// 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/sdw.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:
case 0xc710:
case 0xcf01:
case 0xc860 ... 0xc863:
case 0xc870 ... 0xc873:
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_MAPLE,
.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 void rt1308_apply_calib_params(struct rt1308_sdw_priv *rt1308)
{
unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
unsigned int efuse_c_btl_l, efuse_c_btl_r;
/* read efuse to apply calibration parameters */
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(&rt1308->sdw_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(&rt1308->sdw_slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
efuse_c_btl_l, efuse_c_btl_r);
}
static void rt1308_apply_bq_params(struct rt1308_sdw_priv *rt1308)
{
unsigned int i, reg, data;
for (i = 0; i < rt1308->bq_params_cnt; i += 3) {
reg = rt1308->bq_params[i] | (rt1308->bq_params[i + 1] << 8);
data = rt1308->bq_params[i + 2];
regmap_write(rt1308->regmap, reg, data);
}
}
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 tmp, hibernation_flag;
if (rt1308->hw_init)
return 0;
regcache_cache_only(rt1308->regmap, false);
if (rt1308->first_hw_init)
regcache_cache_bypass(rt1308->regmap, true);
/*
* PM runtime status is marked as 'active' only when a Slave reports as Attached
*/
if (!rt1308->first_hw_init)
/* update count of parent 'active' children */
pm_runtime_set_active(&slave->dev);
pm_runtime_get_noresume(&slave->dev);
regmap_read(rt1308->regmap, 0xcf01, &hibernation_flag);
if ((hibernation_flag != 0x00) && rt1308->first_hw_init)
goto _preset_ready_;
/* sw reset */
regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
regmap_read(rt1308->regmap, 0xc710, &tmp);
rt1308->hw_ver = tmp;
dev_dbg(dev, "%s, hw_ver=0x%x\n", __func__, rt1308->hw_ver);
/* 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);
if (rt1308->hw_ver == RT1308_VER_C) {
regmap_write(rt1308->regmap, 0xc311, 0x7f);
regmap_write(rt1308->regmap, 0xc300, 0x09);
} else {
regmap_write(rt1308->regmap, 0xc311, 0x4f);
regmap_write(rt1308->regmap, 0xc300, 0x0b);
}
regmap_write(rt1308->regmap, 0xc900, 0x5a);
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);
/* apply BQ params */
rt1308_apply_bq_params(rt1308);
regmap_write(rt1308->regmap, 0xcf01, 0x01);
_preset_ready_:
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);
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 || 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);
struct rt1308_sdw_priv *rt1308 =
snd_soc_component_get_drvdata(component);
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);
rt1308_apply_calib_params(rt1308);
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)
{
snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
return 0;
}
static void rt1308_sdw_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
snd_soc_dai_set_dma_data(dai, substream, NULL);
}
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 = {0};
struct sdw_port_config port_config = {0};
struct sdw_stream_runtime *sdw_stream;
int retval;
dev_dbg(dai->dev, "%s %s", __func__, dai->name);
sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
if (!sdw_stream)
return -EINVAL;
if (!rt1308->sdw_slave)
return -EINVAL;
/* SoundWire specific configuration */
snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
/* port 1 for playback */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
port_config.num = 1;
else
return -EINVAL;
if (rt1308->slots) {
stream_config.ch_count = rt1308->slots;
port_config.ch_mask = rt1308->rx_mask;
}
retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,
&port_config, 1, 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_runtime *sdw_stream =
snd_soc_dai_get_dma_data(dai, substream);
if (!rt1308->sdw_slave)
return -EINVAL;
sdw_stream_remove_slave(rt1308->sdw_slave, 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 int rt1308_sdw_parse_dt(struct rt1308_sdw_priv *rt1308, struct device *dev)
{
int ret = 0;
device_property_read_u32(dev, "realtek,bq-params-cnt", &rt1308->bq_params_cnt);
if (rt1308->bq_params_cnt) {
rt1308->bq_params = devm_kzalloc(dev, rt1308->bq_params_cnt, GFP_KERNEL);
if (!rt1308->bq_params) {
dev_err(dev, "Could not allocate bq_params memory\n");
ret = -ENOMEM;
} else {
ret = device_property_read_u8_array(dev, "realtek,bq-params", rt1308->bq_params, rt1308->bq_params_cnt);
if (ret < 0)
dev_err(dev, "Could not read list of realtek,bq-params\n");
}
}
dev_dbg(dev, "bq_params_cnt=%d\n", rt1308->bq_params_cnt);
return ret;
}
static int rt1308_sdw_component_probe(struct snd_soc_component *component)
{
struct rt1308_sdw_priv *rt1308 = snd_soc_component_get_drvdata(component);
int ret;
rt1308->component = component;
rt1308_sdw_parse_dt(rt1308, &rt1308->sdw_slave->dev);
if (!rt1308->first_hw_init)
return 0;
ret = pm_runtime_resume(component->dev);
if (ret < 0 && ret != -EACCES)
return ret;
/* apply BQ params */
rt1308_apply_bq_params(rt1308);
return 0;
}
static const struct snd_soc_component_driver soc_component_sdw_rt1308 = {
.probe = rt1308_sdw_component_probe,
.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),
.endianness = 1,
};
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_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;
regcache_cache_only(rt1308->regmap, true);
/*
* 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));
if (ret < 0)
return ret;
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(dev, 3000);
pm_runtime_use_autosuspend(dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(dev);
pm_runtime_enable(dev);
/* important note: the device is NOT tagged as 'active' and will remain
* 'suspended' until the hardware is enumerated/initialized. This is required
* to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
* fail with -EACCESS because of race conditions between card creation and enumeration
*/
dev_dbg(dev, "%s\n", __func__);
return 0;
}
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);
return rt1308_sdw_init(&slave->dev, regmap, slave);
}
static int rt1308_sdw_remove(struct sdw_slave *slave)
{
pm_runtime_disable(&slave->dev);
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");
sdw_show_ping_status(slave->bus, true);
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",
.pm = &rt1308_pm,
},
.probe = rt1308_sdw_probe,
.remove = rt1308_sdw_remove,
.ops = &rt1308_slave_ops,
.id_table = rt1308_id,
};
module_sdw_driver(rt1308_sdw_driver);
MODULE_DESCRIPTION("ASoC RT1308 driver SDW");
MODULE_AUTHOR("Shuming Fan <[email protected]>");
MODULE_LICENSE("GPL v2");
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