66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
|
|
* SOC/PCB Temperature driver for Nintendo Switch's TI TMP451
|
|
*
|
|
* Copyright (c) 2018 CTCaer
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <soc/i2c.h>
|
|
#include <thermal/tmp451.h>
|
|
|
|
u16 tmp451_get_soc_temp(bool intenger)
|
|
{
|
|
u8 val;
|
|
u16 temp = 0;
|
|
|
|
val = i2c_recv_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TEMP_REG);
|
|
if (intenger)
|
|
return val;
|
|
|
|
temp = val << 8;
|
|
val = i2c_recv_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TMP_DEC_REG);
|
|
temp |= ((val >> 4) * 625) / 100;
|
|
|
|
return temp;
|
|
}
|
|
|
|
u16 tmp451_get_pcb_temp(bool intenger)
|
|
{
|
|
u8 val;
|
|
u16 temp = 0;
|
|
|
|
val = i2c_recv_byte(I2C_1, TMP451_I2C_ADDR, TMP451_PCB_TEMP_REG);
|
|
if (intenger)
|
|
return val;
|
|
|
|
temp = val << 8;
|
|
val = i2c_recv_byte(I2C_1, TMP451_I2C_ADDR, TMP451_PCB_TMP_DEC_REG);
|
|
temp |= ((val >> 4) * 625) / 100;
|
|
|
|
return temp;
|
|
}
|
|
|
|
void tmp451_init()
|
|
{
|
|
// Disable ALARM and Range to 0 - 127 oC.
|
|
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CONFIG_REG, 0x80);
|
|
|
|
// Set conversion rate to 32/s and make a read to update the reg.
|
|
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CNV_RATE_REG, 9);
|
|
tmp451_get_soc_temp(false);
|
|
|
|
// Set rate to every 4 seconds.
|
|
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CNV_RATE_REG, 2);
|
|
}
|