ASoC: Fix a typo in jive_wm8750
[linux-2.6.git] / sound / soc / samsung / smdk_wm8580.c
1 /*
2  *  smdk_wm8580.c
3  *
4  *  Copyright (c) 2009 Samsung Electronics Co. Ltd
5  *  Author: Jaswinder Singh <jassi.brar@samsung.com>
6  *
7  *  This program is free software; you can redistribute  it and/or modify it
8  *  under  the terms of  the GNU General  Public License as published by the
9  *  Free Software Foundation;  either version 2 of the  License, or (at your
10  *  option) any later version.
11  */
12
13 #include <linux/module.h>
14 #include <sound/soc.h>
15 #include <sound/pcm_params.h>
16
17 #include <asm/mach-types.h>
18
19 #include "../codecs/wm8580.h"
20 #include "i2s.h"
21
22 /*
23  * Default CFG switch settings to use this driver:
24  *
25  *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
26  */
27
28 /* SMDK has a 12MHZ crystal attached to WM8580 */
29 #define SMDK_WM8580_FREQ 12000000
30
31 static int smdk_hw_params(struct snd_pcm_substream *substream,
32         struct snd_pcm_hw_params *params)
33 {
34         struct snd_soc_pcm_runtime *rtd = substream->private_data;
35         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
36         struct snd_soc_dai *codec_dai = rtd->codec_dai;
37         unsigned int pll_out;
38         int bfs, rfs, ret;
39
40         switch (params_format(params)) {
41         case SNDRV_PCM_FORMAT_U8:
42         case SNDRV_PCM_FORMAT_S8:
43                 bfs = 16;
44                 break;
45         case SNDRV_PCM_FORMAT_U16_LE:
46         case SNDRV_PCM_FORMAT_S16_LE:
47                 bfs = 32;
48                 break;
49         default:
50                 return -EINVAL;
51         }
52
53         /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
54          * This criterion can't be met if we request PLL output
55          * as {8000x256, 64000x256, 11025x256}Hz.
56          * As a wayout, we rather change rfs to a minimum value that
57          * results in (params_rate(params) * rfs), and itself, acceptable
58          * to both - the CODEC and the CPU.
59          */
60         switch (params_rate(params)) {
61         case 16000:
62         case 22050:
63         case 32000:
64         case 44100:
65         case 48000:
66         case 88200:
67         case 96000:
68                 rfs = 256;
69                 break;
70         case 64000:
71                 rfs = 384;
72                 break;
73         case 8000:
74         case 11025:
75                 rfs = 512;
76                 break;
77         default:
78                 return -EINVAL;
79         }
80         pll_out = params_rate(params) * rfs;
81
82         /* Set the Codec DAI configuration */
83         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
84                                          | SND_SOC_DAIFMT_NB_NF
85                                          | SND_SOC_DAIFMT_CBM_CFM);
86         if (ret < 0)
87                 return ret;
88
89         /* Set the AP DAI configuration */
90         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
91                                          | SND_SOC_DAIFMT_NB_NF
92                                          | SND_SOC_DAIFMT_CBM_CFM);
93         if (ret < 0)
94                 return ret;
95
96         /* Set WM8580 to drive MCLK from its PLLA */
97         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
98                                         WM8580_CLKSRC_PLLA);
99         if (ret < 0)
100                 return ret;
101
102         ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
103                                         SMDK_WM8580_FREQ, pll_out);
104         if (ret < 0)
105                 return ret;
106
107         ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
108                                      pll_out, SND_SOC_CLOCK_IN);
109         if (ret < 0)
110                 return ret;
111
112         return 0;
113 }
114
115 /*
116  * SMDK WM8580 DAI operations.
117  */
118 static struct snd_soc_ops smdk_ops = {
119         .hw_params = smdk_hw_params,
120 };
121
122 /* SMDK Playback widgets */
123 static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
124         SND_SOC_DAPM_HP("Front", NULL),
125         SND_SOC_DAPM_HP("Center+Sub", NULL),
126         SND_SOC_DAPM_HP("Rear", NULL),
127
128         SND_SOC_DAPM_MIC("MicIn", NULL),
129         SND_SOC_DAPM_LINE("LineIn", NULL),
130 };
131
132 /* SMDK-PAIFTX connections */
133 static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
134         /* MicIn feeds AINL */
135         {"AINL", NULL, "MicIn"},
136
137         /* LineIn feeds AINL/R */
138         {"AINL", NULL, "LineIn"},
139         {"AINR", NULL, "LineIn"},
140
141         /* Front Left/Right are fed VOUT1L/R */
142         {"Front", NULL, "VOUT1L"},
143         {"Front", NULL, "VOUT1R"},
144
145         /* Center/Sub are fed VOUT2L/R */
146         {"Center+Sub", NULL, "VOUT2L"},
147         {"Center+Sub", NULL, "VOUT2R"},
148
149         /* Rear Left/Right are fed VOUT3L/R */
150         {"Rear", NULL, "VOUT3L"},
151         {"Rear", NULL, "VOUT3R"},
152 };
153
154 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
155 {
156         struct snd_soc_codec *codec = rtd->codec;
157         struct snd_soc_dapm_context *dapm = &codec->dapm;
158
159         /* Enabling the microphone requires the fitting of a 0R
160          * resistor to connect the line from the microphone jack.
161          */
162         snd_soc_dapm_disable_pin(dapm, "MicIn");
163
164         return 0;
165 }
166
167 enum {
168         PRI_PLAYBACK = 0,
169         PRI_CAPTURE,
170         SEC_PLAYBACK,
171 };
172
173 static struct snd_soc_dai_link smdk_dai[] = {
174         [PRI_PLAYBACK] = { /* Primary Playback i/f */
175                 .name = "WM8580 PAIF RX",
176                 .stream_name = "Playback",
177                 .cpu_dai_name = "samsung-i2s.0",
178                 .codec_dai_name = "wm8580-hifi-playback",
179                 .platform_name = "samsung-audio",
180                 .codec_name = "wm8580.0-001b",
181                 .ops = &smdk_ops,
182         },
183         [PRI_CAPTURE] = { /* Primary Capture i/f */
184                 .name = "WM8580 PAIF TX",
185                 .stream_name = "Capture",
186                 .cpu_dai_name = "samsung-i2s.0",
187                 .codec_dai_name = "wm8580-hifi-capture",
188                 .platform_name = "samsung-audio",
189                 .codec_name = "wm8580.0-001b",
190                 .init = smdk_wm8580_init_paiftx,
191                 .ops = &smdk_ops,
192         },
193         [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
194                 .name = "Sec_FIFO TX",
195                 .stream_name = "Playback",
196                 .cpu_dai_name = "samsung-i2s.x",
197                 .codec_dai_name = "wm8580-hifi-playback",
198                 .platform_name = "samsung-audio",
199                 .codec_name = "wm8580.0-001b",
200                 .ops = &smdk_ops,
201         },
202 };
203
204 static struct snd_soc_card smdk = {
205         .name = "SMDK-I2S",
206         .dai_link = smdk_dai,
207         .num_links = 2,
208
209         .dapm_widgets = smdk_wm8580_dapm_widgets,
210         .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
211         .dapm_routes = smdk_wm8580_audio_map,
212         .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
213 };
214
215 static struct platform_device *smdk_snd_device;
216
217 static int __init smdk_audio_init(void)
218 {
219         int ret;
220         char *str;
221
222         if (machine_is_smdkc100()
223                         || machine_is_smdkv210() || machine_is_smdkc110()) {
224                 smdk.num_links = 3;
225                 /* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
226                 str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
227                 str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
228         } else if (machine_is_smdk6410()) {
229                 str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
230                 str[strlen(str) - 1] = '2';
231                 str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
232                 str[strlen(str) - 1] = '2';
233         }
234
235         smdk_snd_device = platform_device_alloc("soc-audio", -1);
236         if (!smdk_snd_device)
237                 return -ENOMEM;
238
239         platform_set_drvdata(smdk_snd_device, &smdk);
240         ret = platform_device_add(smdk_snd_device);
241
242         if (ret)
243                 platform_device_put(smdk_snd_device);
244
245         return ret;
246 }
247 module_init(smdk_audio_init);
248
249 static void __exit smdk_audio_exit(void)
250 {
251         platform_device_unregister(smdk_snd_device);
252 }
253 module_exit(smdk_audio_exit);
254
255 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
256 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
257 MODULE_LICENSE("GPL");