h>
 553 +#include <sound/pcm_params.h>
 554 +#include <sound/soc-dapm.h>
 555 +#include <linux/pinctrl/consumer.h>
 556 +
 557 +#include "../codecs/wm8960.h"
 558 +
 559 +#define DAI_NAME_SIZE  32
 560 +
 561 +struct mt7620_wm8960_data {
 562 +       struct snd_soc_dai_link dai;
 563 +       struct snd_soc_card card;
 564 +       char codec_dai_name[DAI_NAME_SIZE];
 565 +       char platform_name[DAI_NAME_SIZE];
 566 +       unsigned int clk_frequency;
 567 +};
 568 +
 569 +struct mt7620_priv {
 570 +       struct platform_device *pdev;
 571 +};
 572 +static struct mt7620_priv card_priv;
 573 +
 574 +static const struct snd_soc_dapm_widget mt7620_wm8960_dapm_widgets[] = {
 575 +       SND_SOC_DAPM_HP("Headphone Jack", NULL),
 576 +       SND_SOC_DAPM_SPK("Ext Spk", NULL),
 577 +       SND_SOC_DAPM_MIC("AMIC", NULL),
 578 +       SND_SOC_DAPM_MIC("DMIC", NULL),
 579 +};
 580 +
 581 +static int sample_rate = 44100;
 582 +static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE;
 583 +
 584 +static int mt7620_hifi_hw_params(struct snd_pcm_substream *substream,
 585 +               struct snd_pcm_hw_params *params)
 586 +{
 587 +       sample_rate = params_rate(params);
 588 +       sample_format = params_format(params);
 589 +
 590 +       return 0;
 591 +}
 592 +
 593 +static struct snd_soc_ops mt7620_hifi_ops = {
 594 +       .hw_params = mt7620_hifi_hw_params,
 595 +};
 596 +
 597 +static int mt7620_wm8960_set_bias_level(struct snd_soc_card *card,
 598 +                                       struct snd_soc_dapm_context *dapm,
 599 +                                       enum snd_soc_bias_level level)
 600 +{
 601 +       struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
 602 +       struct mt7620_priv *priv = &card_priv;
 603 +       struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
 604 +       struct device *dev = &priv->pdev->dev;
 605 +       int ret;
 606 +
 607 +       if (dapm->dev != codec_dai->dev)
 608 +               return 0;
 609 +
 610 +       switch (level) {
 611 +       case SND_SOC_BIAS_PREPARE:
 612 +               if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
 613 +               }
 614 +               break;
 615 +
 616 +       case SND_SOC_BIAS_STANDBY:
 617 +               if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
 618 +                       ret = snd_soc_dai_set_sysclk(codec_dai,
 619 +                                       WM8960_SYSCLK_MCLK, data->clk_frequency,
 620 +                                       SND_SOC_CLOCK_IN);
 621 +                       if (ret < 0) {
 622 +                               dev_err(dev,
 623 +                                       "failed to switch away from FLL: %d\n",
 624 +                                       ret);
 625 +                               return ret;
 626 +                       }
 627 +               }
 628 +               break;
 629 +
 630 +       default:
 631 +               break;
 632 +       }
 633 +
 634 +       return 0;
 635 +}
 636 +
 637 +static int mt7620_wm8960_late_probe(struct snd_soc_card *card)
 638 +{
 639 +       struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
 640 +       struct mt7620_priv *priv = &card_priv;
 641 +       struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
 642 +       struct device *dev = &priv->pdev->dev;
 643 +       int ret;
 644 +
 645 +       ret = snd_soc_dai_set_sysclk(codec_dai, WM8960_SYSCLK_MCLK,
 646 +                       data->clk_frequency, SND_SOC_CLOCK_IN);
 647 +       if (ret < 0)
 648 +               dev_err(dev, "failed to set sysclk in %s\n", __func__);
 649 +
 650 +       return ret;
 651 +}
 652 +
 653 +static int mt7620_wm8960_probe(struct platform_device *pdev)
 654 +{
 655 +       struct device_node *i2s_np, *codec_np;
 656 +       struct platform_device *i2s_pdev;
 657 +       struct mt7620_priv *priv = &card_priv;
 658 +       struct i2c_client *codec_dev;
 659 +       struct mt7620_wm8960_data *data;
 660 +       int ret;
 661 +
 662 +       priv->pdev = pdev;
 663 +
 664 +       i2s_np = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
 665 +       codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
 666 +       if (!i2s_np || !codec_np) {
 667 +               dev_err(&pdev->dev, "phandle missing or invalid\n");
 668 +               ret = -EINVAL;
 669 +               goto fail;
 670 +       }
 671 +
 672 +       i2s_pdev = of_find_device_by_node(i2s_np);
 673 +       if (!i2s_pdev) {
 674 +               dev_err(&pdev->dev, "failed to find SSI platform device\n");
 675 +               ret = -EINVAL;
 676 +               goto fail;
 677 +       }
 678 +       codec_dev = of_find_i2c_device_by_node(codec_np);
 679 +       if (!codec_dev || !codec_dev->dev.driver) {
 680 +               dev_err(&pdev->dev, "failed to find codec platform device\n");
 681 +               ret = -EINVAL;
 682 +               goto fail;
 683 +       }
 684 +
 685 +       data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 686 +       if (!data) {
 687 +               ret = -ENOMEM;
 688 +               goto fail;
 689 +       }
 690 +
 691 +       data->clk_frequency = 12000000;
 692 +       data->dai.name = "HiFi";
 693 +       data->dai.stream_name = "HiFi";
 694 +       data->dai.codec_dai_name = "wm8960-hifi";
 695 +       data->dai.codec_of_node = codec_np;
 696 +       data->dai.cpu_dai_name = dev_name(&i2s_pdev->dev);
 697 +       data->dai.platform_of_node = i2s_np;
 698 +       data->dai.ops = &mt7620_hifi_ops;
 699 +       data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 700 +                           SND_SOC_DAIFMT_CBM_CFM;
 701 +
 702 +       data->card.dev = &pdev->dev;
 703 +       ret = snd_soc_of_parse_card_name(&data->card, "model");
 704 +       if (ret)
 705 +               goto fail;
 706 +       ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 707 +       if (ret)
 708 +               goto fail;
 709 +       data->card.num_links = 1;
 710 +       data->card.dai_link = &data->dai;
 711 +       data->card.dapm_widgets = mt7620_wm8960_dapm_widgets;
 712 +       data->card.num_dapm_widgets = ARRAY_SIZE(mt7620_wm8960_dapm_widgets);
 713 +
 714 +       data->card.late_probe = mt7620_wm8960_late_probe;
 715 +       data->card.set_bias_level = mt7620_wm8960_set_bias_level;
 716 +
 717 +       platform_set_drvdata(pdev, &data->card);
 718 +       snd_soc_card_set_drvdata(&data->card, data);
 719 +
 720 +       ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
 721 +       if (ret) {
 722 +               dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 723 +               goto fail;
 724 +       }
 725 +
 726 +       of_node_put(i2s_np);
 727 +       of_node_put(codec_np);
 728 +
 729 +       return 0;
 730 +fail:
 731 +       if (i2s_np)
 732 +               of_node_put(i2s_np);
 733 +       if (codec_np)
 734 +               of_node_put(codec_np);
 735 +
 736 +       return ret;
 737 +}
 738 +
 739 +static int mt7620_wm8960_remove(struct platform_device *pdev)
 740 +{
 741 +       return 0;
 742 +}
 743 +
 744 +static const struct of_device_id mt7620_wm8960_dt_ids[] = {
 745 +       { .compatible = "mediatek,mt7620-audio-wm8960", },
 746 +       { /* sentinel */ }
 747 +};
 748 +MODULE_DEVICE_TABLE(of, mt7620_wm8960_dt_ids);
 749 +
 750 +static struct platform_driver mt7620_wm8960_driver = {
 751 +       .driver = {
 752 +               .name = "mt7620-wm8960",
 753 +               .owner = THIS_MODULE,
 754 +               .pm = &snd_soc_pm_ops,
 755 +               .of_match_table = mt7620_wm8960_dt_ids,
 756 +       },
 757 +       .probe = mt7620_wm8960_probe,
 758 +       .remove = mt7620_wm8960_remove,
 759 +};
 760 +module_platform_driver(mt7620_wm8960_driver);
 761 +
 762 +MODULE_AUTHOR("Freescale Semiconductor, Inc.");
 763 +MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
 764 +MODULE_LICENSE("GPL v2");
 765 +MODULE_ALIAS("platform:mt7620-wm8962");