2 * zoom2.c -- SoC audio for Zoom2
4 * Author: Misael Lopez Cruz <x0052729@ti.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 <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
29 #include <asm/mach-types.h>
30 #include <mach/hardware.h>
31 #include <mach/gpio.h>
32 #include <plat/mcbsp.h>
34 #include "omap-mcbsp.h"
36 #include "../codecs/twl4030.h"
38 #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
39 #define ZOOM2_HEADSET_EXTMUTE_GPIO 153
41 static int zoom2_hw_params(struct snd_pcm_substream
*substream
,
42 struct snd_pcm_hw_params
*params
)
44 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
45 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
46 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
49 /* Set codec DAI configuration */
50 ret
= snd_soc_dai_set_fmt(codec_dai
,
52 SND_SOC_DAIFMT_NB_NF
|
53 SND_SOC_DAIFMT_CBM_CFM
);
55 printk(KERN_ERR
"can't set codec DAI configuration\n");
59 /* Set cpu DAI configuration */
60 ret
= snd_soc_dai_set_fmt(cpu_dai
,
62 SND_SOC_DAIFMT_NB_NF
|
63 SND_SOC_DAIFMT_CBM_CFM
);
65 printk(KERN_ERR
"can't set cpu DAI configuration\n");
69 /* Set the codec system clock for DAC and ADC */
70 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
73 printk(KERN_ERR
"can't set codec system clock\n");
80 static struct snd_soc_ops zoom2_ops
= {
81 .hw_params
= zoom2_hw_params
,
84 static int zoom2_hw_voice_params(struct snd_pcm_substream
*substream
,
85 struct snd_pcm_hw_params
*params
)
87 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
88 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
89 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
92 /* Set codec DAI configuration */
93 ret
= snd_soc_dai_set_fmt(codec_dai
,
94 SND_SOC_DAIFMT_DSP_A
|
95 SND_SOC_DAIFMT_IB_NF
|
96 SND_SOC_DAIFMT_CBM_CFM
);
98 printk(KERN_ERR
"can't set codec DAI configuration\n");
102 /* Set cpu DAI configuration */
103 ret
= snd_soc_dai_set_fmt(cpu_dai
,
104 SND_SOC_DAIFMT_DSP_A
|
105 SND_SOC_DAIFMT_IB_NF
|
106 SND_SOC_DAIFMT_CBM_CFM
);
108 printk(KERN_ERR
"can't set cpu DAI configuration\n");
112 /* Set the codec system clock for DAC and ADC */
113 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
116 printk(KERN_ERR
"can't set codec system clock\n");
123 static struct snd_soc_ops zoom2_voice_ops
= {
124 .hw_params
= zoom2_hw_voice_params
,
127 /* Zoom2 machine DAPM */
128 static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets
[] = {
129 SND_SOC_DAPM_MIC("Ext Mic", NULL
),
130 SND_SOC_DAPM_SPK("Ext Spk", NULL
),
131 SND_SOC_DAPM_MIC("Headset Mic", NULL
),
132 SND_SOC_DAPM_HP("Headset Stereophone", NULL
),
133 SND_SOC_DAPM_LINE("Aux In", NULL
),
136 static const struct snd_soc_dapm_route audio_map
[] = {
137 /* External Mics: MAINMIC, SUBMIC with bias*/
138 {"MAINMIC", NULL
, "Mic Bias 1"},
139 {"SUBMIC", NULL
, "Mic Bias 2"},
140 {"Mic Bias 1", NULL
, "Ext Mic"},
141 {"Mic Bias 2", NULL
, "Ext Mic"},
143 /* External Speakers: HFL, HFR */
144 {"Ext Spk", NULL
, "HFL"},
145 {"Ext Spk", NULL
, "HFR"},
147 /* Headset Stereophone: HSOL, HSOR */
148 {"Headset Stereophone", NULL
, "HSOL"},
149 {"Headset Stereophone", NULL
, "HSOR"},
151 /* Headset Mic: HSMIC with bias */
152 {"HSMIC", NULL
, "Headset Mic Bias"},
153 {"Headset Mic Bias", NULL
, "Headset Mic"},
155 /* Aux In: AUXL, AUXR */
156 {"Aux In", NULL
, "AUXL"},
157 {"Aux In", NULL
, "AUXR"},
160 static int zoom2_twl4030_init(struct snd_soc_codec
*codec
)
164 /* Add Zoom2 specific widgets */
165 ret
= snd_soc_dapm_new_controls(codec
, zoom2_twl4030_dapm_widgets
,
166 ARRAY_SIZE(zoom2_twl4030_dapm_widgets
));
170 /* Set up Zoom2 specific audio path audio_map */
171 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
173 /* Zoom2 connected pins */
174 snd_soc_dapm_enable_pin(codec
, "Ext Mic");
175 snd_soc_dapm_enable_pin(codec
, "Ext Spk");
176 snd_soc_dapm_enable_pin(codec
, "Headset Mic");
177 snd_soc_dapm_enable_pin(codec
, "Headset Stereophone");
178 snd_soc_dapm_enable_pin(codec
, "Aux In");
180 /* TWL4030 not connected pins */
181 snd_soc_dapm_nc_pin(codec
, "CARKITMIC");
182 snd_soc_dapm_nc_pin(codec
, "DIGIMIC0");
183 snd_soc_dapm_nc_pin(codec
, "DIGIMIC1");
185 snd_soc_dapm_nc_pin(codec
, "OUTL");
186 snd_soc_dapm_nc_pin(codec
, "OUTR");
187 snd_soc_dapm_nc_pin(codec
, "EARPIECE");
188 snd_soc_dapm_nc_pin(codec
, "PREDRIVEL");
189 snd_soc_dapm_nc_pin(codec
, "PREDRIVER");
190 snd_soc_dapm_nc_pin(codec
, "CARKITL");
191 snd_soc_dapm_nc_pin(codec
, "CARKITR");
193 ret
= snd_soc_dapm_sync(codec
);
198 static int zoom2_twl4030_voice_init(struct snd_soc_codec
*codec
)
202 /* Enable voice interface */
203 reg
= codec
->read(codec
, TWL4030_REG_VOICE_IF
);
204 reg
|= TWL4030_VIF_DIN_EN
| TWL4030_VIF_DOUT_EN
| TWL4030_VIF_EN
;
205 codec
->write(codec
, TWL4030_REG_VOICE_IF
, reg
);
210 /* Digital audio interface glue - connects codec <--> CPU */
211 static struct snd_soc_dai_link zoom2_dai
[] = {
213 .name
= "TWL4030 I2S",
214 .stream_name
= "TWL4030 Audio",
215 .cpu_dai
= &omap_mcbsp_dai
[0],
216 .codec_dai
= &twl4030_dai
[TWL4030_DAI_HIFI
],
217 .init
= zoom2_twl4030_init
,
221 .name
= "TWL4030 PCM",
222 .stream_name
= "TWL4030 Voice",
223 .cpu_dai
= &omap_mcbsp_dai
[1],
224 .codec_dai
= &twl4030_dai
[TWL4030_DAI_VOICE
],
225 .init
= zoom2_twl4030_voice_init
,
226 .ops
= &zoom2_voice_ops
,
230 /* Audio machine driver */
231 static struct snd_soc_card snd_soc_zoom2
= {
233 .platform
= &omap_soc_platform
,
234 .dai_link
= zoom2_dai
,
235 .num_links
= ARRAY_SIZE(zoom2_dai
),
238 /* EXTMUTE callback function */
239 void zoom2_set_hs_extmute(int mute
)
241 gpio_set_value(ZOOM2_HEADSET_EXTMUTE_GPIO
, mute
);
245 static struct twl4030_setup_data twl4030_setup
= {
246 .ramp_delay_value
= 3, /* 161 ms */
249 .set_hs_extmute
= zoom2_set_hs_extmute
,
252 /* Audio subsystem */
253 static struct snd_soc_device zoom2_snd_devdata
= {
254 .card
= &snd_soc_zoom2
,
255 .codec_dev
= &soc_codec_dev_twl4030
,
256 .codec_data
= &twl4030_setup
,
259 static struct platform_device
*zoom2_snd_device
;
261 static int __init
zoom2_soc_init(void)
265 if (!machine_is_omap_zoom2()) {
266 pr_debug("Not Zoom2!\n");
269 printk(KERN_INFO
"Zoom2 SoC init\n");
271 zoom2_snd_device
= platform_device_alloc("soc-audio", -1);
272 if (!zoom2_snd_device
) {
273 printk(KERN_ERR
"Platform device allocation failed\n");
277 platform_set_drvdata(zoom2_snd_device
, &zoom2_snd_devdata
);
278 zoom2_snd_devdata
.dev
= &zoom2_snd_device
->dev
;
279 *(unsigned int *)zoom2_dai
[0].cpu_dai
->private_data
= 1; /* McBSP2 */
280 *(unsigned int *)zoom2_dai
[1].cpu_dai
->private_data
= 2; /* McBSP3 */
282 ret
= platform_device_add(zoom2_snd_device
);
286 BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO
, "hs_mux") < 0);
287 gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO
, 0);
289 BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO
, "ext_mute") < 0);
290 gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO
, 0);
295 printk(KERN_ERR
"Unable to add platform device\n");
296 platform_device_put(zoom2_snd_device
);
300 module_init(zoom2_soc_init
);
302 static void __exit
zoom2_soc_exit(void)
304 gpio_free(ZOOM2_HEADSET_MUX_GPIO
);
305 gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO
);
307 platform_device_unregister(zoom2_snd_device
);
309 module_exit(zoom2_soc_exit
);
311 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
312 MODULE_DESCRIPTION("ALSA SoC Zoom2");
313 MODULE_LICENSE("GPL");