mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
425 lines
9.8 KiB
C
425 lines
9.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* max98088.c -- MAX98088 ALSA SoC Audio driver
|
|
*
|
|
* Copyright 2010 Maxim Integrated Products
|
|
*
|
|
* Modified for U-Boot by Chih-Chung Chang (chihchung@chromium.org),
|
|
* following the changes made in max98095.c
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <audio_codec.h>
|
|
#include <div64.h>
|
|
#include <dm.h>
|
|
#include <i2c.h>
|
|
#include <i2s.h>
|
|
#include <log.h>
|
|
#include <sound.h>
|
|
#include <asm/gpio.h>
|
|
#include "maxim_codec.h"
|
|
#include "max98088.h"
|
|
|
|
/* codec mclk clock divider coefficients. Index 0 is reserved. */
|
|
static const int rate_table[] = {0, 8000, 11025, 16000, 22050, 24000, 32000,
|
|
44100, 48000, 88200, 96000};
|
|
|
|
/*
|
|
* codec mclk clock divider coefficients based on sampling rate
|
|
*
|
|
* @param rate sampling rate
|
|
* @param value address of indexvalue to be stored
|
|
*
|
|
* Return: 0 for success or negative error code.
|
|
*/
|
|
static int rate_value(int rate, u8 *value)
|
|
{
|
|
int i;
|
|
|
|
for (i = 1; i < ARRAY_SIZE(rate_table); i++) {
|
|
if (rate_table[i] >= rate) {
|
|
*value = i;
|
|
return 0;
|
|
}
|
|
}
|
|
*value = 1;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Sets hw params for max98088
|
|
*
|
|
* @priv: max98088 information pointer
|
|
* @rate: Sampling rate
|
|
* @bits_per_sample: Bits per sample
|
|
*
|
|
* Return: -EIO for error, 0 for success.
|
|
*/
|
|
int max98088_hw_params(struct maxim_priv *priv, unsigned int rate,
|
|
unsigned int bits_per_sample)
|
|
{
|
|
int error;
|
|
u8 regval;
|
|
|
|
switch (bits_per_sample) {
|
|
case 16:
|
|
error = maxim_bic_or(priv, M98088_REG_DAI1_FORMAT,
|
|
M98088_DAI_WS, 0);
|
|
break;
|
|
case 24:
|
|
error = maxim_bic_or(priv, M98088_REG_DAI1_FORMAT,
|
|
M98088_DAI_WS, M98088_DAI_WS);
|
|
break;
|
|
default:
|
|
debug("%s: Illegal bits per sample %d.\n",
|
|
__func__, bits_per_sample);
|
|
return -EINVAL;
|
|
}
|
|
|
|
error |= maxim_bic_or(priv, M98088_REG_PWR_SYS, M98088_SHDNRUN, 0);
|
|
|
|
if (rate_value(rate, ®val)) {
|
|
debug("%s: Failed to set sample rate to %d.\n",
|
|
__func__, rate);
|
|
return -EIO;
|
|
}
|
|
|
|
error |= maxim_bic_or(priv, M98088_REG_DAI1_CLKMODE,
|
|
M98088_CLKMODE_MASK, regval << 4);
|
|
priv->rate = rate;
|
|
|
|
/* Update sample rate mode */
|
|
if (rate < 50000)
|
|
error |= maxim_bic_or(priv, M98088_REG_DAI1_FILTERS,
|
|
M98088_DAI_DHF, 0);
|
|
else
|
|
error |= maxim_bic_or(priv, M98088_REG_DAI1_FILTERS,
|
|
M98088_DAI_DHF, M98088_DAI_DHF);
|
|
|
|
error |= maxim_bic_or(priv, M98088_REG_PWR_SYS, M98088_SHDNRUN,
|
|
M98088_SHDNRUN);
|
|
|
|
if (error < 0) {
|
|
debug("%s: Error setting hardware params.\n", __func__);
|
|
return -EIO;
|
|
}
|
|
priv->rate = rate;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Configures Audio interface system clock for the given frequency
|
|
*
|
|
* @priv: max98088 information
|
|
* @freq: Sampling frequency in Hz
|
|
*
|
|
* Return: -EIO for error, 0 for success.
|
|
*/
|
|
int max98088_set_sysclk(struct maxim_priv *priv, unsigned int freq)
|
|
{
|
|
int error = 0;
|
|
u8 pwr;
|
|
|
|
/* Requested clock frequency is already setup */
|
|
if (freq == priv->sysclk)
|
|
return 0;
|
|
|
|
/*
|
|
* Setup clocks for slave mode, and using the PLL
|
|
* PSCLK = 0x01 (when master clk is 10MHz to 20MHz)
|
|
* 0x02 (when master clk is 20MHz to 30MHz)..
|
|
*/
|
|
if (freq >= 10000000 && freq < 20000000) {
|
|
error = maxim_i2c_write(priv, M98088_REG_SYS_CLK, 0x10);
|
|
} else if ((freq >= 20000000) && (freq < 30000000)) {
|
|
error = maxim_i2c_write(priv, M98088_REG_SYS_CLK, 0x20);
|
|
} else {
|
|
debug("%s: Invalid master clock frequency\n", __func__);
|
|
return -EIO;
|
|
}
|
|
|
|
error |= maxim_i2c_read(priv, M98088_REG_PWR_SYS, &pwr);
|
|
if (pwr & M98088_SHDNRUN) {
|
|
error |= maxim_bic_or(priv, M98088_REG_PWR_SYS,
|
|
M98088_SHDNRUN, 0);
|
|
error |= maxim_bic_or(priv, M98088_REG_PWR_SYS,
|
|
M98088_SHDNRUN, M98088_SHDNRUN);
|
|
}
|
|
|
|
debug("%s: Clock at %uHz\n", __func__, freq);
|
|
if (error < 0)
|
|
return -EIO;
|
|
|
|
priv->sysclk = freq;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sets Max98090 I2S format
|
|
*
|
|
* @priv: max98088 information
|
|
* @fmt: i2S format - supports a subset of the options defined in i2s.h.
|
|
*
|
|
* Return: -EIO for error, 0 for success.
|
|
*/
|
|
int max98088_set_fmt(struct maxim_priv *priv, int fmt)
|
|
{
|
|
u8 reg15val;
|
|
u8 reg14val = 0;
|
|
int error = 0;
|
|
|
|
if (fmt == priv->fmt)
|
|
return 0;
|
|
|
|
priv->fmt = fmt;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
/* Slave mode PLL */
|
|
error |= maxim_i2c_write(priv, M98088_REG_DAI1_CLKCFG_HI,
|
|
0x80);
|
|
error |= maxim_i2c_write(priv, M98088_REG_DAI1_CLKCFG_LO,
|
|
0x00);
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
/* Set to master mode */
|
|
reg14val |= M98088_DAI_MAS;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
default:
|
|
debug("%s: Clock mode unsupported\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
reg14val |= M98088_DAI_DLY;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
break;
|
|
default:
|
|
debug("%s: Unrecognized format.\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
reg14val |= M98088_DAI_WCI;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
reg14val |= M98088_DAI_BCI;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
reg14val |= M98088_DAI_BCI | M98088_DAI_WCI;
|
|
break;
|
|
default:
|
|
debug("%s: Unrecognized inversion settings.\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
error |= maxim_bic_or(priv, M98088_REG_DAI1_FORMAT,
|
|
M98088_DAI_MAS | M98088_DAI_DLY | M98088_DAI_BCI |
|
|
M98088_DAI_WCI, reg14val);
|
|
reg15val = M98088_DAI_BSEL64;
|
|
error |= maxim_i2c_write(priv, M98088_REG_DAI1_CLOCK, reg15val);
|
|
|
|
if (error < 0) {
|
|
debug("%s: Error setting i2s format.\n", __func__);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* max98088_reset() - reset the audio codec
|
|
*
|
|
* @priv: max98088 information
|
|
* Return: -EIO for error, 0 for success.
|
|
*/
|
|
static int max98088_reset(struct maxim_priv *priv)
|
|
{
|
|
int ret, i;
|
|
u8 val;
|
|
|
|
/*
|
|
* Reset to hardware default for registers, as there is not a soft
|
|
* reset hardware control register.
|
|
*/
|
|
for (i = M98088_REG_IRQ_ENABLE; i <= M98088_REG_PWR_SYS; i++) {
|
|
switch (i) {
|
|
case M98088_REG_BIAS_CNTL:
|
|
val = 0xf0;
|
|
break;
|
|
case M98088_REG_DAC_BIAS2:
|
|
val = 0x0f;
|
|
break;
|
|
default:
|
|
val = 0;
|
|
}
|
|
ret = maxim_i2c_write(priv, i, val);
|
|
if (ret < 0) {
|
|
debug("%s: Failed to reset: %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* max98088_device_init() - Initialise max98088 codec device
|
|
*
|
|
* @priv: max98088 information
|
|
*
|
|
* Return: -EIO for error, 0 for success.
|
|
*/
|
|
static int max98088_device_init(struct maxim_priv *priv)
|
|
{
|
|
unsigned char id;
|
|
int error = 0;
|
|
|
|
/* reset the codec, the DSP core, and disable all interrupts */
|
|
error = max98088_reset(priv);
|
|
if (error != 0) {
|
|
debug("Reset\n");
|
|
return error;
|
|
}
|
|
|
|
/* initialize private data */
|
|
priv->sysclk = -1U;
|
|
priv->rate = -1U;
|
|
priv->fmt = -1U;
|
|
|
|
error = maxim_i2c_read(priv, M98088_REG_REV_ID, &id);
|
|
if (error < 0) {
|
|
debug("%s: Failure reading hardware revision: %d\n",
|
|
__func__, id);
|
|
return -EIO;
|
|
}
|
|
debug("%s: Hardware revision: %d\n", __func__, id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max98088_setup_interface(struct maxim_priv *priv)
|
|
{
|
|
int error;
|
|
|
|
/* Reading interrupt status to clear them */
|
|
error = maxim_i2c_write(priv, M98088_REG_PWR_SYS, M98088_PWRSV);
|
|
error |= maxim_i2c_write(priv, M98088_REG_IRQ_ENABLE, 0x00);
|
|
|
|
/*
|
|
* initialize registers to hardware default configuring audio
|
|
* interface2 to DAI1
|
|
*/
|
|
error |= maxim_i2c_write(priv, M98088_REG_MIX_DAC,
|
|
M98088_DAI1L_TO_DACL | M98088_DAI1R_TO_DACR);
|
|
error |= maxim_i2c_write(priv, M98088_REG_BIAS_CNTL, 0xF0);
|
|
error |= maxim_i2c_write(priv, M98088_REG_DAC_BIAS2, 0x0F);
|
|
error |= maxim_i2c_write(priv, M98088_REG_DAI1_IOCFG,
|
|
M98088_S2NORMAL | M98088_SDATA);
|
|
|
|
/*
|
|
* route DACL and DACR output to headphone and speakers
|
|
* Ordering: DACL, DACR, DACL, DACR
|
|
*/
|
|
error |= maxim_i2c_write(priv, M98088_REG_MIX_SPK_LEFT, 1);
|
|
error |= maxim_i2c_write(priv, M98088_REG_MIX_SPK_RIGHT, 1);
|
|
error |= maxim_i2c_write(priv, M98088_REG_MIX_HP_LEFT, 1);
|
|
error |= maxim_i2c_write(priv, M98088_REG_MIX_HP_RIGHT, 1);
|
|
|
|
/* set volume: -12db */
|
|
error |= maxim_i2c_write(priv, M98088_REG_LVL_SPK_L, 0x0f);
|
|
error |= maxim_i2c_write(priv, M98088_REG_LVL_SPK_R, 0x0f);
|
|
|
|
/* set volume: -22db */
|
|
error |= maxim_i2c_write(priv, M98088_REG_LVL_HP_L, 0x0d);
|
|
error |= maxim_i2c_write(priv, M98088_REG_LVL_HP_R, 0x0d);
|
|
|
|
/* power enable */
|
|
error |= maxim_i2c_write(priv, M98088_REG_PWR_EN_OUT,
|
|
M98088_HPLEN | M98088_HPREN | M98088_SPLEN |
|
|
M98088_SPREN | M98088_DALEN | M98088_DAREN);
|
|
if (error < 0)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max98088_do_init(struct maxim_priv *priv, int sampling_rate,
|
|
int mclk_freq, int bits_per_sample)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = max98088_setup_interface(priv);
|
|
if (ret < 0) {
|
|
debug("%s: max98088 setup interface failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
ret = max98088_set_sysclk(priv, mclk_freq);
|
|
if (ret < 0) {
|
|
debug("%s: max98088 codec set sys clock failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
ret = max98088_hw_params(priv, sampling_rate, bits_per_sample);
|
|
|
|
if (ret == 0) {
|
|
ret = max98088_set_fmt(priv, SND_SOC_DAIFMT_I2S |
|
|
SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBS_CFS);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int max98088_set_params(struct udevice *dev, int interface, int rate,
|
|
int mclk_freq, int bits_per_sample,
|
|
uint channels)
|
|
{
|
|
struct maxim_priv *priv = dev_get_priv(dev);
|
|
|
|
return max98088_do_init(priv, rate, mclk_freq, bits_per_sample);
|
|
}
|
|
|
|
static int max98088_probe(struct udevice *dev)
|
|
{
|
|
struct maxim_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
priv->dev = dev;
|
|
ret = max98088_device_init(priv);
|
|
if (ret < 0) {
|
|
debug("%s: max98088 codec chip init failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct audio_codec_ops max98088_ops = {
|
|
.set_params = max98088_set_params,
|
|
};
|
|
|
|
static const struct udevice_id max98088_ids[] = {
|
|
{ .compatible = "maxim,max98088" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(max98088) = {
|
|
.name = "max98088",
|
|
.id = UCLASS_AUDIO_CODEC,
|
|
.of_match = max98088_ids,
|
|
.probe = max98088_probe,
|
|
.ops = &max98088_ops,
|
|
.priv_auto = sizeof(struct maxim_priv),
|
|
};
|