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linux-stable/sound/soc/codecs/rt5682-sdw.c
Pierre-Louis Bossart 14f4946d55
ASoC: rt5682-sdw: fix race condition on system suspend 
In the initial driver we cancelled deferred work, but there is still a
window of time where a new interrupt could result in new deferred work
executed after the link is disabled, leading to an IO error. While we
did not see this IO error on RT5682-based platforms, the code pattern
is similar to the RT700 case where the IO error was noted, so the fix
is added for consistency.

This patch uses an 'disable_irq_lock' mutex to prevent new interrupts
from happening after the start of the system suspend. The choice of a
mutex v. a spinlock is mainly due to the time required to clear
interrupts, which requires a command to be transmitted by the
SoundWire host IP and acknowledged with an interrupt. The
'interrupt_callback' routine is also not meant to be called from an
interrupt context.

An additional 'disable_irq' flag prevents race conditions where the
status changes before the interrupts are disabled, but the workqueue
handling status changes is scheduled after the completion of the
system suspend. On resume the interrupts are re-enabled already by the
io_init routine so we only clear the flag.

The Fixes tag points to a 5.10 commit, there's no need to propagate
this change to earlier upstream versions.

BugLink: https://github.com/thesofproject/linux/issues/2943
Fixes: 4a55000722 ('ASoC: codecs: rt*.c: remove useless pointer cast')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210614180815.153711-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-21 13:00:44 +01:00

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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 <linux/soundwire/sdw_registers.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 = 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 const 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;
mutex_init(&rt5682->disable_irq_lock);
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, loop = 10;
unsigned int val;
rt5682->disable_irq = false;
if (rt5682->hw_init)
return 0;
/*
* 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);
}
while (loop > 0) {
regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
if (val == DEVICE_ID)
break;
dev_warn(dev, "Device with ID register %x is not rt5682\n", val);
usleep_range(30000, 30005);
loop--;
}
if (val != DEVICE_ID) {
dev_err(dev, "Device with ID register %x is not rt5682\n", val);
ret = -ENODEV;
goto err_nodev;
}
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, 0xd142);
regmap_update_bits(rt5682->regmap, RT5682_CBJ_CTRL_5, 0x0700, 0x0600);
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;
err_nodev:
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_put_autosuspend(&slave->dev);
dev_dbg(&slave->dev, "%s hw_init complete: %d\n", __func__, ret);
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;
u32 bit;
unsigned long addr;
struct sdw_dpn_prop *dpn;
prop->scp_int1_mask = SDW_SCP_INT1_IMPL_DEF | SDW_SCP_INT1_BUS_CLASH |
SDW_SCP_INT1_PARITY;
prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
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);
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;
/* 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);
mutex_lock(&rt5682->disable_irq_lock);
if (status->control_port & 0x4 && !rt5682->disable_irq) {
mod_delayed_work(system_power_efficient_wq,
&rt5682->jack_detect_work, msecs_to_jiffies(rt5682->irq_work_delay_time));
}
mutex_unlock(&rt5682->disable_irq_lock);
return 0;
}
static const 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_sync(&rt5682->jack_detect_work);
return 0;
}
static const struct sdw_device_id rt5682_id[] = {
SDW_SLAVE_ENTRY_EXT(0x025d, 0x5682, 0x2, 0, 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;
cancel_delayed_work_sync(&rt5682->jack_detect_work);
regcache_cache_only(rt5682->regmap, true);
regcache_mark_dirty(rt5682->regmap);
return 0;
}
static int __maybe_unused rt5682_dev_system_suspend(struct device *dev)
{
struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
struct sdw_slave *slave = dev_to_sdw_dev(dev);
int ret;
if (!rt5682->hw_init)
return 0;
/*
* prevent new interrupts from being handled after the
* deferred work completes and before the parent disables
* interrupts on the link
*/
mutex_lock(&rt5682->disable_irq_lock);
rt5682->disable_irq = true;
ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1,
SDW_SCP_INT1_IMPL_DEF, 0);
mutex_unlock(&rt5682->disable_irq_lock);
if (ret < 0) {
/* log but don't prevent suspend from happening */
dev_dbg(&slave->dev, "%s: could not disable imp-def interrupts\n:", __func__);
}
return rt5682_dev_suspend(dev);
}
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->first_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_system_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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