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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_codec *codec = rtd->codec;
158 struct snd_soc_dapm_context *dapm = &codec->dapm;
159
160
161 snd_soc_dapm_nc_pin(dapm, "EARPIECE");
162 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
163 snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
164 snd_soc_dapm_nc_pin(dapm, "HSOL");
165 snd_soc_dapm_nc_pin(dapm, "HSOR");
166 snd_soc_dapm_nc_pin(dapm, "CARKITL");
167 snd_soc_dapm_nc_pin(dapm, "CARKITR");
168 snd_soc_dapm_nc_pin(dapm, "HFL");
169 snd_soc_dapm_nc_pin(dapm, "HFR");
170 snd_soc_dapm_nc_pin(dapm, "VIBRA");
171
172 return 0;
173}
174
175static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
176{
177 struct snd_soc_codec *codec = rtd->codec;
178 struct snd_soc_dapm_context *dapm = &codec->dapm;
179
180
181 snd_soc_dapm_nc_pin(dapm, "HSMIC");
182 snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
183 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
184 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
185
186 return 0;
187}
188
189static struct snd_soc_ops omap3pandora_ops = {
190 .hw_params = omap3pandora_hw_params,
191};
192
193
194static struct snd_soc_dai_link omap3pandora_dai[] = {
195 {
196 .name = "PCM1773",
197 .stream_name = "HiFi Out",
198 .cpu_dai_name = "omap-mcbsp.2",
199 .codec_dai_name = "twl4030-hifi",
200 .platform_name = "omap-mcbsp.2",
201 .codec_name = "twl4030-codec",
202 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
203 SND_SOC_DAIFMT_CBS_CFS,
204 .ops = &omap3pandora_ops,
205 .init = omap3pandora_out_init,
206 }, {
207 .name = "TWL4030",
208 .stream_name = "Line/Mic In",
209 .cpu_dai_name = "omap-mcbsp.4",
210 .codec_dai_name = "twl4030-hifi",
211 .platform_name = "omap-mcbsp.4",
212 .codec_name = "twl4030-codec",
213 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
214 SND_SOC_DAIFMT_CBS_CFS,
215 .ops = &omap3pandora_ops,
216 .init = omap3pandora_in_init,
217 }
218};
219
220
221static struct snd_soc_card snd_soc_card_omap3pandora = {
222 .name = "omap3pandora",
223 .owner = THIS_MODULE,
224 .dai_link = omap3pandora_dai,
225 .num_links = ARRAY_SIZE(omap3pandora_dai),
226
227 .dapm_widgets = omap3pandora_dapm_widgets,
228 .num_dapm_widgets = ARRAY_SIZE(omap3pandora_dapm_widgets),
229 .dapm_routes = omap3pandora_map,
230 .num_dapm_routes = ARRAY_SIZE(omap3pandora_map),
231};
232
233static struct platform_device *omap3pandora_snd_device;
234
235static int __init omap3pandora_soc_init(void)
236{
237 int ret;
238
239 if (!machine_is_omap3_pandora())
240 return -ENODEV;
241
242 pr_info("OMAP3 Pandora SoC init\n");
243
244 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
245 if (ret) {
246 pr_err(PREFIX "Failed to get DAC power GPIO\n");
247 return ret;
248 }
249
250 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
251 if (ret) {
252 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
253 goto fail0;
254 }
255
256 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
257 if (ret) {
258 pr_err(PREFIX "Failed to get amp power GPIO\n");
259 goto fail0;
260 }
261
262 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
263 if (ret) {
264 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
265 goto fail1;
266 }
267
268 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
269 if (omap3pandora_snd_device == NULL) {
270 pr_err(PREFIX "Platform device allocation failed\n");
271 ret = -ENOMEM;
272 goto fail1;
273 }
274
275 platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora);
276
277 ret = platform_device_add(omap3pandora_snd_device);
278 if (ret) {
279 pr_err(PREFIX "Unable to add platform device\n");
280 goto fail2;
281 }
282
283 omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
284 if (IS_ERR(omap3pandora_dac_reg)) {
285 pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
286 dev_name(&omap3pandora_snd_device->dev),
287 PTR_ERR(omap3pandora_dac_reg));
288 ret = PTR_ERR(omap3pandora_dac_reg);
289 goto fail3;
290 }
291
292 return 0;
293
294fail3:
295 platform_device_del(omap3pandora_snd_device);
296fail2:
297 platform_device_put(omap3pandora_snd_device);
298fail1:
299 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
300fail0:
301 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
302 return ret;
303}
304module_init(omap3pandora_soc_init);
305
306static void __exit omap3pandora_soc_exit(void)
307{
308 regulator_put(omap3pandora_dac_reg);
309 platform_device_unregister(omap3pandora_snd_device);
310 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
311 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
312}
313module_exit(omap3pandora_soc_exit);
314
315MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
316MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
317MODULE_LICENSE("GPL");
318
