1/* 2 * smdk_wm8580.c 3 * 4 * Copyright (c) 2009 Samsung Electronics Co. Ltd 5 * Author: Jaswinder Singh <jassisinghbrar@gmail.com> 6 * 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. 11 */ 12 13#include <linux/module.h> 14#include <sound/soc.h> 15#include <sound/pcm_params.h> 16 17#include <asm/mach-types.h> 18 19#include "../codecs/wm8580.h" 20#include "i2s.h" 21 22/* 23 * Default CFG switch settings to use this driver: 24 * 25 * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On 26 */ 27 28/* SMDK has a 12MHZ crystal attached to WM8580 */ 29#define SMDK_WM8580_FREQ 12000000 30 31static int smdk_hw_params(struct snd_pcm_substream *substream, 32 struct snd_pcm_hw_params *params) 33{ 34 struct snd_soc_pcm_runtime *rtd = substream->private_data; 35 struct snd_soc_dai *codec_dai = rtd->codec_dai; 36 unsigned int pll_out; 37 int bfs, rfs, ret; 38 39 switch (params_width(params)) { 40 case 8: 41 bfs = 16; 42 break; 43 case 16: 44 bfs = 32; 45 break; 46 default: 47 return -EINVAL; 48 } 49 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. 56 */ 57 switch (params_rate(params)) { 58 case 16000: 59 case 22050: 60 case 32000: 61 case 44100: 62 case 48000: 63 case 88200: 64 case 96000: 65 rfs = 256; 66 break; 67 case 64000: 68 rfs = 384; 69 break; 70 case 8000: 71 case 11025: 72 rfs = 512; 73 break; 74 default: 75 return -EINVAL; 76 } 77 pll_out = params_rate(params) * rfs; 78 79 /* Set WM8580 to drive MCLK from its PLLA */ 80 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, 81 WM8580_CLKSRC_PLLA); 82 if (ret < 0) 83 return ret; 84 85 ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, 86 SMDK_WM8580_FREQ, pll_out); 87 if (ret < 0) 88 return ret; 89 90 ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, 91 pll_out, SND_SOC_CLOCK_IN); 92 if (ret < 0) 93 return ret; 94 95 return 0; 96} 97 98/* 99 * SMDK WM8580 DAI operations. 100 */ 101static struct snd_soc_ops smdk_ops = { 102 .hw_params = smdk_hw_params, 103}; 104 105/* SMDK Playback widgets */ 106static 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), 110 111 SND_SOC_DAPM_MIC("MicIn", NULL), 112 SND_SOC_DAPM_LINE("LineIn", NULL), 113}; 114 115/* SMDK-PAIFTX connections */ 116static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = { 117 /* MicIn feeds AINL */ 118 {"AINL", NULL, "MicIn"}, 119 120 /* LineIn feeds AINL/R */ 121 {"AINL", NULL, "LineIn"}, 122 {"AINR", NULL, "LineIn"}, 123 124 /* Front Left/Right are fed VOUT1L/R */ 125 {"Front", NULL, "VOUT1L"}, 126 {"Front", NULL, "VOUT1R"}, 127 128 /* Center/Sub are fed VOUT2L/R */ 129 {"Center+Sub", NULL, "VOUT2L"}, 130 {"Center+Sub", NULL, "VOUT2R"}, 131 132 /* Rear Left/Right are fed VOUT3L/R */ 133 {"Rear", NULL, "VOUT3L"}, 134 {"Rear", NULL, "VOUT3R"}, 135}; 136 137static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) 138{ 139 /* Enabling the microphone requires the fitting of a 0R 140 * resistor to connect the line from the microphone jack. 141 */ 142 snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn"); 143 144 return 0; 145} 146 147enum { 148 PRI_PLAYBACK = 0, 149 PRI_CAPTURE, 150 SEC_PLAYBACK, 151}; 152 153#define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ 154 SND_SOC_DAIFMT_CBM_CFM) 155 156static 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, 165 .ops = &smdk_ops, 166 }, 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, 176 .ops = &smdk_ops, 177 }, 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, 186 .ops = &smdk_ops, 187 }, 188}; 189 190static struct snd_soc_card smdk = { 191 .name = "SMDK-I2S", 192 .owner = THIS_MODULE, 193 .dai_link = smdk_dai, 194 .num_links = 2, 195 196 .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), 200}; 201 202static struct platform_device *smdk_snd_device; 203 204static int __init smdk_audio_init(void) 205{ 206 int ret; 207 char *str; 208 209 if (machine_is_smdkc100() 210 || machine_is_smdkv210() || machine_is_smdkc110()) { 211 smdk.num_links = 3; 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'; 217 } 218 219 smdk_snd_device = platform_device_alloc("soc-audio", -1); 220 if (!smdk_snd_device) 221 return -ENOMEM; 222 223 platform_set_drvdata(smdk_snd_device, &smdk); 224 ret = platform_device_add(smdk_snd_device); 225 226 if (ret) 227 platform_device_put(smdk_snd_device); 228 229 return ret; 230} 231module_init(smdk_audio_init); 232 233static void __exit smdk_audio_exit(void) 234{ 235 platform_device_unregister(smdk_snd_device); 236} 237module_exit(smdk_audio_exit); 238 239MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com"); 240MODULE_DESCRIPTION("ALSA SoC SMDK WM8580"); 241MODULE_LICENSE("GPL"); 242