4 * Copyright (c) 2009 Samsung Electronics Co. Ltd
5 * Author: Jaswinder Singh <jassi.brar@samsung.com>
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.
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>
20 #include "../codecs/wm8580.h"
22 #include "s3c64xx-i2s.h"
25 * Default CFG switch settings to use this driver:
27 * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
30 /* SMDK64XX has a 12MHZ crystal attached to WM8580 */
31 #define SMDK64XX_WM8580_FREQ 12000000
33 static int smdk64xx_hw_params(struct snd_pcm_substream *substream,
34 struct snd_pcm_hw_params *params)
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;
42 switch (params_format(params)) {
43 case SNDRV_PCM_FORMAT_U8:
44 case SNDRV_PCM_FORMAT_S8:
47 case SNDRV_PCM_FORMAT_U16_LE:
48 case SNDRV_PCM_FORMAT_S16_LE:
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.
62 switch (params_rate(params)) {
82 pll_out = params_rate(params) * rfs;
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);
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);
98 ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
103 /* We use PCLK for basic ops in SoC-Slave mode */
104 ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
105 0, SND_SOC_CLOCK_IN);
109 /* Set WM8580 to drive MCLK from its PLLA */
110 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
115 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
116 SMDK64XX_WM8580_FREQ, pll_out);
120 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
121 pll_out, SND_SOC_CLOCK_IN);
125 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
129 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
137 * SMDK64XX WM8580 DAI operations.
139 static struct snd_soc_ops smdk64xx_ops = {
140 .hw_params = smdk64xx_hw_params,
143 /* SMDK64xx Playback widgets */
144 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
145 SND_SOC_DAPM_HP("Front", NULL),
146 SND_SOC_DAPM_HP("Center+Sub", NULL),
147 SND_SOC_DAPM_HP("Rear", NULL),
150 /* SMDK64xx Capture widgets */
151 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
152 SND_SOC_DAPM_MIC("MicIn", NULL),
153 SND_SOC_DAPM_LINE("LineIn", NULL),
156 /* SMDK-PAIFTX connections */
157 static const struct snd_soc_dapm_route audio_map_tx[] = {
158 /* MicIn feeds AINL */
159 {"AINL", NULL, "MicIn"},
161 /* LineIn feeds AINL/R */
162 {"AINL", NULL, "LineIn"},
163 {"AINR", NULL, "LineIn"},
166 /* SMDK-PAIFRX connections */
167 static const struct snd_soc_dapm_route audio_map_rx[] = {
168 /* Front Left/Right are fed VOUT1L/R */
169 {"Front", NULL, "VOUT1L"},
170 {"Front", NULL, "VOUT1R"},
172 /* Center/Sub are fed VOUT2L/R */
173 {"Center+Sub", NULL, "VOUT2L"},
174 {"Center+Sub", NULL, "VOUT2R"},
176 /* Rear Left/Right are fed VOUT3L/R */
177 {"Rear", NULL, "VOUT3L"},
178 {"Rear", NULL, "VOUT3R"},
181 static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
183 struct snd_soc_codec *codec = rtd->codec;
184 struct snd_soc_dapm_context *dapm = &codec->dapm;
186 /* Add smdk64xx specific Capture widgets */
187 snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
188 ARRAY_SIZE(wm8580_dapm_widgets_cpt));
190 /* Set up PAIFTX audio path */
191 snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
193 /* Enabling the microphone requires the fitting of a 0R
194 * resistor to connect the line from the microphone jack.
196 snd_soc_dapm_disable_pin(dapm, "MicIn");
198 /* signal a DAPM event */
199 snd_soc_dapm_sync(dapm);
204 static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
206 struct snd_soc_codec *codec = rtd->codec;
207 struct snd_soc_dapm_context *dapm = &codec->dapm;
209 /* Add smdk64xx specific Playback widgets */
210 snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
211 ARRAY_SIZE(wm8580_dapm_widgets_pbk));
213 /* Set up PAIFRX audio path */
214 snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
216 /* signal a DAPM event */
217 snd_soc_dapm_sync(dapm);
222 static struct snd_soc_dai_link smdk64xx_dai[] = {
223 { /* Primary Playback i/f */
224 .name = "WM8580 PAIF RX",
225 .stream_name = "Playback",
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",
230 .init = smdk64xx_wm8580_init_paifrx,
231 .ops = &smdk64xx_ops,
233 { /* Primary Capture i/f */
234 .name = "WM8580 PAIF TX",
235 .stream_name = "Capture",
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",
240 .init = smdk64xx_wm8580_init_paiftx,
241 .ops = &smdk64xx_ops,
245 static struct snd_soc_card smdk64xx = {
246 .name = "SMDK64xx 5.1",
247 .dai_link = smdk64xx_dai,
248 .num_links = ARRAY_SIZE(smdk64xx_dai),
251 static struct platform_device *smdk64xx_snd_device;
253 static int __init smdk64xx_audio_init(void)
257 smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
258 if (!smdk64xx_snd_device)
261 platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
262 ret = platform_device_add(smdk64xx_snd_device);
265 platform_device_put(smdk64xx_snd_device);
269 module_init(smdk64xx_audio_init);
271 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
272 MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
273 MODULE_LICENSE("GPL");