1 /*
2 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
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 <linux/gpio.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/soc.h>
26
27 #include <asm/mach-types.h>
28 #include <mach/spitz.h>
29 #include "../codecs/wm8750.h"
30 #include "pxa2xx-i2s.h"
31
32 #define SPITZ_HP 0
33 #define SPITZ_MIC 1
34 #define SPITZ_LINE 2
35 #define SPITZ_HEADSET 3
36 #define SPITZ_HP_OFF 4
37 #define SPITZ_SPK_ON 0
38 #define SPITZ_SPK_OFF 1
39
40 /* audio clock in Hz - rounded from 12.235MHz */
41 #define SPITZ_AUDIO_CLOCK 12288000
42
43 static int spitz_jack_func;
44 static int spitz_spk_func;
45 static int spitz_mic_gpio;
46
spitz_ext_control(struct snd_soc_codec * codec)47 static void spitz_ext_control(struct snd_soc_codec *codec)
48 {
49 struct snd_soc_dapm_context *dapm = &codec->dapm;
50
51 if (spitz_spk_func == SPITZ_SPK_ON)
52 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
53 else
54 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
55
56 /* set up jack connection */
57 switch (spitz_jack_func) {
58 case SPITZ_HP:
59 /* enable and unmute hp jack, disable mic bias */
60 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
61 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
62 snd_soc_dapm_disable_pin(dapm, "Line Jack");
63 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
64 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
65 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
66 break;
67 case SPITZ_MIC:
68 /* enable mic jack and bias, mute hp */
69 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
70 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
71 snd_soc_dapm_disable_pin(dapm, "Line Jack");
72 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
73 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
74 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
75 break;
76 case SPITZ_LINE:
77 /* enable line jack, disable mic bias and mute hp */
78 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
79 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
80 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
81 snd_soc_dapm_enable_pin(dapm, "Line Jack");
82 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
83 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
84 break;
85 case SPITZ_HEADSET:
86 /* enable and unmute headset jack enable mic bias, mute L hp */
87 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
88 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
89 snd_soc_dapm_disable_pin(dapm, "Line Jack");
90 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
91 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
92 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
93 break;
94 case SPITZ_HP_OFF:
95
96 /* jack removed, everything off */
97 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
98 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
99 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
100 snd_soc_dapm_disable_pin(dapm, "Line Jack");
101 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
102 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
103 break;
104 }
105 snd_soc_dapm_sync(dapm);
106 }
107
spitz_startup(struct snd_pcm_substream * substream)108 static int spitz_startup(struct snd_pcm_substream *substream)
109 {
110 struct snd_soc_pcm_runtime *rtd = substream->private_data;
111 struct snd_soc_codec *codec = rtd->codec;
112
113 mutex_lock(&codec->mutex);
114
115 /* check the jack status at stream startup */
116 spitz_ext_control(codec);
117
118 mutex_unlock(&codec->mutex);
119
120 return 0;
121 }
122
spitz_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)123 static int spitz_hw_params(struct snd_pcm_substream *substream,
124 struct snd_pcm_hw_params *params)
125 {
126 struct snd_soc_pcm_runtime *rtd = substream->private_data;
127 struct snd_soc_dai *codec_dai = rtd->codec_dai;
128 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
129 unsigned int clk = 0;
130 int ret = 0;
131
132 switch (params_rate(params)) {
133 case 8000:
134 case 16000:
135 case 48000:
136 case 96000:
137 clk = 12288000;
138 break;
139 case 11025:
140 case 22050:
141 case 44100:
142 clk = 11289600;
143 break;
144 }
145
146 /* set the codec system clock for DAC and ADC */
147 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
148 SND_SOC_CLOCK_IN);
149 if (ret < 0)
150 return ret;
151
152 /* set the I2S system clock as input (unused) */
153 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
154 SND_SOC_CLOCK_IN);
155 if (ret < 0)
156 return ret;
157
158 return 0;
159 }
160
161 static struct snd_soc_ops spitz_ops = {
162 .startup = spitz_startup,
163 .hw_params = spitz_hw_params,
164 };
165
spitz_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)166 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
167 struct snd_ctl_elem_value *ucontrol)
168 {
169 ucontrol->value.integer.value[0] = spitz_jack_func;
170 return 0;
171 }
172
spitz_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)173 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
174 struct snd_ctl_elem_value *ucontrol)
175 {
176 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
177
178 if (spitz_jack_func == ucontrol->value.integer.value[0])
179 return 0;
180
181 spitz_jack_func = ucontrol->value.integer.value[0];
182 spitz_ext_control(codec);
183 return 1;
184 }
185
spitz_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)186 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol)
188 {
189 ucontrol->value.integer.value[0] = spitz_spk_func;
190 return 0;
191 }
192
spitz_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)193 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
194 struct snd_ctl_elem_value *ucontrol)
195 {
196 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
197
198 if (spitz_spk_func == ucontrol->value.integer.value[0])
199 return 0;
200
201 spitz_spk_func = ucontrol->value.integer.value[0];
202 spitz_ext_control(codec);
203 return 1;
204 }
205
spitz_mic_bias(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)206 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
207 struct snd_kcontrol *k, int event)
208 {
209 gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
210 return 0;
211 }
212
213 /* spitz machine dapm widgets */
214 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
215 SND_SOC_DAPM_HP("Headphone Jack", NULL),
216 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
217 SND_SOC_DAPM_SPK("Ext Spk", NULL),
218 SND_SOC_DAPM_LINE("Line Jack", NULL),
219
220 /* headset is a mic and mono headphone */
221 SND_SOC_DAPM_HP("Headset Jack", NULL),
222 };
223
224 /* Spitz machine audio_map */
225 static const struct snd_soc_dapm_route spitz_audio_map[] = {
226
227 /* headphone connected to LOUT1, ROUT1 */
228 {"Headphone Jack", NULL, "LOUT1"},
229 {"Headphone Jack", NULL, "ROUT1"},
230
231 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
232 {"Headset Jack", NULL, "ROUT1"},
233
234 /* ext speaker connected to LOUT2, ROUT2 */
235 {"Ext Spk", NULL , "ROUT2"},
236 {"Ext Spk", NULL , "LOUT2"},
237
238 /* mic is connected to input 1 - with bias */
239 {"LINPUT1", NULL, "Mic Bias"},
240 {"Mic Bias", NULL, "Mic Jack"},
241
242 /* line is connected to input 1 - no bias */
243 {"LINPUT1", NULL, "Line Jack"},
244 };
245
246 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
247 "Off"};
248 static const char *spk_function[] = {"On", "Off"};
249 static const struct soc_enum spitz_enum[] = {
250 SOC_ENUM_SINGLE_EXT(5, jack_function),
251 SOC_ENUM_SINGLE_EXT(2, spk_function),
252 };
253
254 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
255 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
256 spitz_set_jack),
257 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
258 spitz_set_spk),
259 };
260
261 /*
262 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
263 */
spitz_wm8750_init(struct snd_soc_pcm_runtime * rtd)264 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
265 {
266 struct snd_soc_codec *codec = rtd->codec;
267 struct snd_soc_dapm_context *dapm = &codec->dapm;
268
269 /* NC codec pins */
270 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
271 snd_soc_dapm_nc_pin(dapm, "LINPUT2");
272 snd_soc_dapm_nc_pin(dapm, "RINPUT2");
273 snd_soc_dapm_nc_pin(dapm, "LINPUT3");
274 snd_soc_dapm_nc_pin(dapm, "RINPUT3");
275 snd_soc_dapm_nc_pin(dapm, "OUT3");
276 snd_soc_dapm_nc_pin(dapm, "MONO1");
277
278 return 0;
279 }
280
281 /* spitz digital audio interface glue - connects codec <--> CPU */
282 static struct snd_soc_dai_link spitz_dai = {
283 .name = "wm8750",
284 .stream_name = "WM8750",
285 .cpu_dai_name = "pxa2xx-i2s",
286 .codec_dai_name = "wm8750-hifi",
287 .platform_name = "pxa-pcm-audio",
288 .codec_name = "wm8750.0-001b",
289 .init = spitz_wm8750_init,
290 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
291 SND_SOC_DAIFMT_CBS_CFS,
292 .ops = &spitz_ops,
293 };
294
295 /* spitz audio machine driver */
296 static struct snd_soc_card snd_soc_spitz = {
297 .name = "Spitz",
298 .owner = THIS_MODULE,
299 .dai_link = &spitz_dai,
300 .num_links = 1,
301
302 .controls = wm8750_spitz_controls,
303 .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
304 .dapm_widgets = wm8750_dapm_widgets,
305 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
306 .dapm_routes = spitz_audio_map,
307 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
308 };
309
310 static struct platform_device *spitz_snd_device;
311
spitz_init(void)312 static int __init spitz_init(void)
313 {
314 int ret;
315
316 if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
317 return -ENODEV;
318
319 if (machine_is_borzoi() || machine_is_spitz())
320 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
321 else
322 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
323
324 ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
325 if (ret)
326 goto err1;
327
328 ret = gpio_direction_output(spitz_mic_gpio, 0);
329 if (ret)
330 goto err2;
331
332 spitz_snd_device = platform_device_alloc("soc-audio", -1);
333 if (!spitz_snd_device) {
334 ret = -ENOMEM;
335 goto err2;
336 }
337
338 platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
339
340 ret = platform_device_add(spitz_snd_device);
341 if (ret)
342 goto err3;
343
344 return 0;
345
346 err3:
347 platform_device_put(spitz_snd_device);
348 err2:
349 gpio_free(spitz_mic_gpio);
350 err1:
351 return ret;
352 }
353
spitz_exit(void)354 static void __exit spitz_exit(void)
355 {
356 platform_device_unregister(spitz_snd_device);
357 gpio_free(spitz_mic_gpio);
358 }
359
360 module_init(spitz_init);
361 module_exit(spitz_exit);
362
363 MODULE_AUTHOR("Richard Purdie");
364 MODULE_DESCRIPTION("ALSA SoC Spitz");
365 MODULE_LICENSE("GPL");
366