308 lines
8.2 KiB
C
308 lines
8.2 KiB
C
/*
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* ad1980.c -- ALSA Soc AD1980 codec support
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*
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* Copyright: Analog Device Inc.
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* Author: Roy Huang <roy.huang@analog.com>
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* Cliff Cai <cliff.cai@analog.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "ad1980.h"
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static unsigned int ac97_read(struct snd_soc_codec *codec,
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unsigned int reg);
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static int ac97_write(struct snd_soc_codec *codec,
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unsigned int reg, unsigned int val);
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/*
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* AD1980 register cache
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*/
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static const u16 ad1980_reg[] = {
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0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */
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0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */
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0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
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0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
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0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
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0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
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0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
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0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
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0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
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0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
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0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
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0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
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0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
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0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
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0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
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0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */
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};
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static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
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"Stereo Mix", "Mono Mix", "Phone"};
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static const struct soc_enum ad1980_cap_src =
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SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);
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static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
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SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
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SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
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SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
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SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
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SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
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SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
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SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
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SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
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SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
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SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
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SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
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SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
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SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
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SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
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SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
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SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
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SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
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SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
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SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
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SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
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SOC_ENUM("Capture Source", ad1980_cap_src),
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SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
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};
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static unsigned int ac97_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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switch (reg) {
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case AC97_RESET:
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case AC97_INT_PAGING:
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case AC97_POWERDOWN:
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case AC97_EXTENDED_STATUS:
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case AC97_VENDOR_ID1:
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case AC97_VENDOR_ID2:
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return soc_ac97_ops.read(codec->ac97, reg);
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default:
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reg = reg >> 1;
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if (reg >= ARRAY_SIZE(ad1980_reg))
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return -EINVAL;
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return cache[reg];
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}
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}
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static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int val)
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{
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u16 *cache = codec->reg_cache;
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soc_ac97_ops.write(codec->ac97, reg, val);
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reg = reg >> 1;
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if (reg < ARRAY_SIZE(ad1980_reg))
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cache[reg] = val;
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return 0;
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}
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struct snd_soc_dai ad1980_dai = {
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.name = "AC97",
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.ac97_control = 1,
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 6,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SND_SOC_STD_AC97_FMTS, },
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SND_SOC_STD_AC97_FMTS, },
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};
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EXPORT_SYMBOL_GPL(ad1980_dai);
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static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
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{
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u16 retry_cnt = 0;
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retry:
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if (try_warm && soc_ac97_ops.warm_reset) {
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soc_ac97_ops.warm_reset(codec->ac97);
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if (ac97_read(codec, AC97_RESET) == 0x0090)
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return 1;
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}
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soc_ac97_ops.reset(codec->ac97);
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/* Set bit 16slot in register 74h, then every slot will has only 16
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* bits. This command is sent out in 20bit mode, in which case the
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* first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
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ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
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if (ac97_read(codec, AC97_RESET) != 0x0090)
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goto err;
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return 0;
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err:
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while (retry_cnt++ < 10)
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goto retry;
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printk(KERN_ERR "AD1980 AC97 reset failed\n");
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return -EIO;
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}
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static int ad1980_soc_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec;
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int ret = 0;
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u16 vendor_id2;
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u16 ext_status;
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printk(KERN_INFO "AD1980 SoC Audio Codec\n");
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socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
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if (socdev->card->codec == NULL)
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return -ENOMEM;
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codec = socdev->card->codec;
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mutex_init(&codec->mutex);
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codec->reg_cache =
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kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL);
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if (codec->reg_cache == NULL) {
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ret = -ENOMEM;
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goto cache_err;
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}
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memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \
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ARRAY_SIZE(ad1980_reg));
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codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg);
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codec->reg_cache_step = 2;
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codec->name = "AD1980";
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codec->owner = THIS_MODULE;
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codec->dai = &ad1980_dai;
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codec->num_dai = 1;
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codec->write = ac97_write;
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codec->read = ac97_read;
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
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if (ret < 0) {
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printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
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goto codec_err;
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}
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0)
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goto pcm_err;
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ret = ad1980_reset(codec, 0);
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if (ret < 0) {
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printk(KERN_ERR "Failed to reset AD1980: AC97 link error\n");
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goto reset_err;
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}
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/* Read out vendor ID to make sure it is ad1980 */
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if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
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goto reset_err;
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vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);
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if (vendor_id2 != 0x5370) {
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if (vendor_id2 != 0x5374)
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goto reset_err;
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else
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printk(KERN_WARNING "ad1980: "
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"Found AD1981 - only 2/2 IN/OUT Channels "
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"supported\n");
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}
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/* unmute captures and playbacks volume */
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ac97_write(codec, AC97_MASTER, 0x0000);
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ac97_write(codec, AC97_PCM, 0x0000);
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ac97_write(codec, AC97_REC_GAIN, 0x0000);
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ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
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ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
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/*power on LFE/CENTER/Surround DACs*/
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ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
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ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
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snd_soc_add_controls(codec, ad1980_snd_ac97_controls,
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ARRAY_SIZE(ad1980_snd_ac97_controls));
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ret = snd_soc_init_card(socdev);
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if (ret < 0) {
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printk(KERN_ERR "ad1980: failed to register card\n");
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goto reset_err;
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}
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return 0;
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reset_err:
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snd_soc_free_pcms(socdev);
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pcm_err:
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snd_soc_free_ac97_codec(codec);
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codec_err:
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kfree(codec->reg_cache);
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cache_err:
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kfree(socdev->card->codec);
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socdev->card->codec = NULL;
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return ret;
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}
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static int ad1980_soc_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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if (codec == NULL)
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return 0;
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snd_soc_dapm_free(socdev);
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snd_soc_free_pcms(socdev);
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snd_soc_free_ac97_codec(codec);
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kfree(codec->reg_cache);
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kfree(codec);
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_ad1980 = {
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.probe = ad1980_soc_probe,
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.remove = ad1980_soc_remove,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);
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MODULE_DESCRIPTION("ASoC ad1980 driver");
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MODULE_AUTHOR("Roy Huang, Cliff Cai");
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MODULE_LICENSE("GPL");
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