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>
28 #include <asm/mach-types.h>
29 #include <mach/hardware.h>
30 #include <mach/gpio.h>
31 #include <mach/board-zoom.h>
32 #include <plat/mcbsp.h>
34 /* Register descriptions for twl4030 codec part */
35 #include <linux/mfd/twl4030-audio.h>
37 #include "omap-mcbsp.h"
40 #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
42 static int zoom2_hw_params(struct snd_pcm_substream
*substream
,
43 struct snd_pcm_hw_params
*params
)
45 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
46 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
49 /* Set the codec system clock for DAC and ADC */
50 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, 26000000,
53 printk(KERN_ERR
"can't set codec system clock\n");
60 static struct snd_soc_ops zoom2_ops
= {
61 .hw_params
= zoom2_hw_params
,
64 /* Zoom2 machine DAPM */
65 static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets
[] = {
66 SND_SOC_DAPM_MIC("Ext Mic", NULL
),
67 SND_SOC_DAPM_SPK("Ext Spk", NULL
),
68 SND_SOC_DAPM_MIC("Headset Mic", NULL
),
69 SND_SOC_DAPM_HP("Headset Stereophone", NULL
),
70 SND_SOC_DAPM_LINE("Aux In", NULL
),
73 static const struct snd_soc_dapm_route audio_map
[] = {
74 /* External Mics: MAINMIC, SUBMIC with bias*/
75 {"MAINMIC", NULL
, "Mic Bias 1"},
76 {"SUBMIC", NULL
, "Mic Bias 2"},
77 {"Mic Bias 1", NULL
, "Ext Mic"},
78 {"Mic Bias 2", NULL
, "Ext Mic"},
80 /* External Speakers: HFL, HFR */
81 {"Ext Spk", NULL
, "HFL"},
82 {"Ext Spk", NULL
, "HFR"},
84 /* Headset Stereophone: HSOL, HSOR */
85 {"Headset Stereophone", NULL
, "HSOL"},
86 {"Headset Stereophone", NULL
, "HSOR"},
88 /* Headset Mic: HSMIC with bias */
89 {"HSMIC", NULL
, "Headset Mic Bias"},
90 {"Headset Mic Bias", NULL
, "Headset Mic"},
92 /* Aux In: AUXL, AUXR */
93 {"Aux In", NULL
, "AUXL"},
94 {"Aux In", NULL
, "AUXR"},
97 static int zoom2_twl4030_init(struct snd_soc_pcm_runtime
*rtd
)
99 struct snd_soc_codec
*codec
= rtd
->codec
;
100 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
102 /* TWL4030 not connected pins */
103 snd_soc_dapm_nc_pin(dapm
, "CARKITMIC");
104 snd_soc_dapm_nc_pin(dapm
, "DIGIMIC0");
105 snd_soc_dapm_nc_pin(dapm
, "DIGIMIC1");
106 snd_soc_dapm_nc_pin(dapm
, "EARPIECE");
107 snd_soc_dapm_nc_pin(dapm
, "PREDRIVEL");
108 snd_soc_dapm_nc_pin(dapm
, "PREDRIVER");
109 snd_soc_dapm_nc_pin(dapm
, "CARKITL");
110 snd_soc_dapm_nc_pin(dapm
, "CARKITR");
115 static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime
*rtd
)
117 struct snd_soc_codec
*codec
= rtd
->codec
;
120 /* Enable voice interface */
121 reg
= codec
->driver
->read(codec
, TWL4030_REG_VOICE_IF
);
122 reg
|= TWL4030_VIF_DIN_EN
| TWL4030_VIF_DOUT_EN
| TWL4030_VIF_EN
;
123 codec
->driver
->write(codec
, TWL4030_REG_VOICE_IF
, reg
);
128 /* Digital audio interface glue - connects codec <--> CPU */
129 static struct snd_soc_dai_link zoom2_dai
[] = {
131 .name
= "TWL4030 I2S",
132 .stream_name
= "TWL4030 Audio",
133 .cpu_dai_name
= "omap-mcbsp-dai.1",
134 .codec_dai_name
= "twl4030-hifi",
135 .platform_name
= "omap-pcm-audio",
136 .codec_name
= "twl4030-codec",
137 .dai_fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
138 SND_SOC_DAIFMT_CBM_CFM
,
139 .init
= zoom2_twl4030_init
,
143 .name
= "TWL4030 PCM",
144 .stream_name
= "TWL4030 Voice",
145 .cpu_dai_name
= "omap-mcbsp-dai.2",
146 .codec_dai_name
= "twl4030-voice",
147 .platform_name
= "omap-pcm-audio",
148 .codec_name
= "twl4030-codec",
149 .dai_fmt
= SND_SOC_DAIFMT_DSP_A
| SND_SOC_DAIFMT_IB_NF
|
150 SND_SOC_DAIFMT_CBM_CFM
,
151 .init
= zoom2_twl4030_voice_init
,
156 /* Audio machine driver */
157 static struct snd_soc_card snd_soc_zoom2
= {
159 .dai_link
= zoom2_dai
,
160 .num_links
= ARRAY_SIZE(zoom2_dai
),
162 .dapm_widgets
= zoom2_twl4030_dapm_widgets
,
163 .num_dapm_widgets
= ARRAY_SIZE(zoom2_twl4030_dapm_widgets
),
164 .dapm_routes
= audio_map
,
165 .num_dapm_routes
= ARRAY_SIZE(audio_map
),
168 static struct platform_device
*zoom2_snd_device
;
170 static int __init
zoom2_soc_init(void)
174 if (!machine_is_omap_zoom2())
176 printk(KERN_INFO
"Zoom2 SoC init\n");
178 zoom2_snd_device
= platform_device_alloc("soc-audio", -1);
179 if (!zoom2_snd_device
) {
180 printk(KERN_ERR
"Platform device allocation failed\n");
184 platform_set_drvdata(zoom2_snd_device
, &snd_soc_zoom2
);
185 ret
= platform_device_add(zoom2_snd_device
);
189 BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO
, "hs_mux") < 0);
190 gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO
, 0);
192 BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO
, "ext_mute") < 0);
193 gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO
, 0);
198 printk(KERN_ERR
"Unable to add platform device\n");
199 platform_device_put(zoom2_snd_device
);
203 module_init(zoom2_soc_init
);
205 static void __exit
zoom2_soc_exit(void)
207 gpio_free(ZOOM2_HEADSET_MUX_GPIO
);
208 gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO
);
210 platform_device_unregister(zoom2_snd_device
);
212 module_exit(zoom2_soc_exit
);
214 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
215 MODULE_DESCRIPTION("ALSA SoC Zoom2");
216 MODULE_LICENSE("GPL");