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2e74796a JN |
1 | /* |
2 | * omap-mcbsp.c -- OMAP ALSA SoC DAI driver using McBSP port | |
3 | * | |
4 | * Copyright (C) 2008 Nokia Corporation | |
5 | * | |
b08f7a62 | 6 | * Contact: Jarkko Nikula <jhnikula@gmail.com> |
56a87429 | 7 | * Peter Ujfalusi <peter.ujfalusi@ti.com> |
2e74796a JN |
8 | * |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
21 | * 02110-1301 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/device.h> | |
28 | #include <sound/core.h> | |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/initval.h> | |
32 | #include <sound/soc.h> | |
33 | ||
ce491cf8 TL |
34 | #include <plat/dma.h> |
35 | #include <plat/mcbsp.h> | |
2e74796a JN |
36 | #include "omap-mcbsp.h" |
37 | #include "omap-pcm.h" | |
38 | ||
0b604856 | 39 | #define OMAP_MCBSP_RATES (SNDRV_PCM_RATE_8000_96000) |
2e74796a | 40 | |
83905c13 IK |
41 | #define OMAP_MCBSP_SOC_SINGLE_S16_EXT(xname, xmin, xmax, \ |
42 | xhandler_get, xhandler_put) \ | |
43 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ | |
44 | .info = omap_mcbsp_st_info_volsw, \ | |
45 | .get = xhandler_get, .put = xhandler_put, \ | |
46 | .private_value = (unsigned long) &(struct soc_mixer_control) \ | |
47 | {.min = xmin, .max = xmax} } | |
48 | ||
2e74796a JN |
49 | struct omap_mcbsp_data { |
50 | unsigned int bus_id; | |
51 | struct omap_mcbsp_reg_cfg regs; | |
ba9d0fd0 | 52 | unsigned int fmt; |
2e74796a JN |
53 | /* |
54 | * Flags indicating is the bus already activated and configured by | |
55 | * another substream | |
56 | */ | |
57 | int active; | |
58 | int configured; | |
5f63ef99 GG |
59 | unsigned int in_freq; |
60 | int clk_div; | |
3f024039 | 61 | int wlen; |
2e74796a JN |
62 | }; |
63 | ||
2e74796a JN |
64 | static struct omap_mcbsp_data mcbsp_data[NUM_LINKS]; |
65 | ||
66 | /* | |
67 | * Stream DMA parameters. DMA request line and port address are set runtime | |
68 | * since they are different between OMAP1 and later OMAPs | |
69 | */ | |
2e89713a | 70 | static struct omap_pcm_dma_data omap_mcbsp_dai_dma_params[NUM_LINKS][2]; |
2e74796a | 71 | |
caebc0cb EV |
72 | static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream) |
73 | { | |
74 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
75 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
76 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); | |
cf80e158 | 77 | struct omap_pcm_dma_data *dma_data; |
a0a499c5 | 78 | int dma_op_mode = omap_mcbsp_get_dma_op_mode(mcbsp_data->bus_id); |
3f024039 | 79 | int words; |
a0a499c5 | 80 | |
f0fba2ad | 81 | dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); |
cf80e158 | 82 | |
a0a499c5 EV |
83 | /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ |
84 | if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) | |
cf80e158 PU |
85 | /* |
86 | * Configure McBSP threshold based on either: | |
87 | * packet_size, when the sDMA is in packet mode, or | |
88 | * based on the period size. | |
89 | */ | |
90 | if (dma_data->packet_size) | |
91 | words = dma_data->packet_size; | |
92 | else | |
93 | words = snd_pcm_lib_period_bytes(substream) / | |
3f024039 | 94 | (mcbsp_data->wlen / 8); |
a0a499c5 | 95 | else |
3f024039 | 96 | words = 1; |
caebc0cb EV |
97 | |
98 | /* Configure McBSP internal buffer usage */ | |
99 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
3f024039 | 100 | omap_mcbsp_set_tx_threshold(mcbsp_data->bus_id, words); |
caebc0cb | 101 | else |
3f024039 | 102 | omap_mcbsp_set_rx_threshold(mcbsp_data->bus_id, words); |
caebc0cb EV |
103 | } |
104 | ||
ddc29b01 PU |
105 | static int omap_mcbsp_hwrule_min_buffersize(struct snd_pcm_hw_params *params, |
106 | struct snd_pcm_hw_rule *rule) | |
107 | { | |
108 | struct snd_interval *buffer_size = hw_param_interval(params, | |
109 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE); | |
110 | struct snd_interval *channels = hw_param_interval(params, | |
111 | SNDRV_PCM_HW_PARAM_CHANNELS); | |
112 | struct omap_mcbsp_data *mcbsp_data = rule->private; | |
113 | struct snd_interval frames; | |
114 | int size; | |
115 | ||
116 | snd_interval_any(&frames); | |
117 | size = omap_mcbsp_get_fifo_size(mcbsp_data->bus_id); | |
118 | ||
119 | frames.min = size / channels->min; | |
120 | frames.integer = 1; | |
121 | return snd_interval_refine(buffer_size, &frames); | |
122 | } | |
123 | ||
dee89c4d | 124 | static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, |
f0fba2ad | 125 | struct snd_soc_dai *cpu_dai) |
2e74796a | 126 | { |
f0fba2ad | 127 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
caebc0cb | 128 | int bus_id = mcbsp_data->bus_id; |
2e74796a JN |
129 | int err = 0; |
130 | ||
caebc0cb EV |
131 | if (!cpu_dai->active) |
132 | err = omap_mcbsp_request(bus_id); | |
133 | ||
ddc29b01 PU |
134 | /* |
135 | * OMAP3 McBSP FIFO is word structured. | |
136 | * McBSP2 has 1024 + 256 = 1280 word long buffer, | |
137 | * McBSP1,3,4,5 has 128 word long buffer | |
138 | * This means that the size of the FIFO depends on the sample format. | |
139 | * For example on McBSP3: | |
140 | * 16bit samples: size is 128 * 2 = 256 bytes | |
141 | * 32bit samples: size is 128 * 4 = 512 bytes | |
142 | * It is simpler to place constraint for buffer and period based on | |
143 | * channels. | |
144 | * McBSP3 as example again (16 or 32 bit samples): | |
145 | * 1 channel (mono): size is 128 frames (128 words) | |
146 | * 2 channels (stereo): size is 128 / 2 = 64 frames (2 * 64 words) | |
147 | * 4 channels: size is 128 / 4 = 32 frames (4 * 32 words) | |
148 | */ | |
d4912977 | 149 | if (cpu_is_omap34xx() || cpu_is_omap44xx()) { |
6984992b | 150 | /* |
998a8a69 | 151 | * Rule for the buffer size. We should not allow |
ddc29b01 PU |
152 | * smaller buffer than the FIFO size to avoid underruns |
153 | */ | |
154 | snd_pcm_hw_rule_add(substream->runtime, 0, | |
155 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
156 | omap_mcbsp_hwrule_min_buffersize, | |
157 | mcbsp_data, | |
158 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
caebc0cb | 159 | |
998a8a69 PU |
160 | /* Make sure, that the period size is always even */ |
161 | snd_pcm_hw_constraint_step(substream->runtime, 0, | |
162 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2); | |
6984992b JN |
163 | } |
164 | ||
2e74796a JN |
165 | return err; |
166 | } | |
167 | ||
dee89c4d | 168 | static void omap_mcbsp_dai_shutdown(struct snd_pcm_substream *substream, |
f0fba2ad | 169 | struct snd_soc_dai *cpu_dai) |
2e74796a | 170 | { |
f0fba2ad | 171 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
2e74796a JN |
172 | |
173 | if (!cpu_dai->active) { | |
174 | omap_mcbsp_free(mcbsp_data->bus_id); | |
175 | mcbsp_data->configured = 0; | |
176 | } | |
177 | } | |
178 | ||
dee89c4d | 179 | static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd, |
f0fba2ad | 180 | struct snd_soc_dai *cpu_dai) |
2e74796a | 181 | { |
f0fba2ad | 182 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
c12abc01 | 183 | int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); |
2e74796a JN |
184 | |
185 | switch (cmd) { | |
186 | case SNDRV_PCM_TRIGGER_START: | |
187 | case SNDRV_PCM_TRIGGER_RESUME: | |
188 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
c12abc01 JN |
189 | mcbsp_data->active++; |
190 | omap_mcbsp_start(mcbsp_data->bus_id, play, !play); | |
2e74796a JN |
191 | break; |
192 | ||
193 | case SNDRV_PCM_TRIGGER_STOP: | |
194 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
195 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
c12abc01 JN |
196 | omap_mcbsp_stop(mcbsp_data->bus_id, play, !play); |
197 | mcbsp_data->active--; | |
2e74796a JN |
198 | break; |
199 | default: | |
200 | err = -EINVAL; | |
201 | } | |
202 | ||
203 | return err; | |
204 | } | |
205 | ||
75581d24 PU |
206 | static snd_pcm_sframes_t omap_mcbsp_dai_delay( |
207 | struct snd_pcm_substream *substream, | |
208 | struct snd_soc_dai *dai) | |
209 | { | |
210 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
211 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
212 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); | |
75581d24 PU |
213 | u16 fifo_use; |
214 | snd_pcm_sframes_t delay; | |
215 | ||
216 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
217 | fifo_use = omap_mcbsp_get_tx_delay(mcbsp_data->bus_id); | |
218 | else | |
219 | fifo_use = omap_mcbsp_get_rx_delay(mcbsp_data->bus_id); | |
220 | ||
221 | /* | |
222 | * Divide the used locations with the channel count to get the | |
223 | * FIFO usage in samples (don't care about partial samples in the | |
224 | * buffer). | |
225 | */ | |
226 | delay = fifo_use / substream->runtime->channels; | |
227 | ||
228 | return delay; | |
229 | } | |
230 | ||
2e74796a | 231 | static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, |
dee89c4d | 232 | struct snd_pcm_hw_params *params, |
f0fba2ad | 233 | struct snd_soc_dai *cpu_dai) |
2e74796a | 234 | { |
f0fba2ad | 235 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
2e74796a | 236 | struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; |
81ec027e PU |
237 | struct omap_pcm_dma_data *dma_data; |
238 | int dma, bus_id = mcbsp_data->bus_id; | |
caebc0cb | 239 | int wlen, channels, wpf, sync_mode = OMAP_DMA_SYNC_ELEMENT; |
cf80e158 | 240 | int pkt_size = 0; |
2e74796a | 241 | unsigned long port; |
5f63ef99 | 242 | unsigned int format, div, framesize, master; |
2e74796a | 243 | |
81ec027e | 244 | dma_data = &omap_mcbsp_dai_dma_params[cpu_dai->id][substream->stream]; |
2686e07b KVA |
245 | |
246 | dma = omap_mcbsp_dma_ch_params(bus_id, substream->stream); | |
247 | port = omap_mcbsp_dma_reg_params(bus_id, substream->stream); | |
248 | ||
d98508a1 SL |
249 | switch (params_format(params)) { |
250 | case SNDRV_PCM_FORMAT_S16_LE: | |
81ec027e | 251 | dma_data->data_type = OMAP_DMA_DATA_TYPE_S16; |
cf80e158 | 252 | wlen = 16; |
d98508a1 SL |
253 | break; |
254 | case SNDRV_PCM_FORMAT_S32_LE: | |
81ec027e | 255 | dma_data->data_type = OMAP_DMA_DATA_TYPE_S32; |
cf80e158 | 256 | wlen = 32; |
d98508a1 SL |
257 | break; |
258 | default: | |
259 | return -EINVAL; | |
260 | } | |
d4912977 | 261 | if (cpu_is_omap34xx()) { |
15d01430 PU |
262 | dma_data->set_threshold = omap_mcbsp_set_threshold; |
263 | /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ | |
264 | if (omap_mcbsp_get_dma_op_mode(bus_id) == | |
cf80e158 PU |
265 | MCBSP_DMA_MODE_THRESHOLD) { |
266 | int period_words, max_thrsh; | |
267 | ||
268 | period_words = params_period_bytes(params) / (wlen / 8); | |
269 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
270 | max_thrsh = omap_mcbsp_get_max_tx_threshold( | |
271 | mcbsp_data->bus_id); | |
272 | else | |
273 | max_thrsh = omap_mcbsp_get_max_rx_threshold( | |
274 | mcbsp_data->bus_id); | |
275 | /* | |
276 | * If the period contains less or equal number of words, | |
277 | * we are using the original threshold mode setup: | |
278 | * McBSP threshold = sDMA frame size = period_size | |
279 | * Otherwise we switch to sDMA packet mode: | |
280 | * McBSP threshold = sDMA packet size | |
281 | * sDMA frame size = period size | |
282 | */ | |
283 | if (period_words > max_thrsh) { | |
284 | int divider = 0; | |
285 | ||
286 | /* | |
287 | * Look for the biggest threshold value, which | |
288 | * divides the period size evenly. | |
289 | */ | |
290 | divider = period_words / max_thrsh; | |
291 | if (period_words % max_thrsh) | |
292 | divider++; | |
293 | while (period_words % divider && | |
294 | divider < period_words) | |
295 | divider++; | |
296 | if (divider == period_words) | |
297 | return -EINVAL; | |
298 | ||
299 | pkt_size = period_words / divider; | |
300 | sync_mode = OMAP_DMA_SYNC_PACKET; | |
301 | } else { | |
302 | sync_mode = OMAP_DMA_SYNC_FRAME; | |
303 | } | |
304 | } | |
15d01430 PU |
305 | } |
306 | ||
307 | dma_data->name = substream->stream ? "Audio Capture" : "Audio Playback"; | |
308 | dma_data->dma_req = dma; | |
309 | dma_data->port_addr = port; | |
310 | dma_data->sync_mode = sync_mode; | |
cf80e158 | 311 | dma_data->packet_size = pkt_size; |
fd23b7de | 312 | |
81ec027e | 313 | snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); |
2e74796a JN |
314 | |
315 | if (mcbsp_data->configured) { | |
316 | /* McBSP already configured by another stream */ | |
317 | return 0; | |
318 | } | |
319 | ||
c29b206f PU |
320 | format = mcbsp_data->fmt & SND_SOC_DAIFMT_FORMAT_MASK; |
321 | wpf = channels = params_channels(params); | |
299a151f PU |
322 | if (channels == 2 && (format == SND_SOC_DAIFMT_I2S || |
323 | format == SND_SOC_DAIFMT_LEFT_J)) { | |
5f63ef99 GG |
324 | /* Use dual-phase frames */ |
325 | regs->rcr2 |= RPHASE; | |
326 | regs->xcr2 |= XPHASE; | |
327 | /* Set 1 word per (McBSP) frame for phase1 and phase2 */ | |
328 | wpf--; | |
329 | regs->rcr2 |= RFRLEN2(wpf - 1); | |
330 | regs->xcr2 |= XFRLEN2(wpf - 1); | |
2e74796a JN |
331 | } |
332 | ||
5f63ef99 GG |
333 | regs->rcr1 |= RFRLEN1(wpf - 1); |
334 | regs->xcr1 |= XFRLEN1(wpf - 1); | |
335 | ||
2e74796a JN |
336 | switch (params_format(params)) { |
337 | case SNDRV_PCM_FORMAT_S16_LE: | |
338 | /* Set word lengths */ | |
339 | regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_16); | |
340 | regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_16); | |
341 | regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_16); | |
342 | regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_16); | |
2e74796a | 343 | break; |
d98508a1 SL |
344 | case SNDRV_PCM_FORMAT_S32_LE: |
345 | /* Set word lengths */ | |
d98508a1 SL |
346 | regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_32); |
347 | regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_32); | |
348 | regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_32); | |
349 | regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_32); | |
350 | break; | |
2e74796a JN |
351 | default: |
352 | /* Unsupported PCM format */ | |
353 | return -EINVAL; | |
354 | } | |
355 | ||
5f63ef99 GG |
356 | /* In McBSP master modes, FRAME (i.e. sample rate) is generated |
357 | * by _counting_ BCLKs. Calculate frame size in BCLKs */ | |
358 | master = mcbsp_data->fmt & SND_SOC_DAIFMT_MASTER_MASK; | |
359 | if (master == SND_SOC_DAIFMT_CBS_CFS) { | |
360 | div = mcbsp_data->clk_div ? mcbsp_data->clk_div : 1; | |
361 | framesize = (mcbsp_data->in_freq / div) / params_rate(params); | |
362 | ||
363 | if (framesize < wlen * channels) { | |
364 | printk(KERN_ERR "%s: not enough bandwidth for desired rate and " | |
365 | "channels\n", __func__); | |
366 | return -EINVAL; | |
367 | } | |
368 | } else | |
369 | framesize = wlen * channels; | |
370 | ||
ba9d0fd0 | 371 | /* Set FS period and length in terms of bit clock periods */ |
c29b206f | 372 | switch (format) { |
ba9d0fd0 | 373 | case SND_SOC_DAIFMT_I2S: |
299a151f | 374 | case SND_SOC_DAIFMT_LEFT_J: |
5f63ef99 GG |
375 | regs->srgr2 |= FPER(framesize - 1); |
376 | regs->srgr1 |= FWID((framesize >> 1) - 1); | |
ba9d0fd0 | 377 | break; |
3ba191ce | 378 | case SND_SOC_DAIFMT_DSP_A: |
bd25867a | 379 | case SND_SOC_DAIFMT_DSP_B: |
5f63ef99 | 380 | regs->srgr2 |= FPER(framesize - 1); |
36ce8582 | 381 | regs->srgr1 |= FWID(0); |
ba9d0fd0 JN |
382 | break; |
383 | } | |
384 | ||
2e74796a | 385 | omap_mcbsp_config(bus_id, &mcbsp_data->regs); |
3f024039 | 386 | mcbsp_data->wlen = wlen; |
2e74796a JN |
387 | mcbsp_data->configured = 1; |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | /* | |
393 | * This must be called before _set_clkdiv and _set_sysclk since McBSP register | |
394 | * cache is initialized here | |
395 | */ | |
8687eb8b | 396 | static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai, |
2e74796a JN |
397 | unsigned int fmt) |
398 | { | |
f0fba2ad | 399 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
2e74796a | 400 | struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; |
36ce8582 | 401 | unsigned int temp_fmt = fmt; |
2e74796a JN |
402 | |
403 | if (mcbsp_data->configured) | |
404 | return 0; | |
405 | ||
ba9d0fd0 | 406 | mcbsp_data->fmt = fmt; |
2e74796a JN |
407 | memset(regs, 0, sizeof(*regs)); |
408 | /* Generic McBSP register settings */ | |
409 | regs->spcr2 |= XINTM(3) | FREE; | |
410 | regs->spcr1 |= RINTM(3); | |
c721bbda | 411 | /* RFIG and XFIG are not defined in 34xx */ |
d4686c65 | 412 | if (!cpu_is_omap34xx() && !cpu_is_omap44xx()) { |
c721bbda EN |
413 | regs->rcr2 |= RFIG; |
414 | regs->xcr2 |= XFIG; | |
415 | } | |
d4686c65 | 416 | if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) { |
32080af7 JN |
417 | regs->xccr = DXENDLY(1) | XDMAEN | XDISABLE; |
418 | regs->rccr = RFULL_CYCLE | RDMAEN | RDISABLE; | |
ef390c0b | 419 | } |
2e74796a JN |
420 | |
421 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
422 | case SND_SOC_DAIFMT_I2S: | |
423 | /* 1-bit data delay */ | |
424 | regs->rcr2 |= RDATDLY(1); | |
425 | regs->xcr2 |= XDATDLY(1); | |
426 | break; | |
299a151f PU |
427 | case SND_SOC_DAIFMT_LEFT_J: |
428 | /* 0-bit data delay */ | |
429 | regs->rcr2 |= RDATDLY(0); | |
430 | regs->xcr2 |= XDATDLY(0); | |
431 | regs->spcr1 |= RJUST(2); | |
432 | /* Invert FS polarity configuration */ | |
433 | temp_fmt ^= SND_SOC_DAIFMT_NB_IF; | |
434 | break; | |
3ba191ce PU |
435 | case SND_SOC_DAIFMT_DSP_A: |
436 | /* 1-bit data delay */ | |
437 | regs->rcr2 |= RDATDLY(1); | |
438 | regs->xcr2 |= XDATDLY(1); | |
439 | /* Invert FS polarity configuration */ | |
440 | temp_fmt ^= SND_SOC_DAIFMT_NB_IF; | |
441 | break; | |
bd25867a | 442 | case SND_SOC_DAIFMT_DSP_B: |
3336c5b5 AK |
443 | /* 0-bit data delay */ |
444 | regs->rcr2 |= RDATDLY(0); | |
445 | regs->xcr2 |= XDATDLY(0); | |
36ce8582 JN |
446 | /* Invert FS polarity configuration */ |
447 | temp_fmt ^= SND_SOC_DAIFMT_NB_IF; | |
3336c5b5 | 448 | break; |
2e74796a JN |
449 | default: |
450 | /* Unsupported data format */ | |
451 | return -EINVAL; | |
452 | } | |
453 | ||
454 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
455 | case SND_SOC_DAIFMT_CBS_CFS: | |
456 | /* McBSP master. Set FS and bit clocks as outputs */ | |
457 | regs->pcr0 |= FSXM | FSRM | | |
458 | CLKXM | CLKRM; | |
459 | /* Sample rate generator drives the FS */ | |
460 | regs->srgr2 |= FSGM; | |
461 | break; | |
462 | case SND_SOC_DAIFMT_CBM_CFM: | |
463 | /* McBSP slave */ | |
464 | break; | |
465 | default: | |
466 | /* Unsupported master/slave configuration */ | |
467 | return -EINVAL; | |
468 | } | |
469 | ||
470 | /* Set bit clock (CLKX/CLKR) and FS polarities */ | |
36ce8582 | 471 | switch (temp_fmt & SND_SOC_DAIFMT_INV_MASK) { |
2e74796a JN |
472 | case SND_SOC_DAIFMT_NB_NF: |
473 | /* | |
474 | * Normal BCLK + FS. | |
475 | * FS active low. TX data driven on falling edge of bit clock | |
476 | * and RX data sampled on rising edge of bit clock. | |
477 | */ | |
478 | regs->pcr0 |= FSXP | FSRP | | |
479 | CLKXP | CLKRP; | |
480 | break; | |
481 | case SND_SOC_DAIFMT_NB_IF: | |
482 | regs->pcr0 |= CLKXP | CLKRP; | |
483 | break; | |
484 | case SND_SOC_DAIFMT_IB_NF: | |
485 | regs->pcr0 |= FSXP | FSRP; | |
486 | break; | |
487 | case SND_SOC_DAIFMT_IB_IF: | |
488 | break; | |
489 | default: | |
490 | return -EINVAL; | |
491 | } | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
8687eb8b | 496 | static int omap_mcbsp_dai_set_clkdiv(struct snd_soc_dai *cpu_dai, |
2e74796a JN |
497 | int div_id, int div) |
498 | { | |
f0fba2ad | 499 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
2e74796a JN |
500 | struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; |
501 | ||
502 | if (div_id != OMAP_MCBSP_CLKGDV) | |
503 | return -ENODEV; | |
504 | ||
5f63ef99 | 505 | mcbsp_data->clk_div = div; |
2e74796a JN |
506 | regs->srgr1 |= CLKGDV(div - 1); |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
8687eb8b | 511 | static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai, |
2e74796a JN |
512 | int clk_id, unsigned int freq, |
513 | int dir) | |
514 | { | |
f0fba2ad | 515 | struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai); |
2e74796a JN |
516 | struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs; |
517 | int err = 0; | |
518 | ||
cf4c87ab PW |
519 | /* The McBSP signal muxing functions are only available on McBSP1 */ |
520 | if (clk_id == OMAP_MCBSP_CLKR_SRC_CLKR || | |
521 | clk_id == OMAP_MCBSP_CLKR_SRC_CLKX || | |
522 | clk_id == OMAP_MCBSP_FSR_SRC_FSR || | |
523 | clk_id == OMAP_MCBSP_FSR_SRC_FSX) | |
524 | if (cpu_class_is_omap1() || mcbsp_data->bus_id != 0) | |
525 | return -EINVAL; | |
526 | ||
5f63ef99 GG |
527 | mcbsp_data->in_freq = freq; |
528 | ||
2e74796a JN |
529 | switch (clk_id) { |
530 | case OMAP_MCBSP_SYSCLK_CLK: | |
531 | regs->srgr2 |= CLKSM; | |
532 | break; | |
533 | case OMAP_MCBSP_SYSCLK_CLKS_FCLK: | |
d1358657 PW |
534 | if (cpu_class_is_omap1()) { |
535 | err = -EINVAL; | |
536 | break; | |
537 | } | |
538 | err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id, | |
539 | MCBSP_CLKS_PRCM_SRC); | |
540 | break; | |
2e74796a | 541 | case OMAP_MCBSP_SYSCLK_CLKS_EXT: |
d1358657 PW |
542 | if (cpu_class_is_omap1()) { |
543 | err = 0; | |
544 | break; | |
545 | } | |
546 | err = omap2_mcbsp_set_clks_src(mcbsp_data->bus_id, | |
547 | MCBSP_CLKS_PAD_SRC); | |
2e74796a JN |
548 | break; |
549 | ||
550 | case OMAP_MCBSP_SYSCLK_CLKX_EXT: | |
551 | regs->srgr2 |= CLKSM; | |
552 | case OMAP_MCBSP_SYSCLK_CLKR_EXT: | |
553 | regs->pcr0 |= SCLKME; | |
554 | break; | |
d2c0bdaa | 555 | |
cf4c87ab | 556 | |
d2c0bdaa | 557 | case OMAP_MCBSP_CLKR_SRC_CLKR: |
23353850 JK |
558 | if (cpu_class_is_omap1()) |
559 | break; | |
cf4c87ab PW |
560 | omap2_mcbsp1_mux_clkr_src(CLKR_SRC_CLKR); |
561 | break; | |
d2c0bdaa | 562 | case OMAP_MCBSP_CLKR_SRC_CLKX: |
23353850 JK |
563 | if (cpu_class_is_omap1()) |
564 | break; | |
cf4c87ab PW |
565 | omap2_mcbsp1_mux_clkr_src(CLKR_SRC_CLKX); |
566 | break; | |
d2c0bdaa | 567 | case OMAP_MCBSP_FSR_SRC_FSR: |
23353850 JK |
568 | if (cpu_class_is_omap1()) |
569 | break; | |
cf4c87ab PW |
570 | omap2_mcbsp1_mux_fsr_src(FSR_SRC_FSR); |
571 | break; | |
d2c0bdaa | 572 | case OMAP_MCBSP_FSR_SRC_FSX: |
23353850 JK |
573 | if (cpu_class_is_omap1()) |
574 | break; | |
cf4c87ab | 575 | omap2_mcbsp1_mux_fsr_src(FSR_SRC_FSX); |
d2c0bdaa | 576 | break; |
2e74796a JN |
577 | default: |
578 | err = -ENODEV; | |
579 | } | |
580 | ||
581 | return err; | |
582 | } | |
583 | ||
f0fba2ad | 584 | static struct snd_soc_dai_ops mcbsp_dai_ops = { |
6335d055 EM |
585 | .startup = omap_mcbsp_dai_startup, |
586 | .shutdown = omap_mcbsp_dai_shutdown, | |
587 | .trigger = omap_mcbsp_dai_trigger, | |
75581d24 | 588 | .delay = omap_mcbsp_dai_delay, |
6335d055 EM |
589 | .hw_params = omap_mcbsp_dai_hw_params, |
590 | .set_fmt = omap_mcbsp_dai_set_dai_fmt, | |
591 | .set_clkdiv = omap_mcbsp_dai_set_clkdiv, | |
592 | .set_sysclk = omap_mcbsp_dai_set_dai_sysclk, | |
593 | }; | |
594 | ||
f0fba2ad LG |
595 | static int mcbsp_dai_probe(struct snd_soc_dai *dai) |
596 | { | |
597 | mcbsp_data[dai->id].bus_id = dai->id; | |
598 | snd_soc_dai_set_drvdata(dai, &mcbsp_data[dai->id].bus_id); | |
599 | return 0; | |
8def464d JN |
600 | } |
601 | ||
f0fba2ad LG |
602 | static struct snd_soc_dai_driver omap_mcbsp_dai = |
603 | { | |
604 | .probe = mcbsp_dai_probe, | |
605 | .playback = { | |
606 | .channels_min = 1, | |
607 | .channels_max = 16, | |
608 | .rates = OMAP_MCBSP_RATES, | |
609 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE, | |
610 | }, | |
611 | .capture = { | |
612 | .channels_min = 1, | |
613 | .channels_max = 16, | |
614 | .rates = OMAP_MCBSP_RATES, | |
615 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE, | |
616 | }, | |
617 | .ops = &mcbsp_dai_ops, | |
2e74796a | 618 | }; |
8def464d | 619 | |
3484457f | 620 | static int omap_mcbsp_st_info_volsw(struct snd_kcontrol *kcontrol, |
83905c13 IK |
621 | struct snd_ctl_elem_info *uinfo) |
622 | { | |
623 | struct soc_mixer_control *mc = | |
624 | (struct soc_mixer_control *)kcontrol->private_value; | |
625 | int max = mc->max; | |
626 | int min = mc->min; | |
627 | ||
628 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
629 | uinfo->count = 1; | |
630 | uinfo->value.integer.min = min; | |
631 | uinfo->value.integer.max = max; | |
632 | return 0; | |
633 | } | |
634 | ||
635 | #define OMAP_MCBSP_ST_SET_CHANNEL_VOLUME(id, channel) \ | |
636 | static int \ | |
637 | omap_mcbsp##id##_set_st_ch##channel##_volume(struct snd_kcontrol *kc, \ | |
638 | struct snd_ctl_elem_value *uc) \ | |
639 | { \ | |
640 | struct soc_mixer_control *mc = \ | |
641 | (struct soc_mixer_control *)kc->private_value; \ | |
642 | int max = mc->max; \ | |
643 | int min = mc->min; \ | |
644 | int val = uc->value.integer.value[0]; \ | |
645 | \ | |
646 | if (val < min || val > max) \ | |
647 | return -EINVAL; \ | |
648 | \ | |
649 | /* OMAP McBSP implementation uses index values 0..4 */ \ | |
650 | return omap_st_set_chgain((id)-1, channel, val); \ | |
651 | } | |
652 | ||
653 | #define OMAP_MCBSP_ST_GET_CHANNEL_VOLUME(id, channel) \ | |
654 | static int \ | |
655 | omap_mcbsp##id##_get_st_ch##channel##_volume(struct snd_kcontrol *kc, \ | |
656 | struct snd_ctl_elem_value *uc) \ | |
657 | { \ | |
658 | s16 chgain; \ | |
659 | \ | |
660 | if (omap_st_get_chgain((id)-1, channel, &chgain)) \ | |
661 | return -EAGAIN; \ | |
662 | \ | |
663 | uc->value.integer.value[0] = chgain; \ | |
664 | return 0; \ | |
665 | } | |
666 | ||
667 | OMAP_MCBSP_ST_SET_CHANNEL_VOLUME(2, 0) | |
668 | OMAP_MCBSP_ST_SET_CHANNEL_VOLUME(2, 1) | |
669 | OMAP_MCBSP_ST_SET_CHANNEL_VOLUME(3, 0) | |
670 | OMAP_MCBSP_ST_SET_CHANNEL_VOLUME(3, 1) | |
671 | OMAP_MCBSP_ST_GET_CHANNEL_VOLUME(2, 0) | |
672 | OMAP_MCBSP_ST_GET_CHANNEL_VOLUME(2, 1) | |
673 | OMAP_MCBSP_ST_GET_CHANNEL_VOLUME(3, 0) | |
674 | OMAP_MCBSP_ST_GET_CHANNEL_VOLUME(3, 1) | |
675 | ||
676 | static int omap_mcbsp_st_put_mode(struct snd_kcontrol *kcontrol, | |
677 | struct snd_ctl_elem_value *ucontrol) | |
678 | { | |
679 | struct soc_mixer_control *mc = | |
680 | (struct soc_mixer_control *)kcontrol->private_value; | |
681 | u8 value = ucontrol->value.integer.value[0]; | |
682 | ||
683 | if (value == omap_st_is_enabled(mc->reg)) | |
684 | return 0; | |
685 | ||
686 | if (value) | |
687 | omap_st_enable(mc->reg); | |
688 | else | |
689 | omap_st_disable(mc->reg); | |
690 | ||
691 | return 1; | |
692 | } | |
693 | ||
694 | static int omap_mcbsp_st_get_mode(struct snd_kcontrol *kcontrol, | |
695 | struct snd_ctl_elem_value *ucontrol) | |
696 | { | |
697 | struct soc_mixer_control *mc = | |
698 | (struct soc_mixer_control *)kcontrol->private_value; | |
699 | ||
700 | ucontrol->value.integer.value[0] = omap_st_is_enabled(mc->reg); | |
701 | return 0; | |
702 | } | |
703 | ||
704 | static const struct snd_kcontrol_new omap_mcbsp2_st_controls[] = { | |
705 | SOC_SINGLE_EXT("McBSP2 Sidetone Switch", 1, 0, 1, 0, | |
706 | omap_mcbsp_st_get_mode, omap_mcbsp_st_put_mode), | |
707 | OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP2 Sidetone Channel 0 Volume", | |
708 | -32768, 32767, | |
709 | omap_mcbsp2_get_st_ch0_volume, | |
710 | omap_mcbsp2_set_st_ch0_volume), | |
711 | OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP2 Sidetone Channel 1 Volume", | |
712 | -32768, 32767, | |
713 | omap_mcbsp2_get_st_ch1_volume, | |
714 | omap_mcbsp2_set_st_ch1_volume), | |
715 | }; | |
716 | ||
717 | static const struct snd_kcontrol_new omap_mcbsp3_st_controls[] = { | |
718 | SOC_SINGLE_EXT("McBSP3 Sidetone Switch", 2, 0, 1, 0, | |
719 | omap_mcbsp_st_get_mode, omap_mcbsp_st_put_mode), | |
720 | OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP3 Sidetone Channel 0 Volume", | |
721 | -32768, 32767, | |
722 | omap_mcbsp3_get_st_ch0_volume, | |
723 | omap_mcbsp3_set_st_ch0_volume), | |
724 | OMAP_MCBSP_SOC_SINGLE_S16_EXT("McBSP3 Sidetone Channel 1 Volume", | |
725 | -32768, 32767, | |
726 | omap_mcbsp3_get_st_ch1_volume, | |
727 | omap_mcbsp3_set_st_ch1_volume), | |
728 | }; | |
729 | ||
730 | int omap_mcbsp_st_add_controls(struct snd_soc_codec *codec, int mcbsp_id) | |
731 | { | |
732 | if (!cpu_is_omap34xx()) | |
733 | return -ENODEV; | |
734 | ||
735 | switch (mcbsp_id) { | |
736 | case 1: /* McBSP 2 */ | |
737 | return snd_soc_add_controls(codec, omap_mcbsp2_st_controls, | |
738 | ARRAY_SIZE(omap_mcbsp2_st_controls)); | |
739 | case 2: /* McBSP 3 */ | |
740 | return snd_soc_add_controls(codec, omap_mcbsp3_st_controls, | |
741 | ARRAY_SIZE(omap_mcbsp3_st_controls)); | |
742 | default: | |
743 | break; | |
744 | } | |
745 | ||
746 | return -EINVAL; | |
747 | } | |
748 | EXPORT_SYMBOL_GPL(omap_mcbsp_st_add_controls); | |
749 | ||
f0fba2ad LG |
750 | static __devinit int asoc_mcbsp_probe(struct platform_device *pdev) |
751 | { | |
752 | return snd_soc_register_dai(&pdev->dev, &omap_mcbsp_dai); | |
753 | } | |
754 | ||
755 | static int __devexit asoc_mcbsp_remove(struct platform_device *pdev) | |
756 | { | |
757 | snd_soc_unregister_dai(&pdev->dev); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static struct platform_driver asoc_mcbsp_driver = { | |
762 | .driver = { | |
763 | .name = "omap-mcbsp-dai", | |
764 | .owner = THIS_MODULE, | |
765 | }, | |
766 | ||
767 | .probe = asoc_mcbsp_probe, | |
768 | .remove = __devexit_p(asoc_mcbsp_remove), | |
769 | }; | |
770 | ||
f73f2a6a | 771 | static int __init snd_omap_mcbsp_init(void) |
3f4b783c | 772 | { |
f0fba2ad | 773 | return platform_driver_register(&asoc_mcbsp_driver); |
3f4b783c | 774 | } |
f73f2a6a | 775 | module_init(snd_omap_mcbsp_init); |
3f4b783c | 776 | |
f73f2a6a | 777 | static void __exit snd_omap_mcbsp_exit(void) |
3f4b783c | 778 | { |
f0fba2ad | 779 | platform_driver_unregister(&asoc_mcbsp_driver); |
3f4b783c | 780 | } |
f73f2a6a | 781 | module_exit(snd_omap_mcbsp_exit); |
3f4b783c | 782 | |
b08f7a62 | 783 | MODULE_AUTHOR("Jarkko Nikula <jhnikula@gmail.com>"); |
2e74796a JN |
784 | MODULE_DESCRIPTION("OMAP I2S SoC Interface"); |
785 | MODULE_LICENSE("GPL"); |