// SPDX-License-Identifier: GPL-2.0-only
//
// rt715-sdca-sdw.c -- rt715 ALSA SoC audio driver
//
// Copyright(c) 2020 Realtek Semiconductor Corp.
//
//
#include <linux/delay.h>
#include <linux/device.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/pm_runtime.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "rt715-sdca.h"
#include "rt715-sdca-sdw.h"
static bool rt715_sdca_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x201a ... 0x2027:
case 0x2029 ... 0x202a:
case 0x202d ... 0x2034:
case 0x2200 ... 0x2204:
case 0x2206 ... 0x2212:
case 0x2230 ... 0x2239:
case 0x2f5b:
case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00):
return true;
default:
return false;
}
}
static bool rt715_sdca_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x201b:
case 0x201c:
case 0x201d:
case 0x201f:
case 0x2021:
case 0x2023:
case 0x2230:
case 0x202d ... 0x202f: /* BRA */
case 0x2200 ... 0x2212: /* i2c debug */
case 0x2f07:
case 0x2f1b ... 0x2f1e:
case 0x2f30 ... 0x2f34:
case 0x2f50 ... 0x2f51:
case 0x2f53 ... 0x2f59:
case 0x2f5c ... 0x2f5f:
case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00): /* VAD Searching status */
return true;
default:
return false;
}
}
static bool rt715_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x2000000:
case 0x200002b:
case 0x2000036:
case 0x2000037:
case 0x2000039:
case 0x2000044:
case 0x6100000:
return true;
default:
return false;
}
}
static bool rt715_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x2000000:
return true;
default:
return false;
}
}
static const struct regmap_config rt715_sdca_regmap = {
.reg_bits = 32,
.val_bits = 8,
.readable_reg = rt715_sdca_readable_register,
.volatile_reg = rt715_sdca_volatile_register,
.max_register = 0x43ffffff,
.reg_defaults = rt715_reg_defaults_sdca,
.num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults_sdca),
.cache_type = REGCACHE_MAPLE,
.use_single_read = true,
.use_single_write = true,
};
static const struct regmap_config rt715_sdca_mbq_regmap = {
.name = "sdw-mbq",
.reg_bits = 32,
.val_bits = 16,
.readable_reg = rt715_sdca_mbq_readable_register,
.volatile_reg = rt715_sdca_mbq_volatile_register,
.max_register = 0x43ffffff,
.reg_defaults = rt715_mbq_reg_defaults_sdca,
.num_reg_defaults = ARRAY_SIZE(rt715_mbq_reg_defaults_sdca),
.cache_type = REGCACHE_MAPLE,
.use_single_read = true,
.use_single_write = true,
};
static int rt715_sdca_update_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev);
/*
* Perform initialization only if slave status is present and
* hw_init flag is false
*/
if (rt715->hw_init || status != SDW_SLAVE_ATTACHED)
return 0;
/* perform I/O transfers required for Slave initialization */
return rt715_sdca_io_init(&slave->dev, slave);
}
static int rt715_sdca_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->paging_support = true;
/* first we need to allocate memory for set bits in port lists */
prop->source_ports = 0x50;/* BITMAP: 01010000 */
prop->sink_ports = 0x0; /* BITMAP: 00000000 */
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;
dpn = prop->src_dpn_prop;
i = 0;
addr = prop->source_ports;
for_each_set_bit(bit, &addr, 32) {
dpn[i].num = bit;
dpn[i].simple_ch_prep_sm = true;
dpn[i].ch_prep_timeout = 10;
i++;
}
/* set the timeout values */
prop->clk_stop_timeout = 200;
return 0;
}
static const struct sdw_slave_ops rt715_sdca_slave_ops = {
.read_prop = rt715_sdca_read_prop,
.update_status = rt715_sdca_update_status,
};
static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
const struct sdw_device_id *id)
{
struct regmap *mbq_regmap, *regmap;
/* Regmap Initialization */
mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
if (IS_ERR(mbq_regmap))
return PTR_ERR(mbq_regmap);
regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
}
static int rt715_sdca_sdw_remove(struct sdw_slave *slave)
{
pm_runtime_disable(&slave->dev);
return 0;
}
static const struct sdw_device_id rt715_sdca_id[] = {
SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0),
SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0),
{},
};
MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);
static int __maybe_unused rt715_dev_suspend(struct device *dev)
{
struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
if (!rt715->hw_init)
return 0;
regcache_cache_only(rt715->regmap, true);
regcache_mark_dirty(rt715->regmap);
regcache_cache_only(rt715->mbq_regmap, true);
regcache_mark_dirty(rt715->mbq_regmap);
return 0;
}
#define RT715_PROBE_TIMEOUT 5000
static int __maybe_unused rt715_dev_resume(struct device *dev)
{
struct sdw_slave *slave = dev_to_sdw_dev(dev);
struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
unsigned long time;
if (!rt715->first_hw_init)
return 0;
if (!slave->unattach_request)
goto regmap_sync;
time = wait_for_completion_timeout(&slave->initialization_complete,
msecs_to_jiffies(RT715_PROBE_TIMEOUT));
if (!time) {
dev_err(&slave->dev, "%s: Initialization not complete, timed out\n", __func__);
sdw_show_ping_status(slave->bus, true);
return -ETIMEDOUT;
}
regmap_sync:
slave->unattach_request = 0;
regcache_cache_only(rt715->regmap, false);
regcache_sync_region(rt715->regmap,
SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
CH_00),
SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
regcache_cache_only(rt715->mbq_regmap, false);
regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff);
regcache_sync_region(rt715->mbq_regmap,
SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
CH_00),
SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
return 0;
}
static const struct dev_pm_ops rt715_pm = {
SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume)
SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL)
};
static struct sdw_driver rt715_sdw_driver = {
.driver = {
.name = "rt715-sdca",
.pm = &rt715_pm,
},
.probe = rt715_sdca_sdw_probe,
.remove = rt715_sdca_sdw_remove,
.ops = &rt715_sdca_slave_ops,
.id_table = rt715_sdca_id,
};
module_sdw_driver(rt715_sdw_driver);
MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
MODULE_AUTHOR("Jack Yu <[email protected]>");
MODULE_LICENSE("GPL v2");
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