1 /*
2 * afeb9260.c -- SoC audio for AFEB9260
3 *
4 * Copyright (C) 2009 Sergey Lapin <slapin@ossfans.org>
5 *
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.
9 *
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.
14 *
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
18 * 02110-1301 USA
19 *
20 */
21
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>
27
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
34 #include <asm/mach-types.h>
35 #include <mach/hardware.h>
36 #include <linux/gpio.h>
37
38 #include "../codecs/tlv320aic23.h"
39 #include "atmel-pcm.h"
40 #include "atmel_ssc_dai.h"
41
42 #define CODEC_CLOCK 12000000
43
afeb9260_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)44 static int afeb9260_hw_params(struct snd_pcm_substream *substream,
45 struct snd_pcm_hw_params *params)
46 {
47 struct snd_soc_pcm_runtime *rtd = substream->private_data;
48 struct snd_soc_dai *codec_dai = rtd->codec_dai;
49 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
50 int err;
51
52 /* Set codec DAI configuration */
53 err = snd_soc_dai_set_fmt(codec_dai,
54 SND_SOC_DAIFMT_I2S|
55 SND_SOC_DAIFMT_NB_IF |
56 SND_SOC_DAIFMT_CBM_CFM);
57 if (err < 0) {
58 printk(KERN_ERR "can't set codec DAI configuration\n");
59 return err;
60 }
61
62 /* Set cpu DAI configuration */
63 err = snd_soc_dai_set_fmt(cpu_dai,
64 SND_SOC_DAIFMT_I2S |
65 SND_SOC_DAIFMT_NB_IF |
66 SND_SOC_DAIFMT_CBM_CFM);
67 if (err < 0) {
68 printk(KERN_ERR "can't set cpu DAI configuration\n");
69 return err;
70 }
71
72 /* Set the codec system clock for DAC and ADC */
73 err =
74 snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
75
76 if (err < 0) {
77 printk(KERN_ERR "can't set codec system clock\n");
78 return err;
79 }
80
81 return err;
82 }
83
84 static struct snd_soc_ops afeb9260_ops = {
85 .hw_params = afeb9260_hw_params,
86 };
87
88 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
89 SND_SOC_DAPM_HP("Headphone Jack", NULL),
90 SND_SOC_DAPM_LINE("Line In", NULL),
91 SND_SOC_DAPM_MIC("Mic Jack", NULL),
92 };
93
94 static const struct snd_soc_dapm_route audio_map[] = {
95 {"Headphone Jack", NULL, "LHPOUT"},
96 {"Headphone Jack", NULL, "RHPOUT"},
97
98 {"LLINEIN", NULL, "Line In"},
99 {"RLINEIN", NULL, "Line In"},
100
101 {"MICIN", NULL, "Mic Jack"},
102 };
103
afeb9260_tlv320aic23_init(struct snd_soc_pcm_runtime * rtd)104 static int afeb9260_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
105 {
106 struct snd_soc_codec *codec = rtd->codec;
107 struct snd_soc_dapm_context *dapm = &codec->dapm;
108
109 /* Add afeb9260 specific widgets */
110 snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
111 ARRAY_SIZE(tlv320aic23_dapm_widgets));
112
113 /* Set up afeb9260 specific audio path audio_map */
114 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
115
116 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
117 snd_soc_dapm_enable_pin(dapm, "Line In");
118 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
119
120 snd_soc_dapm_sync(dapm);
121
122 return 0;
123 }
124
125 /* Digital audio interface glue - connects codec <--> CPU */
126 static struct snd_soc_dai_link afeb9260_dai = {
127 .name = "TLV320AIC23",
128 .stream_name = "AIC23",
129 .cpu_dai_name = "atmel-ssc-dai.0",
130 .codec_dai_name = "tlv320aic23-hifi",
131 .platform_name = "atmel_pcm-audio",
132 .codec_name = "tlv320aic23-codec.0-001a",
133 .init = afeb9260_tlv320aic23_init,
134 .ops = &afeb9260_ops,
135 };
136
137 /* Audio machine driver */
138 static struct snd_soc_card snd_soc_machine_afeb9260 = {
139 .name = "AFEB9260",
140 .dai_link = &afeb9260_dai,
141 .num_links = 1,
142 };
143
144 static struct platform_device *afeb9260_snd_device;
145
afeb9260_soc_init(void)146 static int __init afeb9260_soc_init(void)
147 {
148 int err;
149 struct device *dev;
150
151 if (!(machine_is_afeb9260()))
152 return -ENODEV;
153
154
155 afeb9260_snd_device = platform_device_alloc("soc-audio", -1);
156 if (!afeb9260_snd_device) {
157 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
158 return -ENOMEM;
159 }
160
161 platform_set_drvdata(afeb9260_snd_device, &snd_soc_machine_afeb9260);
162 err = platform_device_add(afeb9260_snd_device);
163 if (err)
164 goto err1;
165
166 dev = &afeb9260_snd_device->dev;
167
168 return 0;
169 err1:
170 platform_device_put(afeb9260_snd_device);
171 return err;
172 }
173
afeb9260_soc_exit(void)174 static void __exit afeb9260_soc_exit(void)
175 {
176 platform_device_unregister(afeb9260_snd_device);
177 }
178
179 module_init(afeb9260_soc_init);
180 module_exit(afeb9260_soc_exit);
181
182 MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
183 MODULE_DESCRIPTION("ALSA SoC for AFEB9260");
184 MODULE_LICENSE("GPL");
185
186