1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * Driver for Atmel AC97C 3 * Driver for Atmel AC97C
4 * 4 *
5 * Copyright (C) 2005-2009 Atmel Corporation 5 * Copyright (C) 2005-2009 Atmel Corporation
6 */ 6 */
7 #include <linux/clk.h> 7 #include <linux/clk.h>
8 #include <linux/delay.h> 8 #include <linux/delay.h>
9 #include <linux/bitmap.h> 9 #include <linux/bitmap.h>
10 #include <linux/device.h> 10 #include <linux/device.h>
11 #include <linux/atmel_pdc.h> 11 #include <linux/atmel_pdc.h>
12 #include <linux/gpio/consumer.h> 12 #include <linux/gpio/consumer.h>
13 #include <linux/init.h> 13 #include <linux/init.h>
14 #include <linux/interrupt.h> 14 #include <linux/interrupt.h>
15 #include <linux/mod_devicetable.h> 15 #include <linux/mod_devicetable.h>
16 #include <linux/module.h> 16 #include <linux/module.h>
17 #include <linux/platform_device.h> 17 #include <linux/platform_device.h>
18 #include <linux/mutex.h> 18 #include <linux/mutex.h>
19 #include <linux/types.h> 19 #include <linux/types.h>
20 #include <linux/io.h> 20 #include <linux/io.h>
21 21
22 #include <sound/core.h> 22 #include <sound/core.h>
23 #include <sound/initval.h> 23 #include <sound/initval.h>
24 #include <sound/pcm.h> 24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h> 25 #include <sound/pcm_params.h>
26 #include <sound/ac97_codec.h> 26 #include <sound/ac97_codec.h>
27 #include <sound/memalloc.h> 27 #include <sound/memalloc.h>
28 28
29 #include "ac97c.h" 29 #include "ac97c.h"
30 30
31 /* Serialize access to opened variable */ 31 /* Serialize access to opened variable */
32 static DEFINE_MUTEX(opened_mutex); 32 static DEFINE_MUTEX(opened_mutex);
33 33
34 struct atmel_ac97c { 34 struct atmel_ac97c {
35 struct clk *pclk; 35 struct clk *pclk;
36 struct platform_device *pdev; 36 struct platform_device *pdev;
37 37
38 struct snd_pcm_substream *playb 38 struct snd_pcm_substream *playback_substream;
39 struct snd_pcm_substream *captu 39 struct snd_pcm_substream *capture_substream;
40 struct snd_card *card; 40 struct snd_card *card;
41 struct snd_pcm *pcm; 41 struct snd_pcm *pcm;
42 struct snd_ac97 *ac97; 42 struct snd_ac97 *ac97;
43 struct snd_ac97_bus *ac97_ 43 struct snd_ac97_bus *ac97_bus;
44 44
45 u64 cur_fo 45 u64 cur_format;
46 unsigned int cur_ra 46 unsigned int cur_rate;
47 int playba 47 int playback_period, capture_period;
48 /* Serialize access to opened variable 48 /* Serialize access to opened variable */
49 spinlock_t lock; 49 spinlock_t lock;
50 void __iomem *regs; 50 void __iomem *regs;
51 int irq; 51 int irq;
52 int opened 52 int opened;
53 struct gpio_desc *reset 53 struct gpio_desc *reset_pin;
54 }; 54 };
55 55
56 #define get_chip(card) ((struct atmel_ac97c *) 56 #define get_chip(card) ((struct atmel_ac97c *)(card)->private_data)
57 57
58 #define ac97c_writel(chip, reg, val) 58 #define ac97c_writel(chip, reg, val) \
59 __raw_writel((val), (chip)->regs + AC9 59 __raw_writel((val), (chip)->regs + AC97C_##reg)
60 #define ac97c_readl(chip, reg) 60 #define ac97c_readl(chip, reg) \
61 __raw_readl((chip)->regs + AC97C_##reg 61 __raw_readl((chip)->regs + AC97C_##reg)
62 62
63 static const struct snd_pcm_hardware atmel_ac9 63 static const struct snd_pcm_hardware atmel_ac97c_hw = {
64 .info = (SNDRV_PCM_I 64 .info = (SNDRV_PCM_INFO_MMAP
65 | SNDRV_PCM_ 65 | SNDRV_PCM_INFO_MMAP_VALID
66 | SNDRV_PCM_ 66 | SNDRV_PCM_INFO_INTERLEAVED
67 | SNDRV_PCM_ 67 | SNDRV_PCM_INFO_BLOCK_TRANSFER
68 | SNDRV_PCM_ 68 | SNDRV_PCM_INFO_JOINT_DUPLEX
69 | SNDRV_PCM_ 69 | SNDRV_PCM_INFO_RESUME
70 | SNDRV_PCM_ 70 | SNDRV_PCM_INFO_PAUSE),
71 .formats = (SNDRV_PCM_F 71 .formats = (SNDRV_PCM_FMTBIT_S16_BE
72 | SNDRV_PCM_ 72 | SNDRV_PCM_FMTBIT_S16_LE),
73 .rates = (SNDRV_PCM_R 73 .rates = (SNDRV_PCM_RATE_CONTINUOUS),
74 .rate_min = 4000, 74 .rate_min = 4000,
75 .rate_max = 48000, 75 .rate_max = 48000,
76 .channels_min = 1, 76 .channels_min = 1,
77 .channels_max = 2, 77 .channels_max = 2,
78 .buffer_bytes_max = 2 * 2 * 64 * 78 .buffer_bytes_max = 2 * 2 * 64 * 2048,
79 .period_bytes_min = 4096, 79 .period_bytes_min = 4096,
80 .period_bytes_max = 4096, 80 .period_bytes_max = 4096,
81 .periods_min = 6, 81 .periods_min = 6,
82 .periods_max = 64, 82 .periods_max = 64,
83 }; 83 };
84 84
85 static int atmel_ac97c_playback_open(struct sn 85 static int atmel_ac97c_playback_open(struct snd_pcm_substream *substream)
86 { 86 {
87 struct atmel_ac97c *chip = snd_pcm_sub 87 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
88 struct snd_pcm_runtime *runtime = subs 88 struct snd_pcm_runtime *runtime = substream->runtime;
89 89
90 mutex_lock(&opened_mutex); 90 mutex_lock(&opened_mutex);
91 chip->opened++; 91 chip->opened++;
92 runtime->hw = atmel_ac97c_hw; 92 runtime->hw = atmel_ac97c_hw;
93 if (chip->cur_rate) { 93 if (chip->cur_rate) {
94 runtime->hw.rate_min = chip->c 94 runtime->hw.rate_min = chip->cur_rate;
95 runtime->hw.rate_max = chip->c 95 runtime->hw.rate_max = chip->cur_rate;
96 } 96 }
97 if (chip->cur_format) 97 if (chip->cur_format)
98 runtime->hw.formats = pcm_form 98 runtime->hw.formats = pcm_format_to_bits(chip->cur_format);
99 mutex_unlock(&opened_mutex); 99 mutex_unlock(&opened_mutex);
100 chip->playback_substream = substream; 100 chip->playback_substream = substream;
101 return 0; 101 return 0;
102 } 102 }
103 103
104 static int atmel_ac97c_capture_open(struct snd 104 static int atmel_ac97c_capture_open(struct snd_pcm_substream *substream)
105 { 105 {
106 struct atmel_ac97c *chip = snd_pcm_sub 106 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
107 struct snd_pcm_runtime *runtime = subs 107 struct snd_pcm_runtime *runtime = substream->runtime;
108 108
109 mutex_lock(&opened_mutex); 109 mutex_lock(&opened_mutex);
110 chip->opened++; 110 chip->opened++;
111 runtime->hw = atmel_ac97c_hw; 111 runtime->hw = atmel_ac97c_hw;
112 if (chip->cur_rate) { 112 if (chip->cur_rate) {
113 runtime->hw.rate_min = chip->c 113 runtime->hw.rate_min = chip->cur_rate;
114 runtime->hw.rate_max = chip->c 114 runtime->hw.rate_max = chip->cur_rate;
115 } 115 }
116 if (chip->cur_format) 116 if (chip->cur_format)
117 runtime->hw.formats = pcm_form 117 runtime->hw.formats = pcm_format_to_bits(chip->cur_format);
118 mutex_unlock(&opened_mutex); 118 mutex_unlock(&opened_mutex);
119 chip->capture_substream = substream; 119 chip->capture_substream = substream;
120 return 0; 120 return 0;
121 } 121 }
122 122
123 static int atmel_ac97c_playback_close(struct s 123 static int atmel_ac97c_playback_close(struct snd_pcm_substream *substream)
124 { 124 {
125 struct atmel_ac97c *chip = snd_pcm_sub 125 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
126 126
127 mutex_lock(&opened_mutex); 127 mutex_lock(&opened_mutex);
128 chip->opened--; 128 chip->opened--;
129 if (!chip->opened) { 129 if (!chip->opened) {
130 chip->cur_rate = 0; 130 chip->cur_rate = 0;
131 chip->cur_format = 0; 131 chip->cur_format = 0;
132 } 132 }
133 mutex_unlock(&opened_mutex); 133 mutex_unlock(&opened_mutex);
134 134
135 chip->playback_substream = NULL; 135 chip->playback_substream = NULL;
136 136
137 return 0; 137 return 0;
138 } 138 }
139 139
140 static int atmel_ac97c_capture_close(struct sn 140 static int atmel_ac97c_capture_close(struct snd_pcm_substream *substream)
141 { 141 {
142 struct atmel_ac97c *chip = snd_pcm_sub 142 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
143 143
144 mutex_lock(&opened_mutex); 144 mutex_lock(&opened_mutex);
145 chip->opened--; 145 chip->opened--;
146 if (!chip->opened) { 146 if (!chip->opened) {
147 chip->cur_rate = 0; 147 chip->cur_rate = 0;
148 chip->cur_format = 0; 148 chip->cur_format = 0;
149 } 149 }
150 mutex_unlock(&opened_mutex); 150 mutex_unlock(&opened_mutex);
151 151
152 chip->capture_substream = NULL; 152 chip->capture_substream = NULL;
153 153
154 return 0; 154 return 0;
155 } 155 }
156 156
157 static int atmel_ac97c_playback_hw_params(stru 157 static int atmel_ac97c_playback_hw_params(struct snd_pcm_substream *substream,
158 struct snd_pcm_hw_params *hw_p 158 struct snd_pcm_hw_params *hw_params)
159 { 159 {
160 struct atmel_ac97c *chip = snd_pcm_sub 160 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
161 161
162 /* Set restrictions to params. */ 162 /* Set restrictions to params. */
163 mutex_lock(&opened_mutex); 163 mutex_lock(&opened_mutex);
164 chip->cur_rate = params_rate(hw_params 164 chip->cur_rate = params_rate(hw_params);
165 chip->cur_format = params_format(hw_pa 165 chip->cur_format = params_format(hw_params);
166 mutex_unlock(&opened_mutex); 166 mutex_unlock(&opened_mutex);
167 167
168 return 0; 168 return 0;
169 } 169 }
170 170
171 static int atmel_ac97c_capture_hw_params(struc 171 static int atmel_ac97c_capture_hw_params(struct snd_pcm_substream *substream,
172 struct snd_pcm_hw_params *hw_p 172 struct snd_pcm_hw_params *hw_params)
173 { 173 {
174 struct atmel_ac97c *chip = snd_pcm_sub 174 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
175 175
176 /* Set restrictions to params. */ 176 /* Set restrictions to params. */
177 mutex_lock(&opened_mutex); 177 mutex_lock(&opened_mutex);
178 chip->cur_rate = params_rate(hw_params 178 chip->cur_rate = params_rate(hw_params);
179 chip->cur_format = params_format(hw_pa 179 chip->cur_format = params_format(hw_params);
180 mutex_unlock(&opened_mutex); 180 mutex_unlock(&opened_mutex);
181 181
182 return 0; 182 return 0;
183 } 183 }
184 184
185 static int atmel_ac97c_playback_prepare(struct 185 static int atmel_ac97c_playback_prepare(struct snd_pcm_substream *substream)
186 { 186 {
187 struct atmel_ac97c *chip = snd_pcm_sub 187 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
188 struct snd_pcm_runtime *runtime = subs 188 struct snd_pcm_runtime *runtime = substream->runtime;
189 int block_size = frames_to_bytes(runti 189 int block_size = frames_to_bytes(runtime, runtime->period_size);
190 unsigned long word = ac97c_readl(chip, 190 unsigned long word = ac97c_readl(chip, OCA);
191 int retval; 191 int retval;
192 192
193 chip->playback_period = 0; 193 chip->playback_period = 0;
194 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC 194 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
195 195
196 /* assign channels to AC97C channel A 196 /* assign channels to AC97C channel A */
197 switch (runtime->channels) { 197 switch (runtime->channels) {
198 case 1: 198 case 1:
199 word |= AC97C_CH_ASSIGN(PCM_LE 199 word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
200 break; 200 break;
201 case 2: 201 case 2:
202 word |= AC97C_CH_ASSIGN(PCM_LE 202 word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
203 | AC97C_CH_ASSIGN(PCM_ 203 | AC97C_CH_ASSIGN(PCM_RIGHT, A);
204 break; 204 break;
205 default: 205 default:
206 /* TODO: support more than two 206 /* TODO: support more than two channels */
207 return -EINVAL; 207 return -EINVAL;
208 } 208 }
209 ac97c_writel(chip, OCA, word); 209 ac97c_writel(chip, OCA, word);
210 210
211 /* configure sample format and size */ 211 /* configure sample format and size */
212 word = ac97c_readl(chip, CAMR); 212 word = ac97c_readl(chip, CAMR);
213 if (chip->opened <= 1) 213 if (chip->opened <= 1)
214 word = AC97C_CMR_DMAEN | AC97C 214 word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
215 else 215 else
216 word |= AC97C_CMR_DMAEN | AC97 216 word |= AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
217 217
218 switch (runtime->format) { 218 switch (runtime->format) {
219 case SNDRV_PCM_FORMAT_S16_LE: 219 case SNDRV_PCM_FORMAT_S16_LE:
220 break; 220 break;
221 case SNDRV_PCM_FORMAT_S16_BE: 221 case SNDRV_PCM_FORMAT_S16_BE:
222 word &= ~(AC97C_CMR_CEM_LITTLE 222 word &= ~(AC97C_CMR_CEM_LITTLE);
223 break; 223 break;
224 default: 224 default:
225 word = ac97c_readl(chip, OCA); 225 word = ac97c_readl(chip, OCA);
226 word &= ~(AC97C_CH_MASK(PCM_LE 226 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
227 ac97c_writel(chip, OCA, word); 227 ac97c_writel(chip, OCA, word);
228 return -EINVAL; 228 return -EINVAL;
229 } 229 }
230 230
231 /* Enable underrun interrupt on channe 231 /* Enable underrun interrupt on channel A */
232 word |= AC97C_CSR_UNRUN; 232 word |= AC97C_CSR_UNRUN;
233 233
234 ac97c_writel(chip, CAMR, word); 234 ac97c_writel(chip, CAMR, word);
235 235
236 /* Enable channel A event interrupt */ 236 /* Enable channel A event interrupt */
237 word = ac97c_readl(chip, IMR); 237 word = ac97c_readl(chip, IMR);
238 word |= AC97C_SR_CAEVT; 238 word |= AC97C_SR_CAEVT;
239 ac97c_writel(chip, IER, word); 239 ac97c_writel(chip, IER, word);
240 240
241 /* set variable rate if needed */ 241 /* set variable rate if needed */
242 if (runtime->rate != 48000) { 242 if (runtime->rate != 48000) {
243 word = ac97c_readl(chip, MR); 243 word = ac97c_readl(chip, MR);
244 word |= AC97C_MR_VRA; 244 word |= AC97C_MR_VRA;
245 ac97c_writel(chip, MR, word); 245 ac97c_writel(chip, MR, word);
246 } else { 246 } else {
247 word = ac97c_readl(chip, MR); 247 word = ac97c_readl(chip, MR);
248 word &= ~(AC97C_MR_VRA); 248 word &= ~(AC97C_MR_VRA);
249 ac97c_writel(chip, MR, word); 249 ac97c_writel(chip, MR, word);
250 } 250 }
251 251
252 retval = snd_ac97_set_rate(chip->ac97, 252 retval = snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
253 runtime->rate); 253 runtime->rate);
254 if (retval) 254 if (retval)
255 dev_dbg(&chip->pdev->dev, "cou 255 dev_dbg(&chip->pdev->dev, "could not set rate %d Hz\n",
256 runtime->rate) 256 runtime->rate);
257 257
258 /* Initialize and start the PDC */ 258 /* Initialize and start the PDC */
259 writel(runtime->dma_addr, chip->regs + 259 writel(runtime->dma_addr, chip->regs + ATMEL_PDC_TPR);
260 writel(block_size / 2, chip->regs + AT 260 writel(block_size / 2, chip->regs + ATMEL_PDC_TCR);
261 writel(runtime->dma_addr + block_size, 261 writel(runtime->dma_addr + block_size, chip->regs + ATMEL_PDC_TNPR);
262 writel(block_size / 2, chip->regs + AT 262 writel(block_size / 2, chip->regs + ATMEL_PDC_TNCR);
263 263
264 return retval; 264 return retval;
265 } 265 }
266 266
267 static int atmel_ac97c_capture_prepare(struct 267 static int atmel_ac97c_capture_prepare(struct snd_pcm_substream *substream)
268 { 268 {
269 struct atmel_ac97c *chip = snd_pcm_sub 269 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
270 struct snd_pcm_runtime *runtime = subs 270 struct snd_pcm_runtime *runtime = substream->runtime;
271 int block_size = frames_to_bytes(runti 271 int block_size = frames_to_bytes(runtime, runtime->period_size);
272 unsigned long word = ac97c_readl(chip, 272 unsigned long word = ac97c_readl(chip, ICA);
273 int retval; 273 int retval;
274 274
275 chip->capture_period = 0; 275 chip->capture_period = 0;
276 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC 276 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
277 277
278 /* assign channels to AC97C channel A 278 /* assign channels to AC97C channel A */
279 switch (runtime->channels) { 279 switch (runtime->channels) {
280 case 1: 280 case 1:
281 word |= AC97C_CH_ASSIGN(PCM_LE 281 word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
282 break; 282 break;
283 case 2: 283 case 2:
284 word |= AC97C_CH_ASSIGN(PCM_LE 284 word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
285 | AC97C_CH_ASSIGN(PCM_ 285 | AC97C_CH_ASSIGN(PCM_RIGHT, A);
286 break; 286 break;
287 default: 287 default:
288 /* TODO: support more than two 288 /* TODO: support more than two channels */
289 return -EINVAL; 289 return -EINVAL;
290 } 290 }
291 ac97c_writel(chip, ICA, word); 291 ac97c_writel(chip, ICA, word);
292 292
293 /* configure sample format and size */ 293 /* configure sample format and size */
294 word = ac97c_readl(chip, CAMR); 294 word = ac97c_readl(chip, CAMR);
295 if (chip->opened <= 1) 295 if (chip->opened <= 1)
296 word = AC97C_CMR_DMAEN | AC97C 296 word = AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
297 else 297 else
298 word |= AC97C_CMR_DMAEN | AC97 298 word |= AC97C_CMR_DMAEN | AC97C_CMR_SIZE_16;
299 299
300 switch (runtime->format) { 300 switch (runtime->format) {
301 case SNDRV_PCM_FORMAT_S16_LE: 301 case SNDRV_PCM_FORMAT_S16_LE:
302 break; 302 break;
303 case SNDRV_PCM_FORMAT_S16_BE: 303 case SNDRV_PCM_FORMAT_S16_BE:
304 word &= ~(AC97C_CMR_CEM_LITTLE 304 word &= ~(AC97C_CMR_CEM_LITTLE);
305 break; 305 break;
306 default: 306 default:
307 word = ac97c_readl(chip, ICA); 307 word = ac97c_readl(chip, ICA);
308 word &= ~(AC97C_CH_MASK(PCM_LE 308 word &= ~(AC97C_CH_MASK(PCM_LEFT) | AC97C_CH_MASK(PCM_RIGHT));
309 ac97c_writel(chip, ICA, word); 309 ac97c_writel(chip, ICA, word);
310 return -EINVAL; 310 return -EINVAL;
311 } 311 }
312 312
313 /* Enable overrun interrupt on channel 313 /* Enable overrun interrupt on channel A */
314 word |= AC97C_CSR_OVRUN; 314 word |= AC97C_CSR_OVRUN;
315 315
316 ac97c_writel(chip, CAMR, word); 316 ac97c_writel(chip, CAMR, word);
317 317
318 /* Enable channel A event interrupt */ 318 /* Enable channel A event interrupt */
319 word = ac97c_readl(chip, IMR); 319 word = ac97c_readl(chip, IMR);
320 word |= AC97C_SR_CAEVT; 320 word |= AC97C_SR_CAEVT;
321 ac97c_writel(chip, IER, word); 321 ac97c_writel(chip, IER, word);
322 322
323 /* set variable rate if needed */ 323 /* set variable rate if needed */
324 if (runtime->rate != 48000) { 324 if (runtime->rate != 48000) {
325 word = ac97c_readl(chip, MR); 325 word = ac97c_readl(chip, MR);
326 word |= AC97C_MR_VRA; 326 word |= AC97C_MR_VRA;
327 ac97c_writel(chip, MR, word); 327 ac97c_writel(chip, MR, word);
328 } else { 328 } else {
329 word = ac97c_readl(chip, MR); 329 word = ac97c_readl(chip, MR);
330 word &= ~(AC97C_MR_VRA); 330 word &= ~(AC97C_MR_VRA);
331 ac97c_writel(chip, MR, word); 331 ac97c_writel(chip, MR, word);
332 } 332 }
333 333
334 retval = snd_ac97_set_rate(chip->ac97, 334 retval = snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE,
335 runtime->rate); 335 runtime->rate);
336 if (retval) 336 if (retval)
337 dev_dbg(&chip->pdev->dev, "cou 337 dev_dbg(&chip->pdev->dev, "could not set rate %d Hz\n",
338 runtime->rate) 338 runtime->rate);
339 339
340 /* Initialize and start the PDC */ 340 /* Initialize and start the PDC */
341 writel(runtime->dma_addr, chip->regs + 341 writel(runtime->dma_addr, chip->regs + ATMEL_PDC_RPR);
342 writel(block_size / 2, chip->regs + AT 342 writel(block_size / 2, chip->regs + ATMEL_PDC_RCR);
343 writel(runtime->dma_addr + block_size, 343 writel(runtime->dma_addr + block_size, chip->regs + ATMEL_PDC_RNPR);
344 writel(block_size / 2, chip->regs + AT 344 writel(block_size / 2, chip->regs + ATMEL_PDC_RNCR);
345 345
346 return retval; 346 return retval;
347 } 347 }
348 348
349 static int 349 static int
350 atmel_ac97c_playback_trigger(struct snd_pcm_su 350 atmel_ac97c_playback_trigger(struct snd_pcm_substream *substream, int cmd)
351 { 351 {
352 struct atmel_ac97c *chip = snd_pcm_sub 352 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
353 unsigned long camr, ptcr = 0; 353 unsigned long camr, ptcr = 0;
354 354
355 camr = ac97c_readl(chip, CAMR); 355 camr = ac97c_readl(chip, CAMR);
356 356
357 switch (cmd) { 357 switch (cmd) {
358 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 358 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
359 case SNDRV_PCM_TRIGGER_RESUME: 359 case SNDRV_PCM_TRIGGER_RESUME:
360 case SNDRV_PCM_TRIGGER_START: 360 case SNDRV_PCM_TRIGGER_START:
361 ptcr = ATMEL_PDC_TXTEN; 361 ptcr = ATMEL_PDC_TXTEN;
362 camr |= AC97C_CMR_CENA | AC97C 362 camr |= AC97C_CMR_CENA | AC97C_CSR_ENDTX;
363 break; 363 break;
364 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 364 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
365 case SNDRV_PCM_TRIGGER_SUSPEND: 365 case SNDRV_PCM_TRIGGER_SUSPEND:
366 case SNDRV_PCM_TRIGGER_STOP: 366 case SNDRV_PCM_TRIGGER_STOP:
367 ptcr |= ATMEL_PDC_TXTDIS; 367 ptcr |= ATMEL_PDC_TXTDIS;
368 if (chip->opened <= 1) 368 if (chip->opened <= 1)
369 camr &= ~AC97C_CMR_CEN 369 camr &= ~AC97C_CMR_CENA;
370 break; 370 break;
371 default: 371 default:
372 return -EINVAL; 372 return -EINVAL;
373 } 373 }
374 374
375 ac97c_writel(chip, CAMR, camr); 375 ac97c_writel(chip, CAMR, camr);
376 writel(ptcr, chip->regs + ATMEL_PDC_PT 376 writel(ptcr, chip->regs + ATMEL_PDC_PTCR);
377 return 0; 377 return 0;
378 } 378 }
379 379
380 static int 380 static int
381 atmel_ac97c_capture_trigger(struct snd_pcm_sub 381 atmel_ac97c_capture_trigger(struct snd_pcm_substream *substream, int cmd)
382 { 382 {
383 struct atmel_ac97c *chip = snd_pcm_sub 383 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
384 unsigned long camr, ptcr = 0; 384 unsigned long camr, ptcr = 0;
385 385
386 camr = ac97c_readl(chip, CAMR); 386 camr = ac97c_readl(chip, CAMR);
387 ptcr = readl(chip->regs + ATMEL_PDC_PT 387 ptcr = readl(chip->regs + ATMEL_PDC_PTSR);
388 388
389 switch (cmd) { 389 switch (cmd) {
390 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 390 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
391 case SNDRV_PCM_TRIGGER_RESUME: 391 case SNDRV_PCM_TRIGGER_RESUME:
392 case SNDRV_PCM_TRIGGER_START: 392 case SNDRV_PCM_TRIGGER_START:
393 ptcr = ATMEL_PDC_RXTEN; 393 ptcr = ATMEL_PDC_RXTEN;
394 camr |= AC97C_CMR_CENA | AC97C 394 camr |= AC97C_CMR_CENA | AC97C_CSR_ENDRX;
395 break; 395 break;
396 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 396 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
397 case SNDRV_PCM_TRIGGER_SUSPEND: 397 case SNDRV_PCM_TRIGGER_SUSPEND:
398 case SNDRV_PCM_TRIGGER_STOP: 398 case SNDRV_PCM_TRIGGER_STOP:
399 ptcr |= ATMEL_PDC_RXTDIS; 399 ptcr |= ATMEL_PDC_RXTDIS;
400 if (chip->opened <= 1) 400 if (chip->opened <= 1)
401 camr &= ~AC97C_CMR_CEN 401 camr &= ~AC97C_CMR_CENA;
402 break; 402 break;
403 default: 403 default:
404 return -EINVAL; 404 return -EINVAL;
405 } 405 }
406 406
407 ac97c_writel(chip, CAMR, camr); 407 ac97c_writel(chip, CAMR, camr);
408 writel(ptcr, chip->regs + ATMEL_PDC_PT 408 writel(ptcr, chip->regs + ATMEL_PDC_PTCR);
409 return 0; 409 return 0;
410 } 410 }
411 411
412 static snd_pcm_uframes_t 412 static snd_pcm_uframes_t
413 atmel_ac97c_playback_pointer(struct snd_pcm_su 413 atmel_ac97c_playback_pointer(struct snd_pcm_substream *substream)
414 { 414 {
415 struct atmel_ac97c *chip = snd_pc 415 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
416 struct snd_pcm_runtime *runtime = sub 416 struct snd_pcm_runtime *runtime = substream->runtime;
417 snd_pcm_uframes_t frames; 417 snd_pcm_uframes_t frames;
418 unsigned long bytes; 418 unsigned long bytes;
419 419
420 bytes = readl(chip->regs + ATMEL_PDC_T 420 bytes = readl(chip->regs + ATMEL_PDC_TPR);
421 bytes -= runtime->dma_addr; 421 bytes -= runtime->dma_addr;
422 422
423 frames = bytes_to_frames(runtime, byte 423 frames = bytes_to_frames(runtime, bytes);
424 if (frames >= runtime->buffer_size) 424 if (frames >= runtime->buffer_size)
425 frames -= runtime->buffer_size 425 frames -= runtime->buffer_size;
426 return frames; 426 return frames;
427 } 427 }
428 428
429 static snd_pcm_uframes_t 429 static snd_pcm_uframes_t
430 atmel_ac97c_capture_pointer(struct snd_pcm_sub 430 atmel_ac97c_capture_pointer(struct snd_pcm_substream *substream)
431 { 431 {
432 struct atmel_ac97c *chip = snd_pc 432 struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
433 struct snd_pcm_runtime *runtime = sub 433 struct snd_pcm_runtime *runtime = substream->runtime;
434 snd_pcm_uframes_t frames; 434 snd_pcm_uframes_t frames;
435 unsigned long bytes; 435 unsigned long bytes;
436 436
437 bytes = readl(chip->regs + ATMEL_PDC_R 437 bytes = readl(chip->regs + ATMEL_PDC_RPR);
438 bytes -= runtime->dma_addr; 438 bytes -= runtime->dma_addr;
439 439
440 frames = bytes_to_frames(runtime, byte 440 frames = bytes_to_frames(runtime, bytes);
441 if (frames >= runtime->buffer_size) 441 if (frames >= runtime->buffer_size)
442 frames -= runtime->buffer_size 442 frames -= runtime->buffer_size;
443 return frames; 443 return frames;
444 } 444 }
445 445
446 static const struct snd_pcm_ops atmel_ac97_pla 446 static const struct snd_pcm_ops atmel_ac97_playback_ops = {
447 .open = atmel_ac97c_playback 447 .open = atmel_ac97c_playback_open,
448 .close = atmel_ac97c_playback 448 .close = atmel_ac97c_playback_close,
449 .hw_params = atmel_ac97c_playback 449 .hw_params = atmel_ac97c_playback_hw_params,
450 .prepare = atmel_ac97c_playback 450 .prepare = atmel_ac97c_playback_prepare,
451 .trigger = atmel_ac97c_playback 451 .trigger = atmel_ac97c_playback_trigger,
452 .pointer = atmel_ac97c_playback 452 .pointer = atmel_ac97c_playback_pointer,
453 }; 453 };
454 454
455 static const struct snd_pcm_ops atmel_ac97_cap 455 static const struct snd_pcm_ops atmel_ac97_capture_ops = {
456 .open = atmel_ac97c_capture_ 456 .open = atmel_ac97c_capture_open,
457 .close = atmel_ac97c_capture_ 457 .close = atmel_ac97c_capture_close,
458 .hw_params = atmel_ac97c_capture_ 458 .hw_params = atmel_ac97c_capture_hw_params,
459 .prepare = atmel_ac97c_capture_ 459 .prepare = atmel_ac97c_capture_prepare,
460 .trigger = atmel_ac97c_capture_ 460 .trigger = atmel_ac97c_capture_trigger,
461 .pointer = atmel_ac97c_capture_ 461 .pointer = atmel_ac97c_capture_pointer,
462 }; 462 };
463 463
464 static irqreturn_t atmel_ac97c_interrupt(int i 464 static irqreturn_t atmel_ac97c_interrupt(int irq, void *dev)
465 { 465 {
466 struct atmel_ac97c *chip = (stru 466 struct atmel_ac97c *chip = (struct atmel_ac97c *)dev;
467 irqreturn_t retval = IRQ_N 467 irqreturn_t retval = IRQ_NONE;
468 u32 sr = ac97c 468 u32 sr = ac97c_readl(chip, SR);
469 u32 casr = ac97c 469 u32 casr = ac97c_readl(chip, CASR);
470 u32 cosr = ac97c 470 u32 cosr = ac97c_readl(chip, COSR);
471 u32 camr = ac97c 471 u32 camr = ac97c_readl(chip, CAMR);
472 472
473 if (sr & AC97C_SR_CAEVT) { 473 if (sr & AC97C_SR_CAEVT) {
474 struct snd_pcm_runtime *runtim 474 struct snd_pcm_runtime *runtime;
475 int offset, next_period, block 475 int offset, next_period, block_size;
476 dev_dbg(&chip->pdev->dev, "cha 476 dev_dbg(&chip->pdev->dev, "channel A event%s%s%s%s%s%s\n",
477 (casr & AC97C_CSR_OVRU 477 (casr & AC97C_CSR_OVRUN) ? " OVRUN" : "",
478 (casr & AC97C_CSR_RXRD 478 (casr & AC97C_CSR_RXRDY) ? " RXRDY" : "",
479 (casr & AC97C_CSR_UNRU 479 (casr & AC97C_CSR_UNRUN) ? " UNRUN" : "",
480 (casr & AC97C_CSR_TXEM 480 (casr & AC97C_CSR_TXEMPTY) ? " TXEMPTY" : "",
481 (casr & AC97C_CSR_TXRD 481 (casr & AC97C_CSR_TXRDY) ? " TXRDY" : "",
482 !casr 482 !casr ? " NONE" : "");
483 if ((casr & camr) & AC97C_CSR_ 483 if ((casr & camr) & AC97C_CSR_ENDTX) {
484 runtime = chip->playba 484 runtime = chip->playback_substream->runtime;
485 block_size = frames_to 485 block_size = frames_to_bytes(runtime, runtime->period_size);
486 chip->playback_period+ 486 chip->playback_period++;
487 487
488 if (chip->playback_per 488 if (chip->playback_period == runtime->periods)
489 chip->playback 489 chip->playback_period = 0;
490 next_period = chip->pl 490 next_period = chip->playback_period + 1;
491 if (next_period == run 491 if (next_period == runtime->periods)
492 next_period = 492 next_period = 0;
493 493
494 offset = block_size * 494 offset = block_size * next_period;
495 495
496 writel(runtime->dma_ad 496 writel(runtime->dma_addr + offset, chip->regs + ATMEL_PDC_TNPR);
497 writel(block_size / 2, 497 writel(block_size / 2, chip->regs + ATMEL_PDC_TNCR);
498 498
499 snd_pcm_period_elapsed 499 snd_pcm_period_elapsed(chip->playback_substream);
500 } 500 }
501 if ((casr & camr) & AC97C_CSR_ 501 if ((casr & camr) & AC97C_CSR_ENDRX) {
502 runtime = chip->captur 502 runtime = chip->capture_substream->runtime;
503 block_size = frames_to 503 block_size = frames_to_bytes(runtime, runtime->period_size);
504 chip->capture_period++ 504 chip->capture_period++;
505 505
506 if (chip->capture_peri 506 if (chip->capture_period == runtime->periods)
507 chip->capture_ 507 chip->capture_period = 0;
508 next_period = chip->ca 508 next_period = chip->capture_period + 1;
509 if (next_period == run 509 if (next_period == runtime->periods)
510 next_period = 510 next_period = 0;
511 511
512 offset = block_size * 512 offset = block_size * next_period;
513 513
514 writel(runtime->dma_ad 514 writel(runtime->dma_addr + offset, chip->regs + ATMEL_PDC_RNPR);
515 writel(block_size / 2, 515 writel(block_size / 2, chip->regs + ATMEL_PDC_RNCR);
516 snd_pcm_period_elapsed 516 snd_pcm_period_elapsed(chip->capture_substream);
517 } 517 }
518 retval = IRQ_HANDLED; 518 retval = IRQ_HANDLED;
519 } 519 }
520 520
521 if (sr & AC97C_SR_COEVT) { 521 if (sr & AC97C_SR_COEVT) {
522 dev_info(&chip->pdev->dev, "co 522 dev_info(&chip->pdev->dev, "codec channel event%s%s%s%s%s\n",
523 (cosr & AC97C_CSR_OVR 523 (cosr & AC97C_CSR_OVRUN) ? " OVRUN" : "",
524 (cosr & AC97C_CSR_RXR 524 (cosr & AC97C_CSR_RXRDY) ? " RXRDY" : "",
525 (cosr & AC97C_CSR_TXE 525 (cosr & AC97C_CSR_TXEMPTY) ? " TXEMPTY" : "",
526 (cosr & AC97C_CSR_TXR 526 (cosr & AC97C_CSR_TXRDY) ? " TXRDY" : "",
527 !cosr 527 !cosr ? " NONE" : "");
528 retval = IRQ_HANDLED; 528 retval = IRQ_HANDLED;
529 } 529 }
530 530
531 if (retval == IRQ_NONE) { 531 if (retval == IRQ_NONE) {
532 dev_err(&chip->pdev->dev, "spu 532 dev_err(&chip->pdev->dev, "spurious interrupt sr 0x%08x "
533 "casr 0x%08x c 533 "casr 0x%08x cosr 0x%08x\n", sr, casr, cosr);
534 } 534 }
535 535
536 return retval; 536 return retval;
537 } 537 }
538 538
539 static const struct ac97_pcm at91_ac97_pcm_def 539 static const struct ac97_pcm at91_ac97_pcm_defs[] = {
540 /* Playback */ 540 /* Playback */
541 { 541 {
542 .exclusive = 1, 542 .exclusive = 1,
543 .r = { { 543 .r = { {
544 .slots = ((1 << AC97_S 544 .slots = ((1 << AC97_SLOT_PCM_LEFT)
545 | (1 << AC97 545 | (1 << AC97_SLOT_PCM_RIGHT)),
546 } }, 546 } },
547 }, 547 },
548 /* PCM in */ 548 /* PCM in */
549 { 549 {
550 .stream = 1, 550 .stream = 1,
551 .exclusive = 1, 551 .exclusive = 1,
552 .r = { { 552 .r = { {
553 .slots = ((1 << AC97_S 553 .slots = ((1 << AC97_SLOT_PCM_LEFT)
554 | (1 < 554 | (1 << AC97_SLOT_PCM_RIGHT)),
555 } } 555 } }
556 }, 556 },
557 /* Mic in */ 557 /* Mic in */
558 { 558 {
559 .stream = 1, 559 .stream = 1,
560 .exclusive = 1, 560 .exclusive = 1,
561 .r = { { 561 .r = { {
562 .slots = (1<<AC97_SLOT 562 .slots = (1<<AC97_SLOT_MIC),
563 } } 563 } }
564 }, 564 },
565 }; 565 };
566 566
567 static int atmel_ac97c_pcm_new(struct atmel_ac 567 static int atmel_ac97c_pcm_new(struct atmel_ac97c *chip)
568 { 568 {
569 struct snd_pcm *pcm; 569 struct snd_pcm *pcm;
570 struct snd_pcm_hardware hw = atmel_ac9 570 struct snd_pcm_hardware hw = atmel_ac97c_hw;
571 int retval; 571 int retval;
572 572
573 retval = snd_ac97_pcm_assign(chip->ac9 573 retval = snd_ac97_pcm_assign(chip->ac97_bus,
574 ARRAY_SIZ 574 ARRAY_SIZE(at91_ac97_pcm_defs),
575 at91_ac97 575 at91_ac97_pcm_defs);
576 if (retval) 576 if (retval)
577 return retval; 577 return retval;
578 578
579 retval = snd_pcm_new(chip->card, chip- 579 retval = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
580 if (retval) 580 if (retval)
581 return retval; 581 return retval;
582 582
583 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_ 583 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &atmel_ac97_capture_ops);
584 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_ 584 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &atmel_ac97_playback_ops);
585 585
586 snd_pcm_set_managed_buffer_all(pcm, SN 586 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
587 &chip->pdev->dev, hw.p 587 &chip->pdev->dev, hw.periods_min * hw.period_bytes_min,
588 hw.buffer_bytes_max); 588 hw.buffer_bytes_max);
589 589
590 pcm->private_data = chip; 590 pcm->private_data = chip;
591 pcm->info_flags = 0; 591 pcm->info_flags = 0;
592 strcpy(pcm->name, chip->card->shortnam 592 strcpy(pcm->name, chip->card->shortname);
593 chip->pcm = pcm; 593 chip->pcm = pcm;
594 594
595 return 0; 595 return 0;
596 } 596 }
597 597
598 static int atmel_ac97c_mixer_new(struct atmel_ 598 static int atmel_ac97c_mixer_new(struct atmel_ac97c *chip)
599 { 599 {
600 struct snd_ac97_template template; 600 struct snd_ac97_template template;
601 memset(&template, 0, sizeof(template)) 601 memset(&template, 0, sizeof(template));
602 template.private_data = chip; 602 template.private_data = chip;
603 return snd_ac97_mixer(chip->ac97_bus, 603 return snd_ac97_mixer(chip->ac97_bus, &template, &chip->ac97);
604 } 604 }
605 605
606 static void atmel_ac97c_write(struct snd_ac97 606 static void atmel_ac97c_write(struct snd_ac97 *ac97, unsigned short reg,
607 unsigned short val) 607 unsigned short val)
608 { 608 {
609 struct atmel_ac97c *chip = get_chip(ac 609 struct atmel_ac97c *chip = get_chip(ac97);
610 unsigned long word; 610 unsigned long word;
611 int timeout = 40; 611 int timeout = 40;
612 612
613 word = (reg & 0x7f) << 16 | val; 613 word = (reg & 0x7f) << 16 | val;
614 614
615 do { 615 do {
616 if (ac97c_readl(chip, COSR) & 616 if (ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) {
617 ac97c_writel(chip, COT 617 ac97c_writel(chip, COTHR, word);
618 return; 618 return;
619 } 619 }
620 udelay(1); 620 udelay(1);
621 } while (--timeout); 621 } while (--timeout);
622 622
623 dev_dbg(&chip->pdev->dev, "codec write 623 dev_dbg(&chip->pdev->dev, "codec write timeout\n");
624 } 624 }
625 625
626 static unsigned short atmel_ac97c_read(struct 626 static unsigned short atmel_ac97c_read(struct snd_ac97 *ac97,
627 unsigned short reg) 627 unsigned short reg)
628 { 628 {
629 struct atmel_ac97c *chip = get_chip(ac 629 struct atmel_ac97c *chip = get_chip(ac97);
630 unsigned long word; 630 unsigned long word;
631 int timeout = 40; 631 int timeout = 40;
632 int write = 10; 632 int write = 10;
633 633
634 word = (0x80 | (reg & 0x7f)) << 16; 634 word = (0x80 | (reg & 0x7f)) << 16;
635 635
636 if ((ac97c_readl(chip, COSR) & AC97C_C 636 if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0)
637 ac97c_readl(chip, CORHR); 637 ac97c_readl(chip, CORHR);
638 638
639 retry_write: 639 retry_write:
640 timeout = 40; 640 timeout = 40;
641 641
642 do { 642 do {
643 if ((ac97c_readl(chip, COSR) & 643 if ((ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) != 0) {
644 ac97c_writel(chip, COT 644 ac97c_writel(chip, COTHR, word);
645 goto read_reg; 645 goto read_reg;
646 } 646 }
647 udelay(10); 647 udelay(10);
648 } while (--timeout); 648 } while (--timeout);
649 649
650 if (!--write) 650 if (!--write)
651 goto timed_out; 651 goto timed_out;
652 goto retry_write; 652 goto retry_write;
653 653
654 read_reg: 654 read_reg:
655 do { 655 do {
656 if ((ac97c_readl(chip, COSR) & 656 if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0) {
657 unsigned short val = a 657 unsigned short val = ac97c_readl(chip, CORHR);
658 return val; 658 return val;
659 } 659 }
660 udelay(10); 660 udelay(10);
661 } while (--timeout); 661 } while (--timeout);
662 662
663 if (!--write) 663 if (!--write)
664 goto timed_out; 664 goto timed_out;
665 goto retry_write; 665 goto retry_write;
666 666
667 timed_out: 667 timed_out:
668 dev_dbg(&chip->pdev->dev, "codec read 668 dev_dbg(&chip->pdev->dev, "codec read timeout\n");
669 return 0xffff; 669 return 0xffff;
670 } 670 }
671 671
672 static void atmel_ac97c_reset(struct atmel_ac9 672 static void atmel_ac97c_reset(struct atmel_ac97c *chip)
673 { 673 {
674 ac97c_writel(chip, MR, 0); 674 ac97c_writel(chip, MR, 0);
675 ac97c_writel(chip, MR, AC97C_MR_ENA) 675 ac97c_writel(chip, MR, AC97C_MR_ENA);
676 ac97c_writel(chip, CAMR, 0); 676 ac97c_writel(chip, CAMR, 0);
677 ac97c_writel(chip, COMR, 0); 677 ac97c_writel(chip, COMR, 0);
678 678
679 if (!IS_ERR(chip->reset_pin)) { 679 if (!IS_ERR(chip->reset_pin)) {
680 gpiod_set_value(chip->reset_pi 680 gpiod_set_value(chip->reset_pin, 0);
681 /* AC97 v2.2 specifications sa 681 /* AC97 v2.2 specifications says minimum 1 us. */
682 udelay(2); 682 udelay(2);
683 gpiod_set_value(chip->reset_pi 683 gpiod_set_value(chip->reset_pin, 1);
684 } else { 684 } else {
685 ac97c_writel(chip, MR, AC97C_M 685 ac97c_writel(chip, MR, AC97C_MR_WRST | AC97C_MR_ENA);
686 udelay(2); 686 udelay(2);
687 ac97c_writel(chip, MR, AC97C_M 687 ac97c_writel(chip, MR, AC97C_MR_ENA);
688 } 688 }
689 } 689 }
690 690
691 static const struct of_device_id atmel_ac97c_d 691 static const struct of_device_id atmel_ac97c_dt_ids[] = {
692 { .compatible = "atmel,at91sam9263-ac9 692 { .compatible = "atmel,at91sam9263-ac97c", },
693 { } 693 { }
694 }; 694 };
695 MODULE_DEVICE_TABLE(of, atmel_ac97c_dt_ids); 695 MODULE_DEVICE_TABLE(of, atmel_ac97c_dt_ids);
696 696
697 static int atmel_ac97c_probe(struct platform_d 697 static int atmel_ac97c_probe(struct platform_device *pdev)
698 { 698 {
699 struct device *dev = 699 struct device *dev = &pdev->dev;
700 struct snd_card *card; 700 struct snd_card *card;
701 struct atmel_ac97c *chip; 701 struct atmel_ac97c *chip;
702 struct resource *regs; 702 struct resource *regs;
703 struct clk *pclk; 703 struct clk *pclk;
704 static const struct snd_ac97_bus_ops 704 static const struct snd_ac97_bus_ops ops = {
705 .write = atmel_ac97c_write, 705 .write = atmel_ac97c_write,
706 .read = atmel_ac97c_read, 706 .read = atmel_ac97c_read,
707 }; 707 };
708 int retval 708 int retval;
709 int irq; 709 int irq;
710 710
711 regs = platform_get_resource(pdev, IOR 711 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
712 if (!regs) { 712 if (!regs) {
713 dev_dbg(&pdev->dev, "no memory 713 dev_dbg(&pdev->dev, "no memory resource\n");
714 return -ENXIO; 714 return -ENXIO;
715 } 715 }
716 716
717 irq = platform_get_irq(pdev, 0); 717 irq = platform_get_irq(pdev, 0);
718 if (irq < 0) { 718 if (irq < 0) {
719 dev_dbg(&pdev->dev, "could not 719 dev_dbg(&pdev->dev, "could not get irq: %d\n", irq);
720 return irq; 720 return irq;
721 } 721 }
722 722
723 pclk = clk_get(&pdev->dev, "ac97_clk") 723 pclk = clk_get(&pdev->dev, "ac97_clk");
724 if (IS_ERR(pclk)) { 724 if (IS_ERR(pclk)) {
725 dev_dbg(&pdev->dev, "no periph 725 dev_dbg(&pdev->dev, "no peripheral clock\n");
726 return PTR_ERR(pclk); 726 return PTR_ERR(pclk);
727 } 727 }
728 retval = clk_prepare_enable(pclk); 728 retval = clk_prepare_enable(pclk);
729 if (retval) 729 if (retval)
730 goto err_prepare_enable; 730 goto err_prepare_enable;
731 731
732 retval = snd_card_new(&pdev->dev, SNDR 732 retval = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1,
733 SNDRV_DEFAULT_ST 733 SNDRV_DEFAULT_STR1, THIS_MODULE,
734 sizeof(struct at 734 sizeof(struct atmel_ac97c), &card);
735 if (retval) { 735 if (retval) {
736 dev_dbg(&pdev->dev, "could not 736 dev_dbg(&pdev->dev, "could not create sound card device\n");
737 goto err_snd_card_new; 737 goto err_snd_card_new;
738 } 738 }
739 739
740 chip = get_chip(card); 740 chip = get_chip(card);
741 741
742 retval = request_irq(irq, atmel_ac97c_ 742 retval = request_irq(irq, atmel_ac97c_interrupt, 0, "AC97C", chip);
743 if (retval) { 743 if (retval) {
744 dev_dbg(&pdev->dev, "unable to 744 dev_dbg(&pdev->dev, "unable to request irq %d\n", irq);
745 goto err_request_irq; 745 goto err_request_irq;
746 } 746 }
747 chip->irq = irq; 747 chip->irq = irq;
748 748
749 spin_lock_init(&chip->lock); 749 spin_lock_init(&chip->lock);
750 750
751 strcpy(card->driver, "Atmel AC97C"); 751 strcpy(card->driver, "Atmel AC97C");
752 strcpy(card->shortname, "Atmel AC97C") 752 strcpy(card->shortname, "Atmel AC97C");
753 sprintf(card->longname, "Atmel AC97 co 753 sprintf(card->longname, "Atmel AC97 controller");
754 754
755 chip->card = card; 755 chip->card = card;
756 chip->pclk = pclk; 756 chip->pclk = pclk;
757 chip->pdev = pdev; 757 chip->pdev = pdev;
758 chip->regs = ioremap(regs->start, reso 758 chip->regs = ioremap(regs->start, resource_size(regs));
759 759
760 if (!chip->regs) { 760 if (!chip->regs) {
761 dev_dbg(&pdev->dev, "could not 761 dev_dbg(&pdev->dev, "could not remap register memory\n");
762 retval = -ENOMEM; 762 retval = -ENOMEM;
763 goto err_ioremap; 763 goto err_ioremap;
764 } 764 }
765 765
766 chip->reset_pin = devm_gpiod_get_index 766 chip->reset_pin = devm_gpiod_get_index(dev, "ac97", 2, GPIOD_OUT_HIGH);
767 if (IS_ERR(chip->reset_pin)) 767 if (IS_ERR(chip->reset_pin))
768 dev_dbg(dev, "reset pin not av 768 dev_dbg(dev, "reset pin not available\n");
769 769
770 atmel_ac97c_reset(chip); 770 atmel_ac97c_reset(chip);
771 771
772 /* Enable overrun interrupt from codec 772 /* Enable overrun interrupt from codec channel */
773 ac97c_writel(chip, COMR, AC97C_CSR_OVR 773 ac97c_writel(chip, COMR, AC97C_CSR_OVRUN);
774 ac97c_writel(chip, IER, ac97c_readl(ch 774 ac97c_writel(chip, IER, ac97c_readl(chip, IMR) | AC97C_SR_COEVT);
775 775
776 retval = snd_ac97_bus(card, 0, &ops, c 776 retval = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
777 if (retval) { 777 if (retval) {
778 dev_dbg(&pdev->dev, "could not 778 dev_dbg(&pdev->dev, "could not register on ac97 bus\n");
779 goto err_ac97_bus; 779 goto err_ac97_bus;
780 } 780 }
781 781
782 retval = atmel_ac97c_mixer_new(chip); 782 retval = atmel_ac97c_mixer_new(chip);
783 if (retval) { 783 if (retval) {
784 dev_dbg(&pdev->dev, "could not 784 dev_dbg(&pdev->dev, "could not register ac97 mixer\n");
785 goto err_ac97_bus; 785 goto err_ac97_bus;
786 } 786 }
787 787
788 retval = atmel_ac97c_pcm_new(chip); 788 retval = atmel_ac97c_pcm_new(chip);
789 if (retval) { 789 if (retval) {
790 dev_dbg(&pdev->dev, "could not 790 dev_dbg(&pdev->dev, "could not register ac97 pcm device\n");
791 goto err_ac97_bus; 791 goto err_ac97_bus;
792 } 792 }
793 793
794 retval = snd_card_register(card); 794 retval = snd_card_register(card);
795 if (retval) { 795 if (retval) {
796 dev_dbg(&pdev->dev, "could not 796 dev_dbg(&pdev->dev, "could not register sound card\n");
797 goto err_ac97_bus; 797 goto err_ac97_bus;
798 } 798 }
799 799
800 platform_set_drvdata(pdev, card); 800 platform_set_drvdata(pdev, card);
801 801
802 dev_info(&pdev->dev, "Atmel AC97 contr 802 dev_info(&pdev->dev, "Atmel AC97 controller at 0x%p, irq = %d\n",
803 chip->regs, irq); 803 chip->regs, irq);
804 804
805 return 0; 805 return 0;
806 806
807 err_ac97_bus: 807 err_ac97_bus:
808 iounmap(chip->regs); 808 iounmap(chip->regs);
809 err_ioremap: 809 err_ioremap:
810 free_irq(irq, chip); 810 free_irq(irq, chip);
811 err_request_irq: 811 err_request_irq:
812 snd_card_free(card); 812 snd_card_free(card);
813 err_snd_card_new: 813 err_snd_card_new:
814 clk_disable_unprepare(pclk); 814 clk_disable_unprepare(pclk);
815 err_prepare_enable: 815 err_prepare_enable:
816 clk_put(pclk); 816 clk_put(pclk);
817 return retval; 817 return retval;
818 } 818 }
819 819
820 #ifdef CONFIG_PM_SLEEP 820 #ifdef CONFIG_PM_SLEEP
821 static int atmel_ac97c_suspend(struct device * 821 static int atmel_ac97c_suspend(struct device *pdev)
822 { 822 {
823 struct snd_card *card = dev_get_drvdat 823 struct snd_card *card = dev_get_drvdata(pdev);
824 struct atmel_ac97c *chip = card->priva 824 struct atmel_ac97c *chip = card->private_data;
825 825
826 clk_disable_unprepare(chip->pclk); 826 clk_disable_unprepare(chip->pclk);
827 return 0; 827 return 0;
828 } 828 }
829 829
830 static int atmel_ac97c_resume(struct device *p 830 static int atmel_ac97c_resume(struct device *pdev)
831 { 831 {
832 struct snd_card *card = dev_get_drvdat 832 struct snd_card *card = dev_get_drvdata(pdev);
833 struct atmel_ac97c *chip = card->priva 833 struct atmel_ac97c *chip = card->private_data;
834 int ret = clk_prepare_enable(chip->pcl 834 int ret = clk_prepare_enable(chip->pclk);
835 835
836 return ret; 836 return ret;
837 } 837 }
838 838
839 static SIMPLE_DEV_PM_OPS(atmel_ac97c_pm, atmel 839 static SIMPLE_DEV_PM_OPS(atmel_ac97c_pm, atmel_ac97c_suspend, atmel_ac97c_resume);
840 #define ATMEL_AC97C_PM_OPS &atmel_ac97c_p 840 #define ATMEL_AC97C_PM_OPS &atmel_ac97c_pm
841 #else 841 #else
842 #define ATMEL_AC97C_PM_OPS NULL 842 #define ATMEL_AC97C_PM_OPS NULL
843 #endif 843 #endif
844 844
845 static void atmel_ac97c_remove(struct platform 845 static void atmel_ac97c_remove(struct platform_device *pdev)
846 { 846 {
847 struct snd_card *card = platform_get_d 847 struct snd_card *card = platform_get_drvdata(pdev);
848 struct atmel_ac97c *chip = get_chip(ca 848 struct atmel_ac97c *chip = get_chip(card);
849 849
850 ac97c_writel(chip, CAMR, 0); 850 ac97c_writel(chip, CAMR, 0);
851 ac97c_writel(chip, COMR, 0); 851 ac97c_writel(chip, COMR, 0);
852 ac97c_writel(chip, MR, 0); 852 ac97c_writel(chip, MR, 0);
853 853
854 clk_disable_unprepare(chip->pclk); 854 clk_disable_unprepare(chip->pclk);
855 clk_put(chip->pclk); 855 clk_put(chip->pclk);
856 iounmap(chip->regs); 856 iounmap(chip->regs);
857 free_irq(chip->irq, chip); 857 free_irq(chip->irq, chip);
858 858
859 snd_card_free(card); 859 snd_card_free(card);
860 } 860 }
861 861
862 static struct platform_driver atmel_ac97c_driv 862 static struct platform_driver atmel_ac97c_driver = {
863 .probe = atmel_ac97c_probe, 863 .probe = atmel_ac97c_probe,
864 .remove_new = atmel_ac97c_remove, 864 .remove_new = atmel_ac97c_remove,
865 .driver = { 865 .driver = {
866 .name = "atmel_ac97c", 866 .name = "atmel_ac97c",
867 .pm = ATMEL_AC97C_PM_OPS, 867 .pm = ATMEL_AC97C_PM_OPS,
868 .of_match_table = atmel_ac97c_ 868 .of_match_table = atmel_ac97c_dt_ids,
869 }, 869 },
870 }; 870 };
871 module_platform_driver(atmel_ac97c_driver); 871 module_platform_driver(atmel_ac97c_driver);
872 872
873 MODULE_LICENSE("GPL"); 873 MODULE_LICENSE("GPL");
874 MODULE_DESCRIPTION("Driver for Atmel AC97 cont 874 MODULE_DESCRIPTION("Driver for Atmel AC97 controller");
875 MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt 875 MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
876 876
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