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linux-sg2042/sound/soc/codecs/rt5682-sdw.c

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// SPDX-License-Identifier: GPL-2.0-only
//
// rt5682-sdw.c -- RT5682 ALSA SoC audio component driver
//
// Copyright 2019 Realtek Semiconductor Corp.
// Author: Oder Chiou <oder_chiou@realtek.com>
//
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/acpi.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/mutex.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "rt5682.h"
#define RT5682_SDW_ADDR_L 0x3000
#define RT5682_SDW_ADDR_H 0x3001
#define RT5682_SDW_DATA_L 0x3004
#define RT5682_SDW_DATA_H 0x3005
#define RT5682_SDW_CMD 0x3008
static int rt5682_sdw_read(void *context, unsigned int reg, unsigned int *val)
{
struct device *dev = context;
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
unsigned int data_l, data_h;
regmap_write(rt5682->sdw_regmap, RT5682_SDW_CMD, 0);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_ADDR_H, (reg >> 8) & 0xff);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_ADDR_L, (reg & 0xff));
regmap_read(rt5682->sdw_regmap, RT5682_SDW_DATA_H, &data_h);
regmap_read(rt5682->sdw_regmap, RT5682_SDW_DATA_L, &data_l);
*val = (data_h << 8) | data_l;
dev_vdbg(dev, "[%s] %04x => %04x\n", __func__, reg, *val);
return 0;
}
static int rt5682_sdw_write(void *context, unsigned int reg, unsigned int val)
{
struct device *dev = context;
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_CMD, 1);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_ADDR_H, (reg >> 8) & 0xff);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_ADDR_L, (reg & 0xff));
regmap_write(rt5682->sdw_regmap, RT5682_SDW_DATA_H, (val >> 8) & 0xff);
regmap_write(rt5682->sdw_regmap, RT5682_SDW_DATA_L, (val & 0xff));
dev_vdbg(dev, "[%s] %04x <= %04x\n", __func__, reg, val);
return 0;
}
static const struct regmap_config rt5682_sdw_indirect_regmap = {
.reg_bits = 16,
.val_bits = 16,
.max_register = RT5682_I2C_MODE,
.volatile_reg = rt5682_volatile_register,
.readable_reg = rt5682_readable_register,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = rt5682_reg,
.num_reg_defaults = RT5682_REG_NUM,
.use_single_read = true,
.use_single_write = true,
.reg_read = rt5682_sdw_read,
.reg_write = rt5682_sdw_write,
};
struct sdw_stream_data {
struct sdw_stream_runtime *sdw_stream;
};
static int rt5682_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 = (struct sdw_stream_runtime *)sdw_stream;
/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
if (direction == SNDRV_PCM_STREAM_PLAYBACK)
dai->playback_dma_data = stream;
else
dai->capture_dma_data = stream;
return 0;
}
static void rt5682_sdw_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 rt5682_sdw_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 rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
struct sdw_stream_config stream_config;
struct sdw_port_config port_config;
enum sdw_data_direction direction;
struct sdw_stream_data *stream;
int retval, port, num_channels;
unsigned int val_p = 0, val_c = 0, osr_p = 0, osr_c = 0;
dev_dbg(dai->dev, "%s %s", __func__, dai->name);
stream = snd_soc_dai_get_dma_data(dai, substream);
if (!stream)
return -ENOMEM;
if (!rt5682->slave)
return -EINVAL;
/* SoundWire specific configuration */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
direction = SDW_DATA_DIR_RX;
port = 1;
} else {
direction = SDW_DATA_DIR_TX;
port = 2;
}
stream_config.frame_rate = params_rate(params);
stream_config.ch_count = params_channels(params);
stream_config.bps = snd_pcm_format_width(params_format(params));
stream_config.direction = direction;
num_channels = params_channels(params);
port_config.ch_mask = (1 << (num_channels)) - 1;
port_config.num = port;
retval = sdw_stream_add_slave(rt5682->slave, &stream_config,
&port_config, 1, stream->sdw_stream);
if (retval) {
dev_err(dai->dev, "Unable to configure port\n");
return retval;
}
switch (params_rate(params)) {
case 48000:
val_p = RT5682_SDW_REF_1_48K;
val_c = RT5682_SDW_REF_2_48K;
break;
case 96000:
val_p = RT5682_SDW_REF_1_96K;
val_c = RT5682_SDW_REF_2_96K;
break;
case 192000:
val_p = RT5682_SDW_REF_1_192K;
val_c = RT5682_SDW_REF_2_192K;
break;
case 32000:
val_p = RT5682_SDW_REF_1_32K;
val_c = RT5682_SDW_REF_2_32K;
break;
case 24000:
val_p = RT5682_SDW_REF_1_24K;
val_c = RT5682_SDW_REF_2_24K;
break;
case 16000:
val_p = RT5682_SDW_REF_1_16K;
val_c = RT5682_SDW_REF_2_16K;
break;
case 12000:
val_p = RT5682_SDW_REF_1_12K;
val_c = RT5682_SDW_REF_2_12K;
break;
case 8000:
val_p = RT5682_SDW_REF_1_8K;
val_c = RT5682_SDW_REF_2_8K;
break;
case 44100:
val_p = RT5682_SDW_REF_1_44K;
val_c = RT5682_SDW_REF_2_44K;
break;
case 88200:
val_p = RT5682_SDW_REF_1_88K;
val_c = RT5682_SDW_REF_2_88K;
break;
case 176400:
val_p = RT5682_SDW_REF_1_176K;
val_c = RT5682_SDW_REF_2_176K;
break;
case 22050:
val_p = RT5682_SDW_REF_1_22K;
val_c = RT5682_SDW_REF_2_22K;
break;
case 11025:
val_p = RT5682_SDW_REF_1_11K;
val_c = RT5682_SDW_REF_2_11K;
break;
default:
return -EINVAL;
}
if (params_rate(params) <= 48000) {
osr_p = RT5682_DAC_OSR_D_8;
osr_c = RT5682_ADC_OSR_D_8;
} else if (params_rate(params) <= 96000) {
osr_p = RT5682_DAC_OSR_D_4;
osr_c = RT5682_ADC_OSR_D_4;
} else {
osr_p = RT5682_DAC_OSR_D_2;
osr_c = RT5682_ADC_OSR_D_2;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
regmap_update_bits(rt5682->regmap, RT5682_SDW_REF_CLK,
RT5682_SDW_REF_1_MASK, val_p);
regmap_update_bits(rt5682->regmap, RT5682_ADDA_CLK_1,
RT5682_DAC_OSR_MASK, osr_p);
} else {
regmap_update_bits(rt5682->regmap, RT5682_SDW_REF_CLK,
RT5682_SDW_REF_2_MASK, val_c);
regmap_update_bits(rt5682->regmap, RT5682_ADDA_CLK_1,
RT5682_ADC_OSR_MASK, osr_c);
}
return retval;
}
static int rt5682_sdw_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
struct sdw_stream_data *stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!rt5682->slave)
return -EINVAL;
sdw_stream_remove_slave(rt5682->slave, stream->sdw_stream);
return 0;
}
static struct snd_soc_dai_ops rt5682_sdw_ops = {
.hw_params = rt5682_sdw_hw_params,
.hw_free = rt5682_sdw_hw_free,
.set_sdw_stream = rt5682_set_sdw_stream,
.shutdown = rt5682_sdw_shutdown,
};
static struct snd_soc_dai_driver rt5682_dai[] = {
{
.name = "rt5682-aif1",
.id = RT5682_AIF1,
.playback = {
.stream_name = "AIF1 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT5682_STEREO_RATES,
.formats = RT5682_FORMATS,
},
.capture = {
.stream_name = "AIF1 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT5682_STEREO_RATES,
.formats = RT5682_FORMATS,
},
.ops = &rt5682_aif1_dai_ops,
},
{
.name = "rt5682-aif2",
.id = RT5682_AIF2,
.capture = {
.stream_name = "AIF2 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT5682_STEREO_RATES,
.formats = RT5682_FORMATS,
},
.ops = &rt5682_aif2_dai_ops,
},
{
.name = "rt5682-sdw",
.id = RT5682_SDW,
.playback = {
.stream_name = "SDW Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT5682_STEREO_RATES,
.formats = RT5682_FORMATS,
},
.capture = {
.stream_name = "SDW Capture",
.channels_min = 1,
.channels_max = 2,
.rates = RT5682_STEREO_RATES,
.formats = RT5682_FORMATS,
},
.ops = &rt5682_sdw_ops,
},
};
static int rt5682_sdw_init(struct device *dev, struct regmap *regmap,
struct sdw_slave *slave)
{
struct rt5682_priv *rt5682;
int ret;
rt5682 = devm_kzalloc(dev, sizeof(*rt5682), GFP_KERNEL);
if (!rt5682)
return -ENOMEM;
dev_set_drvdata(dev, rt5682);
rt5682->slave = slave;
rt5682->sdw_regmap = regmap;
rt5682->is_sdw = true;
rt5682->regmap = devm_regmap_init(dev, NULL, dev,
&rt5682_sdw_indirect_regmap);
if (IS_ERR(rt5682->regmap)) {
ret = PTR_ERR(rt5682->regmap);
dev_err(dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
/*
* Mark hw_init to false
* HW init will be performed when device reports present
*/
rt5682->hw_init = false;
rt5682->first_hw_init = false;
mutex_init(&rt5682->calibrate_mutex);
INIT_DELAYED_WORK(&rt5682->jack_detect_work,
rt5682_jack_detect_handler);
ret = devm_snd_soc_register_component(dev,
&rt5682_soc_component_dev,
rt5682_dai, ARRAY_SIZE(rt5682_dai));
dev_dbg(&slave->dev, "%s\n", __func__);
return ret;
}
static int rt5682_io_init(struct device *dev, struct sdw_slave *slave)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
int ret = 0;
unsigned int val;
if (rt5682->hw_init)
return 0;
regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
if (val != DEVICE_ID) {
dev_err(dev, "Device with ID register %x is not rt5682\n", val);
return -ENODEV;
}
/*
* PM runtime is only enabled when a Slave reports as Attached
*/
if (!rt5682->first_hw_init) {
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
pm_runtime_use_autosuspend(&slave->dev);
/* update count of parent 'active' children */
pm_runtime_set_active(&slave->dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_enable(&slave->dev);
}
pm_runtime_get_noresume(&slave->dev);
if (rt5682->first_hw_init) {
regcache_cache_only(rt5682->regmap, false);
regcache_cache_bypass(rt5682->regmap, true);
}
rt5682_calibrate(rt5682);
if (rt5682->first_hw_init) {
regcache_cache_bypass(rt5682->regmap, false);
regcache_mark_dirty(rt5682->regmap);
regcache_sync(rt5682->regmap);
/* volatile registers */
regmap_update_bits(rt5682->regmap, RT5682_CBJ_CTRL_2,
RT5682_EXT_JD_SRC, RT5682_EXT_JD_SRC_MANUAL);
goto reinit;
}
rt5682_apply_patch_list(rt5682, dev);
regmap_write(rt5682->regmap, RT5682_DEPOP_1, 0x0000);
regmap_update_bits(rt5682->regmap, RT5682_PWR_ANLG_1,
RT5682_LDO1_DVO_MASK | RT5682_HP_DRIVER_MASK,
RT5682_LDO1_DVO_12 | RT5682_HP_DRIVER_5X);
regmap_write(rt5682->regmap, RT5682_MICBIAS_2, 0x0080);
regmap_write(rt5682->regmap, RT5682_TEST_MODE_CTRL_1, 0x0000);
regmap_update_bits(rt5682->regmap, RT5682_BIAS_CUR_CTRL_8,
RT5682_HPA_CP_BIAS_CTRL_MASK, RT5682_HPA_CP_BIAS_3UA);
regmap_update_bits(rt5682->regmap, RT5682_CHARGE_PUMP_1,
RT5682_CP_CLK_HP_MASK, RT5682_CP_CLK_HP_300KHZ);
regmap_update_bits(rt5682->regmap, RT5682_HP_CHARGE_PUMP_1,
RT5682_PM_HP_MASK, RT5682_PM_HP_HV);
/* Soundwire */
regmap_write(rt5682->regmap, RT5682_PLL2_INTERNAL, 0xa266);
regmap_write(rt5682->regmap, RT5682_PLL2_CTRL_1, 0x1700);
regmap_write(rt5682->regmap, RT5682_PLL2_CTRL_2, 0x0006);
regmap_write(rt5682->regmap, RT5682_PLL2_CTRL_3, 0x2600);
regmap_write(rt5682->regmap, RT5682_PLL2_CTRL_4, 0x0c8f);
regmap_write(rt5682->regmap, RT5682_PLL_TRACK_2, 0x3000);
regmap_write(rt5682->regmap, RT5682_PLL_TRACK_3, 0x4000);
regmap_update_bits(rt5682->regmap, RT5682_GLB_CLK,
RT5682_SCLK_SRC_MASK | RT5682_PLL2_SRC_MASK,
RT5682_SCLK_SRC_PLL2 | RT5682_PLL2_SRC_SDW);
regmap_update_bits(rt5682->regmap, RT5682_CBJ_CTRL_2,
RT5682_EXT_JD_SRC, RT5682_EXT_JD_SRC_MANUAL);
regmap_write(rt5682->regmap, RT5682_CBJ_CTRL_1, 0xd042);
regmap_update_bits(rt5682->regmap, RT5682_CBJ_CTRL_3,
RT5682_CBJ_IN_BUF_EN, RT5682_CBJ_IN_BUF_EN);
regmap_update_bits(rt5682->regmap, RT5682_SAR_IL_CMD_1,
RT5682_SAR_POW_MASK, RT5682_SAR_POW_EN);
regmap_update_bits(rt5682->regmap, RT5682_RC_CLK_CTRL,
RT5682_POW_IRQ | RT5682_POW_JDH |
RT5682_POW_ANA, RT5682_POW_IRQ |
RT5682_POW_JDH | RT5682_POW_ANA);
regmap_update_bits(rt5682->regmap, RT5682_PWR_ANLG_2,
RT5682_PWR_JDH, RT5682_PWR_JDH);
regmap_update_bits(rt5682->regmap, RT5682_IRQ_CTRL_2,
RT5682_JD1_EN_MASK | RT5682_JD1_IRQ_MASK,
RT5682_JD1_EN | RT5682_JD1_IRQ_PUL);
reinit:
mod_delayed_work(system_power_efficient_wq,
&rt5682->jack_detect_work, msecs_to_jiffies(250));
/* Mark Slave initialization complete */
rt5682->hw_init = true;
rt5682->first_hw_init = true;
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_put_autosuspend(&slave->dev);
dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
return ret;
}
static bool rt5682_sdw_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x00e0:
case 0x00f0:
case 0x3000:
case 0x3001:
case 0x3004:
case 0x3005:
case 0x3008:
return true;
default:
return false;
}
}
static const struct regmap_config rt5682_sdw_regmap = {
.name = "sdw",
.reg_bits = 32,
.val_bits = 8,
.max_register = RT5682_I2C_MODE,
.readable_reg = rt5682_sdw_readable_register,
.cache_type = REGCACHE_NONE,
.use_single_read = true,
.use_single_write = true,
};
static int rt5682_update_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(&slave->dev);
/* Update the status */
rt5682->status = status;
if (status == SDW_SLAVE_UNATTACHED)
rt5682->hw_init = false;
/*
* Perform initialization only if slave status is present and
* hw_init flag is false
*/
if (rt5682->hw_init || rt5682->status != SDW_SLAVE_ATTACHED)
return 0;
/* perform I/O transfers required for Slave initialization */
return rt5682_io_init(&slave->dev, slave);
}
static int rt5682_read_prop(struct sdw_slave *slave)
{
struct sdw_slave_prop *prop = &slave->prop;
int nval, i, num_of_ports = 1;
u32 bit;
unsigned long addr;
struct sdw_dpn_prop *dpn;
prop->paging_support = false;
/* first we need to allocate memory for set bits in port lists */
prop->source_ports = 0x4; /* BITMAP: 00000100 */
prop->sink_ports = 0x2; /* BITMAP: 00000010 */
nval = hweight32(prop->source_ports);
num_of_ports += nval;
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);
num_of_ports += nval;
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++;
}
/* Allocate port_ready based on num_of_ports */
slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
sizeof(*slave->port_ready),
GFP_KERNEL);
if (!slave->port_ready)
return -ENOMEM;
/* Initialize completion */
for (i = 0; i < num_of_ports; i++)
init_completion(&slave->port_ready[i]);
/* set the timeout values */
prop->clk_stop_timeout = 20;
/* wake-up event */
prop->wake_capable = 1;
return 0;
}
/* Bus clock frequency */
#define RT5682_CLK_FREQ_9600000HZ 9600000
#define RT5682_CLK_FREQ_12000000HZ 12000000
#define RT5682_CLK_FREQ_6000000HZ 6000000
#define RT5682_CLK_FREQ_4800000HZ 4800000
#define RT5682_CLK_FREQ_2400000HZ 2400000
#define RT5682_CLK_FREQ_12288000HZ 12288000
static int rt5682_clock_config(struct device *dev)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
unsigned int clk_freq, value;
clk_freq = (rt5682->params.curr_dr_freq >> 1);
switch (clk_freq) {
case RT5682_CLK_FREQ_12000000HZ:
value = 0x0;
break;
case RT5682_CLK_FREQ_6000000HZ:
value = 0x1;
break;
case RT5682_CLK_FREQ_9600000HZ:
value = 0x2;
break;
case RT5682_CLK_FREQ_4800000HZ:
value = 0x3;
break;
case RT5682_CLK_FREQ_2400000HZ:
value = 0x4;
break;
case RT5682_CLK_FREQ_12288000HZ:
value = 0x5;
break;
default:
return -EINVAL;
}
regmap_write(rt5682->sdw_regmap, 0xe0, value);
regmap_write(rt5682->sdw_regmap, 0xf0, value);
dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
return 0;
}
static int rt5682_bus_config(struct sdw_slave *slave,
struct sdw_bus_params *params)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(&slave->dev);
int ret;
memcpy(&rt5682->params, params, sizeof(*params));
ret = rt5682_clock_config(&slave->dev);
if (ret < 0)
dev_err(&slave->dev, "Invalid clk config");
return ret;
}
static int rt5682_interrupt_callback(struct sdw_slave *slave,
struct sdw_slave_intr_status *status)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(&slave->dev);
dev_dbg(&slave->dev,
"%s control_port_stat=%x", __func__, status->control_port);
if (status->control_port & 0x4) {
mod_delayed_work(system_power_efficient_wq,
&rt5682->jack_detect_work, msecs_to_jiffies(250));
}
return 0;
}
static struct sdw_slave_ops rt5682_slave_ops = {
.read_prop = rt5682_read_prop,
.interrupt_callback = rt5682_interrupt_callback,
.update_status = rt5682_update_status,
.bus_config = rt5682_bus_config,
};
static int rt5682_sdw_probe(struct sdw_slave *slave,
const struct sdw_device_id *id)
{
struct regmap *regmap;
/* Regmap Initialization */
regmap = devm_regmap_init_sdw(slave, &rt5682_sdw_regmap);
if (IS_ERR(regmap))
return -EINVAL;
rt5682_sdw_init(&slave->dev, regmap, slave);
return 0;
}
static int rt5682_sdw_remove(struct sdw_slave *slave)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(&slave->dev);
if (rt5682 && rt5682->hw_init)
cancel_delayed_work(&rt5682->jack_detect_work);
return 0;
}
static const struct sdw_device_id rt5682_id[] = {
SDW_SLAVE_ENTRY(0x025d, 0x5682, 0),
{},
};
MODULE_DEVICE_TABLE(sdw, rt5682_id);
static int __maybe_unused rt5682_dev_suspend(struct device *dev)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
if (!rt5682->hw_init)
return 0;
regcache_cache_only(rt5682->regmap, true);
regcache_mark_dirty(rt5682->regmap);
return 0;
}
static int __maybe_unused rt5682_dev_resume(struct device *dev)
{
struct sdw_slave *slave = dev_to_sdw_dev(dev);
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
unsigned long time;
if (!rt5682->hw_init)
return 0;
if (!slave->unattach_request)
goto regmap_sync;
time = wait_for_completion_timeout(&slave->initialization_complete,
msecs_to_jiffies(RT5682_PROBE_TIMEOUT));
if (!time) {
dev_err(&slave->dev, "Initialization not complete, timed out\n");
return -ETIMEDOUT;
}
regmap_sync:
slave->unattach_request = 0;
regcache_cache_only(rt5682->regmap, false);
regcache_sync(rt5682->regmap);
return 0;
}
static const struct dev_pm_ops rt5682_pm = {
SET_SYSTEM_SLEEP_PM_OPS(rt5682_dev_suspend, rt5682_dev_resume)
SET_RUNTIME_PM_OPS(rt5682_dev_suspend, rt5682_dev_resume, NULL)
};
static struct sdw_driver rt5682_sdw_driver = {
.driver = {
.name = "rt5682",
.owner = THIS_MODULE,
.pm = &rt5682_pm,
},
.probe = rt5682_sdw_probe,
.remove = rt5682_sdw_remove,
.ops = &rt5682_slave_ops,
.id_table = rt5682_id,
};
module_sdw_driver(rt5682_sdw_driver);
MODULE_DESCRIPTION("ASoC RT5682 driver SDW");
MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");
MODULE_LICENSE("GPL v2");
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