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d0f5fa17 | 1 | /* |
d98ce6cf | 2 | * smdk_wm8580.c |
d0f5fa17 | 3 | * |
4 | * Copyright (c) 2009 Samsung Electronics Co. Ltd | |
df8ad335 | 5 | * Author: Jaswinder Singh <jassisinghbrar@gmail.com> |
d0f5fa17 | 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 | ||
da155d5b | 13 | #include <linux/module.h> |
d0f5fa17 | 14 | #include <sound/soc.h> |
0378b6ac | 15 | #include <sound/pcm_params.h> |
d0f5fa17 | 16 | |
17 | #include "../codecs/wm8580.h" | |
0fff21a8 | 18 | #include "i2s.h" |
d0f5fa17 | 19 | |
9d37e894 MB |
20 | /* |
21 | * Default CFG switch settings to use this driver: | |
22 | * | |
23 | * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On | |
24 | */ | |
25 | ||
d98ce6cf JB |
26 | /* SMDK has a 12MHZ crystal attached to WM8580 */ |
27 | #define SMDK_WM8580_FREQ 12000000 | |
d0f5fa17 | 28 | |
d98ce6cf | 29 | static int smdk_hw_params(struct snd_pcm_substream *substream, |
d0f5fa17 | 30 | struct snd_pcm_hw_params *params) |
31 | { | |
32 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 33 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
d0f5fa17 | 34 | unsigned int pll_out; |
e85a7099 | 35 | int rfs, ret; |
d0f5fa17 | 36 | |
88ce1465 TB |
37 | switch (params_width(params)) { |
38 | case 8: | |
88ce1465 | 39 | case 16: |
d0f5fa17 | 40 | break; |
41 | default: | |
42 | return -EINVAL; | |
43 | } | |
44 | ||
45 | /* The Fvco for WM8580 PLLs must fall within [90,100]MHz. | |
46 | * This criterion can't be met if we request PLL output | |
47 | * as {8000x256, 64000x256, 11025x256}Hz. | |
48 | * As a wayout, we rather change rfs to a minimum value that | |
49 | * results in (params_rate(params) * rfs), and itself, acceptable | |
50 | * to both - the CODEC and the CPU. | |
51 | */ | |
52 | switch (params_rate(params)) { | |
53 | case 16000: | |
54 | case 22050: | |
55 | case 32000: | |
56 | case 44100: | |
57 | case 48000: | |
58 | case 88200: | |
59 | case 96000: | |
60 | rfs = 256; | |
61 | break; | |
62 | case 64000: | |
63 | rfs = 384; | |
64 | break; | |
65 | case 8000: | |
66 | case 11025: | |
67 | rfs = 512; | |
68 | break; | |
69 | default: | |
70 | return -EINVAL; | |
71 | } | |
72 | pll_out = params_rate(params) * rfs; | |
73 | ||
26d95b6e | 74 | /* Set WM8580 to drive MCLK from its PLLA */ |
d0f5fa17 | 75 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, |
76 | WM8580_CLKSRC_PLLA); | |
77 | if (ret < 0) | |
78 | return ret; | |
79 | ||
c5607d8e | 80 | ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, |
d98ce6cf | 81 | SMDK_WM8580_FREQ, pll_out); |
d0f5fa17 | 82 | if (ret < 0) |
83 | return ret; | |
84 | ||
c5607d8e MB |
85 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, |
86 | pll_out, SND_SOC_CLOCK_IN); | |
d0f5fa17 | 87 | if (ret < 0) |
88 | return ret; | |
89 | ||
d0f5fa17 | 90 | return 0; |
91 | } | |
92 | ||
93 | /* | |
d98ce6cf | 94 | * SMDK WM8580 DAI operations. |
d0f5fa17 | 95 | */ |
d98ce6cf JB |
96 | static struct snd_soc_ops smdk_ops = { |
97 | .hw_params = smdk_hw_params, | |
d0f5fa17 | 98 | }; |
99 | ||
d98ce6cf | 100 | /* SMDK Playback widgets */ |
ce363f6d | 101 | static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = { |
698cb111 MB |
102 | SND_SOC_DAPM_HP("Front", NULL), |
103 | SND_SOC_DAPM_HP("Center+Sub", NULL), | |
104 | SND_SOC_DAPM_HP("Rear", NULL), | |
d0f5fa17 | 105 | |
d0f5fa17 | 106 | SND_SOC_DAPM_MIC("MicIn", NULL), |
107 | SND_SOC_DAPM_LINE("LineIn", NULL), | |
108 | }; | |
109 | ||
110 | /* SMDK-PAIFTX connections */ | |
ce363f6d | 111 | static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = { |
d0f5fa17 | 112 | /* MicIn feeds AINL */ |
113 | {"AINL", NULL, "MicIn"}, | |
114 | ||
115 | /* LineIn feeds AINL/R */ | |
116 | {"AINL", NULL, "LineIn"}, | |
117 | {"AINR", NULL, "LineIn"}, | |
d0f5fa17 | 118 | |
d0f5fa17 | 119 | /* Front Left/Right are fed VOUT1L/R */ |
698cb111 MB |
120 | {"Front", NULL, "VOUT1L"}, |
121 | {"Front", NULL, "VOUT1R"}, | |
d0f5fa17 | 122 | |
123 | /* Center/Sub are fed VOUT2L/R */ | |
698cb111 MB |
124 | {"Center+Sub", NULL, "VOUT2L"}, |
125 | {"Center+Sub", NULL, "VOUT2R"}, | |
d0f5fa17 | 126 | |
127 | /* Rear Left/Right are fed VOUT3L/R */ | |
698cb111 MB |
128 | {"Rear", NULL, "VOUT3L"}, |
129 | {"Rear", NULL, "VOUT3R"}, | |
d0f5fa17 | 130 | }; |
131 | ||
d98ce6cf | 132 | static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) |
d0f5fa17 | 133 | { |
26d95b6e MB |
134 | /* Enabling the microphone requires the fitting of a 0R |
135 | * resistor to connect the line from the microphone jack. | |
136 | */ | |
e236d4d7 | 137 | snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn"); |
d0f5fa17 | 138 | |
d0f5fa17 | 139 | return 0; |
140 | } | |
141 | ||
b0f39c25 JB |
142 | enum { |
143 | PRI_PLAYBACK = 0, | |
144 | PRI_CAPTURE, | |
b0f39c25 JB |
145 | }; |
146 | ||
7a57ca23 LPC |
147 | #define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ |
148 | SND_SOC_DAIFMT_CBM_CFM) | |
149 | ||
d98ce6cf | 150 | static struct snd_soc_dai_link smdk_dai[] = { |
b0f39c25 JB |
151 | [PRI_PLAYBACK] = { /* Primary Playback i/f */ |
152 | .name = "WM8580 PAIF RX", | |
153 | .stream_name = "Playback", | |
cd9e2b62 | 154 | .cpu_dai_name = "samsung-i2s.2", |
b0f39c25 | 155 | .codec_dai_name = "wm8580-hifi-playback", |
a08485d8 | 156 | .platform_name = "samsung-i2s.0", |
5d5d09b2 | 157 | .codec_name = "wm8580.0-001b", |
7a57ca23 | 158 | .dai_fmt = SMDK_DAI_FMT, |
b0f39c25 JB |
159 | .ops = &smdk_ops, |
160 | }, | |
161 | [PRI_CAPTURE] = { /* Primary Capture i/f */ | |
162 | .name = "WM8580 PAIF TX", | |
163 | .stream_name = "Capture", | |
cd9e2b62 | 164 | .cpu_dai_name = "samsung-i2s.2", |
b0f39c25 | 165 | .codec_dai_name = "wm8580-hifi-capture", |
a08485d8 | 166 | .platform_name = "samsung-i2s.0", |
5d5d09b2 | 167 | .codec_name = "wm8580.0-001b", |
7a57ca23 | 168 | .dai_fmt = SMDK_DAI_FMT, |
b0f39c25 JB |
169 | .init = smdk_wm8580_init_paiftx, |
170 | .ops = &smdk_ops, | |
171 | }, | |
d0f5fa17 | 172 | }; |
173 | ||
d98ce6cf JB |
174 | static struct snd_soc_card smdk = { |
175 | .name = "SMDK-I2S", | |
095d79dc | 176 | .owner = THIS_MODULE, |
d98ce6cf | 177 | .dai_link = smdk_dai, |
cd9e2b62 | 178 | .num_links = ARRAY_SIZE(smdk_dai), |
ce363f6d MB |
179 | |
180 | .dapm_widgets = smdk_wm8580_dapm_widgets, | |
181 | .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets), | |
182 | .dapm_routes = smdk_wm8580_audio_map, | |
183 | .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map), | |
d0f5fa17 | 184 | }; |
185 | ||
d98ce6cf | 186 | static struct platform_device *smdk_snd_device; |
d0f5fa17 | 187 | |
d98ce6cf | 188 | static int __init smdk_audio_init(void) |
d0f5fa17 | 189 | { |
190 | int ret; | |
191 | ||
d98ce6cf JB |
192 | smdk_snd_device = platform_device_alloc("soc-audio", -1); |
193 | if (!smdk_snd_device) | |
d0f5fa17 | 194 | return -ENOMEM; |
195 | ||
d98ce6cf JB |
196 | platform_set_drvdata(smdk_snd_device, &smdk); |
197 | ret = platform_device_add(smdk_snd_device); | |
d0f5fa17 | 198 | |
199 | if (ret) | |
d98ce6cf | 200 | platform_device_put(smdk_snd_device); |
d0f5fa17 | 201 | |
202 | return ret; | |
203 | } | |
d98ce6cf | 204 | module_init(smdk_audio_init); |
d0f5fa17 | 205 | |
38533698 MB |
206 | static void __exit smdk_audio_exit(void) |
207 | { | |
208 | platform_device_unregister(smdk_snd_device); | |
209 | } | |
210 | module_exit(smdk_audio_exit); | |
211 | ||
df8ad335 | 212 | MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com"); |
d98ce6cf | 213 | MODULE_DESCRIPTION("ALSA SoC SMDK WM8580"); |
d0f5fa17 | 214 | MODULE_LICENSE("GPL"); |