4 * Copyright (c) 2009 Samsung Electronics Co. Ltd
5 * Author: Jaswinder Singh <jassisinghbrar@gmail.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/module.h>
14 #include <sound/soc.h>
15 #include <sound/pcm_params.h>
17 #include <asm/mach-types.h>
19 #include "../codecs/wm8580.h"
23 * Default CFG switch settings to use this driver:
25 * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
28 /* SMDK has a 12MHZ crystal attached to WM8580 */
29 #define SMDK_WM8580_FREQ 12000000
31 static int smdk_hw_params(struct snd_pcm_substream *substream,
32 struct snd_pcm_hw_params *params)
34 struct snd_soc_pcm_runtime *rtd = substream->private_data;
35 struct snd_soc_dai *codec_dai = rtd->codec_dai;
39 switch (params_width(params)) {
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 WM8580 to drive MCLK from its PLLA */
80 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
85 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
86 SMDK_WM8580_FREQ, pll_out);
90 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
91 pll_out, SND_SOC_CLOCK_IN);
99 * SMDK WM8580 DAI operations.
101 static struct snd_soc_ops smdk_ops = {
102 .hw_params = smdk_hw_params,
105 /* SMDK Playback widgets */
106 static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
107 SND_SOC_DAPM_HP("Front", NULL),
108 SND_SOC_DAPM_HP("Center+Sub", NULL),
109 SND_SOC_DAPM_HP("Rear", NULL),
111 SND_SOC_DAPM_MIC("MicIn", NULL),
112 SND_SOC_DAPM_LINE("LineIn", NULL),
115 /* SMDK-PAIFTX connections */
116 static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
117 /* MicIn feeds AINL */
118 {"AINL", NULL, "MicIn"},
120 /* LineIn feeds AINL/R */
121 {"AINL", NULL, "LineIn"},
122 {"AINR", NULL, "LineIn"},
124 /* Front Left/Right are fed VOUT1L/R */
125 {"Front", NULL, "VOUT1L"},
126 {"Front", NULL, "VOUT1R"},
128 /* Center/Sub are fed VOUT2L/R */
129 {"Center+Sub", NULL, "VOUT2L"},
130 {"Center+Sub", NULL, "VOUT2R"},
132 /* Rear Left/Right are fed VOUT3L/R */
133 {"Rear", NULL, "VOUT3L"},
134 {"Rear", NULL, "VOUT3R"},
137 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
139 /* Enabling the microphone requires the fitting of a 0R
140 * resistor to connect the line from the microphone jack.
142 snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn");
153 #define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
154 SND_SOC_DAIFMT_CBM_CFM)
156 static struct snd_soc_dai_link smdk_dai[] = {
157 [PRI_PLAYBACK] = { /* Primary Playback i/f */
158 .name = "WM8580 PAIF RX",
159 .stream_name = "Playback",
160 .cpu_dai_name = "samsung-i2s.0",
161 .codec_dai_name = "wm8580-hifi-playback",
162 .platform_name = "samsung-i2s.0",
163 .codec_name = "wm8580.0-001b",
164 .dai_fmt = SMDK_DAI_FMT,
167 [PRI_CAPTURE] = { /* Primary Capture i/f */
168 .name = "WM8580 PAIF TX",
169 .stream_name = "Capture",
170 .cpu_dai_name = "samsung-i2s.0",
171 .codec_dai_name = "wm8580-hifi-capture",
172 .platform_name = "samsung-i2s.0",
173 .codec_name = "wm8580.0-001b",
174 .dai_fmt = SMDK_DAI_FMT,
175 .init = smdk_wm8580_init_paiftx,
178 [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
179 .name = "Sec_FIFO TX",
180 .stream_name = "Playback",
181 .cpu_dai_name = "samsung-i2s-sec",
182 .codec_dai_name = "wm8580-hifi-playback",
183 .platform_name = "samsung-i2s-sec",
184 .codec_name = "wm8580.0-001b",
185 .dai_fmt = SMDK_DAI_FMT,
190 static struct snd_soc_card smdk = {
192 .owner = THIS_MODULE,
193 .dai_link = smdk_dai,
196 .dapm_widgets = smdk_wm8580_dapm_widgets,
197 .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
198 .dapm_routes = smdk_wm8580_audio_map,
199 .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
202 static struct platform_device *smdk_snd_device;
204 static int __init smdk_audio_init(void)
209 if (machine_is_smdkc100()
210 || machine_is_smdkv210() || machine_is_smdkc110()) {
212 } else if (machine_is_smdk6410()) {
213 str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
214 str[strlen(str) - 1] = '2';
215 str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
216 str[strlen(str) - 1] = '2';
219 smdk_snd_device = platform_device_alloc("soc-audio", -1);
220 if (!smdk_snd_device)
223 platform_set_drvdata(smdk_snd_device, &smdk);
224 ret = platform_device_add(smdk_snd_device);
227 platform_device_put(smdk_snd_device);
231 module_init(smdk_audio_init);
233 static void __exit smdk_audio_exit(void)
235 platform_device_unregister(smdk_snd_device);
237 module_exit(smdk_audio_exit);
239 MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com");
240 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
241 MODULE_LICENSE("GPL");