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22#include <linux/clk.h>
23#include <linux/platform_device.h>
24#include <linux/gpio.h>
25#include <linux/delay.h>
26#include <linux/regulator/consumer.h>
27#include <linux/module.h>
28
29#include <sound/core.h>
30#include <sound/pcm.h>
31#include <sound/soc.h>
32
33#include <asm/mach-types.h>
34#include <linux/platform_data/asoc-ti-mcbsp.h>
35
36#include "omap-mcbsp.h"
37
38#define OMAP3_PANDORA_DAC_POWER_GPIO 118
39#define OMAP3_PANDORA_AMP_POWER_GPIO 14
40
41#define PREFIX "ASoC omap3pandora: "
42
43static struct regulator *omap3pandora_dac_reg;
44
45static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
46 struct snd_pcm_hw_params *params)
47{
48 struct snd_soc_pcm_runtime *rtd = substream->private_data;
49 struct snd_soc_dai *codec_dai = rtd->codec_dai;
50 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
51 int ret;
52
53
54 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
55 SND_SOC_CLOCK_IN);
56 if (ret < 0) {
57 pr_err(PREFIX "can't set codec system clock\n");
58 return ret;
59 }
60
61
62 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
63 256 * params_rate(params),
64 SND_SOC_CLOCK_IN);
65 if (ret < 0) {
66 pr_err(PREFIX "can't set cpu system clock\n");
67 return ret;
68 }
69
70 ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
71 if (ret < 0) {
72 pr_err(PREFIX "can't set SRG clock divider\n");
73 return ret;
74 }
75
76 return 0;
77}
78
79static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
80 struct snd_kcontrol *k, int event)
81{
82 int ret;
83
84
85
86
87
88 if (SND_SOC_DAPM_EVENT_ON(event)) {
89 ret = regulator_enable(omap3pandora_dac_reg);
90 if (ret) {
91 dev_err(w->dapm->dev, "Failed to power DAC: %d\n", ret);
92 return ret;
93 }
94 mdelay(1);
95 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
96 } else {
97 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
98 mdelay(1);
99 regulator_disable(omap3pandora_dac_reg);
100 }
101
102 return 0;
103}
104
105static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
106 struct snd_kcontrol *k, int event)
107{
108 if (SND_SOC_DAPM_EVENT_ON(event))
109 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
110 else
111 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
112
113 return 0;
114}
115
116
117
118
119
120
121
122
123
124static const struct snd_soc_dapm_widget omap3pandora_dapm_widgets[] = {
125 SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
126 0, 0, omap3pandora_dac_event,
127 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
128 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
129 0, 0, NULL, 0, omap3pandora_hp_event,
130 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
131 SND_SOC_DAPM_HP("Headphone Jack", NULL),
132 SND_SOC_DAPM_LINE("Line Out", NULL),
133
134 SND_SOC_DAPM_MIC("Mic (internal)", NULL),
135 SND_SOC_DAPM_MIC("Mic (external)", NULL),
136 SND_SOC_DAPM_LINE("Line In", NULL),
137};
138
139static const struct snd_soc_dapm_route omap3pandora_map[] = {
140 {"PCM DAC", NULL, "APLL Enable"},
141 {"Headphone Amplifier", NULL, "PCM DAC"},
142 {"Line Out", NULL, "PCM DAC"},
143 {"Headphone Jack", NULL, "Headphone Amplifier"},
144
145 {"AUXL", NULL, "Line In"},
146 {"AUXR", NULL, "Line In"},
147
148 {"MAINMIC", NULL, "Mic (internal)"},
149 {"Mic (internal)", NULL, "Mic Bias 1"},
150
151 {"SUBMIC", NULL, "Mic (external)"},
152 {"Mic (external)", NULL, "Mic Bias 2"},
153};
154
155static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd)
156{
157 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
158
159
160 snd_soc_dapm_nc_pin(dapm, "EARPIECE");
161 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
162 snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
163 snd_soc_dapm_nc_pin(dapm, "HSOL");
164 snd_soc_dapm_nc_pin(dapm, "HSOR");
165 snd_soc_dapm_nc_pin(dapm, "CARKITL");
166 snd_soc_dapm_nc_pin(dapm, "CARKITR");
167 snd_soc_dapm_nc_pin(dapm, "HFL");
168 snd_soc_dapm_nc_pin(dapm, "HFR");
169 snd_soc_dapm_nc_pin(dapm, "VIBRA");
170
171 return 0;
172}
173
174static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
175{
176 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
177
178
179 snd_soc_dapm_nc_pin(dapm, "HSMIC");
180 snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
181 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
182 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
183
184 return 0;
185}
186
187static struct snd_soc_ops omap3pandora_ops = {
188 .hw_params = omap3pandora_hw_params,
189};
190
191
192static struct snd_soc_dai_link omap3pandora_dai[] = {
193 {
194 .name = "PCM1773",
195 .stream_name = "HiFi Out",
196 .cpu_dai_name = "omap-mcbsp.2",
197 .codec_dai_name = "twl4030-hifi",
198 .platform_name = "omap-mcbsp.2",
199 .codec_name = "twl4030-codec",
200 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
201 SND_SOC_DAIFMT_CBS_CFS,
202 .ops = &omap3pandora_ops,
203 .init = omap3pandora_out_init,
204 }, {
205 .name = "TWL4030",
206 .stream_name = "Line/Mic In",
207 .cpu_dai_name = "omap-mcbsp.4",
208 .codec_dai_name = "twl4030-hifi",
209 .platform_name = "omap-mcbsp.4",
210 .codec_name = "twl4030-codec",
211 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
212 SND_SOC_DAIFMT_CBS_CFS,
213 .ops = &omap3pandora_ops,
214 .init = omap3pandora_in_init,
215 }
216};
217
218
219static struct snd_soc_card snd_soc_card_omap3pandora = {
220 .name = "omap3pandora",
221 .owner = THIS_MODULE,
222 .dai_link = omap3pandora_dai,
223 .num_links = ARRAY_SIZE(omap3pandora_dai),
224
225 .dapm_widgets = omap3pandora_dapm_widgets,
226 .num_dapm_widgets = ARRAY_SIZE(omap3pandora_dapm_widgets),
227 .dapm_routes = omap3pandora_map,
228 .num_dapm_routes = ARRAY_SIZE(omap3pandora_map),
229};
230
231static struct platform_device *omap3pandora_snd_device;
232
233static int __init omap3pandora_soc_init(void)
234{
235 int ret;
236
237 if (!machine_is_omap3_pandora())
238 return -ENODEV;
239
240 pr_info("OMAP3 Pandora SoC init\n");
241
242 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
243 if (ret) {
244 pr_err(PREFIX "Failed to get DAC power GPIO\n");
245 return ret;
246 }
247
248 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
249 if (ret) {
250 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
251 goto fail0;
252 }
253
254 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
255 if (ret) {
256 pr_err(PREFIX "Failed to get amp power GPIO\n");
257 goto fail0;
258 }
259
260 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
261 if (ret) {
262 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
263 goto fail1;
264 }
265
266 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
267 if (omap3pandora_snd_device == NULL) {
268 pr_err(PREFIX "Platform device allocation failed\n");
269 ret = -ENOMEM;
270 goto fail1;
271 }
272
273 platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora);
274
275 ret = platform_device_add(omap3pandora_snd_device);
276 if (ret) {
277 pr_err(PREFIX "Unable to add platform device\n");
278 goto fail2;
279 }
280
281 omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
282 if (IS_ERR(omap3pandora_dac_reg)) {
283 pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
284 dev_name(&omap3pandora_snd_device->dev),
285 PTR_ERR(omap3pandora_dac_reg));
286 ret = PTR_ERR(omap3pandora_dac_reg);
287 goto fail3;
288 }
289
290 return 0;
291
292fail3:
293 platform_device_del(omap3pandora_snd_device);
294fail2:
295 platform_device_put(omap3pandora_snd_device);
296fail1:
297 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
298fail0:
299 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
300 return ret;
301}
302module_init(omap3pandora_soc_init);
303
304static void __exit omap3pandora_soc_exit(void)
305{
306 regulator_put(omap3pandora_dac_reg);
307 platform_device_unregister(omap3pandora_snd_device);
308 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
309 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
310}
311module_exit(omap3pandora_soc_exit);
312
313MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
314MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
315MODULE_LICENSE("GPL");
316
