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authorLouis Yu <louis.yu@mediatek.com>2017-08-01 15:28:31 +0800
committerZhang Rui <rui.zhang@intel.com>2017-08-31 21:13:43 +0800
commit6cf7f002e70773fc11d032628edd2ecc679fe05b (patch)
treebd102cc6fdfd79883c06783a16614c7b3db9dccb /drivers/thermal
parentf09517ab172e919366d730fcf765f17eaada058b (diff)
downloadlinux-6cf7f002e70773fc11d032628edd2ecc679fe05b.tar.bz2
thermal: mediatek: add Mediatek thermal driver for mt2712
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>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/mtk_thermal.c70
1 files changed, 66 insertions, 4 deletions
diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 7737f14846f9..e35d28d4e8f8 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -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
@@ -278,6 +310,31 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
};
/**
+ * 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
* @raw: raw ADC value
@@ -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>");