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authorVladimir Barinov <vbarinov@ru.mvista.com>2008-02-18 05:40:22 -0500
committerTakashi Iwai <tiwai@suse.de>2008-04-24 06:00:11 -0400
commit310355c111dbae005269fe3fc39afdd60779bf5d (patch)
treefc792358843354483f86ef6695c5fe83db91a9da /sound/soc/davinci/davinci-evm.c
parentb40b04ad380ad641e5740486e4b9a56fd32b64cc (diff)
[ALSA] Davinci ASoC support
Add ASoC support for the TI Davinci SoC and the Davicni-EVM reference board. It includes: - ASoC Davinci DMA driver - ASoC Davinci I2S (Davinci McBSP module based) driver - ASoC Davinci-EVM reference board Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/soc/davinci/davinci-evm.c')
-rw-r--r--sound/soc/davinci/davinci-evm.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
new file mode 100644
index 000000000000..fcd165240333
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+++ b/sound/soc/davinci/davinci-evm.c
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1/*
2 * ASoC driver for TI DAVINCI EVM platform
3 *
4 * Author: Vladimir Barinov, <vbarinov@ru.mvista.com>
5 * Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/timer.h>
15#include <linux/interrupt.h>
16#include <linux/platform_device.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/soc.h>
20#include <sound/soc-dapm.h>
21
22#include <asm/mach-types.h>
23#include <asm/dma.h>
24#include <asm/arch/hardware.h>
25
26#include "../codecs/tlv320aic3x.h"
27#include "davinci-pcm.h"
28#include "davinci-i2s.h"
29
30#define EVM_CODEC_CLOCK 22579200
31
32static int evm_hw_params(struct snd_pcm_substream *substream,
33 struct snd_pcm_hw_params *params)
34{
35 struct snd_soc_pcm_runtime *rtd = substream->private_data;
36 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
37 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
38 int ret = 0;
39
40 /* set codec DAI configuration */
41 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
42 SND_SOC_DAIFMT_CBM_CFM);
43 if (ret < 0)
44 return ret;
45
46 /* set cpu DAI configuration */
47 ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
48 SND_SOC_DAIFMT_IB_NF);
49 if (ret < 0)
50 return ret;
51
52 /* set the codec system clock */
53 ret = codec_dai->dai_ops.set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
54 SND_SOC_CLOCK_OUT);
55 if (ret < 0)
56 return ret;
57
58 return 0;
59}
60
61static struct snd_soc_ops evm_ops = {
62 .hw_params = evm_hw_params,
63};
64
65/* davinci-evm machine dapm widgets */
66static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
67 SND_SOC_DAPM_HP("Headphone Jack", NULL),
68 SND_SOC_DAPM_LINE("Line Out", NULL),
69 SND_SOC_DAPM_MIC("Mic Jack", NULL),
70 SND_SOC_DAPM_LINE("Line In", NULL),
71};
72
73/* davinci-evm machine audio_mapnections to the codec pins */
74static const char *audio_map[][3] = {
75 /* Headphone connected to HPLOUT, HPROUT */
76 {"Headphone Jack", NULL, "HPLOUT"},
77 {"Headphone Jack", NULL, "HPROUT"},
78
79 /* Line Out connected to LLOUT, RLOUT */
80 {"Line Out", NULL, "LLOUT"},
81 {"Line Out", NULL, "RLOUT"},
82
83 /* Mic connected to (MIC3L | MIC3R) */
84 {"MIC3L", NULL, "Mic Bias 2V"},
85 {"MIC3R", NULL, "Mic Bias 2V"},
86 {"Mic Bias 2V", NULL, "Mic Jack"},
87
88 /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
89 {"LINE1L", NULL, "Line In"},
90 {"LINE2L", NULL, "Line In"},
91 {"LINE1R", NULL, "Line In"},
92 {"LINE2R", NULL, "Line In"},
93
94 {NULL, NULL, NULL},
95};
96
97/* Logic for a aic3x as connected on a davinci-evm */
98static int evm_aic3x_init(struct snd_soc_codec *codec)
99{
100 int i;
101
102 /* Add davinci-evm specific widgets */
103 for (i = 0; i < ARRAY_SIZE(aic3x_dapm_widgets); i++)
104 snd_soc_dapm_new_control(codec, &aic3x_dapm_widgets[i]);
105
106 /* Set up davinci-evm specific audio path audio_map */
107 for (i = 0; audio_map[i][0] != NULL; i++)
108 snd_soc_dapm_connect_input(codec, audio_map[i][0],
109 audio_map[i][1], audio_map[i][2]);
110
111 /* not connected */
112 snd_soc_dapm_set_endpoint(codec, "MONO_LOUT", 0);
113 snd_soc_dapm_set_endpoint(codec, "HPLCOM", 0);
114 snd_soc_dapm_set_endpoint(codec, "HPRCOM", 0);
115
116 /* always connected */
117 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
118 snd_soc_dapm_set_endpoint(codec, "Line Out", 1);
119 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
120 snd_soc_dapm_set_endpoint(codec, "Line In", 1);
121
122 snd_soc_dapm_sync_endpoints(codec);
123
124 return 0;
125}
126
127/* davinci-evm digital audio interface glue - connects codec <--> CPU */
128static struct snd_soc_dai_link evm_dai = {
129 .name = "TLV320AIC3X",
130 .stream_name = "AIC3X",
131 .cpu_dai = &davinci_i2s_dai,
132 .codec_dai = &aic3x_dai,
133 .init = evm_aic3x_init,
134 .ops = &evm_ops,
135};
136
137/* davinci-evm audio machine driver */
138static struct snd_soc_machine snd_soc_machine_evm = {
139 .name = "DaVinci EVM",
140 .dai_link = &evm_dai,
141 .num_links = 1,
142};
143
144/* evm audio private data */
145static struct aic3x_setup_data evm_aic3x_setup = {
146 .i2c_address = 0x1b,
147};
148
149/* evm audio subsystem */
150static struct snd_soc_device evm_snd_devdata = {
151 .machine = &snd_soc_machine_evm,
152 .platform = &davinci_soc_platform,
153 .codec_dev = &soc_codec_dev_aic3x,
154 .codec_data = &evm_aic3x_setup,
155};
156
157static struct resource evm_snd_resources[] = {
158 {
159 .start = DAVINCI_MCBSP_BASE,
160 .end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
161 .flags = IORESOURCE_MEM,
162 },
163};
164
165static struct evm_snd_platform_data evm_snd_data = {
166 .tx_dma_ch = DM644X_DMACH_MCBSP_TX,
167 .rx_dma_ch = DM644X_DMACH_MCBSP_RX,
168};
169
170static struct platform_device *evm_snd_device;
171
172static int __init evm_init(void)
173{
174 int ret;
175
176 evm_snd_device = platform_device_alloc("soc-audio", 0);
177 if (!evm_snd_device)
178 return -ENOMEM;
179
180 platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
181 evm_snd_devdata.dev = &evm_snd_device->dev;
182 evm_snd_device->dev.platform_data = &evm_snd_data;
183
184 ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
185 ARRAY_SIZE(evm_snd_resources));
186 if (ret) {
187 platform_device_put(evm_snd_device);
188 return ret;
189 }
190
191 ret = platform_device_add(evm_snd_device);
192 if (ret)
193 platform_device_put(evm_snd_device);
194
195 return ret;
196}
197
198static void __exit evm_exit(void)
199{
200 platform_device_unregister(evm_snd_device);
201}
202
203module_init(evm_init);
204module_exit(evm_exit);
205
206MODULE_AUTHOR("Vladimir Barinov");
207MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
208MODULE_LICENSE("GPL");