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
47 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
48 {
49 snd_soc_dapm_mutex_lock(dapm);
50
51 if (spitz_spk_func == SPITZ_SPK_ON)
52 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
53 else
54 snd_soc_dapm_disable_pin_unlocked(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_unlocked(dapm, "Headset Jack");
61 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
62 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
63 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack");
70 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
71 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
72 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack");
79 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
80 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
81 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack");
88 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
89 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
90 snd_soc_dapm_enable_pin_unlocked(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_unlocked(dapm, "Headphone Jack");
98 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
99 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
100 snd_soc_dapm_disable_pin_unlocked(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
106 snd_soc_dapm_sync_unlocked(dapm);
107
108 snd_soc_dapm_mutex_unlock(dapm);
109 }
110
111 static int spitz_startup(struct snd_pcm_substream *substream)
112 {
113 struct snd_soc_pcm_runtime *rtd = substream->private_data;
114
115 /* check the jack status at stream startup */
116 spitz_ext_control(&rtd->card->dapm);
117
118 return 0;
119 }
120
121 static int spitz_hw_params(struct snd_pcm_substream *substream,
122 struct snd_pcm_hw_params *params)
123 {
124 struct snd_soc_pcm_runtime *rtd = substream->private_data;
125 struct snd_soc_dai *codec_dai = rtd->codec_dai;
126 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
127 unsigned int clk = 0;
128 int ret = 0;
129
130 switch (params_rate(params)) {
131 case 8000:
132 case 16000:
133 case 48000:
134 case 96000:
135 clk = 12288000;
136 break;
137 case 11025:
138 case 22050:
139 case 44100:
140 clk = 11289600;
141 break;
142 }
143
144 /* set the codec system clock for DAC and ADC */
145 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
146 SND_SOC_CLOCK_IN);
147 if (ret < 0)
148 return ret;
149
150 /* set the I2S system clock as input (unused) */
151 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
152 SND_SOC_CLOCK_IN);
153 if (ret < 0)
154 return ret;
155
156 return 0;
157 }
158
159 static const struct snd_soc_ops spitz_ops = {
160 .startup = spitz_startup,
161 .hw_params = spitz_hw_params,
162 };
163
164 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
166 {
167 ucontrol->value.enumerated.item[0] = spitz_jack_func;
168 return 0;
169 }
170
171 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
172 struct snd_ctl_elem_value *ucontrol)
173 {
174 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
175
176 if (spitz_jack_func == ucontrol->value.enumerated.item[0])
177 return 0;
178
179 spitz_jack_func = ucontrol->value.enumerated.item[0];
180 spitz_ext_control(&card->dapm);
181 return 1;
182 }
183
184 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol)
186 {
187 ucontrol->value.enumerated.item[0] = spitz_spk_func;
188 return 0;
189 }
190
191 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
192 struct snd_ctl_elem_value *ucontrol)
193 {
194 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
195
196 if (spitz_spk_func == ucontrol->value.enumerated.item[0])
197 return 0;
198
199 spitz_spk_func = ucontrol->value.enumerated.item[0];
200 spitz_ext_control(&card->dapm);
201 return 1;
202 }
203
204 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
205 struct snd_kcontrol *k, int event)
206 {
207 gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
208 return 0;
209 }
210
211 /* spitz machine dapm widgets */
212 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
213 SND_SOC_DAPM_HP("Headphone Jack", NULL),
214 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
215 SND_SOC_DAPM_SPK("Ext Spk", NULL),
216 SND_SOC_DAPM_LINE("Line Jack", NULL),
217
218 /* headset is a mic and mono headphone */
219 SND_SOC_DAPM_HP("Headset Jack", NULL),
220 };
221
222 /* Spitz machine audio_map */
223 static const struct snd_soc_dapm_route spitz_audio_map[] = {
224
225 /* headphone connected to LOUT1, ROUT1 */
226 {"Headphone Jack", NULL, "LOUT1"},
227 {"Headphone Jack", NULL, "ROUT1"},
228
229 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
230 {"Headset Jack", NULL, "ROUT1"},
231
232 /* ext speaker connected to LOUT2, ROUT2 */
233 {"Ext Spk", NULL, "ROUT2"},
234 {"Ext Spk", NULL, "LOUT2"},
235
236 /* mic is connected to input 1 - with bias */
237 {"LINPUT1", NULL, "Mic Bias"},
238 {"Mic Bias", NULL, "Mic Jack"},
239
240 /* line is connected to input 1 - no bias */
241 {"LINPUT1", NULL, "Line Jack"},
242 };
243
244 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
245 "Headset", "Off"};
246 static const char * const spk_function[] = {"On", "Off"};
247 static const struct soc_enum spitz_enum[] = {
248 SOC_ENUM_SINGLE_EXT(5, jack_function),
249 SOC_ENUM_SINGLE_EXT(2, spk_function),
250 };
251
252 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
253 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
254 spitz_set_jack),
255 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
256 spitz_set_spk),
257 };
258
259 /* spitz digital audio interface glue - connects codec <--> CPU */
260 static struct snd_soc_dai_link spitz_dai = {
261 .name = "wm8750",
262 .stream_name = "WM8750",
263 .cpu_dai_name = "pxa2xx-i2s",
264 .codec_dai_name = "wm8750-hifi",
265 .platform_name = "pxa-pcm-audio",
266 .codec_name = "wm8750.0-001b",
267 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
268 SND_SOC_DAIFMT_CBS_CFS,
269 .ops = &spitz_ops,
270 };
271
272 /* spitz audio machine driver */
273 static struct snd_soc_card snd_soc_spitz = {
274 .name = "Spitz",
275 .owner = THIS_MODULE,
276 .dai_link = &spitz_dai,
277 .num_links = 1,
278
279 .controls = wm8750_spitz_controls,
280 .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
281 .dapm_widgets = wm8750_dapm_widgets,
282 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
283 .dapm_routes = spitz_audio_map,
284 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
285 .fully_routed = true,
286 };
287
288 static int spitz_probe(struct platform_device *pdev)
289 {
290 struct snd_soc_card *card = &snd_soc_spitz;
291 int ret;
292
293 if (machine_is_akita())
294 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
295 else
296 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
297
298 ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
299 if (ret)
300 goto err1;
301
302 ret = gpio_direction_output(spitz_mic_gpio, 0);
303 if (ret)
304 goto err2;
305
306 card->dev = &pdev->dev;
307
308 ret = devm_snd_soc_register_card(&pdev->dev, card);
309 if (ret) {
310 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
311 ret);
312 goto err2;
313 }
314
315 return 0;
316
317 err2:
318 gpio_free(spitz_mic_gpio);
319 err1:
320 return ret;
321 }
322
323 static int spitz_remove(struct platform_device *pdev)
324 {
325 gpio_free(spitz_mic_gpio);
326 return 0;
327 }
328
329 static struct platform_driver spitz_driver = {
330 .driver = {
331 .name = "spitz-audio",
332 .pm = &snd_soc_pm_ops,
333 },
334 .probe = spitz_probe,
335 .remove = spitz_remove,
336 };
337
338 module_platform_driver(spitz_driver);
339
340 MODULE_AUTHOR("Richard Purdie");
341 MODULE_DESCRIPTION("ALSA SoC Spitz");
342 MODULE_LICENSE("GPL");
343 MODULE_ALIAS("platform:spitz-audio");
344
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