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cxd2858er.c
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cxd2858er.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Sony CXD2858ER driver (cxd2858er.c)
*
* Copyright (c) 2018-2021 nns779
*/
#include "print_format.h"
#include "cxd2858er.h"
#ifdef __linux__
#include <linux/delay.h>
#endif
static int cxd2858er_stop_t(struct cxd2858er_tuner *tuner);
static int cxd2858er_stop_s(struct cxd2858er_tuner *tuner);
static int cxd2858er_read_regs(struct cxd2858er_tuner *tuner,
u8 reg, u8 *buf, int len)
{
u8 b;
struct i2c_comm_request req[2];
if (!buf || !len)
return -EINVAL;
b = reg;
req[0].req = I2C_WRITE_REQUEST;
req[0].addr = tuner->i2c_addr;
req[0].data = &b;
req[0].len = 1;
req[1].req = I2C_READ_REQUEST;
req[1].addr = tuner->i2c_addr;
req[1].data = buf;
req[1].len = len;
return i2c_comm_master_request(tuner->i2c, req, 2);
}
static int cxd2858er_read_reg(struct cxd2858er_tuner *tuner,
u8 reg, u8 *val)
{
return cxd2858er_read_regs(tuner, reg, val, 1);
}
static int cxd2858er_write_regs(struct cxd2858er_tuner *tuner,
u8 reg, u8 *buf, int len)
{
u8 b[255];
struct i2c_comm_request req[1];
if (!buf || !len || len > 254)
return -EINVAL;
b[0] = reg;
memcpy(&b[1], buf, len);
req[0].req = I2C_WRITE_REQUEST;
req[0].addr = tuner->i2c_addr;
req[0].data = b;
req[0].len = 1 + len;
return i2c_comm_master_request(tuner->i2c, req, 1);
}
static int cxd2858er_write_reg(struct cxd2858er_tuner *tuner,
u8 reg, u8 val)
{
return cxd2858er_write_regs(tuner, reg, &val, 1);
}
static int cxd2858er_write_reg_mask(struct cxd2858er_tuner *tuner,
u8 reg, u8 val, u8 mask)
{
int ret = 0;
u8 tmp;
if (!mask)
return -EINVAL;
if (mask != 0xff) {
ret = cxd2858er_read_regs(tuner, reg, &tmp, 1);
if (ret)
return ret;
tmp &= ~mask;
tmp |= (val & mask);
} else {
tmp = val;
}
return cxd2858er_write_regs(tuner, reg, &tmp, 1);
}
static int cxd2858er_power_on(struct cxd2858er_tuner *tuner)
{
int ret = 0;
u8 data[20], tmp;
/* T mode */
ret = cxd2858er_write_reg(tuner, 0x01, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x67, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x43,
0x05 | ((tuner->config.ter.lna) ? 0x02
: 0x00));
if (ret)
return ret;
data[0] = 0x15;
data[1] = 0x00;
data[2] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x5e, data, 3);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x0c, 0x14);
if (ret)
return ret;
data[0] = 0x7a;
data[1] = 0x01;
ret = cxd2858er_write_regs(tuner, 0x99, data, 2);
if (ret)
return ret;
switch (tuner->config.xtal) {
case 16000:
data[0] = 0x10;
break;
case 24000:
data[0] = 0x18;
break;
default:
return -EINVAL;
}
data[1] = 0x80 | (0x04 & 0x1f);
data[2] = 0x80 | 0x26;
data[3] = 0x00;
data[4] = 0x00;
data[5] = 0x00;
data[6] = 0xc4;
data[7] = 0x40;
data[8] = 0x10;
data[9] = 0x00;
data[10] = 0x45;
data[11] = 0x75;
data[12] = 0x07;
data[13] = 0x1c;
data[14] = 0x3f;
data[15] = 0x02;
data[16] = 0x10;
data[17] = 0x20;
data[18] = 0x0a;
data[19] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x81, data, 20);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x9b, 0x00);
if (ret)
return ret;
msleep(10);
ret = cxd2858er_read_reg(tuner, 0x1a, &tmp);
if (ret)
return ret;
if (tmp != 0x00)
return -EIO;
data[0] = 0x90;
data[1] = 0x06;
ret = cxd2858er_write_regs(tuner, 0x17, data, 2);
if (ret)
return ret;
msleep(1);
ret = cxd2858er_read_reg(tuner, 0x19, &tmp);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x95, (tmp & 0xf0) >> 4);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x74, 0x02);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x88, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x87, 0xc0);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x80, 0x01);
if (ret)
return ret;
data[0] = 0x07;
data[1] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x41, data, 2);
if (ret)
return ret;
return 0;
}
int cxd2858er_init(struct cxd2858er_tuner *tuner)
{
int ret = 0;
if (!tuner->dev || !tuner->i2c || !tuner->i2c_addr)
return -EINVAL;
if (tuner->config.xtal != 16000 && tuner->config.xtal != 24000)
return -EINVAL;
tuner->system = CXD2858ER_UNSPECIFIED_SYSTEM;
ret = i2c_comm_master_gate_ctrl(tuner->i2c, true);
if (ret)
return ret;
ret = cxd2858er_power_on(tuner);
i2c_comm_master_gate_ctrl(tuner->i2c, false);
return ret;
}
int cxd2858er_term(struct cxd2858er_tuner *tuner)
{
int ret = 0;
if (tuner->system == CXD2858ER_UNSPECIFIED_SYSTEM)
return 0;
ret = i2c_comm_master_gate_ctrl(tuner->i2c, true);
if (!ret) {
switch (tuner->system) {
case CXD2858ER_ISDB_T_SYSTEM:
cxd2858er_stop_t(tuner);
break;
case CXD2858ER_ISDB_S_SYSTEM:
cxd2858er_stop_s(tuner);
break;
default:
break;
}
i2c_comm_master_gate_ctrl(tuner->i2c, false);
} else {
tuner->system = CXD2858ER_UNSPECIFIED_SYSTEM;
}
return 0;
}
int cxd2858er_set_params_t(struct cxd2858er_tuner *tuner,
enum cxd2858er_system system,
u32 freq, u32 bandwidth)
{
int ret = 0;
u8 data[17];
if (system != CXD2858ER_ISDB_T_SYSTEM)
return -EINVAL;
ret = i2c_comm_master_gate_ctrl(tuner->i2c, true);
if (ret)
return ret;
switch (tuner->system) {
case CXD2858ER_ISDB_S_SYSTEM:
ret = cxd2858er_stop_s(tuner);
break;
default:
break;
}
if (ret)
goto exit;
/* T mode */
ret = cxd2858er_write_reg(tuner, 0x01, 0x00);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x74, 0x02);
if (ret)
goto exit;
data[0] = 0xc4;
data[1] = 0x40;
ret = cxd2858er_write_regs(tuner, 0x87, data, 2);
if (ret)
goto exit;
data[0] = 0x10;
data[1] = 0x20;
ret = cxd2858er_write_regs(tuner, 0x91, data, 2);
if (ret)
goto exit;
data[0] = 0x00;
data[1] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x9c, data, 2);
if (ret)
goto exit;
data[0] = 0xee;
data[1] = 0x02;
data[2] = 0x1e;
data[3] = 0x67;
switch (tuner->config.xtal) {
case 16000:
data[4] = 0x02;
break;
case 24000:
data[4] = 0x03;
break;
default:
ret = -EINVAL;
goto exit;
}
data[5] = 0xb4;
data[6] = 0x78;
data[7] = 0x08;
data[8] = 0x30;
ret = cxd2858er_write_regs(tuner, 0x5e, data, 9);
if (ret)
goto exit;
ret = cxd2858er_write_reg_mask(tuner, 0x67, 0x00, 0x02);
if (ret)
goto exit;
data[0] = 0x00;
data[1] = 0x88;
data[2] = 0x00;
data[3] = 0x0b;
data[4] = 0x22;
data[5] = 0x00;
data[6] = 0x17;
data[7] = 0x1b;
data[8] = freq & 0xff;
data[9] = (freq >> 8) & 0xff;
data[10] = (freq >> 16) & 0x0f;
data[11] = 0xff;
data[12] = 0x01;
data[13] = 0x99;
data[14] = 0x00;
data[15] = 0x24;
data[16] = 0x87;
ret = cxd2858er_write_regs(tuner, 0x68, data, 17);
if (ret)
goto exit;
msleep(50);
ret = cxd2858er_write_reg(tuner, 0x88, 0x00);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x87, 0xc0);
if (ret)
goto exit;
tuner->system = system;
exit:
i2c_comm_master_gate_ctrl(tuner->i2c, false);
return ret;
}
int cxd2858er_set_params_s(struct cxd2858er_tuner *tuner,
enum cxd2858er_system system,
u32 freq, u32 symbol_rate)
{
int ret = 0;
u8 data[18];
if (system != CXD2858ER_ISDB_S_SYSTEM)
return -EINVAL;
ret = i2c_comm_master_gate_ctrl(tuner->i2c, true);
if (ret)
return ret;
switch (tuner->system) {
case CXD2858ER_ISDB_T_SYSTEM:
ret = cxd2858er_stop_t(tuner);
break;
default:
break;
}
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x15, 0x02);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x43, 0x06);
if (ret)
goto exit;
data[0] = 0x00;
data[1] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x6a, data, 2);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x75, 0x99);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x9d, 0x00);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x61, 0x07);
if (ret)
goto exit;
/* S mode */
ret = cxd2858er_write_reg(tuner, 0x01, 0x01);
if (ret)
goto exit;
data[0] = 0xc4;
data[1] = 0x40;
switch (tuner->config.xtal) {
case 16000:
data[2] = 0x02;
break;
case 24000:
data[2] = 0x03;
break;
default:
ret = -EINVAL;
goto exit;
}
data[3] = 0x00;
data[4] = 0xb4;
data[5] = 0x78;
data[6] = 0x08;
data[7] = 0x30;
data[8] = 0xfe | ((tuner->config.sat.lna) ? 0x01 : 0x00);
data[9] = 0x02;
data[10] = 0x1e;
switch (system) {
case CXD2858ER_ISDB_S_SYSTEM:
data[11] = 0x16;
break;
default:
ret = -EINVAL;
goto exit;
}
freq = (freq + 2) / 4;
data[12] = freq & 0xff;
data[13] = (freq >> 8) & 0xff;
data[14] = (freq >> 16) & 0x0f;
data[15] = 0xff;
data[16] = 0x00;
data[17] = 0x01;
ret = cxd2858er_write_regs(tuner, 0x04, data, 18);
if (ret)
goto exit;
msleep(10);
ret = cxd2858er_write_reg(tuner, 0x05, 0x00);
if (ret)
goto exit;
ret = cxd2858er_write_reg(tuner, 0x04, 0xc0);
if (ret)
goto exit;
tuner->system = system;
exit:
i2c_comm_master_gate_ctrl(tuner->i2c, false);
return ret;
}
static int cxd2858er_stop_t(struct cxd2858er_tuner *tuner)
{
int ret = 0;
u8 data[3];
if (tuner->system != CXD2858ER_ISDB_T_SYSTEM)
return -EINVAL;
ret = cxd2858er_write_reg(tuner, 0x74, 0x02);
if (ret)
return ret;
ret = cxd2858er_write_reg_mask(tuner, 0x67, 0x00, 0xfe);
if (ret)
return ret;
data[0] = 0x15;
data[1] = 0x00;
data[2] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x5e, data, 3);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x88, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x87, 0xc0);
if (ret)
return ret;
tuner->system = CXD2858ER_UNSPECIFIED_SYSTEM;
return 0;
}
static int cxd2858er_stop_s(struct cxd2858er_tuner *tuner)
{
int ret = 0;
u8 data[3];
if (tuner->system != CXD2858ER_ISDB_S_SYSTEM)
return -EINVAL;
ret = cxd2858er_write_reg(tuner, 0x15, 0x02);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x43,
0x05 | ((tuner->config.ter.lna) ? 0x02
: 0x00));
if (ret)
return ret;
data[0] = 0x14;
data[1] = 0x00;
data[2] = 0x00;
ret = cxd2858er_write_regs(tuner, 0x0c, data, 3);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x01, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x05, 0x00);
if (ret)
return ret;
ret = cxd2858er_write_reg(tuner, 0x04, 0xc0);
if (ret)
return ret;
tuner->system = CXD2858ER_UNSPECIFIED_SYSTEM;
return 0;
}
int cxd2858er_stop(struct cxd2858er_tuner *tuner)
{
int ret = 0;
if (tuner->system == CXD2858ER_UNSPECIFIED_SYSTEM)
return -EALREADY;
ret = i2c_comm_master_gate_ctrl(tuner->i2c, true);
if (ret)
return ret;
switch (tuner->system) {
case CXD2858ER_ISDB_T_SYSTEM:
cxd2858er_stop_t(tuner);
break;
case CXD2858ER_ISDB_S_SYSTEM:
cxd2858er_stop_s(tuner);
break;
default:
break;
}
i2c_comm_master_gate_ctrl(tuner->i2c, false);
return 0;
}