1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 2 /*
3 * atmel-pcm.c -- ALSA PCM interface for the 3 * atmel-pcm.c -- ALSA PCM interface for the Atmel atmel SoC.
4 * 4 *
5 * Copyright (C) 2005 SAN People 5 * Copyright (C) 2005 SAN People
6 * Copyright (C) 2008 Atmel 6 * Copyright (C) 2008 Atmel
7 * 7 *
8 * Authors: Sedji Gaouaou <sedji.gaouaou@atmel 8 * Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
9 * 9 *
10 * Based on at91-pcm. by: 10 * Based on at91-pcm. by:
11 * Frank Mandarino <fmandarino@endrelia.com> 11 * Frank Mandarino <fmandarino@endrelia.com>
12 * Copyright 2006 Endrelia Technologies Inc. 12 * Copyright 2006 Endrelia Technologies Inc.
13 * 13 *
14 * Based on pxa2xx-pcm.c by: 14 * Based on pxa2xx-pcm.c by:
15 * 15 *
16 * Author: Nicolas Pitre 16 * Author: Nicolas Pitre
17 * Created: Nov 30, 2004 17 * Created: Nov 30, 2004
18 * Copyright: (C) 2004 MontaVista Software, 18 * Copyright: (C) 2004 MontaVista Software, Inc.
19 */ 19 */
20 20
21 #include <linux/module.h> 21 #include <linux/module.h>
22 #include <linux/init.h> 22 #include <linux/init.h>
23 #include <linux/platform_device.h> 23 #include <linux/platform_device.h>
24 #include <linux/slab.h> 24 #include <linux/slab.h>
25 #include <linux/dma-mapping.h> 25 #include <linux/dma-mapping.h>
26 #include <linux/atmel_pdc.h> 26 #include <linux/atmel_pdc.h>
27 #include <linux/atmel-ssc.h> 27 #include <linux/atmel-ssc.h>
28 28
29 #include <sound/core.h> 29 #include <sound/core.h>
30 #include <sound/pcm.h> 30 #include <sound/pcm.h>
31 #include <sound/pcm_params.h> 31 #include <sound/pcm_params.h>
32 #include <sound/soc.h> 32 #include <sound/soc.h>
33 33
34 #include "atmel-pcm.h" 34 #include "atmel-pcm.h"
35 35
36 36
37 static int atmel_pcm_new(struct snd_soc_compon !! 37 static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,
38 struct snd_soc_pcm_ru !! 38 int stream)
>> 39 {
>> 40 struct snd_pcm_substream *substream = pcm->streams[stream].substream;
>> 41 struct snd_dma_buffer *buf = &substream->dma_buffer;
>> 42 size_t size = ATMEL_SSC_DMABUF_SIZE;
>> 43
>> 44 buf->dev.type = SNDRV_DMA_TYPE_DEV;
>> 45 buf->dev.dev = pcm->card->dev;
>> 46 buf->private_data = NULL;
>> 47 buf->area = dma_alloc_coherent(pcm->card->dev, size,
>> 48 &buf->addr, GFP_KERNEL);
>> 49 pr_debug("atmel-pcm: alloc dma buffer: area=%p, addr=%p, size=%zu\n",
>> 50 (void *)buf->area, (void *)(long)buf->addr, size);
>> 51
>> 52 if (!buf->area)
>> 53 return -ENOMEM;
>> 54
>> 55 buf->bytes = size;
>> 56 return 0;
>> 57 }
>> 58
>> 59 static int atmel_pcm_mmap(struct snd_pcm_substream *substream,
>> 60 struct vm_area_struct *vma)
>> 61 {
>> 62 return remap_pfn_range(vma, vma->vm_start,
>> 63 substream->dma_buffer.addr >> PAGE_SHIFT,
>> 64 vma->vm_end - vma->vm_start, vma->vm_page_prot);
>> 65 }
>> 66
>> 67 static int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd)
39 { 68 {
40 struct snd_card *card = rtd->card->snd 69 struct snd_card *card = rtd->card->snd_card;
>> 70 struct snd_pcm *pcm = rtd->pcm;
41 int ret; 71 int ret;
42 72
43 ret = dma_coerce_mask_and_coherent(car 73 ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
44 if (ret) 74 if (ret)
45 return ret; 75 return ret;
46 76
47 snd_pcm_set_managed_buffer_all(rtd->pc !! 77 if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
48 card->d !! 78 pr_debug("atmel-pcm: allocating PCM playback DMA buffer\n");
49 ATMEL_S !! 79 ret = atmel_pcm_preallocate_dma_buffer(pcm,
>> 80 SNDRV_PCM_STREAM_PLAYBACK);
>> 81 if (ret)
>> 82 goto out;
>> 83 }
50 84
51 return 0; !! 85 if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
>> 86 pr_debug("atmel-pcm: allocating PCM capture DMA buffer\n");
>> 87 ret = atmel_pcm_preallocate_dma_buffer(pcm,
>> 88 SNDRV_PCM_STREAM_CAPTURE);
>> 89 if (ret)
>> 90 goto out;
>> 91 }
>> 92 out:
>> 93 return ret;
>> 94 }
>> 95
>> 96 static void atmel_pcm_free(struct snd_pcm *pcm)
>> 97 {
>> 98 struct snd_pcm_substream *substream;
>> 99 struct snd_dma_buffer *buf;
>> 100 int stream;
>> 101
>> 102 for (stream = 0; stream < 2; stream++) {
>> 103 substream = pcm->streams[stream].substream;
>> 104 if (!substream)
>> 105 continue;
>> 106
>> 107 buf = &substream->dma_buffer;
>> 108 if (!buf->area)
>> 109 continue;
>> 110 dma_free_coherent(pcm->card->dev, buf->bytes,
>> 111 buf->area, buf->addr);
>> 112 buf->area = NULL;
>> 113 }
52 } 114 }
53 115
54 /*-------------------------------------------- 116 /*--------------------------------------------------------------------------*\
55 * Hardware definition 117 * Hardware definition
56 \*-------------------------------------------- 118 \*--------------------------------------------------------------------------*/
57 /* TODO: These values were taken from the AT91 119 /* TODO: These values were taken from the AT91 platform driver, check
58 * them against real values for AT32 120 * them against real values for AT32
59 */ 121 */
60 static const struct snd_pcm_hardware atmel_pcm 122 static const struct snd_pcm_hardware atmel_pcm_hardware = {
61 .info = SNDRV_PCM_IN 123 .info = SNDRV_PCM_INFO_MMAP |
62 SNDRV_PCM_IN 124 SNDRV_PCM_INFO_MMAP_VALID |
63 SNDRV_PCM_IN 125 SNDRV_PCM_INFO_INTERLEAVED |
64 SNDRV_PCM_IN 126 SNDRV_PCM_INFO_PAUSE,
65 .period_bytes_min = 32, 127 .period_bytes_min = 32,
66 .period_bytes_max = 8192, 128 .period_bytes_max = 8192,
67 .periods_min = 2, 129 .periods_min = 2,
68 .periods_max = 1024, 130 .periods_max = 1024,
69 .buffer_bytes_max = ATMEL_SSC_DM 131 .buffer_bytes_max = ATMEL_SSC_DMABUF_SIZE,
70 }; 132 };
71 133
72 134
73 /*-------------------------------------------- 135 /*--------------------------------------------------------------------------*\
74 * Data types 136 * Data types
75 \*-------------------------------------------- 137 \*--------------------------------------------------------------------------*/
76 struct atmel_runtime_data { 138 struct atmel_runtime_data {
77 struct atmel_pcm_dma_params *params; 139 struct atmel_pcm_dma_params *params;
78 dma_addr_t dma_buffer; /* phy 140 dma_addr_t dma_buffer; /* physical address of dma buffer */
79 dma_addr_t dma_buffer_end; /* fir 141 dma_addr_t dma_buffer_end; /* first address beyond DMA buffer */
80 size_t period_size; 142 size_t period_size;
81 143
82 dma_addr_t period_ptr; /* phy 144 dma_addr_t period_ptr; /* physical address of next period */
83 }; 145 };
84 146
85 /*-------------------------------------------- 147 /*--------------------------------------------------------------------------*\
86 * ISR 148 * ISR
87 \*-------------------------------------------- 149 \*--------------------------------------------------------------------------*/
88 static void atmel_pcm_dma_irq(u32 ssc_sr, 150 static void atmel_pcm_dma_irq(u32 ssc_sr,
89 struct snd_pcm_substream *substream) 151 struct snd_pcm_substream *substream)
90 { 152 {
91 struct atmel_runtime_data *prtd = subs 153 struct atmel_runtime_data *prtd = substream->runtime->private_data;
92 struct atmel_pcm_dma_params *params = 154 struct atmel_pcm_dma_params *params = prtd->params;
93 static int count; 155 static int count;
94 156
95 count++; 157 count++;
96 158
97 if (ssc_sr & params->mask->ssc_endbuf) 159 if (ssc_sr & params->mask->ssc_endbuf) {
98 pr_warn("atmel-pcm: buffer %s 160 pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x, count=%d)\n",
99 substream->str 161 substream->stream == SNDRV_PCM_STREAM_PLAYBACK
100 ? "underrun" : 162 ? "underrun" : "overrun",
101 params->name, 163 params->name, ssc_sr, count);
102 164
103 /* re-start the PDC */ 165 /* re-start the PDC */
104 ssc_writex(params->ssc->regs, 166 ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
105 params->mask->pdc_d 167 params->mask->pdc_disable);
106 prtd->period_ptr += prtd->peri 168 prtd->period_ptr += prtd->period_size;
107 if (prtd->period_ptr >= prtd-> 169 if (prtd->period_ptr >= prtd->dma_buffer_end)
108 prtd->period_ptr = prt 170 prtd->period_ptr = prtd->dma_buffer;
109 171
110 ssc_writex(params->ssc->regs, 172 ssc_writex(params->ssc->regs, params->pdc->xpr,
111 prtd->period_ptr); 173 prtd->period_ptr);
112 ssc_writex(params->ssc->regs, 174 ssc_writex(params->ssc->regs, params->pdc->xcr,
113 prtd->period_size / 175 prtd->period_size / params->pdc_xfer_size);
114 ssc_writex(params->ssc->regs, 176 ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
115 params->mask->pdc_e 177 params->mask->pdc_enable);
116 } 178 }
117 179
118 if (ssc_sr & params->mask->ssc_endx) { 180 if (ssc_sr & params->mask->ssc_endx) {
119 /* Load the PDC next pointer a 181 /* Load the PDC next pointer and counter registers */
120 prtd->period_ptr += prtd->peri 182 prtd->period_ptr += prtd->period_size;
121 if (prtd->period_ptr >= prtd-> 183 if (prtd->period_ptr >= prtd->dma_buffer_end)
122 prtd->period_ptr = prt 184 prtd->period_ptr = prtd->dma_buffer;
123 185
124 ssc_writex(params->ssc->regs, 186 ssc_writex(params->ssc->regs, params->pdc->xnpr,
125 prtd->period_ptr); 187 prtd->period_ptr);
126 ssc_writex(params->ssc->regs, 188 ssc_writex(params->ssc->regs, params->pdc->xncr,
127 prtd->period_size / 189 prtd->period_size / params->pdc_xfer_size);
128 } 190 }
129 191
130 snd_pcm_period_elapsed(substream); 192 snd_pcm_period_elapsed(substream);
131 } 193 }
132 194
133 195
134 /*-------------------------------------------- 196 /*--------------------------------------------------------------------------*\
135 * PCM operations 197 * PCM operations
136 \*-------------------------------------------- 198 \*--------------------------------------------------------------------------*/
137 static int atmel_pcm_hw_params(struct snd_soc_ !! 199 static int atmel_pcm_hw_params(struct snd_pcm_substream *substream,
138 struct snd_pcm_ !! 200 struct snd_pcm_hw_params *params)
139 struct snd_pcm_ <<
140 { 201 {
141 struct snd_pcm_runtime *runtime = subs 202 struct snd_pcm_runtime *runtime = substream->runtime;
142 struct atmel_runtime_data *prtd = runt 203 struct atmel_runtime_data *prtd = runtime->private_data;
143 struct snd_soc_pcm_runtime *rtd = snd_ !! 204 struct snd_soc_pcm_runtime *rtd = substream->private_data;
144 205
145 /* this may get called several times b 206 /* this may get called several times by oss emulation
146 * with different params */ 207 * with different params */
147 208
148 prtd->params = snd_soc_dai_get_dma_dat !! 209 snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
>> 210 runtime->dma_bytes = params_buffer_bytes(params);
>> 211
>> 212 prtd->params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
149 prtd->params->dma_intr_handler = atmel 213 prtd->params->dma_intr_handler = atmel_pcm_dma_irq;
150 214
151 prtd->dma_buffer = runtime->dma_addr; 215 prtd->dma_buffer = runtime->dma_addr;
152 prtd->dma_buffer_end = runtime->dma_ad 216 prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
153 prtd->period_size = params_period_byte 217 prtd->period_size = params_period_bytes(params);
154 218
155 pr_debug("atmel-pcm: " 219 pr_debug("atmel-pcm: "
156 "hw_params: DMA for %s initial 220 "hw_params: DMA for %s initialized "
157 "(dma_bytes=%zu, period_size=% 221 "(dma_bytes=%zu, period_size=%zu)\n",
158 prtd->params->name, 222 prtd->params->name,
159 runtime->dma_bytes, 223 runtime->dma_bytes,
160 prtd->period_size); 224 prtd->period_size);
161 return 0; 225 return 0;
162 } 226 }
163 227
164 static int atmel_pcm_hw_free(struct snd_soc_co !! 228 static int atmel_pcm_hw_free(struct snd_pcm_substream *substream)
165 struct snd_pcm_su <<
166 { 229 {
167 struct atmel_runtime_data *prtd = subs 230 struct atmel_runtime_data *prtd = substream->runtime->private_data;
168 struct atmel_pcm_dma_params *params = 231 struct atmel_pcm_dma_params *params = prtd->params;
169 232
170 if (params != NULL) { 233 if (params != NULL) {
171 ssc_writex(params->ssc->regs, 234 ssc_writex(params->ssc->regs, SSC_PDC_PTCR,
172 params->mask->pdc_d 235 params->mask->pdc_disable);
173 prtd->params->dma_intr_handler 236 prtd->params->dma_intr_handler = NULL;
174 } 237 }
175 238
176 return 0; 239 return 0;
177 } 240 }
178 241
179 static int atmel_pcm_prepare(struct snd_soc_co !! 242 static int atmel_pcm_prepare(struct snd_pcm_substream *substream)
180 struct snd_pcm_su <<
181 { 243 {
182 struct atmel_runtime_data *prtd = subs 244 struct atmel_runtime_data *prtd = substream->runtime->private_data;
183 struct atmel_pcm_dma_params *params = 245 struct atmel_pcm_dma_params *params = prtd->params;
184 246
185 ssc_writex(params->ssc->regs, SSC_IDR, 247 ssc_writex(params->ssc->regs, SSC_IDR,
186 params->mask->ssc_endx | pa 248 params->mask->ssc_endx | params->mask->ssc_endbuf);
187 ssc_writex(params->ssc->regs, ATMEL_PD 249 ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
188 params->mask->pdc_disable); 250 params->mask->pdc_disable);
189 return 0; 251 return 0;
190 } 252 }
191 253
192 static int atmel_pcm_trigger(struct snd_soc_co !! 254 static int atmel_pcm_trigger(struct snd_pcm_substream *substream,
193 struct snd_pcm_su !! 255 int cmd)
194 { 256 {
195 struct snd_pcm_runtime *rtd = substrea 257 struct snd_pcm_runtime *rtd = substream->runtime;
196 struct atmel_runtime_data *prtd = rtd- 258 struct atmel_runtime_data *prtd = rtd->private_data;
197 struct atmel_pcm_dma_params *params = 259 struct atmel_pcm_dma_params *params = prtd->params;
198 int ret = 0; 260 int ret = 0;
199 261
200 pr_debug("atmel-pcm:buffer_size = %ld, 262 pr_debug("atmel-pcm:buffer_size = %ld,"
201 "dma_area = %p, dma_bytes = %z 263 "dma_area = %p, dma_bytes = %zu\n",
202 rtd->buffer_size, rtd->dma_are 264 rtd->buffer_size, rtd->dma_area, rtd->dma_bytes);
203 265
204 switch (cmd) { 266 switch (cmd) {
205 case SNDRV_PCM_TRIGGER_START: 267 case SNDRV_PCM_TRIGGER_START:
206 prtd->period_ptr = prtd->dma_b 268 prtd->period_ptr = prtd->dma_buffer;
207 269
208 ssc_writex(params->ssc->regs, 270 ssc_writex(params->ssc->regs, params->pdc->xpr,
209 prtd->period_ptr); 271 prtd->period_ptr);
210 ssc_writex(params->ssc->regs, 272 ssc_writex(params->ssc->regs, params->pdc->xcr,
211 prtd->period_size / 273 prtd->period_size / params->pdc_xfer_size);
212 274
213 prtd->period_ptr += prtd->peri 275 prtd->period_ptr += prtd->period_size;
214 ssc_writex(params->ssc->regs, 276 ssc_writex(params->ssc->regs, params->pdc->xnpr,
215 prtd->period_ptr); 277 prtd->period_ptr);
216 ssc_writex(params->ssc->regs, 278 ssc_writex(params->ssc->regs, params->pdc->xncr,
217 prtd->period_size / 279 prtd->period_size / params->pdc_xfer_size);
218 280
219 pr_debug("atmel-pcm: trigger: 281 pr_debug("atmel-pcm: trigger: "
220 "period_ptr=%lx, xpr=% 282 "period_ptr=%lx, xpr=%u, "
221 "xcr=%u, xnpr=%u, xncr 283 "xcr=%u, xnpr=%u, xncr=%u\n",
222 (unsigned long)prtd->p 284 (unsigned long)prtd->period_ptr,
223 ssc_readx(params->ssc- 285 ssc_readx(params->ssc->regs, params->pdc->xpr),
224 ssc_readx(params->ssc- 286 ssc_readx(params->ssc->regs, params->pdc->xcr),
225 ssc_readx(params->ssc- 287 ssc_readx(params->ssc->regs, params->pdc->xnpr),
226 ssc_readx(params->ssc- 288 ssc_readx(params->ssc->regs, params->pdc->xncr));
227 289
228 ssc_writex(params->ssc->regs, 290 ssc_writex(params->ssc->regs, SSC_IER,
229 params->mask->ssc_e 291 params->mask->ssc_endx | params->mask->ssc_endbuf);
230 ssc_writex(params->ssc->regs, 292 ssc_writex(params->ssc->regs, SSC_PDC_PTCR,
231 params->mask->pdc_e 293 params->mask->pdc_enable);
232 294
233 pr_debug("sr=%u imr=%u\n", 295 pr_debug("sr=%u imr=%u\n",
234 ssc_readx(params->ssc- 296 ssc_readx(params->ssc->regs, SSC_SR),
235 ssc_readx(params->ssc- 297 ssc_readx(params->ssc->regs, SSC_IER));
236 break; /* SNDRV_PCM_T 298 break; /* SNDRV_PCM_TRIGGER_START */
237 299
238 case SNDRV_PCM_TRIGGER_STOP: 300 case SNDRV_PCM_TRIGGER_STOP:
239 case SNDRV_PCM_TRIGGER_SUSPEND: 301 case SNDRV_PCM_TRIGGER_SUSPEND:
240 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 302 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
241 ssc_writex(params->ssc->regs, 303 ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
242 params->mask->pdc_d 304 params->mask->pdc_disable);
243 break; 305 break;
244 306
245 case SNDRV_PCM_TRIGGER_RESUME: 307 case SNDRV_PCM_TRIGGER_RESUME:
246 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 308 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
247 ssc_writex(params->ssc->regs, 309 ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
248 params->mask->pdc_e 310 params->mask->pdc_enable);
249 break; 311 break;
250 312
251 default: 313 default:
252 ret = -EINVAL; 314 ret = -EINVAL;
253 } 315 }
254 316
255 return ret; 317 return ret;
256 } 318 }
257 319
258 static snd_pcm_uframes_t atmel_pcm_pointer(str !! 320 static snd_pcm_uframes_t atmel_pcm_pointer(
259 str !! 321 struct snd_pcm_substream *substream)
260 { 322 {
261 struct snd_pcm_runtime *runtime = subs 323 struct snd_pcm_runtime *runtime = substream->runtime;
262 struct atmel_runtime_data *prtd = runt 324 struct atmel_runtime_data *prtd = runtime->private_data;
263 struct atmel_pcm_dma_params *params = 325 struct atmel_pcm_dma_params *params = prtd->params;
264 dma_addr_t ptr; 326 dma_addr_t ptr;
265 snd_pcm_uframes_t x; 327 snd_pcm_uframes_t x;
266 328
267 ptr = (dma_addr_t) ssc_readx(params->s 329 ptr = (dma_addr_t) ssc_readx(params->ssc->regs, params->pdc->xpr);
268 x = bytes_to_frames(runtime, ptr - prt 330 x = bytes_to_frames(runtime, ptr - prtd->dma_buffer);
269 331
270 if (x == runtime->buffer_size) 332 if (x == runtime->buffer_size)
271 x = 0; 333 x = 0;
272 334
273 return x; 335 return x;
274 } 336 }
275 337
276 static int atmel_pcm_open(struct snd_soc_compo !! 338 static int atmel_pcm_open(struct snd_pcm_substream *substream)
277 struct snd_pcm_subst <<
278 { 339 {
279 struct snd_pcm_runtime *runtime = subs 340 struct snd_pcm_runtime *runtime = substream->runtime;
280 struct atmel_runtime_data *prtd; 341 struct atmel_runtime_data *prtd;
281 int ret = 0; 342 int ret = 0;
282 343
283 snd_soc_set_runtime_hwparams(substream 344 snd_soc_set_runtime_hwparams(substream, &atmel_pcm_hardware);
284 345
285 /* ensure that buffer size is a multip 346 /* ensure that buffer size is a multiple of period size */
286 ret = snd_pcm_hw_constraint_integer(ru 347 ret = snd_pcm_hw_constraint_integer(runtime,
287 348 SNDRV_PCM_HW_PARAM_PERIODS);
288 if (ret < 0) 349 if (ret < 0)
289 goto out; 350 goto out;
290 351
291 prtd = kzalloc(sizeof(struct atmel_run 352 prtd = kzalloc(sizeof(struct atmel_runtime_data), GFP_KERNEL);
292 if (prtd == NULL) { 353 if (prtd == NULL) {
293 ret = -ENOMEM; 354 ret = -ENOMEM;
294 goto out; 355 goto out;
295 } 356 }
296 runtime->private_data = prtd; 357 runtime->private_data = prtd;
297 358
298 out: 359 out:
299 return ret; 360 return ret;
300 } 361 }
301 362
302 static int atmel_pcm_close(struct snd_soc_comp !! 363 static int atmel_pcm_close(struct snd_pcm_substream *substream)
303 struct snd_pcm_subs <<
304 { 364 {
305 struct atmel_runtime_data *prtd = subs 365 struct atmel_runtime_data *prtd = substream->runtime->private_data;
306 366
307 kfree(prtd); 367 kfree(prtd);
308 return 0; 368 return 0;
309 } 369 }
310 370
311 static const struct snd_soc_component_driver a !! 371 static const struct snd_pcm_ops atmel_pcm_ops = {
312 .open = atmel_pcm_open, 372 .open = atmel_pcm_open,
313 .close = atmel_pcm_close, 373 .close = atmel_pcm_close,
>> 374 .ioctl = snd_pcm_lib_ioctl,
314 .hw_params = atmel_pcm_hw_params, 375 .hw_params = atmel_pcm_hw_params,
315 .hw_free = atmel_pcm_hw_free, 376 .hw_free = atmel_pcm_hw_free,
316 .prepare = atmel_pcm_prepare, 377 .prepare = atmel_pcm_prepare,
317 .trigger = atmel_pcm_trigger, 378 .trigger = atmel_pcm_trigger,
318 .pointer = atmel_pcm_pointer, 379 .pointer = atmel_pcm_pointer,
319 .pcm_construct = atmel_pcm_new, !! 380 .mmap = atmel_pcm_mmap,
>> 381 };
>> 382
>> 383 static struct snd_soc_component_driver atmel_soc_platform = {
>> 384 .ops = &atmel_pcm_ops,
>> 385 .pcm_new = atmel_pcm_new,
>> 386 .pcm_free = atmel_pcm_free,
320 }; 387 };
321 388
322 int atmel_pcm_pdc_platform_register(struct dev 389 int atmel_pcm_pdc_platform_register(struct device *dev)
323 { 390 {
324 return devm_snd_soc_register_component 391 return devm_snd_soc_register_component(dev, &atmel_soc_platform,
325 392 NULL, 0);
326 } 393 }
327 EXPORT_SYMBOL(atmel_pcm_pdc_platform_register) 394 EXPORT_SYMBOL(atmel_pcm_pdc_platform_register);
>> 395
>> 396 void atmel_pcm_pdc_platform_unregister(struct device *dev)
>> 397 {
>> 398 }
>> 399 EXPORT_SYMBOL(atmel_pcm_pdc_platform_unregister);
328 400
329 MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@at 401 MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");
330 MODULE_DESCRIPTION("Atmel PCM module"); 402 MODULE_DESCRIPTION("Atmel PCM module");
331 MODULE_LICENSE("GPL"); 403 MODULE_LICENSE("GPL");
332 404
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