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12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/timer.h>
15#include <linux/interrupt.h>
16#include <linux/platform_device.h>
17#include <linux/gpio.h>
18#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/soc.h>
21
22#include <asm/mach-types.h>
23#include <mach/spitz.h>
24#include "../codecs/wm8750.h"
25#include "pxa2xx-i2s.h"
26
27#define SPITZ_HP 0
28#define SPITZ_MIC 1
29#define SPITZ_LINE 2
30#define SPITZ_HEADSET 3
31#define SPITZ_HP_OFF 4
32#define SPITZ_SPK_ON 0
33#define SPITZ_SPK_OFF 1
34
35
36#define SPITZ_AUDIO_CLOCK 12288000
37
38static int spitz_jack_func;
39static int spitz_spk_func;
40static int spitz_mic_gpio;
41
42static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
43{
44 snd_soc_dapm_mutex_lock(dapm);
45
46 if (spitz_spk_func == SPITZ_SPK_ON)
47 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
48 else
49 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
50
51
52 switch (spitz_jack_func) {
53 case SPITZ_HP:
54
55 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
56 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
57 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
58 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
59 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
60 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
61 break;
62 case SPITZ_MIC:
63
64 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
65 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
66 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
67 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
68 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
69 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
70 break;
71 case SPITZ_LINE:
72
73 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
74 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
75 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
76 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
77 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
78 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
79 break;
80 case SPITZ_HEADSET:
81
82 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
83 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
84 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
85 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
86 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
87 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
88 break;
89 case SPITZ_HP_OFF:
90
91
92 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
93 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
94 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
95 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
96 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
97 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
98 break;
99 }
100
101 snd_soc_dapm_sync_unlocked(dapm);
102
103 snd_soc_dapm_mutex_unlock(dapm);
104}
105
106static int spitz_startup(struct snd_pcm_substream *substream)
107{
108 struct snd_soc_pcm_runtime *rtd = substream->private_data;
109
110
111 spitz_ext_control(&rtd->card->dapm);
112
113 return 0;
114}
115
116static int spitz_hw_params(struct snd_pcm_substream *substream,
117 struct snd_pcm_hw_params *params)
118{
119 struct snd_soc_pcm_runtime *rtd = substream->private_data;
120 struct snd_soc_dai *codec_dai = rtd->codec_dai;
121 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
122 unsigned int clk = 0;
123 int ret = 0;
124
125 switch (params_rate(params)) {
126 case 8000:
127 case 16000:
128 case 48000:
129 case 96000:
130 clk = 12288000;
131 break;
132 case 11025:
133 case 22050:
134 case 44100:
135 clk = 11289600;
136 break;
137 }
138
139
140 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
141 SND_SOC_CLOCK_IN);
142 if (ret < 0)
143 return ret;
144
145
146 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
147 SND_SOC_CLOCK_IN);
148 if (ret < 0)
149 return ret;
150
151 return 0;
152}
153
154static const struct snd_soc_ops spitz_ops = {
155 .startup = spitz_startup,
156 .hw_params = spitz_hw_params,
157};
158
159static int spitz_get_jack(struct snd_kcontrol *kcontrol,
160 struct snd_ctl_elem_value *ucontrol)
161{
162 ucontrol->value.enumerated.item[0] = spitz_jack_func;
163 return 0;
164}
165
166static int spitz_set_jack(struct snd_kcontrol *kcontrol,
167 struct snd_ctl_elem_value *ucontrol)
168{
169 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
170
171 if (spitz_jack_func == ucontrol->value.enumerated.item[0])
172 return 0;
173
174 spitz_jack_func = ucontrol->value.enumerated.item[0];
175 spitz_ext_control(&card->dapm);
176 return 1;
177}
178
179static int spitz_get_spk(struct snd_kcontrol *kcontrol,
180 struct snd_ctl_elem_value *ucontrol)
181{
182 ucontrol->value.enumerated.item[0] = spitz_spk_func;
183 return 0;
184}
185
186static int spitz_set_spk(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol)
188{
189 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
190
191 if (spitz_spk_func == ucontrol->value.enumerated.item[0])
192 return 0;
193
194 spitz_spk_func = ucontrol->value.enumerated.item[0];
195 spitz_ext_control(&card->dapm);
196 return 1;
197}
198
199static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
200 struct snd_kcontrol *k, int event)
201{
202 gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
203 return 0;
204}
205
206
207static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
208 SND_SOC_DAPM_HP("Headphone Jack", NULL),
209 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
210 SND_SOC_DAPM_SPK("Ext Spk", NULL),
211 SND_SOC_DAPM_LINE("Line Jack", NULL),
212
213
214 SND_SOC_DAPM_HP("Headset Jack", NULL),
215};
216
217
218static const struct snd_soc_dapm_route spitz_audio_map[] = {
219
220
221 {"Headphone Jack", NULL, "LOUT1"},
222 {"Headphone Jack", NULL, "ROUT1"},
223
224
225 {"Headset Jack", NULL, "ROUT1"},
226
227
228 {"Ext Spk", NULL, "ROUT2"},
229 {"Ext Spk", NULL, "LOUT2"},
230
231
232 {"LINPUT1", NULL, "Mic Bias"},
233 {"Mic Bias", NULL, "Mic Jack"},
234
235
236 {"LINPUT1", NULL, "Line Jack"},
237};
238
239static const char * const jack_function[] = {"Headphone", "Mic", "Line",
240 "Headset", "Off"};
241static const char * const spk_function[] = {"On", "Off"};
242static const struct soc_enum spitz_enum[] = {
243 SOC_ENUM_SINGLE_EXT(5, jack_function),
244 SOC_ENUM_SINGLE_EXT(2, spk_function),
245};
246
247static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
248 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
249 spitz_set_jack),
250 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
251 spitz_set_spk),
252};
253
254
255SND_SOC_DAILINK_DEFS(wm8750,
256 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
257 DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")),
258 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
259
260static struct snd_soc_dai_link spitz_dai = {
261 .name = "wm8750",
262 .stream_name = "WM8750",
263 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
264 SND_SOC_DAIFMT_CBS_CFS,
265 .ops = &spitz_ops,
266 SND_SOC_DAILINK_REG(wm8750),
267};
268
269
270static struct snd_soc_card snd_soc_spitz = {
271 .name = "Spitz",
272 .owner = THIS_MODULE,
273 .dai_link = &spitz_dai,
274 .num_links = 1,
275
276 .controls = wm8750_spitz_controls,
277 .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
278 .dapm_widgets = wm8750_dapm_widgets,
279 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
280 .dapm_routes = spitz_audio_map,
281 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
282 .fully_routed = true,
283};
284
285static int spitz_probe(struct platform_device *pdev)
286{
287 struct snd_soc_card *card = &snd_soc_spitz;
288 int ret;
289
290 if (machine_is_akita())
291 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
292 else
293 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
294
295 ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
296 if (ret)
297 goto err1;
298
299 ret = gpio_direction_output(spitz_mic_gpio, 0);
300 if (ret)
301 goto err2;
302
303 card->dev = &pdev->dev;
304
305 ret = devm_snd_soc_register_card(&pdev->dev, card);
306 if (ret) {
307 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
308 ret);
309 goto err2;
310 }
311
312 return 0;
313
314err2:
315 gpio_free(spitz_mic_gpio);
316err1:
317 return ret;
318}
319
320static int spitz_remove(struct platform_device *pdev)
321{
322 gpio_free(spitz_mic_gpio);
323 return 0;
324}
325
326static struct platform_driver spitz_driver = {
327 .driver = {
328 .name = "spitz-audio",
329 .pm = &snd_soc_pm_ops,
330 },
331 .probe = spitz_probe,
332 .remove = spitz_remove,
333};
334
335module_platform_driver(spitz_driver);
336
337MODULE_AUTHOR("Richard Purdie");
338MODULE_DESCRIPTION("ALSA SoC Spitz");
339MODULE_LICENSE("GPL");
340MODULE_ALIAS("platform:spitz-audio");
341
