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> |
Zubair Lutfullah Kakakhel | f261057 | 2015-02-03 10:55:59 +0000 | [diff] [blame^] | 17 | #include <linux/of.h> |
| 18 | #include <linux/of_device.h> |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 19 | #include <linux/kernel.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/slab.h> |
| 23 | |
| 24 | #include <linux/clk.h> |
| 25 | #include <linux/delay.h> |
| 26 | |
| 27 | #include <linux/dma-mapping.h> |
| 28 | |
| 29 | #include <sound/core.h> |
| 30 | #include <sound/pcm.h> |
| 31 | #include <sound/pcm_params.h> |
| 32 | #include <sound/soc.h> |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 33 | #include <sound/initval.h> |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 34 | #include <sound/dmaengine_pcm.h> |
| 35 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 36 | #include "jz4740-i2s.h" |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 37 | |
Lars-Peter Clausen | 0aa2a15 | 2014-04-22 22:46:36 +0200 | [diff] [blame] | 38 | #define JZ4740_DMA_TYPE_AIC_TRANSMIT 24 |
| 39 | #define JZ4740_DMA_TYPE_AIC_RECEIVE 25 |
| 40 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 41 | #define JZ_REG_AIC_CONF 0x00 |
| 42 | #define JZ_REG_AIC_CTRL 0x04 |
| 43 | #define JZ_REG_AIC_I2S_FMT 0x10 |
| 44 | #define JZ_REG_AIC_FIFO_STATUS 0x14 |
| 45 | #define JZ_REG_AIC_I2S_STATUS 0x1c |
| 46 | #define JZ_REG_AIC_CLK_DIV 0x30 |
| 47 | #define JZ_REG_AIC_FIFO 0x34 |
| 48 | |
| 49 | #define JZ_AIC_CONF_FIFO_RX_THRESHOLD_MASK (0xf << 12) |
| 50 | #define JZ_AIC_CONF_FIFO_TX_THRESHOLD_MASK (0xf << 8) |
| 51 | #define JZ_AIC_CONF_OVERFLOW_PLAY_LAST BIT(6) |
| 52 | #define JZ_AIC_CONF_INTERNAL_CODEC BIT(5) |
| 53 | #define JZ_AIC_CONF_I2S BIT(4) |
| 54 | #define JZ_AIC_CONF_RESET BIT(3) |
| 55 | #define JZ_AIC_CONF_BIT_CLK_MASTER BIT(2) |
| 56 | #define JZ_AIC_CONF_SYNC_CLK_MASTER BIT(1) |
| 57 | #define JZ_AIC_CONF_ENABLE BIT(0) |
| 58 | |
| 59 | #define JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 12 |
| 60 | #define JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 8 |
| 61 | |
| 62 | #define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19) |
| 63 | #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16) |
| 64 | #define JZ_AIC_CTRL_ENABLE_RX_DMA BIT(15) |
| 65 | #define JZ_AIC_CTRL_ENABLE_TX_DMA BIT(14) |
| 66 | #define JZ_AIC_CTRL_MONO_TO_STEREO BIT(11) |
| 67 | #define JZ_AIC_CTRL_SWITCH_ENDIANNESS BIT(10) |
| 68 | #define JZ_AIC_CTRL_SIGNED_TO_UNSIGNED BIT(9) |
| 69 | #define JZ_AIC_CTRL_FLUSH BIT(8) |
| 70 | #define JZ_AIC_CTRL_ENABLE_ROR_INT BIT(6) |
| 71 | #define JZ_AIC_CTRL_ENABLE_TUR_INT BIT(5) |
| 72 | #define JZ_AIC_CTRL_ENABLE_RFS_INT BIT(4) |
| 73 | #define JZ_AIC_CTRL_ENABLE_TFS_INT BIT(3) |
| 74 | #define JZ_AIC_CTRL_ENABLE_LOOPBACK BIT(2) |
| 75 | #define JZ_AIC_CTRL_ENABLE_PLAYBACK BIT(1) |
| 76 | #define JZ_AIC_CTRL_ENABLE_CAPTURE BIT(0) |
| 77 | |
| 78 | #define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET 19 |
| 79 | #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET 16 |
| 80 | |
| 81 | #define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12) |
| 82 | #define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4) |
| 83 | #define JZ_AIC_I2S_FMT_MSB BIT(0) |
| 84 | |
| 85 | #define JZ_AIC_I2S_STATUS_BUSY BIT(2) |
| 86 | |
| 87 | #define JZ_AIC_CLK_DIV_MASK 0xf |
Zubair Lutfullah Kakakhel | 26b0aad | 2015-02-03 10:55:57 +0000 | [diff] [blame] | 88 | #define I2SDIV_DV_SHIFT 8 |
| 89 | #define I2SDIV_DV_MASK (0xf << I2SDIV_DV_SHIFT) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 90 | |
| 91 | struct jz4740_i2s { |
| 92 | struct resource *mem; |
| 93 | void __iomem *base; |
| 94 | dma_addr_t phys_base; |
| 95 | |
| 96 | struct clk *clk_aic; |
| 97 | struct clk *clk_i2s; |
| 98 | |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 99 | struct snd_dmaengine_dai_dma_data playback_dma_data; |
| 100 | struct snd_dmaengine_dai_dma_data capture_dma_data; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 101 | }; |
| 102 | |
| 103 | static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s, |
| 104 | unsigned int reg) |
| 105 | { |
| 106 | return readl(i2s->base + reg); |
| 107 | } |
| 108 | |
| 109 | static inline void jz4740_i2s_write(const struct jz4740_i2s *i2s, |
| 110 | unsigned int reg, uint32_t value) |
| 111 | { |
| 112 | writel(value, i2s->base + reg); |
| 113 | } |
| 114 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 115 | static int jz4740_i2s_startup(struct snd_pcm_substream *substream, |
| 116 | struct snd_soc_dai *dai) |
| 117 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 118 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 119 | uint32_t conf, ctrl; |
| 120 | |
| 121 | if (dai->active) |
| 122 | return 0; |
| 123 | |
| 124 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 125 | ctrl |= JZ_AIC_CTRL_FLUSH; |
| 126 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
| 127 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 128 | clk_prepare_enable(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 129 | |
| 130 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 131 | conf |= JZ_AIC_CONF_ENABLE; |
| 132 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 133 | |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static void jz4740_i2s_shutdown(struct snd_pcm_substream *substream, |
| 138 | struct snd_soc_dai *dai) |
| 139 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 140 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 141 | uint32_t conf; |
| 142 | |
Lars-Peter Clausen | 005967a | 2011-04-30 22:28:20 +0200 | [diff] [blame] | 143 | if (dai->active) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 144 | return; |
| 145 | |
| 146 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 147 | conf &= ~JZ_AIC_CONF_ENABLE; |
| 148 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 149 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 150 | clk_disable_unprepare(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | static int jz4740_i2s_trigger(struct snd_pcm_substream *substream, int cmd, |
| 154 | struct snd_soc_dai *dai) |
| 155 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 156 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 157 | |
| 158 | uint32_t ctrl; |
| 159 | uint32_t mask; |
| 160 | |
| 161 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 162 | mask = JZ_AIC_CTRL_ENABLE_PLAYBACK | JZ_AIC_CTRL_ENABLE_TX_DMA; |
| 163 | else |
| 164 | mask = JZ_AIC_CTRL_ENABLE_CAPTURE | JZ_AIC_CTRL_ENABLE_RX_DMA; |
| 165 | |
| 166 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 167 | |
| 168 | switch (cmd) { |
| 169 | case SNDRV_PCM_TRIGGER_START: |
| 170 | case SNDRV_PCM_TRIGGER_RESUME: |
| 171 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 172 | ctrl |= mask; |
| 173 | break; |
| 174 | case SNDRV_PCM_TRIGGER_STOP: |
| 175 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 176 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 177 | ctrl &= ~mask; |
| 178 | break; |
| 179 | default: |
| 180 | return -EINVAL; |
| 181 | } |
| 182 | |
| 183 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | static int jz4740_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 189 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 190 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 191 | |
| 192 | uint32_t format = 0; |
| 193 | uint32_t conf; |
| 194 | |
| 195 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 196 | |
| 197 | conf &= ~(JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER); |
| 198 | |
| 199 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 200 | case SND_SOC_DAIFMT_CBS_CFS: |
| 201 | conf |= JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER; |
| 202 | format |= JZ_AIC_I2S_FMT_ENABLE_SYS_CLK; |
| 203 | break; |
| 204 | case SND_SOC_DAIFMT_CBM_CFS: |
| 205 | conf |= JZ_AIC_CONF_SYNC_CLK_MASTER; |
| 206 | break; |
| 207 | case SND_SOC_DAIFMT_CBS_CFM: |
| 208 | conf |= JZ_AIC_CONF_BIT_CLK_MASTER; |
| 209 | break; |
| 210 | case SND_SOC_DAIFMT_CBM_CFM: |
| 211 | break; |
| 212 | default: |
| 213 | return -EINVAL; |
| 214 | } |
| 215 | |
| 216 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 217 | case SND_SOC_DAIFMT_MSB: |
| 218 | format |= JZ_AIC_I2S_FMT_MSB; |
| 219 | break; |
| 220 | case SND_SOC_DAIFMT_I2S: |
| 221 | break; |
| 222 | default: |
| 223 | return -EINVAL; |
| 224 | } |
| 225 | |
| 226 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 227 | case SND_SOC_DAIFMT_NB_NF: |
| 228 | break; |
| 229 | default: |
| 230 | return -EINVAL; |
| 231 | } |
| 232 | |
| 233 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 234 | jz4740_i2s_write(i2s, JZ_REG_AIC_I2S_FMT, format); |
| 235 | |
| 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream, |
| 240 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
| 241 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 242 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 243 | unsigned int sample_size; |
Zubair Lutfullah Kakakhel | 26b0aad | 2015-02-03 10:55:57 +0000 | [diff] [blame] | 244 | uint32_t ctrl, div_reg; |
| 245 | int div; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 246 | |
| 247 | ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); |
| 248 | |
Zubair Lutfullah Kakakhel | 26b0aad | 2015-02-03 10:55:57 +0000 | [diff] [blame] | 249 | div_reg = jz4740_i2s_read(i2s, JZ_REG_AIC_CLK_DIV); |
| 250 | div = clk_get_rate(i2s->clk_i2s) / (64 * params_rate(params)); |
| 251 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 252 | switch (params_format(params)) { |
| 253 | case SNDRV_PCM_FORMAT_S8: |
| 254 | sample_size = 0; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 255 | break; |
| 256 | case SNDRV_PCM_FORMAT_S16: |
| 257 | sample_size = 1; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 258 | break; |
| 259 | default: |
| 260 | return -EINVAL; |
| 261 | } |
| 262 | |
| 263 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 264 | ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK; |
| 265 | ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET; |
| 266 | if (params_channels(params) == 1) |
| 267 | ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO; |
| 268 | else |
| 269 | ctrl &= ~JZ_AIC_CTRL_MONO_TO_STEREO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 270 | } else { |
| 271 | ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK; |
| 272 | ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 273 | } |
| 274 | |
Zubair Lutfullah Kakakhel | 26b0aad | 2015-02-03 10:55:57 +0000 | [diff] [blame] | 275 | div_reg &= ~I2SDIV_DV_MASK; |
| 276 | div_reg |= (div - 1) << I2SDIV_DV_SHIFT; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 277 | jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); |
Zubair Lutfullah Kakakhel | 26b0aad | 2015-02-03 10:55:57 +0000 | [diff] [blame] | 278 | jz4740_i2s_write(i2s, JZ_REG_AIC_CLK_DIV, div_reg); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 279 | |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 284 | unsigned int freq, int dir) |
| 285 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 286 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 287 | struct clk *parent; |
| 288 | int ret = 0; |
| 289 | |
| 290 | switch (clk_id) { |
| 291 | case JZ4740_I2S_CLKSRC_EXT: |
| 292 | parent = clk_get(NULL, "ext"); |
| 293 | clk_set_parent(i2s->clk_i2s, parent); |
| 294 | break; |
| 295 | case JZ4740_I2S_CLKSRC_PLL: |
| 296 | parent = clk_get(NULL, "pll half"); |
| 297 | clk_set_parent(i2s->clk_i2s, parent); |
| 298 | ret = clk_set_rate(i2s->clk_i2s, freq); |
| 299 | break; |
| 300 | default: |
| 301 | return -EINVAL; |
| 302 | } |
| 303 | clk_put(parent); |
| 304 | |
| 305 | return ret; |
| 306 | } |
| 307 | |
| 308 | static int jz4740_i2s_suspend(struct snd_soc_dai *dai) |
| 309 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 310 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 311 | uint32_t conf; |
| 312 | |
| 313 | if (dai->active) { |
| 314 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 315 | conf &= ~JZ_AIC_CONF_ENABLE; |
| 316 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 317 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 318 | clk_disable_unprepare(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 319 | } |
| 320 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 321 | clk_disable_unprepare(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 322 | |
| 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | static int jz4740_i2s_resume(struct snd_soc_dai *dai) |
| 327 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 328 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 329 | uint32_t conf; |
| 330 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 331 | clk_prepare_enable(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 332 | |
| 333 | if (dai->active) { |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 334 | clk_prepare_enable(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 335 | |
| 336 | conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF); |
| 337 | conf |= JZ_AIC_CONF_ENABLE; |
| 338 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 339 | } |
| 340 | |
| 341 | return 0; |
| 342 | } |
| 343 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 344 | static void jz4740_i2c_init_pcm_config(struct jz4740_i2s *i2s) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 345 | { |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 346 | struct snd_dmaengine_dai_dma_data *dma_data; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 347 | |
| 348 | /* Playback */ |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 349 | dma_data = &i2s->playback_dma_data; |
| 350 | dma_data->maxburst = 16; |
| 351 | dma_data->slave_id = JZ4740_DMA_TYPE_AIC_TRANSMIT; |
| 352 | dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 353 | |
| 354 | /* Capture */ |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 355 | dma_data = &i2s->capture_dma_data; |
| 356 | dma_data->maxburst = 16; |
| 357 | dma_data->slave_id = JZ4740_DMA_TYPE_AIC_RECEIVE; |
| 358 | dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 359 | } |
| 360 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 361 | static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai) |
| 362 | { |
| 363 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
| 364 | uint32_t conf; |
| 365 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 366 | clk_prepare_enable(i2s->clk_aic); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 367 | |
| 368 | jz4740_i2c_init_pcm_config(i2s); |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 369 | snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data, |
| 370 | &i2s->capture_dma_data); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 371 | |
| 372 | conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) | |
| 373 | (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) | |
| 374 | JZ_AIC_CONF_OVERFLOW_PLAY_LAST | |
| 375 | JZ_AIC_CONF_I2S | |
| 376 | JZ_AIC_CONF_INTERNAL_CODEC; |
| 377 | |
| 378 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET); |
| 379 | jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static int jz4740_i2s_dai_remove(struct snd_soc_dai *dai) |
| 385 | { |
| 386 | struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai); |
| 387 | |
Lars-Peter Clausen | 010187f | 2013-05-12 20:07:39 +0200 | [diff] [blame] | 388 | clk_disable_unprepare(i2s->clk_aic); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 389 | return 0; |
| 390 | } |
| 391 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 392 | static const struct snd_soc_dai_ops jz4740_i2s_dai_ops = { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 393 | .startup = jz4740_i2s_startup, |
| 394 | .shutdown = jz4740_i2s_shutdown, |
| 395 | .trigger = jz4740_i2s_trigger, |
| 396 | .hw_params = jz4740_i2s_hw_params, |
| 397 | .set_fmt = jz4740_i2s_set_fmt, |
| 398 | .set_sysclk = jz4740_i2s_set_sysclk, |
| 399 | }; |
| 400 | |
| 401 | #define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
| 402 | SNDRV_PCM_FMTBIT_S16_LE) |
| 403 | |
| 404 | static struct snd_soc_dai_driver jz4740_i2s_dai = { |
| 405 | .probe = jz4740_i2s_dai_probe, |
| 406 | .remove = jz4740_i2s_dai_remove, |
| 407 | .playback = { |
| 408 | .channels_min = 1, |
| 409 | .channels_max = 2, |
| 410 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 411 | .formats = JZ4740_I2S_FMTS, |
| 412 | }, |
| 413 | .capture = { |
| 414 | .channels_min = 2, |
| 415 | .channels_max = 2, |
| 416 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 417 | .formats = JZ4740_I2S_FMTS, |
| 418 | }, |
| 419 | .symmetric_rates = 1, |
| 420 | .ops = &jz4740_i2s_dai_ops, |
| 421 | .suspend = jz4740_i2s_suspend, |
| 422 | .resume = jz4740_i2s_resume, |
| 423 | }; |
| 424 | |
Kuninori Morimoto | 29cc15c | 2013-03-21 03:32:28 -0700 | [diff] [blame] | 425 | static const struct snd_soc_component_driver jz4740_i2s_component = { |
| 426 | .name = "jz4740-i2s", |
| 427 | }; |
| 428 | |
Zubair Lutfullah Kakakhel | f261057 | 2015-02-03 10:55:59 +0000 | [diff] [blame^] | 429 | #ifdef CONFIG_OF |
| 430 | static const struct of_device_id jz4740_of_matches[] = { |
| 431 | { .compatible = "ingenic,jz4740-i2s" }, |
| 432 | { /* sentinel */ } |
| 433 | }; |
| 434 | #endif |
| 435 | |
Bill Pemberton | d6a29e3 | 2012-12-07 09:26:24 -0500 | [diff] [blame] | 436 | static int jz4740_i2s_dev_probe(struct platform_device *pdev) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 437 | { |
| 438 | struct jz4740_i2s *i2s; |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 439 | struct resource *mem; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 440 | int ret; |
| 441 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 442 | i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 443 | if (!i2s) |
| 444 | return -ENOMEM; |
| 445 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 446 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 447 | i2s->base = devm_ioremap_resource(&pdev->dev, mem); |
| 448 | if (IS_ERR(i2s->base)) |
| 449 | return PTR_ERR(i2s->base); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 450 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 451 | i2s->phys_base = mem->start; |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 452 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 453 | i2s->clk_aic = devm_clk_get(&pdev->dev, "aic"); |
| 454 | if (IS_ERR(i2s->clk_aic)) |
| 455 | return PTR_ERR(i2s->clk_aic); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 456 | |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 457 | i2s->clk_i2s = devm_clk_get(&pdev->dev, "i2s"); |
| 458 | if (IS_ERR(i2s->clk_i2s)) |
| 459 | return PTR_ERR(i2s->clk_i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 460 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 461 | platform_set_drvdata(pdev, i2s); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 462 | |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 463 | ret = devm_snd_soc_register_component(&pdev->dev, |
Lars-Peter Clausen | b84c9ce | 2013-12-03 18:53:02 +0100 | [diff] [blame] | 464 | &jz4740_i2s_component, &jz4740_i2s_dai, 1); |
Lars-Peter Clausen | 0406a40 | 2013-12-03 18:53:03 +0100 | [diff] [blame] | 465 | if (ret) |
| 466 | return ret; |
| 467 | |
| 468 | return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, |
| 469 | SND_DMAENGINE_PCM_FLAG_COMPAT); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | static struct platform_driver jz4740_i2s_driver = { |
| 473 | .probe = jz4740_i2s_dev_probe, |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 474 | .driver = { |
| 475 | .name = "jz4740-i2s", |
Zubair Lutfullah Kakakhel | f261057 | 2015-02-03 10:55:59 +0000 | [diff] [blame^] | 476 | .of_match_table = of_match_ptr(jz4740_of_matches) |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 477 | }, |
| 478 | }; |
| 479 | |
Axel Lin | c32986e | 2011-11-24 10:13:03 +0800 | [diff] [blame] | 480 | module_platform_driver(jz4740_i2s_driver); |
Lars-Peter Clausen | 11bd3dd | 2010-06-19 16:50:37 +0200 | [diff] [blame] | 481 | |
| 482 | MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>"); |
| 483 | MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver"); |
| 484 | MODULE_LICENSE("GPL"); |
| 485 | MODULE_ALIAS("platform:jz4740-i2s"); |