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>
19 #include <sound/soc-dapm.h>
21 #include "../codecs/wm8580.h"
23 #include "s3c64xx-i2s.h"
26 * Default CFG switch settings to use this driver:
28 * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
31 /* SMDK64XX has a 12MHZ crystal attached to WM8580 */
32 #define SMDK64XX_WM8580_FREQ 12000000
34 static int smdk64xx_hw_params(struct snd_pcm_substream *substream,
35 struct snd_pcm_hw_params *params)
37 struct snd_soc_pcm_runtime *rtd = substream->private_data;
38 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
39 struct snd_soc_dai *codec_dai = rtd->codec_dai;
43 switch (params_format(params)) {
44 case SNDRV_PCM_FORMAT_U8:
45 case SNDRV_PCM_FORMAT_S8:
48 case SNDRV_PCM_FORMAT_U16_LE:
49 case SNDRV_PCM_FORMAT_S16_LE:
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.
63 switch (params_rate(params)) {
83 pll_out = params_rate(params) * rfs;
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);
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);
99 ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
100 0, SND_SOC_CLOCK_IN);
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);
110 /* Set WM8580 to drive MCLK from its PLLA */
111 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
116 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
117 SMDK64XX_WM8580_FREQ, pll_out);
121 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
122 pll_out, SND_SOC_CLOCK_IN);
126 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
130 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
138 * SMDK64XX WM8580 DAI operations.
140 static struct snd_soc_ops smdk64xx_ops = {
141 .hw_params = smdk64xx_hw_params,
144 /* SMDK64xx Playback widgets */
145 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
146 SND_SOC_DAPM_HP("Front", NULL),
147 SND_SOC_DAPM_HP("Center+Sub", NULL),
148 SND_SOC_DAPM_HP("Rear", NULL),
151 /* SMDK64xx Capture widgets */
152 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
153 SND_SOC_DAPM_MIC("MicIn", NULL),
154 SND_SOC_DAPM_LINE("LineIn", NULL),
157 /* SMDK-PAIFTX connections */
158 static const struct snd_soc_dapm_route audio_map_tx[] = {
159 /* MicIn feeds AINL */
160 {"AINL", NULL, "MicIn"},
162 /* LineIn feeds AINL/R */
163 {"AINL", NULL, "LineIn"},
164 {"AINR", NULL, "LineIn"},
167 /* SMDK-PAIFRX connections */
168 static const struct snd_soc_dapm_route audio_map_rx[] = {
169 /* Front Left/Right are fed VOUT1L/R */
170 {"Front", NULL, "VOUT1L"},
171 {"Front", NULL, "VOUT1R"},
173 /* Center/Sub are fed VOUT2L/R */
174 {"Center+Sub", NULL, "VOUT2L"},
175 {"Center+Sub", NULL, "VOUT2R"},
177 /* Rear Left/Right are fed VOUT3L/R */
178 {"Rear", NULL, "VOUT3L"},
179 {"Rear", NULL, "VOUT3R"},
182 static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
184 struct snd_soc_codec *codec = rtd->codec;
186 /* Add smdk64xx specific Capture widgets */
187 snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
188 ARRAY_SIZE(wm8580_dapm_widgets_cpt));
190 /* Set up PAIFTX audio path */
191 snd_soc_dapm_add_routes(codec, 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(codec, "MicIn");
198 /* signal a DAPM event */
199 snd_soc_dapm_sync(codec);
204 static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
206 struct snd_soc_codec *codec = rtd->codec;
208 /* Add smdk64xx specific Playback widgets */
209 snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
210 ARRAY_SIZE(wm8580_dapm_widgets_pbk));
212 /* Set up PAIFRX audio path */
213 snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
215 /* signal a DAPM event */
216 snd_soc_dapm_sync(codec);
221 static struct snd_soc_dai_link smdk64xx_dai[] = {
222 { /* Primary Playback i/f */
223 .name = "WM8580 PAIF RX",
224 .stream_name = "Playback",
225 .cpu_dai_name = "s3c64xx-iis-v4",
226 .codec_dai_name = "wm8580-hifi-playback",
227 .platform_name = "s3c24xx-pcm-audio",
228 .codec_name = "wm8580-codec.0-001b",
229 .init = smdk64xx_wm8580_init_paifrx,
230 .ops = &smdk64xx_ops,
232 { /* Primary Capture i/f */
233 .name = "WM8580 PAIF TX",
234 .stream_name = "Capture",
235 .cpu_dai_name = "s3c64xx-iis-v4",
236 .codec_dai_name = "wm8580-hifi-capture",
237 .platform_name = "s3c24xx-pcm-audio",
238 .codec_name = "wm8580-codec.0-001b",
239 .init = smdk64xx_wm8580_init_paiftx,
240 .ops = &smdk64xx_ops,
244 static struct snd_soc_card smdk64xx = {
246 .dai_link = smdk64xx_dai,
247 .num_links = ARRAY_SIZE(smdk64xx_dai),
250 static struct platform_device *smdk64xx_snd_device;
252 static int __init smdk64xx_audio_init(void)
256 smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
257 if (!smdk64xx_snd_device)
260 platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
261 ret = platform_device_add(smdk64xx_snd_device);
264 platform_device_put(smdk64xx_snd_device);
268 module_init(smdk64xx_audio_init);
270 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
271 MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
272 MODULE_LICENSE("GPL");