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Message-ID: <20210603081806.21154-2-ben.tseng@mediatek.com>
Date: Thu, 3 Jun 2021 16:18:04 +0800
From: Ben Tseng <ben.tseng@...iatek.com>
To: Fan Chen <fan.chen@...iatek.com>, Zhang Rui <rui.zhang@...el.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
<linux-pm@...r.kernel.org>, <srv_heupstream@...iatek.com>
CC: Eduardo Valentin <edubezval@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Matthias Brugger <matthias.bgg@...il.com>,
<hsinyi@...omium.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
Michael Kao <michael.kao@...iatek.com>,
Ben Tseng <ben.tseng@...iatek.com>
Subject: [PATCH v4 1/3] thermal: mediatek: Relocate driver to mediatek folder
From: Michael Kao <michael.kao@...iatek.com>
Add Mediatek proprietary folder to upstream more thermal zone and cooler
drivers. Relocate the original thermal controller driver to it and rename
as soc_temp.c to show its purpose more clearly.
Signed-off-by: Ben Tseng <ben.tseng@...iatek.com>
Signed-off-by: Michael Kao <michael.kao@...iatek.com>
---
drivers/thermal/Kconfig | 14 +-
drivers/thermal/Makefile | 2 +-
drivers/thermal/mediatek/Kconfig | 23 +
drivers/thermal/mediatek/Makefile | 1 +
drivers/thermal/mediatek/soc_temp.c | 1127 +++++++++++++++++++++++++++++++++++
drivers/thermal/mtk_thermal.c | 1127 -----------------------------------
6 files changed, 1156 insertions(+), 1138 deletions(-)
create mode 100644 drivers/thermal/mediatek/Kconfig
create mode 100644 drivers/thermal/mediatek/Makefile
create mode 100644 drivers/thermal/mediatek/soc_temp.c
delete mode 100644 drivers/thermal/mtk_thermal.c
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index d7f44de..7a4ba50 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -401,16 +401,10 @@ config DA9062_THERMAL
zone.
Compatible with the DA9062 and DA9061 PMICs.
-config MTK_THERMAL
- tristate "Temperature sensor driver for mediatek SoCs"
- depends on ARCH_MEDIATEK || COMPILE_TEST
- depends on HAS_IOMEM
- depends on NVMEM || NVMEM=n
- depends on RESET_CONTROLLER
- default y
- help
- Enable this option if you want to have support for thermal management
- controller present in Mediatek SoCs
+menu "Mediatek thermal drivers"
+depends on ARCH_MEDIATEK || COMPILE_TEST
+source "drivers/thermal/mediatek/Kconfig"
+endmenu
config AMLOGIC_THERMAL
tristate "Amlogic Thermal Support"
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index 82fc3e6..9729a2b 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -54,7 +54,7 @@ obj-y += st/
obj-$(CONFIG_QCOM_TSENS) += qcom/
obj-y += tegra/
obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o
-obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o
+obj-$(CONFIG_MTK_THERMAL) += mediatek/
obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o
obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o
obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o
diff --git a/drivers/thermal/mediatek/Kconfig b/drivers/thermal/mediatek/Kconfig
new file mode 100644
index 0000000..0351e73
--- /dev/null
+++ b/drivers/thermal/mediatek/Kconfig
@@ -0,0 +1,23 @@
+config MTK_THERMAL
+ tristate "Mediatek thermal drivers"
+ depends on THERMAL_OF
+ help
+ This is the option for Mediatek thermal software
+ solutions. Please enable corresponding options to
+ get temperature information from thermal sensors or
+ turn on throttle mechaisms for thermal mitigation.
+
+if MTK_THERMAL
+
+config MTK_SOC_THERMAL
+ tristate "Temperature sensor driver for mediatek SoCs"
+ depends on HAS_IOMEM
+ depends on NVMEM
+ depends on RESET_CONTROLLER
+ help
+ Enable this option if you want to get SoC temperature
+ information for Mediatek platforms. This driver
+ configures thermal controllers to collect temperature
+ via AUXADC interface.
+
+endif
diff --git a/drivers/thermal/mediatek/Makefile b/drivers/thermal/mediatek/Makefile
new file mode 100644
index 0000000..f75313d
--- /dev/null
+++ b/drivers/thermal/mediatek/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MTK_SOC_THERMAL) += soc_temp.o
diff --git a/drivers/thermal/mediatek/soc_temp.c b/drivers/thermal/mediatek/soc_temp.c
new file mode 100644
index 0000000..97e8678
--- /dev/null
+++ b/drivers/thermal/mediatek/soc_temp.c
@@ -0,0 +1,1127 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Hanyi Wu <hanyi.wu@...iatek.com>
+ * Sascha Hauer <s.hauer@...gutronix.de>
+ * Dawei Chien <dawei.chien@...iatek.com>
+ * Louis Yu <louis.yu@...iatek.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/thermal.h>
+#include <linux/reset.h>
+#include <linux/types.h>
+
+/* AUXADC Registers */
+#define AUXADC_CON1_SET_V 0x008
+#define AUXADC_CON1_CLR_V 0x00c
+#define AUXADC_CON2_V 0x010
+#define AUXADC_DATA(channel) (0x14 + (channel) * 4)
+
+#define APMIXED_SYS_TS_CON1 0x604
+
+/* Thermal Controller Registers */
+#define TEMP_MONCTL0 0x000
+#define TEMP_MONCTL1 0x004
+#define TEMP_MONCTL2 0x008
+#define TEMP_MONIDET0 0x014
+#define TEMP_MONIDET1 0x018
+#define TEMP_MSRCTL0 0x038
+#define TEMP_MSRCTL1 0x03c
+#define TEMP_AHBPOLL 0x040
+#define TEMP_AHBTO 0x044
+#define TEMP_ADCPNP0 0x048
+#define TEMP_ADCPNP1 0x04c
+#define TEMP_ADCPNP2 0x050
+#define TEMP_ADCPNP3 0x0b4
+
+#define TEMP_ADCMUX 0x054
+#define TEMP_ADCEN 0x060
+#define TEMP_PNPMUXADDR 0x064
+#define TEMP_ADCMUXADDR 0x068
+#define TEMP_ADCENADDR 0x074
+#define TEMP_ADCVALIDADDR 0x078
+#define TEMP_ADCVOLTADDR 0x07c
+#define TEMP_RDCTRL 0x080
+#define TEMP_ADCVALIDMASK 0x084
+#define TEMP_ADCVOLTAGESHIFT 0x088
+#define TEMP_ADCWRITECTRL 0x08c
+#define TEMP_MSR0 0x090
+#define TEMP_MSR1 0x094
+#define TEMP_MSR2 0x098
+#define TEMP_MSR3 0x0B8
+
+#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)
+
+#define TEMP_MONCTL2_FILTER_INTERVAL(x) (((x) & 0x3ff) << 16)
+#define TEMP_MONCTL2_SENSOR_INTERVAL(x) ((x) & 0x3ff)
+
+#define TEMP_AHBPOLL_ADC_POLL_INTERVAL(x) (x)
+
+#define TEMP_ADCWRITECTRL_ADC_PNP_WRITE BIT(0)
+#define TEMP_ADCWRITECTRL_ADC_MUX_WRITE BIT(1)
+
+#define TEMP_ADCVALIDMASK_VALID_HIGH BIT(5)
+#define TEMP_ADCVALIDMASK_VALID_POS(bit) (bit)
+
+/* MT8173 thermal sensors */
+#define MT8173_TS1 0
+#define MT8173_TS2 1
+#define MT8173_TS3 2
+#define MT8173_TS4 3
+#define MT8173_TSABB 4
+
+/* AUXADC channel 11 is used for the temperature sensors */
+#define MT8173_TEMP_AUXADC_CHANNEL 11
+
+/* The total number of temperature sensors in the MT8173 */
+#define MT8173_NUM_SENSORS 5
+
+/* The number of banks in the MT8173 */
+#define MT8173_NUM_ZONES 4
+
+/* The number of sensing points per bank */
+#define MT8173_NUM_SENSORS_PER_ZONE 4
+
+/* The number of controller in the MT8173 */
+#define MT8173_NUM_CONTROLLER 1
+
+/* The calibration coefficient of sensor */
+#define MT8173_CALIBRATION 165
+
+/*
+ * Layout of the fuses providing the calibration data
+ * 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.
+ */
+#define CALIB_BUF0_VALID_V1 BIT(0)
+#define CALIB_BUF1_ADC_GE_V1(x) (((x) >> 22) & 0x3ff)
+#define CALIB_BUF0_VTS_TS1_V1(x) (((x) >> 17) & 0x1ff)
+#define CALIB_BUF0_VTS_TS2_V1(x) (((x) >> 8) & 0x1ff)
+#define CALIB_BUF1_VTS_TS3_V1(x) (((x) >> 0) & 0x1ff)
+#define CALIB_BUF2_VTS_TS4_V1(x) (((x) >> 23) & 0x1ff)
+#define CALIB_BUF2_VTS_TS5_V1(x) (((x) >> 5) & 0x1ff)
+#define CALIB_BUF2_VTS_TSABB_V1(x) (((x) >> 14) & 0x1ff)
+#define CALIB_BUF0_DEGC_CALI_V1(x) (((x) >> 1) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_V1(x) (((x) >> 26) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_SIGN_V1(x) (((x) >> 7) & 0x1)
+#define CALIB_BUF1_ID_V1(x) (((x) >> 9) & 0x1)
+
+/*
+ * Layout of the fuses providing the calibration data
+ * These macros could be used for MT7622.
+ */
+#define CALIB_BUF0_ADC_OE_V2(x) (((x) >> 22) & 0x3ff)
+#define CALIB_BUF0_ADC_GE_V2(x) (((x) >> 12) & 0x3ff)
+#define CALIB_BUF0_DEGC_CALI_V2(x) (((x) >> 6) & 0x3f)
+#define CALIB_BUF0_O_SLOPE_V2(x) (((x) >> 0) & 0x3f)
+#define CALIB_BUF1_VTS_TS1_V2(x) (((x) >> 23) & 0x1ff)
+#define CALIB_BUF1_VTS_TS2_V2(x) (((x) >> 14) & 0x1ff)
+#define CALIB_BUF1_VTS_TSABB_V2(x) (((x) >> 5) & 0x1ff)
+#define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
+#define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
+
+enum {
+ VTS1,
+ VTS2,
+ VTS3,
+ VTS4,
+ VTS5,
+ VTSABB,
+ MAX_NUM_VTS,
+};
+
+enum mtk_thermal_version {
+ MTK_THERMAL_V1 = 1,
+ MTK_THERMAL_V2,
+};
+
+/* MT2701 thermal sensors */
+#define MT2701_TS1 0
+#define MT2701_TS2 1
+#define MT2701_TSABB 2
+
+/* AUXADC channel 11 is used for the temperature sensors */
+#define MT2701_TEMP_AUXADC_CHANNEL 11
+
+/* The total number of temperature sensors in the MT2701 */
+#define MT2701_NUM_SENSORS 3
+
+/* The number of sensing points per bank */
+#define MT2701_NUM_SENSORS_PER_ZONE 3
+
+/* The number of controller in the MT2701 */
+#define MT2701_NUM_CONTROLLER 1
+
+/* The calibration coefficient of sensor */
+#define MT2701_CALIBRATION 165
+
+/* 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
+
+/* The number of controller in the MT2712 */
+#define MT2712_NUM_CONTROLLER 1
+
+/* The calibration coefficient of sensor */
+#define MT2712_CALIBRATION 165
+
+#define MT7622_TEMP_AUXADC_CHANNEL 11
+#define MT7622_NUM_SENSORS 1
+#define MT7622_NUM_ZONES 1
+#define MT7622_NUM_SENSORS_PER_ZONE 1
+#define MT7622_TS1 0
+#define MT7622_NUM_CONTROLLER 1
+
+/* The maximum number of banks */
+#define MAX_NUM_ZONES 8
+
+/* 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 banks in the MT8183 */
+#define MT8183_NUM_ZONES 1
+
+/* 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 {
+ unsigned int num_sensors;
+ const int *sensors;
+};
+
+struct mtk_thermal_bank {
+ struct mtk_thermal *mt;
+ int id;
+};
+
+struct mtk_thermal_data {
+ s32 num_banks;
+ s32 num_sensors;
+ s32 auxadc_channel;
+ const int *vts_index;
+ const int *sensor_mux_values;
+ const int *msr;
+ const int *adcpnp;
+ const int cali_val;
+ const int num_controller;
+ const int *controller_offset;
+ bool need_switch_bank;
+ struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
+ enum mtk_thermal_version version;
+};
+
+struct mtk_thermal {
+ struct device *dev;
+ void __iomem *thermal_base;
+
+ struct clk *clk_peri_therm;
+ struct clk *clk_auxadc;
+ /* lock: for getting and putting banks */
+ struct mutex lock;
+
+ /* Calibration values */
+ s32 adc_ge;
+ s32 adc_oe;
+ s32 degc_cali;
+ s32 o_slope;
+ s32 o_slope_sign;
+ s32 vts[MAX_NUM_VTS];
+
+ const struct mtk_thermal_data *conf;
+ struct mtk_thermal_bank banks[MAX_NUM_ZONES];
+};
+
+/* 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 },
+ { MT8173_TS2, MT8173_TS4 },
+ { MT8173_TS1, MT8173_TS2, MT8173_TSABB },
+ { MT8173_TS2 },
+};
+
+static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
+ TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
+};
+
+static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {
+ TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
+};
+
+static const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
+static const int mt8173_tc_offset[MT8173_NUM_CONTROLLER] = { 0x0, };
+
+static const int mt8173_vts_index[MT8173_NUM_SENSORS] = {
+ VTS1, VTS2, VTS3, VTS4, VTSABB
+};
+
+/* MT2701 thermal sensor data */
+static const int mt2701_bank_data[MT2701_NUM_SENSORS] = {
+ MT2701_TS1, MT2701_TS2, MT2701_TSABB
+};
+
+static const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = {
+ TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
+};
+
+static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
+ TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
+};
+
+static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
+static const int mt2701_tc_offset[MT2701_NUM_CONTROLLER] = { 0x0, };
+
+static const int mt2701_vts_index[MT2701_NUM_SENSORS] = {
+ VTS1, VTS2, VTS3
+};
+
+/* 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 };
+static const int mt2712_tc_offset[MT2712_NUM_CONTROLLER] = { 0x0, };
+
+static const int mt2712_vts_index[MT2712_NUM_SENSORS] = {
+ VTS1, VTS2, VTS3, VTS4
+};
+
+/* MT7622 thermal sensor data */
+static const int mt7622_bank_data[MT7622_NUM_SENSORS] = { MT7622_TS1, };
+static const int mt7622_msr[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
+static const int mt7622_adcpnp[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
+static const int mt7622_mux_values[MT7622_NUM_SENSORS] = { 0, };
+static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
+static const int mt7622_tc_offset[MT7622_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
+ * temperature sensors. We use each bank to measure a certain area of the
+ * SoC. Since TS2 is located centrally in the SoC it is influenced by multiple
+ * areas, hence is used in different banks.
+ *
+ * The thermal core only gets the maximum temperature of all banks, 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 mt8173_thermal_data = {
+ .auxadc_channel = MT8173_TEMP_AUXADC_CHANNEL,
+ .num_banks = MT8173_NUM_ZONES,
+ .num_sensors = MT8173_NUM_SENSORS,
+ .vts_index = mt8173_vts_index,
+ .cali_val = MT8173_CALIBRATION,
+ .num_controller = MT8173_NUM_CONTROLLER,
+ .controller_offset = mt8173_tc_offset,
+ .need_switch_bank = true,
+ .bank_data = {
+ {
+ .num_sensors = 2,
+ .sensors = mt8173_bank_data[0],
+ }, {
+ .num_sensors = 2,
+ .sensors = mt8173_bank_data[1],
+ }, {
+ .num_sensors = 3,
+ .sensors = mt8173_bank_data[2],
+ }, {
+ .num_sensors = 1,
+ .sensors = mt8173_bank_data[3],
+ },
+ },
+ .msr = mt8173_msr,
+ .adcpnp = mt8173_adcpnp,
+ .sensor_mux_values = mt8173_mux_values,
+ .version = MTK_THERMAL_V1,
+};
+
+/*
+ * The MT2701 thermal controller has one bank, which can read up to
+ * three temperature sensors simultaneously. The MT2701 has a total of 3
+ * 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 mt2701_thermal_data = {
+ .auxadc_channel = MT2701_TEMP_AUXADC_CHANNEL,
+ .num_banks = 1,
+ .num_sensors = MT2701_NUM_SENSORS,
+ .vts_index = mt2701_vts_index,
+ .cali_val = MT2701_CALIBRATION,
+ .num_controller = MT2701_NUM_CONTROLLER,
+ .controller_offset = mt2701_tc_offset,
+ .need_switch_bank = true,
+ .bank_data = {
+ {
+ .num_sensors = 3,
+ .sensors = mt2701_bank_data,
+ },
+ },
+ .msr = mt2701_msr,
+ .adcpnp = mt2701_adcpnp,
+ .sensor_mux_values = mt2701_mux_values,
+ .version = MTK_THERMAL_V1,
+};
+
+/*
+ * 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,
+ .vts_index = mt2712_vts_index,
+ .cali_val = MT2712_CALIBRATION,
+ .num_controller = MT2712_NUM_CONTROLLER,
+ .controller_offset = mt2712_tc_offset,
+ .need_switch_bank = true,
+ .bank_data = {
+ {
+ .num_sensors = 4,
+ .sensors = mt2712_bank_data,
+ },
+ },
+ .msr = mt2712_msr,
+ .adcpnp = mt2712_adcpnp,
+ .sensor_mux_values = mt2712_mux_values,
+ .version = MTK_THERMAL_V1,
+};
+
+/*
+ * MT7622 have only one sensing point which uses AUXADC Channel 11 for raw data
+ * access.
+ */
+static const struct mtk_thermal_data mt7622_thermal_data = {
+ .auxadc_channel = MT7622_TEMP_AUXADC_CHANNEL,
+ .num_banks = MT7622_NUM_ZONES,
+ .num_sensors = MT7622_NUM_SENSORS,
+ .vts_index = mt7622_vts_index,
+ .cali_val = MT7622_CALIBRATION,
+ .num_controller = MT7622_NUM_CONTROLLER,
+ .controller_offset = mt7622_tc_offset,
+ .need_switch_bank = true,
+ .bank_data = {
+ {
+ .num_sensors = 1,
+ .sensors = mt7622_bank_data,
+ },
+ },
+ .msr = mt7622_msr,
+ .adcpnp = mt7622_adcpnp,
+ .sensor_mux_values = mt7622_mux_values,
+ .version = MTK_THERMAL_V2,
+};
+
+/*
+ * 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_ZONES,
+ .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,
+ .version = MTK_THERMAL_V1,
+};
+
+/**
+ * raw_to_mcelsius - convert a raw ADC value to mcelsius
+ * @mt: The thermal controller
+ * @sensno: sensor number
+ * @raw: raw ADC value
+ *
+ * This converts the raw ADC value to mcelsius using the SoC specific
+ * calibration constants
+ */
+static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
+{
+ s32 tmp;
+
+ raw &= 0xfff;
+
+ tmp = 203450520 << 3;
+ tmp /= mt->conf->cali_val + mt->o_slope;
+ tmp /= 10000 + mt->adc_ge;
+ tmp *= raw - mt->vts[sensno] - 3350;
+ tmp >>= 3;
+
+ return mt->degc_cali * 500 - tmp;
+}
+
+static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
+{
+ s32 format_1;
+ s32 format_2;
+ s32 g_oe;
+ s32 g_gain;
+ s32 g_x_roomt;
+ s32 tmp;
+
+ if (raw == 0)
+ return 0;
+
+ raw &= 0xfff;
+ g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
+ g_oe = mt->adc_oe - 512;
+ format_1 = mt->vts[VTS2] + 3105 - g_oe;
+ format_2 = (mt->degc_cali * 10) >> 1;
+ g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
+
+ tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
+ tmp = tmp * 10 * 100 / 11;
+
+ if (mt->o_slope_sign == 0)
+ tmp = tmp / (165 - mt->o_slope);
+ else
+ tmp = tmp / (165 + mt->o_slope);
+
+ return (format_2 - tmp) * 100;
+}
+
+/**
+ * mtk_thermal_get_bank - get bank
+ * @bank: The bank
+ *
+ * The bank registers are banked, we have to select a bank in the
+ * PTPCORESEL register to access it.
+ */
+static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)
+{
+ struct mtk_thermal *mt = bank->mt;
+ u32 val;
+
+ if (mt->conf->need_switch_bank) {
+ mutex_lock(&mt->lock);
+
+ val = readl(mt->thermal_base + PTPCORESEL);
+ val &= ~0xf;
+ val |= bank->id;
+ writel(val, mt->thermal_base + PTPCORESEL);
+ }
+}
+
+/**
+ * mtk_thermal_put_bank - release bank
+ * @bank: The bank
+ *
+ * release a bank previously taken with mtk_thermal_get_bank,
+ */
+static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
+{
+ struct mtk_thermal *mt = bank->mt;
+
+ if (mt->conf->need_switch_bank)
+ mutex_unlock(&mt->lock);
+}
+
+/**
+ * mtk_thermal_bank_temperature - get the temperature of a bank
+ * @bank: The bank
+ *
+ * The temperature of a bank is considered the maximum temperature of
+ * the sensors associated to the bank.
+ */
+static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
+{
+ struct mtk_thermal *mt = bank->mt;
+ const struct mtk_thermal_data *conf = mt->conf;
+ int i, temp = INT_MIN, max = INT_MIN;
+ u32 raw;
+
+ for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
+ raw = readl(mt->thermal_base + conf->msr[i]);
+
+ if (mt->conf->version == MTK_THERMAL_V1) {
+ temp = raw_to_mcelsius_v1(
+ mt, conf->bank_data[bank->id].sensors[i], raw);
+ } else {
+ temp = raw_to_mcelsius_v2(
+ mt, conf->bank_data[bank->id].sensors[i], raw);
+ }
+
+ /*
+ * The first read of a sensor often contains very high bogus
+ * temperature value. Filter these out so that the system does
+ * not immediately shut down.
+ */
+ if (temp > 200000)
+ temp = 0;
+
+ if (temp > max)
+ max = temp;
+ }
+
+ return max;
+}
+
+static int mtk_read_temp(void *data, int *temperature)
+{
+ struct mtk_thermal *mt = data;
+ int i;
+ int tempmax = INT_MIN;
+
+ for (i = 0; i < mt->conf->num_banks; i++) {
+ struct mtk_thermal_bank *bank = &mt->banks[i];
+
+ mtk_thermal_get_bank(bank);
+
+ tempmax = max(tempmax, mtk_thermal_bank_temperature(bank));
+
+ mtk_thermal_put_bank(bank);
+ }
+
+ *temperature = tempmax;
+
+ return 0;
+}
+
+static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
+ .get_temp = mtk_read_temp,
+};
+
+static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
+ u32 apmixed_phys_base, u32 auxadc_phys_base,
+ int ctrl_id)
+{
+ struct mtk_thermal_bank *bank = &mt->banks[num];
+ const struct mtk_thermal_data *conf = mt->conf;
+ int i;
+
+ int offset = mt->conf->controller_offset[ctrl_id];
+ void __iomem *controller_base = mt->thermal_base + offset;
+
+ bank->id = num;
+ bank->mt = mt;
+
+ mtk_thermal_get_bank(bank);
+
+ /* bus clock 66M counting unit is 12 * 15.15ns * 256 = 46.540us */
+ writel(TEMP_MONCTL1_PERIOD_UNIT(12), controller_base + TEMP_MONCTL1);
+
+ /*
+ * filt interval is 1 * 46.540us = 46.54us,
+ * sen interval is 429 * 46.540us = 19.96ms
+ */
+ writel(TEMP_MONCTL2_FILTER_INTERVAL(1) |
+ TEMP_MONCTL2_SENSOR_INTERVAL(429),
+ controller_base + TEMP_MONCTL2);
+
+ /* poll is set to 10u */
+ writel(TEMP_AHBPOLL_ADC_POLL_INTERVAL(768),
+ controller_base + TEMP_AHBPOLL);
+
+ /* temperature sampling control, 1 sample */
+ writel(0x0, controller_base + TEMP_MSRCTL0);
+
+ /* exceed this polling time, IRQ would be inserted */
+ writel(0xffffffff, controller_base + TEMP_AHBTO);
+
+ /* number of interrupts per event, 1 is enough */
+ writel(0x0, controller_base + TEMP_MONIDET0);
+ writel(0x0, controller_base + TEMP_MONIDET1);
+
+ /*
+ * The MT8173 thermal controller does not have its own ADC. Instead it
+ * uses AHB bus accesses to control the AUXADC. To do this the thermal
+ * controller has to be programmed with the physical addresses of the
+ * AUXADC registers and with the various bit positions in the AUXADC.
+ * Also the thermal controller controls a mux in the APMIXEDSYS register
+ * space.
+ */
+
+ /*
+ * this value will be stored to TEMP_PNPMUXADDR (TEMP_SPARE0)
+ * automatically by hw
+ */
+ writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCMUX);
+
+ /* AHB address for auxadc mux selection */
+ writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
+ controller_base + TEMP_ADCMUXADDR);
+
+ if (mt->conf->version == MTK_THERMAL_V1) {
+ /* AHB address for pnp sensor mux selection */
+ writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
+ controller_base + TEMP_PNPMUXADDR);
+ }
+
+ /* AHB value for auxadc enable */
+ writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
+
+ /* AHB address for auxadc enable (channel 0 immediate mode selected) */
+ writel(auxadc_phys_base + AUXADC_CON1_SET_V,
+ controller_base + TEMP_ADCENADDR);
+
+ /* AHB address for auxadc valid bit */
+ writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
+ controller_base + TEMP_ADCVALIDADDR);
+
+ /* AHB address for auxadc voltage output */
+ writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
+ controller_base + TEMP_ADCVOLTADDR);
+
+ /* read valid & voltage are at the same register */
+ writel(0x0, controller_base + TEMP_RDCTRL);
+
+ /* indicate where the valid bit is */
+ writel(TEMP_ADCVALIDMASK_VALID_HIGH | TEMP_ADCVALIDMASK_VALID_POS(12),
+ controller_base + TEMP_ADCVALIDMASK);
+
+ /* no shift */
+ writel(0x0, controller_base + TEMP_ADCVOLTAGESHIFT);
+
+ /* enable auxadc mux write transaction */
+ writel(TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
+ controller_base + TEMP_ADCWRITECTRL);
+
+ for (i = 0; i < conf->bank_data[num].num_sensors; i++)
+ writel(conf->sensor_mux_values[conf->bank_data[num].sensors[i]],
+ mt->thermal_base + conf->adcpnp[i]);
+
+ writel((1 << conf->bank_data[num].num_sensors) - 1,
+ controller_base + TEMP_MONCTL0);
+
+ writel(TEMP_ADCWRITECTRL_ADC_PNP_WRITE |
+ TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
+ controller_base + TEMP_ADCWRITECTRL);
+
+ mtk_thermal_put_bank(bank);
+}
+
+static u64 of_get_phys_base(struct device_node *np)
+{
+ u64 size64;
+ const __be32 *regaddr_p;
+
+ regaddr_p = of_get_address(np, 0, &size64, NULL);
+ if (!regaddr_p)
+ return OF_BAD_ADDR;
+
+ return of_translate_address(np, regaddr_p);
+}
+
+static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
+{
+ int i;
+
+ if (!(buf[0] & CALIB_BUF0_VALID_V1))
+ return -EINVAL;
+
+ mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
+
+ for (i = 0; i < mt->conf->num_sensors; i++) {
+ switch (mt->conf->vts_index[i]) {
+ case VTS1:
+ mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
+ break;
+ case VTS2:
+ mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
+ break;
+ case VTS3:
+ mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
+ break;
+ case VTS4:
+ mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
+ break;
+ case VTS5:
+ mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
+ break;
+ case VTSABB:
+ mt->vts[VTSABB] =
+ CALIB_BUF2_VTS_TSABB_V1(buf[2]);
+ break;
+ default:
+ break;
+ }
+ }
+
+ mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
+ if (CALIB_BUF1_ID_V1(buf[1]) &
+ CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
+ mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
+ else
+ mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
+
+ return 0;
+}
+
+static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
+{
+ if (!CALIB_BUF1_VALID_V2(buf[1]))
+ return -EINVAL;
+
+ mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
+ mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
+ mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
+ mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
+ mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
+ mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
+ mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
+ mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
+
+ return 0;
+}
+
+static int mtk_thermal_get_calibration_data(struct device *dev,
+ struct mtk_thermal *mt)
+{
+ struct nvmem_cell *cell;
+ u32 *buf;
+ size_t len;
+ int i, ret = 0;
+
+ /* Start with default values */
+ mt->adc_ge = 512;
+ for (i = 0; i < mt->conf->num_sensors; i++)
+ mt->vts[i] = 260;
+ mt->degc_cali = 40;
+ mt->o_slope = 0;
+
+ cell = nvmem_cell_get(dev, "calibration-data");
+ if (IS_ERR(cell)) {
+ if (PTR_ERR(cell) == -EPROBE_DEFER)
+ return PTR_ERR(cell);
+ return 0;
+ }
+
+ buf = (u32 *)nvmem_cell_read(cell, &len);
+
+ nvmem_cell_put(cell);
+
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
+
+ if (len < 3 * sizeof(u32)) {
+ dev_warn(dev, "invalid calibration data\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (mt->conf->version == MTK_THERMAL_V1)
+ ret = mtk_thermal_extract_efuse_v1(mt, buf);
+ else
+ ret = mtk_thermal_extract_efuse_v2(mt, buf);
+
+ if (ret) {
+ dev_info(dev, "Device not calibrated, using default calibration values\n");
+ ret = 0;
+ }
+
+out:
+ kfree(buf);
+
+ return ret;
+}
+
+static const struct of_device_id mtk_thermal_of_match[] = {
+ {
+ .compatible = "mediatek,mt8173-thermal",
+ .data = (void *)&mt8173_thermal_data,
+ },
+ {
+ .compatible = "mediatek,mt2701-thermal",
+ .data = (void *)&mt2701_thermal_data,
+ },
+ {
+ .compatible = "mediatek,mt2712-thermal",
+ .data = (void *)&mt2712_thermal_data,
+ },
+ {
+ .compatible = "mediatek,mt7622-thermal",
+ .data = (void *)&mt7622_thermal_data,
+ },
+ {
+ .compatible = "mediatek,mt8183-thermal",
+ .data = (void *)&mt8183_thermal_data,
+ }, {
+ },
+};
+MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
+
+static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
+{
+ int tmp;
+
+ tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
+ tmp &= ~(0x37);
+ tmp |= 0x1;
+ writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
+ udelay(200);
+}
+
+static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
+ void __iomem *auxadc_base)
+{
+ int tmp;
+
+ writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
+ writel(0x1, mt->thermal_base + TEMP_MONCTL0);
+ tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
+ writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
+}
+
+static int mtk_thermal_probe(struct platform_device *pdev)
+{
+ int ret, i, ctrl_id;
+ struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node;
+ struct mtk_thermal *mt;
+ struct resource *res;
+ u64 auxadc_phys_base, apmixed_phys_base;
+ struct thermal_zone_device *tzdev;
+ void __iomem *apmixed_base, *auxadc_base;
+
+ mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
+ if (!mt)
+ return -ENOMEM;
+
+ mt->conf = of_device_get_match_data(&pdev->dev);
+
+ mt->clk_peri_therm = devm_clk_get(&pdev->dev, "therm");
+ if (IS_ERR(mt->clk_peri_therm))
+ return PTR_ERR(mt->clk_peri_therm);
+
+ mt->clk_auxadc = devm_clk_get(&pdev->dev, "auxadc");
+ if (IS_ERR(mt->clk_auxadc))
+ return PTR_ERR(mt->clk_auxadc);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mt->thermal_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mt->thermal_base))
+ return PTR_ERR(mt->thermal_base);
+
+ ret = mtk_thermal_get_calibration_data(&pdev->dev, mt);
+ if (ret)
+ return ret;
+
+ mutex_init(&mt->lock);
+
+ mt->dev = &pdev->dev;
+
+ auxadc = of_parse_phandle(np, "mediatek,auxadc", 0);
+ if (!auxadc) {
+ dev_err(&pdev->dev, "missing auxadc node\n");
+ return -ENODEV;
+ }
+
+ auxadc_base = of_iomap(auxadc, 0);
+ auxadc_phys_base = of_get_phys_base(auxadc);
+
+ of_node_put(auxadc);
+
+ if (auxadc_phys_base == OF_BAD_ADDR) {
+ dev_err(&pdev->dev, "Can't get auxadc phys address\n");
+ return -EINVAL;
+ }
+
+ apmixedsys = of_parse_phandle(np, "mediatek,apmixedsys", 0);
+ if (!apmixedsys) {
+ dev_err(&pdev->dev, "missing apmixedsys node\n");
+ return -ENODEV;
+ }
+
+ apmixed_base = of_iomap(apmixedsys, 0);
+ apmixed_phys_base = of_get_phys_base(apmixedsys);
+
+ of_node_put(apmixedsys);
+
+ if (apmixed_phys_base == OF_BAD_ADDR) {
+ dev_err(&pdev->dev, "Can't get auxadc phys address\n");
+ return -EINVAL;
+ }
+
+ ret = device_reset_optional(&pdev->dev);
+ if (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;
+ }
+
+ ret = clk_prepare_enable(mt->clk_peri_therm);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);
+ goto err_disable_clk_auxadc;
+ }
+
+ if (mt->conf->version == MTK_THERMAL_V2) {
+ mtk_thermal_turn_on_buffer(apmixed_base);
+ mtk_thermal_release_periodic_ts(mt, auxadc_base);
+ }
+
+ for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
+ for (i = 0; i < mt->conf->num_banks; i++)
+ mtk_thermal_init_bank(mt, i, apmixed_phys_base,
+ auxadc_phys_base, ctrl_id);
+
+ platform_set_drvdata(pdev, mt);
+
+ tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, mt,
+ &mtk_thermal_ops);
+ if (IS_ERR(tzdev)) {
+ ret = PTR_ERR(tzdev);
+ goto err_disable_clk_peri_therm;
+ }
+
+ return 0;
+
+err_disable_clk_peri_therm:
+ clk_disable_unprepare(mt->clk_peri_therm);
+err_disable_clk_auxadc:
+ clk_disable_unprepare(mt->clk_auxadc);
+
+ return ret;
+}
+
+static int mtk_thermal_remove(struct platform_device *pdev)
+{
+ struct mtk_thermal *mt = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(mt->clk_peri_therm);
+ clk_disable_unprepare(mt->clk_auxadc);
+
+ return 0;
+}
+
+static struct platform_driver mtk_thermal_driver = {
+ .probe = mtk_thermal_probe,
+ .remove = mtk_thermal_remove,
+ .driver = {
+ .name = "mtk-thermal",
+ .of_match_table = mtk_thermal_of_match,
+ },
+};
+
+module_platform_driver(mtk_thermal_driver);
+
+MODULE_AUTHOR("Michael Kao <michael.kao@...iatek.com>");
+MODULE_AUTHOR("Louis Yu <louis.yu@...iatek.com>");
+MODULE_AUTHOR("Dawei Chien <dawei.chien@...iatek.com>");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@...gutronix.de>");
+MODULE_AUTHOR("Hanyi Wu <hanyi.wu@...iatek.com>");
+MODULE_DESCRIPTION("Mediatek thermal driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
deleted file mode 100644
index 97e8678..0000000
--- a/drivers/thermal/mtk_thermal.c
+++ /dev/null
@@ -1,1127 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2015 MediaTek Inc.
- * Author: Hanyi Wu <hanyi.wu@...iatek.com>
- * Sascha Hauer <s.hauer@...gutronix.de>
- * Dawei Chien <dawei.chien@...iatek.com>
- * Louis Yu <louis.yu@...iatek.com>
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/nvmem-consumer.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/thermal.h>
-#include <linux/reset.h>
-#include <linux/types.h>
-
-/* AUXADC Registers */
-#define AUXADC_CON1_SET_V 0x008
-#define AUXADC_CON1_CLR_V 0x00c
-#define AUXADC_CON2_V 0x010
-#define AUXADC_DATA(channel) (0x14 + (channel) * 4)
-
-#define APMIXED_SYS_TS_CON1 0x604
-
-/* Thermal Controller Registers */
-#define TEMP_MONCTL0 0x000
-#define TEMP_MONCTL1 0x004
-#define TEMP_MONCTL2 0x008
-#define TEMP_MONIDET0 0x014
-#define TEMP_MONIDET1 0x018
-#define TEMP_MSRCTL0 0x038
-#define TEMP_MSRCTL1 0x03c
-#define TEMP_AHBPOLL 0x040
-#define TEMP_AHBTO 0x044
-#define TEMP_ADCPNP0 0x048
-#define TEMP_ADCPNP1 0x04c
-#define TEMP_ADCPNP2 0x050
-#define TEMP_ADCPNP3 0x0b4
-
-#define TEMP_ADCMUX 0x054
-#define TEMP_ADCEN 0x060
-#define TEMP_PNPMUXADDR 0x064
-#define TEMP_ADCMUXADDR 0x068
-#define TEMP_ADCENADDR 0x074
-#define TEMP_ADCVALIDADDR 0x078
-#define TEMP_ADCVOLTADDR 0x07c
-#define TEMP_RDCTRL 0x080
-#define TEMP_ADCVALIDMASK 0x084
-#define TEMP_ADCVOLTAGESHIFT 0x088
-#define TEMP_ADCWRITECTRL 0x08c
-#define TEMP_MSR0 0x090
-#define TEMP_MSR1 0x094
-#define TEMP_MSR2 0x098
-#define TEMP_MSR3 0x0B8
-
-#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)
-
-#define TEMP_MONCTL2_FILTER_INTERVAL(x) (((x) & 0x3ff) << 16)
-#define TEMP_MONCTL2_SENSOR_INTERVAL(x) ((x) & 0x3ff)
-
-#define TEMP_AHBPOLL_ADC_POLL_INTERVAL(x) (x)
-
-#define TEMP_ADCWRITECTRL_ADC_PNP_WRITE BIT(0)
-#define TEMP_ADCWRITECTRL_ADC_MUX_WRITE BIT(1)
-
-#define TEMP_ADCVALIDMASK_VALID_HIGH BIT(5)
-#define TEMP_ADCVALIDMASK_VALID_POS(bit) (bit)
-
-/* MT8173 thermal sensors */
-#define MT8173_TS1 0
-#define MT8173_TS2 1
-#define MT8173_TS3 2
-#define MT8173_TS4 3
-#define MT8173_TSABB 4
-
-/* AUXADC channel 11 is used for the temperature sensors */
-#define MT8173_TEMP_AUXADC_CHANNEL 11
-
-/* The total number of temperature sensors in the MT8173 */
-#define MT8173_NUM_SENSORS 5
-
-/* The number of banks in the MT8173 */
-#define MT8173_NUM_ZONES 4
-
-/* The number of sensing points per bank */
-#define MT8173_NUM_SENSORS_PER_ZONE 4
-
-/* The number of controller in the MT8173 */
-#define MT8173_NUM_CONTROLLER 1
-
-/* The calibration coefficient of sensor */
-#define MT8173_CALIBRATION 165
-
-/*
- * Layout of the fuses providing the calibration data
- * 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.
- */
-#define CALIB_BUF0_VALID_V1 BIT(0)
-#define CALIB_BUF1_ADC_GE_V1(x) (((x) >> 22) & 0x3ff)
-#define CALIB_BUF0_VTS_TS1_V1(x) (((x) >> 17) & 0x1ff)
-#define CALIB_BUF0_VTS_TS2_V1(x) (((x) >> 8) & 0x1ff)
-#define CALIB_BUF1_VTS_TS3_V1(x) (((x) >> 0) & 0x1ff)
-#define CALIB_BUF2_VTS_TS4_V1(x) (((x) >> 23) & 0x1ff)
-#define CALIB_BUF2_VTS_TS5_V1(x) (((x) >> 5) & 0x1ff)
-#define CALIB_BUF2_VTS_TSABB_V1(x) (((x) >> 14) & 0x1ff)
-#define CALIB_BUF0_DEGC_CALI_V1(x) (((x) >> 1) & 0x3f)
-#define CALIB_BUF0_O_SLOPE_V1(x) (((x) >> 26) & 0x3f)
-#define CALIB_BUF0_O_SLOPE_SIGN_V1(x) (((x) >> 7) & 0x1)
-#define CALIB_BUF1_ID_V1(x) (((x) >> 9) & 0x1)
-
-/*
- * Layout of the fuses providing the calibration data
- * These macros could be used for MT7622.
- */
-#define CALIB_BUF0_ADC_OE_V2(x) (((x) >> 22) & 0x3ff)
-#define CALIB_BUF0_ADC_GE_V2(x) (((x) >> 12) & 0x3ff)
-#define CALIB_BUF0_DEGC_CALI_V2(x) (((x) >> 6) & 0x3f)
-#define CALIB_BUF0_O_SLOPE_V2(x) (((x) >> 0) & 0x3f)
-#define CALIB_BUF1_VTS_TS1_V2(x) (((x) >> 23) & 0x1ff)
-#define CALIB_BUF1_VTS_TS2_V2(x) (((x) >> 14) & 0x1ff)
-#define CALIB_BUF1_VTS_TSABB_V2(x) (((x) >> 5) & 0x1ff)
-#define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
-#define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
-
-enum {
- VTS1,
- VTS2,
- VTS3,
- VTS4,
- VTS5,
- VTSABB,
- MAX_NUM_VTS,
-};
-
-enum mtk_thermal_version {
- MTK_THERMAL_V1 = 1,
- MTK_THERMAL_V2,
-};
-
-/* MT2701 thermal sensors */
-#define MT2701_TS1 0
-#define MT2701_TS2 1
-#define MT2701_TSABB 2
-
-/* AUXADC channel 11 is used for the temperature sensors */
-#define MT2701_TEMP_AUXADC_CHANNEL 11
-
-/* The total number of temperature sensors in the MT2701 */
-#define MT2701_NUM_SENSORS 3
-
-/* The number of sensing points per bank */
-#define MT2701_NUM_SENSORS_PER_ZONE 3
-
-/* The number of controller in the MT2701 */
-#define MT2701_NUM_CONTROLLER 1
-
-/* The calibration coefficient of sensor */
-#define MT2701_CALIBRATION 165
-
-/* 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
-
-/* The number of controller in the MT2712 */
-#define MT2712_NUM_CONTROLLER 1
-
-/* The calibration coefficient of sensor */
-#define MT2712_CALIBRATION 165
-
-#define MT7622_TEMP_AUXADC_CHANNEL 11
-#define MT7622_NUM_SENSORS 1
-#define MT7622_NUM_ZONES 1
-#define MT7622_NUM_SENSORS_PER_ZONE 1
-#define MT7622_TS1 0
-#define MT7622_NUM_CONTROLLER 1
-
-/* The maximum number of banks */
-#define MAX_NUM_ZONES 8
-
-/* 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 banks in the MT8183 */
-#define MT8183_NUM_ZONES 1
-
-/* 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 {
- unsigned int num_sensors;
- const int *sensors;
-};
-
-struct mtk_thermal_bank {
- struct mtk_thermal *mt;
- int id;
-};
-
-struct mtk_thermal_data {
- s32 num_banks;
- s32 num_sensors;
- s32 auxadc_channel;
- const int *vts_index;
- const int *sensor_mux_values;
- const int *msr;
- const int *adcpnp;
- const int cali_val;
- const int num_controller;
- const int *controller_offset;
- bool need_switch_bank;
- struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
- enum mtk_thermal_version version;
-};
-
-struct mtk_thermal {
- struct device *dev;
- void __iomem *thermal_base;
-
- struct clk *clk_peri_therm;
- struct clk *clk_auxadc;
- /* lock: for getting and putting banks */
- struct mutex lock;
-
- /* Calibration values */
- s32 adc_ge;
- s32 adc_oe;
- s32 degc_cali;
- s32 o_slope;
- s32 o_slope_sign;
- s32 vts[MAX_NUM_VTS];
-
- const struct mtk_thermal_data *conf;
- struct mtk_thermal_bank banks[MAX_NUM_ZONES];
-};
-
-/* 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 },
- { MT8173_TS2, MT8173_TS4 },
- { MT8173_TS1, MT8173_TS2, MT8173_TSABB },
- { MT8173_TS2 },
-};
-
-static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
- TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
-};
-
-static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {
- TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
-};
-
-static const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
-static const int mt8173_tc_offset[MT8173_NUM_CONTROLLER] = { 0x0, };
-
-static const int mt8173_vts_index[MT8173_NUM_SENSORS] = {
- VTS1, VTS2, VTS3, VTS4, VTSABB
-};
-
-/* MT2701 thermal sensor data */
-static const int mt2701_bank_data[MT2701_NUM_SENSORS] = {
- MT2701_TS1, MT2701_TS2, MT2701_TSABB
-};
-
-static const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = {
- TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
-};
-
-static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
- TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
-};
-
-static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
-static const int mt2701_tc_offset[MT2701_NUM_CONTROLLER] = { 0x0, };
-
-static const int mt2701_vts_index[MT2701_NUM_SENSORS] = {
- VTS1, VTS2, VTS3
-};
-
-/* 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 };
-static const int mt2712_tc_offset[MT2712_NUM_CONTROLLER] = { 0x0, };
-
-static const int mt2712_vts_index[MT2712_NUM_SENSORS] = {
- VTS1, VTS2, VTS3, VTS4
-};
-
-/* MT7622 thermal sensor data */
-static const int mt7622_bank_data[MT7622_NUM_SENSORS] = { MT7622_TS1, };
-static const int mt7622_msr[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
-static const int mt7622_adcpnp[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
-static const int mt7622_mux_values[MT7622_NUM_SENSORS] = { 0, };
-static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
-static const int mt7622_tc_offset[MT7622_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
- * temperature sensors. We use each bank to measure a certain area of the
- * SoC. Since TS2 is located centrally in the SoC it is influenced by multiple
- * areas, hence is used in different banks.
- *
- * The thermal core only gets the maximum temperature of all banks, 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 mt8173_thermal_data = {
- .auxadc_channel = MT8173_TEMP_AUXADC_CHANNEL,
- .num_banks = MT8173_NUM_ZONES,
- .num_sensors = MT8173_NUM_SENSORS,
- .vts_index = mt8173_vts_index,
- .cali_val = MT8173_CALIBRATION,
- .num_controller = MT8173_NUM_CONTROLLER,
- .controller_offset = mt8173_tc_offset,
- .need_switch_bank = true,
- .bank_data = {
- {
- .num_sensors = 2,
- .sensors = mt8173_bank_data[0],
- }, {
- .num_sensors = 2,
- .sensors = mt8173_bank_data[1],
- }, {
- .num_sensors = 3,
- .sensors = mt8173_bank_data[2],
- }, {
- .num_sensors = 1,
- .sensors = mt8173_bank_data[3],
- },
- },
- .msr = mt8173_msr,
- .adcpnp = mt8173_adcpnp,
- .sensor_mux_values = mt8173_mux_values,
- .version = MTK_THERMAL_V1,
-};
-
-/*
- * The MT2701 thermal controller has one bank, which can read up to
- * three temperature sensors simultaneously. The MT2701 has a total of 3
- * 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 mt2701_thermal_data = {
- .auxadc_channel = MT2701_TEMP_AUXADC_CHANNEL,
- .num_banks = 1,
- .num_sensors = MT2701_NUM_SENSORS,
- .vts_index = mt2701_vts_index,
- .cali_val = MT2701_CALIBRATION,
- .num_controller = MT2701_NUM_CONTROLLER,
- .controller_offset = mt2701_tc_offset,
- .need_switch_bank = true,
- .bank_data = {
- {
- .num_sensors = 3,
- .sensors = mt2701_bank_data,
- },
- },
- .msr = mt2701_msr,
- .adcpnp = mt2701_adcpnp,
- .sensor_mux_values = mt2701_mux_values,
- .version = MTK_THERMAL_V1,
-};
-
-/*
- * 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,
- .vts_index = mt2712_vts_index,
- .cali_val = MT2712_CALIBRATION,
- .num_controller = MT2712_NUM_CONTROLLER,
- .controller_offset = mt2712_tc_offset,
- .need_switch_bank = true,
- .bank_data = {
- {
- .num_sensors = 4,
- .sensors = mt2712_bank_data,
- },
- },
- .msr = mt2712_msr,
- .adcpnp = mt2712_adcpnp,
- .sensor_mux_values = mt2712_mux_values,
- .version = MTK_THERMAL_V1,
-};
-
-/*
- * MT7622 have only one sensing point which uses AUXADC Channel 11 for raw data
- * access.
- */
-static const struct mtk_thermal_data mt7622_thermal_data = {
- .auxadc_channel = MT7622_TEMP_AUXADC_CHANNEL,
- .num_banks = MT7622_NUM_ZONES,
- .num_sensors = MT7622_NUM_SENSORS,
- .vts_index = mt7622_vts_index,
- .cali_val = MT7622_CALIBRATION,
- .num_controller = MT7622_NUM_CONTROLLER,
- .controller_offset = mt7622_tc_offset,
- .need_switch_bank = true,
- .bank_data = {
- {
- .num_sensors = 1,
- .sensors = mt7622_bank_data,
- },
- },
- .msr = mt7622_msr,
- .adcpnp = mt7622_adcpnp,
- .sensor_mux_values = mt7622_mux_values,
- .version = MTK_THERMAL_V2,
-};
-
-/*
- * 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_ZONES,
- .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,
- .version = MTK_THERMAL_V1,
-};
-
-/**
- * raw_to_mcelsius - convert a raw ADC value to mcelsius
- * @mt: The thermal controller
- * @sensno: sensor number
- * @raw: raw ADC value
- *
- * This converts the raw ADC value to mcelsius using the SoC specific
- * calibration constants
- */
-static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
-{
- s32 tmp;
-
- raw &= 0xfff;
-
- tmp = 203450520 << 3;
- tmp /= mt->conf->cali_val + mt->o_slope;
- tmp /= 10000 + mt->adc_ge;
- tmp *= raw - mt->vts[sensno] - 3350;
- tmp >>= 3;
-
- return mt->degc_cali * 500 - tmp;
-}
-
-static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
-{
- s32 format_1;
- s32 format_2;
- s32 g_oe;
- s32 g_gain;
- s32 g_x_roomt;
- s32 tmp;
-
- if (raw == 0)
- return 0;
-
- raw &= 0xfff;
- g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
- g_oe = mt->adc_oe - 512;
- format_1 = mt->vts[VTS2] + 3105 - g_oe;
- format_2 = (mt->degc_cali * 10) >> 1;
- g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
-
- tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
- tmp = tmp * 10 * 100 / 11;
-
- if (mt->o_slope_sign == 0)
- tmp = tmp / (165 - mt->o_slope);
- else
- tmp = tmp / (165 + mt->o_slope);
-
- return (format_2 - tmp) * 100;
-}
-
-/**
- * mtk_thermal_get_bank - get bank
- * @bank: The bank
- *
- * The bank registers are banked, we have to select a bank in the
- * PTPCORESEL register to access it.
- */
-static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)
-{
- struct mtk_thermal *mt = bank->mt;
- u32 val;
-
- if (mt->conf->need_switch_bank) {
- mutex_lock(&mt->lock);
-
- val = readl(mt->thermal_base + PTPCORESEL);
- val &= ~0xf;
- val |= bank->id;
- writel(val, mt->thermal_base + PTPCORESEL);
- }
-}
-
-/**
- * mtk_thermal_put_bank - release bank
- * @bank: The bank
- *
- * release a bank previously taken with mtk_thermal_get_bank,
- */
-static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
-{
- struct mtk_thermal *mt = bank->mt;
-
- if (mt->conf->need_switch_bank)
- mutex_unlock(&mt->lock);
-}
-
-/**
- * mtk_thermal_bank_temperature - get the temperature of a bank
- * @bank: The bank
- *
- * The temperature of a bank is considered the maximum temperature of
- * the sensors associated to the bank.
- */
-static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
-{
- struct mtk_thermal *mt = bank->mt;
- const struct mtk_thermal_data *conf = mt->conf;
- int i, temp = INT_MIN, max = INT_MIN;
- u32 raw;
-
- for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
- raw = readl(mt->thermal_base + conf->msr[i]);
-
- if (mt->conf->version == MTK_THERMAL_V1) {
- temp = raw_to_mcelsius_v1(
- mt, conf->bank_data[bank->id].sensors[i], raw);
- } else {
- temp = raw_to_mcelsius_v2(
- mt, conf->bank_data[bank->id].sensors[i], raw);
- }
-
- /*
- * The first read of a sensor often contains very high bogus
- * temperature value. Filter these out so that the system does
- * not immediately shut down.
- */
- if (temp > 200000)
- temp = 0;
-
- if (temp > max)
- max = temp;
- }
-
- return max;
-}
-
-static int mtk_read_temp(void *data, int *temperature)
-{
- struct mtk_thermal *mt = data;
- int i;
- int tempmax = INT_MIN;
-
- for (i = 0; i < mt->conf->num_banks; i++) {
- struct mtk_thermal_bank *bank = &mt->banks[i];
-
- mtk_thermal_get_bank(bank);
-
- tempmax = max(tempmax, mtk_thermal_bank_temperature(bank));
-
- mtk_thermal_put_bank(bank);
- }
-
- *temperature = tempmax;
-
- return 0;
-}
-
-static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
- .get_temp = mtk_read_temp,
-};
-
-static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
- u32 apmixed_phys_base, u32 auxadc_phys_base,
- int ctrl_id)
-{
- struct mtk_thermal_bank *bank = &mt->banks[num];
- const struct mtk_thermal_data *conf = mt->conf;
- int i;
-
- int offset = mt->conf->controller_offset[ctrl_id];
- void __iomem *controller_base = mt->thermal_base + offset;
-
- bank->id = num;
- bank->mt = mt;
-
- mtk_thermal_get_bank(bank);
-
- /* bus clock 66M counting unit is 12 * 15.15ns * 256 = 46.540us */
- writel(TEMP_MONCTL1_PERIOD_UNIT(12), controller_base + TEMP_MONCTL1);
-
- /*
- * filt interval is 1 * 46.540us = 46.54us,
- * sen interval is 429 * 46.540us = 19.96ms
- */
- writel(TEMP_MONCTL2_FILTER_INTERVAL(1) |
- TEMP_MONCTL2_SENSOR_INTERVAL(429),
- controller_base + TEMP_MONCTL2);
-
- /* poll is set to 10u */
- writel(TEMP_AHBPOLL_ADC_POLL_INTERVAL(768),
- controller_base + TEMP_AHBPOLL);
-
- /* temperature sampling control, 1 sample */
- writel(0x0, controller_base + TEMP_MSRCTL0);
-
- /* exceed this polling time, IRQ would be inserted */
- writel(0xffffffff, controller_base + TEMP_AHBTO);
-
- /* number of interrupts per event, 1 is enough */
- writel(0x0, controller_base + TEMP_MONIDET0);
- writel(0x0, controller_base + TEMP_MONIDET1);
-
- /*
- * The MT8173 thermal controller does not have its own ADC. Instead it
- * uses AHB bus accesses to control the AUXADC. To do this the thermal
- * controller has to be programmed with the physical addresses of the
- * AUXADC registers and with the various bit positions in the AUXADC.
- * Also the thermal controller controls a mux in the APMIXEDSYS register
- * space.
- */
-
- /*
- * this value will be stored to TEMP_PNPMUXADDR (TEMP_SPARE0)
- * automatically by hw
- */
- writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCMUX);
-
- /* AHB address for auxadc mux selection */
- writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
- controller_base + TEMP_ADCMUXADDR);
-
- if (mt->conf->version == MTK_THERMAL_V1) {
- /* AHB address for pnp sensor mux selection */
- writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
- controller_base + TEMP_PNPMUXADDR);
- }
-
- /* AHB value for auxadc enable */
- writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
-
- /* AHB address for auxadc enable (channel 0 immediate mode selected) */
- writel(auxadc_phys_base + AUXADC_CON1_SET_V,
- controller_base + TEMP_ADCENADDR);
-
- /* AHB address for auxadc valid bit */
- writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
- controller_base + TEMP_ADCVALIDADDR);
-
- /* AHB address for auxadc voltage output */
- writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
- controller_base + TEMP_ADCVOLTADDR);
-
- /* read valid & voltage are at the same register */
- writel(0x0, controller_base + TEMP_RDCTRL);
-
- /* indicate where the valid bit is */
- writel(TEMP_ADCVALIDMASK_VALID_HIGH | TEMP_ADCVALIDMASK_VALID_POS(12),
- controller_base + TEMP_ADCVALIDMASK);
-
- /* no shift */
- writel(0x0, controller_base + TEMP_ADCVOLTAGESHIFT);
-
- /* enable auxadc mux write transaction */
- writel(TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
- controller_base + TEMP_ADCWRITECTRL);
-
- for (i = 0; i < conf->bank_data[num].num_sensors; i++)
- writel(conf->sensor_mux_values[conf->bank_data[num].sensors[i]],
- mt->thermal_base + conf->adcpnp[i]);
-
- writel((1 << conf->bank_data[num].num_sensors) - 1,
- controller_base + TEMP_MONCTL0);
-
- writel(TEMP_ADCWRITECTRL_ADC_PNP_WRITE |
- TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
- controller_base + TEMP_ADCWRITECTRL);
-
- mtk_thermal_put_bank(bank);
-}
-
-static u64 of_get_phys_base(struct device_node *np)
-{
- u64 size64;
- const __be32 *regaddr_p;
-
- regaddr_p = of_get_address(np, 0, &size64, NULL);
- if (!regaddr_p)
- return OF_BAD_ADDR;
-
- return of_translate_address(np, regaddr_p);
-}
-
-static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
-{
- int i;
-
- if (!(buf[0] & CALIB_BUF0_VALID_V1))
- return -EINVAL;
-
- mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
-
- for (i = 0; i < mt->conf->num_sensors; i++) {
- switch (mt->conf->vts_index[i]) {
- case VTS1:
- mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
- break;
- case VTS2:
- mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
- break;
- case VTS3:
- mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
- break;
- case VTS4:
- mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
- break;
- case VTS5:
- mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
- break;
- case VTSABB:
- mt->vts[VTSABB] =
- CALIB_BUF2_VTS_TSABB_V1(buf[2]);
- break;
- default:
- break;
- }
- }
-
- mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
- if (CALIB_BUF1_ID_V1(buf[1]) &
- CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
- mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
- else
- mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
-
- return 0;
-}
-
-static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
-{
- if (!CALIB_BUF1_VALID_V2(buf[1]))
- return -EINVAL;
-
- mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
- mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
- mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
- mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
- mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
- mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
- mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
- mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
-
- return 0;
-}
-
-static int mtk_thermal_get_calibration_data(struct device *dev,
- struct mtk_thermal *mt)
-{
- struct nvmem_cell *cell;
- u32 *buf;
- size_t len;
- int i, ret = 0;
-
- /* Start with default values */
- mt->adc_ge = 512;
- for (i = 0; i < mt->conf->num_sensors; i++)
- mt->vts[i] = 260;
- mt->degc_cali = 40;
- mt->o_slope = 0;
-
- cell = nvmem_cell_get(dev, "calibration-data");
- if (IS_ERR(cell)) {
- if (PTR_ERR(cell) == -EPROBE_DEFER)
- return PTR_ERR(cell);
- return 0;
- }
-
- buf = (u32 *)nvmem_cell_read(cell, &len);
-
- nvmem_cell_put(cell);
-
- if (IS_ERR(buf))
- return PTR_ERR(buf);
-
- if (len < 3 * sizeof(u32)) {
- dev_warn(dev, "invalid calibration data\n");
- ret = -EINVAL;
- goto out;
- }
-
- if (mt->conf->version == MTK_THERMAL_V1)
- ret = mtk_thermal_extract_efuse_v1(mt, buf);
- else
- ret = mtk_thermal_extract_efuse_v2(mt, buf);
-
- if (ret) {
- dev_info(dev, "Device not calibrated, using default calibration values\n");
- ret = 0;
- }
-
-out:
- kfree(buf);
-
- return ret;
-}
-
-static const struct of_device_id mtk_thermal_of_match[] = {
- {
- .compatible = "mediatek,mt8173-thermal",
- .data = (void *)&mt8173_thermal_data,
- },
- {
- .compatible = "mediatek,mt2701-thermal",
- .data = (void *)&mt2701_thermal_data,
- },
- {
- .compatible = "mediatek,mt2712-thermal",
- .data = (void *)&mt2712_thermal_data,
- },
- {
- .compatible = "mediatek,mt7622-thermal",
- .data = (void *)&mt7622_thermal_data,
- },
- {
- .compatible = "mediatek,mt8183-thermal",
- .data = (void *)&mt8183_thermal_data,
- }, {
- },
-};
-MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
-
-static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
-{
- int tmp;
-
- tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
- tmp &= ~(0x37);
- tmp |= 0x1;
- writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
- udelay(200);
-}
-
-static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
- void __iomem *auxadc_base)
-{
- int tmp;
-
- writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
- writel(0x1, mt->thermal_base + TEMP_MONCTL0);
- tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
- writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
-}
-
-static int mtk_thermal_probe(struct platform_device *pdev)
-{
- int ret, i, ctrl_id;
- struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node;
- struct mtk_thermal *mt;
- struct resource *res;
- u64 auxadc_phys_base, apmixed_phys_base;
- struct thermal_zone_device *tzdev;
- void __iomem *apmixed_base, *auxadc_base;
-
- mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
- if (!mt)
- return -ENOMEM;
-
- mt->conf = of_device_get_match_data(&pdev->dev);
-
- mt->clk_peri_therm = devm_clk_get(&pdev->dev, "therm");
- if (IS_ERR(mt->clk_peri_therm))
- return PTR_ERR(mt->clk_peri_therm);
-
- mt->clk_auxadc = devm_clk_get(&pdev->dev, "auxadc");
- if (IS_ERR(mt->clk_auxadc))
- return PTR_ERR(mt->clk_auxadc);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mt->thermal_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(mt->thermal_base))
- return PTR_ERR(mt->thermal_base);
-
- ret = mtk_thermal_get_calibration_data(&pdev->dev, mt);
- if (ret)
- return ret;
-
- mutex_init(&mt->lock);
-
- mt->dev = &pdev->dev;
-
- auxadc = of_parse_phandle(np, "mediatek,auxadc", 0);
- if (!auxadc) {
- dev_err(&pdev->dev, "missing auxadc node\n");
- return -ENODEV;
- }
-
- auxadc_base = of_iomap(auxadc, 0);
- auxadc_phys_base = of_get_phys_base(auxadc);
-
- of_node_put(auxadc);
-
- if (auxadc_phys_base == OF_BAD_ADDR) {
- dev_err(&pdev->dev, "Can't get auxadc phys address\n");
- return -EINVAL;
- }
-
- apmixedsys = of_parse_phandle(np, "mediatek,apmixedsys", 0);
- if (!apmixedsys) {
- dev_err(&pdev->dev, "missing apmixedsys node\n");
- return -ENODEV;
- }
-
- apmixed_base = of_iomap(apmixedsys, 0);
- apmixed_phys_base = of_get_phys_base(apmixedsys);
-
- of_node_put(apmixedsys);
-
- if (apmixed_phys_base == OF_BAD_ADDR) {
- dev_err(&pdev->dev, "Can't get auxadc phys address\n");
- return -EINVAL;
- }
-
- ret = device_reset_optional(&pdev->dev);
- if (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;
- }
-
- ret = clk_prepare_enable(mt->clk_peri_therm);
- if (ret) {
- dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);
- goto err_disable_clk_auxadc;
- }
-
- if (mt->conf->version == MTK_THERMAL_V2) {
- mtk_thermal_turn_on_buffer(apmixed_base);
- mtk_thermal_release_periodic_ts(mt, auxadc_base);
- }
-
- for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
- for (i = 0; i < mt->conf->num_banks; i++)
- mtk_thermal_init_bank(mt, i, apmixed_phys_base,
- auxadc_phys_base, ctrl_id);
-
- platform_set_drvdata(pdev, mt);
-
- tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, mt,
- &mtk_thermal_ops);
- if (IS_ERR(tzdev)) {
- ret = PTR_ERR(tzdev);
- goto err_disable_clk_peri_therm;
- }
-
- return 0;
-
-err_disable_clk_peri_therm:
- clk_disable_unprepare(mt->clk_peri_therm);
-err_disable_clk_auxadc:
- clk_disable_unprepare(mt->clk_auxadc);
-
- return ret;
-}
-
-static int mtk_thermal_remove(struct platform_device *pdev)
-{
- struct mtk_thermal *mt = platform_get_drvdata(pdev);
-
- clk_disable_unprepare(mt->clk_peri_therm);
- clk_disable_unprepare(mt->clk_auxadc);
-
- return 0;
-}
-
-static struct platform_driver mtk_thermal_driver = {
- .probe = mtk_thermal_probe,
- .remove = mtk_thermal_remove,
- .driver = {
- .name = "mtk-thermal",
- .of_match_table = mtk_thermal_of_match,
- },
-};
-
-module_platform_driver(mtk_thermal_driver);
-
-MODULE_AUTHOR("Michael Kao <michael.kao@...iatek.com>");
-MODULE_AUTHOR("Louis Yu <louis.yu@...iatek.com>");
-MODULE_AUTHOR("Dawei Chien <dawei.chien@...iatek.com>");
-MODULE_AUTHOR("Sascha Hauer <s.hauer@...gutronix.de>");
-MODULE_AUTHOR("Hanyi Wu <hanyi.wu@...iatek.com>");
-MODULE_DESCRIPTION("Mediatek thermal driver");
-MODULE_LICENSE("GPL v2");
--
1.8.1.1.dirty
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