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"
22 #include "s3c24xx-pcm.h"
23 #include "s3c64xx-i2s.h"
25 #define S3C64XX_I2S_V4 2
27 /* SMDK64XX has a 12MHZ crystal attached to WM8580 */
28 #define SMDK64XX_WM8580_FREQ 12000000
30 static int smdk64xx_hw_params(struct snd_pcm_substream
*substream
,
31 struct snd_pcm_hw_params
*params
)
33 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
34 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
35 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
39 switch (params_format(params
)) {
40 case SNDRV_PCM_FORMAT_U8
:
41 case SNDRV_PCM_FORMAT_S8
:
44 case SNDRV_PCM_FORMAT_U16_LE
:
45 case SNDRV_PCM_FORMAT_S16_LE
:
52 /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
53 * This criterion can't be met if we request PLL output
54 * as {8000x256, 64000x256, 11025x256}Hz.
55 * As a wayout, we rather change rfs to a minimum value that
56 * results in (params_rate(params) * rfs), and itself, acceptable
57 * to both - the CODEC and the CPU.
59 switch (params_rate(params
)) {
79 pll_out
= params_rate(params
) * rfs
;
81 /* Set the Codec DAI configuration */
82 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
83 | SND_SOC_DAIFMT_NB_NF
84 | SND_SOC_DAIFMT_CBM_CFM
);
88 /* Set the AP DAI configuration */
89 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
90 | SND_SOC_DAIFMT_NB_NF
91 | SND_SOC_DAIFMT_CBM_CFM
);
95 ret
= snd_soc_dai_set_sysclk(cpu_dai
, S3C64XX_CLKSRC_CDCLK
,
100 /* We use PCLK for basic ops in SoC-Slave mode */
101 ret
= snd_soc_dai_set_sysclk(cpu_dai
, S3C64XX_CLKSRC_PCLK
,
102 0, SND_SOC_CLOCK_IN
);
106 /* Set WM8580 to drive MCLK from its PLLA */
107 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM8580_MCLK
,
112 /* Explicitly set WM8580-DAC to source from MCLK */
113 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM8580_DAC_CLKSEL
,
118 ret
= snd_soc_dai_set_pll(codec_dai
, 0, WM8580_PLLA
,
119 SMDK64XX_WM8580_FREQ
, pll_out
);
123 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C_I2SV2_DIV_BCLK
, bfs
);
127 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C_I2SV2_DIV_RCLK
, rfs
);
135 * SMDK64XX WM8580 DAI operations.
137 static struct snd_soc_ops smdk64xx_ops
= {
138 .hw_params
= smdk64xx_hw_params
,
141 /* SMDK64xx Playback widgets */
142 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk
[] = {
143 SND_SOC_DAPM_HP("Front-L/R", NULL
),
144 SND_SOC_DAPM_HP("Center/Sub", NULL
),
145 SND_SOC_DAPM_HP("Rear-L/R", NULL
),
148 /* SMDK64xx Capture widgets */
149 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt
[] = {
150 SND_SOC_DAPM_MIC("MicIn", NULL
),
151 SND_SOC_DAPM_LINE("LineIn", NULL
),
154 /* SMDK-PAIFTX connections */
155 static const struct snd_soc_dapm_route audio_map_tx
[] = {
156 /* MicIn feeds AINL */
157 {"AINL", NULL
, "MicIn"},
159 /* LineIn feeds AINL/R */
160 {"AINL", NULL
, "LineIn"},
161 {"AINR", NULL
, "LineIn"},
164 /* SMDK-PAIFRX connections */
165 static const struct snd_soc_dapm_route audio_map_rx
[] = {
166 /* Front Left/Right are fed VOUT1L/R */
167 {"Front-L/R", NULL
, "VOUT1L"},
168 {"Front-L/R", NULL
, "VOUT1R"},
170 /* Center/Sub are fed VOUT2L/R */
171 {"Center/Sub", NULL
, "VOUT2L"},
172 {"Center/Sub", NULL
, "VOUT2R"},
174 /* Rear Left/Right are fed VOUT3L/R */
175 {"Rear-L/R", NULL
, "VOUT3L"},
176 {"Rear-L/R", NULL
, "VOUT3R"},
179 static int smdk64xx_wm8580_init_paiftx(struct snd_soc_codec
*codec
)
181 /* Add smdk64xx specific Capture widgets */
182 snd_soc_dapm_new_controls(codec
, wm8580_dapm_widgets_cpt
,
183 ARRAY_SIZE(wm8580_dapm_widgets_cpt
));
185 /* Set up PAIFTX audio path */
186 snd_soc_dapm_add_routes(codec
, audio_map_tx
, ARRAY_SIZE(audio_map_tx
));
188 /* Enabling the microphone requires the fitting of a 0R
189 * resistor to connect the line from the microphone jack.
191 snd_soc_dapm_disable_pin(codec
, "MicIn");
193 /* signal a DAPM event */
194 snd_soc_dapm_sync(codec
);
199 static int smdk64xx_wm8580_init_paifrx(struct snd_soc_codec
*codec
)
201 /* Add smdk64xx specific Playback widgets */
202 snd_soc_dapm_new_controls(codec
, wm8580_dapm_widgets_pbk
,
203 ARRAY_SIZE(wm8580_dapm_widgets_pbk
));
205 /* Set up PAIFRX audio path */
206 snd_soc_dapm_add_routes(codec
, audio_map_rx
, ARRAY_SIZE(audio_map_rx
));
208 /* signal a DAPM event */
209 snd_soc_dapm_sync(codec
);
214 static struct snd_soc_dai_link smdk64xx_dai
[] = {
215 { /* Primary Playback i/f */
216 .name
= "WM8580 PAIF RX",
217 .stream_name
= "Playback",
218 .cpu_dai
= &s3c64xx_i2s_dai
[S3C64XX_I2S_V4
],
219 .codec_dai
= &wm8580_dai
[WM8580_DAI_PAIFRX
],
220 .init
= smdk64xx_wm8580_init_paifrx
,
221 .ops
= &smdk64xx_ops
,
223 { /* Primary Capture i/f */
224 .name
= "WM8580 PAIF TX",
225 .stream_name
= "Capture",
226 .cpu_dai
= &s3c64xx_i2s_dai
[S3C64XX_I2S_V4
],
227 .codec_dai
= &wm8580_dai
[WM8580_DAI_PAIFTX
],
228 .init
= smdk64xx_wm8580_init_paiftx
,
229 .ops
= &smdk64xx_ops
,
233 static struct snd_soc_card smdk64xx
= {
235 .platform
= &s3c24xx_soc_platform
,
236 .dai_link
= smdk64xx_dai
,
237 .num_links
= ARRAY_SIZE(smdk64xx_dai
),
240 static struct snd_soc_device smdk64xx_snd_devdata
= {
242 .codec_dev
= &soc_codec_dev_wm8580
,
245 static struct platform_device
*smdk64xx_snd_device
;
247 static int __init
smdk64xx_audio_init(void)
251 smdk64xx_snd_device
= platform_device_alloc("soc-audio", -1);
252 if (!smdk64xx_snd_device
)
255 platform_set_drvdata(smdk64xx_snd_device
, &smdk64xx_snd_devdata
);
256 smdk64xx_snd_devdata
.dev
= &smdk64xx_snd_device
->dev
;
257 ret
= platform_device_add(smdk64xx_snd_device
);
260 platform_device_put(smdk64xx_snd_device
);
264 module_init(smdk64xx_audio_init
);
266 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
267 MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
268 MODULE_LICENSE("GPL");