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1b340bd7 MB |
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> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
1b340bd7 MB |
20 | #include <linux/platform_device.h> |
21 | #include <linux/clk.h> | |
22 | #include <linux/io.h> | |
23 | ||
0664678a PZ |
24 | #include <asm/irq.h> |
25 | ||
1b340bd7 MB |
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> | |
7ebc8d56 | 34 | #include <mach/dma.h> |
1b340bd7 MB |
35 | #include <mach/regs-ssp.h> |
36 | #include <mach/audio.h> | |
37 | #include <mach/ssp.h> | |
38 | ||
39 | #include "pxa2xx-pcm.h" | |
40 | #include "pxa-ssp.h" | |
41 | ||
42 | /* | |
43 | * SSP audio private data | |
44 | */ | |
45 | struct ssp_priv { | |
f9efc9df | 46 | struct ssp_device *ssp; |
1b340bd7 MB |
47 | unsigned int sysclk; |
48 | int dai_fmt; | |
49 | #ifdef CONFIG_PM | |
f9efc9df EM |
50 | uint32_t cr0; |
51 | uint32_t cr1; | |
52 | uint32_t to; | |
53 | uint32_t psp; | |
1b340bd7 MB |
54 | #endif |
55 | }; | |
56 | ||
1b340bd7 MB |
57 | static void dump_registers(struct ssp_device *ssp) |
58 | { | |
59 | dev_dbg(&ssp->pdev->dev, "SSCR0 0x%08x SSCR1 0x%08x SSTO 0x%08x\n", | |
60 | ssp_read_reg(ssp, SSCR0), ssp_read_reg(ssp, SSCR1), | |
61 | ssp_read_reg(ssp, SSTO)); | |
62 | ||
63 | dev_dbg(&ssp->pdev->dev, "SSPSP 0x%08x SSSR 0x%08x SSACD 0x%08x\n", | |
64 | ssp_read_reg(ssp, SSPSP), ssp_read_reg(ssp, SSSR), | |
65 | ssp_read_reg(ssp, SSACD)); | |
66 | } | |
67 | ||
f9efc9df EM |
68 | static void ssp_enable(struct ssp_device *ssp) |
69 | { | |
70 | uint32_t sscr0; | |
71 | ||
72 | sscr0 = __raw_readl(ssp->mmio_base + SSCR0) | SSCR0_SSE; | |
73 | __raw_writel(sscr0, ssp->mmio_base + SSCR0); | |
74 | } | |
75 | ||
76 | static void ssp_disable(struct ssp_device *ssp) | |
77 | { | |
78 | uint32_t sscr0; | |
79 | ||
80 | sscr0 = __raw_readl(ssp->mmio_base + SSCR0) & ~SSCR0_SSE; | |
81 | __raw_writel(sscr0, ssp->mmio_base + SSCR0); | |
82 | } | |
83 | ||
2d7e71fa EM |
84 | struct pxa2xx_pcm_dma_data { |
85 | struct pxa2xx_pcm_dma_params params; | |
86 | char name[20]; | |
1b340bd7 MB |
87 | }; |
88 | ||
2d7e71fa | 89 | static struct pxa2xx_pcm_dma_params * |
8eb9feab | 90 | ssp_get_dma_params(struct ssp_device *ssp, int width4, int out) |
2d7e71fa EM |
91 | { |
92 | struct pxa2xx_pcm_dma_data *dma; | |
93 | ||
94 | dma = kzalloc(sizeof(struct pxa2xx_pcm_dma_data), GFP_KERNEL); | |
95 | if (dma == NULL) | |
96 | return NULL; | |
97 | ||
98 | snprintf(dma->name, 20, "SSP%d PCM %s %s", ssp->port_id, | |
8eb9feab | 99 | width4 ? "32-bit" : "16-bit", out ? "out" : "in"); |
2d7e71fa EM |
100 | |
101 | dma->params.name = dma->name; | |
102 | dma->params.drcmr = &DRCMR(out ? ssp->drcmr_tx : ssp->drcmr_rx); | |
103 | dma->params.dcmd = (out ? (DCMD_INCSRCADDR | DCMD_FLOWTRG) : | |
104 | (DCMD_INCTRGADDR | DCMD_FLOWSRC)) | | |
8eb9feab | 105 | (width4 ? DCMD_WIDTH4 : DCMD_WIDTH2) | DCMD_BURST16; |
2d7e71fa EM |
106 | dma->params.dev_addr = ssp->phys_base + SSDR; |
107 | ||
108 | return &dma->params; | |
109 | } | |
110 | ||
dee89c4d MB |
111 | static int pxa_ssp_startup(struct snd_pcm_substream *substream, |
112 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
113 | { |
114 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
115 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
116 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 117 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
118 | int ret = 0; |
119 | ||
120 | if (!cpu_dai->active) { | |
f9efc9df EM |
121 | clk_enable(ssp->clk); |
122 | ssp_disable(ssp); | |
1b340bd7 | 123 | } |
2d7e71fa EM |
124 | |
125 | if (cpu_dai->dma_data) { | |
126 | kfree(cpu_dai->dma_data); | |
127 | cpu_dai->dma_data = NULL; | |
128 | } | |
1b340bd7 MB |
129 | return ret; |
130 | } | |
131 | ||
dee89c4d MB |
132 | static void pxa_ssp_shutdown(struct snd_pcm_substream *substream, |
133 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
134 | { |
135 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
136 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
137 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 138 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
139 | |
140 | if (!cpu_dai->active) { | |
f9efc9df EM |
141 | ssp_disable(ssp); |
142 | clk_disable(ssp->clk); | |
1b340bd7 | 143 | } |
2d7e71fa EM |
144 | |
145 | if (cpu_dai->dma_data) { | |
146 | kfree(cpu_dai->dma_data); | |
147 | cpu_dai->dma_data = NULL; | |
148 | } | |
1b340bd7 MB |
149 | } |
150 | ||
151 | #ifdef CONFIG_PM | |
152 | ||
dc7d7b83 | 153 | static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai) |
1b340bd7 MB |
154 | { |
155 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 156 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
157 | |
158 | if (!cpu_dai->active) | |
988addf8 | 159 | clk_enable(ssp->clk); |
1b340bd7 | 160 | |
f9efc9df EM |
161 | priv->cr0 = __raw_readl(ssp->mmio_base + SSCR0); |
162 | priv->cr1 = __raw_readl(ssp->mmio_base + SSCR1); | |
163 | priv->to = __raw_readl(ssp->mmio_base + SSTO); | |
164 | priv->psp = __raw_readl(ssp->mmio_base + SSPSP); | |
165 | ||
166 | ssp_disable(ssp); | |
167 | clk_disable(ssp->clk); | |
1b340bd7 MB |
168 | return 0; |
169 | } | |
170 | ||
dc7d7b83 | 171 | static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai) |
1b340bd7 MB |
172 | { |
173 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df EM |
174 | struct ssp_device *ssp = priv->ssp; |
175 | uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE; | |
1b340bd7 | 176 | |
f9efc9df EM |
177 | clk_enable(ssp->clk); |
178 | ||
179 | __raw_writel(sssr, ssp->mmio_base + SSSR); | |
f9efc9df EM |
180 | __raw_writel(priv->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0); |
181 | __raw_writel(priv->cr1, ssp->mmio_base + SSCR1); | |
182 | __raw_writel(priv->to, ssp->mmio_base + SSTO); | |
183 | __raw_writel(priv->psp, ssp->mmio_base + SSPSP); | |
026384d6 DM |
184 | |
185 | if (cpu_dai->active) | |
988addf8 | 186 | ssp_enable(ssp); |
026384d6 | 187 | else |
988addf8 | 188 | clk_disable(ssp->clk); |
1b340bd7 MB |
189 | |
190 | return 0; | |
191 | } | |
192 | ||
193 | #else | |
194 | #define pxa_ssp_suspend NULL | |
195 | #define pxa_ssp_resume NULL | |
196 | #endif | |
197 | ||
198 | /** | |
199 | * ssp_set_clkdiv - set SSP clock divider | |
200 | * @div: serial clock rate divider | |
201 | */ | |
1a297286 | 202 | static void ssp_set_scr(struct ssp_device *ssp, u32 div) |
1b340bd7 | 203 | { |
1a297286 PZ |
204 | u32 sscr0 = ssp_read_reg(ssp, SSCR0); |
205 | ||
206 | if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP) { | |
207 | sscr0 &= ~0x0000ff00; | |
208 | sscr0 |= ((div - 2)/2) << 8; /* 2..512 */ | |
209 | } else { | |
210 | sscr0 &= ~0x000fff00; | |
211 | sscr0 |= (div - 1) << 8; /* 1..4096 */ | |
212 | } | |
213 | ssp_write_reg(ssp, SSCR0, sscr0); | |
214 | } | |
215 | ||
216 | /** | |
217 | * ssp_get_clkdiv - get SSP clock divider | |
218 | */ | |
219 | static u32 ssp_get_scr(struct ssp_device *ssp) | |
220 | { | |
221 | u32 sscr0 = ssp_read_reg(ssp, SSCR0); | |
222 | u32 div; | |
1b340bd7 | 223 | |
1a297286 PZ |
224 | if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP) |
225 | div = ((sscr0 >> 8) & 0xff) * 2 + 2; | |
226 | else | |
227 | div = ((sscr0 >> 8) & 0xfff) + 1; | |
228 | return div; | |
1b340bd7 MB |
229 | } |
230 | ||
231 | /* | |
232 | * Set the SSP ports SYSCLK. | |
233 | */ | |
234 | static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai, | |
235 | int clk_id, unsigned int freq, int dir) | |
236 | { | |
237 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 238 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
239 | int val; |
240 | ||
241 | u32 sscr0 = ssp_read_reg(ssp, SSCR0) & | |
20a41eac | 242 | ~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS); |
1b340bd7 MB |
243 | |
244 | dev_dbg(&ssp->pdev->dev, | |
449bd54d | 245 | "pxa_ssp_set_dai_sysclk id: %d, clk_id %d, freq %u\n", |
1b340bd7 MB |
246 | cpu_dai->id, clk_id, freq); |
247 | ||
248 | switch (clk_id) { | |
249 | case PXA_SSP_CLK_NET_PLL: | |
250 | sscr0 |= SSCR0_MOD; | |
251 | break; | |
252 | case PXA_SSP_CLK_PLL: | |
253 | /* Internal PLL is fixed */ | |
254 | if (cpu_is_pxa25x()) | |
255 | priv->sysclk = 1843200; | |
256 | else | |
257 | priv->sysclk = 13000000; | |
258 | break; | |
259 | case PXA_SSP_CLK_EXT: | |
260 | priv->sysclk = freq; | |
261 | sscr0 |= SSCR0_ECS; | |
262 | break; | |
263 | case PXA_SSP_CLK_NET: | |
264 | priv->sysclk = freq; | |
265 | sscr0 |= SSCR0_NCS | SSCR0_MOD; | |
266 | break; | |
267 | case PXA_SSP_CLK_AUDIO: | |
268 | priv->sysclk = 0; | |
1a297286 | 269 | ssp_set_scr(ssp, 1); |
20a41eac | 270 | sscr0 |= SSCR0_ACS; |
1b340bd7 MB |
271 | break; |
272 | default: | |
273 | return -ENODEV; | |
274 | } | |
275 | ||
276 | /* The SSP clock must be disabled when changing SSP clock mode | |
277 | * on PXA2xx. On PXA3xx it must be enabled when doing so. */ | |
278 | if (!cpu_is_pxa3xx()) | |
f9efc9df | 279 | clk_disable(ssp->clk); |
1b340bd7 MB |
280 | val = ssp_read_reg(ssp, SSCR0) | sscr0; |
281 | ssp_write_reg(ssp, SSCR0, val); | |
282 | if (!cpu_is_pxa3xx()) | |
f9efc9df | 283 | clk_enable(ssp->clk); |
1b340bd7 MB |
284 | |
285 | return 0; | |
286 | } | |
287 | ||
288 | /* | |
289 | * Set the SSP clock dividers. | |
290 | */ | |
291 | static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai, | |
292 | int div_id, int div) | |
293 | { | |
294 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 295 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
296 | int val; |
297 | ||
298 | switch (div_id) { | |
299 | case PXA_SSP_AUDIO_DIV_ACDS: | |
300 | val = (ssp_read_reg(ssp, SSACD) & ~0x7) | SSACD_ACDS(div); | |
301 | ssp_write_reg(ssp, SSACD, val); | |
302 | break; | |
303 | case PXA_SSP_AUDIO_DIV_SCDB: | |
304 | val = ssp_read_reg(ssp, SSACD); | |
305 | val &= ~SSACD_SCDB; | |
306 | #if defined(CONFIG_PXA3xx) | |
307 | if (cpu_is_pxa3xx()) | |
308 | val &= ~SSACD_SCDX8; | |
309 | #endif | |
310 | switch (div) { | |
311 | case PXA_SSP_CLK_SCDB_1: | |
312 | val |= SSACD_SCDB; | |
313 | break; | |
314 | case PXA_SSP_CLK_SCDB_4: | |
315 | break; | |
316 | #if defined(CONFIG_PXA3xx) | |
317 | case PXA_SSP_CLK_SCDB_8: | |
318 | if (cpu_is_pxa3xx()) | |
319 | val |= SSACD_SCDX8; | |
320 | else | |
321 | return -EINVAL; | |
322 | break; | |
323 | #endif | |
324 | default: | |
325 | return -EINVAL; | |
326 | } | |
327 | ssp_write_reg(ssp, SSACD, val); | |
328 | break; | |
329 | case PXA_SSP_DIV_SCR: | |
1a297286 | 330 | ssp_set_scr(ssp, div); |
1b340bd7 MB |
331 | break; |
332 | default: | |
333 | return -ENODEV; | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | /* | |
340 | * Configure the PLL frequency pxa27x and (afaik - pxa320 only) | |
341 | */ | |
85488037 MB |
342 | static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id, |
343 | int source, unsigned int freq_in, unsigned int freq_out) | |
1b340bd7 MB |
344 | { |
345 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 346 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
347 | u32 ssacd = ssp_read_reg(ssp, SSACD) & ~0x70; |
348 | ||
349 | #if defined(CONFIG_PXA3xx) | |
350 | if (cpu_is_pxa3xx()) | |
351 | ssp_write_reg(ssp, SSACDD, 0); | |
352 | #endif | |
353 | ||
354 | switch (freq_out) { | |
355 | case 5622000: | |
356 | break; | |
357 | case 11345000: | |
358 | ssacd |= (0x1 << 4); | |
359 | break; | |
360 | case 12235000: | |
361 | ssacd |= (0x2 << 4); | |
362 | break; | |
363 | case 14857000: | |
364 | ssacd |= (0x3 << 4); | |
365 | break; | |
366 | case 32842000: | |
367 | ssacd |= (0x4 << 4); | |
368 | break; | |
369 | case 48000000: | |
370 | ssacd |= (0x5 << 4); | |
371 | break; | |
372 | case 0: | |
373 | /* Disable */ | |
374 | break; | |
375 | ||
376 | default: | |
377 | #ifdef CONFIG_PXA3xx | |
378 | /* PXA3xx has a clock ditherer which can be used to generate | |
379 | * a wider range of frequencies - calculate a value for it. | |
380 | */ | |
381 | if (cpu_is_pxa3xx()) { | |
382 | u32 val; | |
383 | u64 tmp = 19968; | |
384 | tmp *= 1000000; | |
385 | do_div(tmp, freq_out); | |
386 | val = tmp; | |
387 | ||
a419aef8 | 388 | val = (val << 16) | 64; |
1b340bd7 MB |
389 | ssp_write_reg(ssp, SSACDD, val); |
390 | ||
391 | ssacd |= (0x6 << 4); | |
392 | ||
393 | dev_dbg(&ssp->pdev->dev, | |
449bd54d | 394 | "Using SSACDD %x to supply %uHz\n", |
1b340bd7 MB |
395 | val, freq_out); |
396 | break; | |
397 | } | |
398 | #endif | |
399 | ||
400 | return -EINVAL; | |
401 | } | |
402 | ||
403 | ssp_write_reg(ssp, SSACD, ssacd); | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Set the active slots in TDM/Network mode | |
410 | */ | |
411 | static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, | |
a5479e38 | 412 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
1b340bd7 MB |
413 | { |
414 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 415 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
416 | u32 sscr0; |
417 | ||
a5479e38 DR |
418 | sscr0 = ssp_read_reg(ssp, SSCR0); |
419 | sscr0 &= ~(SSCR0_MOD | SSCR0_SlotsPerFrm(8) | SSCR0_EDSS | SSCR0_DSS); | |
1b340bd7 | 420 | |
a5479e38 DR |
421 | /* set slot width */ |
422 | if (slot_width > 16) | |
423 | sscr0 |= SSCR0_EDSS | SSCR0_DataSize(slot_width - 16); | |
424 | else | |
425 | sscr0 |= SSCR0_DataSize(slot_width); | |
426 | ||
427 | if (slots > 1) { | |
428 | /* enable network mode */ | |
429 | sscr0 |= SSCR0_MOD; | |
430 | ||
431 | /* set number of active slots */ | |
432 | sscr0 |= SSCR0_SlotsPerFrm(slots); | |
433 | ||
434 | /* set active slot mask */ | |
435 | ssp_write_reg(ssp, SSTSA, tx_mask); | |
436 | ssp_write_reg(ssp, SSRSA, rx_mask); | |
437 | } | |
1b340bd7 MB |
438 | ssp_write_reg(ssp, SSCR0, sscr0); |
439 | ||
1b340bd7 MB |
440 | return 0; |
441 | } | |
442 | ||
443 | /* | |
444 | * Tristate the SSP DAI lines | |
445 | */ | |
446 | static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai, | |
447 | int tristate) | |
448 | { | |
449 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 450 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
451 | u32 sscr1; |
452 | ||
453 | sscr1 = ssp_read_reg(ssp, SSCR1); | |
454 | if (tristate) | |
455 | sscr1 &= ~SSCR1_TTE; | |
456 | else | |
457 | sscr1 |= SSCR1_TTE; | |
458 | ssp_write_reg(ssp, SSCR1, sscr1); | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | /* | |
464 | * Set up the SSP DAI format. | |
465 | * The SSP Port must be inactive before calling this function as the | |
466 | * physical interface format is changed. | |
467 | */ | |
468 | static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai, | |
469 | unsigned int fmt) | |
470 | { | |
471 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 472 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
473 | u32 sscr0; |
474 | u32 sscr1; | |
475 | u32 sspsp; | |
476 | ||
cbf1146d DM |
477 | /* check if we need to change anything at all */ |
478 | if (priv->dai_fmt == fmt) | |
479 | return 0; | |
480 | ||
481 | /* we can only change the settings if the port is not in use */ | |
482 | if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) { | |
483 | dev_err(&ssp->pdev->dev, | |
484 | "can't change hardware dai format: stream is in use"); | |
485 | return -EINVAL; | |
486 | } | |
487 | ||
1b340bd7 MB |
488 | /* reset port settings */ |
489 | sscr0 = ssp_read_reg(ssp, SSCR0) & | |
20a41eac | 490 | (SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS); |
1b340bd7 MB |
491 | sscr1 = SSCR1_RxTresh(8) | SSCR1_TxTresh(7); |
492 | sspsp = 0; | |
493 | ||
494 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
495 | case SND_SOC_DAIFMT_CBM_CFM: | |
496 | sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR; | |
497 | break; | |
498 | case SND_SOC_DAIFMT_CBM_CFS: | |
499 | sscr1 |= SSCR1_SCLKDIR; | |
500 | break; | |
501 | case SND_SOC_DAIFMT_CBS_CFS: | |
502 | break; | |
503 | default: | |
504 | return -EINVAL; | |
505 | } | |
506 | ||
fa44c077 DR |
507 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
508 | case SND_SOC_DAIFMT_NB_NF: | |
509 | sspsp |= SSPSP_SFRMP; | |
510 | break; | |
511 | case SND_SOC_DAIFMT_NB_IF: | |
512 | break; | |
513 | case SND_SOC_DAIFMT_IB_IF: | |
514 | sspsp |= SSPSP_SCMODE(2); | |
515 | break; | |
516 | case SND_SOC_DAIFMT_IB_NF: | |
517 | sspsp |= SSPSP_SCMODE(2) | SSPSP_SFRMP; | |
518 | break; | |
519 | default: | |
520 | return -EINVAL; | |
521 | } | |
1b340bd7 MB |
522 | |
523 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
524 | case SND_SOC_DAIFMT_I2S: | |
72d74664 | 525 | sscr0 |= SSCR0_PSP; |
1b340bd7 | 526 | sscr1 |= SSCR1_RWOT | SSCR1_TRAIL; |
0ce36c5f | 527 | /* See hw_params() */ |
1b340bd7 MB |
528 | break; |
529 | ||
530 | case SND_SOC_DAIFMT_DSP_A: | |
531 | sspsp |= SSPSP_FSRT; | |
532 | case SND_SOC_DAIFMT_DSP_B: | |
533 | sscr0 |= SSCR0_MOD | SSCR0_PSP; | |
534 | sscr1 |= SSCR1_TRAIL | SSCR1_RWOT; | |
1b340bd7 MB |
535 | break; |
536 | ||
537 | default: | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | ssp_write_reg(ssp, SSCR0, sscr0); | |
542 | ssp_write_reg(ssp, SSCR1, sscr1); | |
543 | ssp_write_reg(ssp, SSPSP, sspsp); | |
544 | ||
545 | dump_registers(ssp); | |
546 | ||
547 | /* Since we are configuring the timings for the format by hand | |
548 | * we have to defer some things until hw_params() where we | |
549 | * know parameters like the sample size. | |
550 | */ | |
551 | priv->dai_fmt = fmt; | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | /* | |
557 | * Set the SSP audio DMA parameters and sample size. | |
558 | * Can be called multiple times by oss emulation. | |
559 | */ | |
560 | static int pxa_ssp_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
561 | struct snd_pcm_hw_params *params, |
562 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
563 | { |
564 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
565 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
566 | struct ssp_priv *priv = cpu_dai->private_data; | |
f9efc9df | 567 | struct ssp_device *ssp = priv->ssp; |
2d7e71fa | 568 | int chn = params_channels(params); |
1b340bd7 MB |
569 | u32 sscr0; |
570 | u32 sspsp; | |
571 | int width = snd_pcm_format_physical_width(params_format(params)); | |
92429069 | 572 | int ttsa = ssp_read_reg(ssp, SSTSA) & 0xf; |
1b340bd7 | 573 | |
2d7e71fa EM |
574 | /* generate correct DMA params */ |
575 | if (cpu_dai->dma_data) | |
576 | kfree(cpu_dai->dma_data); | |
577 | ||
92429069 PZ |
578 | /* Network mode with one active slot (ttsa == 1) can be used |
579 | * to force 16-bit frame width on the wire (for S16_LE), even | |
580 | * with two channels. Use 16-bit DMA transfers for this case. | |
581 | */ | |
2d7e71fa EM |
582 | cpu_dai->dma_data = ssp_get_dma_params(ssp, |
583 | ((chn == 2) && (ttsa != 1)) || (width == 32), | |
584 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK); | |
1b340bd7 MB |
585 | |
586 | /* we can only change the settings if the port is not in use */ | |
587 | if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) | |
588 | return 0; | |
589 | ||
590 | /* clear selected SSP bits */ | |
591 | sscr0 = ssp_read_reg(ssp, SSCR0) & ~(SSCR0_DSS | SSCR0_EDSS); | |
592 | ssp_write_reg(ssp, SSCR0, sscr0); | |
593 | ||
594 | /* bit size */ | |
595 | sscr0 = 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); | |
1b340bd7 MB |
603 | break; |
604 | case SNDRV_PCM_FORMAT_S24_LE: | |
605 | sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8)); | |
1b340bd7 MB |
606 | break; |
607 | case SNDRV_PCM_FORMAT_S32_LE: | |
608 | sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(16)); | |
1b340bd7 MB |
609 | break; |
610 | } | |
611 | ssp_write_reg(ssp, SSCR0, sscr0); | |
612 | ||
613 | switch (priv->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
614 | case SND_SOC_DAIFMT_I2S: | |
72d74664 DM |
615 | sspsp = ssp_read_reg(ssp, SSPSP); |
616 | ||
1a297286 | 617 | if ((ssp_get_scr(ssp) == 4) && (width == 16)) { |
72d74664 DM |
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 | |
0ce36c5f MB |
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 | } | |
72d74664 | 650 | |
1b340bd7 MB |
651 | ssp_write_reg(ssp, SSPSP, sspsp); |
652 | break; | |
653 | default: | |
654 | break; | |
655 | } | |
656 | ||
72d74664 | 657 | /* When we use a network mode, we always require TDM slots |
1b340bd7 MB |
658 | * - complain loudly and fail if they've not been set up yet. |
659 | */ | |
92429069 | 660 | if ((sscr0 & SSCR0_MOD) && !ttsa) { |
1b340bd7 MB |
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 | ||
dee89c4d MB |
670 | static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd, |
671 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
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; | |
f9efc9df | 677 | struct ssp_device *ssp = priv->ssp; |
1b340bd7 MB |
678 | int val; |
679 | ||
680 | switch (cmd) { | |
681 | case SNDRV_PCM_TRIGGER_RESUME: | |
f9efc9df | 682 | ssp_enable(ssp); |
1b340bd7 MB |
683 | break; |
684 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
685 | val = ssp_read_reg(ssp, SSCR1); | |
686 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
687 | val |= SSCR1_TSRE; | |
688 | else | |
689 | val |= SSCR1_RSRE; | |
690 | ssp_write_reg(ssp, SSCR1, val); | |
691 | val = ssp_read_reg(ssp, SSSR); | |
692 | ssp_write_reg(ssp, SSSR, val); | |
693 | break; | |
694 | case SNDRV_PCM_TRIGGER_START: | |
695 | val = ssp_read_reg(ssp, SSCR1); | |
696 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
697 | val |= SSCR1_TSRE; | |
698 | else | |
699 | val |= SSCR1_RSRE; | |
700 | ssp_write_reg(ssp, SSCR1, val); | |
f9efc9df | 701 | ssp_enable(ssp); |
1b340bd7 MB |
702 | break; |
703 | case SNDRV_PCM_TRIGGER_STOP: | |
704 | val = ssp_read_reg(ssp, SSCR1); | |
705 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
706 | val &= ~SSCR1_TSRE; | |
707 | else | |
708 | val &= ~SSCR1_RSRE; | |
709 | ssp_write_reg(ssp, SSCR1, val); | |
710 | break; | |
711 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
f9efc9df | 712 | ssp_disable(ssp); |
1b340bd7 MB |
713 | break; |
714 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
715 | val = ssp_read_reg(ssp, SSCR1); | |
716 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
717 | val &= ~SSCR1_TSRE; | |
718 | else | |
719 | val &= ~SSCR1_RSRE; | |
720 | 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 | ||
f9efc9df EM |
742 | priv->ssp = ssp_request(dai->id + 1, "SoC audio"); |
743 | if (priv->ssp == NULL) { | |
1b340bd7 MB |
744 | ret = -ENODEV; |
745 | goto err_priv; | |
746 | } | |
747 | ||
a5735b7e | 748 | priv->dai_fmt = (unsigned int) -1; |
1b340bd7 MB |
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; | |
f9efc9df | 762 | ssp_free(priv->ssp); |
1b340bd7 MB |
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 | ||
6335d055 EM |
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 | ||
1b340bd7 MB |
787 | struct snd_soc_dai pxa_ssp_dai[] = { |
788 | { | |
789 | .name = "pxa2xx-ssp1", | |
790 | .id = 0, | |
1b340bd7 MB |
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, | |
f34762b6 | 797 | .channels_max = 8, |
1b340bd7 MB |
798 | .rates = PXA_SSP_RATES, |
799 | .formats = PXA_SSP_FORMATS, | |
800 | }, | |
801 | .capture = { | |
802 | .channels_min = 1, | |
f34762b6 | 803 | .channels_max = 8, |
1b340bd7 MB |
804 | .rates = PXA_SSP_RATES, |
805 | .formats = PXA_SSP_FORMATS, | |
806 | }, | |
6335d055 | 807 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
808 | }, |
809 | { .name = "pxa2xx-ssp2", | |
810 | .id = 1, | |
1b340bd7 MB |
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, | |
f34762b6 | 817 | .channels_max = 8, |
1b340bd7 MB |
818 | .rates = PXA_SSP_RATES, |
819 | .formats = PXA_SSP_FORMATS, | |
820 | }, | |
821 | .capture = { | |
822 | .channels_min = 1, | |
f34762b6 | 823 | .channels_max = 8, |
1b340bd7 MB |
824 | .rates = PXA_SSP_RATES, |
825 | .formats = PXA_SSP_FORMATS, | |
826 | }, | |
6335d055 | 827 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
828 | }, |
829 | { | |
830 | .name = "pxa2xx-ssp3", | |
831 | .id = 2, | |
1b340bd7 MB |
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, | |
f34762b6 | 838 | .channels_max = 8, |
1b340bd7 MB |
839 | .rates = PXA_SSP_RATES, |
840 | .formats = PXA_SSP_FORMATS, | |
841 | }, | |
842 | .capture = { | |
843 | .channels_min = 1, | |
f34762b6 | 844 | .channels_max = 8, |
1b340bd7 MB |
845 | .rates = PXA_SSP_RATES, |
846 | .formats = PXA_SSP_FORMATS, | |
847 | }, | |
6335d055 | 848 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
849 | }, |
850 | { | |
851 | .name = "pxa2xx-ssp4", | |
852 | .id = 3, | |
1b340bd7 MB |
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, | |
f34762b6 | 859 | .channels_max = 8, |
1b340bd7 MB |
860 | .rates = PXA_SSP_RATES, |
861 | .formats = PXA_SSP_FORMATS, | |
862 | }, | |
863 | .capture = { | |
864 | .channels_min = 1, | |
f34762b6 | 865 | .channels_max = 8, |
1b340bd7 MB |
866 | .rates = PXA_SSP_RATES, |
867 | .formats = PXA_SSP_FORMATS, | |
868 | }, | |
6335d055 | 869 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
870 | }, |
871 | }; | |
872 | EXPORT_SYMBOL_GPL(pxa_ssp_dai); | |
873 | ||
c9b3a40f | 874 | static int __init pxa_ssp_init(void) |
3f4b783c MB |
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 | ||
1b340bd7 MB |
886 | /* Module information */ |
887 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
888 | MODULE_DESCRIPTION("PXA SSP/PCM SoC Interface"); | |
889 | MODULE_LICENSE("GPL"); |