leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

thermal: mediatek: add Mediatek thermal driver for mt2712

Browse Source 
This patch adds support for mt2712 chip to mtk_thermal,
and integrate mt2712 into the same mediatek thermal driver.
MT2712 has only 1 bank and 4 sensors.

Signed-off-by: Louis Yu <louis.yu@mediatek.com>
Reviewed-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Louis Yu 2017-08-01 15:28:31 +08:00 committed by Zhang Rui
parent f09517ab17
commit 6cf7f002e7
1 changed files with 66 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/thermal/mtk_thermal.c
View File

@ -3,6 +3,7 @@
* Author: Hanyi Wu <hanyi.wu@mediatek.com>
* Sascha Hauer <s.hauer@pengutronix.de>
* Dawei Chien <dawei.chien@mediatek.com>
* Louis Yu <louis.yu@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -111,9 +112,10 @@
/*
* Layout of the fuses providing the calibration data
* These macros could be used for both MT8173 and MT2701.
* These macros could be used for both MT8173, MT2701, and MT2712.
* MT8173 has five sensors and need five VTS calibration data,
* and MT2701 has three sensors and need three VTS calibration data.
* and MT2701 has three sensors and need three VTS calibration data,
* and MT2712 has four sensors and need four VTS calibration data.
*/
#define MT8173_CALIB_BUF0_VALID BIT(0)
#define MT8173_CALIB_BUF1_ADC_GE(x) (((x) >> 22) & 0x3ff)
@ -136,11 +138,26 @@
/* The total number of temperature sensors in the MT2701 */
#define MT2701_NUM_SENSORS 3
#define THERMAL_NAME "mtk-thermal"
/* The number of sensing points per bank */
#define MT2701_NUM_SENSORS_PER_ZONE 3
/* MT2712 thermal sensors */
#define MT2712_TS1 0
#define MT2712_TS2 1
#define MT2712_TS3 2
#define MT2712_TS4 3
/* AUXADC channel 11 is used for the temperature sensors */
#define MT2712_TEMP_AUXADC_CHANNEL 11
/* The total number of temperature sensors in the MT2712 */
#define MT2712_NUM_SENSORS 4
/* The number of sensing points per bank */
#define MT2712_NUM_SENSORS_PER_ZONE 4
#define THERMAL_NAME "mtk-thermal"
struct mtk_thermal;
struct thermal_bank_cfg {
@ -215,6 +232,21 @@ static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
/* MT2712 thermal sensor data */
static const int mt2712_bank_data[MT2712_NUM_SENSORS] = {
MT2712_TS1, MT2712_TS2, MT2712_TS3, MT2712_TS4
};
static const int mt2712_msr[MT2712_NUM_SENSORS_PER_ZONE] = {
TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
};
static const int mt2712_adcpnp[MT2712_NUM_SENSORS_PER_ZONE] = {
TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
};
static const int mt2712_mux_values[MT2712_NUM_SENSORS] = { 0, 1, 2, 3 };
/**
* The MT8173 thermal controller has four banks. Each bank can read up to
* four temperature sensors simultaneously. The MT8173 has a total of 5
@ -277,6 +309,31 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
.sensor_mux_values = mt2701_mux_values,
};
/**
* The MT2712 thermal controller has one bank, which can read up to
* four temperature sensors simultaneously. The MT2712 has a total of 4
* temperature sensors.
*
* The thermal core only gets the maximum temperature of this one bank,
* so the bank concept wouldn't be necessary here. However, the SVS (Smart
* Voltage Scaling) unit makes its decisions based on the same bank
* data.
*/
static const struct mtk_thermal_data mt2712_thermal_data = {
.auxadc_channel = MT2712_TEMP_AUXADC_CHANNEL,
.num_banks = 1,
.num_sensors = MT2712_NUM_SENSORS,
.bank_data = {
{
.num_sensors = 4,
.sensors = mt2712_bank_data,
},
},
.msr = mt2712_msr,
.adcpnp = mt2712_adcpnp,
.sensor_mux_values = mt2712_mux_values,
};
/**
* raw_to_mcelsius - convert a raw ADC value to mcelsius
* @mt: The thermal controller
@ -571,6 +628,10 @@ static const struct of_device_id mtk_thermal_of_match[] = {
{
.compatible = "mediatek,mt2701-thermal",
.data = (void *)&mt2701_thermal_data,
},
{
.compatible = "mediatek,mt2712-thermal",
.data = (void *)&mt2712_thermal_data,
}, {
},
};
@ -705,6 +766,7 @@ static struct platform_driver mtk_thermal_driver = {
module_platform_driver(mtk_thermal_driver);
MODULE_AUTHOR("Louis Yu <louis.yu@mediatek.com>");
MODULE_AUTHOR("Dawei Chien <dawei.chien@mediatek.com>");
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
MODULE_AUTHOR("Hanyi Wu <hanyi.wu@mediatek.com>");