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Diffstat (limited to 'sound/soc/s3c24xx/smdk_wm8580.c')
-rw-r--r--sound/soc/s3c24xx/smdk_wm8580.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/sound/soc/s3c24xx/smdk_wm8580.c b/sound/soc/s3c24xx/smdk_wm8580.c
new file mode 100644
index 000000000000..b1b3d12abcb9
--- /dev/null
+++ b/sound/soc/s3c24xx/smdk_wm8580.c
@@ -0,0 +1,254 @@
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/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
20#include "../codecs/wm8580.h"
21#include "dma.h"
22#include "i2s.h"
23
24/*
25 * Default CFG switch settings to use this driver:
26 *
27 * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
28 */
29
30/* SMDK has a 12MHZ crystal attached to WM8580 */
31#define SMDK_WM8580_FREQ 12000000
32
33static int smdk_hw_params(struct snd_pcm_substream *substream,
34 struct snd_pcm_hw_params *params)
35{
36 struct snd_soc_pcm_runtime *rtd = substream->private_data;
37 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
38 struct snd_soc_dai *codec_dai = rtd->codec_dai;
39 unsigned int pll_out;
40 int bfs, rfs, ret;
41
42 switch (params_format(params)) {
43 case SNDRV_PCM_FORMAT_U8:
44 case SNDRV_PCM_FORMAT_S8:
45 bfs = 16;
46 break;
47 case SNDRV_PCM_FORMAT_U16_LE:
48 case SNDRV_PCM_FORMAT_S16_LE:
49 bfs = 32;
50 break;
51 default:
52 return -EINVAL;
53 }
54
55 /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
56 * This criterion can't be met if we request PLL output
57 * as {8000x256, 64000x256, 11025x256}Hz.
58 * As a wayout, we rather change rfs to a minimum value that
59 * results in (params_rate(params) * rfs), and itself, acceptable
60 * to both - the CODEC and the CPU.
61 */
62 switch (params_rate(params)) {
63 case 16000:
64 case 22050:
65 case 32000:
66 case 44100:
67 case 48000:
68 case 88200:
69 case 96000:
70 rfs = 256;
71 break;
72 case 64000:
73 rfs = 384;
74 break;
75 case 8000:
76 case 11025:
77 rfs = 512;
78 break;
79 default:
80 return -EINVAL;
81 }
82 pll_out = params_rate(params) * rfs;
83
84 /* Set the Codec DAI configuration */
85 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
86 | SND_SOC_DAIFMT_NB_NF
87 | SND_SOC_DAIFMT_CBM_CFM);
88 if (ret < 0)
89 return ret;
90
91 /* Set the AP DAI configuration */
92 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
93 | SND_SOC_DAIFMT_NB_NF
94 | SND_SOC_DAIFMT_CBM_CFM);
95 if (ret < 0)
96 return ret;
97
98 /* Set WM8580 to drive MCLK from its PLLA */
99 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
100 WM8580_CLKSRC_PLLA);
101 if (ret < 0)
102 return ret;
103
104 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
105 SMDK_WM8580_FREQ, pll_out);
106 if (ret < 0)
107 return ret;
108
109 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
110 pll_out, SND_SOC_CLOCK_IN);
111 if (ret < 0)
112 return ret;
113
114 return 0;
115}
116
117/*
118 * SMDK WM8580 DAI operations.
119 */
120static struct snd_soc_ops smdk_ops = {
121 .hw_params = smdk_hw_params,
122};
123
124/* SMDK Playback widgets */
125static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
126 SND_SOC_DAPM_HP("Front", NULL),
127 SND_SOC_DAPM_HP("Center+Sub", NULL),
128 SND_SOC_DAPM_HP("Rear", NULL),
129};
130
131/* SMDK Capture widgets */
132static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
133 SND_SOC_DAPM_MIC("MicIn", NULL),
134 SND_SOC_DAPM_LINE("LineIn", NULL),
135};
136
137/* SMDK-PAIFTX connections */
138static const struct snd_soc_dapm_route audio_map_tx[] = {
139 /* MicIn feeds AINL */
140 {"AINL", NULL, "MicIn"},
141
142 /* LineIn feeds AINL/R */
143 {"AINL", NULL, "LineIn"},
144 {"AINR", NULL, "LineIn"},
145};
146
147/* SMDK-PAIFRX connections */
148static const struct snd_soc_dapm_route audio_map_rx[] = {
149 /* Front Left/Right are fed VOUT1L/R */
150 {"Front", NULL, "VOUT1L"},
151 {"Front", NULL, "VOUT1R"},
152
153 /* Center/Sub are fed VOUT2L/R */
154 {"Center+Sub", NULL, "VOUT2L"},
155 {"Center+Sub", NULL, "VOUT2R"},
156
157 /* Rear Left/Right are fed VOUT3L/R */
158 {"Rear", NULL, "VOUT3L"},
159 {"Rear", NULL, "VOUT3R"},
160};
161
162static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
163{
164 struct snd_soc_codec *codec = rtd->codec;
165 struct snd_soc_dapm_context *dapm = &codec->dapm;
166
167 /* Add smdk specific Capture widgets */
168 snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
169 ARRAY_SIZE(wm8580_dapm_widgets_cpt));
170
171 /* Set up PAIFTX audio path */
172 snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
173
174 /* Enabling the microphone requires the fitting of a 0R
175 * resistor to connect the line from the microphone jack.
176 */
177 snd_soc_dapm_disable_pin(dapm, "MicIn");
178
179 /* signal a DAPM event */
180 snd_soc_dapm_sync(dapm);
181
182 return 0;
183}
184
185static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
186{
187 struct snd_soc_codec *codec = rtd->codec;
188 struct snd_soc_dapm_context *dapm = &codec->dapm;
189
190 /* Add smdk specific Playback widgets */
191 snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
192 ARRAY_SIZE(wm8580_dapm_widgets_pbk));
193
194 /* Set up PAIFRX audio path */
195 snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
196
197 /* signal a DAPM event */
198 snd_soc_dapm_sync(dapm);
199
200 return 0;
201}
202
203static struct snd_soc_dai_link smdk_dai[] = {
204{ /* Primary Playback i/f */
205 .name = "WM8580 PAIF RX",
206 .stream_name = "Playback",
207 .cpu_dai_name = "samsung-i2s.2",
208 .codec_dai_name = "wm8580-hifi-playback",
209 .platform_name = "samsung-audio",
210 .codec_name = "wm8580-codec.0-001b",
211 .init = smdk_wm8580_init_paifrx,
212 .ops = &smdk_ops,
213},
214{ /* Primary Capture i/f */
215 .name = "WM8580 PAIF TX",
216 .stream_name = "Capture",
217 .cpu_dai_name = "samsung-i2s.2",
218 .codec_dai_name = "wm8580-hifi-capture",
219 .platform_name = "samsung-audio",
220 .codec_name = "wm8580-codec.0-001b",
221 .init = smdk_wm8580_init_paiftx,
222 .ops = &smdk_ops,
223},
224};
225
226static struct snd_soc_card smdk = {
227 .name = "SMDK-I2S",
228 .dai_link = smdk_dai,
229 .num_links = ARRAY_SIZE(smdk_dai),
230};
231
232static struct platform_device *smdk_snd_device;
233
234static int __init smdk_audio_init(void)
235{
236 int ret;
237
238 smdk_snd_device = platform_device_alloc("soc-audio", -1);
239 if (!smdk_snd_device)
240 return -ENOMEM;
241
242 platform_set_drvdata(smdk_snd_device, &smdk);
243 ret = platform_device_add(smdk_snd_device);
244
245 if (ret)
246 platform_device_put(smdk_snd_device);
247
248 return ret;
249}
250module_init(smdk_audio_init);
251
252MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
253MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
254MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-08 00:34:30 -0500