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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / soc / pxa / pxa-ssp.c
bloba1fd23e0e3d00d5aa5fb93a53c2c106a74731cb0
1 /*
2 * pxa-ssp.c -- ALSA Soc Audio Layer
3 *
4 * Copyright 2005,2008 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood
6 * Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * TODO:
14 * o Test network mode for > 16bit sample size
15 */
16
17 #include <linux/init.h>
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/platform_device.h>
21 #include <linux/clk.h>
22 #include <linux/io.h>
23
24 #include <asm/irq.h>
25
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/initval.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc.h>
31 #include <sound/pxa2xx-lib.h>
32
33 #include <mach/hardware.h>
34 #include <mach/dma.h>
35 #include <mach/audio.h>
36 #include <plat/ssp.h>
37
38 #include "pxa2xx-pcm.h"
39 #include "pxa-ssp.h"
40
41 /*
42 * SSP audio private data
43 */
44 struct ssp_priv {
45 struct ssp_device *ssp;
46 unsigned int sysclk;
47 int dai_fmt;
48 #ifdef CONFIG_PM
49 uint32_t cr0;
50 uint32_t cr1;
51 uint32_t to;
52 uint32_t psp;
53 #endif
54 };
55
56 static void dump_registers(struct ssp_device *ssp)
57 {
58 dev_dbg(&ssp->pdev->dev, "SSCR0 0x%08x SSCR1 0x%08x SSTO 0x%08x\n",
59 pxa_ssp_read_reg(ssp, SSCR0), pxa_ssp_read_reg(ssp, SSCR1),
60 pxa_ssp_read_reg(ssp, SSTO));
61
62 dev_dbg(&ssp->pdev->dev, "SSPSP 0x%08x SSSR 0x%08x SSACD 0x%08x\n",
63 pxa_ssp_read_reg(ssp, SSPSP), pxa_ssp_read_reg(ssp, SSSR),
64 pxa_ssp_read_reg(ssp, SSACD));
65 }
66
67 static void pxa_ssp_enable(struct ssp_device *ssp)
68 {
69 uint32_t sscr0;
70
71 sscr0 = __raw_readl(ssp->mmio_base + SSCR0) | SSCR0_SSE;
72 __raw_writel(sscr0, ssp->mmio_base + SSCR0);
73 }
74
75 static void pxa_ssp_disable(struct ssp_device *ssp)
76 {
77 uint32_t sscr0;
78
79 sscr0 = __raw_readl(ssp->mmio_base + SSCR0) & ~SSCR0_SSE;
80 __raw_writel(sscr0, ssp->mmio_base + SSCR0);
81 }
82
83 struct pxa2xx_pcm_dma_data {
84 struct pxa2xx_pcm_dma_params params;
85 char name[20];
86 };
87
88 static struct pxa2xx_pcm_dma_params *
89 pxa_ssp_get_dma_params(struct ssp_device *ssp, int width4, int out)
90 {
91 struct pxa2xx_pcm_dma_data *dma;
92
93 dma = kzalloc(sizeof(struct pxa2xx_pcm_dma_data), GFP_KERNEL);
94 if (dma == NULL)
95 return NULL;
96
97 snprintf(dma->name, 20, "SSP%d PCM %s %s", ssp->port_id,
98 width4 ? "32-bit" : "16-bit", out ? "out" : "in");
99
100 dma->params.name = dma->name;
101 dma->params.drcmr = &DRCMR(out ? ssp->drcmr_tx : ssp->drcmr_rx);
102 dma->params.dcmd = (out ? (DCMD_INCSRCADDR | DCMD_FLOWTRG) :
103 (DCMD_INCTRGADDR | DCMD_FLOWSRC)) |
104 (width4 ? DCMD_WIDTH4 : DCMD_WIDTH2) | DCMD_BURST16;
105 dma->params.dev_addr = ssp->phys_base + SSDR;
106
107 return &dma->params;
108 }
109
110 static int pxa_ssp_startup(struct snd_pcm_substream *substream,
111 struct snd_soc_dai *dai)
112 {
113 struct snd_soc_pcm_runtime *rtd = substream->private_data;
114 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
115 struct ssp_priv *priv = cpu_dai->private_data;
116 struct ssp_device *ssp = priv->ssp;
117 int ret = 0;
118
119 if (!cpu_dai->active) {
120 clk_enable(ssp->clk);
121 pxa_ssp_disable(ssp);
122 }
123
124 kfree(snd_soc_dai_get_dma_data(cpu_dai, substream));
125 snd_soc_dai_set_dma_data(cpu_dai, substream, NULL);
126
127 return ret;
128 }
129
130 static void pxa_ssp_shutdown(struct snd_pcm_substream *substream,
131 struct snd_soc_dai *dai)
132 {
133 struct snd_soc_pcm_runtime *rtd = substream->private_data;
134 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
135 struct ssp_priv *priv = cpu_dai->private_data;
136 struct ssp_device *ssp = priv->ssp;
137
138 if (!cpu_dai->active) {
139 pxa_ssp_disable(ssp);
140 clk_disable(ssp->clk);
141 }
142
143 kfree(snd_soc_dai_get_dma_data(cpu_dai, substream));
144 snd_soc_dai_set_dma_data(cpu_dai, substream, NULL);
145 }
146
147 #ifdef CONFIG_PM
148
149 static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai)
150 {
151 struct ssp_priv *priv = cpu_dai->private_data;
152 struct ssp_device *ssp = priv->ssp;
153
154 if (!cpu_dai->active)
155 clk_enable(ssp->clk);
156
157 priv->cr0 = __raw_readl(ssp->mmio_base + SSCR0);
158 priv->cr1 = __raw_readl(ssp->mmio_base + SSCR1);
159 priv->to = __raw_readl(ssp->mmio_base + SSTO);
160 priv->psp = __raw_readl(ssp->mmio_base + SSPSP);
161
162 pxa_ssp_disable(ssp);
163 clk_disable(ssp->clk);
164 return 0;
165 }
166
167 static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai)
168 {
169 struct ssp_priv *priv = cpu_dai->private_data;
170 struct ssp_device *ssp = priv->ssp;
171 uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE;
172
173 clk_enable(ssp->clk);
174
175 __raw_writel(sssr, ssp->mmio_base + SSSR);
176 __raw_writel(priv->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0);
177 __raw_writel(priv->cr1, ssp->mmio_base + SSCR1);
178 __raw_writel(priv->to, ssp->mmio_base + SSTO);
179 __raw_writel(priv->psp, ssp->mmio_base + SSPSP);
180
181 if (cpu_dai->active)
182 pxa_ssp_enable(ssp);
183 else
184 clk_disable(ssp->clk);
185
186 return 0;
187 }
188
189 #else
190 #define pxa_ssp_suspend NULL
191 #define pxa_ssp_resume NULL
192 #endif
193
194 /**
195 * ssp_set_clkdiv - set SSP clock divider
196 * @div: serial clock rate divider
197 */
198 static void pxa_ssp_set_scr(struct ssp_device *ssp, u32 div)
199 {
200 u32 sscr0 = pxa_ssp_read_reg(ssp, SSCR0);
201
202 if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP) {
203 sscr0 &= ~0x0000ff00;
204 sscr0 |= ((div - 2)/2) << 8; /* 2..512 */
205 } else {
206 sscr0 &= ~0x000fff00;
207 sscr0 |= (div - 1) << 8; /* 1..4096 */
208 }
209 pxa_ssp_write_reg(ssp, SSCR0, sscr0);
210 }
211
212 /**
213 * pxa_ssp_get_clkdiv - get SSP clock divider
214 */
215 static u32 pxa_ssp_get_scr(struct ssp_device *ssp)
216 {
217 u32 sscr0 = pxa_ssp_read_reg(ssp, SSCR0);
218 u32 div;
219
220 if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP)
221 div = ((sscr0 >> 8) & 0xff) * 2 + 2;
222 else
223 div = ((sscr0 >> 8) & 0xfff) + 1;
224 return div;
225 }
226
227 /*
228 * Set the SSP ports SYSCLK.
229 */
230 static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
231 int clk_id, unsigned int freq, int dir)
232 {
233 struct ssp_priv *priv = cpu_dai->private_data;
234 struct ssp_device *ssp = priv->ssp;
235 int val;
236
237 u32 sscr0 = pxa_ssp_read_reg(ssp, SSCR0) &
238 ~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
239
240 dev_dbg(&ssp->pdev->dev,
241 "pxa_ssp_set_dai_sysclk id: %d, clk_id %d, freq %u\n",
242 cpu_dai->id, clk_id, freq);
243
244 switch (clk_id) {
245 case PXA_SSP_CLK_NET_PLL:
246 sscr0 |= SSCR0_MOD;
247 break;
248 case PXA_SSP_CLK_PLL:
249 /* Internal PLL is fixed */
250 if (cpu_is_pxa25x())
251 priv->sysclk = 1843200;
252 else
253 priv->sysclk = 13000000;
254 break;
255 case PXA_SSP_CLK_EXT:
256 priv->sysclk = freq;
257 sscr0 |= SSCR0_ECS;
258 break;
259 case PXA_SSP_CLK_NET:
260 priv->sysclk = freq;
261 sscr0 |= SSCR0_NCS | SSCR0_MOD;
262 break;
263 case PXA_SSP_CLK_AUDIO:
264 priv->sysclk = 0;
265 pxa_ssp_set_scr(ssp, 1);
266 sscr0 |= SSCR0_ACS;
267 break;
268 default:
269 return -ENODEV;
270 }
271
272 /* The SSP clock must be disabled when changing SSP clock mode
273 * on PXA2xx. On PXA3xx it must be enabled when doing so. */
274 if (!cpu_is_pxa3xx())
275 clk_disable(ssp->clk);
276 val = pxa_ssp_read_reg(ssp, SSCR0) | sscr0;
277 pxa_ssp_write_reg(ssp, SSCR0, val);
278 if (!cpu_is_pxa3xx())
279 clk_enable(ssp->clk);
280
281 return 0;
282 }
283
284 /*
285 * Set the SSP clock dividers.
286 */
287 static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
288 int div_id, int div)
289 {
290 struct ssp_priv *priv = cpu_dai->private_data;
291 struct ssp_device *ssp = priv->ssp;
292 int val;
293
294 switch (div_id) {
295 case PXA_SSP_AUDIO_DIV_ACDS:
296 val = (pxa_ssp_read_reg(ssp, SSACD) & ~0x7) | SSACD_ACDS(div);
297 pxa_ssp_write_reg(ssp, SSACD, val);
298 break;
299 case PXA_SSP_AUDIO_DIV_SCDB:
300 val = pxa_ssp_read_reg(ssp, SSACD);
301 val &= ~SSACD_SCDB;
302 #if defined(CONFIG_PXA3xx)
303 if (cpu_is_pxa3xx())
304 val &= ~SSACD_SCDX8;
305 #endif
306 switch (div) {
307 case PXA_SSP_CLK_SCDB_1:
308 val |= SSACD_SCDB;
309 break;
310 case PXA_SSP_CLK_SCDB_4:
311 break;
312 #if defined(CONFIG_PXA3xx)
313 case PXA_SSP_CLK_SCDB_8:
314 if (cpu_is_pxa3xx())
315 val |= SSACD_SCDX8;
316 else
317 return -EINVAL;
318 break;
319 #endif
320 default:
321 return -EINVAL;
322 }
323 pxa_ssp_write_reg(ssp, SSACD, val);
324 break;
325 case PXA_SSP_DIV_SCR:
326 pxa_ssp_set_scr(ssp, div);
327 break;
328 default:
329 return -ENODEV;
330 }
331
332 return 0;
333 }
334
335 /*
336 * Configure the PLL frequency pxa27x and (afaik - pxa320 only)
337 */
338 static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
339 int source, unsigned int freq_in, unsigned int freq_out)
340 {
341 struct ssp_priv *priv = cpu_dai->private_data;
342 struct ssp_device *ssp = priv->ssp;
343 u32 ssacd = pxa_ssp_read_reg(ssp, SSACD) & ~0x70;
344
345 #if defined(CONFIG_PXA3xx)
346 if (cpu_is_pxa3xx())
347 pxa_ssp_write_reg(ssp, SSACDD, 0);
348 #endif
349
350 switch (freq_out) {
351 case 5622000:
352 break;
353 case 11345000:
354 ssacd |= (0x1 << 4);
355 break;
356 case 12235000:
357 ssacd |= (0x2 << 4);
358 break;
359 case 14857000:
360 ssacd |= (0x3 << 4);
361 break;
362 case 32842000:
363 ssacd |= (0x4 << 4);
364 break;
365 case 48000000:
366 ssacd |= (0x5 << 4);
367 break;
368 case 0:
369 /* Disable */
370 break;
371
372 default:
373 #ifdef CONFIG_PXA3xx
374 /* PXA3xx has a clock ditherer which can be used to generate
375 * a wider range of frequencies - calculate a value for it.
376 */
377 if (cpu_is_pxa3xx()) {
378 u32 val;
379 u64 tmp = 19968;
380 tmp *= 1000000;
381 do_div(tmp, freq_out);
382 val = tmp;
383
384 val = (val << 16) | 64;
385 pxa_ssp_write_reg(ssp, SSACDD, val);
386
387 ssacd |= (0x6 << 4);
388
389 dev_dbg(&ssp->pdev->dev,
390 "Using SSACDD %x to supply %uHz\n",
391 val, freq_out);
392 break;
393 }
394 #endif
395
396 return -EINVAL;
397 }
398
399 pxa_ssp_write_reg(ssp, SSACD, ssacd);
400
401 return 0;
402 }
403
404 /*
405 * Set the active slots in TDM/Network mode
406 */
407 static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
408 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
409 {
410 struct ssp_priv *priv = cpu_dai->private_data;
411 struct ssp_device *ssp = priv->ssp;
412 u32 sscr0;
413
414 sscr0 = pxa_ssp_read_reg(ssp, SSCR0);
415 sscr0 &= ~(SSCR0_MOD | SSCR0_SlotsPerFrm(8) | SSCR0_EDSS | SSCR0_DSS);
416
417 /* set slot width */
418 if (slot_width > 16)
419 sscr0 |= SSCR0_EDSS | SSCR0_DataSize(slot_width - 16);
420 else
421 sscr0 |= SSCR0_DataSize(slot_width);
422
423 if (slots > 1) {
424 /* enable network mode */
425 sscr0 |= SSCR0_MOD;
426
427 /* set number of active slots */
428 sscr0 |= SSCR0_SlotsPerFrm(slots);
429
430 /* set active slot mask */
431 pxa_ssp_write_reg(ssp, SSTSA, tx_mask);
432 pxa_ssp_write_reg(ssp, SSRSA, rx_mask);
433 }
434 pxa_ssp_write_reg(ssp, SSCR0, sscr0);
435
436 return 0;
437 }
438
439 /*
440 * Tristate the SSP DAI lines
441 */
442 static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai,
443 int tristate)
444 {
445 struct ssp_priv *priv = cpu_dai->private_data;
446 struct ssp_device *ssp = priv->ssp;
447 u32 sscr1;
448
449 sscr1 = pxa_ssp_read_reg(ssp, SSCR1);
450 if (tristate)
451 sscr1 &= ~SSCR1_TTE;
452 else
453 sscr1 |= SSCR1_TTE;
454 pxa_ssp_write_reg(ssp, SSCR1, sscr1);
455
456 return 0;
457 }
458
459 /*
460 * Set up the SSP DAI format.
461 * The SSP Port must be inactive before calling this function as the
462 * physical interface format is changed.
463 */
464 static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
465 unsigned int fmt)
466 {
467 struct ssp_priv *priv = cpu_dai->private_data;
468 struct ssp_device *ssp = priv->ssp;
469 u32 sscr0;
470 u32 sscr1;
471 u32 sspsp;
472
473 /* check if we need to change anything at all */
474 if (priv->dai_fmt == fmt)
475 return 0;
476
477 /* we can only change the settings if the port is not in use */
478 if (pxa_ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) {
479 dev_err(&ssp->pdev->dev,
480 "can't change hardware dai format: stream is in use");
481 return -EINVAL;
482 }
483
484 /* reset port settings */
485 sscr0 = pxa_ssp_read_reg(ssp, SSCR0) &
486 (SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
487 sscr1 = SSCR1_RxTresh(8) | SSCR1_TxTresh(7);
488 sspsp = 0;
489
490 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
491 case SND_SOC_DAIFMT_CBM_CFM:
492 sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR;
493 break;
494 case SND_SOC_DAIFMT_CBM_CFS:
495 sscr1 |= SSCR1_SCLKDIR;
496 break;
497 case SND_SOC_DAIFMT_CBS_CFS:
498 break;
499 default:
500 return -EINVAL;
501 }
502
503 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
504 case SND_SOC_DAIFMT_NB_NF:
505 sspsp |= SSPSP_SFRMP;
506 break;
507 case SND_SOC_DAIFMT_NB_IF:
508 break;
509 case SND_SOC_DAIFMT_IB_IF:
510 sspsp |= SSPSP_SCMODE(2);
511 break;
512 case SND_SOC_DAIFMT_IB_NF:
513 sspsp |= SSPSP_SCMODE(2) | SSPSP_SFRMP;
514 break;
515 default:
516 return -EINVAL;
517 }
518
519 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
520 case SND_SOC_DAIFMT_I2S:
521 sscr0 |= SSCR0_PSP;
522 sscr1 |= SSCR1_RWOT | SSCR1_TRAIL;
523 /* See hw_params() */
524 break;
525
526 case SND_SOC_DAIFMT_DSP_A:
527 sspsp |= SSPSP_FSRT;
528 case SND_SOC_DAIFMT_DSP_B:
529 sscr0 |= SSCR0_MOD | SSCR0_PSP;
530 sscr1 |= SSCR1_TRAIL | SSCR1_RWOT;
531 break;
532
533 default:
534 return -EINVAL;
535 }
536
537 pxa_ssp_write_reg(ssp, SSCR0, sscr0);
538 pxa_ssp_write_reg(ssp, SSCR1, sscr1);
539 pxa_ssp_write_reg(ssp, SSPSP, sspsp);
540
541 dump_registers(ssp);
542
543 /* Since we are configuring the timings for the format by hand
544 * we have to defer some things until hw_params() where we
545 * know parameters like the sample size.
546 */
547 priv->dai_fmt = fmt;
548
549 return 0;
550 }
551
552 /*
553 * Set the SSP audio DMA parameters and sample size.
554 * Can be called multiple times by oss emulation.
555 */
556 static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
557 struct snd_pcm_hw_params *params,
558 struct snd_soc_dai *dai)
559 {
560 struct snd_soc_pcm_runtime *rtd = substream->private_data;
561 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
562 struct ssp_priv *priv = cpu_dai->private_data;
563 struct ssp_device *ssp = priv->ssp;
564 int chn = params_channels(params);
565 u32 sscr0;
566 u32 sspsp;
567 int width = snd_pcm_format_physical_width(params_format(params));
568 int ttsa = pxa_ssp_read_reg(ssp, SSTSA) & 0xf;
569 struct pxa2xx_pcm_dma_params *dma_data;
570
571 dma_data = snd_soc_dai_get_dma_data(dai, substream);
572
573 /* generate correct DMA params */
574 kfree(dma_data);
575
576 /* Network mode with one active slot (ttsa == 1) can be used
577 * to force 16-bit frame width on the wire (for S16_LE), even
578 * with two channels. Use 16-bit DMA transfers for this case.
579 */
580 dma_data = pxa_ssp_get_dma_params(ssp,
581 ((chn == 2) && (ttsa != 1)) || (width == 32),
582 substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
583
584 snd_soc_dai_set_dma_data(dai, substream, dma_data);
585
586 /* we can only change the settings if the port is not in use */
587 if (pxa_ssp_read_reg(ssp, SSCR0) & SSCR0_SSE)
588 return 0;
589
590 /* clear selected SSP bits */
591 sscr0 = pxa_ssp_read_reg(ssp, SSCR0) & ~(SSCR0_DSS | SSCR0_EDSS);
592 pxa_ssp_write_reg(ssp, SSCR0, sscr0);
593
594 /* bit size */
595 sscr0 = pxa_ssp_read_reg(ssp, SSCR0);
596 switch (params_format(params)) {
597 case SNDRV_PCM_FORMAT_S16_LE:
598 #ifdef CONFIG_PXA3xx
599 if (cpu_is_pxa3xx())
600 sscr0 |= SSCR0_FPCKE;
601 #endif
602 sscr0 |= SSCR0_DataSize(16);
603 break;
604 case SNDRV_PCM_FORMAT_S24_LE:
605 sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8));
606 break;
607 case SNDRV_PCM_FORMAT_S32_LE:
608 sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(16));
609 break;
610 }
611 pxa_ssp_write_reg(ssp, SSCR0, sscr0);
612
613 switch (priv->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
614 case SND_SOC_DAIFMT_I2S:
615 sspsp = pxa_ssp_read_reg(ssp, SSPSP);
616
617 if ((pxa_ssp_get_scr(ssp) == 4) && (width == 16)) {
618 /* This is a special case where the bitclk is 64fs
619 * and we're not dealing with 2*32 bits of audio
620 * samples.
621 *
622 * The SSP values used for that are all found out by
623 * trying and failing a lot; some of the registers
624 * needed for that mode are only available on PXA3xx.
625 */
626
627 #ifdef CONFIG_PXA3xx
628 if (!cpu_is_pxa3xx())
629 return -EINVAL;
630
631 sspsp |= SSPSP_SFRMWDTH(width * 2);
632 sspsp |= SSPSP_SFRMDLY(width * 4);
633 sspsp |= SSPSP_EDMYSTOP(3);
634 sspsp |= SSPSP_DMYSTOP(3);
635 sspsp |= SSPSP_DMYSTRT(1);
636 #else
637 return -EINVAL;
638 #endif
639 } else {
640 /* The frame width is the width the LRCLK is
641 * asserted for; the delay is expressed in
642 * half cycle units. We need the extra cycle
643 * because the data starts clocking out one BCLK
644 * after LRCLK changes polarity.
645 */
646 sspsp |= SSPSP_SFRMWDTH(width + 1);
647 sspsp |= SSPSP_SFRMDLY((width + 1) * 2);
648 sspsp |= SSPSP_DMYSTRT(1);
649 }
650
651 pxa_ssp_write_reg(ssp, SSPSP, sspsp);
652 break;
653 default:
654 break;
655 }
656
657 /* When we use a network mode, we always require TDM slots
658 * - complain loudly and fail if they've not been set up yet.
659 */
660 if ((sscr0 & SSCR0_MOD) && !ttsa) {
661 dev_err(&ssp->pdev->dev, "No TDM timeslot configured\n");
662 return -EINVAL;
663 }
664
665 dump_registers(ssp);
666
667 return 0;
668 }
669
670 static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
671 struct snd_soc_dai *dai)
672 {
673 struct snd_soc_pcm_runtime *rtd = substream->private_data;
674 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
675 int ret = 0;
676 struct ssp_priv *priv = cpu_dai->private_data;
677 struct ssp_device *ssp = priv->ssp;
678 int val;
679
680 switch (cmd) {
681 case SNDRV_PCM_TRIGGER_RESUME:
682 pxa_ssp_enable(ssp);
683 break;
684 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
685 val = pxa_ssp_read_reg(ssp, SSCR1);
686 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
687 val |= SSCR1_TSRE;
688 else
689 val |= SSCR1_RSRE;
690 pxa_ssp_write_reg(ssp, SSCR1, val);
691 val = pxa_ssp_read_reg(ssp, SSSR);
692 pxa_ssp_write_reg(ssp, SSSR, val);
693 break;
694 case SNDRV_PCM_TRIGGER_START:
695 val = pxa_ssp_read_reg(ssp, SSCR1);
696 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
697 val |= SSCR1_TSRE;
698 else
699 val |= SSCR1_RSRE;
700 pxa_ssp_write_reg(ssp, SSCR1, val);
701 pxa_ssp_enable(ssp);
702 break;
703 case SNDRV_PCM_TRIGGER_STOP:
704 val = pxa_ssp_read_reg(ssp, SSCR1);
705 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
706 val &= ~SSCR1_TSRE;
707 else
708 val &= ~SSCR1_RSRE;
709 pxa_ssp_write_reg(ssp, SSCR1, val);
710 break;
711 case SNDRV_PCM_TRIGGER_SUSPEND:
712 pxa_ssp_disable(ssp);
713 break;
714 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
715 val = pxa_ssp_read_reg(ssp, SSCR1);
716 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
717 val &= ~SSCR1_TSRE;
718 else
719 val &= ~SSCR1_RSRE;
720 pxa_ssp_write_reg(ssp, SSCR1, val);
721 break;
722
723 default:
724 ret = -EINVAL;
725 }
726
727 dump_registers(ssp);
728
729 return ret;
730 }
731
732 static int pxa_ssp_probe(struct platform_device *pdev,
733 struct snd_soc_dai *dai)
734 {
735 struct ssp_priv *priv;
736 int ret;
737
738 priv = kzalloc(sizeof(struct ssp_priv), GFP_KERNEL);
739 if (!priv)
740 return -ENOMEM;
741
742 priv->ssp = pxa_ssp_request(dai->id + 1, "SoC audio");
743 if (priv->ssp == NULL) {
744 ret = -ENODEV;
745 goto err_priv;
746 }
747
748 priv->dai_fmt = (unsigned int) -1;
749 dai->private_data = priv;
750
751 return 0;
752
753 err_priv:
754 kfree(priv);
755 return ret;
756 }
757
758 static void pxa_ssp_remove(struct platform_device *pdev,
759 struct snd_soc_dai *dai)
760 {
761 struct ssp_priv *priv = dai->private_data;
762 pxa_ssp_free(priv->ssp);
763 }
764
765 #define PXA_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
766 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
767 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
768 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
769
770 #define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
771 SNDRV_PCM_FMTBIT_S24_LE | \
772 SNDRV_PCM_FMTBIT_S32_LE)
773
774 static struct snd_soc_dai_ops pxa_ssp_dai_ops = {
775 .startup = pxa_ssp_startup,
776 .shutdown = pxa_ssp_shutdown,
777 .trigger = pxa_ssp_trigger,
778 .hw_params = pxa_ssp_hw_params,
779 .set_sysclk = pxa_ssp_set_dai_sysclk,
780 .set_clkdiv = pxa_ssp_set_dai_clkdiv,
781 .set_pll = pxa_ssp_set_dai_pll,
782 .set_fmt = pxa_ssp_set_dai_fmt,
783 .set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
784 .set_tristate = pxa_ssp_set_dai_tristate,
785 };
786
787 struct snd_soc_dai pxa_ssp_dai[] = {
788 {
789 .name = "pxa2xx-ssp1",
790 .id = 0,
791 .probe = pxa_ssp_probe,
792 .remove = pxa_ssp_remove,
793 .suspend = pxa_ssp_suspend,
794 .resume = pxa_ssp_resume,
795 .playback = {
796 .channels_min = 1,
797 .channels_max = 8,
798 .rates = PXA_SSP_RATES,
799 .formats = PXA_SSP_FORMATS,
800 },
801 .capture = {
802 .channels_min = 1,
803 .channels_max = 8,
804 .rates = PXA_SSP_RATES,
805 .formats = PXA_SSP_FORMATS,
806 },
807 .ops = &pxa_ssp_dai_ops,
808 },
809 { .name = "pxa2xx-ssp2",
810 .id = 1,
811 .probe = pxa_ssp_probe,
812 .remove = pxa_ssp_remove,
813 .suspend = pxa_ssp_suspend,
814 .resume = pxa_ssp_resume,
815 .playback = {
816 .channels_min = 1,
817 .channels_max = 8,
818 .rates = PXA_SSP_RATES,
819 .formats = PXA_SSP_FORMATS,
820 },
821 .capture = {
822 .channels_min = 1,
823 .channels_max = 8,
824 .rates = PXA_SSP_RATES,
825 .formats = PXA_SSP_FORMATS,
826 },
827 .ops = &pxa_ssp_dai_ops,
828 },
829 {
830 .name = "pxa2xx-ssp3",
831 .id = 2,
832 .probe = pxa_ssp_probe,
833 .remove = pxa_ssp_remove,
834 .suspend = pxa_ssp_suspend,
835 .resume = pxa_ssp_resume,
836 .playback = {
837 .channels_min = 1,
838 .channels_max = 8,
839 .rates = PXA_SSP_RATES,
840 .formats = PXA_SSP_FORMATS,
841 },
842 .capture = {
843 .channels_min = 1,
844 .channels_max = 8,
845 .rates = PXA_SSP_RATES,
846 .formats = PXA_SSP_FORMATS,
847 },
848 .ops = &pxa_ssp_dai_ops,
849 },
850 {
851 .name = "pxa2xx-ssp4",
852 .id = 3,
853 .probe = pxa_ssp_probe,
854 .remove = pxa_ssp_remove,
855 .suspend = pxa_ssp_suspend,
856 .resume = pxa_ssp_resume,
857 .playback = {
858 .channels_min = 1,
859 .channels_max = 8,
860 .rates = PXA_SSP_RATES,
861 .formats = PXA_SSP_FORMATS,
862 },
863 .capture = {
864 .channels_min = 1,
865 .channels_max = 8,
866 .rates = PXA_SSP_RATES,
867 .formats = PXA_SSP_FORMATS,
868 },
869 .ops = &pxa_ssp_dai_ops,
870 },
871 };
872 EXPORT_SYMBOL_GPL(pxa_ssp_dai);
873
874 static int __init pxa_ssp_init(void)
875 {
876 return snd_soc_register_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
877 }
878 module_init(pxa_ssp_init);
879
880 static void __exit pxa_ssp_exit(void)
881 {
882 snd_soc_unregister_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
883 }
884 module_exit(pxa_ssp_exit);
885
886 /* Module information */
887 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
888 MODULE_DESCRIPTION("PXA SSP/PCM SoC Interface");
889 MODULE_LICENSE("GPL");
Tomato firmware and modifications.