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17f9ecf3 AK |
1 | /* |
2 | * osk5912.c -- SoC audio for OSK 5912 | |
3 | * | |
4 | * Copyright (C) 2008 Mistral Solutions | |
5 | * | |
6 | * Contact: Arun KS <arunks@mistralsolutions.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/clk.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <sound/core.h> | |
27 | #include <sound/pcm.h> | |
28 | #include <sound/soc.h> | |
17f9ecf3 AK |
29 | |
30 | #include <asm/mach-types.h> | |
31 | #include <mach/hardware.h> | |
32 | #include <linux/gpio.h> | |
da155d5b | 33 | #include <linux/module.h> |
2203747c | 34 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
17f9ecf3 AK |
35 | |
36 | #include "omap-mcbsp.h" | |
37 | #include "omap-pcm.h" | |
38 | #include "../codecs/tlv320aic23.h" | |
39 | ||
40 | #define CODEC_CLOCK 12000000 | |
41 | ||
42 | static struct clk *tlv320aic23_mclk; | |
43 | ||
44 | static int osk_startup(struct snd_pcm_substream *substream) | |
45 | { | |
46 | return clk_enable(tlv320aic23_mclk); | |
47 | } | |
48 | ||
49 | static void osk_shutdown(struct snd_pcm_substream *substream) | |
50 | { | |
51 | clk_disable(tlv320aic23_mclk); | |
52 | } | |
53 | ||
54 | static int osk_hw_params(struct snd_pcm_substream *substream, | |
55 | struct snd_pcm_hw_params *params) | |
56 | { | |
57 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 58 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
17f9ecf3 AK |
59 | int err; |
60 | ||
17f9ecf3 AK |
61 | /* Set the codec system clock for DAC and ADC */ |
62 | err = | |
63 | snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); | |
64 | ||
65 | if (err < 0) { | |
66 | printk(KERN_ERR "can't set codec system clock\n"); | |
67 | return err; | |
68 | } | |
69 | ||
70 | return err; | |
71 | } | |
72 | ||
73 | static struct snd_soc_ops osk_ops = { | |
74 | .startup = osk_startup, | |
75 | .hw_params = osk_hw_params, | |
76 | .shutdown = osk_shutdown, | |
77 | }; | |
78 | ||
79 | static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { | |
80 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
81 | SND_SOC_DAPM_LINE("Line In", NULL), | |
82 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
83 | }; | |
84 | ||
85 | static const struct snd_soc_dapm_route audio_map[] = { | |
86 | {"Headphone Jack", NULL, "LHPOUT"}, | |
87 | {"Headphone Jack", NULL, "RHPOUT"}, | |
88 | ||
89 | {"LLINEIN", NULL, "Line In"}, | |
90 | {"RLINEIN", NULL, "Line In"}, | |
91 | ||
92 | {"MICIN", NULL, "Mic Jack"}, | |
93 | }; | |
94 | ||
17f9ecf3 AK |
95 | /* Digital audio interface glue - connects codec <--> CPU */ |
96 | static struct snd_soc_dai_link osk_dai = { | |
97 | .name = "TLV320AIC23", | |
98 | .stream_name = "AIC23", | |
45656b44 | 99 | .cpu_dai_name = "omap-mcbsp.1", |
f0fba2ad LG |
100 | .codec_dai_name = "tlv320aic23-hifi", |
101 | .platform_name = "omap-pcm-audio", | |
102 | .codec_name = "tlv320aic23-codec", | |
cf9feff2 JN |
103 | .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | |
104 | SND_SOC_DAIFMT_CBM_CFM, | |
17f9ecf3 AK |
105 | .ops = &osk_ops, |
106 | }; | |
107 | ||
108 | /* Audio machine driver */ | |
87506549 | 109 | static struct snd_soc_card snd_soc_card_osk = { |
17f9ecf3 | 110 | .name = "OSK5912", |
b425b884 | 111 | .owner = THIS_MODULE, |
17f9ecf3 AK |
112 | .dai_link = &osk_dai, |
113 | .num_links = 1, | |
93b4d790 PU |
114 | |
115 | .dapm_widgets = tlv320aic23_dapm_widgets, | |
116 | .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), | |
117 | .dapm_routes = audio_map, | |
118 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
17f9ecf3 AK |
119 | }; |
120 | ||
17f9ecf3 AK |
121 | static struct platform_device *osk_snd_device; |
122 | ||
123 | static int __init osk_soc_init(void) | |
124 | { | |
125 | int err; | |
126 | u32 curRate; | |
127 | struct device *dev; | |
128 | ||
129 | if (!(machine_is_omap_osk())) | |
130 | return -ENODEV; | |
131 | ||
132 | osk_snd_device = platform_device_alloc("soc-audio", -1); | |
133 | if (!osk_snd_device) | |
134 | return -ENOMEM; | |
135 | ||
f0fba2ad | 136 | platform_set_drvdata(osk_snd_device, &snd_soc_card_osk); |
17f9ecf3 AK |
137 | err = platform_device_add(osk_snd_device); |
138 | if (err) | |
139 | goto err1; | |
140 | ||
141 | dev = &osk_snd_device->dev; | |
142 | ||
143 | tlv320aic23_mclk = clk_get(dev, "mclk"); | |
144 | if (IS_ERR(tlv320aic23_mclk)) { | |
145 | printk(KERN_ERR "Could not get mclk clock\n"); | |
25436180 AL |
146 | err = PTR_ERR(tlv320aic23_mclk); |
147 | goto err2; | |
17f9ecf3 AK |
148 | } |
149 | ||
17f9ecf3 AK |
150 | /* |
151 | * Configure 12 MHz output on MCLK. | |
152 | */ | |
153 | curRate = (uint) clk_get_rate(tlv320aic23_mclk); | |
154 | if (curRate != CODEC_CLOCK) { | |
155 | if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) { | |
156 | printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n"); | |
157 | err = -ECANCELED; | |
25436180 | 158 | goto err3; |
17f9ecf3 AK |
159 | } |
160 | } | |
161 | ||
5706d501 DB |
162 | printk(KERN_INFO "MCLK = %d [%d]\n", |
163 | (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK); | |
17f9ecf3 AK |
164 | |
165 | return 0; | |
25436180 AL |
166 | |
167 | err3: | |
17f9ecf3 | 168 | clk_put(tlv320aic23_mclk); |
25436180 | 169 | err2: |
17f9ecf3 | 170 | platform_device_del(osk_snd_device); |
25436180 | 171 | err1: |
17f9ecf3 AK |
172 | platform_device_put(osk_snd_device); |
173 | ||
174 | return err; | |
175 | ||
176 | } | |
177 | ||
178 | static void __exit osk_soc_exit(void) | |
179 | { | |
25436180 | 180 | clk_put(tlv320aic23_mclk); |
17f9ecf3 AK |
181 | platform_device_unregister(osk_snd_device); |
182 | } | |
183 | ||
184 | module_init(osk_soc_init); | |
185 | module_exit(osk_soc_exit); | |
186 | ||
187 | MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); | |
188 | MODULE_DESCRIPTION("ALSA SoC OSK 5912"); | |
189 | MODULE_LICENSE("GPL"); |