Commit | Line | Data |
---|---|---|
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> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/clk.h> | |
21 | #include <linux/io.h> | |
22 | ||
0664678a PZ |
23 | #include <asm/irq.h> |
24 | ||
1b340bd7 MB |
25 | #include <sound/core.h> |
26 | #include <sound/pcm.h> | |
27 | #include <sound/initval.h> | |
28 | #include <sound/pcm_params.h> | |
29 | #include <sound/soc.h> | |
30 | #include <sound/pxa2xx-lib.h> | |
31 | ||
32 | #include <mach/hardware.h> | |
33 | #include <mach/pxa-regs.h> | |
34 | #include <mach/regs-ssp.h> | |
35 | #include <mach/audio.h> | |
36 | #include <mach/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_dev dev; | |
46 | unsigned int sysclk; | |
47 | int dai_fmt; | |
48 | #ifdef CONFIG_PM | |
49 | struct ssp_state state; | |
50 | #endif | |
51 | }; | |
52 | ||
53 | #define PXA2xx_SSP1_BASE 0x41000000 | |
54 | #define PXA27x_SSP2_BASE 0x41700000 | |
55 | #define PXA27x_SSP3_BASE 0x41900000 | |
56 | #define PXA3xx_SSP4_BASE 0x41a00000 | |
57 | ||
58 | static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_mono_out = { | |
59 | .name = "SSP1 PCM Mono out", | |
60 | .dev_addr = PXA2xx_SSP1_BASE + SSDR, | |
61 | .drcmr = &DRCMR(14), | |
62 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
63 | DCMD_BURST16 | DCMD_WIDTH2, | |
64 | }; | |
65 | ||
66 | static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_mono_in = { | |
67 | .name = "SSP1 PCM Mono in", | |
68 | .dev_addr = PXA2xx_SSP1_BASE + SSDR, | |
69 | .drcmr = &DRCMR(13), | |
70 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
71 | DCMD_BURST16 | DCMD_WIDTH2, | |
72 | }; | |
73 | ||
74 | static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_stereo_out = { | |
75 | .name = "SSP1 PCM Stereo out", | |
76 | .dev_addr = PXA2xx_SSP1_BASE + SSDR, | |
77 | .drcmr = &DRCMR(14), | |
78 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
79 | DCMD_BURST16 | DCMD_WIDTH4, | |
80 | }; | |
81 | ||
82 | static struct pxa2xx_pcm_dma_params pxa_ssp1_pcm_stereo_in = { | |
83 | .name = "SSP1 PCM Stereo in", | |
84 | .dev_addr = PXA2xx_SSP1_BASE + SSDR, | |
85 | .drcmr = &DRCMR(13), | |
86 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
87 | DCMD_BURST16 | DCMD_WIDTH4, | |
88 | }; | |
89 | ||
90 | static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_mono_out = { | |
91 | .name = "SSP2 PCM Mono out", | |
92 | .dev_addr = PXA27x_SSP2_BASE + SSDR, | |
93 | .drcmr = &DRCMR(16), | |
94 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
95 | DCMD_BURST16 | DCMD_WIDTH2, | |
96 | }; | |
97 | ||
98 | static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_mono_in = { | |
99 | .name = "SSP2 PCM Mono in", | |
100 | .dev_addr = PXA27x_SSP2_BASE + SSDR, | |
101 | .drcmr = &DRCMR(15), | |
102 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
103 | DCMD_BURST16 | DCMD_WIDTH2, | |
104 | }; | |
105 | ||
106 | static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_stereo_out = { | |
107 | .name = "SSP2 PCM Stereo out", | |
108 | .dev_addr = PXA27x_SSP2_BASE + SSDR, | |
109 | .drcmr = &DRCMR(16), | |
110 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
111 | DCMD_BURST16 | DCMD_WIDTH4, | |
112 | }; | |
113 | ||
114 | static struct pxa2xx_pcm_dma_params pxa_ssp2_pcm_stereo_in = { | |
115 | .name = "SSP2 PCM Stereo in", | |
116 | .dev_addr = PXA27x_SSP2_BASE + SSDR, | |
117 | .drcmr = &DRCMR(15), | |
118 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
119 | DCMD_BURST16 | DCMD_WIDTH4, | |
120 | }; | |
121 | ||
122 | static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_mono_out = { | |
123 | .name = "SSP3 PCM Mono out", | |
124 | .dev_addr = PXA27x_SSP3_BASE + SSDR, | |
125 | .drcmr = &DRCMR(67), | |
126 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
127 | DCMD_BURST16 | DCMD_WIDTH2, | |
128 | }; | |
129 | ||
130 | static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_mono_in = { | |
131 | .name = "SSP3 PCM Mono in", | |
132 | .dev_addr = PXA27x_SSP3_BASE + SSDR, | |
133 | .drcmr = &DRCMR(66), | |
134 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
135 | DCMD_BURST16 | DCMD_WIDTH2, | |
136 | }; | |
137 | ||
138 | static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_stereo_out = { | |
139 | .name = "SSP3 PCM Stereo out", | |
140 | .dev_addr = PXA27x_SSP3_BASE + SSDR, | |
141 | .drcmr = &DRCMR(67), | |
142 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
143 | DCMD_BURST16 | DCMD_WIDTH4, | |
144 | }; | |
145 | ||
146 | static struct pxa2xx_pcm_dma_params pxa_ssp3_pcm_stereo_in = { | |
147 | .name = "SSP3 PCM Stereo in", | |
148 | .dev_addr = PXA27x_SSP3_BASE + SSDR, | |
149 | .drcmr = &DRCMR(66), | |
150 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
151 | DCMD_BURST16 | DCMD_WIDTH4, | |
152 | }; | |
153 | ||
154 | static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_mono_out = { | |
155 | .name = "SSP4 PCM Mono out", | |
156 | .dev_addr = PXA3xx_SSP4_BASE + SSDR, | |
157 | .drcmr = &DRCMR(67), | |
158 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
159 | DCMD_BURST16 | DCMD_WIDTH2, | |
160 | }; | |
161 | ||
162 | static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_mono_in = { | |
163 | .name = "SSP4 PCM Mono in", | |
164 | .dev_addr = PXA3xx_SSP4_BASE + SSDR, | |
165 | .drcmr = &DRCMR(66), | |
166 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
167 | DCMD_BURST16 | DCMD_WIDTH2, | |
168 | }; | |
169 | ||
170 | static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_stereo_out = { | |
171 | .name = "SSP4 PCM Stereo out", | |
172 | .dev_addr = PXA3xx_SSP4_BASE + SSDR, | |
173 | .drcmr = &DRCMR(67), | |
174 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
175 | DCMD_BURST16 | DCMD_WIDTH4, | |
176 | }; | |
177 | ||
178 | static struct pxa2xx_pcm_dma_params pxa_ssp4_pcm_stereo_in = { | |
179 | .name = "SSP4 PCM Stereo in", | |
180 | .dev_addr = PXA3xx_SSP4_BASE + SSDR, | |
181 | .drcmr = &DRCMR(66), | |
182 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
183 | DCMD_BURST16 | DCMD_WIDTH4, | |
184 | }; | |
185 | ||
186 | static void dump_registers(struct ssp_device *ssp) | |
187 | { | |
188 | dev_dbg(&ssp->pdev->dev, "SSCR0 0x%08x SSCR1 0x%08x SSTO 0x%08x\n", | |
189 | ssp_read_reg(ssp, SSCR0), ssp_read_reg(ssp, SSCR1), | |
190 | ssp_read_reg(ssp, SSTO)); | |
191 | ||
192 | dev_dbg(&ssp->pdev->dev, "SSPSP 0x%08x SSSR 0x%08x SSACD 0x%08x\n", | |
193 | ssp_read_reg(ssp, SSPSP), ssp_read_reg(ssp, SSSR), | |
194 | ssp_read_reg(ssp, SSACD)); | |
195 | } | |
196 | ||
197 | static struct pxa2xx_pcm_dma_params *ssp_dma_params[4][4] = { | |
198 | { | |
199 | &pxa_ssp1_pcm_mono_out, &pxa_ssp1_pcm_mono_in, | |
200 | &pxa_ssp1_pcm_stereo_out, &pxa_ssp1_pcm_stereo_in, | |
201 | }, | |
202 | { | |
203 | &pxa_ssp2_pcm_mono_out, &pxa_ssp2_pcm_mono_in, | |
204 | &pxa_ssp2_pcm_stereo_out, &pxa_ssp2_pcm_stereo_in, | |
205 | }, | |
206 | { | |
207 | &pxa_ssp3_pcm_mono_out, &pxa_ssp3_pcm_mono_in, | |
208 | &pxa_ssp3_pcm_stereo_out, &pxa_ssp3_pcm_stereo_in, | |
209 | }, | |
210 | { | |
211 | &pxa_ssp4_pcm_mono_out, &pxa_ssp4_pcm_mono_in, | |
212 | &pxa_ssp4_pcm_stereo_out, &pxa_ssp4_pcm_stereo_in, | |
213 | }, | |
214 | }; | |
215 | ||
dee89c4d MB |
216 | static int pxa_ssp_startup(struct snd_pcm_substream *substream, |
217 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
218 | { |
219 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
220 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
221 | struct ssp_priv *priv = cpu_dai->private_data; | |
222 | int ret = 0; | |
223 | ||
224 | if (!cpu_dai->active) { | |
0664678a PZ |
225 | priv->dev.port = cpu_dai->id + 1; |
226 | priv->dev.irq = NO_IRQ; | |
227 | clk_enable(priv->dev.ssp->clk); | |
1b340bd7 MB |
228 | ssp_disable(&priv->dev); |
229 | } | |
230 | return ret; | |
231 | } | |
232 | ||
dee89c4d MB |
233 | static void pxa_ssp_shutdown(struct snd_pcm_substream *substream, |
234 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
235 | { |
236 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
237 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
238 | struct ssp_priv *priv = cpu_dai->private_data; | |
239 | ||
240 | if (!cpu_dai->active) { | |
241 | ssp_disable(&priv->dev); | |
0664678a | 242 | clk_disable(priv->dev.ssp->clk); |
1b340bd7 MB |
243 | } |
244 | } | |
245 | ||
246 | #ifdef CONFIG_PM | |
247 | ||
dc7d7b83 | 248 | static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai) |
1b340bd7 MB |
249 | { |
250 | struct ssp_priv *priv = cpu_dai->private_data; | |
251 | ||
252 | if (!cpu_dai->active) | |
253 | return 0; | |
254 | ||
255 | ssp_save_state(&priv->dev, &priv->state); | |
256 | clk_disable(priv->dev.ssp->clk); | |
257 | return 0; | |
258 | } | |
259 | ||
dc7d7b83 | 260 | static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai) |
1b340bd7 MB |
261 | { |
262 | struct ssp_priv *priv = cpu_dai->private_data; | |
263 | ||
264 | if (!cpu_dai->active) | |
265 | return 0; | |
266 | ||
267 | clk_enable(priv->dev.ssp->clk); | |
268 | ssp_restore_state(&priv->dev, &priv->state); | |
269 | ssp_enable(&priv->dev); | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | #else | |
275 | #define pxa_ssp_suspend NULL | |
276 | #define pxa_ssp_resume NULL | |
277 | #endif | |
278 | ||
279 | /** | |
280 | * ssp_set_clkdiv - set SSP clock divider | |
281 | * @div: serial clock rate divider | |
282 | */ | |
283 | static void ssp_set_scr(struct ssp_dev *dev, u32 div) | |
284 | { | |
285 | struct ssp_device *ssp = dev->ssp; | |
286 | u32 sscr0 = ssp_read_reg(dev->ssp, SSCR0) & ~SSCR0_SCR; | |
287 | ||
288 | ssp_write_reg(ssp, SSCR0, (sscr0 | SSCR0_SerClkDiv(div))); | |
289 | } | |
290 | ||
291 | /* | |
292 | * Set the SSP ports SYSCLK. | |
293 | */ | |
294 | static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai, | |
295 | int clk_id, unsigned int freq, int dir) | |
296 | { | |
297 | struct ssp_priv *priv = cpu_dai->private_data; | |
298 | struct ssp_device *ssp = priv->dev.ssp; | |
299 | int val; | |
300 | ||
301 | u32 sscr0 = ssp_read_reg(ssp, SSCR0) & | |
20a41eac | 302 | ~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS); |
1b340bd7 MB |
303 | |
304 | dev_dbg(&ssp->pdev->dev, | |
305 | "pxa_ssp_set_dai_sysclk id: %d, clk_id %d, freq %d\n", | |
306 | cpu_dai->id, clk_id, freq); | |
307 | ||
308 | switch (clk_id) { | |
309 | case PXA_SSP_CLK_NET_PLL: | |
310 | sscr0 |= SSCR0_MOD; | |
311 | break; | |
312 | case PXA_SSP_CLK_PLL: | |
313 | /* Internal PLL is fixed */ | |
314 | if (cpu_is_pxa25x()) | |
315 | priv->sysclk = 1843200; | |
316 | else | |
317 | priv->sysclk = 13000000; | |
318 | break; | |
319 | case PXA_SSP_CLK_EXT: | |
320 | priv->sysclk = freq; | |
321 | sscr0 |= SSCR0_ECS; | |
322 | break; | |
323 | case PXA_SSP_CLK_NET: | |
324 | priv->sysclk = freq; | |
325 | sscr0 |= SSCR0_NCS | SSCR0_MOD; | |
326 | break; | |
327 | case PXA_SSP_CLK_AUDIO: | |
328 | priv->sysclk = 0; | |
329 | ssp_set_scr(&priv->dev, 1); | |
20a41eac | 330 | sscr0 |= SSCR0_ACS; |
1b340bd7 MB |
331 | break; |
332 | default: | |
333 | return -ENODEV; | |
334 | } | |
335 | ||
336 | /* The SSP clock must be disabled when changing SSP clock mode | |
337 | * on PXA2xx. On PXA3xx it must be enabled when doing so. */ | |
338 | if (!cpu_is_pxa3xx()) | |
339 | clk_disable(priv->dev.ssp->clk); | |
340 | val = ssp_read_reg(ssp, SSCR0) | sscr0; | |
341 | ssp_write_reg(ssp, SSCR0, val); | |
342 | if (!cpu_is_pxa3xx()) | |
343 | clk_enable(priv->dev.ssp->clk); | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | /* | |
349 | * Set the SSP clock dividers. | |
350 | */ | |
351 | static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai, | |
352 | int div_id, int div) | |
353 | { | |
354 | struct ssp_priv *priv = cpu_dai->private_data; | |
355 | struct ssp_device *ssp = priv->dev.ssp; | |
356 | int val; | |
357 | ||
358 | switch (div_id) { | |
359 | case PXA_SSP_AUDIO_DIV_ACDS: | |
360 | val = (ssp_read_reg(ssp, SSACD) & ~0x7) | SSACD_ACDS(div); | |
361 | ssp_write_reg(ssp, SSACD, val); | |
362 | break; | |
363 | case PXA_SSP_AUDIO_DIV_SCDB: | |
364 | val = ssp_read_reg(ssp, SSACD); | |
365 | val &= ~SSACD_SCDB; | |
366 | #if defined(CONFIG_PXA3xx) | |
367 | if (cpu_is_pxa3xx()) | |
368 | val &= ~SSACD_SCDX8; | |
369 | #endif | |
370 | switch (div) { | |
371 | case PXA_SSP_CLK_SCDB_1: | |
372 | val |= SSACD_SCDB; | |
373 | break; | |
374 | case PXA_SSP_CLK_SCDB_4: | |
375 | break; | |
376 | #if defined(CONFIG_PXA3xx) | |
377 | case PXA_SSP_CLK_SCDB_8: | |
378 | if (cpu_is_pxa3xx()) | |
379 | val |= SSACD_SCDX8; | |
380 | else | |
381 | return -EINVAL; | |
382 | break; | |
383 | #endif | |
384 | default: | |
385 | return -EINVAL; | |
386 | } | |
387 | ssp_write_reg(ssp, SSACD, val); | |
388 | break; | |
389 | case PXA_SSP_DIV_SCR: | |
390 | ssp_set_scr(&priv->dev, div); | |
391 | break; | |
392 | default: | |
393 | return -ENODEV; | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | /* | |
400 | * Configure the PLL frequency pxa27x and (afaik - pxa320 only) | |
401 | */ | |
402 | static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai, | |
403 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
404 | { | |
405 | struct ssp_priv *priv = cpu_dai->private_data; | |
406 | struct ssp_device *ssp = priv->dev.ssp; | |
407 | u32 ssacd = ssp_read_reg(ssp, SSACD) & ~0x70; | |
408 | ||
409 | #if defined(CONFIG_PXA3xx) | |
410 | if (cpu_is_pxa3xx()) | |
411 | ssp_write_reg(ssp, SSACDD, 0); | |
412 | #endif | |
413 | ||
414 | switch (freq_out) { | |
415 | case 5622000: | |
416 | break; | |
417 | case 11345000: | |
418 | ssacd |= (0x1 << 4); | |
419 | break; | |
420 | case 12235000: | |
421 | ssacd |= (0x2 << 4); | |
422 | break; | |
423 | case 14857000: | |
424 | ssacd |= (0x3 << 4); | |
425 | break; | |
426 | case 32842000: | |
427 | ssacd |= (0x4 << 4); | |
428 | break; | |
429 | case 48000000: | |
430 | ssacd |= (0x5 << 4); | |
431 | break; | |
432 | case 0: | |
433 | /* Disable */ | |
434 | break; | |
435 | ||
436 | default: | |
437 | #ifdef CONFIG_PXA3xx | |
438 | /* PXA3xx has a clock ditherer which can be used to generate | |
439 | * a wider range of frequencies - calculate a value for it. | |
440 | */ | |
441 | if (cpu_is_pxa3xx()) { | |
442 | u32 val; | |
443 | u64 tmp = 19968; | |
444 | tmp *= 1000000; | |
445 | do_div(tmp, freq_out); | |
446 | val = tmp; | |
447 | ||
448 | val = (val << 16) | 64;; | |
449 | ssp_write_reg(ssp, SSACDD, val); | |
450 | ||
451 | ssacd |= (0x6 << 4); | |
452 | ||
453 | dev_dbg(&ssp->pdev->dev, | |
454 | "Using SSACDD %x to supply %dHz\n", | |
455 | val, freq_out); | |
456 | break; | |
457 | } | |
458 | #endif | |
459 | ||
460 | return -EINVAL; | |
461 | } | |
462 | ||
463 | ssp_write_reg(ssp, SSACD, ssacd); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | /* | |
469 | * Set the active slots in TDM/Network mode | |
470 | */ | |
471 | static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, | |
472 | unsigned int mask, int slots) | |
473 | { | |
474 | struct ssp_priv *priv = cpu_dai->private_data; | |
475 | struct ssp_device *ssp = priv->dev.ssp; | |
476 | u32 sscr0; | |
477 | ||
478 | sscr0 = ssp_read_reg(ssp, SSCR0) & ~SSCR0_SlotsPerFrm(7); | |
479 | ||
480 | /* set number of active slots */ | |
481 | sscr0 |= SSCR0_SlotsPerFrm(slots); | |
482 | ssp_write_reg(ssp, SSCR0, sscr0); | |
483 | ||
484 | /* set active slot mask */ | |
485 | ssp_write_reg(ssp, SSTSA, mask); | |
486 | ssp_write_reg(ssp, SSRSA, mask); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | /* | |
491 | * Tristate the SSP DAI lines | |
492 | */ | |
493 | static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai, | |
494 | int tristate) | |
495 | { | |
496 | struct ssp_priv *priv = cpu_dai->private_data; | |
497 | struct ssp_device *ssp = priv->dev.ssp; | |
498 | u32 sscr1; | |
499 | ||
500 | sscr1 = ssp_read_reg(ssp, SSCR1); | |
501 | if (tristate) | |
502 | sscr1 &= ~SSCR1_TTE; | |
503 | else | |
504 | sscr1 |= SSCR1_TTE; | |
505 | ssp_write_reg(ssp, SSCR1, sscr1); | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | /* | |
511 | * Set up the SSP DAI format. | |
512 | * The SSP Port must be inactive before calling this function as the | |
513 | * physical interface format is changed. | |
514 | */ | |
515 | static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai, | |
516 | unsigned int fmt) | |
517 | { | |
518 | struct ssp_priv *priv = cpu_dai->private_data; | |
519 | struct ssp_device *ssp = priv->dev.ssp; | |
520 | u32 sscr0; | |
521 | u32 sscr1; | |
522 | u32 sspsp; | |
523 | ||
cbf1146d DM |
524 | /* check if we need to change anything at all */ |
525 | if (priv->dai_fmt == fmt) | |
526 | return 0; | |
527 | ||
528 | /* we can only change the settings if the port is not in use */ | |
529 | if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) { | |
530 | dev_err(&ssp->pdev->dev, | |
531 | "can't change hardware dai format: stream is in use"); | |
532 | return -EINVAL; | |
533 | } | |
534 | ||
1b340bd7 MB |
535 | /* reset port settings */ |
536 | sscr0 = ssp_read_reg(ssp, SSCR0) & | |
20a41eac | 537 | (SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS); |
1b340bd7 MB |
538 | sscr1 = SSCR1_RxTresh(8) | SSCR1_TxTresh(7); |
539 | sspsp = 0; | |
540 | ||
541 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
542 | case SND_SOC_DAIFMT_CBM_CFM: | |
543 | sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR; | |
544 | break; | |
545 | case SND_SOC_DAIFMT_CBM_CFS: | |
546 | sscr1 |= SSCR1_SCLKDIR; | |
547 | break; | |
548 | case SND_SOC_DAIFMT_CBS_CFS: | |
549 | break; | |
550 | default: | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | ssp_write_reg(ssp, SSCR0, sscr0); | |
555 | ssp_write_reg(ssp, SSCR1, sscr1); | |
556 | ssp_write_reg(ssp, SSPSP, sspsp); | |
557 | ||
558 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
559 | case SND_SOC_DAIFMT_I2S: | |
72d74664 | 560 | sscr0 |= SSCR0_PSP; |
1b340bd7 MB |
561 | sscr1 |= SSCR1_RWOT | SSCR1_TRAIL; |
562 | ||
0ce36c5f | 563 | /* See hw_params() */ |
1b340bd7 MB |
564 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
565 | case SND_SOC_DAIFMT_NB_NF: | |
0ce36c5f | 566 | sspsp |= SSPSP_SFRMP; |
1b340bd7 MB |
567 | break; |
568 | case SND_SOC_DAIFMT_NB_IF: | |
1b340bd7 MB |
569 | break; |
570 | case SND_SOC_DAIFMT_IB_IF: | |
0ce36c5f | 571 | sspsp |= SSPSP_SCMODE(3); |
1b340bd7 MB |
572 | break; |
573 | default: | |
574 | return -EINVAL; | |
575 | } | |
576 | break; | |
577 | ||
578 | case SND_SOC_DAIFMT_DSP_A: | |
579 | sspsp |= SSPSP_FSRT; | |
580 | case SND_SOC_DAIFMT_DSP_B: | |
581 | sscr0 |= SSCR0_MOD | SSCR0_PSP; | |
582 | sscr1 |= SSCR1_TRAIL | SSCR1_RWOT; | |
583 | ||
584 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
585 | case SND_SOC_DAIFMT_NB_NF: | |
586 | sspsp |= SSPSP_SFRMP; | |
587 | break; | |
588 | case SND_SOC_DAIFMT_IB_IF: | |
589 | break; | |
590 | default: | |
591 | return -EINVAL; | |
592 | } | |
593 | break; | |
594 | ||
595 | default: | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | ssp_write_reg(ssp, SSCR0, sscr0); | |
600 | ssp_write_reg(ssp, SSCR1, sscr1); | |
601 | ssp_write_reg(ssp, SSPSP, sspsp); | |
602 | ||
603 | dump_registers(ssp); | |
604 | ||
605 | /* Since we are configuring the timings for the format by hand | |
606 | * we have to defer some things until hw_params() where we | |
607 | * know parameters like the sample size. | |
608 | */ | |
609 | priv->dai_fmt = fmt; | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
614 | /* | |
615 | * Set the SSP audio DMA parameters and sample size. | |
616 | * Can be called multiple times by oss emulation. | |
617 | */ | |
618 | static int pxa_ssp_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
619 | struct snd_pcm_hw_params *params, |
620 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
621 | { |
622 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
623 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
624 | struct ssp_priv *priv = cpu_dai->private_data; | |
625 | struct ssp_device *ssp = priv->dev.ssp; | |
626 | int dma = 0, chn = params_channels(params); | |
627 | u32 sscr0; | |
628 | u32 sspsp; | |
629 | int width = snd_pcm_format_physical_width(params_format(params)); | |
92429069 | 630 | int ttsa = ssp_read_reg(ssp, SSTSA) & 0xf; |
1b340bd7 MB |
631 | |
632 | /* select correct DMA params */ | |
633 | if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
634 | dma = 1; /* capture DMA offset is 1,3 */ | |
92429069 PZ |
635 | /* Network mode with one active slot (ttsa == 1) can be used |
636 | * to force 16-bit frame width on the wire (for S16_LE), even | |
637 | * with two channels. Use 16-bit DMA transfers for this case. | |
638 | */ | |
639 | if (((chn == 2) && (ttsa != 1)) || (width == 32)) | |
640 | dma += 2; /* 32-bit DMA offset is 2, 16-bit is 0 */ | |
641 | ||
1b340bd7 MB |
642 | cpu_dai->dma_data = ssp_dma_params[cpu_dai->id][dma]; |
643 | ||
644 | dev_dbg(&ssp->pdev->dev, "pxa_ssp_hw_params: dma %d\n", dma); | |
645 | ||
646 | /* we can only change the settings if the port is not in use */ | |
647 | if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) | |
648 | return 0; | |
649 | ||
650 | /* clear selected SSP bits */ | |
651 | sscr0 = ssp_read_reg(ssp, SSCR0) & ~(SSCR0_DSS | SSCR0_EDSS); | |
652 | ssp_write_reg(ssp, SSCR0, sscr0); | |
653 | ||
654 | /* bit size */ | |
655 | sscr0 = ssp_read_reg(ssp, SSCR0); | |
656 | switch (params_format(params)) { | |
657 | case SNDRV_PCM_FORMAT_S16_LE: | |
658 | #ifdef CONFIG_PXA3xx | |
659 | if (cpu_is_pxa3xx()) | |
660 | sscr0 |= SSCR0_FPCKE; | |
661 | #endif | |
662 | sscr0 |= SSCR0_DataSize(16); | |
1b340bd7 MB |
663 | break; |
664 | case SNDRV_PCM_FORMAT_S24_LE: | |
665 | sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8)); | |
1b340bd7 MB |
666 | break; |
667 | case SNDRV_PCM_FORMAT_S32_LE: | |
668 | sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(16)); | |
1b340bd7 MB |
669 | break; |
670 | } | |
671 | ssp_write_reg(ssp, SSCR0, sscr0); | |
672 | ||
673 | switch (priv->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
674 | case SND_SOC_DAIFMT_I2S: | |
72d74664 DM |
675 | sspsp = ssp_read_reg(ssp, SSPSP); |
676 | ||
677 | if (((sscr0 & SSCR0_SCR) == SSCR0_SerClkDiv(4)) && | |
678 | (width == 16)) { | |
679 | /* This is a special case where the bitclk is 64fs | |
680 | * and we're not dealing with 2*32 bits of audio | |
681 | * samples. | |
682 | * | |
683 | * The SSP values used for that are all found out by | |
684 | * trying and failing a lot; some of the registers | |
685 | * needed for that mode are only available on PXA3xx. | |
686 | */ | |
687 | ||
688 | #ifdef CONFIG_PXA3xx | |
689 | if (!cpu_is_pxa3xx()) | |
690 | return -EINVAL; | |
691 | ||
692 | sspsp |= SSPSP_SFRMWDTH(width * 2); | |
693 | sspsp |= SSPSP_SFRMDLY(width * 4); | |
694 | sspsp |= SSPSP_EDMYSTOP(3); | |
695 | sspsp |= SSPSP_DMYSTOP(3); | |
696 | sspsp |= SSPSP_DMYSTRT(1); | |
697 | #else | |
698 | return -EINVAL; | |
699 | #endif | |
0ce36c5f MB |
700 | } else { |
701 | /* The frame width is the width the LRCLK is | |
702 | * asserted for; the delay is expressed in | |
703 | * half cycle units. We need the extra cycle | |
704 | * because the data starts clocking out one BCLK | |
705 | * after LRCLK changes polarity. | |
706 | */ | |
707 | sspsp |= SSPSP_SFRMWDTH(width + 1); | |
708 | sspsp |= SSPSP_SFRMDLY((width + 1) * 2); | |
709 | sspsp |= SSPSP_DMYSTRT(1); | |
710 | } | |
72d74664 | 711 | |
1b340bd7 MB |
712 | ssp_write_reg(ssp, SSPSP, sspsp); |
713 | break; | |
714 | default: | |
715 | break; | |
716 | } | |
717 | ||
72d74664 | 718 | /* When we use a network mode, we always require TDM slots |
1b340bd7 MB |
719 | * - complain loudly and fail if they've not been set up yet. |
720 | */ | |
92429069 | 721 | if ((sscr0 & SSCR0_MOD) && !ttsa) { |
1b340bd7 MB |
722 | dev_err(&ssp->pdev->dev, "No TDM timeslot configured\n"); |
723 | return -EINVAL; | |
724 | } | |
725 | ||
726 | dump_registers(ssp); | |
727 | ||
728 | return 0; | |
729 | } | |
730 | ||
dee89c4d MB |
731 | static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd, |
732 | struct snd_soc_dai *dai) | |
1b340bd7 MB |
733 | { |
734 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
735 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
736 | int ret = 0; | |
737 | struct ssp_priv *priv = cpu_dai->private_data; | |
738 | struct ssp_device *ssp = priv->dev.ssp; | |
739 | int val; | |
740 | ||
741 | switch (cmd) { | |
742 | case SNDRV_PCM_TRIGGER_RESUME: | |
743 | ssp_enable(&priv->dev); | |
744 | break; | |
745 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
746 | val = ssp_read_reg(ssp, SSCR1); | |
747 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
748 | val |= SSCR1_TSRE; | |
749 | else | |
750 | val |= SSCR1_RSRE; | |
751 | ssp_write_reg(ssp, SSCR1, val); | |
752 | val = ssp_read_reg(ssp, SSSR); | |
753 | ssp_write_reg(ssp, SSSR, val); | |
754 | break; | |
755 | case SNDRV_PCM_TRIGGER_START: | |
756 | val = ssp_read_reg(ssp, SSCR1); | |
757 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
758 | val |= SSCR1_TSRE; | |
759 | else | |
760 | val |= SSCR1_RSRE; | |
761 | ssp_write_reg(ssp, SSCR1, val); | |
762 | ssp_enable(&priv->dev); | |
763 | break; | |
764 | case SNDRV_PCM_TRIGGER_STOP: | |
765 | val = ssp_read_reg(ssp, SSCR1); | |
766 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
767 | val &= ~SSCR1_TSRE; | |
768 | else | |
769 | val &= ~SSCR1_RSRE; | |
770 | ssp_write_reg(ssp, SSCR1, val); | |
771 | break; | |
772 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
773 | ssp_disable(&priv->dev); | |
774 | break; | |
775 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
776 | val = ssp_read_reg(ssp, SSCR1); | |
777 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
778 | val &= ~SSCR1_TSRE; | |
779 | else | |
780 | val &= ~SSCR1_RSRE; | |
781 | ssp_write_reg(ssp, SSCR1, val); | |
782 | break; | |
783 | ||
784 | default: | |
785 | ret = -EINVAL; | |
786 | } | |
787 | ||
788 | dump_registers(ssp); | |
789 | ||
790 | return ret; | |
791 | } | |
792 | ||
793 | static int pxa_ssp_probe(struct platform_device *pdev, | |
794 | struct snd_soc_dai *dai) | |
795 | { | |
796 | struct ssp_priv *priv; | |
797 | int ret; | |
798 | ||
799 | priv = kzalloc(sizeof(struct ssp_priv), GFP_KERNEL); | |
800 | if (!priv) | |
801 | return -ENOMEM; | |
802 | ||
0664678a | 803 | priv->dev.ssp = ssp_request(dai->id + 1, "SoC audio"); |
1b340bd7 MB |
804 | if (priv->dev.ssp == NULL) { |
805 | ret = -ENODEV; | |
806 | goto err_priv; | |
807 | } | |
808 | ||
a5735b7e | 809 | priv->dai_fmt = (unsigned int) -1; |
1b340bd7 MB |
810 | dai->private_data = priv; |
811 | ||
812 | return 0; | |
813 | ||
814 | err_priv: | |
815 | kfree(priv); | |
816 | return ret; | |
817 | } | |
818 | ||
819 | static void pxa_ssp_remove(struct platform_device *pdev, | |
820 | struct snd_soc_dai *dai) | |
821 | { | |
822 | struct ssp_priv *priv = dai->private_data; | |
823 | ssp_free(priv->dev.ssp); | |
824 | } | |
825 | ||
826 | #define PXA_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
827 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ | |
828 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \ | |
829 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) | |
830 | ||
831 | #define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ | |
832 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
833 | SNDRV_PCM_FMTBIT_S32_LE) | |
834 | ||
6335d055 EM |
835 | static struct snd_soc_dai_ops pxa_ssp_dai_ops = { |
836 | .startup = pxa_ssp_startup, | |
837 | .shutdown = pxa_ssp_shutdown, | |
838 | .trigger = pxa_ssp_trigger, | |
839 | .hw_params = pxa_ssp_hw_params, | |
840 | .set_sysclk = pxa_ssp_set_dai_sysclk, | |
841 | .set_clkdiv = pxa_ssp_set_dai_clkdiv, | |
842 | .set_pll = pxa_ssp_set_dai_pll, | |
843 | .set_fmt = pxa_ssp_set_dai_fmt, | |
844 | .set_tdm_slot = pxa_ssp_set_dai_tdm_slot, | |
845 | .set_tristate = pxa_ssp_set_dai_tristate, | |
846 | }; | |
847 | ||
1b340bd7 MB |
848 | struct snd_soc_dai pxa_ssp_dai[] = { |
849 | { | |
850 | .name = "pxa2xx-ssp1", | |
851 | .id = 0, | |
1b340bd7 MB |
852 | .probe = pxa_ssp_probe, |
853 | .remove = pxa_ssp_remove, | |
854 | .suspend = pxa_ssp_suspend, | |
855 | .resume = pxa_ssp_resume, | |
856 | .playback = { | |
857 | .channels_min = 1, | |
858 | .channels_max = 2, | |
859 | .rates = PXA_SSP_RATES, | |
860 | .formats = PXA_SSP_FORMATS, | |
861 | }, | |
862 | .capture = { | |
863 | .channels_min = 1, | |
864 | .channels_max = 2, | |
865 | .rates = PXA_SSP_RATES, | |
866 | .formats = PXA_SSP_FORMATS, | |
867 | }, | |
6335d055 | 868 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
869 | }, |
870 | { .name = "pxa2xx-ssp2", | |
871 | .id = 1, | |
1b340bd7 MB |
872 | .probe = pxa_ssp_probe, |
873 | .remove = pxa_ssp_remove, | |
874 | .suspend = pxa_ssp_suspend, | |
875 | .resume = pxa_ssp_resume, | |
876 | .playback = { | |
877 | .channels_min = 1, | |
878 | .channels_max = 2, | |
879 | .rates = PXA_SSP_RATES, | |
880 | .formats = PXA_SSP_FORMATS, | |
881 | }, | |
882 | .capture = { | |
883 | .channels_min = 1, | |
884 | .channels_max = 2, | |
885 | .rates = PXA_SSP_RATES, | |
886 | .formats = PXA_SSP_FORMATS, | |
887 | }, | |
6335d055 | 888 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
889 | }, |
890 | { | |
891 | .name = "pxa2xx-ssp3", | |
892 | .id = 2, | |
1b340bd7 MB |
893 | .probe = pxa_ssp_probe, |
894 | .remove = pxa_ssp_remove, | |
895 | .suspend = pxa_ssp_suspend, | |
896 | .resume = pxa_ssp_resume, | |
897 | .playback = { | |
898 | .channels_min = 1, | |
899 | .channels_max = 2, | |
900 | .rates = PXA_SSP_RATES, | |
901 | .formats = PXA_SSP_FORMATS, | |
902 | }, | |
903 | .capture = { | |
904 | .channels_min = 1, | |
905 | .channels_max = 2, | |
906 | .rates = PXA_SSP_RATES, | |
907 | .formats = PXA_SSP_FORMATS, | |
908 | }, | |
6335d055 | 909 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
910 | }, |
911 | { | |
912 | .name = "pxa2xx-ssp4", | |
913 | .id = 3, | |
1b340bd7 MB |
914 | .probe = pxa_ssp_probe, |
915 | .remove = pxa_ssp_remove, | |
916 | .suspend = pxa_ssp_suspend, | |
917 | .resume = pxa_ssp_resume, | |
918 | .playback = { | |
919 | .channels_min = 1, | |
920 | .channels_max = 2, | |
921 | .rates = PXA_SSP_RATES, | |
922 | .formats = PXA_SSP_FORMATS, | |
923 | }, | |
924 | .capture = { | |
925 | .channels_min = 1, | |
926 | .channels_max = 2, | |
927 | .rates = PXA_SSP_RATES, | |
928 | .formats = PXA_SSP_FORMATS, | |
929 | }, | |
6335d055 | 930 | .ops = &pxa_ssp_dai_ops, |
1b340bd7 MB |
931 | }, |
932 | }; | |
933 | EXPORT_SYMBOL_GPL(pxa_ssp_dai); | |
934 | ||
c9b3a40f | 935 | static int __init pxa_ssp_init(void) |
3f4b783c MB |
936 | { |
937 | return snd_soc_register_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai)); | |
938 | } | |
939 | module_init(pxa_ssp_init); | |
940 | ||
941 | static void __exit pxa_ssp_exit(void) | |
942 | { | |
943 | snd_soc_unregister_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai)); | |
944 | } | |
945 | module_exit(pxa_ssp_exit); | |
946 | ||
1b340bd7 MB |
947 | /* Module information */ |
948 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
949 | MODULE_DESCRIPTION("PXA SSP/PCM SoC Interface"); | |
950 | MODULE_LICENSE("GPL"); |