// SPDX-License-Identifier: GPL-2.0
/*
* rt715-sdw.c -- rt715 ALSA SoC audio driver
*
* Copyright(c) 2019 Realtek Semiconductor Corp.
*
* ALC715 ASoC Codec Driver based Intel Dummy SdW codec driver
*
*/
#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/of.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "rt715.h"
#include "rt715-sdw.h"
static bool rt715_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x00e0 ... 0x00e5:
case 0x00ee ... 0x00ef:
case 0x00f0 ... 0x00f5:
case 0x00fe ... 0x00ff:
case 0x02e0:
case 0x02f0:
case 0x04e0:
case 0x04f0:
case 0x06e0:
case 0x06f0:
case 0x2000 ... 0x2016:
case 0x201a ... 0x2027:
case 0x2029 ... 0x202a:
case 0x202d ... 0x2034:
case 0x2200 ... 0x2204:
case 0x2206 ... 0x2212:
case 0x2220 ... 0x2223:
case 0x2230 ... 0x2239:
case 0x22f0 ... 0x22f3:
case 0x3122:
case 0x3123:
case 0x3124:
case 0x3125:
case 0x3607:
case 0x3608:
case 0x3609:
case 0x3610:
case 0x3611:
case 0x3627:
case 0x3712:
case 0x3713:
case 0x3718:
case 0x3719:
case 0x371a:
case 0x371b:
case 0x371d:
case 0x3729:
case 0x385e:
case 0x3859:
case 0x4c12:
case 0x4c13:
case 0x4c1d:
case 0x4c29:
case 0x4d12:
case 0x4d13:
case 0x4d1d:
case 0x4d29:
case 0x4e12:
case 0x4e13:
case 0x4e1d:
case 0x4e29:
case 0x4f12:
case 0x4f13:
case 0x4f1d:
case 0x4f29:
case 0x7207:
case 0x7208:
case 0x7209:
case 0x7227:
case 0x7307:
case 0x7308:
case 0x7309:
case 0x7312:
case 0x7313:
case 0x7318:
case 0x7319:
case 0x731a:
case 0x731b:
case 0x731d:
case 0x7327:
case 0x7329:
case 0x8287:
case 0x8288:
case 0x8289:
case 0x82a7:
case 0x8387:
case 0x8388:
case 0x8389:
case 0x8392:
case 0x8393:
case 0x8398:
case 0x8399:
case 0x839a:
case 0x839b:
case 0x839d:
case 0x83a7:
case 0x83a9:
case 0x752001:
case 0x752039:
return true;
default:
return false;
}
}
static bool rt715_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0x00e5:
case 0x00f0:
case 0x00f3:
case 0x00f5:
case 0x2009:
case 0x2016:
case 0x201b:
case 0x201c:
case 0x201d:
case 0x201f:
case 0x2023:
case 0x2230:
case 0x200b ... 0x200e: /* i2c read */
case 0x2012 ... 0x2015: /* HD-A read */
case 0x202d ... 0x202f: /* BRA */
case 0x2201 ... 0x2212: /* i2c debug */
case 0x2220 ... 0x2223: /* decoded HD-A */
return true;
default:
return false;
}
}
static int rt715_sdw_read(void *context, unsigned int reg, unsigned int *val)
{
struct device *dev = context;
struct rt715_priv *rt715 = dev_get_drvdata(dev);
unsigned int sdw_data_3, sdw_data_2, sdw_data_1, sdw_data_0;
unsigned int reg2 = 0, reg3 = 0, reg4 = 0, mask, nid, val2;
unsigned int is_hda_reg = 1, is_index_reg = 0;
int ret;
if (reg > 0xffff)
is_index_reg = 1;
mask = reg & 0xf000;
if (is_index_reg) { /* index registers */
val2 = reg & 0xff;
reg = reg >> 8;
nid = reg & 0xff;
ret = regmap_write(rt715->sdw_regmap, reg, 0);
if (ret < 0)
return ret;
reg2 = reg + 0x1000;
reg2 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg2, val2);
if (ret < 0)
return ret;
reg3 = RT715_PRIV_DATA_R_H | nid;
ret = regmap_write(rt715->sdw_regmap, reg3,
((*val >> 8) & 0xff));
if (ret < 0)
return ret;
reg4 = reg3 + 0x1000;
reg4 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg4, (*val & 0xff));
if (ret < 0)
return ret;
} else if (mask == 0x3000) {
reg += 0x8000;
ret = regmap_write(rt715->sdw_regmap, reg, *val);
if (ret < 0)
return ret;
} else if (mask == 0x7000) {
reg += 0x2000;
reg |= 0x800;
ret = regmap_write(rt715->sdw_regmap, reg,
((*val >> 8) & 0xff));
if (ret < 0)
return ret;
reg2 = reg + 0x1000;
reg2 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg2, (*val & 0xff));
if (ret < 0)
return ret;
} else if ((reg & 0xff00) == 0x8300) { /* for R channel */
reg2 = reg - 0x1000;
reg2 &= ~0x80;
ret = regmap_write(rt715->sdw_regmap, reg2,
((*val >> 8) & 0xff));
if (ret < 0)
return ret;
ret = regmap_write(rt715->sdw_regmap, reg, (*val & 0xff));
if (ret < 0)
return ret;
} else if (mask == 0x9000) {
ret = regmap_write(rt715->sdw_regmap, reg,
((*val >> 8) & 0xff));
if (ret < 0)
return ret;
reg2 = reg + 0x1000;
reg2 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg2, (*val & 0xff));
if (ret < 0)
return ret;
} else if (mask == 0xb000) {
ret = regmap_write(rt715->sdw_regmap, reg, *val);
if (ret < 0)
return ret;
} else {
ret = regmap_read(rt715->sdw_regmap, reg, val);
if (ret < 0)
return ret;
is_hda_reg = 0;
}
if (is_hda_reg || is_index_reg) {
sdw_data_3 = 0;
sdw_data_2 = 0;
sdw_data_1 = 0;
sdw_data_0 = 0;
ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_3,
&sdw_data_3);
if (ret < 0)
return ret;
ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_2,
&sdw_data_2);
if (ret < 0)
return ret;
ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_1,
&sdw_data_1);
if (ret < 0)
return ret;
ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_0,
&sdw_data_0);
if (ret < 0)
return ret;
*val = ((sdw_data_3 & 0xff) << 24) |
((sdw_data_2 & 0xff) << 16) |
((sdw_data_1 & 0xff) << 8) | (sdw_data_0 & 0xff);
}
if (is_hda_reg == 0)
dev_dbg(dev, "[%s] %04x => %08x\n", __func__, reg, *val);
else if (is_index_reg)
dev_dbg(dev, "[%s] %04x %04x %04x %04x => %08x\n", __func__,
reg, reg2, reg3, reg4, *val);
else
dev_dbg(dev, "[%s] %04x %04x => %08x\n",
__func__, reg, reg2, *val);
return 0;
}
static int rt715_sdw_write(void *context, unsigned int reg, unsigned int val)
{
struct device *dev = context;
struct rt715_priv *rt715 = dev_get_drvdata(dev);
unsigned int reg2 = 0, reg3, reg4, nid, mask, val2;
unsigned int is_index_reg = 0;
int ret;
if (reg > 0xffff)
is_index_reg = 1;
mask = reg & 0xf000;
if (is_index_reg) { /* index registers */
val2 = reg & 0xff;
reg = reg >> 8;
nid = reg & 0xff;
ret = regmap_write(rt715->sdw_regmap, reg, 0);
if (ret < 0)
return ret;
reg2 = reg + 0x1000;
reg2 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg2, val2);
if (ret < 0)
return ret;
reg3 = RT715_PRIV_DATA_W_H | nid;
ret = regmap_write(rt715->sdw_regmap, reg3,
((val >> 8) & 0xff));
if (ret < 0)
return ret;
reg4 = reg3 + 0x1000;
reg4 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg4, (val & 0xff));
if (ret < 0)
return ret;
is_index_reg = 1;
} else if (reg < 0x4fff) {
ret = regmap_write(rt715->sdw_regmap, reg, val);
if (ret < 0)
return ret;
} else if (reg == RT715_FUNC_RESET) {
ret = regmap_write(rt715->sdw_regmap, reg, val);
if (ret < 0)
return ret;
} else if (mask == 0x7000) {
ret = regmap_write(rt715->sdw_regmap, reg,
((val >> 8) & 0xff));
if (ret < 0)
return ret;
reg2 = reg + 0x1000;
reg2 |= 0x80;
ret = regmap_write(rt715->sdw_regmap, reg2, (val & 0xff));
if (ret < 0)
return ret;
} else if ((reg & 0xff00) == 0x8300) { /* for R channel */
reg2 = reg - 0x1000;
reg2 &= ~0x80;
ret = regmap_write(rt715->sdw_regmap, reg2,
((val >> 8) & 0xff));
if (ret < 0)
return ret;
ret = regmap_write(rt715->sdw_regmap, reg, (val & 0xff));
if (ret < 0)
return ret;
}
if (reg2 == 0)
dev_dbg(dev, "[%s] %04x <= %04x\n", __func__, reg, val);
else if (is_index_reg)
dev_dbg(dev, "[%s] %04x %04x %04x %04x <= %04x %04x\n",
__func__, reg, reg2, reg3, reg4, val2, val);
else
dev_dbg(dev, "[%s] %04x %04x <= %04x\n",
__func__, reg, reg2, val);
return 0;
}
static const struct regmap_config rt715_regmap = {
.reg_bits = 24,
.val_bits = 32,
.readable_reg = rt715_readable_register, /* Readable registers */
.volatile_reg = rt715_volatile_register, /* volatile register */
.max_register = 0x752039, /* Maximum number of register */
.reg_defaults = rt715_reg_defaults, /* Defaults */
.num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults),
.cache_type = REGCACHE_MAPLE,
.use_single_read = true,
.use_single_write = true,
.reg_read = rt715_sdw_read,
.reg_write = rt715_sdw_write,
};
static const struct regmap_config rt715_sdw_regmap = {
.name = "sdw",
.reg_bits = 32, /* Total register space for SDW */
.val_bits = 8, /* Total number of bits in register */
.max_register = 0xff01, /* Maximum number of register */
.cache_type = REGCACHE_NONE,
.use_single_read = true,
.use_single_write = true,
};
int hda_to_sdw(unsigned int nid, unsigned int verb, unsigned int payload,
unsigned int *sdw_addr_h, unsigned int *sdw_data_h,
unsigned int *sdw_addr_l, unsigned int *sdw_data_l)
{
unsigned int offset_h, offset_l, e_verb;
if (((verb & 0xff) != 0) || verb == 0xf00) { /* 12 bits command */
if (verb == 0x7ff) /* special case */
offset_h = 0;
else
offset_h = 0x3000;
if (verb & 0x800) /* get command */
e_verb = (verb - 0xf00) | 0x80;
else /* set command */
e_verb = (verb - 0x700);
*sdw_data_h = payload; /* 7 bits payload */
*sdw_addr_l = *sdw_data_l = 0;
} else { /* 4 bits command */
if ((verb & 0x800) == 0x800) { /* read */
offset_h = 0x9000;
offset_l = 0xa000;
} else { /* write */
offset_h = 0x7000;
offset_l = 0x8000;
}
e_verb = verb >> 8;
*sdw_data_h = (payload >> 8); /* 16 bits payload [15:8] */
*sdw_addr_l = (e_verb << 8) | nid | 0x80; /* 0x80: valid bit */
*sdw_addr_l += offset_l;
*sdw_data_l = payload & 0xff;
}
*sdw_addr_h = (e_verb << 8) | nid;
*sdw_addr_h += offset_h;
return 0;
}
EXPORT_SYMBOL(hda_to_sdw);
static int rt715_update_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
struct rt715_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_io_init(&slave->dev, slave);
}
static int rt715_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 = 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 = 20;
/* wake-up event */
prop->wake_capable = 1;
return 0;
}
static int rt715_bus_config(struct sdw_slave *slave,
struct sdw_bus_params *params)
{
struct rt715_priv *rt715 = dev_get_drvdata(&slave->dev);
int ret;
memcpy(&rt715->params, params, sizeof(*params));
ret = rt715_clock_config(&slave->dev);
if (ret < 0)
dev_err(&slave->dev, "%s: Invalid clk config", __func__);
return 0;
}
static const struct sdw_slave_ops rt715_slave_ops = {
.read_prop = rt715_read_prop,
.update_status = rt715_update_status,
.bus_config = rt715_bus_config,
};
static int rt715_sdw_probe(struct sdw_slave *slave,
const struct sdw_device_id *id)
{
struct regmap *sdw_regmap, *regmap;
/* Regmap Initialization */
sdw_regmap = devm_regmap_init_sdw(slave, &rt715_sdw_regmap);
if (IS_ERR(sdw_regmap))
return PTR_ERR(sdw_regmap);
regmap = devm_regmap_init(&slave->dev, NULL, &slave->dev,
&rt715_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
return rt715_init(&slave->dev, sdw_regmap, regmap, slave);
}
static int rt715_sdw_remove(struct sdw_slave *slave)
{
pm_runtime_disable(&slave->dev);
return 0;
}
static const struct sdw_device_id rt715_id[] = {
SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x2, 0, 0),
SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x2, 0, 0),
{},
};
MODULE_DEVICE_TABLE(sdw, rt715_id);
static int __maybe_unused rt715_dev_suspend(struct device *dev)
{
struct rt715_priv *rt715 = dev_get_drvdata(dev);
if (!rt715->hw_init)
return 0;
regcache_cache_only(rt715->regmap, true);
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_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, 0x3000, 0x8fff);
regcache_sync_region(rt715->regmap, 0x752039, 0x752039);
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",
.pm = &rt715_pm,
},
.probe = rt715_sdw_probe,
.remove = rt715_sdw_remove,
.ops = &rt715_slave_ops,
.id_table = rt715_id,
};
module_sdw_driver(rt715_sdw_driver);
MODULE_DESCRIPTION("ASoC RT715 driver SDW");
MODULE_AUTHOR("Jack Yu <[email protected]>");
MODULE_LICENSE("GPL v2");
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