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d0f5fa17 | 1 | /* |
2 | * smdk64xx_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/platform_device.h> | |
14 | #include <linux/clk.h> | |
15 | #include <sound/core.h> | |
16 | #include <sound/pcm.h> | |
17 | #include <sound/pcm_params.h> | |
18 | #include <sound/soc.h> | |
19 | #include <sound/soc-dapm.h> | |
20 | ||
21 | #include "../codecs/wm8580.h" | |
d3ff5a3e | 22 | #include "s3c-dma.h" |
d0f5fa17 | 23 | #include "s3c64xx-i2s.h" |
24 | ||
9d37e894 MB |
25 | /* |
26 | * Default CFG switch settings to use this driver: | |
27 | * | |
28 | * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On | |
29 | */ | |
30 | ||
d0f5fa17 | 31 | /* SMDK64XX has a 12MHZ crystal attached to WM8580 */ |
32 | #define SMDK64XX_WM8580_FREQ 12000000 | |
33 | ||
34 | static int smdk64xx_hw_params(struct snd_pcm_substream *substream, | |
35 | struct snd_pcm_hw_params *params) | |
36 | { | |
37 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
38 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
39 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
d0f5fa17 | 40 | unsigned int pll_out; |
41 | int bfs, rfs, ret; | |
42 | ||
43 | switch (params_format(params)) { | |
44 | case SNDRV_PCM_FORMAT_U8: | |
45 | case SNDRV_PCM_FORMAT_S8: | |
46 | bfs = 16; | |
47 | break; | |
48 | case SNDRV_PCM_FORMAT_U16_LE: | |
49 | case SNDRV_PCM_FORMAT_S16_LE: | |
50 | bfs = 32; | |
51 | break; | |
52 | default: | |
53 | return -EINVAL; | |
54 | } | |
55 | ||
56 | /* The Fvco for WM8580 PLLs must fall within [90,100]MHz. | |
57 | * This criterion can't be met if we request PLL output | |
58 | * as {8000x256, 64000x256, 11025x256}Hz. | |
59 | * As a wayout, we rather change rfs to a minimum value that | |
60 | * results in (params_rate(params) * rfs), and itself, acceptable | |
61 | * to both - the CODEC and the CPU. | |
62 | */ | |
63 | switch (params_rate(params)) { | |
64 | case 16000: | |
65 | case 22050: | |
66 | case 32000: | |
67 | case 44100: | |
68 | case 48000: | |
69 | case 88200: | |
70 | case 96000: | |
71 | rfs = 256; | |
72 | break; | |
73 | case 64000: | |
74 | rfs = 384; | |
75 | break; | |
76 | case 8000: | |
77 | case 11025: | |
78 | rfs = 512; | |
79 | break; | |
80 | default: | |
81 | return -EINVAL; | |
82 | } | |
83 | pll_out = params_rate(params) * rfs; | |
84 | ||
85 | /* Set the Codec DAI configuration */ | |
86 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
87 | | SND_SOC_DAIFMT_NB_NF | |
88 | | SND_SOC_DAIFMT_CBM_CFM); | |
89 | if (ret < 0) | |
90 | return ret; | |
91 | ||
92 | /* Set the AP DAI configuration */ | |
93 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
94 | | SND_SOC_DAIFMT_NB_NF | |
95 | | SND_SOC_DAIFMT_CBM_CFM); | |
96 | if (ret < 0) | |
97 | return ret; | |
98 | ||
99 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK, | |
100 | 0, SND_SOC_CLOCK_IN); | |
101 | if (ret < 0) | |
102 | return ret; | |
103 | ||
104 | /* We use PCLK for basic ops in SoC-Slave mode */ | |
105 | ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK, | |
106 | 0, SND_SOC_CLOCK_IN); | |
107 | if (ret < 0) | |
108 | return ret; | |
109 | ||
26d95b6e | 110 | /* Set WM8580 to drive MCLK from its PLLA */ |
d0f5fa17 | 111 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, |
112 | WM8580_CLKSRC_PLLA); | |
113 | if (ret < 0) | |
114 | return ret; | |
115 | ||
116 | /* Explicitly set WM8580-DAC to source from MCLK */ | |
117 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL, | |
118 | WM8580_CLKSRC_MCLK); | |
119 | if (ret < 0) | |
120 | return ret; | |
121 | ||
ba2b87f5 | 122 | ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, |
d0f5fa17 | 123 | SMDK64XX_WM8580_FREQ, pll_out); |
124 | if (ret < 0) | |
125 | return ret; | |
126 | ||
127 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs); | |
128 | if (ret < 0) | |
129 | return ret; | |
130 | ||
131 | ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs); | |
132 | if (ret < 0) | |
133 | return ret; | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | /* | |
139 | * SMDK64XX WM8580 DAI operations. | |
140 | */ | |
141 | static struct snd_soc_ops smdk64xx_ops = { | |
142 | .hw_params = smdk64xx_hw_params, | |
143 | }; | |
144 | ||
145 | /* SMDK64xx Playback widgets */ | |
146 | static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = { | |
698cb111 MB |
147 | SND_SOC_DAPM_HP("Front", NULL), |
148 | SND_SOC_DAPM_HP("Center+Sub", NULL), | |
149 | SND_SOC_DAPM_HP("Rear", NULL), | |
d0f5fa17 | 150 | }; |
151 | ||
152 | /* SMDK64xx Capture widgets */ | |
153 | static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = { | |
154 | SND_SOC_DAPM_MIC("MicIn", NULL), | |
155 | SND_SOC_DAPM_LINE("LineIn", NULL), | |
156 | }; | |
157 | ||
158 | /* SMDK-PAIFTX connections */ | |
159 | static const struct snd_soc_dapm_route audio_map_tx[] = { | |
160 | /* MicIn feeds AINL */ | |
161 | {"AINL", NULL, "MicIn"}, | |
162 | ||
163 | /* LineIn feeds AINL/R */ | |
164 | {"AINL", NULL, "LineIn"}, | |
165 | {"AINR", NULL, "LineIn"}, | |
166 | }; | |
167 | ||
168 | /* SMDK-PAIFRX connections */ | |
169 | static const struct snd_soc_dapm_route audio_map_rx[] = { | |
170 | /* Front Left/Right are fed VOUT1L/R */ | |
698cb111 MB |
171 | {"Front", NULL, "VOUT1L"}, |
172 | {"Front", NULL, "VOUT1R"}, | |
d0f5fa17 | 173 | |
174 | /* Center/Sub are fed VOUT2L/R */ | |
698cb111 MB |
175 | {"Center+Sub", NULL, "VOUT2L"}, |
176 | {"Center+Sub", NULL, "VOUT2R"}, | |
d0f5fa17 | 177 | |
178 | /* Rear Left/Right are fed VOUT3L/R */ | |
698cb111 MB |
179 | {"Rear", NULL, "VOUT3L"}, |
180 | {"Rear", NULL, "VOUT3R"}, | |
d0f5fa17 | 181 | }; |
182 | ||
f0fba2ad | 183 | static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) |
d0f5fa17 | 184 | { |
f0fba2ad LG |
185 | struct snd_soc_codec *codec = rtd->codec; |
186 | ||
d0f5fa17 | 187 | /* Add smdk64xx specific Capture widgets */ |
188 | snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt, | |
189 | ARRAY_SIZE(wm8580_dapm_widgets_cpt)); | |
190 | ||
191 | /* Set up PAIFTX audio path */ | |
192 | snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx)); | |
193 | ||
26d95b6e MB |
194 | /* Enabling the microphone requires the fitting of a 0R |
195 | * resistor to connect the line from the microphone jack. | |
196 | */ | |
197 | snd_soc_dapm_disable_pin(codec, "MicIn"); | |
d0f5fa17 | 198 | |
199 | /* signal a DAPM event */ | |
200 | snd_soc_dapm_sync(codec); | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
f0fba2ad | 205 | static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd) |
d0f5fa17 | 206 | { |
f0fba2ad LG |
207 | struct snd_soc_codec *codec = rtd->codec; |
208 | ||
d0f5fa17 | 209 | /* Add smdk64xx specific Playback widgets */ |
210 | snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk, | |
211 | ARRAY_SIZE(wm8580_dapm_widgets_pbk)); | |
212 | ||
213 | /* Set up PAIFRX audio path */ | |
214 | snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx)); | |
215 | ||
d0f5fa17 | 216 | /* signal a DAPM event */ |
217 | snd_soc_dapm_sync(codec); | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | static struct snd_soc_dai_link smdk64xx_dai[] = { | |
223 | { /* Primary Playback i/f */ | |
224 | .name = "WM8580 PAIF RX", | |
225 | .stream_name = "Playback", | |
f0fba2ad LG |
226 | .cpu_dai_name = "s3c64xx-iis-v4", |
227 | .codec_dai_name = "wm8580-hifi-playback", | |
228 | .platform_name = "s3c24xx-pcm-audio", | |
229 | .codec_name = "wm8580-codec.0-001b", | |
d0f5fa17 | 230 | .init = smdk64xx_wm8580_init_paifrx, |
231 | .ops = &smdk64xx_ops, | |
232 | }, | |
233 | { /* Primary Capture i/f */ | |
234 | .name = "WM8580 PAIF TX", | |
235 | .stream_name = "Capture", | |
f0fba2ad LG |
236 | .cpu_dai_name = "s3c64xx-iis-v4", |
237 | .codec_dai_name = "wm8580-hifi-capture", | |
238 | .platform_name = "s3c24xx-pcm-audio", | |
239 | .codec_name = "wm8580-codec.0-001b", | |
d0f5fa17 | 240 | .init = smdk64xx_wm8580_init_paiftx, |
241 | .ops = &smdk64xx_ops, | |
242 | }, | |
243 | }; | |
244 | ||
245 | static struct snd_soc_card smdk64xx = { | |
246 | .name = "smdk64xx", | |
d0f5fa17 | 247 | .dai_link = smdk64xx_dai, |
248 | .num_links = ARRAY_SIZE(smdk64xx_dai), | |
249 | }; | |
250 | ||
d0f5fa17 | 251 | static struct platform_device *smdk64xx_snd_device; |
252 | ||
253 | static int __init smdk64xx_audio_init(void) | |
254 | { | |
255 | int ret; | |
256 | ||
257 | smdk64xx_snd_device = platform_device_alloc("soc-audio", -1); | |
258 | if (!smdk64xx_snd_device) | |
259 | return -ENOMEM; | |
260 | ||
f0fba2ad | 261 | platform_set_drvdata(smdk64xx_snd_device, &smdk64xx); |
d0f5fa17 | 262 | ret = platform_device_add(smdk64xx_snd_device); |
263 | ||
264 | if (ret) | |
265 | platform_device_put(smdk64xx_snd_device); | |
266 | ||
267 | return ret; | |
268 | } | |
269 | module_init(smdk64xx_audio_init); | |
270 | ||
271 | MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com"); | |
272 | MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580"); | |
273 | MODULE_LICENSE("GPL"); |