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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> | |
29 | #include <sound/soc-dapm.h> | |
30 | ||
31 | #include <asm/mach-types.h> | |
32 | #include <mach/hardware.h> | |
33 | #include <linux/gpio.h> | |
34 | #include <mach/mcbsp.h> | |
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; | |
58 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
59 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
60 | int err; | |
61 | ||
62 | /* Set codec DAI configuration */ | |
63 | err = snd_soc_dai_set_fmt(codec_dai, | |
bd25867a | 64 | SND_SOC_DAIFMT_DSP_B | |
17f9ecf3 AK |
65 | SND_SOC_DAIFMT_NB_IF | |
66 | SND_SOC_DAIFMT_CBM_CFM); | |
67 | if (err < 0) { | |
68 | printk(KERN_ERR "can't set codec DAI configuration\n"); | |
69 | return err; | |
70 | } | |
71 | ||
72 | /* Set cpu DAI configuration */ | |
73 | err = snd_soc_dai_set_fmt(cpu_dai, | |
bd25867a | 74 | SND_SOC_DAIFMT_DSP_B | |
17f9ecf3 AK |
75 | SND_SOC_DAIFMT_NB_IF | |
76 | SND_SOC_DAIFMT_CBM_CFM); | |
77 | if (err < 0) { | |
78 | printk(KERN_ERR "can't set cpu DAI configuration\n"); | |
79 | return err; | |
80 | } | |
81 | ||
82 | /* Set the codec system clock for DAC and ADC */ | |
83 | err = | |
84 | snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); | |
85 | ||
86 | if (err < 0) { | |
87 | printk(KERN_ERR "can't set codec system clock\n"); | |
88 | return err; | |
89 | } | |
90 | ||
91 | return err; | |
92 | } | |
93 | ||
94 | static struct snd_soc_ops osk_ops = { | |
95 | .startup = osk_startup, | |
96 | .hw_params = osk_hw_params, | |
97 | .shutdown = osk_shutdown, | |
98 | }; | |
99 | ||
100 | static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { | |
101 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
102 | SND_SOC_DAPM_LINE("Line In", NULL), | |
103 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
104 | }; | |
105 | ||
106 | static const struct snd_soc_dapm_route audio_map[] = { | |
107 | {"Headphone Jack", NULL, "LHPOUT"}, | |
108 | {"Headphone Jack", NULL, "RHPOUT"}, | |
109 | ||
110 | {"LLINEIN", NULL, "Line In"}, | |
111 | {"RLINEIN", NULL, "Line In"}, | |
112 | ||
113 | {"MICIN", NULL, "Mic Jack"}, | |
114 | }; | |
115 | ||
116 | static int osk_tlv320aic23_init(struct snd_soc_codec *codec) | |
117 | { | |
118 | ||
119 | /* Add osk5912 specific widgets */ | |
120 | snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, | |
121 | ARRAY_SIZE(tlv320aic23_dapm_widgets)); | |
122 | ||
123 | /* Set up osk5912 specific audio path audio_map */ | |
124 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
125 | ||
126 | snd_soc_dapm_enable_pin(codec, "Headphone Jack"); | |
127 | snd_soc_dapm_enable_pin(codec, "Line In"); | |
128 | snd_soc_dapm_enable_pin(codec, "Mic Jack"); | |
129 | ||
130 | snd_soc_dapm_sync(codec); | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | /* Digital audio interface glue - connects codec <--> CPU */ | |
136 | static struct snd_soc_dai_link osk_dai = { | |
137 | .name = "TLV320AIC23", | |
138 | .stream_name = "AIC23", | |
139 | .cpu_dai = &omap_mcbsp_dai[0], | |
140 | .codec_dai = &tlv320aic23_dai, | |
141 | .init = osk_tlv320aic23_init, | |
142 | .ops = &osk_ops, | |
143 | }; | |
144 | ||
145 | /* Audio machine driver */ | |
87506549 | 146 | static struct snd_soc_card snd_soc_card_osk = { |
17f9ecf3 | 147 | .name = "OSK5912", |
87689d56 | 148 | .platform = &omap_soc_platform, |
17f9ecf3 AK |
149 | .dai_link = &osk_dai, |
150 | .num_links = 1, | |
151 | }; | |
152 | ||
153 | /* Audio subsystem */ | |
154 | static struct snd_soc_device osk_snd_devdata = { | |
87506549 | 155 | .card = &snd_soc_card_osk, |
17f9ecf3 AK |
156 | .codec_dev = &soc_codec_dev_tlv320aic23, |
157 | }; | |
158 | ||
159 | static struct platform_device *osk_snd_device; | |
160 | ||
161 | static int __init osk_soc_init(void) | |
162 | { | |
163 | int err; | |
164 | u32 curRate; | |
165 | struct device *dev; | |
166 | ||
167 | if (!(machine_is_omap_osk())) | |
168 | return -ENODEV; | |
169 | ||
170 | osk_snd_device = platform_device_alloc("soc-audio", -1); | |
171 | if (!osk_snd_device) | |
172 | return -ENOMEM; | |
173 | ||
174 | platform_set_drvdata(osk_snd_device, &osk_snd_devdata); | |
175 | osk_snd_devdata.dev = &osk_snd_device->dev; | |
176 | *(unsigned int *)osk_dai.cpu_dai->private_data = 0; /* McBSP1 */ | |
177 | err = platform_device_add(osk_snd_device); | |
178 | if (err) | |
179 | goto err1; | |
180 | ||
181 | dev = &osk_snd_device->dev; | |
182 | ||
183 | tlv320aic23_mclk = clk_get(dev, "mclk"); | |
184 | if (IS_ERR(tlv320aic23_mclk)) { | |
185 | printk(KERN_ERR "Could not get mclk clock\n"); | |
186 | return -ENODEV; | |
187 | } | |
188 | ||
189 | if (clk_get_usecount(tlv320aic23_mclk) > 0) { | |
190 | /* MCLK is already in use */ | |
191 | printk(KERN_WARNING | |
192 | "MCLK in use at %d Hz. We change it to %d Hz\n", | |
193 | (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK); | |
194 | } | |
195 | ||
196 | /* | |
197 | * Configure 12 MHz output on MCLK. | |
198 | */ | |
199 | curRate = (uint) clk_get_rate(tlv320aic23_mclk); | |
200 | if (curRate != CODEC_CLOCK) { | |
201 | if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) { | |
202 | printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n"); | |
203 | err = -ECANCELED; | |
204 | goto err1; | |
205 | } | |
206 | } | |
207 | ||
208 | printk(KERN_INFO "MCLK = %d [%d], usecount = %d\n", | |
209 | (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK, | |
210 | clk_get_usecount(tlv320aic23_mclk)); | |
211 | ||
212 | return 0; | |
213 | err1: | |
214 | clk_put(tlv320aic23_mclk); | |
215 | platform_device_del(osk_snd_device); | |
216 | platform_device_put(osk_snd_device); | |
217 | ||
218 | return err; | |
219 | ||
220 | } | |
221 | ||
222 | static void __exit osk_soc_exit(void) | |
223 | { | |
224 | platform_device_unregister(osk_snd_device); | |
225 | } | |
226 | ||
227 | module_init(osk_soc_init); | |
228 | module_exit(osk_soc_exit); | |
229 | ||
230 | MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); | |
231 | MODULE_DESCRIPTION("ALSA SoC OSK 5912"); | |
232 | MODULE_LICENSE("GPL"); |