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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> | |
17f9ecf3 | 31 | #include <linux/gpio.h> |
da155d5b | 32 | #include <linux/module.h> |
2203747c | 33 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
17f9ecf3 AK |
34 | |
35 | #include "omap-mcbsp.h" | |
36 | #include "omap-pcm.h" | |
37 | #include "../codecs/tlv320aic23.h" | |
38 | ||
39 | #define CODEC_CLOCK 12000000 | |
40 | ||
41 | static struct clk *tlv320aic23_mclk; | |
42 | ||
43 | static int osk_startup(struct snd_pcm_substream *substream) | |
44 | { | |
45 | return clk_enable(tlv320aic23_mclk); | |
46 | } | |
47 | ||
48 | static void osk_shutdown(struct snd_pcm_substream *substream) | |
49 | { | |
50 | clk_disable(tlv320aic23_mclk); | |
51 | } | |
52 | ||
53 | static int osk_hw_params(struct snd_pcm_substream *substream, | |
54 | struct snd_pcm_hw_params *params) | |
55 | { | |
56 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 57 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
17f9ecf3 AK |
58 | int err; |
59 | ||
17f9ecf3 AK |
60 | /* Set the codec system clock for DAC and ADC */ |
61 | err = | |
62 | snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); | |
63 | ||
64 | if (err < 0) { | |
65 | printk(KERN_ERR "can't set codec system clock\n"); | |
66 | return err; | |
67 | } | |
68 | ||
69 | return err; | |
70 | } | |
71 | ||
72 | static struct snd_soc_ops osk_ops = { | |
73 | .startup = osk_startup, | |
74 | .hw_params = osk_hw_params, | |
75 | .shutdown = osk_shutdown, | |
76 | }; | |
77 | ||
78 | static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { | |
79 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
80 | SND_SOC_DAPM_LINE("Line In", NULL), | |
81 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
82 | }; | |
83 | ||
84 | static const struct snd_soc_dapm_route audio_map[] = { | |
85 | {"Headphone Jack", NULL, "LHPOUT"}, | |
86 | {"Headphone Jack", NULL, "RHPOUT"}, | |
87 | ||
88 | {"LLINEIN", NULL, "Line In"}, | |
89 | {"RLINEIN", NULL, "Line In"}, | |
90 | ||
91 | {"MICIN", NULL, "Mic Jack"}, | |
92 | }; | |
93 | ||
17f9ecf3 AK |
94 | /* Digital audio interface glue - connects codec <--> CPU */ |
95 | static struct snd_soc_dai_link osk_dai = { | |
96 | .name = "TLV320AIC23", | |
97 | .stream_name = "AIC23", | |
45656b44 | 98 | .cpu_dai_name = "omap-mcbsp.1", |
f0fba2ad LG |
99 | .codec_dai_name = "tlv320aic23-hifi", |
100 | .platform_name = "omap-pcm-audio", | |
101 | .codec_name = "tlv320aic23-codec", | |
cf9feff2 JN |
102 | .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | |
103 | SND_SOC_DAIFMT_CBM_CFM, | |
17f9ecf3 AK |
104 | .ops = &osk_ops, |
105 | }; | |
106 | ||
107 | /* Audio machine driver */ | |
87506549 | 108 | static struct snd_soc_card snd_soc_card_osk = { |
17f9ecf3 | 109 | .name = "OSK5912", |
b425b884 | 110 | .owner = THIS_MODULE, |
17f9ecf3 AK |
111 | .dai_link = &osk_dai, |
112 | .num_links = 1, | |
93b4d790 PU |
113 | |
114 | .dapm_widgets = tlv320aic23_dapm_widgets, | |
115 | .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), | |
116 | .dapm_routes = audio_map, | |
117 | .num_dapm_routes = ARRAY_SIZE(audio_map), | |
17f9ecf3 AK |
118 | }; |
119 | ||
17f9ecf3 AK |
120 | static struct platform_device *osk_snd_device; |
121 | ||
122 | static int __init osk_soc_init(void) | |
123 | { | |
124 | int err; | |
125 | u32 curRate; | |
126 | struct device *dev; | |
127 | ||
128 | if (!(machine_is_omap_osk())) | |
129 | return -ENODEV; | |
130 | ||
131 | osk_snd_device = platform_device_alloc("soc-audio", -1); | |
132 | if (!osk_snd_device) | |
133 | return -ENOMEM; | |
134 | ||
f0fba2ad | 135 | platform_set_drvdata(osk_snd_device, &snd_soc_card_osk); |
17f9ecf3 AK |
136 | err = platform_device_add(osk_snd_device); |
137 | if (err) | |
138 | goto err1; | |
139 | ||
140 | dev = &osk_snd_device->dev; | |
141 | ||
142 | tlv320aic23_mclk = clk_get(dev, "mclk"); | |
143 | if (IS_ERR(tlv320aic23_mclk)) { | |
144 | printk(KERN_ERR "Could not get mclk clock\n"); | |
25436180 AL |
145 | err = PTR_ERR(tlv320aic23_mclk); |
146 | goto err2; | |
17f9ecf3 AK |
147 | } |
148 | ||
17f9ecf3 AK |
149 | /* |
150 | * Configure 12 MHz output on MCLK. | |
151 | */ | |
152 | curRate = (uint) clk_get_rate(tlv320aic23_mclk); | |
153 | if (curRate != CODEC_CLOCK) { | |
154 | if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) { | |
155 | printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n"); | |
156 | err = -ECANCELED; | |
25436180 | 157 | goto err3; |
17f9ecf3 AK |
158 | } |
159 | } | |
160 | ||
5706d501 DB |
161 | printk(KERN_INFO "MCLK = %d [%d]\n", |
162 | (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK); | |
17f9ecf3 AK |
163 | |
164 | return 0; | |
25436180 AL |
165 | |
166 | err3: | |
17f9ecf3 | 167 | clk_put(tlv320aic23_mclk); |
25436180 | 168 | err2: |
17f9ecf3 | 169 | platform_device_del(osk_snd_device); |
25436180 | 170 | err1: |
17f9ecf3 AK |
171 | platform_device_put(osk_snd_device); |
172 | ||
173 | return err; | |
174 | ||
175 | } | |
176 | ||
177 | static void __exit osk_soc_exit(void) | |
178 | { | |
25436180 | 179 | clk_put(tlv320aic23_mclk); |
17f9ecf3 AK |
180 | platform_device_unregister(osk_snd_device); |
181 | } | |
182 | ||
183 | module_init(osk_soc_init); | |
184 | module_exit(osk_soc_exit); | |
185 | ||
186 | MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); | |
187 | MODULE_DESCRIPTION("ALSA SoC OSK 5912"); | |
188 | MODULE_LICENSE("GPL"); |