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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-11-23 06:18:32 -0500
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-11-23 06:18:32 -0500
commit554671230b9d2f79026897226546f399de4d4a50 (patch)
tree0494e8fc94df27049cf4d54f9f4b965eba3fd0e4 /sound/soc/atmel
parent45c26091205eb6ad737329c5973f46fd7c122595 (diff)
parent4ca8af579c9748376db537575f7a811c179fe50a (diff)
Merge branch 'for-3.2' into for-3.3
Diffstat (limited to 'sound/soc/atmel')
-rw-r--r--sound/soc/atmel/Kconfig21
-rw-r--r--sound/soc/atmel/Makefile4
-rw-r--r--sound/soc/atmel/playpaq_wm8510.c473
3 files changed, 1 insertions, 497 deletions
diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig
index bee3c94f58b0..d1fcc816ce97 100644
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -1,6 +1,6 @@
1config SND_ATMEL_SOC 1config SND_ATMEL_SOC
2 tristate "SoC Audio for the Atmel System-on-Chip" 2 tristate "SoC Audio for the Atmel System-on-Chip"
3 depends on ARCH_AT91 || AVR32 3 depends on ARCH_AT91
4 help 4 help
5 Say Y or M if you want to add support for codecs attached to 5 Say Y or M if you want to add support for codecs attached to
6 the ATMEL SSC interface. You will also need 6 the ATMEL SSC interface. You will also need
@@ -24,25 +24,6 @@ config SND_AT91_SOC_SAM9G20_WM8731
24 Say Y if you want to add support for SoC audio on WM8731-based 24 Say Y if you want to add support for SoC audio on WM8731-based
25 AT91sam9g20 evaluation board. 25 AT91sam9g20 evaluation board.
26 26
27config SND_AT32_SOC_PLAYPAQ
28 tristate "SoC Audio support for PlayPaq with WM8510"
29 depends on SND_ATMEL_SOC && BOARD_PLAYPAQ && AT91_PROGRAMMABLE_CLOCKS
30 select SND_ATMEL_SOC_SSC
31 select SND_SOC_WM8510
32 help
33 Say Y or M here if you want to add support for SoC audio
34 on the LRS PlayPaq.
35
36config SND_AT32_SOC_PLAYPAQ_SLAVE
37 bool "Run CODEC on PlayPaq in slave mode"
38 depends on SND_AT32_SOC_PLAYPAQ
39 default n
40 help
41 Say Y if you want to run with the AT32 SSC generating the BCLK
42 and FRAME signals on the PlayPaq. Unless you want to play
43 with the AT32 as the SSC master, you probably want to say N here,
44 as this will give you better sound quality.
45
46config SND_AT91_SOC_AFEB9260 27config SND_AT91_SOC_AFEB9260
47 tristate "SoC Audio support for AFEB9260 board" 28 tristate "SoC Audio support for AFEB9260 board"
48 depends on ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC 29 depends on ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC
diff --git a/sound/soc/atmel/Makefile b/sound/soc/atmel/Makefile
index e7ea56bd5f82..a5c0bf19da78 100644
--- a/sound/soc/atmel/Makefile
+++ b/sound/soc/atmel/Makefile
@@ -8,9 +8,5 @@ obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o
8# AT91 Machine Support 8# AT91 Machine Support
9snd-soc-sam9g20-wm8731-objs := sam9g20_wm8731.o 9snd-soc-sam9g20-wm8731-objs := sam9g20_wm8731.o
10 10
11# AT32 Machine Support
12snd-soc-playpaq-objs := playpaq_wm8510.o
13
14obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o 11obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o
15obj-$(CONFIG_SND_AT32_SOC_PLAYPAQ) += snd-soc-playpaq.o
16obj-$(CONFIG_SND_AT91_SOC_AFEB9260) += snd-soc-afeb9260.o 12obj-$(CONFIG_SND_AT91_SOC_AFEB9260) += snd-soc-afeb9260.o
diff --git a/sound/soc/atmel/playpaq_wm8510.c b/sound/soc/atmel/playpaq_wm8510.c
deleted file mode 100644
index 73ae99ad4578..000000000000
--- a/sound/soc/atmel/playpaq_wm8510.c
+++ /dev/null
@@ -1,473 +0,0 @@
1/* sound/soc/at32/playpaq_wm8510.c
2 * ASoC machine driver for PlayPaq using WM8510 codec
3 *
4 * Copyright (C) 2008 Long Range Systems
5 * Geoffrey Wossum <gwossum@acm.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This code is largely inspired by sound/soc/at91/eti_b1_wm8731.c
12 *
13 * NOTE: If you don't have the AT32 enhanced portmux configured (which
14 * isn't currently in the mainline or Atmel patched kernel), you will
15 * need to set the MCLK pin (PA30) to peripheral A in your board initialization
16 * code. Something like:
17 * at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
18 *
19 */
20
21/* #define DEBUG */
22
23#include <linux/module.h>
24#include <linux/moduleparam.h>
25#include <linux/kernel.h>
26#include <linux/errno.h>
27#include <linux/clk.h>
28#include <linux/timer.h>
29#include <linux/interrupt.h>
30#include <linux/platform_device.h>
31
32#include <sound/core.h>
33#include <sound/pcm.h>
34#include <sound/pcm_params.h>
35#include <sound/soc.h>
36
37#include <mach/at32ap700x.h>
38#include <mach/portmux.h>
39
40#include "../codecs/wm8510.h"
41#include "atmel-pcm.h"
42#include "atmel_ssc_dai.h"
43
44
45/*-------------------------------------------------------------------------*\
46 * constants
47\*-------------------------------------------------------------------------*/
48#define MCLK_PIN GPIO_PIN_PA(30)
49#define MCLK_PERIPH GPIO_PERIPH_A
50
51
52/*-------------------------------------------------------------------------*\
53 * data types
54\*-------------------------------------------------------------------------*/
55/* SSC clocking data */
56struct ssc_clock_data {
57 /* CMR div */
58 unsigned int cmr_div;
59
60 /* Frame period (as needed by xCMR.PERIOD) */
61 unsigned int period;
62
63 /* The SSC clock rate these settings where calculated for */
64 unsigned long ssc_rate;
65};
66
67
68/*-------------------------------------------------------------------------*\
69 * module data
70\*-------------------------------------------------------------------------*/
71static struct clk *_gclk0;
72static struct clk *_pll0;
73
74#define CODEC_CLK (_gclk0)
75
76
77/*-------------------------------------------------------------------------*\
78 * Sound SOC operations
79\*-------------------------------------------------------------------------*/
80#if defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE
81static struct ssc_clock_data playpaq_wm8510_calc_ssc_clock(
82 struct snd_pcm_hw_params *params,
83 struct snd_soc_dai *cpu_dai)
84{
85 struct at32_ssc_info *ssc_p = snd_soc_dai_get_drvdata(cpu_dai);
86 struct ssc_device *ssc = ssc_p->ssc;
87 struct ssc_clock_data cd;
88 unsigned int rate, width_bits, channels;
89 unsigned int bitrate, ssc_div;
90 unsigned actual_rate;
91
92
93 /*
94 * Figure out required bitrate
95 */
96 rate = params_rate(params);
97 channels = params_channels(params);
98 width_bits = snd_pcm_format_physical_width(params_format(params));
99 bitrate = rate * width_bits * channels;
100
101
102 /*
103 * Figure out required SSC divider and period for required bitrate
104 */
105 cd.ssc_rate = clk_get_rate(ssc->clk);
106 ssc_div = cd.ssc_rate / bitrate;
107 cd.cmr_div = ssc_div / 2;
108 if (ssc_div & 1) {
109 /* round cmr_div up */
110 cd.cmr_div++;
111 }
112 cd.period = width_bits - 1;
113
114
115 /*
116 * Find actual rate, compare to requested rate
117 */
118 actual_rate = (cd.ssc_rate / (cd.cmr_div * 2)) / (2 * (cd.period + 1));
119 pr_debug("playpaq_wm8510: Request rate = %u, actual rate = %u\n",
120 rate, actual_rate);
121
122
123 return cd;
124}
125#endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */
126
127
128
129static int playpaq_wm8510_hw_params(struct snd_pcm_substream *substream,
130 struct snd_pcm_hw_params *params)
131{
132 struct snd_soc_pcm_runtime *rtd = substream->private_data;
133 struct snd_soc_dai *codec_dai = rtd->codec_dai;
134 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
135 struct at32_ssc_info *ssc_p = snd_soc_dai_get_drvdata(cpu_dai);
136 struct ssc_device *ssc = ssc_p->ssc;
137 unsigned int pll_out = 0, bclk = 0, mclk_div = 0;
138 int ret;
139
140
141 /* Due to difficulties with getting the correct clocks from the AT32's
142 * PLL0, we're going to let the CODEC be in charge of all the clocks
143 */
144#if !defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE
145 const unsigned int fmt = (SND_SOC_DAIFMT_I2S |
146 SND_SOC_DAIFMT_NB_NF |
147 SND_SOC_DAIFMT_CBM_CFM);
148#else
149 struct ssc_clock_data cd;
150 const unsigned int fmt = (SND_SOC_DAIFMT_I2S |
151 SND_SOC_DAIFMT_NB_NF |
152 SND_SOC_DAIFMT_CBS_CFS);
153#endif
154
155 if (ssc == NULL) {
156 pr_warning("playpaq_wm8510_hw_params: ssc is NULL!\n");
157 return -EINVAL;
158 }
159
160
161 /*
162 * Figure out PLL and BCLK dividers for WM8510
163 */
164 switch (params_rate(params)) {
165 case 48000:
166 pll_out = 24576000;
167 mclk_div = WM8510_MCLKDIV_2;
168 bclk = WM8510_BCLKDIV_8;
169 break;
170
171 case 44100:
172 pll_out = 22579200;
173 mclk_div = WM8510_MCLKDIV_2;
174 bclk = WM8510_BCLKDIV_8;
175 break;
176
177 case 22050:
178 pll_out = 22579200;
179 mclk_div = WM8510_MCLKDIV_4;
180 bclk = WM8510_BCLKDIV_8;
181 break;
182
183 case 16000:
184 pll_out = 24576000;
185 mclk_div = WM8510_MCLKDIV_6;
186 bclk = WM8510_BCLKDIV_8;
187 break;
188
189 case 11025:
190 pll_out = 22579200;
191 mclk_div = WM8510_MCLKDIV_8;
192 bclk = WM8510_BCLKDIV_8;
193 break;
194
195 case 8000:
196 pll_out = 24576000;
197 mclk_div = WM8510_MCLKDIV_12;
198 bclk = WM8510_BCLKDIV_8;
199 break;
200
201 default:
202 pr_warning("playpaq_wm8510: Unsupported sample rate %d\n",
203 params_rate(params));
204 return -EINVAL;
205 }
206
207
208 /*
209 * set CPU and CODEC DAI configuration
210 */
211 ret = snd_soc_dai_set_fmt(codec_dai, fmt);
212 if (ret < 0) {
213 pr_warning("playpaq_wm8510: "
214 "Failed to set CODEC DAI format (%d)\n",
215 ret);
216 return ret;
217 }
218 ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
219 if (ret < 0) {
220 pr_warning("playpaq_wm8510: "
221 "Failed to set CPU DAI format (%d)\n",
222 ret);
223 return ret;
224 }
225
226
227 /*
228 * Set CPU clock configuration
229 */
230#if defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE
231 cd = playpaq_wm8510_calc_ssc_clock(params, cpu_dai);
232 pr_debug("playpaq_wm8510: cmr_div = %d, period = %d\n",
233 cd.cmr_div, cd.period);
234 ret = snd_soc_dai_set_clkdiv(cpu_dai, AT32_SSC_CMR_DIV, cd.cmr_div);
235 if (ret < 0) {
236 pr_warning("playpaq_wm8510: Failed to set CPU CMR_DIV (%d)\n",
237 ret);
238 return ret;
239 }
240 ret = snd_soc_dai_set_clkdiv(cpu_dai, AT32_SSC_TCMR_PERIOD,
241 cd.period);
242 if (ret < 0) {
243 pr_warning("playpaq_wm8510: "
244 "Failed to set CPU transmit period (%d)\n",
245 ret);
246 return ret;
247 }
248#endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */
249
250
251 /*
252 * Set CODEC clock configuration
253 */
254 pr_debug("playpaq_wm8510: "
255 "pll_in = %ld, pll_out = %u, bclk = %x, mclk = %x\n",
256 clk_get_rate(CODEC_CLK), pll_out, bclk, mclk_div);
257
258
259#if !defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE
260 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8510_BCLKDIV, bclk);
261 if (ret < 0) {
262 pr_warning
263 ("playpaq_wm8510: Failed to set CODEC DAI BCLKDIV (%d)\n",
264 ret);
265 return ret;
266 }
267#endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */
268
269
270 ret = snd_soc_dai_set_pll(codec_dai, 0, 0,
271 clk_get_rate(CODEC_CLK), pll_out);
272 if (ret < 0) {
273 pr_warning("playpaq_wm8510: Failed to set CODEC DAI PLL (%d)\n",
274 ret);
275 return ret;
276 }
277
278
279 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8510_MCLKDIV, mclk_div);
280 if (ret < 0) {
281 pr_warning("playpaq_wm8510: Failed to set CODEC MCLKDIV (%d)\n",
282 ret);
283 return ret;
284 }
285
286
287 return 0;
288}
289
290
291
292static struct snd_soc_ops playpaq_wm8510_ops = {
293 .hw_params = playpaq_wm8510_hw_params,
294};
295
296
297
298static const struct snd_soc_dapm_widget playpaq_dapm_widgets[] = {
299 SND_SOC_DAPM_MIC("Int Mic", NULL),
300 SND_SOC_DAPM_SPK("Ext Spk", NULL),
301};
302
303
304
305static const struct snd_soc_dapm_route intercon[] = {
306 /* speaker connected to SPKOUT */
307 {"Ext Spk", NULL, "SPKOUTP"},
308 {"Ext Spk", NULL, "SPKOUTN"},
309
310 {"Mic Bias", NULL, "Int Mic"},
311 {"MICN", NULL, "Mic Bias"},
312 {"MICP", NULL, "Mic Bias"},
313};
314
315
316
317static int playpaq_wm8510_init(struct snd_soc_pcm_runtime *rtd)
318{
319 struct snd_soc_codec *codec = rtd->codec;
320 struct snd_soc_dapm_context *dapm = &codec->dapm;
321 int i;
322
323 /*
324 * Add DAPM widgets
325 */
326 for (i = 0; i < ARRAY_SIZE(playpaq_dapm_widgets); i++)
327 snd_soc_dapm_new_control(dapm, &playpaq_dapm_widgets[i]);
328
329
330
331 /*
332 * Setup audio path interconnects
333 */
334 snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
335
336
337
338 /* always connected pins */
339 snd_soc_dapm_enable_pin(dapm, "Int Mic");
340 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
341
342
343
344 /* Make CSB show PLL rate */
345 snd_soc_dai_set_clkdiv(rtd->codec_dai, WM8510_OPCLKDIV,
346 WM8510_OPCLKDIV_1 | 4);
347
348 return 0;
349}
350
351
352
353static struct snd_soc_dai_link playpaq_wm8510_dai = {
354 .name = "WM8510",
355 .stream_name = "WM8510 PCM",
356 .cpu_dai_name= "atmel-ssc-dai.0",
357 .platform_name = "atmel-pcm-audio",
358 .codec_name = "wm8510-codec.0-0x1a",
359 .codec_dai_name = "wm8510-hifi",
360 .init = playpaq_wm8510_init,
361 .ops = &playpaq_wm8510_ops,
362};
363
364
365
366static struct snd_soc_card snd_soc_playpaq = {
367 .name = "LRS_PlayPaq_WM8510",
368 .dai_link = &playpaq_wm8510_dai,
369 .num_links = 1,
370};
371
372static struct platform_device *playpaq_snd_device;
373
374
375static int __init playpaq_asoc_init(void)
376{
377 int ret = 0;
378
379 /*
380 * Configure MCLK for WM8510
381 */
382 _gclk0 = clk_get(NULL, "gclk0");
383 if (IS_ERR(_gclk0)) {
384 _gclk0 = NULL;
385 ret = PTR_ERR(_gclk0);
386 goto err_gclk0;
387 }
388 _pll0 = clk_get(NULL, "pll0");
389 if (IS_ERR(_pll0)) {
390 _pll0 = NULL;
391 ret = PTR_ERR(_pll0);
392 goto err_pll0;
393 }
394 ret = clk_set_parent(_gclk0, _pll0);
395 if (ret) {
396 pr_warning("snd-soc-playpaq: "
397 "Failed to set PLL0 as parent for DAC clock\n");
398 goto err_set_clk;
399 }
400 clk_set_rate(CODEC_CLK, 12000000);
401 clk_enable(CODEC_CLK);
402
403#if defined CONFIG_AT32_ENHANCED_PORTMUX
404 at32_select_periph(MCLK_PIN, MCLK_PERIPH, 0);
405#endif
406
407
408 /*
409 * Create and register platform device
410 */
411 playpaq_snd_device = platform_device_alloc("soc-audio", 0);
412 if (playpaq_snd_device == NULL) {
413 ret = -ENOMEM;
414 goto err_device_alloc;
415 }
416
417 platform_set_drvdata(playpaq_snd_device, &snd_soc_playpaq);
418
419 ret = platform_device_add(playpaq_snd_device);
420 if (ret) {
421 pr_warning("playpaq_wm8510: platform_device_add failed (%d)\n",
422 ret);
423 goto err_device_add;
424 }
425
426 return 0;
427
428
429err_device_add:
430 if (playpaq_snd_device != NULL) {
431 platform_device_put(playpaq_snd_device);
432 playpaq_snd_device = NULL;
433 }
434err_device_alloc:
435err_set_clk:
436 if (_pll0 != NULL) {
437 clk_put(_pll0);
438 _pll0 = NULL;
439 }
440err_pll0:
441 if (_gclk0 != NULL) {
442 clk_put(_gclk0);
443 _gclk0 = NULL;
444 }
445 return ret;
446}
447
448
449static void __exit playpaq_asoc_exit(void)
450{
451 if (_gclk0 != NULL) {
452 clk_put(_gclk0);
453 _gclk0 = NULL;
454 }
455 if (_pll0 != NULL) {
456 clk_put(_pll0);
457 _pll0 = NULL;
458 }
459
460#if defined CONFIG_AT32_ENHANCED_PORTMUX
461 at32_free_pin(MCLK_PIN);
462#endif
463
464 platform_device_unregister(playpaq_snd_device);
465 playpaq_snd_device = NULL;
466}
467
468module_init(playpaq_asoc_init);
469module_exit(playpaq_asoc_exit);
470
471MODULE_AUTHOR("Geoffrey Wossum <gwossum@acm.org>");
472MODULE_DESCRIPTION("ASoC machine driver for LRS PlayPaq");
473MODULE_LICENSE("GPL");