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8#include <linux/clk.h>
9#include <linux/platform_device.h>
10#include <linux/gpio.h>
11#include <linux/delay.h>
12#include <linux/regulator/consumer.h>
13#include <linux/module.h>
14
15#include <sound/core.h>
16#include <sound/pcm.h>
17#include <sound/soc.h>
18
19#include <asm/mach-types.h>
20#include <linux/platform_data/asoc-ti-mcbsp.h>
21
22#include "omap-mcbsp.h"
23
24#define OMAP3_PANDORA_DAC_POWER_GPIO 118
25#define OMAP3_PANDORA_AMP_POWER_GPIO 14
26
27#define PREFIX "ASoC omap3pandora: "
28
29static struct regulator *omap3pandora_dac_reg;
30
31static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
32 struct snd_pcm_hw_params *params)
33{
34 struct snd_soc_pcm_runtime *rtd = substream->private_data;
35 struct snd_soc_dai *codec_dai = rtd->codec_dai;
36 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
37 int ret;
38
39
40 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
41 SND_SOC_CLOCK_IN);
42 if (ret < 0) {
43 pr_err(PREFIX "can't set codec system clock\n");
44 return ret;
45 }
46
47
48 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
49 256 * params_rate(params),
50 SND_SOC_CLOCK_IN);
51 if (ret < 0) {
52 pr_err(PREFIX "can't set cpu system clock\n");
53 return ret;
54 }
55
56 ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
57 if (ret < 0) {
58 pr_err(PREFIX "can't set SRG clock divider\n");
59 return ret;
60 }
61
62 return 0;
63}
64
65static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
66 struct snd_kcontrol *k, int event)
67{
68 int ret;
69
70
71
72
73
74 if (SND_SOC_DAPM_EVENT_ON(event)) {
75 ret = regulator_enable(omap3pandora_dac_reg);
76 if (ret) {
77 dev_err(w->dapm->dev, "Failed to power DAC: %d\n", ret);
78 return ret;
79 }
80 mdelay(1);
81 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
82 } else {
83 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
84 mdelay(1);
85 regulator_disable(omap3pandora_dac_reg);
86 }
87
88 return 0;
89}
90
91static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
92 struct snd_kcontrol *k, int event)
93{
94 if (SND_SOC_DAPM_EVENT_ON(event))
95 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
96 else
97 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
98
99 return 0;
100}
101
102
103
104
105
106
107
108
109
110static const struct snd_soc_dapm_widget omap3pandora_dapm_widgets[] = {
111 SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
112 0, 0, omap3pandora_dac_event,
113 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
114 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
115 0, 0, NULL, 0, omap3pandora_hp_event,
116 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
117 SND_SOC_DAPM_HP("Headphone Jack", NULL),
118 SND_SOC_DAPM_LINE("Line Out", NULL),
119
120 SND_SOC_DAPM_MIC("Mic (internal)", NULL),
121 SND_SOC_DAPM_MIC("Mic (external)", NULL),
122 SND_SOC_DAPM_LINE("Line In", NULL),
123};
124
125static const struct snd_soc_dapm_route omap3pandora_map[] = {
126 {"PCM DAC", NULL, "APLL Enable"},
127 {"Headphone Amplifier", NULL, "PCM DAC"},
128 {"Line Out", NULL, "PCM DAC"},
129 {"Headphone Jack", NULL, "Headphone Amplifier"},
130
131 {"AUXL", NULL, "Line In"},
132 {"AUXR", NULL, "Line In"},
133
134 {"MAINMIC", NULL, "Mic (internal)"},
135 {"Mic (internal)", NULL, "Mic Bias 1"},
136
137 {"SUBMIC", NULL, "Mic (external)"},
138 {"Mic (external)", NULL, "Mic Bias 2"},
139};
140
141static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd)
142{
143 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
144
145
146 snd_soc_dapm_nc_pin(dapm, "EARPIECE");
147 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
148 snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
149 snd_soc_dapm_nc_pin(dapm, "HSOL");
150 snd_soc_dapm_nc_pin(dapm, "HSOR");
151 snd_soc_dapm_nc_pin(dapm, "CARKITL");
152 snd_soc_dapm_nc_pin(dapm, "CARKITR");
153 snd_soc_dapm_nc_pin(dapm, "HFL");
154 snd_soc_dapm_nc_pin(dapm, "HFR");
155 snd_soc_dapm_nc_pin(dapm, "VIBRA");
156
157 return 0;
158}
159
160static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
161{
162 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
163
164
165 snd_soc_dapm_nc_pin(dapm, "HSMIC");
166 snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
167 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
168 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
169
170 return 0;
171}
172
173static const struct snd_soc_ops omap3pandora_ops = {
174 .hw_params = omap3pandora_hw_params,
175};
176
177
178static struct snd_soc_dai_link omap3pandora_dai[] = {
179 {
180 .name = "PCM1773",
181 .stream_name = "HiFi Out",
182 .cpu_dai_name = "omap-mcbsp.2",
183 .codec_dai_name = "twl4030-hifi",
184 .platform_name = "omap-mcbsp.2",
185 .codec_name = "twl4030-codec",
186 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
187 SND_SOC_DAIFMT_CBS_CFS,
188 .ops = &omap3pandora_ops,
189 .init = omap3pandora_out_init,
190 }, {
191 .name = "TWL4030",
192 .stream_name = "Line/Mic In",
193 .cpu_dai_name = "omap-mcbsp.4",
194 .codec_dai_name = "twl4030-hifi",
195 .platform_name = "omap-mcbsp.4",
196 .codec_name = "twl4030-codec",
197 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
198 SND_SOC_DAIFMT_CBS_CFS,
199 .ops = &omap3pandora_ops,
200 .init = omap3pandora_in_init,
201 }
202};
203
204
205static struct snd_soc_card snd_soc_card_omap3pandora = {
206 .name = "omap3pandora",
207 .owner = THIS_MODULE,
208 .dai_link = omap3pandora_dai,
209 .num_links = ARRAY_SIZE(omap3pandora_dai),
210
211 .dapm_widgets = omap3pandora_dapm_widgets,
212 .num_dapm_widgets = ARRAY_SIZE(omap3pandora_dapm_widgets),
213 .dapm_routes = omap3pandora_map,
214 .num_dapm_routes = ARRAY_SIZE(omap3pandora_map),
215};
216
217static struct platform_device *omap3pandora_snd_device;
218
219static int __init omap3pandora_soc_init(void)
220{
221 int ret;
222
223 if (!machine_is_omap3_pandora())
224 return -ENODEV;
225
226 pr_info("OMAP3 Pandora SoC init\n");
227
228 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
229 if (ret) {
230 pr_err(PREFIX "Failed to get DAC power GPIO\n");
231 return ret;
232 }
233
234 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
235 if (ret) {
236 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
237 goto fail0;
238 }
239
240 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
241 if (ret) {
242 pr_err(PREFIX "Failed to get amp power GPIO\n");
243 goto fail0;
244 }
245
246 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
247 if (ret) {
248 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
249 goto fail1;
250 }
251
252 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
253 if (omap3pandora_snd_device == NULL) {
254 pr_err(PREFIX "Platform device allocation failed\n");
255 ret = -ENOMEM;
256 goto fail1;
257 }
258
259 platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora);
260
261 ret = platform_device_add(omap3pandora_snd_device);
262 if (ret) {
263 pr_err(PREFIX "Unable to add platform device\n");
264 goto fail2;
265 }
266
267 omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
268 if (IS_ERR(omap3pandora_dac_reg)) {
269 pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
270 dev_name(&omap3pandora_snd_device->dev),
271 PTR_ERR(omap3pandora_dac_reg));
272 ret = PTR_ERR(omap3pandora_dac_reg);
273 goto fail3;
274 }
275
276 return 0;
277
278fail3:
279 platform_device_del(omap3pandora_snd_device);
280fail2:
281 platform_device_put(omap3pandora_snd_device);
282fail1:
283 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
284fail0:
285 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
286 return ret;
287}
288module_init(omap3pandora_soc_init);
289
290static void __exit omap3pandora_soc_exit(void)
291{
292 regulator_put(omap3pandora_dac_reg);
293 platform_device_unregister(omap3pandora_snd_device);
294 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
295 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
296}
297module_exit(omap3pandora_soc_exit);
298
299MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
300MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
301MODULE_LICENSE("GPL");
302
