Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 1 | /* |
| 2 | * pxa2xx-i2s.c -- ALSA Soc Audio Layer |
| 3 | * |
| 4 | * Copyright 2005 Wolfson Microelectronics PLC. |
| 5 | * Author: Liam Girdwood |
Liam Girdwood | d331124 | 2008-10-12 13:17:36 +0100 | [diff] [blame] | 6 | * lrg@slimlogic.co.uk |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 12 | */ |
| 13 | |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/device.h> |
| 17 | #include <linux/delay.h> |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 18 | #include <linux/clk.h> |
Dmitry Baryshkov | 6e5ea70 | 2008-08-31 00:45:02 +0400 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 20 | #include <sound/core.h> |
| 21 | #include <sound/pcm.h> |
| 22 | #include <sound/initval.h> |
| 23 | #include <sound/soc.h> |
Dmitry Baryshkov | a6d7731 | 2008-09-10 05:01:20 +0400 | [diff] [blame] | 24 | #include <sound/pxa2xx-lib.h> |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 25 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 26 | #include <mach/hardware.h> |
| 27 | #include <mach/pxa-regs.h> |
| 28 | #include <mach/pxa2xx-gpio.h> |
| 29 | #include <mach/audio.h> |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 30 | |
| 31 | #include "pxa2xx-pcm.h" |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 32 | #include "pxa2xx-i2s.h" |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 33 | |
Dmitry Baryshkov | a6d7731 | 2008-09-10 05:01:20 +0400 | [diff] [blame] | 34 | struct pxa2xx_gpio { |
| 35 | u32 sys; |
| 36 | u32 rx; |
| 37 | u32 tx; |
| 38 | u32 clk; |
| 39 | u32 frm; |
| 40 | }; |
| 41 | |
Eric Miao | 52358ba | 2008-09-08 15:37:50 +0800 | [diff] [blame] | 42 | /* |
| 43 | * I2S Controller Register and Bit Definitions |
| 44 | */ |
| 45 | #define SACR0 __REG(0x40400000) /* Global Control Register */ |
| 46 | #define SACR1 __REG(0x40400004) /* Serial Audio I 2 S/MSB-Justified Control Register */ |
| 47 | #define SASR0 __REG(0x4040000C) /* Serial Audio I 2 S/MSB-Justified Interface and FIFO Status Register */ |
| 48 | #define SAIMR __REG(0x40400014) /* Serial Audio Interrupt Mask Register */ |
| 49 | #define SAICR __REG(0x40400018) /* Serial Audio Interrupt Clear Register */ |
| 50 | #define SADIV __REG(0x40400060) /* Audio Clock Divider Register. */ |
| 51 | #define SADR __REG(0x40400080) /* Serial Audio Data Register (TX and RX FIFO access Register). */ |
| 52 | |
| 53 | #define SACR0_RFTH(x) ((x) << 12) /* Rx FIFO Interrupt or DMA Trigger Threshold */ |
| 54 | #define SACR0_TFTH(x) ((x) << 8) /* Tx FIFO Interrupt or DMA Trigger Threshold */ |
| 55 | #define SACR0_STRF (1 << 5) /* FIFO Select for EFWR Special Function */ |
| 56 | #define SACR0_EFWR (1 << 4) /* Enable EFWR Function */ |
| 57 | #define SACR0_RST (1 << 3) /* FIFO, i2s Register Reset */ |
| 58 | #define SACR0_BCKD (1 << 2) /* Bit Clock Direction */ |
| 59 | #define SACR0_ENB (1 << 0) /* Enable I2S Link */ |
| 60 | #define SACR1_ENLBF (1 << 5) /* Enable Loopback */ |
| 61 | #define SACR1_DRPL (1 << 4) /* Disable Replaying Function */ |
| 62 | #define SACR1_DREC (1 << 3) /* Disable Recording Function */ |
| 63 | #define SACR1_AMSL (1 << 0) /* Specify Alternate Mode */ |
| 64 | |
| 65 | #define SASR0_I2SOFF (1 << 7) /* Controller Status */ |
| 66 | #define SASR0_ROR (1 << 6) /* Rx FIFO Overrun */ |
| 67 | #define SASR0_TUR (1 << 5) /* Tx FIFO Underrun */ |
| 68 | #define SASR0_RFS (1 << 4) /* Rx FIFO Service Request */ |
| 69 | #define SASR0_TFS (1 << 3) /* Tx FIFO Service Request */ |
| 70 | #define SASR0_BSY (1 << 2) /* I2S Busy */ |
| 71 | #define SASR0_RNE (1 << 1) /* Rx FIFO Not Empty */ |
| 72 | #define SASR0_TNF (1 << 0) /* Tx FIFO Not Empty */ |
| 73 | |
| 74 | #define SAICR_ROR (1 << 6) /* Clear Rx FIFO Overrun Interrupt */ |
| 75 | #define SAICR_TUR (1 << 5) /* Clear Tx FIFO Underrun Interrupt */ |
| 76 | |
| 77 | #define SAIMR_ROR (1 << 6) /* Enable Rx FIFO Overrun Condition Interrupt */ |
| 78 | #define SAIMR_TUR (1 << 5) /* Enable Tx FIFO Underrun Condition Interrupt */ |
| 79 | #define SAIMR_RFS (1 << 4) /* Enable Rx FIFO Service Interrupt */ |
| 80 | #define SAIMR_TFS (1 << 3) /* Enable Tx FIFO Service Interrupt */ |
Dmitry Baryshkov | a6d7731 | 2008-09-10 05:01:20 +0400 | [diff] [blame] | 81 | |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 82 | struct pxa_i2s_port { |
| 83 | u32 sadiv; |
| 84 | u32 sacr0; |
| 85 | u32 sacr1; |
| 86 | u32 saimr; |
| 87 | int master; |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 88 | u32 fmt; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 89 | }; |
| 90 | static struct pxa_i2s_port pxa_i2s; |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 91 | static struct clk *clk_i2s; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 92 | |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 93 | static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = { |
| 94 | .name = "I2S PCM Stereo out", |
| 95 | .dev_addr = __PREG(SADR), |
Eric Miao | 87f3dd7 | 2008-09-08 15:26:43 +0800 | [diff] [blame] | 96 | .drcmr = &DRCMR(3), |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 97 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | |
| 98 | DCMD_BURST32 | DCMD_WIDTH4, |
| 99 | }; |
| 100 | |
| 101 | static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_in = { |
| 102 | .name = "I2S PCM Stereo in", |
| 103 | .dev_addr = __PREG(SADR), |
Eric Miao | 87f3dd7 | 2008-09-08 15:26:43 +0800 | [diff] [blame] | 104 | .drcmr = &DRCMR(2), |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 105 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | |
| 106 | DCMD_BURST32 | DCMD_WIDTH4, |
| 107 | }; |
| 108 | |
| 109 | static struct pxa2xx_gpio gpio_bus[] = { |
| 110 | { /* I2S SoC Slave */ |
| 111 | .rx = GPIO29_SDATA_IN_I2S_MD, |
| 112 | .tx = GPIO30_SDATA_OUT_I2S_MD, |
| 113 | .clk = GPIO28_BITCLK_IN_I2S_MD, |
| 114 | .frm = GPIO31_SYNC_I2S_MD, |
| 115 | }, |
| 116 | { /* I2S SoC Master */ |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 117 | .rx = GPIO29_SDATA_IN_I2S_MD, |
| 118 | .tx = GPIO30_SDATA_OUT_I2S_MD, |
| 119 | .clk = GPIO28_BITCLK_OUT_I2S_MD, |
| 120 | .frm = GPIO31_SYNC_I2S_MD, |
| 121 | }, |
| 122 | }; |
| 123 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 124 | static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream, |
| 125 | struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 126 | { |
| 127 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Liam Girdwood | 917f93a | 2008-07-07 16:08:11 +0100 | [diff] [blame] | 128 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 129 | |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 130 | if (IS_ERR(clk_i2s)) |
| 131 | return PTR_ERR(clk_i2s); |
| 132 | |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 133 | if (!cpu_dai->active) { |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 134 | SACR0 |= SACR0_RST; |
| 135 | SACR0 = 0; |
| 136 | } |
| 137 | |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | /* wait for I2S controller to be ready */ |
| 142 | static int pxa_i2s_wait(void) |
| 143 | { |
| 144 | int i; |
| 145 | |
| 146 | /* flush the Rx FIFO */ |
| 147 | for(i = 0; i < 16; i++) |
| 148 | SADR; |
| 149 | return 0; |
| 150 | } |
| 151 | |
Liam Girdwood | 917f93a | 2008-07-07 16:08:11 +0100 | [diff] [blame] | 152 | static int pxa2xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 153 | unsigned int fmt) |
| 154 | { |
| 155 | /* interface format */ |
| 156 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 157 | case SND_SOC_DAIFMT_I2S: |
| 158 | pxa_i2s.fmt = 0; |
| 159 | break; |
| 160 | case SND_SOC_DAIFMT_LEFT_J: |
| 161 | pxa_i2s.fmt = SACR1_AMSL; |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 166 | case SND_SOC_DAIFMT_CBS_CFS: |
| 167 | pxa_i2s.master = 1; |
| 168 | break; |
| 169 | case SND_SOC_DAIFMT_CBM_CFS: |
| 170 | pxa_i2s.master = 0; |
| 171 | break; |
| 172 | default: |
| 173 | break; |
| 174 | } |
| 175 | return 0; |
| 176 | } |
| 177 | |
Liam Girdwood | 917f93a | 2008-07-07 16:08:11 +0100 | [diff] [blame] | 178 | static int pxa2xx_i2s_set_dai_sysclk(struct snd_soc_dai *cpu_dai, |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 179 | int clk_id, unsigned int freq, int dir) |
| 180 | { |
| 181 | if (clk_id != PXA2XX_I2S_SYSCLK) |
| 182 | return -ENODEV; |
| 183 | |
| 184 | if (pxa_i2s.master && dir == SND_SOC_CLOCK_OUT) |
| 185 | pxa_gpio_mode(gpio_bus[pxa_i2s.master].sys); |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 190 | static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 191 | struct snd_pcm_hw_params *params, |
| 192 | struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 193 | { |
| 194 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Liam Girdwood | 917f93a | 2008-07-07 16:08:11 +0100 | [diff] [blame] | 195 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 196 | |
| 197 | pxa_gpio_mode(gpio_bus[pxa_i2s.master].rx); |
| 198 | pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx); |
| 199 | pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm); |
| 200 | pxa_gpio_mode(gpio_bus[pxa_i2s.master].clk); |
Dmitry Baryshkov | 6e5ea70 | 2008-08-31 00:45:02 +0400 | [diff] [blame] | 201 | BUG_ON(IS_ERR(clk_i2s)); |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 202 | clk_enable(clk_i2s); |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 203 | pxa_i2s_wait(); |
| 204 | |
| 205 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 206 | cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_out; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 207 | else |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 208 | cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_in; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 209 | |
| 210 | /* is port used by another stream */ |
| 211 | if (!(SACR0 & SACR0_ENB)) { |
| 212 | |
| 213 | SACR0 = 0; |
| 214 | SACR1 = 0; |
| 215 | if (pxa_i2s.master) |
| 216 | SACR0 |= SACR0_BCKD; |
| 217 | |
| 218 | SACR0 |= SACR0_RFTH(14) | SACR0_TFTH(1); |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 219 | SACR1 |= pxa_i2s.fmt; |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 220 | } |
| 221 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 222 | SAIMR |= SAIMR_TFS; |
| 223 | else |
| 224 | SAIMR |= SAIMR_RFS; |
| 225 | |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 226 | switch (params_rate(params)) { |
| 227 | case 8000: |
| 228 | SADIV = 0x48; |
| 229 | break; |
| 230 | case 11025: |
| 231 | SADIV = 0x34; |
| 232 | break; |
| 233 | case 16000: |
| 234 | SADIV = 0x24; |
| 235 | break; |
| 236 | case 22050: |
| 237 | SADIV = 0x1a; |
| 238 | break; |
| 239 | case 44100: |
| 240 | SADIV = 0xd; |
| 241 | break; |
| 242 | case 48000: |
| 243 | SADIV = 0xc; |
| 244 | break; |
| 245 | case 96000: /* not in manual and possibly slightly inaccurate */ |
| 246 | SADIV = 0x6; |
| 247 | break; |
| 248 | } |
| 249 | |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 250 | return 0; |
| 251 | } |
| 252 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 253 | static int pxa2xx_i2s_trigger(struct snd_pcm_substream *substream, int cmd, |
| 254 | struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 255 | { |
| 256 | int ret = 0; |
| 257 | |
| 258 | switch (cmd) { |
| 259 | case SNDRV_PCM_TRIGGER_START: |
| 260 | SACR0 |= SACR0_ENB; |
| 261 | break; |
| 262 | case SNDRV_PCM_TRIGGER_RESUME: |
| 263 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 264 | case SNDRV_PCM_TRIGGER_STOP: |
| 265 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 266 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 267 | break; |
| 268 | default: |
| 269 | ret = -EINVAL; |
| 270 | } |
| 271 | |
| 272 | return ret; |
| 273 | } |
| 274 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 275 | static void pxa2xx_i2s_shutdown(struct snd_pcm_substream *substream, |
| 276 | struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 277 | { |
| 278 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 279 | SACR1 |= SACR1_DRPL; |
| 280 | SAIMR &= ~SAIMR_TFS; |
| 281 | } else { |
| 282 | SACR1 |= SACR1_DREC; |
| 283 | SAIMR &= ~SAIMR_RFS; |
| 284 | } |
| 285 | |
| 286 | if (SACR1 & (SACR1_DREC | SACR1_DRPL)) { |
| 287 | SACR0 &= ~SACR0_ENB; |
| 288 | pxa_i2s_wait(); |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 289 | clk_disable(clk_i2s); |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 290 | } |
eric miao | 5a2cc50 | 2008-05-26 03:28:09 +0100 | [diff] [blame] | 291 | |
| 292 | clk_put(clk_i2s); |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | #ifdef CONFIG_PM |
Mark Brown | dc7d7b8 | 2008-12-03 18:21:52 +0000 | [diff] [blame^] | 296 | static int pxa2xx_i2s_suspend(struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 297 | { |
| 298 | if (!dai->active) |
| 299 | return 0; |
| 300 | |
| 301 | /* store registers */ |
| 302 | pxa_i2s.sacr0 = SACR0; |
| 303 | pxa_i2s.sacr1 = SACR1; |
| 304 | pxa_i2s.saimr = SAIMR; |
| 305 | pxa_i2s.sadiv = SADIV; |
| 306 | |
| 307 | /* deactivate link */ |
| 308 | SACR0 &= ~SACR0_ENB; |
| 309 | pxa_i2s_wait(); |
| 310 | return 0; |
| 311 | } |
| 312 | |
Mark Brown | dc7d7b8 | 2008-12-03 18:21:52 +0000 | [diff] [blame^] | 313 | static int pxa2xx_i2s_resume(struct snd_soc_dai *dai) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 314 | { |
| 315 | if (!dai->active) |
| 316 | return 0; |
| 317 | |
| 318 | pxa_i2s_wait(); |
| 319 | |
| 320 | SACR0 = pxa_i2s.sacr0 &= ~SACR0_ENB; |
| 321 | SACR1 = pxa_i2s.sacr1; |
| 322 | SAIMR = pxa_i2s.saimr; |
| 323 | SADIV = pxa_i2s.sadiv; |
| 324 | SACR0 |= SACR0_ENB; |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | #else |
| 330 | #define pxa2xx_i2s_suspend NULL |
| 331 | #define pxa2xx_i2s_resume NULL |
| 332 | #endif |
| 333 | |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 334 | #define PXA2XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| 335 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ |
| 336 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 337 | |
Liam Girdwood | 917f93a | 2008-07-07 16:08:11 +0100 | [diff] [blame] | 338 | struct snd_soc_dai pxa_i2s_dai = { |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 339 | .name = "pxa2xx-i2s", |
| 340 | .id = 0, |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 341 | .suspend = pxa2xx_i2s_suspend, |
| 342 | .resume = pxa2xx_i2s_resume, |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 343 | .playback = { |
| 344 | .channels_min = 2, |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 345 | .channels_max = 2, |
| 346 | .rates = PXA2XX_I2S_RATES, |
| 347 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 348 | .capture = { |
| 349 | .channels_min = 2, |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 350 | .channels_max = 2, |
| 351 | .rates = PXA2XX_I2S_RATES, |
| 352 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 353 | .ops = { |
| 354 | .startup = pxa2xx_i2s_startup, |
| 355 | .shutdown = pxa2xx_i2s_shutdown, |
| 356 | .trigger = pxa2xx_i2s_trigger, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 357 | .hw_params = pxa2xx_i2s_hw_params, |
Philipp Zabel | eaff2ae | 2007-02-02 17:20:40 +0100 | [diff] [blame] | 358 | .set_fmt = pxa2xx_i2s_set_dai_fmt, |
| 359 | .set_sysclk = pxa2xx_i2s_set_dai_sysclk, |
| 360 | }, |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 361 | }; |
| 362 | |
| 363 | EXPORT_SYMBOL_GPL(pxa_i2s_dai); |
| 364 | |
Dmitry Baryshkov | 6e5ea70 | 2008-08-31 00:45:02 +0400 | [diff] [blame] | 365 | static int pxa2xx_i2s_probe(struct platform_device *dev) |
| 366 | { |
| 367 | clk_i2s = clk_get(&dev->dev, "I2SCLK"); |
| 368 | return IS_ERR(clk_i2s) ? PTR_ERR(clk_i2s) : 0; |
| 369 | } |
| 370 | |
| 371 | static int __devexit pxa2xx_i2s_remove(struct platform_device *dev) |
| 372 | { |
| 373 | clk_put(clk_i2s); |
| 374 | clk_i2s = ERR_PTR(-ENOENT); |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | static struct platform_driver pxa2xx_i2s_driver = { |
| 379 | .probe = pxa2xx_i2s_probe, |
| 380 | .remove = __devexit_p(pxa2xx_i2s_remove), |
| 381 | |
| 382 | .driver = { |
| 383 | .name = "pxa2xx-i2s", |
| 384 | .owner = THIS_MODULE, |
| 385 | }, |
| 386 | }; |
| 387 | |
| 388 | static int __init pxa2xx_i2s_init(void) |
| 389 | { |
Dmitry Baryshkov | 081b355 | 2008-09-10 05:01:19 +0400 | [diff] [blame] | 390 | if (cpu_is_pxa27x()) |
| 391 | gpio_bus[1].sys = GPIO113_I2S_SYSCLK_MD; |
| 392 | else |
| 393 | gpio_bus[1].sys = GPIO32_SYSCLK_I2S_MD; |
| 394 | |
Dmitry Baryshkov | 6e5ea70 | 2008-08-31 00:45:02 +0400 | [diff] [blame] | 395 | clk_i2s = ERR_PTR(-ENOENT); |
| 396 | return platform_driver_register(&pxa2xx_i2s_driver); |
| 397 | } |
| 398 | |
| 399 | static void __exit pxa2xx_i2s_exit(void) |
| 400 | { |
| 401 | platform_driver_unregister(&pxa2xx_i2s_driver); |
| 402 | } |
| 403 | |
| 404 | module_init(pxa2xx_i2s_init); |
| 405 | module_exit(pxa2xx_i2s_exit); |
| 406 | |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 407 | /* Module information */ |
Liam Girdwood | d331124 | 2008-10-12 13:17:36 +0100 | [diff] [blame] | 408 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
Liam Girdwood | 3e7cc3d | 2006-10-12 14:28:10 +0200 | [diff] [blame] | 409 | MODULE_DESCRIPTION("pxa2xx I2S SoC Interface"); |
| 410 | MODULE_LICENSE("GPL"); |