1 /*
2 * poodle.c -- SoC audio for Poodle
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
8 * Richard Purdie <richard@openedhand.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/timer.h>
20 #include <linux/interrupt.h>
21 #include <linux/platform_device.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
26
27 #include <asm/mach-types.h>
28 #include <asm/hardware/locomo.h>
29 #include <asm/arch/pxa-regs.h>
30 #include <asm/arch/hardware.h>
31 #include <asm/arch/poodle.h>
32 #include <asm/arch/audio.h>
33
34 #include "../codecs/wm8731.h"
35 #include "pxa2xx-pcm.h"
36 #include "pxa2xx-i2s.h"
37
38 #define POODLE_HP 1
39 #define POODLE_HP_OFF 0
40 #define POODLE_SPK_ON 1
41 #define POODLE_SPK_OFF 0
42
43 /* audio clock in Hz - rounded from 12.235MHz */
44 #define POODLE_AUDIO_CLOCK 12288000
45
46 static int poodle_jack_func;
47 static int poodle_spk_func;
48
49 static void poodle_ext_control(struct snd_soc_codec *codec)
50 {
51 int spk = 0;
52
53 /* set up jack connection */
54 if (poodle_jack_func == POODLE_HP) {
55 /* set = unmute headphone */
56 locomo_gpio_write(&poodle_locomo_device.dev,
57 POODLE_LOCOMO_GPIO_MUTE_L, 1);
58 locomo_gpio_write(&poodle_locomo_device.dev,
59 POODLE_LOCOMO_GPIO_MUTE_R, 1);
60 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
61 } else {
62 locomo_gpio_write(&poodle_locomo_device.dev,
63 POODLE_LOCOMO_GPIO_MUTE_L, 0);
64 locomo_gpio_write(&poodle_locomo_device.dev,
65 POODLE_LOCOMO_GPIO_MUTE_R, 0);
66 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
67 }
68
69 if (poodle_spk_func == POODLE_SPK_ON)
70 spk = 1;
71
72 /* set the enpoints to their new connetion states */
73 snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
74
75 /* signal a DAPM event */
76 snd_soc_dapm_sync_endpoints(codec);
77 }
78
79 static int poodle_startup(struct snd_pcm_substream *substream)
80 {
81 struct snd_soc_pcm_runtime *rtd = substream->private_data;
82 struct snd_soc_codec *codec = rtd->socdev->codec;
83
84 /* check the jack status at stream startup */
85 poodle_ext_control(codec);
86 return 0;
87 }
88
89 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
90 static int poodle_shutdown(struct snd_pcm_substream *substream)
91 {
92 struct snd_soc_pcm_runtime *rtd = substream->private_data;
93 struct snd_soc_codec *codec = rtd->socdev->codec;
94
95 /* set = unmute headphone */
96 locomo_gpio_write(&poodle_locomo_device.dev,
97 POODLE_LOCOMO_GPIO_MUTE_L, 1);
98 locomo_gpio_write(&poodle_locomo_device.dev,
99 POODLE_LOCOMO_GPIO_MUTE_R, 1);
100 return 0;
101 }
102
103 static int poodle_hw_params(struct snd_pcm_substream *substream,
104 struct snd_pcm_hw_params *params)
105 {
106 struct snd_soc_pcm_runtime *rtd = substream->private_data;
107 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
108 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
109 unsigned int clk = 0;
110 int ret = 0;
111
112 switch (params_rate(params)) {
113 case 8000:
114 case 16000:
115 case 48000:
116 case 96000:
117 clk = 12288000;
118 break;
119 case 11025:
120 case 22050:
121 case 44100:
122 clk = 11289600;
123 break;
124 }
125
126 /* set codec DAI configuration */
127 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
128 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
129 if (ret < 0)
130 return ret;
131
132 /* set cpu DAI configuration */
133 ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
134 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
135 if (ret < 0)
136 return ret;
137
138 /* set the codec system clock for DAC and ADC */
139 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
140 SND_SOC_CLOCK_IN);
141 if (ret < 0)
142 return ret;
143
144 /* set the I2S system clock as input (unused) */
145 ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
146 SND_SOC_CLOCK_IN);
147 if (ret < 0)
148 return ret;
149
150 return 0;
151 }
152
153 static struct snd_soc_ops poodle_ops = {
154 .startup = poodle_startup,
155 .hw_params = poodle_hw_params,
156 .shutdown = poodle_shutdown,
157 };
158
159 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
160 struct snd_ctl_elem_value *ucontrol)
161 {
162 ucontrol->value.integer.value[0] = poodle_jack_func;
163 return 0;
164 }
165
166 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
167 struct snd_ctl_elem_value *ucontrol)
168 {
169 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
170
171 if (poodle_jack_func == ucontrol->value.integer.value[0])
172 return 0;
173
174 poodle_jack_func = ucontrol->value.integer.value[0];
175 poodle_ext_control(codec);
176 return 1;
177 }
178
179 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
180 struct snd_ctl_elem_value *ucontrol)
181 {
182 ucontrol->value.integer.value[0] = poodle_spk_func;
183 return 0;
184 }
185
186 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol)
188 {
189 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
190
191 if (poodle_spk_func == ucontrol->value.integer.value[0])
192 return 0;
193
194 poodle_spk_func = ucontrol->value.integer.value[0];
195 poodle_ext_control(codec);
196 return 1;
197 }
198
199 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
200 struct snd_kcontrol *k, int event)
201 {
202 if (SND_SOC_DAPM_EVENT_ON(event))
203 locomo_gpio_write(&poodle_locomo_device.dev,
204 POODLE_LOCOMO_GPIO_AMP_ON, 0);
205 else
206 locomo_gpio_write(&poodle_locomo_device.dev,
207 POODLE_LOCOMO_GPIO_AMP_ON, 1);
208
209 return 0;
210 }
211
212 /* poodle machine dapm widgets */
213 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
214 SND_SOC_DAPM_HP("Headphone Jack", NULL),
215 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
216 };
217
218 /* Corgi machine audio_mapnections to the codec pins */
219 static const char *audio_map[][3] = {
220
221 /* headphone connected to LHPOUT1, RHPOUT1 */
222 {"Headphone Jack", NULL, "LHPOUT"},
223 {"Headphone Jack", NULL, "RHPOUT"},
224
225 /* speaker connected to LOUT, ROUT */
226 {"Ext Spk", NULL, "ROUT"},
227 {"Ext Spk", NULL, "LOUT"},
228
229 {NULL, NULL, NULL},
230 };
231
232 static const char *jack_function[] = {"Off", "Headphone"};
233 static const char *spk_function[] = {"Off", "On"};
234 static const struct soc_enum poodle_enum[] = {
235 SOC_ENUM_SINGLE_EXT(2, jack_function),
236 SOC_ENUM_SINGLE_EXT(2, spk_function),
237 };
238
239 static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
240 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
241 poodle_set_jack),
242 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
243 poodle_set_spk),
244 };
245
246 /*
247 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
248 */
249 static int poodle_wm8731_init(struct snd_soc_codec *codec)
250 {
251 int i, err;
252
253 snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
254 snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
255 snd_soc_dapm_set_endpoint(codec, "MICIN", 1);
256
257 /* Add poodle specific controls */
258 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
259 err = snd_ctl_add(codec->card,
260 snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL));
261 if (err < 0)
262 return err;
263 }
264
265 /* Add poodle specific widgets */
266 for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
267 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
268 }
269
270 /* Set up poodle specific audio path audio_map */
271 for (i = 0; audio_map[i][0] != NULL; i++) {
272 snd_soc_dapm_connect_input(codec, audio_map[i][0],
273 audio_map[i][1], audio_map[i][2]);
274 }
275
276 snd_soc_dapm_sync_endpoints(codec);
277 return 0;
278 }
279
280 /* poodle digital audio interface glue - connects codec <--> CPU */
281 static struct snd_soc_dai_link poodle_dai = {
282 .name = "WM8731",
283 .stream_name = "WM8731",
284 .cpu_dai = &pxa_i2s_dai,
285 .codec_dai = &wm8731_dai,
286 .init = poodle_wm8731_init,
287 .ops = &poodle_ops,
288 };
289
290 /* poodle audio machine driver */
291 static struct snd_soc_machine snd_soc_machine_poodle = {
292 .name = "Poodle",
293 .dai_link = &poodle_dai,
294 .num_links = 1,
295 };
296
297 /* poodle audio private data */
298 static struct wm8731_setup_data poodle_wm8731_setup = {
299 .i2c_address = 0x1b,
300 };
301
302 /* poodle audio subsystem */
303 static struct snd_soc_device poodle_snd_devdata = {
304 .machine = &snd_soc_machine_poodle,
305 .platform = &pxa2xx_soc_platform,
306 .codec_dev = &soc_codec_dev_wm8731,
307 .codec_data = &poodle_wm8731_setup,
308 };
309
310 static struct platform_device *poodle_snd_device;
311
312 static int __init poodle_init(void)
313 {
314 int ret;
315
316 if (!machine_is_poodle())
317 return -ENODEV;
318
319 locomo_gpio_set_dir(&poodle_locomo_device.dev,
320 POODLE_LOCOMO_GPIO_AMP_ON, 0);
321 /* should we mute HP at startup - burning power ?*/
322 locomo_gpio_set_dir(&poodle_locomo_device.dev,
323 POODLE_LOCOMO_GPIO_MUTE_L, 0);
324 locomo_gpio_set_dir(&poodle_locomo_device.dev,
325 POODLE_LOCOMO_GPIO_MUTE_R, 0);
326
327 poodle_snd_device = platform_device_alloc("soc-audio", -1);
328 if (!poodle_snd_device)
329 return -ENOMEM;
330
331 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
332 poodle_snd_devdata.dev = &poodle_snd_device->dev;
333 ret = platform_device_add(poodle_snd_device);
334
335 if (ret)
336 platform_device_put(poodle_snd_device);
337
338 return ret;
339 }
340
341 static void __exit poodle_exit(void)
342 {
343 platform_device_unregister(poodle_snd_device);
344 }
345
346 module_init(poodle_init);
347 module_exit(poodle_exit);
348
349 /* Module information */
350 MODULE_AUTHOR("Richard Purdie");
351 MODULE_DESCRIPTION("ALSA SoC Poodle");
352 MODULE_LICENSE("GPL");
353
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