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"
25 /* SMDK64XX has a 12MHZ crystal attached to WM8580 */
26 #define SMDK64XX_WM8580_FREQ 12000000
28 static int smdk64xx_hw_params(struct snd_pcm_substream
*substream
,
29 struct snd_pcm_hw_params
*params
)
31 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
32 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
33 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
37 switch (params_format(params
)) {
38 case SNDRV_PCM_FORMAT_U8
:
39 case SNDRV_PCM_FORMAT_S8
:
42 case SNDRV_PCM_FORMAT_U16_LE
:
43 case SNDRV_PCM_FORMAT_S16_LE
:
50 /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
51 * This criterion can't be met if we request PLL output
52 * as {8000x256, 64000x256, 11025x256}Hz.
53 * As a wayout, we rather change rfs to a minimum value that
54 * results in (params_rate(params) * rfs), and itself, acceptable
55 * to both - the CODEC and the CPU.
57 switch (params_rate(params
)) {
77 pll_out
= params_rate(params
) * rfs
;
79 /* Set the Codec DAI configuration */
80 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
81 | SND_SOC_DAIFMT_NB_NF
82 | SND_SOC_DAIFMT_CBM_CFM
);
86 /* Set the AP DAI configuration */
87 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
88 | SND_SOC_DAIFMT_NB_NF
89 | SND_SOC_DAIFMT_CBM_CFM
);
93 ret
= snd_soc_dai_set_sysclk(cpu_dai
, S3C64XX_CLKSRC_CDCLK
,
98 /* We use PCLK for basic ops in SoC-Slave mode */
99 ret
= snd_soc_dai_set_sysclk(cpu_dai
, S3C64XX_CLKSRC_PCLK
,
100 0, SND_SOC_CLOCK_IN
);
104 /* Set WM8580 to drive MCLK from its PLLA */
105 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM8580_MCLK
,
110 /* Explicitly set WM8580-DAC to source from MCLK */
111 ret
= snd_soc_dai_set_clkdiv(codec_dai
, WM8580_DAC_CLKSEL
,
116 ret
= snd_soc_dai_set_pll(codec_dai
, WM8580_PLLA
, 0,
117 SMDK64XX_WM8580_FREQ
, pll_out
);
121 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C_I2SV2_DIV_BCLK
, bfs
);
125 ret
= snd_soc_dai_set_clkdiv(cpu_dai
, S3C_I2SV2_DIV_RCLK
, rfs
);
133 * SMDK64XX WM8580 DAI operations.
135 static struct snd_soc_ops smdk64xx_ops
= {
136 .hw_params
= smdk64xx_hw_params
,
139 /* SMDK64xx Playback widgets */
140 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk
[] = {
141 SND_SOC_DAPM_HP("Front-L/R", NULL
),
142 SND_SOC_DAPM_HP("Center/Sub", NULL
),
143 SND_SOC_DAPM_HP("Rear-L/R", NULL
),
146 /* SMDK64xx Capture widgets */
147 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt
[] = {
148 SND_SOC_DAPM_MIC("MicIn", NULL
),
149 SND_SOC_DAPM_LINE("LineIn", NULL
),
152 /* SMDK-PAIFTX connections */
153 static const struct snd_soc_dapm_route audio_map_tx
[] = {
154 /* MicIn feeds AINL */
155 {"AINL", NULL
, "MicIn"},
157 /* LineIn feeds AINL/R */
158 {"AINL", NULL
, "LineIn"},
159 {"AINR", NULL
, "LineIn"},
162 /* SMDK-PAIFRX connections */
163 static const struct snd_soc_dapm_route audio_map_rx
[] = {
164 /* Front Left/Right are fed VOUT1L/R */
165 {"Front-L/R", NULL
, "VOUT1L"},
166 {"Front-L/R", NULL
, "VOUT1R"},
168 /* Center/Sub are fed VOUT2L/R */
169 {"Center/Sub", NULL
, "VOUT2L"},
170 {"Center/Sub", NULL
, "VOUT2R"},
172 /* Rear Left/Right are fed VOUT3L/R */
173 {"Rear-L/R", NULL
, "VOUT3L"},
174 {"Rear-L/R", NULL
, "VOUT3R"},
177 static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime
*rtd
)
179 struct snd_soc_codec
*codec
= rtd
->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_pcm_runtime
*rtd
)
201 struct snd_soc_codec
*codec
= rtd
->codec
;
203 /* Add smdk64xx specific Playback widgets */
204 snd_soc_dapm_new_controls(codec
, wm8580_dapm_widgets_pbk
,
205 ARRAY_SIZE(wm8580_dapm_widgets_pbk
));
207 /* Set up PAIFRX audio path */
208 snd_soc_dapm_add_routes(codec
, audio_map_rx
, ARRAY_SIZE(audio_map_rx
));
210 /* signal a DAPM event */
211 snd_soc_dapm_sync(codec
);
216 static struct snd_soc_dai_link smdk64xx_dai
[] = {
217 { /* Primary Playback i/f */
218 .name
= "WM8580 PAIF RX",
219 .stream_name
= "Playback",
220 .cpu_dai_name
= "s3c64xx-iis-v4",
221 .codec_dai_name
= "wm8580-hifi-playback",
222 .platform_name
= "s3c24xx-pcm-audio",
223 .codec_name
= "wm8580-codec.0-001b",
224 .init
= smdk64xx_wm8580_init_paifrx
,
225 .ops
= &smdk64xx_ops
,
227 { /* Primary Capture i/f */
228 .name
= "WM8580 PAIF TX",
229 .stream_name
= "Capture",
230 .cpu_dai_name
= "s3c64xx-iis-v4",
231 .codec_dai_name
= "wm8580-hifi-capture",
232 .platform_name
= "s3c24xx-pcm-audio",
233 .codec_name
= "wm8580-codec.0-001b",
234 .init
= smdk64xx_wm8580_init_paiftx
,
235 .ops
= &smdk64xx_ops
,
239 static struct snd_soc_card smdk64xx
= {
241 .dai_link
= smdk64xx_dai
,
242 .num_links
= ARRAY_SIZE(smdk64xx_dai
),
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
);
256 ret
= platform_device_add(smdk64xx_snd_device
);
259 platform_device_put(smdk64xx_snd_device
);
263 module_init(smdk64xx_audio_init
);
265 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
266 MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
267 MODULE_LICENSE("GPL");