Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 1 | /* |
| 2 | * imx-pcm-fiq.c -- ALSA Soc Audio Layer |
| 3 | * |
| 4 | * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de> |
| 5 | * |
| 6 | * This code is based on code copyrighted by Freescale, |
| 7 | * Liam Girdwood, Javier Martin and probably others. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License as published by the |
| 11 | * Free Software Foundation; either version 2 of the License, or (at your |
| 12 | * option) any later version. |
| 13 | */ |
| 14 | #include <linux/clk.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/device.h> |
| 17 | #include <linux/dma-mapping.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/platform_device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 22 | #include <linux/slab.h> |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 23 | |
| 24 | #include <sound/core.h> |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 25 | #include <sound/dmaengine_pcm.h> |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 26 | #include <sound/initval.h> |
| 27 | #include <sound/pcm.h> |
| 28 | #include <sound/pcm_params.h> |
| 29 | #include <sound/soc.h> |
| 30 | |
| 31 | #include <asm/fiq.h> |
| 32 | |
Arnd Bergmann | 82906b1 | 2012-08-24 15:14:29 +0200 | [diff] [blame] | 33 | #include <linux/platform_data/asoc-imx-ssi.h> |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 34 | |
| 35 | #include "imx-ssi.h" |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 36 | #include "imx-pcm.h" |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 37 | |
| 38 | struct imx_pcm_runtime_data { |
Fabio Estevam | 2fb1488 | 2013-03-20 02:22:40 -0300 | [diff] [blame] | 39 | unsigned int period; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 40 | int periods; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 41 | unsigned long offset; |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 42 | unsigned long last_offset; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 43 | unsigned long size; |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 44 | struct hrtimer hrt; |
| 45 | int poll_time_ns; |
| 46 | struct snd_pcm_substream *substream; |
Sascha Hauer | 8392609 | 2010-04-14 09:17:30 +0200 | [diff] [blame] | 47 | atomic_t running; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 48 | }; |
| 49 | |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 50 | static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt) |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 51 | { |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 52 | struct imx_pcm_runtime_data *iprtd = |
| 53 | container_of(hrt, struct imx_pcm_runtime_data, hrt); |
| 54 | struct snd_pcm_substream *substream = iprtd->substream; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 55 | struct snd_pcm_runtime *runtime = substream->runtime; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 56 | struct pt_regs regs; |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 57 | unsigned long delta; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 58 | |
Sascha Hauer | 8392609 | 2010-04-14 09:17:30 +0200 | [diff] [blame] | 59 | if (!atomic_read(&iprtd->running)) |
| 60 | return HRTIMER_NORESTART; |
| 61 | |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 62 | get_fiq_regs(®s); |
| 63 | |
| 64 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 65 | iprtd->offset = regs.ARM_r8 & 0xffff; |
| 66 | else |
| 67 | iprtd->offset = regs.ARM_r9 & 0xffff; |
| 68 | |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 69 | /* How much data have we transferred since the last period report? */ |
| 70 | if (iprtd->offset >= iprtd->last_offset) |
| 71 | delta = iprtd->offset - iprtd->last_offset; |
| 72 | else |
| 73 | delta = runtime->buffer_size + iprtd->offset |
| 74 | - iprtd->last_offset; |
| 75 | |
| 76 | /* If we've transferred at least a period then report it and |
| 77 | * reset our poll time */ |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 78 | if (delta >= iprtd->period) { |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 79 | snd_pcm_period_elapsed(substream); |
| 80 | iprtd->last_offset = iprtd->offset; |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 81 | } |
| 82 | |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 83 | hrtimer_forward_now(hrt, ns_to_ktime(iprtd->poll_time_ns)); |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 84 | |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 85 | return HRTIMER_RESTART; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | static struct fiq_handler fh = { |
| 89 | .name = DRV_NAME, |
| 90 | }; |
| 91 | |
| 92 | static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream, |
| 93 | struct snd_pcm_hw_params *params) |
| 94 | { |
| 95 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 96 | struct imx_pcm_runtime_data *iprtd = runtime->private_data; |
| 97 | |
| 98 | iprtd->size = params_buffer_bytes(params); |
| 99 | iprtd->periods = params_periods(params); |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 100 | iprtd->period = params_period_bytes(params) ; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 101 | iprtd->offset = 0; |
Mark Brown | b4e82b5 | 2010-02-25 12:52:10 +0000 | [diff] [blame] | 102 | iprtd->last_offset = 0; |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 103 | iprtd->poll_time_ns = 1000000000 / params_rate(params) * |
| 104 | params_period_size(params); |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 105 | snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | static int snd_imx_pcm_prepare(struct snd_pcm_substream *substream) |
| 111 | { |
| 112 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 113 | struct imx_pcm_runtime_data *iprtd = runtime->private_data; |
| 114 | struct pt_regs regs; |
| 115 | |
| 116 | get_fiq_regs(®s); |
| 117 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 118 | regs.ARM_r8 = (iprtd->period * iprtd->periods - 1) << 16; |
| 119 | else |
| 120 | regs.ARM_r9 = (iprtd->period * iprtd->periods - 1) << 16; |
| 121 | |
| 122 | set_fiq_regs(®s); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static int fiq_enable; |
| 128 | static int imx_pcm_fiq; |
| 129 | |
| 130 | static int snd_imx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 131 | { |
| 132 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 133 | struct imx_pcm_runtime_data *iprtd = runtime->private_data; |
| 134 | |
| 135 | switch (cmd) { |
| 136 | case SNDRV_PCM_TRIGGER_START: |
| 137 | case SNDRV_PCM_TRIGGER_RESUME: |
| 138 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
Sascha Hauer | 8392609 | 2010-04-14 09:17:30 +0200 | [diff] [blame] | 139 | atomic_set(&iprtd->running, 1); |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 140 | hrtimer_start(&iprtd->hrt, ns_to_ktime(iprtd->poll_time_ns), |
| 141 | HRTIMER_MODE_REL); |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 142 | if (++fiq_enable == 1) |
| 143 | enable_fiq(imx_pcm_fiq); |
| 144 | |
| 145 | break; |
| 146 | |
| 147 | case SNDRV_PCM_TRIGGER_STOP: |
| 148 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 149 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
Sascha Hauer | 8392609 | 2010-04-14 09:17:30 +0200 | [diff] [blame] | 150 | atomic_set(&iprtd->running, 0); |
| 151 | |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 152 | if (--fiq_enable == 0) |
| 153 | disable_fiq(imx_pcm_fiq); |
| 154 | |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 155 | break; |
| 156 | default: |
| 157 | return -EINVAL; |
| 158 | } |
| 159 | |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | static snd_pcm_uframes_t snd_imx_pcm_pointer(struct snd_pcm_substream *substream) |
| 164 | { |
| 165 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 166 | struct imx_pcm_runtime_data *iprtd = runtime->private_data; |
| 167 | |
| 168 | return bytes_to_frames(substream->runtime, iprtd->offset); |
| 169 | } |
| 170 | |
| 171 | static struct snd_pcm_hardware snd_imx_hardware = { |
| 172 | .info = SNDRV_PCM_INFO_INTERLEAVED | |
| 173 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 174 | SNDRV_PCM_INFO_MMAP | |
| 175 | SNDRV_PCM_INFO_MMAP_VALID | |
| 176 | SNDRV_PCM_INFO_PAUSE | |
| 177 | SNDRV_PCM_INFO_RESUME, |
| 178 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 179 | .rate_min = 8000, |
| 180 | .channels_min = 2, |
| 181 | .channels_max = 2, |
| 182 | .buffer_bytes_max = IMX_SSI_DMABUF_SIZE, |
| 183 | .period_bytes_min = 128, |
| 184 | .period_bytes_max = 16 * 1024, |
Sascha Hauer | 565a79f | 2010-04-14 09:17:31 +0200 | [diff] [blame] | 185 | .periods_min = 4, |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 186 | .periods_max = 255, |
| 187 | .fifo_size = 0, |
| 188 | }; |
| 189 | |
| 190 | static int snd_imx_open(struct snd_pcm_substream *substream) |
| 191 | { |
| 192 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 193 | struct imx_pcm_runtime_data *iprtd; |
| 194 | int ret; |
| 195 | |
| 196 | iprtd = kzalloc(sizeof(*iprtd), GFP_KERNEL); |
Kulikov Vasiliy | 50e8ce1 | 2010-07-16 20:16:54 +0400 | [diff] [blame] | 197 | if (iprtd == NULL) |
| 198 | return -ENOMEM; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 199 | runtime->private_data = iprtd; |
| 200 | |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 201 | iprtd->substream = substream; |
| 202 | |
Sascha Hauer | 8392609 | 2010-04-14 09:17:30 +0200 | [diff] [blame] | 203 | atomic_set(&iprtd->running, 0); |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 204 | hrtimer_init(&iprtd->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
| 205 | iprtd->hrt.function = snd_hrtimer_callback; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 206 | |
| 207 | ret = snd_pcm_hw_constraint_integer(substream->runtime, |
| 208 | SNDRV_PCM_HW_PARAM_PERIODS); |
Kulikov Vasiliy | 50e8ce1 | 2010-07-16 20:16:54 +0400 | [diff] [blame] | 209 | if (ret < 0) { |
| 210 | kfree(iprtd); |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 211 | return ret; |
Kulikov Vasiliy | 50e8ce1 | 2010-07-16 20:16:54 +0400 | [diff] [blame] | 212 | } |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 213 | |
| 214 | snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware); |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | static int snd_imx_close(struct snd_pcm_substream *substream) |
| 219 | { |
| 220 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 221 | struct imx_pcm_runtime_data *iprtd = runtime->private_data; |
| 222 | |
Sascha Hauer | 43a3cec | 2010-04-08 11:31:26 +0200 | [diff] [blame] | 223 | hrtimer_cancel(&iprtd->hrt); |
| 224 | |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 225 | kfree(iprtd); |
| 226 | |
| 227 | return 0; |
| 228 | } |
| 229 | |
Shawn Guo | dbdf6b5 | 2013-04-25 11:18:50 +0800 | [diff] [blame] | 230 | static int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, |
| 231 | struct vm_area_struct *vma) |
| 232 | { |
| 233 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 234 | int ret; |
| 235 | |
| 236 | ret = dma_mmap_writecombine(substream->pcm->card->dev, vma, |
| 237 | runtime->dma_area, runtime->dma_addr, runtime->dma_bytes); |
| 238 | |
| 239 | pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret, |
| 240 | runtime->dma_area, |
| 241 | runtime->dma_addr, |
| 242 | runtime->dma_bytes); |
| 243 | return ret; |
| 244 | } |
| 245 | |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 246 | static struct snd_pcm_ops imx_pcm_ops = { |
| 247 | .open = snd_imx_open, |
| 248 | .close = snd_imx_close, |
| 249 | .ioctl = snd_pcm_lib_ioctl, |
| 250 | .hw_params = snd_imx_pcm_hw_params, |
| 251 | .prepare = snd_imx_pcm_prepare, |
| 252 | .trigger = snd_imx_pcm_trigger, |
| 253 | .pointer = snd_imx_pcm_pointer, |
| 254 | .mmap = snd_imx_pcm_mmap, |
| 255 | }; |
| 256 | |
Shawn Guo | dbdf6b5 | 2013-04-25 11:18:50 +0800 | [diff] [blame] | 257 | static int imx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) |
| 258 | { |
| 259 | struct snd_pcm_substream *substream = pcm->streams[stream].substream; |
| 260 | struct snd_dma_buffer *buf = &substream->dma_buffer; |
| 261 | size_t size = IMX_SSI_DMABUF_SIZE; |
| 262 | |
| 263 | buf->dev.type = SNDRV_DMA_TYPE_DEV; |
| 264 | buf->dev.dev = pcm->card->dev; |
| 265 | buf->private_data = NULL; |
| 266 | buf->area = dma_alloc_writecombine(pcm->card->dev, size, |
| 267 | &buf->addr, GFP_KERNEL); |
| 268 | if (!buf->area) |
| 269 | return -ENOMEM; |
| 270 | buf->bytes = size; |
| 271 | |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | static u64 imx_pcm_dmamask = DMA_BIT_MASK(32); |
| 276 | |
| 277 | static int imx_pcm_new(struct snd_soc_pcm_runtime *rtd) |
| 278 | { |
| 279 | struct snd_card *card = rtd->card->snd_card; |
| 280 | struct snd_pcm *pcm = rtd->pcm; |
| 281 | int ret = 0; |
| 282 | |
| 283 | if (!card->dev->dma_mask) |
| 284 | card->dev->dma_mask = &imx_pcm_dmamask; |
| 285 | if (!card->dev->coherent_dma_mask) |
| 286 | card->dev->coherent_dma_mask = DMA_BIT_MASK(32); |
| 287 | if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { |
| 288 | ret = imx_pcm_preallocate_dma_buffer(pcm, |
| 289 | SNDRV_PCM_STREAM_PLAYBACK); |
| 290 | if (ret) |
| 291 | goto out; |
| 292 | } |
| 293 | |
| 294 | if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { |
| 295 | ret = imx_pcm_preallocate_dma_buffer(pcm, |
| 296 | SNDRV_PCM_STREAM_CAPTURE); |
| 297 | if (ret) |
| 298 | goto out; |
| 299 | } |
| 300 | |
| 301 | out: |
| 302 | return ret; |
| 303 | } |
| 304 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 305 | static int ssi_irq = 0; |
| 306 | |
Liam Girdwood | 552d1ef | 2011-06-07 16:08:33 +0100 | [diff] [blame] | 307 | static int imx_pcm_fiq_new(struct snd_soc_pcm_runtime *rtd) |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 308 | { |
Liam Girdwood | 552d1ef | 2011-06-07 16:08:33 +0100 | [diff] [blame] | 309 | struct snd_pcm *pcm = rtd->pcm; |
Wolfram Sang | 35dcf58 | 2011-08-25 15:54:56 +0200 | [diff] [blame] | 310 | struct snd_pcm_substream *substream; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 311 | int ret; |
| 312 | |
Liam Girdwood | 552d1ef | 2011-06-07 16:08:33 +0100 | [diff] [blame] | 313 | ret = imx_pcm_new(rtd); |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 314 | if (ret) |
| 315 | return ret; |
| 316 | |
Wolfram Sang | 35dcf58 | 2011-08-25 15:54:56 +0200 | [diff] [blame] | 317 | substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; |
| 318 | if (substream) { |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 319 | struct snd_dma_buffer *buf = &substream->dma_buffer; |
| 320 | |
| 321 | imx_ssi_fiq_tx_buffer = (unsigned long)buf->area; |
| 322 | } |
| 323 | |
Wolfram Sang | 35dcf58 | 2011-08-25 15:54:56 +0200 | [diff] [blame] | 324 | substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; |
| 325 | if (substream) { |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 326 | struct snd_dma_buffer *buf = &substream->dma_buffer; |
| 327 | |
| 328 | imx_ssi_fiq_rx_buffer = (unsigned long)buf->area; |
| 329 | } |
| 330 | |
| 331 | set_fiq_handler(&imx_ssi_fiq_start, |
| 332 | &imx_ssi_fiq_end - &imx_ssi_fiq_start); |
| 333 | |
| 334 | return 0; |
| 335 | } |
| 336 | |
Shawn Guo | dbdf6b5 | 2013-04-25 11:18:50 +0800 | [diff] [blame] | 337 | static void imx_pcm_free(struct snd_pcm *pcm) |
| 338 | { |
| 339 | struct snd_pcm_substream *substream; |
| 340 | struct snd_dma_buffer *buf; |
| 341 | int stream; |
| 342 | |
| 343 | for (stream = 0; stream < 2; stream++) { |
| 344 | substream = pcm->streams[stream].substream; |
| 345 | if (!substream) |
| 346 | continue; |
| 347 | |
| 348 | buf = &substream->dma_buffer; |
| 349 | if (!buf->area) |
| 350 | continue; |
| 351 | |
| 352 | dma_free_writecombine(pcm->card->dev, buf->bytes, |
| 353 | buf->area, buf->addr); |
| 354 | buf->area = NULL; |
| 355 | } |
| 356 | } |
| 357 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 358 | static void imx_pcm_fiq_free(struct snd_pcm *pcm) |
| 359 | { |
| 360 | mxc_set_irq_fiq(ssi_irq, 0); |
| 361 | release_fiq(&fh); |
| 362 | imx_pcm_free(pcm); |
| 363 | } |
| 364 | |
| 365 | static struct snd_soc_platform_driver imx_soc_platform_fiq = { |
| 366 | .ops = &imx_pcm_ops, |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 367 | .pcm_new = imx_pcm_fiq_new, |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 368 | .pcm_free = imx_pcm_fiq_free, |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 369 | }; |
| 370 | |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 371 | int imx_pcm_fiq_init(struct platform_device *pdev, |
| 372 | struct imx_pcm_fiq_params *params) |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 373 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 374 | int ret; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 375 | |
| 376 | ret = claim_fiq(&fh); |
| 377 | if (ret) { |
| 378 | dev_err(&pdev->dev, "failed to claim fiq: %d", ret); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 379 | return ret; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 380 | } |
| 381 | |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 382 | mxc_set_irq_fiq(params->irq, 1); |
| 383 | ssi_irq = params->irq; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 384 | |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 385 | imx_pcm_fiq = params->irq; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 386 | |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 387 | imx_ssi_fiq_base = (unsigned long)params->base; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 388 | |
Markus Pargmann | 9051cba | 2013-06-20 15:20:21 +0200 | [diff] [blame] | 389 | params->dma_params_tx->maxburst = 4; |
| 390 | params->dma_params_rx->maxburst = 6; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 391 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 392 | ret = snd_soc_register_platform(&pdev->dev, &imx_soc_platform_fiq); |
| 393 | if (ret) |
| 394 | goto failed_register; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 395 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 396 | return 0; |
| 397 | |
| 398 | failed_register: |
| 399 | mxc_set_irq_fiq(ssi_irq, 0); |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 400 | release_fiq(&fh); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 401 | |
| 402 | return ret; |
Sascha Hauer | 8380222 | 2009-11-25 16:41:04 +0100 | [diff] [blame] | 403 | } |
Shawn Guo | dbdf6b5 | 2013-04-25 11:18:50 +0800 | [diff] [blame] | 404 | EXPORT_SYMBOL_GPL(imx_pcm_fiq_init); |
Shawn Guo | 88e89f5 | 2013-04-25 11:18:48 +0800 | [diff] [blame] | 405 | |
| 406 | void imx_pcm_fiq_exit(struct platform_device *pdev) |
| 407 | { |
| 408 | snd_soc_unregister_platform(&pdev->dev); |
| 409 | } |
Shawn Guo | dbdf6b5 | 2013-04-25 11:18:50 +0800 | [diff] [blame] | 410 | EXPORT_SYMBOL_GPL(imx_pcm_fiq_exit); |
Mark Brown | 3c1c32d | 2013-08-16 12:07:19 +0100 | [diff] [blame] | 411 | |
| 412 | MODULE_LICENSE("GPL"); |