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 | ||
f9b95980 | 29 | #define KIRKWOOD_I2S_FORMATS \ |
30 | (SNDRV_PCM_FMTBIT_S16_LE | \ | |
31 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
32 | SNDRV_PCM_FMTBIT_S32_LE) | |
33 | ||
f9b95980 | 34 | static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, |
35 | unsigned int fmt) | |
36 | { | |
f0fba2ad | 37 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); |
f9b95980 | 38 | unsigned long mask; |
39 | unsigned long value; | |
40 | ||
41 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
42 | case SND_SOC_DAIFMT_RIGHT_J: | |
43 | mask = KIRKWOOD_I2S_CTL_RJ; | |
44 | break; | |
45 | case SND_SOC_DAIFMT_LEFT_J: | |
46 | mask = KIRKWOOD_I2S_CTL_LJ; | |
47 | break; | |
48 | case SND_SOC_DAIFMT_I2S: | |
49 | mask = KIRKWOOD_I2S_CTL_I2S; | |
50 | break; | |
51 | default: | |
52 | return -EINVAL; | |
53 | } | |
54 | ||
55 | /* | |
56 | * Set same format for playback and record | |
57 | * This avoids some troubles. | |
58 | */ | |
59 | value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); | |
60 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
61 | value |= mask; | |
62 | writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); | |
63 | ||
64 | value = readl(priv->io+KIRKWOOD_I2S_RECCTL); | |
65 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
66 | value |= mask; | |
67 | writel(value, priv->io+KIRKWOOD_I2S_RECCTL); | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
72 | static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) | |
73 | { | |
74 | unsigned long value; | |
75 | ||
76 | value = KIRKWOOD_DCO_CTL_OFFSET_0; | |
77 | switch (rate) { | |
78 | default: | |
79 | case 44100: | |
80 | value |= KIRKWOOD_DCO_CTL_FREQ_11; | |
81 | break; | |
82 | case 48000: | |
83 | value |= KIRKWOOD_DCO_CTL_FREQ_12; | |
84 | break; | |
85 | case 96000: | |
86 | value |= KIRKWOOD_DCO_CTL_FREQ_24; | |
87 | break; | |
88 | } | |
89 | writel(value, io + KIRKWOOD_DCO_CTL); | |
90 | ||
91 | /* wait for dco locked */ | |
92 | do { | |
93 | cpu_relax(); | |
94 | value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); | |
2424d458 | 95 | value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK; |
f9b95980 | 96 | } while (value == 0); |
97 | } | |
98 | ||
363589bf RK |
99 | static void kirkwood_set_rate(struct snd_soc_dai *dai, |
100 | struct kirkwood_dma_data *priv, unsigned long rate) | |
101 | { | |
102 | uint32_t clks_ctrl; | |
103 | ||
104 | if (rate == 44100 || rate == 48000 || rate == 96000) { | |
8a537f85 JFM |
105 | /* use internal dco for the supported rates |
106 | * defined in kirkwood_i2s_dai */ | |
363589bf RK |
107 | dev_dbg(dai->dev, "%s: dco set rate = %lu\n", |
108 | __func__, rate); | |
109 | kirkwood_set_dco(priv->io, rate); | |
110 | ||
111 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO; | |
8a537f85 JFM |
112 | } else { |
113 | /* use the external clock for the other rates | |
114 | * defined in kirkwood_i2s_dai_extclk */ | |
363589bf RK |
115 | dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n", |
116 | __func__, rate, 256 * rate); | |
117 | clk_set_rate(priv->extclk, 256 * rate); | |
118 | ||
119 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK; | |
120 | } | |
121 | writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL); | |
122 | } | |
123 | ||
f0fba2ad LG |
124 | static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, |
125 | struct snd_soc_dai *dai) | |
126 | { | |
127 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); | |
128 | ||
129 | snd_soc_dai_set_dma_data(dai, substream, priv); | |
130 | return 0; | |
131 | } | |
132 | ||
f9b95980 | 133 | static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, |
134 | struct snd_pcm_hw_params *params, | |
135 | struct snd_soc_dai *dai) | |
136 | { | |
f0fba2ad | 137 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 RK |
138 | uint32_t ctl_play, ctl_rec; |
139 | unsigned int i2s_reg; | |
140 | unsigned long i2s_value; | |
f9b95980 | 141 | |
142 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
143 | i2s_reg = KIRKWOOD_I2S_PLAYCTL; | |
f9b95980 | 144 | } else { |
145 | i2s_reg = KIRKWOOD_I2S_RECCTL; | |
f9b95980 | 146 | } |
147 | ||
363589bf | 148 | kirkwood_set_rate(dai, priv, params_rate(params)); |
f9b95980 | 149 | |
150 | i2s_value = readl(priv->io+i2s_reg); | |
151 | i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; | |
152 | ||
f9b95980 | 153 | /* |
154 | * Size settings in play/rec i2s control regs and play/rec control | |
155 | * regs must be the same. | |
156 | */ | |
157 | switch (params_format(params)) { | |
158 | case SNDRV_PCM_FORMAT_S16_LE: | |
159 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; | |
d8d11ba5 RK |
160 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | |
161 | KIRKWOOD_PLAYCTL_I2S_EN; | |
162 | ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | | |
163 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 164 | break; |
165 | /* | |
166 | * doesn't work... S20_3LE != kirkwood 20bit format ? | |
167 | * | |
168 | case SNDRV_PCM_FORMAT_S20_3LE: | |
169 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; | |
d8d11ba5 RK |
170 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | |
171 | KIRKWOOD_PLAYCTL_I2S_EN; | |
172 | ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | | |
173 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 174 | break; |
175 | */ | |
176 | case SNDRV_PCM_FORMAT_S24_LE: | |
177 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; | |
d8d11ba5 RK |
178 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | |
179 | KIRKWOOD_PLAYCTL_I2S_EN; | |
180 | ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | | |
181 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 182 | break; |
183 | case SNDRV_PCM_FORMAT_S32_LE: | |
184 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; | |
d8d11ba5 RK |
185 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | |
186 | KIRKWOOD_PLAYCTL_I2S_EN; | |
187 | ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | | |
188 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 189 | break; |
190 | default: | |
191 | return -EINVAL; | |
192 | } | |
dfe4c936 | 193 | |
194 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
dfe4c936 | 195 | if (params_channels(params) == 1) |
d8d11ba5 | 196 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; |
dfe4c936 | 197 | else |
d8d11ba5 RK |
198 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; |
199 | ||
200 | priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | | |
201 | KIRKWOOD_PLAYCTL_I2S_EN | | |
202 | KIRKWOOD_PLAYCTL_SPDIF_EN | | |
203 | KIRKWOOD_PLAYCTL_SIZE_MASK); | |
204 | priv->ctl_play |= ctl_play; | |
205 | } else { | |
206 | priv->ctl_rec &= ~KIRKWOOD_RECCTL_SIZE_MASK; | |
207 | priv->ctl_rec |= ctl_rec; | |
dfe4c936 | 208 | } |
209 | ||
f9b95980 | 210 | writel(i2s_value, priv->io+i2s_reg); |
f9b95980 | 211 | |
212 | return 0; | |
213 | } | |
214 | ||
215 | static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, | |
216 | int cmd, struct snd_soc_dai *dai) | |
217 | { | |
f0fba2ad | 218 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
982b604b RK |
219 | uint32_t ctl, value; |
220 | ||
221 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
222 | if (ctl & KIRKWOOD_PLAYCTL_PAUSE) { | |
223 | unsigned timeout = 5000; | |
224 | /* | |
225 | * The Armada510 spec says that if we enter pause mode, the | |
226 | * busy bit must be read back as clear _twice_. Make sure | |
227 | * we respect that otherwise we get DMA underruns. | |
228 | */ | |
229 | do { | |
230 | value = ctl; | |
231 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
232 | if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) | |
233 | break; | |
234 | udelay(1); | |
235 | } while (timeout--); | |
236 | ||
237 | if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) | |
238 | dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", | |
239 | ctl); | |
240 | } | |
f9b95980 | 241 | |
242 | switch (cmd) { | |
243 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
244 | /* configure */ |
245 | ctl = priv->ctl_play; | |
246 | value = ctl & ~(KIRKWOOD_PLAYCTL_I2S_EN | | |
247 | KIRKWOOD_PLAYCTL_SPDIF_EN); | |
248 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
249 | ||
250 | /* enable interrupts */ | |
f9b95980 | 251 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
252 | value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
253 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
254 | ||
d8d11ba5 | 255 | /* enable playback */ |
982b604b | 256 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 257 | break; |
258 | ||
259 | case SNDRV_PCM_TRIGGER_STOP: | |
260 | /* stop audio, disable interrupts */ | |
982b604b RK |
261 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
262 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 263 | |
264 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
265 | value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
266 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
267 | ||
268 | /* disable all playbacks */ | |
982b604b RK |
269 | ctl &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); |
270 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 271 | break; |
272 | ||
273 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
274 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
982b604b RK |
275 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; |
276 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 277 | break; |
278 | ||
279 | case SNDRV_PCM_TRIGGER_RESUME: | |
280 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
982b604b RK |
281 | ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); |
282 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); | |
f9b95980 | 283 | break; |
284 | ||
285 | default: | |
286 | return -EINVAL; | |
287 | } | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, | |
293 | int cmd, struct snd_soc_dai *dai) | |
294 | { | |
f0fba2ad | 295 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 | 296 | uint32_t ctl, value; |
f9b95980 | 297 | |
298 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
299 | ||
300 | switch (cmd) { | |
301 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
302 | /* configure */ |
303 | ctl = priv->ctl_rec; | |
304 | value = ctl & ~KIRKWOOD_RECCTL_I2S_EN; | |
305 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
306 | ||
307 | /* enable interrupts */ | |
f9b95980 | 308 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
309 | value |= KIRKWOOD_INT_CAUSE_REC_BYTES; | |
310 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
311 | ||
d8d11ba5 RK |
312 | /* enable record */ |
313 | writel(ctl, priv->io + KIRKWOOD_RECCTL); | |
f9b95980 | 314 | break; |
315 | ||
316 | case SNDRV_PCM_TRIGGER_STOP: | |
317 | /* stop audio, disable interrupts */ | |
318 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 319 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 320 | writel(value, priv->io + KIRKWOOD_RECCTL); |
321 | ||
322 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
323 | value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; | |
324 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
325 | ||
326 | /* disable all records */ | |
327 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
328 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
329 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
330 | break; | |
331 | ||
332 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
333 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
334 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 335 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 336 | writel(value, priv->io + KIRKWOOD_RECCTL); |
337 | break; | |
338 | ||
339 | case SNDRV_PCM_TRIGGER_RESUME: | |
340 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
341 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 342 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); |
f9b95980 | 343 | writel(value, priv->io + KIRKWOOD_RECCTL); |
344 | break; | |
345 | ||
346 | default: | |
347 | return -EINVAL; | |
f9b95980 | 348 | } |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, | |
354 | struct snd_soc_dai *dai) | |
355 | { | |
356 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
357 | return kirkwood_i2s_play_trigger(substream, cmd, dai); | |
358 | else | |
359 | return kirkwood_i2s_rec_trigger(substream, cmd, dai); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
f0fba2ad | 364 | static int kirkwood_i2s_probe(struct snd_soc_dai *dai) |
f9b95980 | 365 | { |
f0fba2ad | 366 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
f9b95980 | 367 | unsigned long value; |
368 | unsigned int reg_data; | |
369 | ||
370 | /* put system in a "safe" state : */ | |
371 | /* disable audio interrupts */ | |
372 | writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); | |
373 | writel(0, priv->io + KIRKWOOD_INT_MASK); | |
374 | ||
375 | reg_data = readl(priv->io + 0x1200); | |
376 | reg_data &= (~(0x333FF8)); | |
377 | reg_data |= 0x111D18; | |
378 | writel(reg_data, priv->io + 0x1200); | |
379 | ||
380 | msleep(500); | |
381 | ||
382 | reg_data = readl(priv->io + 0x1200); | |
383 | reg_data &= (~(0x333FF8)); | |
384 | reg_data |= 0x111D18; | |
385 | writel(reg_data, priv->io + 0x1200); | |
386 | ||
387 | /* disable playback/record */ | |
388 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
389 | value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); | |
390 | writel(value, priv->io + KIRKWOOD_PLAYCTL); | |
391 | ||
392 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
393 | value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); | |
394 | writel(value, priv->io + KIRKWOOD_RECCTL); | |
395 | ||
396 | return 0; | |
397 | ||
398 | } | |
399 | ||
85e7652d | 400 | static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { |
f0fba2ad | 401 | .startup = kirkwood_i2s_startup, |
f9b95980 | 402 | .trigger = kirkwood_i2s_trigger, |
403 | .hw_params = kirkwood_i2s_hw_params, | |
404 | .set_fmt = kirkwood_i2s_set_fmt, | |
405 | }; | |
406 | ||
407 | ||
f0fba2ad | 408 | static struct snd_soc_dai_driver kirkwood_i2s_dai = { |
f9b95980 | 409 | .probe = kirkwood_i2s_probe, |
f9b95980 | 410 | .playback = { |
411 | .channels_min = 1, | |
412 | .channels_max = 2, | |
9e12cbd9 MB |
413 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
414 | SNDRV_PCM_RATE_96000, | |
363589bf RK |
415 | .formats = KIRKWOOD_I2S_FORMATS, |
416 | }, | |
f9b95980 | 417 | .capture = { |
418 | .channels_min = 1, | |
419 | .channels_max = 2, | |
9e12cbd9 MB |
420 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
421 | SNDRV_PCM_RATE_96000, | |
363589bf RK |
422 | .formats = KIRKWOOD_I2S_FORMATS, |
423 | }, | |
424 | .ops = &kirkwood_i2s_dai_ops, | |
425 | }; | |
426 | ||
427 | static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk = { | |
428 | .probe = kirkwood_i2s_probe, | |
363589bf RK |
429 | .playback = { |
430 | .channels_min = 1, | |
431 | .channels_max = 2, | |
432 | .rates = SNDRV_PCM_RATE_8000_192000 | | |
433 | SNDRV_PCM_RATE_CONTINUOUS | | |
434 | SNDRV_PCM_RATE_KNOT, | |
435 | .formats = KIRKWOOD_I2S_FORMATS, | |
436 | }, | |
437 | .capture = { | |
438 | .channels_min = 1, | |
439 | .channels_max = 2, | |
440 | .rates = SNDRV_PCM_RATE_8000_192000 | | |
441 | SNDRV_PCM_RATE_CONTINUOUS | | |
442 | SNDRV_PCM_RATE_KNOT, | |
443 | .formats = KIRKWOOD_I2S_FORMATS, | |
444 | }, | |
f9b95980 | 445 | .ops = &kirkwood_i2s_dai_ops, |
446 | }; | |
f9b95980 | 447 | |
83d85f53 KM |
448 | static const struct snd_soc_component_driver kirkwood_i2s_component = { |
449 | .name = DRV_NAME, | |
450 | }; | |
451 | ||
34e15fbd | 452 | static int kirkwood_i2s_dev_probe(struct platform_device *pdev) |
f9b95980 | 453 | { |
363589bf RK |
454 | struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data; |
455 | struct snd_soc_dai_driver *soc_dai = &kirkwood_i2s_dai; | |
f0fba2ad | 456 | struct kirkwood_dma_data *priv; |
363589bf | 457 | struct resource *mem; |
f9b95980 | 458 | int err; |
459 | ||
dbc517bf | 460 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
f9b95980 | 461 | if (!priv) { |
462 | dev_err(&pdev->dev, "allocation failed\n"); | |
dbc517bf | 463 | return -ENOMEM; |
f9b95980 | 464 | } |
f0fba2ad | 465 | dev_set_drvdata(&pdev->dev, priv); |
f9b95980 | 466 | |
467 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
b25b5aa0 TR |
468 | priv->io = devm_ioremap_resource(&pdev->dev, mem); |
469 | if (IS_ERR(priv->io)) | |
470 | return PTR_ERR(priv->io); | |
f9b95980 | 471 | |
472 | priv->irq = platform_get_irq(pdev, 0); | |
473 | if (priv->irq <= 0) { | |
474 | dev_err(&pdev->dev, "platform_get_irq failed\n"); | |
dbc517bf | 475 | return -ENXIO; |
f9b95980 | 476 | } |
477 | ||
d4d9820b | 478 | if (!data) { |
f9b95980 | 479 | dev_err(&pdev->dev, "no platform data ?!\n"); |
dbc517bf | 480 | return -EINVAL; |
f9b95980 | 481 | } |
482 | ||
f9b95980 | 483 | priv->burst = data->burst; |
484 | ||
dbc517bf | 485 | priv->clk = devm_clk_get(&pdev->dev, NULL); |
e919c716 AL |
486 | if (IS_ERR(priv->clk)) { |
487 | dev_err(&pdev->dev, "no clock\n"); | |
dbc517bf | 488 | return PTR_ERR(priv->clk); |
e919c716 | 489 | } |
dbc517bf RK |
490 | |
491 | err = clk_prepare_enable(priv->clk); | |
492 | if (err < 0) | |
493 | return err; | |
e919c716 | 494 | |
4734dc96 | 495 | priv->extclk = devm_clk_get(&pdev->dev, "extclk"); |
d8d11ba5 RK |
496 | if (!IS_ERR(priv->extclk)) { |
497 | if (priv->extclk == priv->clk) { | |
af64d734 | 498 | devm_clk_put(&pdev->dev, priv->extclk); |
d8d11ba5 RK |
499 | priv->extclk = ERR_PTR(-EINVAL); |
500 | } else { | |
501 | dev_info(&pdev->dev, "found external clock\n"); | |
502 | clk_prepare_enable(priv->extclk); | |
503 | soc_dai = &kirkwood_i2s_dai_extclk; | |
504 | } | |
505 | } | |
506 | ||
507 | /* Some sensible defaults - this reflects the powerup values */ | |
508 | priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; | |
509 | priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; | |
510 | ||
511 | /* Select the burst size */ | |
512 | if (data->burst == 32) { | |
513 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; | |
514 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; | |
515 | } else { | |
516 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; | |
517 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; | |
518 | } | |
519 | ||
83d85f53 KM |
520 | err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component, |
521 | soc_dai, 1); | |
baffab28 SB |
522 | if (!err) |
523 | return 0; | |
83d85f53 | 524 | dev_err(&pdev->dev, "snd_soc_register_component failed\n"); |
baffab28 | 525 | |
4734dc96 | 526 | if (!IS_ERR(priv->extclk)) |
363589bf | 527 | clk_disable_unprepare(priv->extclk); |
baffab28 | 528 | clk_disable_unprepare(priv->clk); |
dbc517bf | 529 | |
f9b95980 | 530 | return err; |
531 | } | |
532 | ||
34e15fbd | 533 | static int kirkwood_i2s_dev_remove(struct platform_device *pdev) |
f9b95980 | 534 | { |
f0fba2ad LG |
535 | struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); |
536 | ||
83d85f53 | 537 | snd_soc_unregister_component(&pdev->dev); |
e919c716 | 538 | |
4734dc96 | 539 | if (!IS_ERR(priv->extclk)) |
363589bf | 540 | clk_disable_unprepare(priv->extclk); |
e919c716 | 541 | clk_disable_unprepare(priv->clk); |
f0fba2ad | 542 | |
f9b95980 | 543 | return 0; |
544 | } | |
545 | ||
546 | static struct platform_driver kirkwood_i2s_driver = { | |
547 | .probe = kirkwood_i2s_dev_probe, | |
34e15fbd | 548 | .remove = kirkwood_i2s_dev_remove, |
f9b95980 | 549 | .driver = { |
550 | .name = DRV_NAME, | |
551 | .owner = THIS_MODULE, | |
552 | }, | |
553 | }; | |
554 | ||
41b10225 | 555 | module_platform_driver(kirkwood_i2s_driver); |
f9b95980 | 556 | |
557 | /* Module information */ | |
69737897 | 558 | MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); |
f9b95980 | 559 | MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); |
560 | MODULE_LICENSE("GPL"); | |
561 | MODULE_ALIAS("platform:kirkwood-i2s"); |