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 <mach/board-zoom.h>
33 #include <plat/mcbsp.h>
35 /* Register descriptions for twl4030 codec part */
36 #include <linux/mfd/twl4030-codec.h>
38 #include "omap-mcbsp.h"
41 #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
43 static int zoom2_hw_params(struct snd_pcm_substream
*substream
,
44 struct snd_pcm_hw_params
*params
)
46 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
47 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
48 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
51 /* Set codec DAI configuration */
52 ret
= snd_soc_dai_set_fmt(codec_dai
,
54 SND_SOC_DAIFMT_NB_NF
|
55 SND_SOC_DAIFMT_CBM_CFM
);
57 printk(KERN_ERR
"can't set codec DAI configuration\n");
61 /* Set cpu DAI configuration */
62 ret
= snd_soc_dai_set_fmt(cpu_dai
,
64 SND_SOC_DAIFMT_NB_NF
|
65 SND_SOC_DAIFMT_CBM_CFM
);
67 printk(KERN_ERR
"can't set cpu DAI configuration\n");
71 /* Set the codec system clock for DAC and ADC */
72 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
75 printk(KERN_ERR
"can't set codec system clock\n");
82 static struct snd_soc_ops zoom2_ops
= {
83 .hw_params
= zoom2_hw_params
,
86 static int zoom2_hw_voice_params(struct snd_pcm_substream
*substream
,
87 struct snd_pcm_hw_params
*params
)
89 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
90 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
91 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
94 /* Set codec DAI configuration */
95 ret
= snd_soc_dai_set_fmt(codec_dai
,
96 SND_SOC_DAIFMT_DSP_A
|
97 SND_SOC_DAIFMT_IB_NF
|
98 SND_SOC_DAIFMT_CBM_CFM
);
100 printk(KERN_ERR
"can't set codec DAI configuration\n");
104 /* Set cpu DAI configuration */
105 ret
= snd_soc_dai_set_fmt(cpu_dai
,
106 SND_SOC_DAIFMT_DSP_A
|
107 SND_SOC_DAIFMT_IB_NF
|
108 SND_SOC_DAIFMT_CBM_CFM
);
110 printk(KERN_ERR
"can't set cpu DAI configuration\n");
114 /* Set the codec system clock for DAC and ADC */
115 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
118 printk(KERN_ERR
"can't set codec system clock\n");
125 static struct snd_soc_ops zoom2_voice_ops
= {
126 .hw_params
= zoom2_hw_voice_params
,
129 /* Zoom2 machine DAPM */
130 static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets
[] = {
131 SND_SOC_DAPM_MIC("Ext Mic", NULL
),
132 SND_SOC_DAPM_SPK("Ext Spk", NULL
),
133 SND_SOC_DAPM_MIC("Headset Mic", NULL
),
134 SND_SOC_DAPM_HP("Headset Stereophone", NULL
),
135 SND_SOC_DAPM_LINE("Aux In", NULL
),
138 static const struct snd_soc_dapm_route audio_map
[] = {
139 /* External Mics: MAINMIC, SUBMIC with bias*/
140 {"MAINMIC", NULL
, "Mic Bias 1"},
141 {"SUBMIC", NULL
, "Mic Bias 2"},
142 {"Mic Bias 1", NULL
, "Ext Mic"},
143 {"Mic Bias 2", NULL
, "Ext Mic"},
145 /* External Speakers: HFL, HFR */
146 {"Ext Spk", NULL
, "HFL"},
147 {"Ext Spk", NULL
, "HFR"},
149 /* Headset Stereophone: HSOL, HSOR */
150 {"Headset Stereophone", NULL
, "HSOL"},
151 {"Headset Stereophone", NULL
, "HSOR"},
153 /* Headset Mic: HSMIC with bias */
154 {"HSMIC", NULL
, "Headset Mic Bias"},
155 {"Headset Mic Bias", NULL
, "Headset Mic"},
157 /* Aux In: AUXL, AUXR */
158 {"Aux In", NULL
, "AUXL"},
159 {"Aux In", NULL
, "AUXR"},
162 static int zoom2_twl4030_init(struct snd_soc_pcm_runtime
*rtd
)
164 struct snd_soc_codec
*codec
= rtd
->codec
;
167 /* Add Zoom2 specific widgets */
168 ret
= snd_soc_dapm_new_controls(codec
, zoom2_twl4030_dapm_widgets
,
169 ARRAY_SIZE(zoom2_twl4030_dapm_widgets
));
173 /* Set up Zoom2 specific audio path audio_map */
174 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
176 /* Zoom2 connected pins */
177 snd_soc_dapm_enable_pin(codec
, "Ext Mic");
178 snd_soc_dapm_enable_pin(codec
, "Ext Spk");
179 snd_soc_dapm_enable_pin(codec
, "Headset Mic");
180 snd_soc_dapm_enable_pin(codec
, "Headset Stereophone");
181 snd_soc_dapm_enable_pin(codec
, "Aux In");
183 /* TWL4030 not connected pins */
184 snd_soc_dapm_nc_pin(codec
, "CARKITMIC");
185 snd_soc_dapm_nc_pin(codec
, "DIGIMIC0");
186 snd_soc_dapm_nc_pin(codec
, "DIGIMIC1");
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_pcm_runtime
*rtd
)
200 struct snd_soc_codec
*codec
= rtd
->codec
;
203 /* Enable voice interface */
204 reg
= codec
->driver
->read(codec
, TWL4030_REG_VOICE_IF
);
205 reg
|= TWL4030_VIF_DIN_EN
| TWL4030_VIF_DOUT_EN
| TWL4030_VIF_EN
;
206 codec
->driver
->write(codec
, TWL4030_REG_VOICE_IF
, reg
);
211 /* Digital audio interface glue - connects codec <--> CPU */
212 static struct snd_soc_dai_link zoom2_dai
[] = {
214 .name
= "TWL4030 I2S",
215 .stream_name
= "TWL4030 Audio",
216 .cpu_dai_name
= "omap-mcbsp-dai.1",
217 .codec_dai_name
= "twl4030-hifi",
218 .platform_name
= "omap-pcm-audio",
219 .codec_name
= "twl4030-codec",
220 .init
= zoom2_twl4030_init
,
224 .name
= "TWL4030 PCM",
225 .stream_name
= "TWL4030 Voice",
226 .cpu_dai_name
= "omap-mcbsp-dai.2",
227 .codec_dai_name
= "twl4030-voice",
228 .platform_name
= "omap-pcm-audio",
229 .codec_name
= "twl4030-codec",
230 .init
= zoom2_twl4030_voice_init
,
231 .ops
= &zoom2_voice_ops
,
235 /* Audio machine driver */
236 static struct snd_soc_card snd_soc_zoom2
= {
238 .dai_link
= zoom2_dai
,
239 .num_links
= ARRAY_SIZE(zoom2_dai
),
242 static struct platform_device
*zoom2_snd_device
;
244 static int __init
zoom2_soc_init(void)
248 if (!machine_is_omap_zoom2()) {
249 pr_debug("Not Zoom2!\n");
252 printk(KERN_INFO
"Zoom2 SoC init\n");
254 zoom2_snd_device
= platform_device_alloc("soc-audio", -1);
255 if (!zoom2_snd_device
) {
256 printk(KERN_ERR
"Platform device allocation failed\n");
260 platform_set_drvdata(zoom2_snd_device
, &snd_soc_zoom2
);
261 ret
= platform_device_add(zoom2_snd_device
);
265 BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO
, "hs_mux") < 0);
266 gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO
, 0);
268 BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO
, "ext_mute") < 0);
269 gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO
, 0);
274 printk(KERN_ERR
"Unable to add platform device\n");
275 platform_device_put(zoom2_snd_device
);
279 module_init(zoom2_soc_init
);
281 static void __exit
zoom2_soc_exit(void)
283 gpio_free(ZOOM2_HEADSET_MUX_GPIO
);
284 gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO
);
286 platform_device_unregister(zoom2_snd_device
);
288 module_exit(zoom2_soc_exit
);
290 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
291 MODULE_DESCRIPTION("ALSA SoC Zoom2");
292 MODULE_LICENSE("GPL");