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linux-zen-server/sound/soc/codecs/max98373-sdw.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2020, Maxim Integrated
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/sdw.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include <linux/soundwire/sdw_registers.h>
#include "max98373.h"
#include "max98373-sdw.h"
struct sdw_stream_data {
struct sdw_stream_runtime *sdw_stream;
};
static const u32 max98373_sdw_cache_reg[] = {
MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK,
MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK,
MAX98373_R20B6_BDE_CUR_STATE_READBACK,
};
static struct reg_default max98373_reg[] = {
{MAX98373_R0040_SCP_INIT_STAT_1, 0x00},
{MAX98373_R0041_SCP_INIT_MASK_1, 0x00},
{MAX98373_R0042_SCP_INIT_STAT_2, 0x00},
{MAX98373_R0044_SCP_CTRL, 0x00},
{MAX98373_R0045_SCP_SYSTEM_CTRL, 0x00},
{MAX98373_R0046_SCP_DEV_NUMBER, 0x00},
{MAX98373_R0050_SCP_DEV_ID_0, 0x21},
{MAX98373_R0051_SCP_DEV_ID_1, 0x01},
{MAX98373_R0052_SCP_DEV_ID_2, 0x9F},
{MAX98373_R0053_SCP_DEV_ID_3, 0x87},
{MAX98373_R0054_SCP_DEV_ID_4, 0x08},
{MAX98373_R0055_SCP_DEV_ID_5, 0x00},
{MAX98373_R0060_SCP_FRAME_CTLR, 0x00},
{MAX98373_R0070_SCP_FRAME_CTLR, 0x00},
{MAX98373_R0100_DP1_INIT_STAT, 0x00},
{MAX98373_R0101_DP1_INIT_MASK, 0x00},
{MAX98373_R0102_DP1_PORT_CTRL, 0x00},
{MAX98373_R0103_DP1_BLOCK_CTRL_1, 0x00},
{MAX98373_R0104_DP1_PREPARE_STATUS, 0x00},
{MAX98373_R0105_DP1_PREPARE_CTRL, 0x00},
{MAX98373_R0120_DP1_CHANNEL_EN, 0x00},
{MAX98373_R0122_DP1_SAMPLE_CTRL1, 0x00},
{MAX98373_R0123_DP1_SAMPLE_CTRL2, 0x00},
{MAX98373_R0124_DP1_OFFSET_CTRL1, 0x00},
{MAX98373_R0125_DP1_OFFSET_CTRL2, 0x00},
{MAX98373_R0126_DP1_HCTRL, 0x00},
{MAX98373_R0127_DP1_BLOCK_CTRL3, 0x00},
{MAX98373_R0130_DP1_CHANNEL_EN, 0x00},
{MAX98373_R0132_DP1_SAMPLE_CTRL1, 0x00},
{MAX98373_R0133_DP1_SAMPLE_CTRL2, 0x00},
{MAX98373_R0134_DP1_OFFSET_CTRL1, 0x00},
{MAX98373_R0135_DP1_OFFSET_CTRL2, 0x00},
{MAX98373_R0136_DP1_HCTRL, 0x0136},
{MAX98373_R0137_DP1_BLOCK_CTRL3, 0x00},
{MAX98373_R0300_DP3_INIT_STAT, 0x00},
{MAX98373_R0301_DP3_INIT_MASK, 0x00},
{MAX98373_R0302_DP3_PORT_CTRL, 0x00},
{MAX98373_R0303_DP3_BLOCK_CTRL_1, 0x00},
{MAX98373_R0304_DP3_PREPARE_STATUS, 0x00},
{MAX98373_R0305_DP3_PREPARE_CTRL, 0x00},
{MAX98373_R0320_DP3_CHANNEL_EN, 0x00},
{MAX98373_R0322_DP3_SAMPLE_CTRL1, 0x00},
{MAX98373_R0323_DP3_SAMPLE_CTRL2, 0x00},
{MAX98373_R0324_DP3_OFFSET_CTRL1, 0x00},
{MAX98373_R0325_DP3_OFFSET_CTRL2, 0x00},
{MAX98373_R0326_DP3_HCTRL, 0x00},
{MAX98373_R0327_DP3_BLOCK_CTRL3, 0x00},
{MAX98373_R0330_DP3_CHANNEL_EN, 0x00},
{MAX98373_R0332_DP3_SAMPLE_CTRL1, 0x00},
{MAX98373_R0333_DP3_SAMPLE_CTRL2, 0x00},
{MAX98373_R0334_DP3_OFFSET_CTRL1, 0x00},
{MAX98373_R0335_DP3_OFFSET_CTRL2, 0x00},
{MAX98373_R0336_DP3_HCTRL, 0x00},
{MAX98373_R0337_DP3_BLOCK_CTRL3, 0x00},
{MAX98373_R2000_SW_RESET, 0x00},
{MAX98373_R2001_INT_RAW1, 0x00},
{MAX98373_R2002_INT_RAW2, 0x00},
{MAX98373_R2003_INT_RAW3, 0x00},
{MAX98373_R2004_INT_STATE1, 0x00},
{MAX98373_R2005_INT_STATE2, 0x00},
{MAX98373_R2006_INT_STATE3, 0x00},
{MAX98373_R2007_INT_FLAG1, 0x00},
{MAX98373_R2008_INT_FLAG2, 0x00},
{MAX98373_R2009_INT_FLAG3, 0x00},
{MAX98373_R200A_INT_EN1, 0x00},
{MAX98373_R200B_INT_EN2, 0x00},
{MAX98373_R200C_INT_EN3, 0x00},
{MAX98373_R200D_INT_FLAG_CLR1, 0x00},
{MAX98373_R200E_INT_FLAG_CLR2, 0x00},
{MAX98373_R200F_INT_FLAG_CLR3, 0x00},
{MAX98373_R2010_IRQ_CTRL, 0x00},
{MAX98373_R2014_THERM_WARN_THRESH, 0x10},
{MAX98373_R2015_THERM_SHDN_THRESH, 0x27},
{MAX98373_R2016_THERM_HYSTERESIS, 0x01},
{MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0},
{MAX98373_R2018_THERM_FOLDBACK_EN, 0x00},
{MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55},
{MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE},
{MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF},
{MAX98373_R2022_PCM_TX_SRC_1, 0x00},
{MAX98373_R2023_PCM_TX_SRC_2, 0x00},
{MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0},
{MAX98373_R2025_AUDIO_IF_MODE, 0x00},
{MAX98373_R2026_PCM_CLOCK_RATIO, 0x04},
{MAX98373_R2027_PCM_SR_SETUP_1, 0x08},
{MAX98373_R2028_PCM_SR_SETUP_2, 0x88},
{MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00},
{MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00},
{MAX98373_R202B_PCM_RX_EN, 0x00},
{MAX98373_R202C_PCM_TX_EN, 0x00},
{MAX98373_R202E_ICC_RX_CH_EN_1, 0x00},
{MAX98373_R202F_ICC_RX_CH_EN_2, 0x00},
{MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF},
{MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF},
{MAX98373_R2032_ICC_LINK_EN_CFG, 0x30},
{MAX98373_R2034_ICC_TX_CNTL, 0x00},
{MAX98373_R2035_ICC_TX_EN, 0x00},
{MAX98373_R2036_SOUNDWIRE_CTRL, 0x05},
{MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00},
{MAX98373_R203E_AMP_PATH_GAIN, 0x08},
{MAX98373_R203F_AMP_DSP_CFG, 0x02},
{MAX98373_R2040_TONE_GEN_CFG, 0x00},
{MAX98373_R2041_AMP_CFG, 0x03},
{MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00},
{MAX98373_R2043_AMP_EN, 0x00},
{MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04},
{MAX98373_R2047_IV_SENSE_ADC_EN, 0x00},
{MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00},
{MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00},
{MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00},
{MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00},
{MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00},
{MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00},
{MAX98373_R2090_BDE_LVL_HOLD, 0x00},
{MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00},
{MAX98373_R2092_BDE_CLIPPER_MODE, 0x00},
{MAX98373_R2097_BDE_L1_THRESH, 0x00},
{MAX98373_R2098_BDE_L2_THRESH, 0x00},
{MAX98373_R2099_BDE_L3_THRESH, 0x00},
{MAX98373_R209A_BDE_L4_THRESH, 0x00},
{MAX98373_R209B_BDE_THRESH_HYST, 0x00},
{MAX98373_R20A8_BDE_L1_CFG_1, 0x00},
{MAX98373_R20A9_BDE_L1_CFG_2, 0x00},
{MAX98373_R20AA_BDE_L1_CFG_3, 0x00},
{MAX98373_R20AB_BDE_L2_CFG_1, 0x00},
{MAX98373_R20AC_BDE_L2_CFG_2, 0x00},
{MAX98373_R20AD_BDE_L2_CFG_3, 0x00},
{MAX98373_R20AE_BDE_L3_CFG_1, 0x00},
{MAX98373_R20AF_BDE_L3_CFG_2, 0x00},
{MAX98373_R20B0_BDE_L3_CFG_3, 0x00},
{MAX98373_R20B1_BDE_L4_CFG_1, 0x00},
{MAX98373_R20B2_BDE_L4_CFG_2, 0x00},
{MAX98373_R20B3_BDE_L4_CFG_3, 0x00},
{MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00},
{MAX98373_R20B5_BDE_EN, 0x00},
{MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00},
{MAX98373_R20D1_DHT_CFG, 0x01},
{MAX98373_R20D2_DHT_ATTACK_CFG, 0x02},
{MAX98373_R20D3_DHT_RELEASE_CFG, 0x03},
{MAX98373_R20D4_DHT_EN, 0x00},
{MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00},
{MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00},
{MAX98373_R20E2_LIMITER_EN, 0x00},
{MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00},
{MAX98373_R20FF_GLOBAL_SHDN, 0x00},
{MAX98373_R21FF_REV_ID, 0x42},
};
static bool max98373_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case MAX98373_R21FF_REV_ID:
case MAX98373_R2010_IRQ_CTRL:
/* SoundWire Control Port Registers */
case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR:
/* Soundwire Data Port 1 Registers */
case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3:
/* Soundwire Data Port 3 Registers */
case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3:
case MAX98373_R2000_SW_RESET ... MAX98373_R200C_INT_EN3:
case MAX98373_R2014_THERM_WARN_THRESH
... MAX98373_R2018_THERM_FOLDBACK_EN:
case MAX98373_R201E_PIN_DRIVE_STRENGTH
... MAX98373_R2036_SOUNDWIRE_CTRL:
case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN:
case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG
... MAX98373_R2047_IV_SENSE_ADC_EN:
case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE
... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN:
case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE:
case MAX98373_R2097_BDE_L1_THRESH
... MAX98373_R209B_BDE_THRESH_HYST:
case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3:
case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK:
case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN:
case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN:
case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG
... MAX98373_R20FF_GLOBAL_SHDN:
return true;
default:
return false;
}
};
static bool max98373_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK:
case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK:
case MAX98373_R20B6_BDE_CUR_STATE_READBACK:
case MAX98373_R20FF_GLOBAL_SHDN:
case MAX98373_R21FF_REV_ID:
/* SoundWire Control Port Registers */
case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR:
/* Soundwire Data Port 1 Registers */
case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3:
/* Soundwire Data Port 3 Registers */
case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3:
case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3:
return true;
default:
return false;
}
}
static const struct regmap_config max98373_sdw_regmap = {
.reg_bits = 32,
.val_bits = 8,
.max_register = MAX98373_R21FF_REV_ID,
.reg_defaults = max98373_reg,
.num_reg_defaults = ARRAY_SIZE(max98373_reg),
.readable_reg = max98373_readable_register,
.volatile_reg = max98373_volatile_reg,
.cache_type = REGCACHE_RBTREE,
.use_single_read = true,
.use_single_write = true,
};
/* Power management functions and structure */
static __maybe_unused int max98373_suspend(struct device *dev)
{
struct max98373_priv *max98373 = dev_get_drvdata(dev);
int i;
/* cache feedback register values before suspend */
for (i = 0; i < max98373->cache_num; i++)
regmap_read(max98373->regmap, max98373->cache[i].reg, &max98373->cache[i].val);
regcache_cache_only(max98373->regmap, true);
return 0;
}
#define MAX98373_PROBE_TIMEOUT 5000
static __maybe_unused int max98373_resume(struct device *dev)
{
struct sdw_slave *slave = dev_to_sdw_dev(dev);
struct max98373_priv *max98373 = dev_get_drvdata(dev);
unsigned long time;
if (!max98373->first_hw_init)
return 0;
if (!slave->unattach_request)
goto regmap_sync;
time = wait_for_completion_timeout(&slave->initialization_complete,
msecs_to_jiffies(MAX98373_PROBE_TIMEOUT));
if (!time) {
dev_err(dev, "Initialization not complete, timed out\n");
sdw_show_ping_status(slave->bus, true);
return -ETIMEDOUT;
}
regmap_sync:
slave->unattach_request = 0;
regcache_cache_only(max98373->regmap, false);
regcache_sync(max98373->regmap);
return 0;
}
static const struct dev_pm_ops max98373_pm = {
SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume)
SET_RUNTIME_PM_OPS(max98373_suspend, max98373_resume, NULL)
};
static int max98373_read_prop(struct sdw_slave *slave)
{
struct sdw_slave_prop *prop = &slave->prop;
int nval, i;
u32 bit;
unsigned long addr;
struct sdw_dpn_prop *dpn;
prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
/* BITMAP: 00001000 Dataport 3 is active */
prop->source_ports = BIT(3);
/* BITMAP: 00000010 Dataport 1 is active */
prop->sink_ports = BIT(1);
prop->paging_support = true;
prop->clk_stop_timeout = 20;
nval = hweight32(prop->source_ports);
prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
sizeof(*prop->src_dpn_prop),
GFP_KERNEL);
if (!prop->src_dpn_prop)
return -ENOMEM;
i = 0;
dpn = prop->src_dpn_prop;
addr = prop->source_ports;
for_each_set_bit(bit, &addr, 32) {
dpn[i].num = bit;
dpn[i].type = SDW_DPN_FULL;
dpn[i].simple_ch_prep_sm = true;
dpn[i].ch_prep_timeout = 10;
i++;
}
/* do this again for sink now */
nval = hweight32(prop->sink_ports);
prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
sizeof(*prop->sink_dpn_prop),
GFP_KERNEL);
if (!prop->sink_dpn_prop)
return -ENOMEM;
i = 0;
dpn = prop->sink_dpn_prop;
addr = prop->sink_ports;
for_each_set_bit(bit, &addr, 32) {
dpn[i].num = bit;
dpn[i].type = SDW_DPN_FULL;
dpn[i].simple_ch_prep_sm = true;
dpn[i].ch_prep_timeout = 10;
i++;
}
/* set the timeout values */
prop->clk_stop_timeout = 20;
return 0;
}
static int max98373_io_init(struct sdw_slave *slave)
{
struct device *dev = &slave->dev;
struct max98373_priv *max98373 = dev_get_drvdata(dev);
if (max98373->first_hw_init) {
regcache_cache_only(max98373->regmap, false);
regcache_cache_bypass(max98373->regmap, true);
}
/*
* PM runtime is only enabled when a Slave reports as Attached
*/
if (!max98373->first_hw_init) {
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(dev, 3000);
pm_runtime_use_autosuspend(dev);
/* update count of parent 'active' children */
pm_runtime_set_active(dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(dev);
pm_runtime_enable(dev);
}
pm_runtime_get_noresume(dev);
/* Software Reset */
max98373_reset(max98373, dev);
/* Set soundwire mode */
regmap_write(max98373->regmap, MAX98373_R2025_AUDIO_IF_MODE, 3);
/* Enable ADC */
regmap_write(max98373->regmap, MAX98373_R2047_IV_SENSE_ADC_EN, 3);
/* Set default Soundwire clock */
regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, 5);
/* Set default sampling rate for speaker and IVDAC */
regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88);
/* IV default slot configuration */
regmap_write(max98373->regmap,
MAX98373_R2020_PCM_TX_HIZ_EN_1,
0xFF);
regmap_write(max98373->regmap,
MAX98373_R2021_PCM_TX_HIZ_EN_2,
0xFF);
/* L/R mix configuration */
regmap_write(max98373->regmap,
MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1,
0x80);
regmap_write(max98373->regmap,
MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2,
0x1);
/* Enable DC blocker */
regmap_write(max98373->regmap,
MAX98373_R203F_AMP_DSP_CFG,
0x3);
/* Enable IMON VMON DC blocker */
regmap_write(max98373->regmap,
MAX98373_R2046_IV_SENSE_ADC_DSP_CFG,
0x7);
/* voltage, current slot configuration */
regmap_write(max98373->regmap,
MAX98373_R2022_PCM_TX_SRC_1,
(max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT |
max98373->v_slot) & 0xFF);
if (max98373->v_slot < 8)
regmap_update_bits(max98373->regmap,
MAX98373_R2020_PCM_TX_HIZ_EN_1,
1 << max98373->v_slot, 0);
else
regmap_update_bits(max98373->regmap,
MAX98373_R2021_PCM_TX_HIZ_EN_2,
1 << (max98373->v_slot - 8), 0);
if (max98373->i_slot < 8)
regmap_update_bits(max98373->regmap,
MAX98373_R2020_PCM_TX_HIZ_EN_1,
1 << max98373->i_slot, 0);
else
regmap_update_bits(max98373->regmap,
MAX98373_R2021_PCM_TX_HIZ_EN_2,
1 << (max98373->i_slot - 8), 0);
/* speaker feedback slot configuration */
regmap_write(max98373->regmap,
MAX98373_R2023_PCM_TX_SRC_2,
max98373->spkfb_slot & 0xFF);
/* Set interleave mode */
if (max98373->interleave_mode)
regmap_update_bits(max98373->regmap,
MAX98373_R2024_PCM_DATA_FMT_CFG,
MAX98373_PCM_TX_CH_INTERLEAVE_MASK,
MAX98373_PCM_TX_CH_INTERLEAVE_MASK);
/* Speaker enable */
regmap_update_bits(max98373->regmap,
MAX98373_R2043_AMP_EN,
MAX98373_SPK_EN_MASK, 1);
regmap_write(max98373->regmap, MAX98373_R20B5_BDE_EN, 1);
regmap_write(max98373->regmap, MAX98373_R20E2_LIMITER_EN, 1);
if (max98373->first_hw_init) {
regcache_cache_bypass(max98373->regmap, false);
regcache_mark_dirty(max98373->regmap);
}
max98373->first_hw_init = true;
max98373->hw_init = true;
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
return 0;
}
static int max98373_clock_calculate(struct sdw_slave *slave,
unsigned int clk_freq)
{
int x, y;
static const int max98373_clk_family[] = {
7680000, 8400000, 9600000, 11289600,
12000000, 12288000, 13000000
};
for (x = 0; x < 4; x++)
for (y = 0; y < ARRAY_SIZE(max98373_clk_family); y++)
if (clk_freq == (max98373_clk_family[y] >> x))
return (x << 3) + y;
/* Set default clock (12.288 Mhz) if the value is not in the list */
dev_err(&slave->dev, "Requested clock not found. (clk_freq = %d)\n",
clk_freq);
return 0x5;
}
static int max98373_clock_config(struct sdw_slave *slave,
struct sdw_bus_params *params)
{
struct device *dev = &slave->dev;
struct max98373_priv *max98373 = dev_get_drvdata(dev);
unsigned int clk_freq, value;
clk_freq = (params->curr_dr_freq >> 1);
/*
* Select the proper value for the register based on the
* requested clock. If the value is not in the list,
* use reasonable default - 12.288 Mhz
*/
value = max98373_clock_calculate(slave, clk_freq);
/* SWCLK */
regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, value);
/* The default Sampling Rate value for IV is 48KHz*/
regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88);
return 0;
}
#define MAX98373_RATES SNDRV_PCM_RATE_8000_96000
#define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
static int max98373_sdw_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct max98373_priv *max98373 =
snd_soc_component_get_drvdata(component);
struct sdw_stream_config stream_config = {0};
struct sdw_port_config port_config = {0};
struct sdw_stream_data *stream;
int ret, chan_sz, sampling_rate;
stream = snd_soc_dai_get_dma_data(dai, substream);
if (!stream)
return -EINVAL;
if (!max98373->slave)
return -EINVAL;
snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
port_config.num = 1;
if (max98373->slot) {
stream_config.ch_count = max98373->slot;
port_config.ch_mask = max98373->rx_mask;
}
} else {
port_config.num = 3;
/* only IV are supported by capture */
stream_config.ch_count = 2;
port_config.ch_mask = GENMASK((int)stream_config.ch_count - 1, 0);
}
ret = sdw_stream_add_slave(max98373->slave, &stream_config,
&port_config, 1, stream->sdw_stream);
if (ret) {
dev_err(dai->dev, "Unable to configure port\n");
return ret;
}
if (params_channels(params) > 16) {
dev_err(component->dev, "Unsupported channels %d\n",
params_channels(params));
return -EINVAL;
}
/* Channel size configuration */
switch (snd_pcm_format_width(params_format(params))) {
case 16:
chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16;
break;
case 24:
chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24;
break;
case 32:
chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32;
break;
default:
dev_err(component->dev, "Channel size unsupported %d\n",
params_format(params));
return -EINVAL;
}
max98373->ch_size = snd_pcm_format_width(params_format(params));
regmap_update_bits(max98373->regmap,
MAX98373_R2024_PCM_DATA_FMT_CFG,
MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
dev_dbg(component->dev, "Format supported %d", params_format(params));
/* Sampling rate configuration */
switch (params_rate(params)) {
case 8000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_8000;
break;
case 11025:
sampling_rate = MAX98373_PCM_SR_SET1_SR_11025;
break;
case 12000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_12000;
break;
case 16000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_16000;
break;
case 22050:
sampling_rate = MAX98373_PCM_SR_SET1_SR_22050;
break;
case 24000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_24000;
break;
case 32000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_32000;
break;
case 44100:
sampling_rate = MAX98373_PCM_SR_SET1_SR_44100;
break;
case 48000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_48000;
break;
case 88200:
sampling_rate = MAX98373_PCM_SR_SET1_SR_88200;
break;
case 96000:
sampling_rate = MAX98373_PCM_SR_SET1_SR_96000;
break;
default:
dev_err(component->dev, "Rate %d is not supported\n",
params_rate(params));
return -EINVAL;
}
/* set correct sampling frequency */
regmap_update_bits(max98373->regmap,
MAX98373_R2028_PCM_SR_SETUP_2,
MAX98373_PCM_SR_SET2_SR_MASK,
sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT);
/* set sampling rate of IV */
regmap_update_bits(max98373->regmap,
MAX98373_R2028_PCM_SR_SETUP_2,
MAX98373_PCM_SR_SET2_IVADC_SR_MASK,
sampling_rate);
return 0;
}
static int max98373_pcm_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct max98373_priv *max98373 =
snd_soc_component_get_drvdata(component);
struct sdw_stream_data *stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!max98373->slave)
return -EINVAL;
sdw_stream_remove_slave(max98373->slave, stream->sdw_stream);
return 0;
}
static int max98373_set_sdw_stream(struct snd_soc_dai *dai,
void *sdw_stream, int direction)
{
struct sdw_stream_data *stream;
if (!sdw_stream)
return 0;
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
if (!stream)
return -ENOMEM;
stream->sdw_stream = sdw_stream;
/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
snd_soc_dai_dma_data_set(dai, direction, stream);
return 0;
}
static void max98373_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sdw_stream_data *stream;
stream = snd_soc_dai_get_dma_data(dai, substream);
snd_soc_dai_set_dma_data(dai, substream, NULL);
kfree(stream);
}
static int max98373_sdw_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask,
unsigned int rx_mask,
int slots, int slot_width)
{
struct snd_soc_component *component = dai->component;
struct max98373_priv *max98373 =
snd_soc_component_get_drvdata(component);
/* tx_mask is unused since it's irrelevant for I/V feedback */
if (tx_mask)
return -EINVAL;
if (!rx_mask && !slots && !slot_width)
max98373->tdm_mode = false;
else
max98373->tdm_mode = true;
max98373->rx_mask = rx_mask;
max98373->slot = slots;
return 0;
}
static const struct snd_soc_dai_ops max98373_dai_sdw_ops = {
.hw_params = max98373_sdw_dai_hw_params,
.hw_free = max98373_pcm_hw_free,
.set_stream = max98373_set_sdw_stream,
.shutdown = max98373_shutdown,
.set_tdm_slot = max98373_sdw_set_tdm_slot,
};
static struct snd_soc_dai_driver max98373_sdw_dai[] = {
{
.name = "max98373-aif1",
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = MAX98373_RATES,
.formats = MAX98373_FORMATS,
},
.capture = {
.stream_name = "HiFi Capture",
.channels_min = 1,
.channels_max = 2,
.rates = MAX98373_RATES,
.formats = MAX98373_FORMATS,
},
.ops = &max98373_dai_sdw_ops,
}
};
static int max98373_init(struct sdw_slave *slave, struct regmap *regmap)
{
struct max98373_priv *max98373;
int ret;
int i;
struct device *dev = &slave->dev;
/* Allocate and assign private driver data structure */
max98373 = devm_kzalloc(dev, sizeof(*max98373), GFP_KERNEL);
if (!max98373)
return -ENOMEM;
dev_set_drvdata(dev, max98373);
max98373->regmap = regmap;
max98373->slave = slave;
max98373->cache_num = ARRAY_SIZE(max98373_sdw_cache_reg);
max98373->cache = devm_kcalloc(dev, max98373->cache_num,
sizeof(*max98373->cache),
GFP_KERNEL);
if (!max98373->cache)
return -ENOMEM;
for (i = 0; i < max98373->cache_num; i++)
max98373->cache[i].reg = max98373_sdw_cache_reg[i];
/* Read voltage and slot configuration */
max98373_slot_config(dev, max98373);
max98373->hw_init = false;
max98373->first_hw_init = false;
/* codec registration */
ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98373_sdw,
max98373_sdw_dai,
ARRAY_SIZE(max98373_sdw_dai));
if (ret < 0)
dev_err(dev, "Failed to register codec: %d\n", ret);
return ret;
}
static int max98373_update_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
struct max98373_priv *max98373 = dev_get_drvdata(&slave->dev);
if (status == SDW_SLAVE_UNATTACHED)
max98373->hw_init = false;
/*
* Perform initialization only if slave status is SDW_SLAVE_ATTACHED
*/
if (max98373->hw_init || status != SDW_SLAVE_ATTACHED)
return 0;
/* perform I/O transfers required for Slave initialization */
return max98373_io_init(slave);
}
static int max98373_bus_config(struct sdw_slave *slave,
struct sdw_bus_params *params)
{
int ret;
ret = max98373_clock_config(slave, params);
if (ret < 0)
dev_err(&slave->dev, "Invalid clk config");
return ret;
}
/*
* slave_ops: callbacks for get_clock_stop_mode, clock_stop and
* port_prep are not defined for now
*/
static struct sdw_slave_ops max98373_slave_ops = {
.read_prop = max98373_read_prop,
.update_status = max98373_update_status,
.bus_config = max98373_bus_config,
};
static int max98373_sdw_probe(struct sdw_slave *slave,
const struct sdw_device_id *id)
{
struct regmap *regmap;
/* Regmap Initialization */
regmap = devm_regmap_init_sdw(slave, &max98373_sdw_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
return max98373_init(slave, regmap);
}
static int max98373_sdw_remove(struct sdw_slave *slave)
{
struct max98373_priv *max98373 = dev_get_drvdata(&slave->dev);
if (max98373->first_hw_init)
pm_runtime_disable(&slave->dev);
return 0;
}
#if defined(CONFIG_OF)
static const struct of_device_id max98373_of_match[] = {
{ .compatible = "maxim,max98373", },
{},
};
MODULE_DEVICE_TABLE(of, max98373_of_match);
#endif
#ifdef CONFIG_ACPI
static const struct acpi_device_id max98373_acpi_match[] = {
{ "MX98373", 0 },
{},
};
MODULE_DEVICE_TABLE(acpi, max98373_acpi_match);
#endif
static const struct sdw_device_id max98373_id[] = {
SDW_SLAVE_ENTRY(0x019F, 0x8373, 0),
{},
};
MODULE_DEVICE_TABLE(sdw, max98373_id);
static struct sdw_driver max98373_sdw_driver = {
.driver = {
.name = "max98373",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(max98373_of_match),
.acpi_match_table = ACPI_PTR(max98373_acpi_match),
.pm = &max98373_pm,
},
.probe = max98373_sdw_probe,
.remove = max98373_sdw_remove,
.ops = &max98373_slave_ops,
.id_table = max98373_id,
};
module_sdw_driver(max98373_sdw_driver);
MODULE_DESCRIPTION("ASoC MAX98373 driver SDW");
MODULE_AUTHOR("Oleg Sherbakov <oleg.sherbakov@maximintegrated.com>");
MODULE_LICENSE("GPL v2");