1 /* 2 * ad1980.c -- ALSA Soc AD1980 codec support 3 * 4 * Copyright: Analog Device Inc. 5 * Author: Roy Huang <roy.huang@analog.com> 6 * Cliff Cai <cliff.cai@analog.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 */ 13 14 /* 15 * WARNING: 16 * 17 * Because Analog Devices Inc. discontinued the ad1980 sound chip since 18 * Sep. 2009, this ad1980 driver is not maintained, tested and supported 19 * by ADI now. 20 */ 21 22 #include <linux/init.h> 23 #include <linux/slab.h> 24 #include <linux/module.h> 25 #include <linux/kernel.h> 26 #include <linux/device.h> 27 #include <sound/core.h> 28 #include <sound/pcm.h> 29 #include <sound/ac97_codec.h> 30 #include <sound/initval.h> 31 #include <sound/soc.h> 32 33 #include "ad1980.h" 34 35 /* 36 * AD1980 register cache 37 */ 38 static const u16 ad1980_reg[] = { 39 0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */ 40 0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */ 41 0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */ 42 0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */ 43 0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */ 44 0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */ 45 0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */ 46 0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */ 47 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 48 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 49 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 50 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 51 0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */ 52 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 53 0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */ 54 0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */ 55 }; 56 57 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line", 58 "Stereo Mix", "Mono Mix", "Phone"}; 59 60 static const struct soc_enum ad1980_cap_src = 61 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel); 62 63 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = { 64 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 65 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 66 67 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 68 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 69 70 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 71 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 72 73 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0), 74 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1), 75 76 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 77 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 78 79 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1), 80 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1), 81 82 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1), 83 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 84 85 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0), 86 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0), 87 88 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1), 89 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1), 90 91 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1), 92 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1), 93 94 SOC_ENUM("Capture Source", ad1980_cap_src), 95 96 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0), 97 }; 98 99 static unsigned int ac97_read(struct snd_soc_codec *codec, 100 unsigned int reg) 101 { 102 u16 *cache = codec->reg_cache; 103 104 switch (reg) { 105 case AC97_RESET: 106 case AC97_INT_PAGING: 107 case AC97_POWERDOWN: 108 case AC97_EXTENDED_STATUS: 109 case AC97_VENDOR_ID1: 110 case AC97_VENDOR_ID2: 111 return soc_ac97_ops.read(codec->ac97, reg); 112 default: 113 reg = reg >> 1; 114 115 if (reg >= ARRAY_SIZE(ad1980_reg)) 116 return -EINVAL; 117 118 return cache[reg]; 119 } 120 } 121 122 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 123 unsigned int val) 124 { 125 u16 *cache = codec->reg_cache; 126 127 soc_ac97_ops.write(codec->ac97, reg, val); 128 reg = reg >> 1; 129 if (reg < ARRAY_SIZE(ad1980_reg)) 130 cache[reg] = val; 131 132 return 0; 133 } 134 135 static struct snd_soc_dai_driver ad1980_dai = { 136 .name = "ad1980-hifi", 137 .ac97_control = 1, 138 .playback = { 139 .stream_name = "Playback", 140 .channels_min = 2, 141 .channels_max = 6, 142 .rates = SNDRV_PCM_RATE_48000, 143 .formats = SND_SOC_STD_AC97_FMTS, }, 144 .capture = { 145 .stream_name = "Capture", 146 .channels_min = 2, 147 .channels_max = 2, 148 .rates = SNDRV_PCM_RATE_48000, 149 .formats = SND_SOC_STD_AC97_FMTS, }, 150 }; 151 152 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm) 153 { 154 u16 retry_cnt = 0; 155 156 retry: 157 if (try_warm && soc_ac97_ops.warm_reset) { 158 soc_ac97_ops.warm_reset(codec->ac97); 159 if (ac97_read(codec, AC97_RESET) == 0x0090) 160 return 1; 161 } 162 163 soc_ac97_ops.reset(codec->ac97); 164 /* Set bit 16slot in register 74h, then every slot will has only 16 165 * bits. This command is sent out in 20bit mode, in which case the 166 * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/ 167 ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); 168 169 if (ac97_read(codec, AC97_RESET) != 0x0090) 170 goto err; 171 return 0; 172 173 err: 174 while (retry_cnt++ < 10) 175 goto retry; 176 177 printk(KERN_ERR "AD1980 AC97 reset failed\n"); 178 return -EIO; 179 } 180 181 static int ad1980_soc_probe(struct snd_soc_codec *codec) 182 { 183 int ret; 184 u16 vendor_id2; 185 u16 ext_status; 186 187 printk(KERN_INFO "AD1980 SoC Audio Codec\n"); 188 189 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 190 if (ret < 0) { 191 printk(KERN_ERR "ad1980: failed to register AC97 codec\n"); 192 return ret; 193 } 194 195 ret = ad1980_reset(codec, 0); 196 if (ret < 0) { 197 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n"); 198 goto reset_err; 199 } 200 201 /* Read out vendor ID to make sure it is ad1980 */ 202 if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144) { 203 ret = -ENODEV; 204 goto reset_err; 205 } 206 207 vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2); 208 209 if (vendor_id2 != 0x5370) { 210 if (vendor_id2 != 0x5374) { 211 ret = -ENODEV; 212 goto reset_err; 213 } else { 214 printk(KERN_WARNING "ad1980: " 215 "Found AD1981 - only 2/2 IN/OUT Channels " 216 "supported\n"); 217 } 218 } 219 220 /* unmute captures and playbacks volume */ 221 ac97_write(codec, AC97_MASTER, 0x0000); 222 ac97_write(codec, AC97_PCM, 0x0000); 223 ac97_write(codec, AC97_REC_GAIN, 0x0000); 224 ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000); 225 ac97_write(codec, AC97_SURROUND_MASTER, 0x0000); 226 227 /*power on LFE/CENTER/Surround DACs*/ 228 ext_status = ac97_read(codec, AC97_EXTENDED_STATUS); 229 ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800); 230 231 snd_soc_add_controls(codec, ad1980_snd_ac97_controls, 232 ARRAY_SIZE(ad1980_snd_ac97_controls)); 233 234 return 0; 235 236 reset_err: 237 snd_soc_free_ac97_codec(codec); 238 return ret; 239 } 240 241 static int ad1980_soc_remove(struct snd_soc_codec *codec) 242 { 243 snd_soc_free_ac97_codec(codec); 244 return 0; 245 } 246 247 static struct snd_soc_codec_driver soc_codec_dev_ad1980 = { 248 .probe = ad1980_soc_probe, 249 .remove = ad1980_soc_remove, 250 .reg_cache_size = ARRAY_SIZE(ad1980_reg), 251 .reg_word_size = sizeof(u16), 252 .reg_cache_default = ad1980_reg, 253 .reg_cache_step = 2, 254 .write = ac97_write, 255 .read = ac97_read, 256 }; 257 258 static __devinit int ad1980_probe(struct platform_device *pdev) 259 { 260 return snd_soc_register_codec(&pdev->dev, 261 &soc_codec_dev_ad1980, &ad1980_dai, 1); 262 } 263 264 static int __devexit ad1980_remove(struct platform_device *pdev) 265 { 266 snd_soc_unregister_codec(&pdev->dev); 267 return 0; 268 } 269 270 static struct platform_driver ad1980_codec_driver = { 271 .driver = { 272 .name = "ad1980", 273 .owner = THIS_MODULE, 274 }, 275 276 .probe = ad1980_probe, 277 .remove = __devexit_p(ad1980_remove), 278 }; 279 280 module_platform_driver(ad1980_codec_driver); 281 282 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)"); 283 MODULE_AUTHOR("Roy Huang, Cliff Cai"); 284 MODULE_LICENSE("GPL"); 285