Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License as published by the |
| 6 | * Free Software Foundation; either version 2 of the License, or (at your |
| 7 | * option) any later version. |
| 8 | * |
| 9 | * You should have received a copy of the GNU General Public License along |
| 10 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 11 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/slab.h> |
| 21 | |
| 22 | #include <linux/clk.h> |
| 23 | #include <linux/delay.h> |
| 24 | |
| 25 | #include <linux/dma-mapping.h> |
| 26 | |
| 27 | #include <sound/core.h> |
| 28 | #include <sound/pcm.h> |
| 29 | #include <sound/pcm_params.h> |
| 30 | #include <sound/soc.h> |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 31 | #include <sound/initval.h> |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 32 | #include <sound/dmaengine_pcm.h> |
| 33 | |
| 34 | #include <asm/mach-jz4740/dma.h> |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 35 | |
| 36 | #include "jz4740-i2s.h" |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 37 | |
| 38 | #define JZ_REG_AIC_CONF 0x00 |
| 39 | #define JZ_REG_AIC_CTRL 0x04 |
| 40 | #define JZ_REG_AIC_I2S_FMT 0x10 |
| 41 | #define JZ_REG_AIC_FIFO_STATUS 0x14 |
| 42 | #define JZ_REG_AIC_I2S_STATUS 0x1c |
| 43 | #define JZ_REG_AIC_CLK_DIV 0x30 |
| 44 | #define JZ_REG_AIC_FIFO 0x34 |
| 45 | |
| 46 | #define JZ_AIC_CONF_FIFO_RX_THRESHOLD_MASK (0xf << 12) |
| 47 | #define JZ_AIC_CONF_FIFO_TX_THRESHOLD_MASK (0xf << 8) |
| 48 | #define JZ_AIC_CONF_OVERFLOW_PLAY_LAST BIT(6) |
| 49 | #define JZ_AIC_CONF_INTERNAL_CODEC BIT(5) |
| 50 | #define JZ_AIC_CONF_I2S BIT(4) |
| 51 | #define JZ_AIC_CONF_RESET BIT(3) |
| 52 | #define JZ_AIC_CONF_BIT_CLK_MASTER BIT(2) |
| 53 | #define JZ_AIC_CONF_SYNC_CLK_MASTER BIT(1) |
| 54 | #define JZ_AIC_CONF_ENABLE BIT(0) |
| 55 | |
| 56 | #define JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 12 |
| 57 | #define JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 8 |
| 58 | |
| 59 | #define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19) |
| 60 | #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16) |
| 61 | #define JZ_AIC_CTRL_ENABLE_RX_DMA BIT(15) |
| 62 | #define JZ_AIC_CTRL_ENABLE_TX_DMA BIT(14) |
| 63 | #define JZ_AIC_CTRL_MONO_TO_STEREO BIT(11) |
| 64 | #define JZ_AIC_CTRL_SWITCH_ENDIANNESS BIT(10) |
| 65 | #define JZ_AIC_CTRL_SIGNED_TO_UNSIGNED BIT(9) |
| 66 | #define JZ_AIC_CTRL_FLUSH BIT(8) |
| 67 | #define JZ_AIC_CTRL_ENABLE_ROR_INT BIT(6) |
| 68 | #define JZ_AIC_CTRL_ENABLE_TUR_INT BIT(5) |
| 69 | #define JZ_AIC_CTRL_ENABLE_RFS_INT BIT(4) |
| 70 | #define JZ_AIC_CTRL_ENABLE_TFS_INT BIT(3) |
| 71 | #define JZ_AIC_CTRL_ENABLE_LOOPBACK BIT(2) |
| 72 | #define JZ_AIC_CTRL_ENABLE_PLAYBACK BIT(1) |
| 73 | #define JZ_AIC_CTRL_ENABLE_CAPTURE BIT(0) |
| 74 | |
| 75 | #define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET 19 |
| 76 | #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET 16 |
| 77 | |
| 78 | #define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12) |
| 79 | #define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4) |
| 80 | #define JZ_AIC_I2S_FMT_MSB BIT(0) |
| 81 | |
| 82 | #define JZ_AIC_I2S_STATUS_BUSY BIT(2) |
| 83 | |
| 84 | #define JZ_AIC_CLK_DIV_MASK 0xf |
| 85 | |
| 86 | struct jz4740_i2s { |
| 87 | struct resource *mem; |
| 88 | void __iomem *base; |
| 89 | dma_addr_t phys_base; |
| 90 | |
| 91 | struct clk *clk_aic; |
| 92 | struct clk *clk_i2s; |
| 93 | |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 94 | struct snd_dmaengine_dai_dma_data playback_dma_data; |
| 95 | struct snd_dmaengine_dai_dma_data capture_dma_data; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 96 | }; |
| 97 | |
| 98 | static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s, |
| 99 | unsigned int reg) |
| 100 | { |
| 101 | return readl(i2s->base + reg); |
| 102 | } |
| 103 | |
| 104 | static inline void jz4740_i2s_write(const struct jz4740_i2s *i2s, |
| 105 | unsigned int reg, uint32_t value) |
| 106 | { |
| 107 | writel(value, i2s->base + reg); |
| 108 | } |
| 109 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 110 | static int jz4740_i2s_startup(struct snd_pcm_substream *substream, |
| 111 | struct snd_soc_dai *dai) |
| 112 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 113 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 114 | uint32_t conf, ctrl; |
| 115 | |
| 116 | if (dai->active) |
| 117 | return 0; |
| 118 | |
| 119 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 120 | ctrl |= JZ_AIC_CTRL_FLUSH; |
| 121 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
| 122 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 123 | clk_prepare_enable(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 124 | |
| 125 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 126 | conf |= JZ_AIC_CONF_ENABLE; |
| 127 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static void jz4740_i2s_shutdown(struct snd_pcm_substream *substream, |
| 133 | struct snd_soc_dai *dai) |
| 134 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 135 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 136 | uint32_t conf; |
| 137 | |
Lars-Peter Clausen | 005967a | 2011-04-30 22:28:20 +0200 | [diff] [blame] | 138 | if (dai->active) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 139 | return; |
| 140 | |
| 141 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 142 | conf &= ~JZ_AIC_CONF_ENABLE; |
| 143 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 144 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 145 | clk_disable_unprepare(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | static int jz4740_i2s_trigger(struct snd_pcm_substream *substream, int cmd, |
| 149 | struct snd_soc_dai *dai) |
| 150 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 151 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 152 | |
| 153 | uint32_t ctrl; |
| 154 | uint32_t mask; |
| 155 | |
| 156 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 157 | mask = JZ_AIC_CTRL_ENABLE_PLAYBACK | JZ_AIC_CTRL_ENABLE_TX_DMA; |
| 158 | else |
| 159 | mask = JZ_AIC_CTRL_ENABLE_CAPTURE | JZ_AIC_CTRL_ENABLE_RX_DMA; |
| 160 | |
| 161 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 162 | |
| 163 | switch (cmd) { |
| 164 | case SNDRV_PCM_TRIGGER_START: |
| 165 | case SNDRV_PCM_TRIGGER_RESUME: |
| 166 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 167 | ctrl |= mask; |
| 168 | break; |
| 169 | case SNDRV_PCM_TRIGGER_STOP: |
| 170 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 171 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 172 | ctrl &= ~mask; |
| 173 | break; |
| 174 | default: |
| 175 | return -EINVAL; |
| 176 | } |
| 177 | |
| 178 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | static int jz4740_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 184 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 185 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 186 | |
| 187 | uint32_t format = 0; |
| 188 | uint32_t conf; |
| 189 | |
| 190 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 191 | |
| 192 | conf &= ~(JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER); |
| 193 | |
| 194 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 195 | case SND_SOC_DAIFMT_CBS_CFS: |
| 196 | conf |= JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER; |
| 197 | format |= JZ_AIC_I2S_FMT_ENABLE_SYS_CLK; |
| 198 | break; |
| 199 | case SND_SOC_DAIFMT_CBM_CFS: |
| 200 | conf |= JZ_AIC_CONF_SYNC_CLK_MASTER; |
| 201 | break; |
| 202 | case SND_SOC_DAIFMT_CBS_CFM: |
| 203 | conf |= JZ_AIC_CONF_BIT_CLK_MASTER; |
| 204 | break; |
| 205 | case SND_SOC_DAIFMT_CBM_CFM: |
| 206 | break; |
| 207 | default: |
| 208 | return -EINVAL; |
| 209 | } |
| 210 | |
| 211 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 212 | case SND_SOC_DAIFMT_MSB: |
| 213 | format |= JZ_AIC_I2S_FMT_MSB; |
| 214 | break; |
| 215 | case SND_SOC_DAIFMT_I2S: |
| 216 | break; |
| 217 | default: |
| 218 | return -EINVAL; |
| 219 | } |
| 220 | |
| 221 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 222 | case SND_SOC_DAIFMT_NB_NF: |
| 223 | break; |
| 224 | default: |
| 225 | return -EINVAL; |
| 226 | } |
| 227 | |
| 228 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 229 | jz4740_i2s_write(i2s, JZ_REG_AIC_I2S_FMT, format); |
| 230 | |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream, |
| 235 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
| 236 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 237 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 238 | unsigned int sample_size; |
| 239 | uint32_t ctrl; |
| 240 | |
| 241 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 242 | |
| 243 | switch (params_format(params)) { |
| 244 | case SNDRV_PCM_FORMAT_S8: |
| 245 | sample_size = 0; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 246 | break; |
| 247 | case SNDRV_PCM_FORMAT_S16: |
| 248 | sample_size = 1; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 249 | break; |
| 250 | default: |
| 251 | return -EINVAL; |
| 252 | } |
| 253 | |
| 254 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 255 | ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK; |
| 256 | ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET; |
| 257 | if (params_channels(params) == 1) |
| 258 | ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO; |
| 259 | else |
| 260 | ctrl &= ~JZ_AIC_CTRL_MONO_TO_STEREO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 261 | } else { |
| 262 | ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK; |
| 263 | ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
| 267 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 272 | unsigned int freq, int dir) |
| 273 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 274 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 275 | struct clk *parent; |
| 276 | int ret = 0; |
| 277 | |
| 278 | switch (clk_id) { |
| 279 | case JZ4740_I2S_CLKSRC_EXT: |
| 280 | parent = clk_get(NULL, "ext"); |
| 281 | clk_set_parent(i2s->clk_i2s, parent); |
| 282 | break; |
| 283 | case JZ4740_I2S_CLKSRC_PLL: |
| 284 | parent = clk_get(NULL, "pll half"); |
| 285 | clk_set_parent(i2s->clk_i2s, parent); |
| 286 | ret = clk_set_rate(i2s->clk_i2s, freq); |
| 287 | break; |
| 288 | default: |
| 289 | return -EINVAL; |
| 290 | } |
| 291 | clk_put(parent); |
| 292 | |
| 293 | return ret; |
| 294 | } |
| 295 | |
| 296 | static int jz4740_i2s_suspend(struct snd_soc_dai *dai) |
| 297 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 298 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 299 | uint32_t conf; |
| 300 | |
| 301 | if (dai->active) { |
| 302 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 303 | conf &= ~JZ_AIC_CONF_ENABLE; |
| 304 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 305 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 306 | clk_disable_unprepare(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 307 | } |
| 308 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 309 | clk_disable_unprepare(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | static int jz4740_i2s_resume(struct snd_soc_dai *dai) |
| 315 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 316 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 317 | uint32_t conf; |
| 318 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 319 | clk_prepare_enable(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 320 | |
| 321 | if (dai->active) { |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 322 | clk_prepare_enable(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 323 | |
| 324 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 325 | conf |= JZ_AIC_CONF_ENABLE; |
| 326 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 332 | static void jz4740_i2c_init_pcm_config(struct jz4740_i2s *i2s) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 333 | { |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 334 | struct snd_dmaengine_dai_dma_data *dma_data; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 335 | |
| 336 | /* Playback */ |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 337 | dma_data = &i2s->playback_dma_data; |
| 338 | dma_data->maxburst = 16; |
| 339 | dma_data->slave_id = JZ4740_DMA_TYPE_AIC_TRANSMIT; |
| 340 | dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 341 | |
| 342 | /* Capture */ |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 343 | dma_data = &i2s->capture_dma_data; |
| 344 | dma_data->maxburst = 16; |
| 345 | dma_data->slave_id = JZ4740_DMA_TYPE_AIC_RECEIVE; |
| 346 | dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 347 | } |
| 348 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 349 | static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai) |
| 350 | { |
| 351 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
| 352 | uint32_t conf; |
| 353 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 354 | clk_prepare_enable(i2s->clk_aic); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 355 | |
| 356 | jz4740_i2c_init_pcm_config(i2s); |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 357 | snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data, |
| 358 | &i2s->capture_dma_data); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 359 | |
| 360 | conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) | |
| 361 | (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) | |
| 362 | JZ_AIC_CONF_OVERFLOW_PLAY_LAST | |
| 363 | JZ_AIC_CONF_I2S | |
| 364 | JZ_AIC_CONF_INTERNAL_CODEC; |
| 365 | |
| 366 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET); |
| 367 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | static int jz4740_i2s_dai_remove(struct snd_soc_dai *dai) |
| 373 | { |
| 374 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
| 375 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 376 | clk_disable_unprepare(i2s->clk_aic); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 377 | return 0; |
| 378 | } |
| 379 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 380 | static const struct snd_soc_dai_ops jz4740_i2s_dai_ops = { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 381 | .startup = jz4740_i2s_startup, |
| 382 | .shutdown = jz4740_i2s_shutdown, |
| 383 | .trigger = jz4740_i2s_trigger, |
| 384 | .hw_params = jz4740_i2s_hw_params, |
| 385 | .set_fmt = jz4740_i2s_set_fmt, |
| 386 | .set_sysclk = jz4740_i2s_set_sysclk, |
| 387 | }; |
| 388 | |
| 389 | #define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
| 390 | SNDRV_PCM_FMTBIT_S16_LE) |
| 391 | |
| 392 | static struct snd_soc_dai_driver jz4740_i2s_dai = { |
| 393 | .probe = jz4740_i2s_dai_probe, |
| 394 | .remove = jz4740_i2s_dai_remove, |
| 395 | .playback = { |
| 396 | .channels_min = 1, |
| 397 | .channels_max = 2, |
| 398 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 399 | .formats = JZ4740_I2S_FMTS, |
| 400 | }, |
| 401 | .capture = { |
| 402 | .channels_min = 2, |
| 403 | .channels_max = 2, |
| 404 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 405 | .formats = JZ4740_I2S_FMTS, |
| 406 | }, |
| 407 | .symmetric_rates = 1, |
| 408 | .ops = &jz4740_i2s_dai_ops, |
| 409 | .suspend = jz4740_i2s_suspend, |
| 410 | .resume = jz4740_i2s_resume, |
| 411 | }; |
| 412 | |
Kuninori Morimoto | 29cc15c | 2013-03-21 03:32:28 -0700 | [diff] [blame] | 413 | static const struct snd_soc_component_driver jz4740_i2s_component = { |
| 414 | .name = "jz4740-i2s", |
| 415 | }; |
| 416 | |
Bill Pemberton | d6a29e3 | 2012-12-07 09:26:24 -0500 | [diff] [blame] | 417 | static int jz4740_i2s_dev_probe(struct platform_device *pdev) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 418 | { |
| 419 | struct jz4740_i2s *i2s; |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 420 | struct resource *mem; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 421 | int ret; |
| 422 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 423 | i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 424 | if (!i2s) |
| 425 | return -ENOMEM; |
| 426 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 427 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 428 | i2s->base = devm_ioremap_resource(&pdev->dev, mem); |
| 429 | if (IS_ERR(i2s->base)) |
| 430 | return PTR_ERR(i2s->base); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 431 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 432 | i2s->phys_base = mem->start; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 433 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 434 | i2s->clk_aic = devm_clk_get(&pdev->dev, "aic"); |
| 435 | if (IS_ERR(i2s->clk_aic)) |
| 436 | return PTR_ERR(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 437 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 438 | i2s->clk_i2s = devm_clk_get(&pdev->dev, "i2s"); |
| 439 | if (IS_ERR(i2s->clk_i2s)) |
| 440 | return PTR_ERR(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 441 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 442 | platform_set_drvdata(pdev, i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 443 | |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 444 | ret = devm_snd_soc_register_component(&pdev->dev, |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 445 | &jz4740_i2s_component, &jz4740_i2s_dai, 1); |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame^] | 446 | if (ret) |
| 447 | return ret; |
| 448 | |
| 449 | return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, |
| 450 | SND_DMAENGINE_PCM_FLAG_COMPAT); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | static struct platform_driver jz4740_i2s_driver = { |
| 454 | .probe = jz4740_i2s_dev_probe, |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 455 | .driver = { |
| 456 | .name = "jz4740-i2s", |
| 457 | .owner = THIS_MODULE, |
| 458 | }, |
| 459 | }; |
| 460 | |
Axel Lin | c32986e | 2011-11-24 10:13:03 +0800 | [diff] [blame] | 461 | module_platform_driver(jz4740_i2s_driver); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 462 | |
| 463 | MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>"); |
| 464 | MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver"); |
| 465 | MODULE_LICENSE("GPL"); |
| 466 | MODULE_ALIAS("platform:jz4740-i2s"); |