2 * afeb9260.c -- SoC audio for AFEB9260
4 * Copyright (C) 2009 Sergey Lapin <slapin@ossfans.org>
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/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/kernel.h>
25 #include <linux/clk.h>
26 #include <linux/platform_device.h>
28 #include <linux/atmel-ssc.h>
29 #include <sound/core.h>
30 #include <sound/pcm.h>
31 #include <sound/pcm_params.h>
32 #include <sound/soc.h>
33 #include <sound/soc-dapm.h>
35 #include <asm/mach-types.h>
36 #include <mach/hardware.h>
37 #include <linux/gpio.h>
39 #include "../codecs/tlv320aic23.h"
40 #include "atmel-pcm.h"
41 #include "atmel_ssc_dai.h"
43 #define CODEC_CLOCK 12000000
45 static int afeb9260_hw_params(struct snd_pcm_substream *substream,
46 struct snd_pcm_hw_params *params)
48 struct snd_soc_pcm_runtime *rtd = substream->private_data;
49 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
50 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
53 /* Set codec DAI configuration */
54 err = snd_soc_dai_set_fmt(codec_dai,
56 SND_SOC_DAIFMT_NB_IF |
57 SND_SOC_DAIFMT_CBM_CFM);
59 printk(KERN_ERR "can't set codec DAI configuration\n");
63 /* Set cpu DAI configuration */
64 err = snd_soc_dai_set_fmt(cpu_dai,
66 SND_SOC_DAIFMT_NB_IF |
67 SND_SOC_DAIFMT_CBM_CFM);
69 printk(KERN_ERR "can't set cpu DAI configuration\n");
73 /* Set the codec system clock for DAC and ADC */
75 snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
78 printk(KERN_ERR "can't set codec system clock\n");
85 static struct snd_soc_ops afeb9260_ops = {
86 .hw_params = afeb9260_hw_params,
89 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
90 SND_SOC_DAPM_HP("Headphone Jack", NULL),
91 SND_SOC_DAPM_LINE("Line In", NULL),
92 SND_SOC_DAPM_MIC("Mic Jack", NULL),
95 static const struct snd_soc_dapm_route audio_map[] = {
96 {"Headphone Jack", NULL, "LHPOUT"},
97 {"Headphone Jack", NULL, "RHPOUT"},
99 {"LLINEIN", NULL, "Line In"},
100 {"RLINEIN", NULL, "Line In"},
102 {"MICIN", NULL, "Mic Jack"},
105 static int afeb9260_tlv320aic23_init(struct snd_soc_codec *codec)
108 /* Add afeb9260 specific widgets */
109 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
110 ARRAY_SIZE(tlv320aic23_dapm_widgets));
112 /* Set up afeb9260 specific audio path audio_map */
113 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
115 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
116 snd_soc_dapm_enable_pin(codec, "Line In");
117 snd_soc_dapm_enable_pin(codec, "Mic Jack");
119 snd_soc_dapm_sync(codec);
124 /* Digital audio interface glue - connects codec <--> CPU */
125 static struct snd_soc_dai_link afeb9260_dai = {
126 .name = "TLV320AIC23",
127 .stream_name = "AIC23",
128 .cpu_dai = &atmel_ssc_dai[0],
129 .codec_dai = &tlv320aic23_dai,
130 .init = afeb9260_tlv320aic23_init,
131 .ops = &afeb9260_ops,
134 /* Audio machine driver */
135 static struct snd_soc_card snd_soc_machine_afeb9260 = {
137 .platform = &atmel_soc_platform,
138 .dai_link = &afeb9260_dai,
142 /* Audio subsystem */
143 static struct snd_soc_device afeb9260_snd_devdata = {
144 .card = &snd_soc_machine_afeb9260,
145 .codec_dev = &soc_codec_dev_tlv320aic23,
148 static struct platform_device *afeb9260_snd_device;
150 static int __init afeb9260_soc_init(void)
154 struct atmel_ssc_info *ssc_p = afeb9260_dai.cpu_dai->private_data;
155 struct ssc_device *ssc = NULL;
157 if (!(machine_is_afeb9260()))
160 ssc = ssc_request(0);
162 printk(KERN_ERR "ASoC: Failed to request SSC 0\n");
169 afeb9260_snd_device = platform_device_alloc("soc-audio", -1);
170 if (!afeb9260_snd_device) {
171 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
175 platform_set_drvdata(afeb9260_snd_device, &afeb9260_snd_devdata);
176 afeb9260_snd_devdata.dev = &afeb9260_snd_device->dev;
177 err = platform_device_add(afeb9260_snd_device);
181 dev = &afeb9260_snd_device->dev;
185 platform_device_del(afeb9260_snd_device);
186 platform_device_put(afeb9260_snd_device);
192 static void __exit afeb9260_soc_exit(void)
194 platform_device_unregister(afeb9260_snd_device);
197 module_init(afeb9260_soc_init);
198 module_exit(afeb9260_soc_exit);
200 MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
201 MODULE_DESCRIPTION("ALSA SoC for AFEB9260");
202 MODULE_LICENSE("GPL");