openwrt/target/linux/mediatek/patches-5.15/805-thermal-drivers-mediatek-add-support-for-MT7986-and-.patch
Daniel Golle 5d921aa72f mediatek: filogic: add support for hw i2c, pwm and thermal
Add support for hardware I2C and PWM units found in the Filogic SoCs
as well as the CPU thermal support.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2022-10-07 16:45:10 +01:00

285 lines
8.4 KiB
Diff

From cd47d86ab09f1f3ec5c86441d4fe95e0cf597c06 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Tue, 13 Sep 2022 00:56:24 +0100
Subject: [PATCH] thermal/drivers/mediatek: add support for MT7986 and MT7981
Add support for V3 generation thermal found in MT7986 and MT7981 SoCs.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/thermal/mtk_thermal.c | 202 +++++++++++++++++++++++++++++++++-
1 file changed, 198 insertions(+), 4 deletions(-)
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -150,6 +150,21 @@
#define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
#define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
+/*
+ * Layout of the fuses providing the calibration data
+ * These macros could be used for MT7981 and MT7986.
+ */
+#define CALIB_BUF0_ADC_GE_V3(x) (((x) >> 0) & 0x3ff)
+#define CALIB_BUF0_ADC_OE_V3(x) (((x) >> 10) & 0x3ff)
+#define CALIB_BUF0_DEGC_CALI_V3(x) (((x) >> 20) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_V3(x) (((x) >> 26) & 0x3f)
+#define CALIB_BUF1_VTS_TS1_V3(x) (((x) >> 0) & 0x1ff)
+#define CALIB_BUF1_VTS_TS2_V3(x) (((x) >> 21) & 0x1ff)
+#define CALIB_BUF1_VTS_TSABB_V3(x) (((x) >> 9) & 0x1ff)
+#define CALIB_BUF1_VALID_V3(x) (((x) >> 18) & 0x1)
+#define CALIB_BUF1_O_SLOPE_SIGN_V3(x) (((x) >> 19) & 0x1)
+#define CALIB_BUF1_ID_V3(x) (((x) >> 20) & 0x1)
+
enum {
VTS1,
VTS2,
@@ -163,6 +178,7 @@ enum {
enum mtk_thermal_version {
MTK_THERMAL_V1 = 1,
MTK_THERMAL_V2,
+ MTK_THERMAL_V3,
};
/* MT2701 thermal sensors */
@@ -245,6 +261,27 @@ enum mtk_thermal_version {
/* The calibration coefficient of sensor */
#define MT8183_CALIBRATION 153
+/* AUXADC channel 11 is used for the temperature sensors */
+#define MT7986_TEMP_AUXADC_CHANNEL 11
+
+/* The total number of temperature sensors in the MT7986 */
+#define MT7986_NUM_SENSORS 1
+
+/* The number of banks in the MT7986 */
+#define MT7986_NUM_ZONES 1
+
+/* The number of sensing points per bank */
+#define MT7986_NUM_SENSORS_PER_ZONE 1
+
+/* MT7986 thermal sensors */
+#define MT7986_TS1 0
+
+/* The number of controller in the MT7986 */
+#define MT7986_NUM_CONTROLLER 1
+
+/* The calibration coefficient of sensor */
+#define MT7986_CALIBRATION 165
+
struct mtk_thermal;
struct thermal_bank_cfg {
@@ -279,6 +316,7 @@ struct mtk_thermal {
struct clk *clk_peri_therm;
struct clk *clk_auxadc;
+ struct clk *clk_adc_32k;
/* lock: for getting and putting banks */
struct mutex lock;
@@ -386,6 +424,14 @@ static const int mt7622_mux_values[MT762
static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
+/* MT7986 thermal sensor data */
+static const int mt7986_bank_data[MT7986_NUM_SENSORS] = { MT7986_TS1, };
+static const int mt7986_msr[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
+static const int mt7986_adcpnp[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
+static const int mt7986_mux_values[MT7986_NUM_SENSORS] = { 0, };
+static const int mt7986_vts_index[MT7986_NUM_SENSORS] = { VTS1 };
+static const int mt7986_tc_offset[MT7986_NUM_CONTROLLER] = { 0x0, };
+
/*
* The MT8173 thermal controller has four banks. Each bank can read up to
* four temperature sensors simultaneously. The MT8173 has a total of 5
@@ -549,6 +595,30 @@ static const struct mtk_thermal_data mt8
.version = MTK_THERMAL_V1,
};
+/*
+ * MT7986 uses AUXADC Channel 11 for raw data access.
+ */
+static const struct mtk_thermal_data mt7986_thermal_data = {
+ .auxadc_channel = MT7986_TEMP_AUXADC_CHANNEL,
+ .num_banks = MT7986_NUM_ZONES,
+ .num_sensors = MT7986_NUM_SENSORS,
+ .vts_index = mt7986_vts_index,
+ .cali_val = MT7986_CALIBRATION,
+ .num_controller = MT7986_NUM_CONTROLLER,
+ .controller_offset = mt7986_tc_offset,
+ .need_switch_bank = true,
+ .bank_data = {
+ {
+ .num_sensors = 1,
+ .sensors = mt7986_bank_data,
+ },
+ },
+ .msr = mt7986_msr,
+ .adcpnp = mt7986_adcpnp,
+ .sensor_mux_values = mt7986_mux_values,
+ .version = MTK_THERMAL_V3,
+};
+
/**
* raw_to_mcelsius - convert a raw ADC value to mcelsius
* @mt: The thermal controller
@@ -603,6 +673,22 @@ static int raw_to_mcelsius_v2(struct mtk
return (format_2 - tmp) * 100;
}
+static int raw_to_mcelsius_v3(struct mtk_thermal *mt, int sensno, s32 raw)
+{
+ s32 tmp;
+
+ if (raw == 0)
+ return 0;
+
+ raw &= 0xfff;
+ tmp = 100000 * 15 / 16 * 10000;
+ tmp /= 4096 - 512 + mt->adc_ge;
+ tmp /= 1490;
+ tmp *= raw - mt->vts[sensno] - 2900;
+
+ return mt->degc_cali * 500 - tmp;
+}
+
/**
* mtk_thermal_get_bank - get bank
* @bank: The bank
@@ -659,9 +745,12 @@ static int mtk_thermal_bank_temperature(
if (mt->conf->version == MTK_THERMAL_V1) {
temp = raw_to_mcelsius_v1(
mt, conf->bank_data[bank->id].sensors[i], raw);
- } else {
+ } else if (mt->conf->version == MTK_THERMAL_V2) {
temp = raw_to_mcelsius_v2(
mt, conf->bank_data[bank->id].sensors[i], raw);
+ } else {
+ temp = raw_to_mcelsius_v3(
+ mt, conf->bank_data[bank->id].sensors[i], raw);
}
/*
@@ -887,6 +976,26 @@ static int mtk_thermal_extract_efuse_v2(
return 0;
}
+static int mtk_thermal_extract_efuse_v3(struct mtk_thermal *mt, u32 *buf)
+{
+ if (!CALIB_BUF1_VALID_V3(buf[1]))
+ return -EINVAL;
+
+ mt->adc_oe = CALIB_BUF0_ADC_OE_V3(buf[0]);
+ mt->adc_ge = CALIB_BUF0_ADC_GE_V3(buf[0]);
+ mt->degc_cali = CALIB_BUF0_DEGC_CALI_V3(buf[0]);
+ mt->o_slope = CALIB_BUF0_O_SLOPE_V3(buf[0]);
+ mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V3(buf[1]);
+ mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V3(buf[1]);
+ mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V3(buf[1]);
+ mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V3(buf[1]);
+
+ if (CALIB_BUF1_ID_V3(buf[1]) == 0)
+ mt->o_slope = 0;
+
+ return 0;
+}
+
static int mtk_thermal_get_calibration_data(struct device *dev,
struct mtk_thermal *mt)
{
@@ -897,6 +1006,7 @@ static int mtk_thermal_get_calibration_d
/* Start with default values */
mt->adc_ge = 512;
+ mt->adc_oe = 512;
for (i = 0; i < mt->conf->num_sensors; i++)
mt->vts[i] = 260;
mt->degc_cali = 40;
@@ -924,8 +1034,10 @@ static int mtk_thermal_get_calibration_d
if (mt->conf->version == MTK_THERMAL_V1)
ret = mtk_thermal_extract_efuse_v1(mt, buf);
- else
+ else if (mt->conf->version == MTK_THERMAL_V2)
ret = mtk_thermal_extract_efuse_v2(mt, buf);
+ else
+ ret = mtk_thermal_extract_efuse_v3(mt, buf);
if (ret) {
dev_info(dev, "Device not calibrated, using default calibration values\n");
@@ -956,6 +1068,10 @@ static const struct of_device_id mtk_the
.data = (void *)&mt7622_thermal_data,
},
{
+ .compatible = "mediatek,mt7986-thermal",
+ .data = (void *)&mt7986_thermal_data,
+ },
+ {
.compatible = "mediatek,mt8183-thermal",
.data = (void *)&mt8183_thermal_data,
}, {
@@ -1009,6 +1125,12 @@ static int mtk_thermal_probe(struct plat
if (IS_ERR(mt->clk_auxadc))
return PTR_ERR(mt->clk_auxadc);
+ if (mt->conf->version == MTK_THERMAL_V3) {
+ mt->clk_adc_32k = devm_clk_get(&pdev->dev, "adc_32k");
+ if (IS_ERR(mt->clk_adc_32k))
+ return PTR_ERR(mt->clk_adc_32k);
+ }
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mt->thermal_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(mt->thermal_base))
@@ -1058,10 +1180,18 @@ static int mtk_thermal_probe(struct plat
if (ret)
return ret;
+ if (mt->conf->version == MTK_THERMAL_V3) {
+ ret = clk_prepare_enable(mt->clk_adc_32k);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't enable auxadc 32k clk: %d\n", ret);
+ return ret;
+ }
+ }
+
ret = clk_prepare_enable(mt->clk_auxadc);
if (ret) {
dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);
- return ret;
+ goto err_disable_clk_adc_32k;
}
ret = clk_prepare_enable(mt->clk_peri_therm);
@@ -1070,7 +1200,8 @@ static int mtk_thermal_probe(struct plat
goto err_disable_clk_auxadc;
}
- if (mt->conf->version == MTK_THERMAL_V2) {
+ if (mt->conf->version == MTK_THERMAL_V2 ||
+ mt->conf->version == MTK_THERMAL_V3) {
mtk_thermal_turn_on_buffer(apmixed_base);
mtk_thermal_release_periodic_ts(mt, auxadc_base);
}
@@ -1099,6 +1230,9 @@ err_disable_clk_peri_therm:
clk_disable_unprepare(mt->clk_peri_therm);
err_disable_clk_auxadc:
clk_disable_unprepare(mt->clk_auxadc);
+err_disable_clk_adc_32k:
+ if (mt->conf->version == MTK_THERMAL_V3)
+ clk_disable_unprepare(mt->clk_adc_32k);
return ret;
}
@@ -1110,6 +1244,9 @@ static int mtk_thermal_remove(struct pla
clk_disable_unprepare(mt->clk_peri_therm);
clk_disable_unprepare(mt->clk_auxadc);
+ if (mt->conf->version == MTK_THERMAL_V3)
+ clk_disable_unprepare(mt->clk_adc_32k);
+
return 0;
}