[PATCH 7/7] thermal: mediatek: add support for MT8183

michael.kao
2019-02-01T07:38:54Z

MT8183 has two built-in thermal controllers with total six thermal
sensors. And it doesn't have bank, so doesn't need to select bank.
This patch adds support for mt8183.

Signed-off-by: Michael Kao <michael.kao@mediatek.com>
---
drivers/thermal/mtk_thermal.c | 98 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 97 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 3e97638..e449177 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -71,6 +71,15 @@

#define TEMP_SPARE0 0x0f0

+#define TEMP_ADCPNP0_1 0x148
+#define TEMP_ADCPNP1_1 0x14c
+#define TEMP_ADCPNP2_1 0x150
+#define TEMP_MSR0_1 0x190
+#define TEMP_MSR1_1 0x194
+#define TEMP_MSR2_1 0x198
+#define TEMP_ADCPNP3_1 0x1b4
+#define TEMP_MSR3_1 0x1B8
+
#define PTPCORESEL 0x400

#define TEMP_MONCTL1_PERIOD_UNIT(x) ((x) & 0x3ff)
@@ -113,7 +122,8 @@

/*
* Layout of the fuses providing the calibration data
- * These macros could be used for MT8173, MT2701, and MT2712.
+ * These macros could be used for MT8183, MT8173, MT2701, and MT2712.
+ * MT8183 has 6 sensors and needs 6 VTS calibration data.
* MT8173 has 5 sensors and needs 5 VTS calibration data.
* MT2701 has 3 sensors and needs 3 VTS calibration data.
* MT2712 has 4 sensors and needs 4 VTS calibration data.
@@ -124,6 +134,7 @@
#define CALIB_BUF0_VTS_TS2(x) (((x) >> 8) & 0x1ff)
#define CALIB_BUF1_VTS_TS3(x) (((x) >> 0) & 0x1ff)
#define CALIB_BUF2_VTS_TS4(x) (((x) >> 23) & 0x1ff)
+#define CALIB_BUF2_VTS_TS5(x) (((x) >> 5) & 0x1ff)
#define CALIB_BUF2_VTS_TSABB(x) (((x) >> 14) & 0x1ff)
#define CALIB_BUF0_DEGC_CALI(x) (((x) >> 1) & 0x3f)
#define CALIB_BUF0_O_SLOPE(x) (((x) >> 26) & 0x3f)
@@ -135,6 +146,7 @@ enum {
VTS2,
VTS3,
VTS4,
+ VTS5,
VTSABB,
MAX_NUM_VTS,
};
@@ -190,6 +202,29 @@ enum {
/* The calibration coefficient of sensor */
#define MT7622_CALIBRATION 165

+/* MT8183 thermal sensors */
+#define MT8183_TS1 0
+#define MT8183_TS2 1
+#define MT8183_TS3 2
+#define MT8183_TS4 3
+#define MT8183_TS5 4
+#define MT8183_TSABB 5
+
+/* AUXADC channel is used for the temperature sensors */
+#define MT8183_TEMP_AUXADC_CHANNEL 11
+
+/* The total number of temperature sensors in the MT8183 */
+#define MT8183_NUM_SENSORS 6
+
+/* The number of sensing points per bank */
+#define MT8183_NUM_SENSORS_PER_ZONE 6
+
+/* The number of controller in the MT8183 */
+#define MT8183_NUM_CONTROLLER 2
+
+/* The calibration coefficient of sensor */
+#define MT8183_CALIBRATION 153
+
struct mtk_thermal;

struct thermal_bank_cfg {
@@ -236,6 +271,27 @@ struct mtk_thermal {
struct mtk_thermal_bank banks[];
};

+/* MT8183 thermal sensor data */
+static const int mt8183_bank_data[MT8183_NUM_SENSORS] = {
+ MT8183_TS1, MT8183_TS2, MT8183_TS3, MT8183_TS4, MT8183_TS5, MT8183_TSABB
+};
+
+static const int mt8183_msr[MT8183_NUM_SENSORS_PER_ZONE] = {
+ TEMP_MSR0_1, TEMP_MSR1_1, TEMP_MSR2_1, TEMP_MSR1, TEMP_MSR0, TEMP_MSR3_1
+};
+
+static const int mt8183_adcpnp[MT8183_NUM_SENSORS_PER_ZONE] = {
+ TEMP_ADCPNP0_1, TEMP_ADCPNP1_1, TEMP_ADCPNP2_1,
+ TEMP_ADCPNP1, TEMP_ADCPNP0, TEMP_ADCPNP3_1
+};
+
+static const int mt8183_mux_values[MT8183_NUM_SENSORS] = { 0, 1, 2, 3, 4, 0 };
+static const int mt8183_tc_offset[MT8183_NUM_CONTROLLER] = {0x0, 0x100};
+
+static const int mt8183_vts_index[MT8183_NUM_SENSORS] = {
+ VTS1, VTS2, VTS3, VTS4, VTS5, VTSABB
+};
+
/* MT8173 thermal sensor data */
static const int mt8173_bank_data[MT8173_NUM_ZONES][3] = {
{ MT8173_TS2, MT8173_TS3 },
@@ -434,6 +490,39 @@ struct mtk_thermal {
};

/**
+ * The MT8183 thermal controller has one bank for the current SW framework.
+ * The MT8183 has a total of 6 temperature sensors.
+ * There are two thermal controller to control the six sensor.
+ * The first one bind 2 sensor, and the other bind 4 sensors.
+ * The thermal core only gets the maximum temperature of all sensor, 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, and this indeed needs the temperatures of the individual banks
+ * for making better decisions.
+ */
+
+static const struct mtk_thermal_data mt8183_thermal_data = {
+ .auxadc_channel = MT8183_TEMP_AUXADC_CHANNEL,
+ .num_banks = MT8183_NUM_SENSORS_PER_ZONE,
+ .num_sensors = MT8183_NUM_SENSORS,
+ .vts_index = mt8183_vts_index,
+ .cali_val = MT8183_CALIBRATION,
+ .num_controller = MT8183_NUM_CONTROLLER,
+ .controller_offset = mt8183_tc_offset,
+ .need_switch_bank = false,
+ .bank_data = {
+ {
+ .num_sensors = 6,
+ .sensors = mt8183_bank_data,
+ },
+ },
+
+ .msr = mt8183_msr,
+ .adcpnp = mt8183_adcpnp,
+ .sensor_mux_values = mt8183_mux_values,
+};
+
+/**
* raw_to_mcelsius - convert a raw ADC value to mcelsius
* @mt: The thermal controller
* @raw: raw ADC value
@@ -726,6 +815,9 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
case VTS4:
mt->vts[VTS4] = CALIB_BUF2_VTS_TS4(buf[2]);
break;
+ case VTS5:
+ mt->vts[VTS5] = CALIB_BUF2_VTS_TS5(buf[2]);
+ break;
case VTSABB:
mt->vts[VTSABB] = CALIB_BUF2_VTS_TSABB(buf[2]);
break;
@@ -766,6 +858,10 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
{
.compatible = "mediatek,mt7622-thermal",
.data = (void *)&mt7622_thermal_data,
+ },
+ {
+ .compatible = "mediatek,mt8183-thermal",
+ .data = (void *)&mt8183_thermal_data,
}, {
},
};
--
1.9.1