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>
26 #include <linux/regulator/consumer.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
33 #include <asm/mach-types.h>
34 #include <plat/mcbsp.h>
36 #include "omap-mcbsp.h"
39 #define OMAP3_PANDORA_DAC_POWER_GPIO 118
40 #define OMAP3_PANDORA_AMP_POWER_GPIO 14
42 #define PREFIX "ASoC omap3pandora: "
44 static struct regulator
*omap3pandora_dac_reg
;
46 static int omap3pandora_hw_params(struct snd_pcm_substream
*substream
,
47 struct snd_pcm_hw_params
*params
)
49 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
50 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
51 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
52 int fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
53 SND_SOC_DAIFMT_CBS_CFS
;
56 /* Set codec DAI configuration */
57 ret
= snd_soc_dai_set_fmt(codec_dai
, fmt
);
59 pr_err(PREFIX
"can't set codec DAI configuration\n");
63 /* Set cpu DAI configuration */
64 ret
= snd_soc_dai_set_fmt(cpu_dai
, fmt
);
66 pr_err(PREFIX
"can't set cpu DAI configuration\n");
70 /* Set the codec system clock for DAC and ADC */
71 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
74 pr_err(PREFIX
"can't set codec system clock\n");
78 /* Set McBSP clock to external */
79 ret
= snd_soc_dai_set_sysclk(cpu_dai
, OMAP_MCBSP_SYSCLK_CLKS_EXT
,
80 256 * params_rate(params
),
83 pr_err(PREFIX
"can't set cpu system clock\n");
87 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, OMAP_MCBSP_CLKGDV
, 8);
89 pr_err(PREFIX
"can't set SRG clock divider\n");
96 static int omap3pandora_dac_event(struct snd_soc_dapm_widget
*w
,
97 struct snd_kcontrol
*k
, int event
)
100 * The PCM1773 DAC datasheet requires 1ms delay between switching
101 * VCC power on/off and /PD pin high/low
103 if (SND_SOC_DAPM_EVENT_ON(event
)) {
104 regulator_enable(omap3pandora_dac_reg
);
106 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO
, 1);
108 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO
, 0);
110 regulator_disable(omap3pandora_dac_reg
);
116 static int omap3pandora_hp_event(struct snd_soc_dapm_widget
*w
,
117 struct snd_kcontrol
*k
, int event
)
119 if (SND_SOC_DAPM_EVENT_ON(event
))
120 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO
, 1);
122 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO
, 0);
128 * Audio paths on Pandora board:
130 * |O| ---> PCM DAC +-> AMP -> Headphone Jack
131 * |M| A +--------> Line Out
133 * |P| <--- TWL4030 <--------- Line In and MICs
135 static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets
[] = {
136 SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM
,
137 0, 0, omap3pandora_dac_event
,
138 SND_SOC_DAPM_POST_PMU
| SND_SOC_DAPM_PRE_PMD
),
139 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM
,
140 0, 0, NULL
, 0, omap3pandora_hp_event
,
141 SND_SOC_DAPM_POST_PMU
| SND_SOC_DAPM_PRE_PMD
),
142 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
143 SND_SOC_DAPM_LINE("Line Out", NULL
),
146 static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets
[] = {
147 SND_SOC_DAPM_MIC("Mic (internal)", NULL
),
148 SND_SOC_DAPM_MIC("Mic (external)", NULL
),
149 SND_SOC_DAPM_LINE("Line In", NULL
),
152 static const struct snd_soc_dapm_route omap3pandora_out_map
[] = {
153 {"PCM DAC", NULL
, "APLL Enable"},
154 {"Headphone Amplifier", NULL
, "PCM DAC"},
155 {"Line Out", NULL
, "PCM DAC"},
156 {"Headphone Jack", NULL
, "Headphone Amplifier"},
159 static const struct snd_soc_dapm_route omap3pandora_in_map
[] = {
160 {"AUXL", NULL
, "Line In"},
161 {"AUXR", NULL
, "Line In"},
163 {"MAINMIC", NULL
, "Mic Bias 1"},
164 {"Mic Bias 1", NULL
, "Mic (internal)"},
166 {"SUBMIC", NULL
, "Mic Bias 2"},
167 {"Mic Bias 2", NULL
, "Mic (external)"},
170 static int omap3pandora_out_init(struct snd_soc_pcm_runtime
*rtd
)
172 struct snd_soc_codec
*codec
= rtd
->codec
;
175 /* All TWL4030 output pins are floating */
176 snd_soc_dapm_nc_pin(codec
, "EARPIECE");
177 snd_soc_dapm_nc_pin(codec
, "PREDRIVEL");
178 snd_soc_dapm_nc_pin(codec
, "PREDRIVER");
179 snd_soc_dapm_nc_pin(codec
, "HSOL");
180 snd_soc_dapm_nc_pin(codec
, "HSOR");
181 snd_soc_dapm_nc_pin(codec
, "CARKITL");
182 snd_soc_dapm_nc_pin(codec
, "CARKITR");
183 snd_soc_dapm_nc_pin(codec
, "HFL");
184 snd_soc_dapm_nc_pin(codec
, "HFR");
185 snd_soc_dapm_nc_pin(codec
, "VIBRA");
187 ret
= snd_soc_dapm_new_controls(codec
, omap3pandora_out_dapm_widgets
,
188 ARRAY_SIZE(omap3pandora_out_dapm_widgets
));
192 snd_soc_dapm_add_routes(codec
, omap3pandora_out_map
,
193 ARRAY_SIZE(omap3pandora_out_map
));
195 return snd_soc_dapm_sync(codec
);
198 static int omap3pandora_in_init(struct snd_soc_pcm_runtime
*rtd
)
200 struct snd_soc_codec
*codec
= rtd
->codec
;
204 snd_soc_dapm_nc_pin(codec
, "HSMIC");
205 snd_soc_dapm_nc_pin(codec
, "CARKITMIC");
206 snd_soc_dapm_nc_pin(codec
, "DIGIMIC0");
207 snd_soc_dapm_nc_pin(codec
, "DIGIMIC1");
209 ret
= snd_soc_dapm_new_controls(codec
, omap3pandora_in_dapm_widgets
,
210 ARRAY_SIZE(omap3pandora_in_dapm_widgets
));
214 snd_soc_dapm_add_routes(codec
, omap3pandora_in_map
,
215 ARRAY_SIZE(omap3pandora_in_map
));
217 return snd_soc_dapm_sync(codec
);
220 static struct snd_soc_ops omap3pandora_ops
= {
221 .hw_params
= omap3pandora_hw_params
,
224 /* Digital audio interface glue - connects codec <--> CPU */
225 static struct snd_soc_dai_link omap3pandora_dai
[] = {
228 .stream_name
= "HiFi Out",
229 .cpu_dai_name
= "omap-mcbsp-dai.1",
230 .codec_dai_name
= "twl4030-hifi",
231 .platform_name
= "omap-pcm-audio",
232 .codec_name
= "twl4030-codec",
233 .ops
= &omap3pandora_ops
,
234 .init
= omap3pandora_out_init
,
237 .stream_name
= "Line/Mic In",
238 .cpu_dai_name
= "omap-mcbsp-dai.3",
239 .codec_dai_name
= "twl4030-hifi",
240 .platform_name
= "omap-pcm-audio",
241 .codec_name
= "twl4030-codec",
242 .ops
= &omap3pandora_ops
,
243 .init
= omap3pandora_in_init
,
248 static struct snd_soc_card snd_soc_card_omap3pandora
= {
249 .name
= "omap3pandora",
250 .dai_link
= omap3pandora_dai
,
251 .num_links
= ARRAY_SIZE(omap3pandora_dai
),
254 static struct platform_device
*omap3pandora_snd_device
;
256 static int __init
omap3pandora_soc_init(void)
260 if (!machine_is_omap3_pandora())
263 pr_info("OMAP3 Pandora SoC init\n");
265 ret
= gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO
, "dac_power");
267 pr_err(PREFIX
"Failed to get DAC power GPIO\n");
271 ret
= gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO
, 0);
273 pr_err(PREFIX
"Failed to set DAC power GPIO direction\n");
277 ret
= gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO
, "amp_power");
279 pr_err(PREFIX
"Failed to get amp power GPIO\n");
283 ret
= gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO
, 0);
285 pr_err(PREFIX
"Failed to set amp power GPIO direction\n");
289 omap3pandora_snd_device
= platform_device_alloc("soc-audio", -1);
290 if (omap3pandora_snd_device
== NULL
) {
291 pr_err(PREFIX
"Platform device allocation failed\n");
296 platform_set_drvdata(omap3pandora_snd_device
, &snd_soc_card_omap3pandora
);
298 ret
= platform_device_add(omap3pandora_snd_device
);
300 pr_err(PREFIX
"Unable to add platform device\n");
304 omap3pandora_dac_reg
= regulator_get(&omap3pandora_snd_device
->dev
, "vcc");
305 if (IS_ERR(omap3pandora_dac_reg
)) {
306 pr_err(PREFIX
"Failed to get DAC regulator from %s: %ld\n",
307 dev_name(&omap3pandora_snd_device
->dev
),
308 PTR_ERR(omap3pandora_dac_reg
));
315 platform_device_del(omap3pandora_snd_device
);
317 platform_device_put(omap3pandora_snd_device
);
319 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO
);
321 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO
);
324 module_init(omap3pandora_soc_init
);
326 static void __exit
omap3pandora_soc_exit(void)
328 regulator_put(omap3pandora_dac_reg
);
329 platform_device_unregister(omap3pandora_snd_device
);
330 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO
);
331 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO
);
333 module_exit(omap3pandora_soc_exit
);
335 MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
336 MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
337 MODULE_LICENSE("GPL");