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); | |
2424d458 | 98 | value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK; |
f9b95980 | 99 | } while (value == 0); |
100 | } | |
101 | ||
363589bf RK |
102 | static void kirkwood_set_rate(struct snd_soc_dai *dai, |
103 | struct kirkwood_dma_data *priv, unsigned long rate) | |
104 | { | |
105 | uint32_t clks_ctrl; | |
106 | ||
107 | if (rate == 44100 || rate == 48000 || rate == 96000) { | |
108 | /* use internal dco for supported rates */ | |
109 | dev_dbg(dai->dev, "%s: dco set rate = %lu\n", | |
110 | __func__, rate); | |
111 | kirkwood_set_dco(priv->io, rate); | |
112 | ||
113 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO; | |
114 | } else if (!IS_ERR(priv->extclk)) { | |
115 | /* use optional external clk for other rates */ | |
116 | dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n", | |
117 | __func__, rate, 256 * rate); | |
118 | clk_set_rate(priv->extclk, 256 * rate); | |
119 | ||
120 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK; | |
121 | } | |
122 | writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL); | |
123 | } | |
124 | ||
f0fba2ad LG |
125 | static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, |
126 | struct snd_soc_dai *dai) | |
127 | { | |
128 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); | |
129 | ||
130 | snd_soc_dai_set_dma_data(dai, substream, priv); | |
131 | return 0; | |
132 | } | |
133 | ||
f9b95980 | 134 | static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, |
135 | struct snd_pcm_hw_params *params, | |
136 | struct snd_soc_dai *dai) | |
137 | { | |
f0fba2ad | 138 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 RK |
139 | uint32_t ctl_play, ctl_rec; |
140 | unsigned int i2s_reg; | |
141 | unsigned long i2s_value; | |
f9b95980 | 142 | |
143 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
144 | i2s_reg = KIRKWOOD_I2S_PLAYCTL; | |
f9b95980 | 145 | } else { |
146 | i2s_reg = KIRKWOOD_I2S_RECCTL; | |
f9b95980 | 147 | } |
148 | ||
363589bf | 149 | kirkwood_set_rate(dai, priv, params_rate(params)); |
f9b95980 | 150 | |
151 | i2s_value = readl(priv->io+i2s_reg); | |
152 | i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; | |
153 | ||
f9b95980 | 154 | /* |
155 | * Size settings in play/rec i2s control regs and play/rec control | |
156 | * regs must be the same. | |
157 | */ | |
158 | switch (params_format(params)) { | |
159 | case SNDRV_PCM_FORMAT_S16_LE: | |
160 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; | |
d8d11ba5 RK |
161 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | |
162 | KIRKWOOD_PLAYCTL_I2S_EN; | |
163 | ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | | |
164 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 165 | break; |
166 | /* | |
167 | * doesn't work... S20_3LE != kirkwood 20bit format ? | |
168 | * | |
169 | case SNDRV_PCM_FORMAT_S20_3LE: | |
170 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; | |
d8d11ba5 RK |
171 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | |
172 | KIRKWOOD_PLAYCTL_I2S_EN; | |
173 | ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | | |
174 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 175 | break; |
176 | */ | |
177 | case SNDRV_PCM_FORMAT_S24_LE: | |
178 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; | |
d8d11ba5 RK |
179 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | |
180 | KIRKWOOD_PLAYCTL_I2S_EN; | |
181 | ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | | |
182 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 183 | break; |
184 | case SNDRV_PCM_FORMAT_S32_LE: | |
185 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; | |
d8d11ba5 RK |
186 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | |
187 | KIRKWOOD_PLAYCTL_I2S_EN; | |
188 | ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | | |
189 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 190 | break; |
191 | default: | |
192 | return -EINVAL; | |
193 | } | |
dfe4c936 AP |
194 | |
195 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
dfe4c936 | 196 | if (params_channels(params) == 1) |
d8d11ba5 | 197 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; |
dfe4c936 | 198 | else |
d8d11ba5 RK |
199 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; |
200 | ||
201 | priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | | |
202 | KIRKWOOD_PLAYCTL_I2S_EN | | |
203 | KIRKWOOD_PLAYCTL_SPDIF_EN | | |
204 | KIRKWOOD_PLAYCTL_SIZE_MASK); | |
205 | priv->ctl_play |= ctl_play; | |
206 | } else { | |
207 | priv->ctl_rec &= ~KIRKWOOD_RECCTL_SIZE_MASK; | |
208 | priv->ctl_rec |= ctl_rec; | |
dfe4c936 AP |
209 | } |
210 | ||
f9b95980 | 211 | writel(i2s_value, priv->io+i2s_reg); |
f9b95980 | 212 | |
213 | return 0; | |
214 | } | |
215 | ||
216 | static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, | |
217 | int cmd, struct snd_soc_dai *dai) | |
218 | { | |
f0fba2ad | 219 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
982b604b RK |
220 | uint32_t ctl, value; |
221 | ||
222 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
223 | if (ctl & KIRKWOOD_PLAYCTL_PAUSE) { | |
224 | unsigned timeout = 5000; | |
225 | /* | |
226 | * The Armada510 spec says that if we enter pause mode, the | |
227 | * busy bit must be read back as clear _twice_. Make sure | |
228 | * we respect that otherwise we get DMA underruns. | |
229 | */ | |
230 | do { | |
231 | value = ctl; | |
232 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
233 | if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) | |
234 | break; | |
235 | udelay(1); | |
236 | } while (timeout--); | |
237 | ||
238 | if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) | |
239 | dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", | |
240 | ctl); | |
241 | } | |
f9b95980 | 242 | |
243 | switch (cmd) { | |
244 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
245 | /* configure */ |
246 | ctl = priv->ctl_play; | |
247 | value = ctl & ~(KIRKWOOD_PLAYCTL_I2S_EN | | |
248 | KIRKWOOD_PLAYCTL_SPDIF_EN); | |
249 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
250 | ||
251 | /* enable interrupts */ | |
f9b95980 | 252 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
253 | value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
254 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
255 | ||
d8d11ba5 | 256 | /* enable playback */ |
982b604b | 257 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 258 | break; |
259 | ||
260 | case SNDRV_PCM_TRIGGER_STOP: | |
261 | /* stop audio, disable interrupts */ | |
982b604b RK |
262 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
263 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 264 | |
265 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
266 | value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
267 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
268 | ||
269 | /* disable all playbacks */ | |
982b604b RK |
270 | ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); |
271 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 272 | break; |
273 | ||
274 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
275 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
982b604b RK |
276 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
277 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 278 | break; |
279 | ||
280 | case SNDRV_PCM_TRIGGER_RESUME: | |
281 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
982b604b RK |
282 | ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); |
283 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 284 | break; |
285 | ||
286 | default: | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, | |
294 | int cmd, struct snd_soc_dai *dai) | |
295 | { | |
f0fba2ad | 296 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 | 297 | uint32_t ctl, value; |
f9b95980 | 298 | |
299 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
300 | ||
301 | switch (cmd) { | |
302 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
303 | /* configure */ |
304 | ctl = priv->ctl_rec; | |
305 | value = ctl & ~KIRKWOOD_RECCTL_I2S_EN; | |
306 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
307 | ||
308 | /* enable interrupts */ | |
f9b95980 | 309 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
310 | value |= KIRKWOOD_INT_CAUSE_REC_BYTES; | |
311 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
312 | ||
d8d11ba5 RK |
313 | /* enable record */ |
314 | writel(ctl, priv->io + KIRKWOOD_RECCTL); | |
f9b95980 | 315 | break; |
316 | ||
317 | case SNDRV_PCM_TRIGGER_STOP: | |
318 | /* stop audio, disable interrupts */ | |
319 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 320 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 321 | writel(value, priv->io + KIRKWOOD_RECCTL); |
322 | ||
323 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
324 | value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; | |
325 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
326 | ||
327 | /* disable all records */ | |
328 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
329 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
330 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
331 | break; | |
332 | ||
333 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
334 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
335 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 336 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 337 | writel(value, priv->io + KIRKWOOD_RECCTL); |
338 | break; | |
339 | ||
340 | case SNDRV_PCM_TRIGGER_RESUME: | |
341 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
342 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 343 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); |
f9b95980 | 344 | writel(value, priv->io + KIRKWOOD_RECCTL); |
345 | break; | |
346 | ||
347 | default: | |
348 | return -EINVAL; | |
f9b95980 | 349 | } |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, | |
355 | struct snd_soc_dai *dai) | |
356 | { | |
357 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
358 | return kirkwood_i2s_play_trigger(substream, cmd, dai); | |
359 | else | |
360 | return kirkwood_i2s_rec_trigger(substream, cmd, dai); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
f0fba2ad | 365 | static int kirkwood_i2s_probe(struct snd_soc_dai *dai) |
f9b95980 | 366 | { |
f0fba2ad | 367 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 368 | unsigned long value; |
369 | unsigned int reg_data; | |
370 | ||
371 | /* put system in a "safe" state : */ | |
372 | /* disable audio interrupts */ | |
373 | writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); | |
374 | writel(0, priv->io + KIRKWOOD_INT_MASK); | |
375 | ||
376 | reg_data = readl(priv->io + 0x1200); | |
377 | reg_data &= (~(0x333FF8)); | |
378 | reg_data |= 0x111D18; | |
379 | writel(reg_data, priv->io + 0x1200); | |
380 | ||
381 | msleep(500); | |
382 | ||
383 | reg_data = readl(priv->io + 0x1200); | |
384 | reg_data &= (~(0x333FF8)); | |
385 | reg_data |= 0x111D18; | |
386 | writel(reg_data, priv->io + 0x1200); | |
387 | ||
388 | /* disable playback/record */ | |
389 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
390 | value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); | |
391 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
392 | ||
393 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
394 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
395 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
396 | ||
397 | return 0; | |
398 | ||
399 | } | |
400 | ||
f0fba2ad | 401 | static int kirkwood_i2s_remove(struct snd_soc_dai *dai) |
f9b95980 | 402 | { |
f0fba2ad | 403 | return 0; |
f9b95980 | 404 | } |
405 | ||
85e7652d | 406 | static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { |
f0fba2ad | 407 | .startup = kirkwood_i2s_startup, |
f9b95980 | 408 | .trigger = kirkwood_i2s_trigger, |
409 | .hw_params = kirkwood_i2s_hw_params, | |
410 | .set_fmt = kirkwood_i2s_set_fmt, | |
411 | }; | |
412 | ||
413 | ||
f0fba2ad | 414 | static struct snd_soc_dai_driver kirkwood_i2s_dai = { |
f9b95980 | 415 | .probe = kirkwood_i2s_probe, |
416 | .remove = kirkwood_i2s_remove, | |
417 | .playback = { | |
418 | .channels_min = 1, | |
419 | .channels_max = 2, | |
420 | .rates = KIRKWOOD_I2S_RATES, | |
363589bf RK |
421 | .formats = KIRKWOOD_I2S_FORMATS, |
422 | }, | |
f9b95980 | 423 | .capture = { |
424 | .channels_min = 1, | |
425 | .channels_max = 2, | |
426 | .rates = KIRKWOOD_I2S_RATES, | |
363589bf RK |
427 | .formats = KIRKWOOD_I2S_FORMATS, |
428 | }, | |
429 | .ops = &kirkwood_i2s_dai_ops, | |
430 | }; | |
431 | ||
432 | static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk = { | |
433 | .probe = kirkwood_i2s_probe, | |
434 | .remove = kirkwood_i2s_remove, | |
435 | .playback = { | |
436 | .channels_min = 1, | |
437 | .channels_max = 2, | |
438 | .rates = SNDRV_PCM_RATE_8000_192000 | | |
439 | SNDRV_PCM_RATE_CONTINUOUS | | |
440 | SNDRV_PCM_RATE_KNOT, | |
441 | .formats = KIRKWOOD_I2S_FORMATS, | |
442 | }, | |
443 | .capture = { | |
444 | .channels_min = 1, | |
445 | .channels_max = 2, | |
446 | .rates = SNDRV_PCM_RATE_8000_192000 | | |
447 | SNDRV_PCM_RATE_CONTINUOUS | | |
448 | SNDRV_PCM_RATE_KNOT, | |
449 | .formats = KIRKWOOD_I2S_FORMATS, | |
450 | }, | |
f9b95980 | 451 | .ops = &kirkwood_i2s_dai_ops, |
452 | }; | |
f9b95980 | 453 | |
83d85f53 KM |
454 | static const struct snd_soc_component_driver kirkwood_i2s_component = { |
455 | .name = DRV_NAME, | |
456 | }; | |
457 | ||
34e15fbd | 458 | static int kirkwood_i2s_dev_probe(struct platform_device *pdev) |
f9b95980 | 459 | { |
363589bf RK |
460 | struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data; |
461 | struct snd_soc_dai_driver *soc_dai = &kirkwood_i2s_dai; | |
f0fba2ad | 462 | struct kirkwood_dma_data *priv; |
363589bf | 463 | struct resource *mem; |
f9b95980 | 464 | int err; |
465 | ||
dbc517bf | 466 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
f9b95980 | 467 | if (!priv) { |
468 | dev_err(&pdev->dev, "allocation failed\n"); | |
dbc517bf | 469 | return -ENOMEM; |
f9b95980 | 470 | } |
f0fba2ad | 471 | dev_set_drvdata(&pdev->dev, priv); |
f9b95980 | 472 | |
473 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
b25b5aa0 TR |
474 | priv->io = devm_ioremap_resource(&pdev->dev, mem); |
475 | if (IS_ERR(priv->io)) | |
476 | return PTR_ERR(priv->io); | |
f9b95980 | 477 | |
478 | priv->irq = platform_get_irq(pdev, 0); | |
479 | if (priv->irq <= 0) { | |
480 | dev_err(&pdev->dev, "platform_get_irq failed\n"); | |
dbc517bf | 481 | return -ENXIO; |
f9b95980 | 482 | } |
483 | ||
d4d9820b | 484 | if (!data) { |
f9b95980 | 485 | dev_err(&pdev->dev, "no platform data ?!\n"); |
dbc517bf | 486 | return -EINVAL; |
f9b95980 | 487 | } |
488 | ||
f9b95980 | 489 | priv->burst = data->burst; |
490 | ||
dbc517bf | 491 | priv->clk = devm_clk_get(&pdev->dev, NULL); |
e919c716 AL |
492 | if (IS_ERR(priv->clk)) { |
493 | dev_err(&pdev->dev, "no clock\n"); | |
dbc517bf | 494 | return PTR_ERR(priv->clk); |
e919c716 | 495 | } |
dbc517bf RK |
496 | |
497 | err = clk_prepare_enable(priv->clk); | |
498 | if (err < 0) | |
499 | return err; | |
e919c716 | 500 | |
d8d11ba5 RK |
501 | priv->extclk = clk_get(&pdev->dev, "extclk"); |
502 | if (!IS_ERR(priv->extclk)) { | |
503 | if (priv->extclk == priv->clk) { | |
504 | clk_put(priv->extclk); | |
505 | priv->extclk = ERR_PTR(-EINVAL); | |
506 | } else { | |
507 | dev_info(&pdev->dev, "found external clock\n"); | |
508 | clk_prepare_enable(priv->extclk); | |
509 | soc_dai = &kirkwood_i2s_dai_extclk; | |
510 | } | |
511 | } | |
512 | ||
513 | /* Some sensible defaults - this reflects the powerup values */ | |
514 | priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; | |
515 | priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; | |
516 | ||
517 | /* Select the burst size */ | |
518 | if (data->burst == 32) { | |
519 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; | |
520 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; | |
521 | } else { | |
522 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; | |
523 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; | |
524 | } | |
525 | ||
83d85f53 KM |
526 | err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component, |
527 | soc_dai, 1); | |
baffab28 SB |
528 | if (!err) |
529 | return 0; | |
83d85f53 | 530 | dev_err(&pdev->dev, "snd_soc_register_component failed\n"); |
baffab28 | 531 | |
363589bf RK |
532 | if (!IS_ERR(priv->extclk)) { |
533 | clk_disable_unprepare(priv->extclk); | |
534 | clk_put(priv->extclk); | |
535 | } | |
baffab28 | 536 | clk_disable_unprepare(priv->clk); |
dbc517bf | 537 | |
f9b95980 | 538 | return err; |
539 | } | |
540 | ||
34e15fbd | 541 | static int kirkwood_i2s_dev_remove(struct platform_device *pdev) |
f9b95980 | 542 | { |
f0fba2ad LG |
543 | struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); |
544 | ||
83d85f53 | 545 | snd_soc_unregister_component(&pdev->dev); |
e919c716 | 546 | |
363589bf RK |
547 | if (!IS_ERR(priv->extclk)) { |
548 | clk_disable_unprepare(priv->extclk); | |
549 | clk_put(priv->extclk); | |
550 | } | |
e919c716 | 551 | clk_disable_unprepare(priv->clk); |
f0fba2ad | 552 | |
f9b95980 | 553 | return 0; |
554 | } | |
555 | ||
556 | static struct platform_driver kirkwood_i2s_driver = { | |
557 | .probe = kirkwood_i2s_dev_probe, | |
34e15fbd | 558 | .remove = kirkwood_i2s_dev_remove, |
f9b95980 | 559 | .driver = { |
560 | .name = DRV_NAME, | |
561 | .owner = THIS_MODULE, | |
562 | }, | |
563 | }; | |
564 | ||
41b10225 | 565 | module_platform_driver(kirkwood_i2s_driver); |
f9b95980 | 566 | |
567 | /* Module information */ | |
69737897 | 568 | MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); |
f9b95980 | 569 | MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); |
570 | MODULE_LICENSE("GPL"); | |
571 | MODULE_ALIAS("platform:kirkwood-i2s"); |