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310355c1 VB |
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 | ||
32 | static 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; | |
9cb132d7 LG |
36 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; |
37 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
310355c1 VB |
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 | ||
61 | static struct snd_soc_ops evm_ops = { | |
62 | .hw_params = evm_hw_params, | |
63 | }; | |
64 | ||
65 | /* davinci-evm machine dapm widgets */ | |
66 | static 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 */ | |
acf497f9 | 74 | static const struct snd_soc_dapm_route audio_map[] = { |
310355c1 VB |
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"}, | |
310355c1 VB |
93 | }; |
94 | ||
95 | /* Logic for a aic3x as connected on a davinci-evm */ | |
96 | static int evm_aic3x_init(struct snd_soc_codec *codec) | |
97 | { | |
310355c1 | 98 | /* Add davinci-evm specific widgets */ |
acf497f9 MB |
99 | snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets, |
100 | ARRAY_SIZE(aic3x_dapm_widgets)); | |
310355c1 VB |
101 | |
102 | /* Set up davinci-evm specific audio path audio_map */ | |
acf497f9 | 103 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
310355c1 VB |
104 | |
105 | /* not connected */ | |
a5302181 LG |
106 | snd_soc_dapm_disable_pin(codec, "MONO_LOUT"); |
107 | snd_soc_dapm_disable_pin(codec, "HPLCOM"); | |
108 | snd_soc_dapm_disable_pin(codec, "HPRCOM"); | |
310355c1 VB |
109 | |
110 | /* always connected */ | |
a5302181 LG |
111 | snd_soc_dapm_enable_pin(codec, "Headphone Jack"); |
112 | snd_soc_dapm_enable_pin(codec, "Line Out"); | |
113 | snd_soc_dapm_enable_pin(codec, "Mic Jack"); | |
114 | snd_soc_dapm_enable_pin(codec, "Line In"); | |
310355c1 | 115 | |
a5302181 | 116 | snd_soc_dapm_sync(codec); |
310355c1 VB |
117 | |
118 | return 0; | |
119 | } | |
120 | ||
121 | /* davinci-evm digital audio interface glue - connects codec <--> CPU */ | |
122 | static struct snd_soc_dai_link evm_dai = { | |
123 | .name = "TLV320AIC3X", | |
124 | .stream_name = "AIC3X", | |
125 | .cpu_dai = &davinci_i2s_dai, | |
126 | .codec_dai = &aic3x_dai, | |
127 | .init = evm_aic3x_init, | |
128 | .ops = &evm_ops, | |
129 | }; | |
130 | ||
131 | /* davinci-evm audio machine driver */ | |
132 | static struct snd_soc_machine snd_soc_machine_evm = { | |
133 | .name = "DaVinci EVM", | |
134 | .dai_link = &evm_dai, | |
135 | .num_links = 1, | |
136 | }; | |
137 | ||
138 | /* evm audio private data */ | |
139 | static struct aic3x_setup_data evm_aic3x_setup = { | |
140 | .i2c_address = 0x1b, | |
141 | }; | |
142 | ||
143 | /* evm audio subsystem */ | |
144 | static struct snd_soc_device evm_snd_devdata = { | |
145 | .machine = &snd_soc_machine_evm, | |
146 | .platform = &davinci_soc_platform, | |
147 | .codec_dev = &soc_codec_dev_aic3x, | |
148 | .codec_data = &evm_aic3x_setup, | |
149 | }; | |
150 | ||
151 | static struct resource evm_snd_resources[] = { | |
152 | { | |
153 | .start = DAVINCI_MCBSP_BASE, | |
154 | .end = DAVINCI_MCBSP_BASE + SZ_8K - 1, | |
155 | .flags = IORESOURCE_MEM, | |
156 | }, | |
157 | }; | |
158 | ||
159 | static struct evm_snd_platform_data evm_snd_data = { | |
160 | .tx_dma_ch = DM644X_DMACH_MCBSP_TX, | |
161 | .rx_dma_ch = DM644X_DMACH_MCBSP_RX, | |
162 | }; | |
163 | ||
164 | static struct platform_device *evm_snd_device; | |
165 | ||
166 | static int __init evm_init(void) | |
167 | { | |
168 | int ret; | |
169 | ||
170 | evm_snd_device = platform_device_alloc("soc-audio", 0); | |
171 | if (!evm_snd_device) | |
172 | return -ENOMEM; | |
173 | ||
174 | platform_set_drvdata(evm_snd_device, &evm_snd_devdata); | |
175 | evm_snd_devdata.dev = &evm_snd_device->dev; | |
176 | evm_snd_device->dev.platform_data = &evm_snd_data; | |
177 | ||
178 | ret = platform_device_add_resources(evm_snd_device, evm_snd_resources, | |
179 | ARRAY_SIZE(evm_snd_resources)); | |
180 | if (ret) { | |
181 | platform_device_put(evm_snd_device); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | ret = platform_device_add(evm_snd_device); | |
186 | if (ret) | |
187 | platform_device_put(evm_snd_device); | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
192 | static void __exit evm_exit(void) | |
193 | { | |
194 | platform_device_unregister(evm_snd_device); | |
195 | } | |
196 | ||
197 | module_init(evm_init); | |
198 | module_exit(evm_exit); | |
199 | ||
200 | MODULE_AUTHOR("Vladimir Barinov"); | |
201 | MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver"); | |
202 | MODULE_LICENSE("GPL"); |