Commit | Line | Data |
---|---|---|
f9b95980 | 1 | /* |
2 | * kirkwood-i2s.c | |
3 | * | |
4 | * (c) 2010 Arnaud Patard <apatard@mandriva.com> | |
69737897 | 5 | * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> |
f9b95980 | 6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/mbus.h> | |
19 | #include <linux/delay.h> | |
e919c716 | 20 | #include <linux/clk.h> |
f9b95980 | 21 | #include <sound/pcm.h> |
22 | #include <sound/pcm_params.h> | |
23 | #include <sound/soc.h> | |
c02cecb9 | 24 | #include <linux/platform_data/asoc-kirkwood.h> |
f9b95980 | 25 | #include "kirkwood.h" |
26 | ||
27 | #define DRV_NAME "kirkwood-i2s" | |
28 | ||
29 | #define KIRKWOOD_I2S_RATES \ | |
30 | (SNDRV_PCM_RATE_44100 | \ | |
31 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) | |
32 | #define KIRKWOOD_I2S_FORMATS \ | |
33 | (SNDRV_PCM_FMTBIT_S16_LE | \ | |
34 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
35 | SNDRV_PCM_FMTBIT_S32_LE) | |
36 | ||
f9b95980 | 37 | static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, |
38 | unsigned int fmt) | |
39 | { | |
f0fba2ad | 40 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); |
f9b95980 | 41 | unsigned long mask; |
42 | unsigned long value; | |
43 | ||
44 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
45 | case SND_SOC_DAIFMT_RIGHT_J: | |
46 | mask = KIRKWOOD_I2S_CTL_RJ; | |
47 | break; | |
48 | case SND_SOC_DAIFMT_LEFT_J: | |
49 | mask = KIRKWOOD_I2S_CTL_LJ; | |
50 | break; | |
51 | case SND_SOC_DAIFMT_I2S: | |
52 | mask = KIRKWOOD_I2S_CTL_I2S; | |
53 | break; | |
54 | default: | |
55 | return -EINVAL; | |
56 | } | |
57 | ||
58 | /* | |
59 | * Set same format for playback and record | |
60 | * This avoids some troubles. | |
61 | */ | |
62 | value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); | |
63 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
64 | value |= mask; | |
65 | writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); | |
66 | ||
67 | value = readl(priv->io+KIRKWOOD_I2S_RECCTL); | |
68 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
69 | value |= mask; | |
70 | writel(value, priv->io+KIRKWOOD_I2S_RECCTL); | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
75 | static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) | |
76 | { | |
77 | unsigned long value; | |
78 | ||
79 | value = KIRKWOOD_DCO_CTL_OFFSET_0; | |
80 | switch (rate) { | |
81 | default: | |
82 | case 44100: | |
83 | value |= KIRKWOOD_DCO_CTL_FREQ_11; | |
84 | break; | |
85 | case 48000: | |
86 | value |= KIRKWOOD_DCO_CTL_FREQ_12; | |
87 | break; | |
88 | case 96000: | |
89 | value |= KIRKWOOD_DCO_CTL_FREQ_24; | |
90 | break; | |
91 | } | |
92 | writel(value, io + KIRKWOOD_DCO_CTL); | |
93 | ||
94 | /* wait for dco locked */ | |
95 | do { | |
96 | cpu_relax(); | |
97 | value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); | |
98 | value &= KIRKWOOD_DCO_SPCR_STATUS; | |
99 | } while (value == 0); | |
100 | } | |
101 | ||
f0fba2ad LG |
102 | static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, |
103 | struct snd_soc_dai *dai) | |
104 | { | |
105 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); | |
106 | ||
107 | snd_soc_dai_set_dma_data(dai, substream, priv); | |
108 | return 0; | |
109 | } | |
110 | ||
f9b95980 | 111 | static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, |
112 | struct snd_pcm_hw_params *params, | |
113 | struct snd_soc_dai *dai) | |
114 | { | |
f0fba2ad | 115 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 116 | unsigned int i2s_reg, reg; |
117 | unsigned long i2s_value, value; | |
118 | ||
119 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
120 | i2s_reg = KIRKWOOD_I2S_PLAYCTL; | |
121 | reg = KIRKWOOD_PLAYCTL; | |
122 | } else { | |
123 | i2s_reg = KIRKWOOD_I2S_RECCTL; | |
124 | reg = KIRKWOOD_RECCTL; | |
125 | } | |
126 | ||
127 | /* set dco conf */ | |
128 | kirkwood_set_dco(priv->io, params_rate(params)); | |
129 | ||
130 | i2s_value = readl(priv->io+i2s_reg); | |
131 | i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; | |
132 | ||
133 | value = readl(priv->io+reg); | |
134 | value &= ~KIRKWOOD_PLAYCTL_SIZE_MASK; | |
135 | ||
136 | /* | |
137 | * Size settings in play/rec i2s control regs and play/rec control | |
138 | * regs must be the same. | |
139 | */ | |
140 | switch (params_format(params)) { | |
141 | case SNDRV_PCM_FORMAT_S16_LE: | |
142 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; | |
143 | value |= KIRKWOOD_PLAYCTL_SIZE_16_C; | |
144 | break; | |
145 | /* | |
146 | * doesn't work... S20_3LE != kirkwood 20bit format ? | |
147 | * | |
148 | case SNDRV_PCM_FORMAT_S20_3LE: | |
149 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; | |
150 | value |= KIRKWOOD_PLAYCTL_SIZE_20; | |
151 | break; | |
152 | */ | |
153 | case SNDRV_PCM_FORMAT_S24_LE: | |
154 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; | |
155 | value |= KIRKWOOD_PLAYCTL_SIZE_24; | |
156 | break; | |
157 | case SNDRV_PCM_FORMAT_S32_LE: | |
158 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; | |
159 | value |= KIRKWOOD_PLAYCTL_SIZE_32; | |
160 | break; | |
161 | default: | |
162 | return -EINVAL; | |
163 | } | |
dfe4c936 | 164 | |
165 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
166 | value &= ~KIRKWOOD_PLAYCTL_MONO_MASK; | |
167 | if (params_channels(params) == 1) | |
168 | value |= KIRKWOOD_PLAYCTL_MONO_BOTH; | |
169 | else | |
170 | value |= KIRKWOOD_PLAYCTL_MONO_OFF; | |
171 | } | |
172 | ||
f9b95980 | 173 | writel(i2s_value, priv->io+i2s_reg); |
174 | writel(value, priv->io+reg); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, | |
180 | int cmd, struct snd_soc_dai *dai) | |
181 | { | |
f0fba2ad | 182 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 183 | unsigned long value; |
184 | ||
185 | /* | |
186 | * specs says KIRKWOOD_PLAYCTL must be read 2 times before | |
187 | * changing it. So read 1 time here and 1 later. | |
188 | */ | |
189 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
190 | ||
191 | switch (cmd) { | |
192 | case SNDRV_PCM_TRIGGER_START: | |
193 | /* stop audio, enable interrupts */ | |
194 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
195 | value |= KIRKWOOD_PLAYCTL_PAUSE; | |
196 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
197 | ||
198 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
199 | value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
200 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
201 | ||
202 | /* configure audio & enable i2s playback */ | |
203 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
204 | value &= ~KIRKWOOD_PLAYCTL_BURST_MASK; | |
b424ec95 | 205 | value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
206 | | KIRKWOOD_PLAYCTL_SPDIF_EN); | |
f9b95980 | 207 | |
208 | if (priv->burst == 32) | |
209 | value |= KIRKWOOD_PLAYCTL_BURST_32; | |
210 | else | |
211 | value |= KIRKWOOD_PLAYCTL_BURST_128; | |
212 | value |= KIRKWOOD_PLAYCTL_I2S_EN; | |
213 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
214 | break; | |
215 | ||
216 | case SNDRV_PCM_TRIGGER_STOP: | |
217 | /* stop audio, disable interrupts */ | |
218 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
b424ec95 | 219 | value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
f9b95980 | 220 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
221 | ||
222 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
223 | value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
224 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
225 | ||
226 | /* disable all playbacks */ | |
227 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
228 | value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); | |
229 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
230 | break; | |
231 | ||
232 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
233 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
234 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
b424ec95 | 235 | value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
f9b95980 | 236 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
237 | break; | |
238 | ||
239 | case SNDRV_PCM_TRIGGER_RESUME: | |
240 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
241 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
b424ec95 | 242 | value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); |
f9b95980 | 243 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
244 | break; | |
245 | ||
246 | default: | |
247 | return -EINVAL; | |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, | |
254 | int cmd, struct snd_soc_dai *dai) | |
255 | { | |
f0fba2ad | 256 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 257 | unsigned long value; |
258 | ||
259 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
260 | ||
261 | switch (cmd) { | |
262 | case SNDRV_PCM_TRIGGER_START: | |
263 | /* stop audio, enable interrupts */ | |
264 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
265 | value |= KIRKWOOD_RECCTL_PAUSE; | |
266 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
267 | ||
268 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
269 | value |= KIRKWOOD_INT_CAUSE_REC_BYTES; | |
270 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
271 | ||
272 | /* configure audio & enable i2s record */ | |
273 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
274 | value &= ~KIRKWOOD_RECCTL_BURST_MASK; | |
275 | value &= ~KIRKWOOD_RECCTL_MONO; | |
b424ec95 | 276 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE |
277 | | KIRKWOOD_RECCTL_SPDIF_EN); | |
f9b95980 | 278 | |
279 | if (priv->burst == 32) | |
280 | value |= KIRKWOOD_RECCTL_BURST_32; | |
281 | else | |
282 | value |= KIRKWOOD_RECCTL_BURST_128; | |
283 | value |= KIRKWOOD_RECCTL_I2S_EN; | |
284 | ||
285 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
286 | break; | |
287 | ||
288 | case SNDRV_PCM_TRIGGER_STOP: | |
289 | /* stop audio, disable interrupts */ | |
290 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 291 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 292 | writel(value, priv->io + KIRKWOOD_RECCTL); |
293 | ||
294 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
295 | value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; | |
296 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
297 | ||
298 | /* disable all records */ | |
299 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
300 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
301 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
302 | break; | |
303 | ||
304 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
305 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
306 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 307 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 308 | writel(value, priv->io + KIRKWOOD_RECCTL); |
309 | break; | |
310 | ||
311 | case SNDRV_PCM_TRIGGER_RESUME: | |
312 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
313 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 314 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); |
f9b95980 | 315 | writel(value, priv->io + KIRKWOOD_RECCTL); |
316 | break; | |
317 | ||
318 | default: | |
319 | return -EINVAL; | |
f9b95980 | 320 | } |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, | |
326 | struct snd_soc_dai *dai) | |
327 | { | |
328 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
329 | return kirkwood_i2s_play_trigger(substream, cmd, dai); | |
330 | else | |
331 | return kirkwood_i2s_rec_trigger(substream, cmd, dai); | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
f0fba2ad | 336 | static int kirkwood_i2s_probe(struct snd_soc_dai *dai) |
f9b95980 | 337 | { |
f0fba2ad | 338 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 339 | unsigned long value; |
340 | unsigned int reg_data; | |
341 | ||
342 | /* put system in a "safe" state : */ | |
343 | /* disable audio interrupts */ | |
344 | writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); | |
345 | writel(0, priv->io + KIRKWOOD_INT_MASK); | |
346 | ||
347 | reg_data = readl(priv->io + 0x1200); | |
348 | reg_data &= (~(0x333FF8)); | |
349 | reg_data |= 0x111D18; | |
350 | writel(reg_data, priv->io + 0x1200); | |
351 | ||
352 | msleep(500); | |
353 | ||
354 | reg_data = readl(priv->io + 0x1200); | |
355 | reg_data &= (~(0x333FF8)); | |
356 | reg_data |= 0x111D18; | |
357 | writel(reg_data, priv->io + 0x1200); | |
358 | ||
359 | /* disable playback/record */ | |
360 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
361 | value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); | |
362 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
363 | ||
364 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
365 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
366 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
367 | ||
368 | return 0; | |
369 | ||
370 | } | |
371 | ||
f0fba2ad | 372 | static int kirkwood_i2s_remove(struct snd_soc_dai *dai) |
f9b95980 | 373 | { |
f0fba2ad | 374 | return 0; |
f9b95980 | 375 | } |
376 | ||
85e7652d | 377 | static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { |
f0fba2ad | 378 | .startup = kirkwood_i2s_startup, |
f9b95980 | 379 | .trigger = kirkwood_i2s_trigger, |
380 | .hw_params = kirkwood_i2s_hw_params, | |
381 | .set_fmt = kirkwood_i2s_set_fmt, | |
382 | }; | |
383 | ||
384 | ||
f0fba2ad | 385 | static struct snd_soc_dai_driver kirkwood_i2s_dai = { |
f9b95980 | 386 | .probe = kirkwood_i2s_probe, |
387 | .remove = kirkwood_i2s_remove, | |
388 | .playback = { | |
389 | .channels_min = 1, | |
390 | .channels_max = 2, | |
391 | .rates = KIRKWOOD_I2S_RATES, | |
392 | .formats = KIRKWOOD_I2S_FORMATS,}, | |
393 | .capture = { | |
394 | .channels_min = 1, | |
395 | .channels_max = 2, | |
396 | .rates = KIRKWOOD_I2S_RATES, | |
397 | .formats = KIRKWOOD_I2S_FORMATS,}, | |
398 | .ops = &kirkwood_i2s_dai_ops, | |
399 | }; | |
f9b95980 | 400 | |
401 | static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev) | |
402 | { | |
403 | struct resource *mem; | |
404 | struct kirkwood_asoc_platform_data *data = | |
405 | pdev->dev.platform_data; | |
f0fba2ad | 406 | struct kirkwood_dma_data *priv; |
f9b95980 | 407 | int err; |
408 | ||
409 | priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL); | |
410 | if (!priv) { | |
411 | dev_err(&pdev->dev, "allocation failed\n"); | |
412 | err = -ENOMEM; | |
413 | goto error; | |
414 | } | |
f0fba2ad | 415 | dev_set_drvdata(&pdev->dev, priv); |
f9b95980 | 416 | |
417 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
418 | if (!mem) { | |
419 | dev_err(&pdev->dev, "platform_get_resource failed\n"); | |
420 | err = -ENXIO; | |
421 | goto err_alloc; | |
422 | } | |
423 | ||
424 | priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME); | |
425 | if (!priv->mem) { | |
426 | dev_err(&pdev->dev, "request_mem_region failed\n"); | |
427 | err = -EBUSY; | |
5013951b | 428 | goto err_alloc; |
f9b95980 | 429 | } |
430 | ||
431 | priv->io = ioremap(priv->mem->start, SZ_16K); | |
432 | if (!priv->io) { | |
433 | dev_err(&pdev->dev, "ioremap failed\n"); | |
434 | err = -ENOMEM; | |
435 | goto err_iomem; | |
436 | } | |
437 | ||
438 | priv->irq = platform_get_irq(pdev, 0); | |
439 | if (priv->irq <= 0) { | |
440 | dev_err(&pdev->dev, "platform_get_irq failed\n"); | |
441 | err = -ENXIO; | |
442 | goto err_ioremap; | |
443 | } | |
444 | ||
d4d9820b | 445 | if (!data) { |
f9b95980 | 446 | dev_err(&pdev->dev, "no platform data ?!\n"); |
447 | err = -EINVAL; | |
448 | goto err_ioremap; | |
449 | } | |
450 | ||
f9b95980 | 451 | priv->burst = data->burst; |
452 | ||
e919c716 AL |
453 | priv->clk = clk_get(&pdev->dev, NULL); |
454 | if (IS_ERR(priv->clk)) { | |
455 | dev_err(&pdev->dev, "no clock\n"); | |
456 | err = PTR_ERR(priv->clk); | |
457 | goto err_ioremap; | |
458 | } | |
459 | clk_prepare_enable(priv->clk); | |
460 | ||
baffab28 SB |
461 | err = snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai); |
462 | if (!err) | |
463 | return 0; | |
464 | dev_err(&pdev->dev, "snd_soc_register_dai failed\n"); | |
465 | ||
466 | clk_disable_unprepare(priv->clk); | |
467 | clk_put(priv->clk); | |
f9b95980 | 468 | |
469 | err_ioremap: | |
470 | iounmap(priv->io); | |
471 | err_iomem: | |
472 | release_mem_region(priv->mem->start, SZ_16K); | |
473 | err_alloc: | |
474 | kfree(priv); | |
475 | error: | |
476 | return err; | |
477 | } | |
478 | ||
479 | static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev) | |
480 | { | |
f0fba2ad LG |
481 | struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); |
482 | ||
483 | snd_soc_unregister_dai(&pdev->dev); | |
e919c716 AL |
484 | |
485 | clk_disable_unprepare(priv->clk); | |
486 | clk_put(priv->clk); | |
487 | ||
f0fba2ad LG |
488 | iounmap(priv->io); |
489 | release_mem_region(priv->mem->start, SZ_16K); | |
490 | kfree(priv); | |
491 | ||
f9b95980 | 492 | return 0; |
493 | } | |
494 | ||
495 | static struct platform_driver kirkwood_i2s_driver = { | |
496 | .probe = kirkwood_i2s_dev_probe, | |
48860e40 | 497 | .remove = __devexit_p(kirkwood_i2s_dev_remove), |
f9b95980 | 498 | .driver = { |
499 | .name = DRV_NAME, | |
500 | .owner = THIS_MODULE, | |
501 | }, | |
502 | }; | |
503 | ||
41b10225 | 504 | module_platform_driver(kirkwood_i2s_driver); |
f9b95980 | 505 | |
506 | /* Module information */ | |
69737897 | 507 | MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); |
f9b95980 | 508 | MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); |
509 | MODULE_LICENSE("GPL"); | |
510 | MODULE_ALIAS("platform:kirkwood-i2s"); |