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|
// 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/module.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 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 >>
|