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30e102dab5
linux/sound/soc/codecs/rt1308-sdw.c
Pierre-Louis Bossart 30e102dab5
ASoC: rt1308-sdw: use first_hw_init flag on resume 
The intent of the status check on resume was to verify if a SoundWire
peripheral reported ATTACHED before waiting for the initialization to
complete. This is required to avoid timeouts that will happen with
'ghost' devices that are exposed in the platform firmware but are not
populated in hardware.

Unfortunately we used 'hw_init' instead of 'first_hw_init'. Due to
another error, the resume operation never timed out, but the volume
settings were not properly restored.

BugLink: https://github.com/thesofproject/linux/issues/2908
BugLink: https://github.com/thesofproject/linux/issues/2637
Fixes: a87a6653a2 ('ASoC: rt1308-sdw: add rt1308 SdW amplifier driver')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Link: https://lore.kernel.org/r/20210607222239.582139-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-08 13:36:29 +01:00

753 lines
20 KiB
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Raw Blame History

// SPDX-License-Identifier: GPL-2.0
//
// rt1308-sdw.c -- rt1308 ALSA SoC audio driver
//
// Copyright(c) 2019 Realtek Semiconductor Corp.
//
//
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/pm_runtime.h>
#include <linux/mod_devicetable.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include <linux/soundwire/sdw_registers.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include "rt1308.h"
#include "rt1308-sdw.h"
static bool rt1308_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x00e0:
case 0x00f0:
case 0x2f01 ... 0x2f07:
case 0x3000 ... 0x3001:
case 0x3004 ... 0x3005:
case 0x3008:
case 0x300a:
case 0xc000 ... 0xcff3:
return true;
default:
return false;
}
}
static bool rt1308_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x2f01 ... 0x2f07:
case 0x3000 ... 0x3001:
case 0x3004 ... 0x3005:
case 0x3008:
case 0x300a:
case 0xc000:
return true;
default:
return false;
}
}
static const struct regmap_config rt1308_sdw_regmap = {
.reg_bits = 32,
.val_bits = 8,
.readable_reg = rt1308_readable_register,
.volatile_reg = rt1308_volatile_register,
.max_register = 0xcfff,
.reg_defaults = rt1308_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(rt1308_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.use_single_read = true,
.use_single_write = true,
};
/* Bus clock frequency */
#define RT1308_CLK_FREQ_9600000HZ 9600000
#define RT1308_CLK_FREQ_12000000HZ 12000000
#define RT1308_CLK_FREQ_6000000HZ 6000000
#define RT1308_CLK_FREQ_4800000HZ 4800000
#define RT1308_CLK_FREQ_2400000HZ 2400000
#define RT1308_CLK_FREQ_12288000HZ 12288000
static int rt1308_clock_config(struct device *dev)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
unsigned int clk_freq, value;
clk_freq = (rt1308->params.curr_dr_freq >> 1);
switch (clk_freq) {
case RT1308_CLK_FREQ_12000000HZ:
value = 0x0;
break;
case RT1308_CLK_FREQ_6000000HZ:
value = 0x1;
break;
case RT1308_CLK_FREQ_9600000HZ:
value = 0x2;
break;
case RT1308_CLK_FREQ_4800000HZ:
value = 0x3;
break;
case RT1308_CLK_FREQ_2400000HZ:
value = 0x4;
break;
case RT1308_CLK_FREQ_12288000HZ:
value = 0x5;
break;
default:
return -EINVAL;
}
regmap_write(rt1308->regmap, 0xe0, value);
regmap_write(rt1308->regmap, 0xf0, value);
dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
return 0;
}
static int rt1308_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;
prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
prop->paging_support = true;
/* first we need to allocate memory for set bits in port lists */
prop->source_ports = 0x00; /* BITMAP: 00010100 (not enable yet) */
prop->sink_ports = 0x2; /* BITMAP: 00000010 */
/* for sink */
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;
dev_dbg(&slave->dev, "%s\n", __func__);
return 0;
}
static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
int ret = 0;
unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
unsigned int efuse_c_btl_l, efuse_c_btl_r;
if (rt1308->hw_init)
return 0;
if (rt1308->first_hw_init) {
regcache_cache_only(rt1308->regmap, false);
regcache_cache_bypass(rt1308->regmap, true);
}
/*
* PM runtime is only enabled when a Slave reports as Attached
*/
if (!rt1308->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);
/* sw reset */
regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
/* read efuse */
regmap_write(rt1308->regmap, 0xc360, 0x01);
regmap_write(rt1308->regmap, 0xc361, 0x80);
regmap_write(rt1308->regmap, 0xc7f0, 0x04);
regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
msleep(100);
regmap_write(rt1308->regmap, 0xc7f0, 0x44);
msleep(20);
regmap_write(rt1308->regmap, 0xc240, 0x10);
regmap_read(rt1308->regmap, 0xc861, &tmp);
efuse_m_btl_l = tmp;
regmap_read(rt1308->regmap, 0xc860, &tmp);
efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
regmap_read(rt1308->regmap, 0xc863, &tmp);
efuse_c_btl_l = tmp;
regmap_read(rt1308->regmap, 0xc862, &tmp);
efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
regmap_read(rt1308->regmap, 0xc871, &tmp);
efuse_m_btl_r = tmp;
regmap_read(rt1308->regmap, 0xc870, &tmp);
efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
regmap_read(rt1308->regmap, 0xc873, &tmp);
efuse_c_btl_r = tmp;
regmap_read(rt1308->regmap, 0xc872, &tmp);
efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
dev_dbg(&slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
efuse_m_btl_l, efuse_m_btl_r);
dev_dbg(&slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
efuse_c_btl_l, efuse_c_btl_r);
/* initial settings */
regmap_write(rt1308->regmap, 0xc103, 0xc0);
regmap_write(rt1308->regmap, 0xc030, 0x17);
regmap_write(rt1308->regmap, 0xc031, 0x81);
regmap_write(rt1308->regmap, 0xc032, 0x26);
regmap_write(rt1308->regmap, 0xc040, 0x80);
regmap_write(rt1308->regmap, 0xc041, 0x80);
regmap_write(rt1308->regmap, 0xc042, 0x06);
regmap_write(rt1308->regmap, 0xc052, 0x0a);
regmap_write(rt1308->regmap, 0xc080, 0x0a);
regmap_write(rt1308->regmap, 0xc060, 0x02);
regmap_write(rt1308->regmap, 0xc061, 0x75);
regmap_write(rt1308->regmap, 0xc062, 0x05);
regmap_write(rt1308->regmap, 0xc171, 0x07);
regmap_write(rt1308->regmap, 0xc173, 0x0d);
regmap_write(rt1308->regmap, 0xc311, 0x7f);
regmap_write(rt1308->regmap, 0xc900, 0x90);
regmap_write(rt1308->regmap, 0xc1a0, 0x84);
regmap_write(rt1308->regmap, 0xc1a1, 0x01);
regmap_write(rt1308->regmap, 0xc360, 0x78);
regmap_write(rt1308->regmap, 0xc361, 0x87);
regmap_write(rt1308->regmap, 0xc0a1, 0x71);
regmap_write(rt1308->regmap, 0xc210, 0x00);
regmap_write(rt1308->regmap, 0xc070, 0x00);
regmap_write(rt1308->regmap, 0xc100, 0xd7);
regmap_write(rt1308->regmap, 0xc101, 0xd7);
regmap_write(rt1308->regmap, 0xc300, 0x09);
if (rt1308->first_hw_init) {
regcache_cache_bypass(rt1308->regmap, false);
regcache_mark_dirty(rt1308->regmap);
} else
rt1308->first_hw_init = true;
/* Mark Slave initialization complete */
rt1308->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 int rt1308_update_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
/* Update the status */
rt1308->status = status;
if (status == SDW_SLAVE_UNATTACHED)
rt1308->hw_init = false;
/*
* Perform initialization only if slave status is present and
* hw_init flag is false
*/
if (rt1308->hw_init || rt1308->status != SDW_SLAVE_ATTACHED)
return 0;
/* perform I/O transfers required for Slave initialization */
return rt1308_io_init(&slave->dev, slave);
}
static int rt1308_bus_config(struct sdw_slave *slave,
struct sdw_bus_params *params)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
int ret;
memcpy(&rt1308->params, params, sizeof(*params));
ret = rt1308_clock_config(&slave->dev);
if (ret < 0)
dev_err(&slave->dev, "Invalid clk config");
return ret;
}
static int rt1308_interrupt_callback(struct sdw_slave *slave,
struct sdw_slave_intr_status *status)
{
dev_dbg(&slave->dev,
"%s control_port_stat=%x", __func__, status->control_port);
return 0;
}
static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *component =
snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(30);
snd_soc_component_update_bits(component,
RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
0x3, 0x3);
msleep(40);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_component_update_bits(component,
RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
0x3, 0);
usleep_range(150000, 200000);
break;
default:
break;
}
return 0;
}
static const char * const rt1308_rx_data_ch_select[] = {
"LR",
"LL",
"RL",
"RR",
};
static SOC_ENUM_SINGLE_DECL(rt1308_rx_data_ch_enum,
RT1308_SDW_OFFSET | (RT1308_DATA_PATH << 4), 0,
rt1308_rx_data_ch_select);
static const struct snd_kcontrol_new rt1308_snd_controls[] = {
/* I2S Data Channel Selection */
SOC_ENUM("RX Channel Select", rt1308_rx_data_ch_enum),
};
static const struct snd_kcontrol_new rt1308_sto_dac_l =
SOC_DAPM_SINGLE_AUTODISABLE("Switch",
RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
RT1308_DVOL_MUTE_L_EN_SFT, 1, 1);
static const struct snd_kcontrol_new rt1308_sto_dac_r =
SOC_DAPM_SINGLE_AUTODISABLE("Switch",
RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
RT1308_DVOL_MUTE_R_EN_SFT, 1, 1);
static const struct snd_soc_dapm_widget rt1308_dapm_widgets[] = {
/* Audio Interface */
SND_SOC_DAPM_AIF_IN("AIF1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
/* Supply Widgets */
SND_SOC_DAPM_SUPPLY("MBIAS20U",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 7, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("ALDO",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 6, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DBG",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 5, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DACL",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 4, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("CLK25M",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("ADC_R",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("ADC_L",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DAC Power",
RT1308_SDW_OFFSET | (RT1308_POWER << 4), 3, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DLDO",
RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 5, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("VREF",
RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 4, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MIXER_R",
RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MIXER_L",
RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MBIAS4U",
RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL2_LDO",
RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 4, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL2B",
RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 3, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL2F",
RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL2F2",
RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("PLL2B2",
RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 0, 0, NULL, 0),
/* Digital Interface */
SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_SWITCH("DAC L", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_l),
SND_SOC_DAPM_SWITCH("DAC R", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_r),
/* Output Lines */
SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
rt1308_classd_event,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_OUTPUT("SPOL"),
SND_SOC_DAPM_OUTPUT("SPOR"),
};
static const struct snd_soc_dapm_route rt1308_dapm_routes[] = {
{ "DAC", NULL, "AIF1RX" },
{ "DAC", NULL, "MBIAS20U" },
{ "DAC", NULL, "ALDO" },
{ "DAC", NULL, "DBG" },
{ "DAC", NULL, "DACL" },
{ "DAC", NULL, "CLK25M" },
{ "DAC", NULL, "ADC_R" },
{ "DAC", NULL, "ADC_L" },
{ "DAC", NULL, "DLDO" },
{ "DAC", NULL, "VREF" },
{ "DAC", NULL, "MIXER_R" },
{ "DAC", NULL, "MIXER_L" },
{ "DAC", NULL, "MBIAS4U" },
{ "DAC", NULL, "PLL2_LDO" },
{ "DAC", NULL, "PLL2B" },
{ "DAC", NULL, "PLL2F" },
{ "DAC", NULL, "PLL2F2" },
{ "DAC", NULL, "PLL2B2" },
{ "DAC L", "Switch", "DAC" },
{ "DAC R", "Switch", "DAC" },
{ "DAC L", NULL, "DAC Power" },
{ "DAC R", NULL, "DAC Power" },
{ "CLASS D", NULL, "DAC L" },
{ "CLASS D", NULL, "DAC R" },
{ "SPOL", NULL, "CLASS D" },
{ "SPOR", NULL, "CLASS D" },
};
static int rt1308_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 rt1308_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 rt1308_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 rt1308_sdw_priv *rt1308 =
snd_soc_component_get_drvdata(component);
if (tx_mask)
return -EINVAL;
if (slots > 2)
return -EINVAL;
rt1308->rx_mask = rx_mask;
rt1308->slots = slots;
/* slot_width is not used since it's irrelevant for SoundWire */
return 0;
}
static int rt1308_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 rt1308_sdw_priv *rt1308 =
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, ch_mask;
dev_dbg(dai->dev, "%s %s", __func__, dai->name);
stream = snd_soc_dai_get_dma_data(dai, substream);
if (!stream)
return -EINVAL;
if (!rt1308->sdw_slave)
return -EINVAL;
/* SoundWire specific configuration */
/* port 1 for playback */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
direction = SDW_DATA_DIR_RX;
port = 1;
} else {
return -EINVAL;
}
if (rt1308->slots) {
num_channels = rt1308->slots;
ch_mask = rt1308->rx_mask;
} else {
num_channels = params_channels(params);
ch_mask = (1 << num_channels) - 1;
}
stream_config.frame_rate = params_rate(params);
stream_config.ch_count = num_channels;
stream_config.bps = snd_pcm_format_width(params_format(params));
stream_config.direction = direction;
port_config.ch_mask = ch_mask;
port_config.num = port;
retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,
&port_config, 1, stream->sdw_stream);
if (retval) {
dev_err(dai->dev, "Unable to configure port\n");
return retval;
}
return retval;
}
static int rt1308_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct rt1308_sdw_priv *rt1308 =
snd_soc_component_get_drvdata(component);
struct sdw_stream_data *stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!rt1308->sdw_slave)
return -EINVAL;
sdw_stream_remove_slave(rt1308->sdw_slave, stream->sdw_stream);
return 0;
}
/*
* slave_ops: callbacks for get_clock_stop_mode, clock_stop and
* port_prep are not defined for now
*/
static const struct sdw_slave_ops rt1308_slave_ops = {
.read_prop = rt1308_read_prop,
.interrupt_callback = rt1308_interrupt_callback,
.update_status = rt1308_update_status,
.bus_config = rt1308_bus_config,
};
static const struct snd_soc_component_driver soc_component_sdw_rt1308 = {
.controls = rt1308_snd_controls,
.num_controls = ARRAY_SIZE(rt1308_snd_controls),
.dapm_widgets = rt1308_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rt1308_dapm_widgets),
.dapm_routes = rt1308_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(rt1308_dapm_routes),
};
static const struct snd_soc_dai_ops rt1308_aif_dai_ops = {
.hw_params = rt1308_sdw_hw_params,
.hw_free = rt1308_sdw_pcm_hw_free,
.set_sdw_stream = rt1308_set_sdw_stream,
.shutdown = rt1308_sdw_shutdown,
.set_tdm_slot = rt1308_sdw_set_tdm_slot,
};
#define RT1308_STEREO_RATES SNDRV_PCM_RATE_48000
#define RT1308_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver rt1308_sdw_dai[] = {
{
.name = "rt1308-aif",
.playback = {
.stream_name = "DP1 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = RT1308_STEREO_RATES,
.formats = RT1308_FORMATS,
},
.ops = &rt1308_aif_dai_ops,
},
};
static int rt1308_sdw_init(struct device *dev, struct regmap *regmap,
struct sdw_slave *slave)
{
struct rt1308_sdw_priv *rt1308;
int ret;
rt1308 = devm_kzalloc(dev, sizeof(*rt1308), GFP_KERNEL);
if (!rt1308)
return -ENOMEM;
dev_set_drvdata(dev, rt1308);
rt1308->sdw_slave = slave;
rt1308->regmap = regmap;
/*
* Mark hw_init to false
* HW init will be performed when device reports present
*/
rt1308->hw_init = false;
rt1308->first_hw_init = false;
ret = devm_snd_soc_register_component(dev,
&soc_component_sdw_rt1308,
rt1308_sdw_dai,
ARRAY_SIZE(rt1308_sdw_dai));
dev_dbg(&slave->dev, "%s\n", __func__);
return ret;
}
static int rt1308_sdw_probe(struct sdw_slave *slave,
const struct sdw_device_id *id)
{
struct regmap *regmap;
/* Regmap Initialization */
regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
rt1308_sdw_init(&slave->dev, regmap, slave);
return 0;
}
static const struct sdw_device_id rt1308_id[] = {
SDW_SLAVE_ENTRY_EXT(0x025d, 0x1308, 0x2, 0, 0),
{},
};
MODULE_DEVICE_TABLE(sdw, rt1308_id);
static int __maybe_unused rt1308_dev_suspend(struct device *dev)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
if (!rt1308->hw_init)
return 0;
regcache_cache_only(rt1308->regmap, true);
return 0;
}
#define RT1308_PROBE_TIMEOUT 5000
static int __maybe_unused rt1308_dev_resume(struct device *dev)
{
struct sdw_slave *slave = dev_to_sdw_dev(dev);
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
unsigned long time;
if (!rt1308->first_hw_init)
return 0;
if (!slave->unattach_request)
goto regmap_sync;
time = wait_for_completion_timeout(&slave->initialization_complete,
msecs_to_jiffies(RT1308_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(rt1308->regmap, false);
regcache_sync_region(rt1308->regmap, 0xc000, 0xcfff);
return 0;
}
static const struct dev_pm_ops rt1308_pm = {
SET_SYSTEM_SLEEP_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume)
SET_RUNTIME_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume, NULL)
};
static struct sdw_driver rt1308_sdw_driver = {
.driver = {
.name = "rt1308",
.owner = THIS_MODULE,
.pm = &rt1308_pm,
},
.probe = rt1308_sdw_probe,
.ops = &rt1308_slave_ops,
.id_table = rt1308_id,
};
module_sdw_driver(rt1308_sdw_driver);
MODULE_DESCRIPTION("ASoC RT1308 driver SDW");
MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
MODULE_LICENSE("GPL v2");
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