2 * omap3pandora.c -- SoC audio for Pandora Handheld Console
4 * Author: GraÅžvydas Ignotas <notasas@gmail.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 #include <linux/clk.h>
23 #include <linux/platform_device.h>
24 #include <linux/gpio.h>
25 #include <linux/delay.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/soc.h>
30 #include <sound/soc-dapm.h>
32 #include <asm/mach-types.h>
34 #include "omap-mcbsp.h"
36 #include "../codecs/twl4030.h"
38 #define OMAP3_PANDORA_DAC_POWER_GPIO 118
39 #define OMAP3_PANDORA_AMP_POWER_GPIO 14
41 #define PREFIX "ASoC omap3pandora: "
43 static int omap3pandora_cmn_hw_params(struct snd_soc_dai *codec_dai,
44 struct snd_soc_dai *cpu_dai, unsigned int fmt)
48 /* Set codec DAI configuration */
49 ret = snd_soc_dai_set_fmt(codec_dai, fmt);
51 pr_err(PREFIX "can't set codec DAI configuration\n");
55 /* Set cpu DAI configuration */
56 ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
58 pr_err(PREFIX "can't set cpu DAI configuration\n");
62 /* Set the codec system clock for DAC and ADC */
63 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
66 pr_err(PREFIX "can't set codec system clock\n");
70 /* Set McBSP clock to external */
71 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, 0,
74 pr_err(PREFIX "can't set cpu system clock\n");
78 ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
80 pr_err(PREFIX "can't set SRG clock divider\n");
87 static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
88 struct snd_pcm_hw_params *params)
90 struct snd_soc_pcm_runtime *rtd = substream->private_data;
91 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
92 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
94 return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
96 SND_SOC_DAIFMT_IB_NF |
97 SND_SOC_DAIFMT_CBS_CFS);
100 static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
101 struct snd_pcm_hw_params *params)
103 struct snd_soc_pcm_runtime *rtd = substream->private_data;
104 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
105 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
107 return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
109 SND_SOC_DAIFMT_NB_NF |
110 SND_SOC_DAIFMT_CBS_CFS);
113 static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
114 struct snd_kcontrol *k, int event)
116 if (SND_SOC_DAPM_EVENT_ON(event)) {
117 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
118 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
120 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
122 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
129 * Audio paths on Pandora board:
131 * |O| ---> PCM DAC +-> AMP -> Headphone Jack
132 * |M| A +--------> Line Out
134 * |P| <--- TWL4030 <--------- Line In and MICs
136 static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
137 SND_SOC_DAPM_DAC("PCM DAC", "Playback", SND_SOC_NOPM, 0, 0),
138 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
139 0, 0, NULL, 0, omap3pandora_hp_event,
140 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
141 SND_SOC_DAPM_HP("Headphone Jack", NULL),
142 SND_SOC_DAPM_LINE("Line Out", NULL),
145 static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
146 SND_SOC_DAPM_MIC("Mic (internal)", NULL),
147 SND_SOC_DAPM_MIC("Mic (external)", NULL),
148 SND_SOC_DAPM_LINE("Line In", NULL),
151 static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
152 {"Headphone Amplifier", NULL, "PCM DAC"},
153 {"Line Out", NULL, "PCM DAC"},
154 {"Headphone Jack", NULL, "Headphone Amplifier"},
157 static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
158 {"AUXL", NULL, "Line In"},
159 {"AUXR", NULL, "Line In"},
161 {"MAINMIC", NULL, "Mic Bias 1"},
162 {"Mic Bias 1", NULL, "Mic (internal)"},
164 {"SUBMIC", NULL, "Mic Bias 2"},
165 {"Mic Bias 2", NULL, "Mic (external)"},
168 static int omap3pandora_out_init(struct snd_soc_codec *codec)
172 /* All TWL4030 output pins are floating */
173 snd_soc_dapm_nc_pin(codec, "OUTL");
174 snd_soc_dapm_nc_pin(codec, "OUTR");
175 snd_soc_dapm_nc_pin(codec, "EARPIECE");
176 snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
177 snd_soc_dapm_nc_pin(codec, "PREDRIVER");
178 snd_soc_dapm_nc_pin(codec, "HSOL");
179 snd_soc_dapm_nc_pin(codec, "HSOR");
180 snd_soc_dapm_nc_pin(codec, "CARKITL");
181 snd_soc_dapm_nc_pin(codec, "CARKITR");
182 snd_soc_dapm_nc_pin(codec, "HFL");
183 snd_soc_dapm_nc_pin(codec, "HFR");
185 ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
186 ARRAY_SIZE(omap3pandora_out_dapm_widgets));
190 snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
191 ARRAY_SIZE(omap3pandora_out_map));
193 return snd_soc_dapm_sync(codec);
196 static int omap3pandora_in_init(struct snd_soc_codec *codec)
201 snd_soc_dapm_nc_pin(codec, "HSMIC");
202 snd_soc_dapm_nc_pin(codec, "CARKITMIC");
203 snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
204 snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
206 ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
207 ARRAY_SIZE(omap3pandora_in_dapm_widgets));
211 snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
212 ARRAY_SIZE(omap3pandora_in_map));
214 return snd_soc_dapm_sync(codec);
217 static struct snd_soc_ops omap3pandora_out_ops = {
218 .hw_params = omap3pandora_out_hw_params,
221 static struct snd_soc_ops omap3pandora_in_ops = {
222 .hw_params = omap3pandora_in_hw_params,
225 /* Digital audio interface glue - connects codec <--> CPU */
226 static struct snd_soc_dai_link omap3pandora_dai[] = {
229 .stream_name = "HiFi Out",
230 .cpu_dai = &omap_mcbsp_dai[0],
231 .codec_dai = &twl4030_dai,
232 .ops = &omap3pandora_out_ops,
233 .init = omap3pandora_out_init,
236 .stream_name = "Line/Mic In",
237 .cpu_dai = &omap_mcbsp_dai[1],
238 .codec_dai = &twl4030_dai,
239 .ops = &omap3pandora_in_ops,
240 .init = omap3pandora_in_init,
245 static struct snd_soc_card snd_soc_card_omap3pandora = {
246 .name = "omap3pandora",
247 .platform = &omap_soc_platform,
248 .dai_link = omap3pandora_dai,
249 .num_links = ARRAY_SIZE(omap3pandora_dai),
252 /* Audio subsystem */
253 static struct snd_soc_device omap3pandora_snd_data = {
254 .card = &snd_soc_card_omap3pandora,
255 .codec_dev = &soc_codec_dev_twl4030,
258 static struct platform_device *omap3pandora_snd_device;
260 static int __init omap3pandora_soc_init(void)
264 if (!machine_is_omap3_pandora())
267 pr_info("OMAP3 Pandora SoC init\n");
269 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
271 pr_err(PREFIX "Failed to get DAC power GPIO\n");
275 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
277 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
281 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
283 pr_err(PREFIX "Failed to get amp power GPIO\n");
287 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
289 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
293 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
294 if (omap3pandora_snd_device == NULL) {
295 pr_err(PREFIX "Platform device allocation failed\n");
300 platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
301 omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
302 *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
303 *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */
305 ret = platform_device_add(omap3pandora_snd_device);
307 pr_err(PREFIX "Unable to add platform device\n");
314 platform_device_put(omap3pandora_snd_device);
316 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
318 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
321 module_init(omap3pandora_soc_init);
323 static void __exit omap3pandora_soc_exit(void)
325 platform_device_unregister(omap3pandora_snd_device);
326 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
327 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
329 module_exit(omap3pandora_soc_exit);
331 MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
332 MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
333 MODULE_LICENSE("GPL");