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 #include <sound/soc-dapm.h> 33 34 #include "ad1980.h" 35 36 static unsigned int ac97_read(struct snd_soc_codec *codec, 37 unsigned int reg); 38 static int ac97_write(struct snd_soc_codec *codec, 39 unsigned int reg, unsigned int val); 40 41 /* 42 * AD1980 register cache 43 */ 44 static const u16 ad1980_reg[] = { 45 0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */ 46 0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */ 47 0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */ 48 0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */ 49 0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */ 50 0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */ 51 0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */ 52 0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */ 53 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 54 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 55 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 56 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 57 0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */ 58 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */ 59 0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */ 60 0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */ 61 }; 62 63 static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line", 64 "Stereo Mix", "Mono Mix", "Phone"}; 65 66 static const struct soc_enum ad1980_cap_src = 67 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel); 68 69 static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = { 70 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 71 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 72 73 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 74 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 75 76 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 77 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 78 79 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0), 80 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1), 81 82 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 83 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 84 85 SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1), 86 SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1), 87 88 SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1), 89 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 90 91 SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0), 92 SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0), 93 94 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1), 95 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1), 96 97 SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1), 98 SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1), 99 100 SOC_ENUM("Capture Source", ad1980_cap_src), 101 102 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0), 103 }; 104 105 static unsigned int ac97_read(struct snd_soc_codec *codec, 106 unsigned int reg) 107 { 108 u16 *cache = codec->reg_cache; 109 110 switch (reg) { 111 case AC97_RESET: 112 case AC97_INT_PAGING: 113 case AC97_POWERDOWN: 114 case AC97_EXTENDED_STATUS: 115 case AC97_VENDOR_ID1: 116 case AC97_VENDOR_ID2: 117 return soc_ac97_ops.read(codec->ac97, reg); 118 default: 119 reg = reg >> 1; 120 121 if (reg >= ARRAY_SIZE(ad1980_reg)) 122 return -EINVAL; 123 124 return cache[reg]; 125 } 126 } 127 128 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 129 unsigned int val) 130 { 131 u16 *cache = codec->reg_cache; 132 133 soc_ac97_ops.write(codec->ac97, reg, val); 134 reg = reg >> 1; 135 if (reg < ARRAY_SIZE(ad1980_reg)) 136 cache[reg] = val; 137 138 return 0; 139 } 140 141 struct snd_soc_dai ad1980_dai = { 142 .name = "AC97", 143 .ac97_control = 1, 144 .playback = { 145 .stream_name = "Playback", 146 .channels_min = 2, 147 .channels_max = 6, 148 .rates = SNDRV_PCM_RATE_48000, 149 .formats = SND_SOC_STD_AC97_FMTS, }, 150 .capture = { 151 .stream_name = "Capture", 152 .channels_min = 2, 153 .channels_max = 2, 154 .rates = SNDRV_PCM_RATE_48000, 155 .formats = SND_SOC_STD_AC97_FMTS, }, 156 }; 157 EXPORT_SYMBOL_GPL(ad1980_dai); 158 159 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm) 160 { 161 u16 retry_cnt = 0; 162 163 retry: 164 if (try_warm && soc_ac97_ops.warm_reset) { 165 soc_ac97_ops.warm_reset(codec->ac97); 166 if (ac97_read(codec, AC97_RESET) == 0x0090) 167 return 1; 168 } 169 170 soc_ac97_ops.reset(codec->ac97); 171 /* Set bit 16slot in register 74h, then every slot will has only 16 172 * bits. This command is sent out in 20bit mode, in which case the 173 * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/ 174 ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); 175 176 if (ac97_read(codec, AC97_RESET) != 0x0090) 177 goto err; 178 return 0; 179 180 err: 181 while (retry_cnt++ < 10) 182 goto retry; 183 184 printk(KERN_ERR "AD1980 AC97 reset failed\n"); 185 return -EIO; 186 } 187 188 static int ad1980_soc_probe(struct platform_device *pdev) 189 { 190 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 191 struct snd_soc_codec *codec; 192 int ret = 0; 193 u16 vendor_id2; 194 u16 ext_status; 195 196 printk(KERN_INFO "AD1980 SoC Audio Codec\n"); 197 198 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 199 if (socdev->card->codec == NULL) 200 return -ENOMEM; 201 codec = socdev->card->codec; 202 mutex_init(&codec->mutex); 203 204 codec->reg_cache = 205 kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL); 206 if (codec->reg_cache == NULL) { 207 ret = -ENOMEM; 208 goto cache_err; 209 } 210 memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \ 211 ARRAY_SIZE(ad1980_reg)); 212 codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg); 213 codec->reg_cache_step = 2; 214 codec->name = "AD1980"; 215 codec->owner = THIS_MODULE; 216 codec->dai = &ad1980_dai; 217 codec->num_dai = 1; 218 codec->write = ac97_write; 219 codec->read = ac97_read; 220 INIT_LIST_HEAD(&codec->dapm_widgets); 221 INIT_LIST_HEAD(&codec->dapm_paths); 222 223 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 224 if (ret < 0) { 225 printk(KERN_ERR "ad1980: failed to register AC97 codec\n"); 226 goto codec_err; 227 } 228 229 /* register pcms */ 230 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 231 if (ret < 0) 232 goto pcm_err; 233 234 235 ret = ad1980_reset(codec, 0); 236 if (ret < 0) { 237 printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n"); 238 goto reset_err; 239 } 240 241 /* Read out vendor ID to make sure it is ad1980 */ 242 if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144) 243 goto reset_err; 244 245 vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2); 246 247 if (vendor_id2 != 0x5370) { 248 if (vendor_id2 != 0x5374) 249 goto reset_err; 250 else 251 printk(KERN_WARNING "ad1980: " 252 "Found AD1981 - only 2/2 IN/OUT Channels " 253 "supported\n"); 254 } 255 256 /* unmute captures and playbacks volume */ 257 ac97_write(codec, AC97_MASTER, 0x0000); 258 ac97_write(codec, AC97_PCM, 0x0000); 259 ac97_write(codec, AC97_REC_GAIN, 0x0000); 260 ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000); 261 ac97_write(codec, AC97_SURROUND_MASTER, 0x0000); 262 263 /*power on LFE/CENTER/Surround DACs*/ 264 ext_status = ac97_read(codec, AC97_EXTENDED_STATUS); 265 ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800); 266 267 snd_soc_add_controls(codec, ad1980_snd_ac97_controls, 268 ARRAY_SIZE(ad1980_snd_ac97_controls)); 269 270 return 0; 271 272 reset_err: 273 snd_soc_free_pcms(socdev); 274 275 pcm_err: 276 snd_soc_free_ac97_codec(codec); 277 278 codec_err: 279 kfree(codec->reg_cache); 280 281 cache_err: 282 kfree(socdev->card->codec); 283 socdev->card->codec = NULL; 284 return ret; 285 } 286 287 static int ad1980_soc_remove(struct platform_device *pdev) 288 { 289 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 290 struct snd_soc_codec *codec = socdev->card->codec; 291 292 if (codec == NULL) 293 return 0; 294 295 snd_soc_dapm_free(socdev); 296 snd_soc_free_pcms(socdev); 297 snd_soc_free_ac97_codec(codec); 298 kfree(codec->reg_cache); 299 kfree(codec); 300 return 0; 301 } 302 303 struct snd_soc_codec_device soc_codec_dev_ad1980 = { 304 .probe = ad1980_soc_probe, 305 .remove = ad1980_soc_remove, 306 }; 307 EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980); 308 309 MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)"); 310 MODULE_AUTHOR("Roy Huang, Cliff Cai"); 311 MODULE_LICENSE("GPL"); 312