630 lines
16 KiB
C
630 lines
16 KiB
C
/*
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* uda134x.c -- UDA134X ALSA SoC Codec driver
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*
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* Modifications by Christian Pellegrin <chripell@evolware.org>
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*
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* Copyright 2007 Dension Audio Systems Ltd.
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* Author: Zoltan Devai
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*
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* Based on the WM87xx drivers by Liam Girdwood and Richard Purdie
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/uda134x.h>
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#include <sound/l3.h>
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#include "uda134x.h"
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#define UDA134X_RATES SNDRV_PCM_RATE_8000_48000
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#define UDA134X_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S20_3LE)
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struct uda134x_priv {
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int sysclk;
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int dai_fmt;
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struct snd_pcm_substream *master_substream;
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struct snd_pcm_substream *slave_substream;
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};
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/* In-data addresses are hard-coded into the reg-cache values */
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static const char uda134x_reg[UDA134X_REGS_NUM] = {
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/* Extended address registers */
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0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00,
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/* Status, data regs */
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0x00, 0x83, 0x00, 0x40, 0x80, 0xC0, 0x00,
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};
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/*
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* The codec has no support for reading its registers except for peak level...
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*/
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static inline unsigned int uda134x_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u8 *cache = codec->reg_cache;
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if (reg >= UDA134X_REGS_NUM)
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return -1;
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return cache[reg];
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}
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/*
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* Write the register cache
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*/
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static inline void uda134x_write_reg_cache(struct snd_soc_codec *codec,
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u8 reg, unsigned int value)
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{
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u8 *cache = codec->reg_cache;
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if (reg >= UDA134X_REGS_NUM)
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return;
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cache[reg] = value;
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}
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/*
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* Write to the uda134x registers
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*
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*/
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static int uda134x_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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int ret;
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u8 addr;
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u8 data = value;
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struct uda134x_platform_data *pd = codec->control_data;
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pr_debug("%s reg: %02X, value:%02X\n", __func__, reg, value);
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if (reg >= UDA134X_REGS_NUM) {
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printk(KERN_ERR "%s unknown register: reg: %u",
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__func__, reg);
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return -EINVAL;
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}
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uda134x_write_reg_cache(codec, reg, value);
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switch (reg) {
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case UDA134X_STATUS0:
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case UDA134X_STATUS1:
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addr = UDA134X_STATUS_ADDR;
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break;
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case UDA134X_DATA000:
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case UDA134X_DATA001:
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case UDA134X_DATA010:
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case UDA134X_DATA011:
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addr = UDA134X_DATA0_ADDR;
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break;
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case UDA134X_DATA1:
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addr = UDA134X_DATA1_ADDR;
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break;
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default:
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/* It's an extended address register */
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addr = (reg | UDA134X_EXTADDR_PREFIX);
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ret = l3_write(&pd->l3,
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UDA134X_DATA0_ADDR, &addr, 1);
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if (ret != 1)
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return -EIO;
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addr = UDA134X_DATA0_ADDR;
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data = (value | UDA134X_EXTDATA_PREFIX);
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break;
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}
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ret = l3_write(&pd->l3,
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addr, &data, 1);
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if (ret != 1)
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return -EIO;
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return 0;
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}
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static inline void uda134x_reset(struct snd_soc_codec *codec)
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{
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u8 reset_reg = uda134x_read_reg_cache(codec, UDA134X_STATUS0);
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uda134x_write(codec, UDA134X_STATUS0, reset_reg | (1<<6));
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msleep(1);
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uda134x_write(codec, UDA134X_STATUS0, reset_reg & ~(1<<6));
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}
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static int uda134x_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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u8 mute_reg = uda134x_read_reg_cache(codec, UDA134X_DATA010);
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pr_debug("%s mute: %d\n", __func__, mute);
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if (mute)
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mute_reg |= (1<<2);
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else
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mute_reg &= ~(1<<2);
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uda134x_write(codec, UDA134X_DATA010, mute_reg);
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return 0;
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}
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static int uda134x_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
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struct snd_pcm_runtime *master_runtime;
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if (uda134x->master_substream) {
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master_runtime = uda134x->master_substream->runtime;
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pr_debug("%s constraining to %d bits at %d\n", __func__,
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master_runtime->sample_bits,
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master_runtime->rate);
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snd_pcm_hw_constraint_minmax(substream->runtime,
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SNDRV_PCM_HW_PARAM_RATE,
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master_runtime->rate,
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master_runtime->rate);
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snd_pcm_hw_constraint_minmax(substream->runtime,
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SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
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master_runtime->sample_bits,
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master_runtime->sample_bits);
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uda134x->slave_substream = substream;
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} else
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uda134x->master_substream = substream;
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return 0;
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}
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static void uda134x_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
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if (uda134x->master_substream == substream)
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uda134x->master_substream = uda134x->slave_substream;
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uda134x->slave_substream = NULL;
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}
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static int uda134x_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->codec;
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struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
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u8 hw_params;
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if (substream == uda134x->slave_substream) {
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pr_debug("%s ignoring hw_params for slave substream\n",
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__func__);
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return 0;
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}
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hw_params = uda134x_read_reg_cache(codec, UDA134X_STATUS0);
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hw_params &= STATUS0_SYSCLK_MASK;
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hw_params &= STATUS0_DAIFMT_MASK;
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pr_debug("%s sysclk: %d, rate:%d\n", __func__,
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uda134x->sysclk, params_rate(params));
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/* set SYSCLK / fs ratio */
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switch (uda134x->sysclk / params_rate(params)) {
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case 512:
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break;
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case 384:
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hw_params |= (1<<4);
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break;
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case 256:
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hw_params |= (1<<5);
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break;
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default:
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printk(KERN_ERR "%s unsupported fs\n", __func__);
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return -EINVAL;
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}
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pr_debug("%s dai_fmt: %d, params_format:%d\n", __func__,
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uda134x->dai_fmt, params_format(params));
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/* set DAI format and word length */
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switch (uda134x->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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hw_params |= (1<<1);
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break;
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case SNDRV_PCM_FORMAT_S18_3LE:
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hw_params |= (1<<2);
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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hw_params |= ((1<<2) | (1<<1));
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break;
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default:
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printk(KERN_ERR "%s unsupported format (right)\n",
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__func__);
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return -EINVAL;
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}
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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hw_params |= (1<<3);
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break;
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default:
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printk(KERN_ERR "%s unsupported format\n", __func__);
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return -EINVAL;
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}
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uda134x_write(codec, UDA134X_STATUS0, hw_params);
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return 0;
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}
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static int uda134x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
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pr_debug("%s clk_id: %d, freq: %u, dir: %d\n", __func__,
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clk_id, freq, dir);
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/* Anything between 256fs*8Khz and 512fs*48Khz should be acceptable
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because the codec is slave. Of course limitations of the clock
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master (the IIS controller) apply.
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We'll error out on set_hw_params if it's not OK */
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if ((freq >= (256 * 8000)) && (freq <= (512 * 48000))) {
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uda134x->sysclk = freq;
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return 0;
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}
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printk(KERN_ERR "%s unsupported sysclk\n", __func__);
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return -EINVAL;
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}
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static int uda134x_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
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pr_debug("%s fmt: %08X\n", __func__, fmt);
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/* codec supports only full slave mode */
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if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
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printk(KERN_ERR "%s unsupported slave mode\n", __func__);
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return -EINVAL;
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}
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/* no support for clock inversion */
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if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) {
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printk(KERN_ERR "%s unsupported clock inversion\n", __func__);
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return -EINVAL;
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}
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/* We can't setup DAI format here as it depends on the word bit num */
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/* so let's just store the value for later */
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uda134x->dai_fmt = fmt;
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return 0;
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}
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static int uda134x_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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u8 reg;
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struct uda134x_platform_data *pd = codec->control_data;
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int i;
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u8 *cache = codec->reg_cache;
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pr_debug("%s bias level %d\n", __func__, level);
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switch (level) {
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case SND_SOC_BIAS_ON:
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/* ADC, DAC on */
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switch (pd->model) {
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case UDA134X_UDA1340:
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case UDA134X_UDA1344:
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case UDA134X_UDA1345:
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reg = uda134x_read_reg_cache(codec, UDA134X_DATA011);
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uda134x_write(codec, UDA134X_DATA011, reg | 0x03);
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break;
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case UDA134X_UDA1341:
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reg = uda134x_read_reg_cache(codec, UDA134X_STATUS1);
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uda134x_write(codec, UDA134X_STATUS1, reg | 0x03);
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break;
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default:
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printk(KERN_ERR "UDA134X SoC codec: "
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"unsupported model %d\n", pd->model);
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return -EINVAL;
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}
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break;
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case SND_SOC_BIAS_PREPARE:
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/* power on */
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if (pd->power) {
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pd->power(1);
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/* Sync reg_cache with the hardware */
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for (i = 0; i < ARRAY_SIZE(uda134x_reg); i++)
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codec->driver->write(codec, i, *cache++);
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}
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break;
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case SND_SOC_BIAS_STANDBY:
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/* ADC, DAC power off */
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switch (pd->model) {
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case UDA134X_UDA1340:
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case UDA134X_UDA1344:
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case UDA134X_UDA1345:
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reg = uda134x_read_reg_cache(codec, UDA134X_DATA011);
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uda134x_write(codec, UDA134X_DATA011, reg & ~(0x03));
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break;
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case UDA134X_UDA1341:
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reg = uda134x_read_reg_cache(codec, UDA134X_STATUS1);
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uda134x_write(codec, UDA134X_STATUS1, reg & ~(0x03));
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break;
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default:
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printk(KERN_ERR "UDA134X SoC codec: "
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"unsupported model %d\n", pd->model);
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return -EINVAL;
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}
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break;
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case SND_SOC_BIAS_OFF:
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/* power off */
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if (pd->power)
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pd->power(0);
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break;
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}
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codec->dapm.bias_level = level;
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return 0;
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}
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static const char *uda134x_dsp_setting[] = {"Flat", "Minimum1",
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"Minimum2", "Maximum"};
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static const char *uda134x_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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static const char *uda134x_mixmode[] = {"Differential", "Analog1",
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"Analog2", "Both"};
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static const struct soc_enum uda134x_mixer_enum[] = {
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SOC_ENUM_SINGLE(UDA134X_DATA010, 0, 0x04, uda134x_dsp_setting),
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SOC_ENUM_SINGLE(UDA134X_DATA010, 3, 0x04, uda134x_deemph),
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SOC_ENUM_SINGLE(UDA134X_EA010, 0, 0x04, uda134x_mixmode),
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};
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static const struct snd_kcontrol_new uda1341_snd_controls[] = {
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SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
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SOC_SINGLE("Capture Volume", UDA134X_EA010, 2, 0x07, 0),
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SOC_SINGLE("Analog1 Volume", UDA134X_EA000, 0, 0x1F, 1),
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SOC_SINGLE("Analog2 Volume", UDA134X_EA001, 0, 0x1F, 1),
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SOC_SINGLE("Mic Sensitivity", UDA134X_EA010, 2, 7, 0),
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SOC_SINGLE("Mic Volume", UDA134X_EA101, 0, 0x1F, 0),
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SOC_SINGLE("Tone Control - Bass", UDA134X_DATA001, 2, 0xF, 0),
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SOC_SINGLE("Tone Control - Treble", UDA134X_DATA001, 0, 3, 0),
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SOC_ENUM("Sound Processing Filter", uda134x_mixer_enum[0]),
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SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
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SOC_ENUM("Input Mux", uda134x_mixer_enum[2]),
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SOC_SINGLE("AGC Switch", UDA134X_EA100, 4, 1, 0),
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SOC_SINGLE("AGC Target Volume", UDA134X_EA110, 0, 0x03, 1),
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SOC_SINGLE("AGC Timing", UDA134X_EA110, 2, 0x07, 0),
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SOC_SINGLE("DAC +6dB Switch", UDA134X_STATUS1, 6, 1, 0),
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SOC_SINGLE("ADC +6dB Switch", UDA134X_STATUS1, 5, 1, 0),
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SOC_SINGLE("ADC Polarity Switch", UDA134X_STATUS1, 4, 1, 0),
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SOC_SINGLE("DAC Polarity Switch", UDA134X_STATUS1, 3, 1, 0),
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SOC_SINGLE("Double Speed Playback Switch", UDA134X_STATUS1, 2, 1, 0),
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SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
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};
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static const struct snd_kcontrol_new uda1340_snd_controls[] = {
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SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
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SOC_SINGLE("Tone Control - Bass", UDA134X_DATA001, 2, 0xF, 0),
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SOC_SINGLE("Tone Control - Treble", UDA134X_DATA001, 0, 3, 0),
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SOC_ENUM("Sound Processing Filter", uda134x_mixer_enum[0]),
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SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
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SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
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};
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static const struct snd_kcontrol_new uda1345_snd_controls[] = {
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SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
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SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
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SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
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};
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static const struct snd_soc_dai_ops uda134x_dai_ops = {
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.startup = uda134x_startup,
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.shutdown = uda134x_shutdown,
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.hw_params = uda134x_hw_params,
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.digital_mute = uda134x_mute,
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.set_sysclk = uda134x_set_dai_sysclk,
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.set_fmt = uda134x_set_dai_fmt,
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};
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static struct snd_soc_dai_driver uda134x_dai = {
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.name = "uda134x-hifi",
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/* playback capabilities */
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = UDA134X_RATES,
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.formats = UDA134X_FORMATS,
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},
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/* capture capabilities */
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = UDA134X_RATES,
|
|
.formats = UDA134X_FORMATS,
|
|
},
|
|
/* pcm operations */
|
|
.ops = &uda134x_dai_ops,
|
|
};
|
|
|
|
static int uda134x_soc_probe(struct snd_soc_codec *codec)
|
|
{
|
|
struct uda134x_priv *uda134x;
|
|
struct uda134x_platform_data *pd = codec->card->dev->platform_data;
|
|
|
|
int ret;
|
|
|
|
printk(KERN_INFO "UDA134X SoC Audio Codec\n");
|
|
|
|
if (!pd) {
|
|
printk(KERN_ERR "UDA134X SoC codec: "
|
|
"missing L3 bitbang function\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
switch (pd->model) {
|
|
case UDA134X_UDA1340:
|
|
case UDA134X_UDA1341:
|
|
case UDA134X_UDA1344:
|
|
case UDA134X_UDA1345:
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "UDA134X SoC codec: "
|
|
"unsupported model %d\n",
|
|
pd->model);
|
|
return -EINVAL;
|
|
}
|
|
|
|
uda134x = kzalloc(sizeof(struct uda134x_priv), GFP_KERNEL);
|
|
if (uda134x == NULL)
|
|
return -ENOMEM;
|
|
snd_soc_codec_set_drvdata(codec, uda134x);
|
|
|
|
codec->control_data = pd;
|
|
|
|
if (pd->power)
|
|
pd->power(1);
|
|
|
|
uda134x_reset(codec);
|
|
|
|
if (pd->is_powered_on_standby)
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_ON);
|
|
else
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
switch (pd->model) {
|
|
case UDA134X_UDA1340:
|
|
case UDA134X_UDA1344:
|
|
ret = snd_soc_add_codec_controls(codec, uda1340_snd_controls,
|
|
ARRAY_SIZE(uda1340_snd_controls));
|
|
break;
|
|
case UDA134X_UDA1341:
|
|
ret = snd_soc_add_codec_controls(codec, uda1341_snd_controls,
|
|
ARRAY_SIZE(uda1341_snd_controls));
|
|
break;
|
|
case UDA134X_UDA1345:
|
|
ret = snd_soc_add_codec_controls(codec, uda1345_snd_controls,
|
|
ARRAY_SIZE(uda1345_snd_controls));
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s unknown codec type: %d",
|
|
__func__, pd->model);
|
|
kfree(uda134x);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "UDA134X: failed to register controls\n");
|
|
kfree(uda134x);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int uda134x_soc_remove(struct snd_soc_codec *codec)
|
|
{
|
|
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
|
|
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
kfree(uda134x);
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_PM)
|
|
static int uda134x_soc_suspend(struct snd_soc_codec *codec)
|
|
{
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int uda134x_soc_resume(struct snd_soc_codec *codec)
|
|
{
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
|
|
uda134x_set_bias_level(codec, SND_SOC_BIAS_ON);
|
|
return 0;
|
|
}
|
|
#else
|
|
#define uda134x_soc_suspend NULL
|
|
#define uda134x_soc_resume NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_uda134x = {
|
|
.probe = uda134x_soc_probe,
|
|
.remove = uda134x_soc_remove,
|
|
.suspend = uda134x_soc_suspend,
|
|
.resume = uda134x_soc_resume,
|
|
.reg_cache_size = sizeof(uda134x_reg),
|
|
.reg_word_size = sizeof(u8),
|
|
.reg_cache_default = uda134x_reg,
|
|
.reg_cache_step = 1,
|
|
.read = uda134x_read_reg_cache,
|
|
.write = uda134x_write,
|
|
.set_bias_level = uda134x_set_bias_level,
|
|
};
|
|
|
|
static int uda134x_codec_probe(struct platform_device *pdev)
|
|
{
|
|
return snd_soc_register_codec(&pdev->dev,
|
|
&soc_codec_dev_uda134x, &uda134x_dai, 1);
|
|
}
|
|
|
|
static int uda134x_codec_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_unregister_codec(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver uda134x_codec_driver = {
|
|
.driver = {
|
|
.name = "uda134x-codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = uda134x_codec_probe,
|
|
.remove = uda134x_codec_remove,
|
|
};
|
|
|
|
module_platform_driver(uda134x_codec_driver);
|
|
|
|
MODULE_DESCRIPTION("UDA134X ALSA soc codec driver");
|
|
MODULE_AUTHOR("Zoltan Devai, Christian Pellegrin <chripell@evolware.org>");
|
|
MODULE_LICENSE("GPL");
|