| Message ID | 20220512122433.1399802-4-abailon@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Daniel Lezcano |
| Headers | show |
| Series | Add LVTS architecture thermal | expand |
On 12/05/2022 14:24, Alexandre Bailon wrote: > From: Michael Kao <michael.kao@mediatek.com> > > Add a LVTS (Low voltage thermal sensor) driver to report junction > temperatures in Mediatek SoC and register the maximum temperature > of sensors and each sensor as a thermal zone. > > Signed-off-by: Yu-Chia Chang <ethan.chang@mediatek.com> > Signed-off-by: Michael Kao <michael.kao@mediatek.com> > Signed-off-by: Ben Tseng <ben.tseng@mediatek.com> > Signed-off-by: Alexandre Bailon <abailon@baylibre.com> > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x200, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS6_0, MT6873_TS6_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT1, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(5), > + }, > + [6] = { > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x300, > + .num_sensor = 3, > + .sensor_map = {MT6873_TS7_0, MT6873_TS7_1, MT6873_TS7_2}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT2, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(6), > + } > +}; > + > +static struct lvts_data mt6873_lvts_data = { Most of your structures should be const. > + .num_domain = MT6873_NUM_DOMAIN, > + .num_tc = MT6873_NUM_LVTS, > + .tc = mt6873_tc_settings, > + .num_sensor = MT6873_NUM_TS, > + .ops = { > + .efuse_to_cal_data = mt6873_efuse_to_cal_data, > + .device_enable_and_init = device_enable_and_init_v4, > + .device_enable_auto_rck = device_enable_auto_rck_v4, > + .device_read_count_rc_n = device_read_count_rc_n_v4, > + .set_cal_data = set_calibration_data_v4, > + .init_controller = init_controller_v4, > + }, > + .feature_bitmap = FEATURE_DEVICE_AUTO_RCK, > + .num_efuse_addr = 22, > + .num_efuse_block = 1, > + .cal_data = { > + .default_golden_temp = 50, > + .default_count_r = 35000, > + .default_count_rc = 2750, > + }, > + .coeff = { > + .a = -250460, > + .b = 250460, > + }, > +}; > + > +/*================================================== > + *================================================== > + * Support chips > + *================================================== > + */ This is not a comment in Linux coding style. Please skip all such headers. Code should have pointers to const when not modifying... > +static const struct of_device_id lvts_of_match[] = { > + { > + .compatible = "mediatek,mt6873-lvts", > + .data = (void *)&mt6873_lvts_data, > + }, > + { > + }, > +}; > +MODULE_DEVICE_TABLE(of, lvts_of_match); > +/*==================================================*/ > +static struct platform_driver soc_temp_lvts = { > + .probe = lvts_probe, > + .remove = lvts_remove, > + .suspend = lvts_suspend, > + .resume = lvts_resume, > + .driver = { > + .name = "mtk-soc-temp-lvts", > + .of_match_table = lvts_of_match, > + }, > +}; > + > +module_platform_driver(soc_temp_lvts); > +MODULE_AUTHOR("Yu-Chia Chang <ethan.chang@mediatek.com>"); > +MODULE_AUTHOR("Michael Kao <michael.kao@mediatek.com>"); > +MODULE_DESCRIPTION("Mediatek soc temperature driver"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/thermal/mediatek/soc_temp_lvts.h b/drivers/thermal/mediatek/soc_temp_lvts.h > new file mode 100644 > index 000000000000..77c64145aa17 > --- /dev/null > +++ b/drivers/thermal/mediatek/soc_temp_lvts.h > @@ -0,0 +1,312 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2020 MediaTek Inc. > + */ > + > +#ifndef __MTK_SOC_TEMP_LVTS_H__ > +#define __MTK_SOC_TEMP_LVTS_H__ > + > +/* LVTS HW filter settings > + * 000: Get one sample > + * 001: Get 2 samples and average them > + * 010: Get 4 samples, drop max and min, then average the rest of 2 samples > + * 011: Get 6 samples, drop max and min, then average the rest of 4 samples > + * 100: Get 10 samples, drop max and min, then average the rest of 8 samples > + * 101: Get 18 samples, drop max and min, then average the rest of 16 samples > + */ > +enum lvts_hw_filter { > + LVTS_FILTER_1, > + LVTS_FILTER_2, > + LVTS_FILTER_2_OF_4, > + LVTS_FILTER_4_OF_6, > + LVTS_FILTER_8_OF_10, > + LVTS_FILTER_16_OF_18 > +}; > + > +enum lvts_sensing_point { > + SENSING_POINT0, > + SENSING_POINT1, > + SENSING_POINT2, > + SENSING_POINT3, > + ALL_SENSING_POINTS > +}; > + > +/*================================================== > + * Data structure > + *================================================== > + */ > +struct lvts_data; > + > +struct speed_settings { > + unsigned int period_unit; > + unsigned int group_interval_delay; > + unsigned int filter_interval_delay; > + unsigned int sensor_interval_delay; > +}; > + > +struct tc_settings { > + unsigned int domain_index; > + unsigned int addr_offset; > + unsigned int num_sensor; > + unsigned int sensor_map[ALL_SENSING_POINTS]; /* In sensor ID */ > + struct speed_settings tc_speed; > + /* HW filter setting Missing /* in starting line, it's not a network subsystem. Same in other places. > + * 000: Get one sample > + * 001: Get 2 samples and average them > + * 010: Get 4 samples, drop max and min, then average the rest of 2 samples > + * 011: Get 6 samples, drop max and min, then average the rest of 4 samples > + * 100: Get 10 samples, drop max and min, then average the rest of 8 samples > + * 101: Get 18 samples, drop max and min, then average the rest of 16 samples > + */ > + unsigned int hw_filter; > + /* Dominator_sensing point is used to select a sensing point > + * and reference its temperature to trigger Thermal HW Reboot > + * When it is ALL_SENSING_POINTS, it will select all sensing points > + */ > + int dominator_sensing_point; > + int hw_reboot_trip_point; /* -274000: Disable HW reboot */ > + unsigned int irq_bit; > +}; > + > +struct formula_coeff { > + int a; > + int b; > + unsigned int golden_temp; > +}; > + > +struct sensor_cal_data { > + int use_fake_efuse; /* 1: Use fake efuse, 0: Use real efuse */ > + unsigned int golden_temp; > + unsigned int *count_r; > + unsigned int *count_rc; > + unsigned int *count_rc_now; > + > + unsigned int default_golden_temp; > + unsigned int default_count_r; > + unsigned int default_count_rc; > +}; > + > +struct platform_ops { > + void (*efuse_to_cal_data)(struct lvts_data *lvts_data); > + void (*device_enable_and_init)(struct lvts_data *lvts_data); > + void (*device_enable_auto_rck)(struct lvts_data *lvts_data); > + int (*device_read_count_rc_n)(struct lvts_data *lvts_data); > + void (*set_cal_data)(struct lvts_data *lvts_data); > + void (*init_controller)(struct lvts_data *lvts_data); > +}; > + > +struct power_domain { > + void __iomem *base; /* LVTS base addresses */ > + unsigned int irq_num; /* LVTS interrupt numbers */ > + struct reset_control *reset; > +}; > + > +struct sensor_data { > + void __iomem *base; /* Sensor base address */ > + int offset; /* Sensor offset */ > +}; > + > +struct lvts_data { > + struct device *dev; > + struct clk *clk; > + unsigned int num_domain; > + struct power_domain *domain; > + > + int num_tc; /* Number of LVTS thermal controllers */ > + struct tc_settings *tc; > + int counting_window_us; /* LVTS device counting window */ > + > + int num_sensor; /* Number of sensors in this platform */ > + void __iomem **reg; > + > + struct platform_ops ops; > + int feature_bitmap; /* Show what features are enabled */ > + > + unsigned int num_efuse_addr; > + unsigned int *efuse; > + unsigned int num_efuse_block; /* Number of contiguous efuse indexes */ > + struct sensor_cal_data cal_data; > + struct formula_coeff coeff; > +}; > + > +struct soc_temp_tz { > + unsigned int id; /* if id is 0, get max temperature of all sensors */ > + struct lvts_data *lvts_data; > +}; > + > +struct match_entry { > + char chip[32]; > + struct lvts_data *lvts_data; Please do not mix up indentation of members. In one place you use it, in other not. Entire code should be consistent, not a mixup of ten different coding styles. > +}; Best regards, Krzysztof
On Thu, 2022-05-12 at 14:24 +0200, Alexandre Bailon wrote: > From: Michael Kao <michael.kao@mediatek.com> > > Add a LVTS (Low voltage thermal sensor) driver to report junction > temperatures in Mediatek SoC and register the maximum temperature > of sensors and each sensor as a thermal zone. > > Signed-off-by: Yu-Chia Chang <ethan.chang@mediatek.com> > Signed-off-by: Michael Kao <michael.kao@mediatek.com> > Signed-off-by: Ben Tseng <ben.tseng@mediatek.com> > Signed-off-by: Alexandre Bailon <abailon@baylibre.com> > --- > drivers/thermal/mediatek/Kconfig | 10 + > drivers/thermal/mediatek/Makefile | 1 + > drivers/thermal/mediatek/soc_temp.c | 2 +- > drivers/thermal/mediatek/soc_temp_lvts.c | 1280 > ++++++++++++++++++++++ > drivers/thermal/mediatek/soc_temp_lvts.h | 312 ++++++ > 5 files changed, 1604 insertions(+), 1 deletion(-) > create mode 100644 drivers/thermal/mediatek/soc_temp_lvts.c > create mode 100644 drivers/thermal/mediatek/soc_temp_lvts.h > > diff --git a/drivers/thermal/mediatek/Kconfig > b/drivers/thermal/mediatek/Kconfig > index 0351e73170b7..d716d0372e1e 100644 > --- a/drivers/thermal/mediatek/Kconfig > +++ b/drivers/thermal/mediatek/Kconfig > @@ -20,4 +20,14 @@ config MTK_SOC_THERMAL > configures thermal controllers to collect temperature > via AUXADC interface. > > +config MTK_SOC_THERMAL_LVTS > + tristate "LVTS (Low voltage thermal sensor) driver for > Mediatek SoCs" > + depends on HAS_IOMEM > + depends on NVMEM > + depends on RESET_TI_SYSCON > + help > + Enable this option if you want to get SoC temperature > + information for Mediatek platforms. This driver > + configures LVTS thermal controllers to collect > temperatures > + via Analog Serial Interface(ASIF). > endif > diff --git a/drivers/thermal/mediatek/Makefile > b/drivers/thermal/mediatek/Makefile > index f75313ddce5e..16ce166e5916 100644 > --- a/drivers/thermal/mediatek/Makefile > +++ b/drivers/thermal/mediatek/Makefile > @@ -1 +1,2 @@ > obj-$(CONFIG_MTK_SOC_THERMAL) += soc_temp.o > +obj-$(CONFIG_MTK_SOC_THERMAL_LVTS) += soc_temp_lvts.o Hello Alexandre, Sorry, please ignore the " remain the original file "mtk_thermal.c" in previous message, I do not notice this. But I think we still need to rename these files. > diff --git a/drivers/thermal/mediatek/soc_temp.c > b/drivers/thermal/mediatek/soc_temp.c > index 79d592f3f60d..4ed78bbadd62 100644 > --- a/drivers/thermal/mediatek/soc_temp.c > +++ b/drivers/thermal/mediatek/soc_temp.c > @@ -23,7 +23,7 @@ > #include <linux/reset.h> > #include <linux/types.h> > > -#include "thermal_hwmon.h" > +#include "../thermal_hwmon.h" > > /* AUXADC Registers */ > #define AUXADC_CON1_SET_V 0x008 > diff --git a/drivers/thermal/mediatek/soc_temp_lvts.c > b/drivers/thermal/mediatek/soc_temp_lvts.c > new file mode 100644 > index 000000000000..145ddd5fe409 > --- /dev/null > +++ b/drivers/thermal/mediatek/soc_temp_lvts.c > @@ -0,0 +1,1280 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (c) 2020 MediaTek Inc. > + */ > + > +#include <linux/bits.h> > +#include <linux/clk.h> > +#include <linux/delay.h> > +#include <linux/interrupt.h> > +#include <linux/io.h> > +#include <linux/iopoll.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/of_irq.h> > +#include <linux/platform_device.h> > +#include <linux/reset.h> > +#include <linux/slab.h> > +#include <linux/string.h> > +#include <linux/thermal.h> > +#include "soc_temp_lvts.h" > + > +/*================================================== > + * Definition or macro function > + *================================================== > + */ > +#define STOP_COUNTING_V4 (DEVICE_WRITE | RG_TSFM_CTRL_0 << 8 | 0x00) > +#define SET_RG_TSFM_LPDLY_V4 (DEVICE_WRITE | RG_TSFM_CTRL_4 << 8 | > 0xA6) > +#define SET_COUNTING_WINDOW_20US1_V4 (DEVICE_WRITE | RG_TSFM_CTRL_2 > << 8 | 0x00) > +#define SET_COUNTING_WINDOW_20US2_V4 (DEVICE_WRITE | RG_TSFM_CTRL_1 > << 8 | 0x20) > +#define TSV2F_CHOP_CKSEL_AND_TSV2F_EN_V4 (DEVICE_WRITE | > RG_TSV2F_CTRL_2 << 8 | 0x84) > +#define TSBG_DEM_CKSEL_X_TSBG_CHOP_EN_V4 (DEVICE_WRITE | > RG_TSV2F_CTRL_4 << 8 | 0x7C) > +#define SET_TS_RSV_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_1 << 8 | 0x8D) > +#define SET_TS_EN_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 << 8 | 0xF4) > +#define TOGGLE_RG_TSV2F_VCO_RST1_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 > << 8 | 0xFC) > +#define TOGGLE_RG_TSV2F_VCO_RST2_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 > << 8 | 0xF4) > + > +#define SET_LVTS_AUTO_RCK_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_6 << 8 | > 0x01) > +#define SELECT_SENSOR_RCK_V4(id) (DEVICE_WRITE | RG_TSV2F_CTRL_5 << > 8 | (id)) > +#define SET_DEVICE_SINGLE_MODE_V4 (DEVICE_WRITE | RG_TSFM_CTRL_3 << > 8 | 0x78) > +#define KICK_OFF_RCK_COUNTING_V4 (DEVICE_WRITE | RG_TSFM_CTRL_0 << 8 > | 0x02) > +#define SET_SENSOR_NO_RCK_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_5 << 8 | > 0x10) > +#define SET_DEVICE_LOW_POWER_SINGLE_MODE_V4 (DEVICE_WRITE | > RG_TSFM_CTRL_3 << 8 | 0xB8) > + > +#define ENABLE_FEATURE(feature) (lvts_data- > >feature_bitmap |= (feature)) > +#define DISABLE_FEATURE(feature) (lvts_data->feature_bitmap &= > (~(feature))) > +#define IS_ENABLE(feature) (lvts_data->feature_bitmap & > (feature)) > + > +#define DISABLE_THERMAL_HW_REBOOT (-274000) > + > +#define CLOCK_26MHZ_CYCLE_NS (38) > +#define BUS_ACCESS_US (2) > + > +#define FEATURE_DEVICE_AUTO_RCK (BIT(0)) > +#define FEATURE_CK26M_ACTIVE (BIT(1)) > +#define CK26M_ACTIVE (((lvts_data->feature_bitmap & > FEATURE_CK26M_ACTIVE) \ > + ? 1 : 0) << 30) > +#define GET_BASE_ADDR(tc_id) \ > + (lvts_data->domain[lvts_data->tc[tc_id].domain_index].base > \ > + + lvts_data->tc[tc_id].addr_offset) > + > +#define SET_TC_SPEED_IN_US(pu, gd, fd, sd) \ > + { \ > + .period_unit = (((pu) * 1000) / (256 * > CLOCK_26MHZ_CYCLE_NS)), \ > + .group_interval_delay = ((gd) / (pu)), \ > + .filter_interval_delay = ((fd) / (pu)), \ > + .sensor_interval_delay = ((sd) / (pu)), \ > + } > + > +#define GET_CAL_DATA_BITMASK(index, h, l) \ > + (((index) < lvts_data->num_efuse_addr) \ > + ? ((lvts_data->efuse[(index)] & GENMASK(h, l)) >> l) \ > + : 0) > + > +#define GET_CAL_DATA_BIT(index, bit) \ > + (((index) < lvts_data->num_efuse_addr) \ > + ? ((lvts_data->efuse[index] & BIT(bit)) >> (bit)) \ > + : 0) > + > +#define GET_TC_SENSOR_NUM(tc_id) \ > + (lvts_data->tc[tc_id].num_sensor) > + > +#define ONE_SAMPLE (lvts_data->counting_window_us + 2 * > BUS_ACCESS_US) > + > +#define NUM_OF_SAMPLE(tc_id) \ > + ((lvts_data->tc[tc_id].hw_filter < LVTS_FILTER_2) ? 1 : \ > + ((lvts_data->tc[tc_id].hw_filter > LVTS_FILTER_16_OF_18) ? 1 : > \ > + ((lvts_data->tc[tc_id].hw_filter == LVTS_FILTER_16_OF_18) ? 18 > :\ > + ((lvts_data->tc[tc_id].hw_filter == LVTS_FILTER_8_OF_10) ? 10 : > \ > + (lvts_data->tc[tc_id].hw_filter * 2))))) > + > +#define PERIOD_UNIT_US(tc_id) \ > + ((lvts_data->tc[tc_id].tc_speed.period_unit * 256 * \ > + CLOCK_26MHZ_CYCLE_NS) / 1000) > +#define FILTER_INT_US(tc_id) \ > + (lvts_data->tc[tc_id].tc_speed.filter_interval_delay \ > + * PERIOD_UNIT_US(tc_id)) > +#define SENSOR_INT_US(tc_id) \ > + (lvts_data->tc[tc_id].tc_speed.sensor_interval_delay \ > + * PERIOD_UNIT_US(tc_id)) > +#define GROUP_INT_US(tc_id) \ > + (lvts_data->tc[tc_id].tc_speed.group_interval_delay \ > + * PERIOD_UNIT_US(tc_id)) > + > +#define SENSOR_LATENCY_US(tc_id) \ > + ((NUM_OF_SAMPLE(tc_id) - 1) * FILTER_INT_US(tc_id) \ > + + NUM_OF_SAMPLE(tc_id) * ONE_SAMPLE) > + > +#define GROUP_LATENCY_US(tc_id) \ > + (GET_TC_SENSOR_NUM(tc_id) * SENSOR_LATENCY_US(tc_id) \ > + + (GET_TC_SENSOR_NUM(tc_id) - 1) * SENSOR_INT_US(tc_id) \ > + + GROUP_INT_US(tc_id)) > + > +/*================================================== > + * LVTS local common code > + *================================================== > + */ > +static int lvts_raw_to_temp(struct formula_coeff *co, unsigned int > msr_raw) > +{ > + /* This function returns degree mC */ > + > + int temp; > + > + temp = (co->a * ((unsigned long long)msr_raw)) >> 14; > + temp = temp + co->golden_temp * 500 + co->b; > + > + return temp; > +} > + > +static unsigned int lvts_temp_to_raw(struct formula_coeff *co, int > temp) > +{ > + unsigned int msr_raw; > + > + msr_raw = div_s64((s64)((co->golden_temp * 500 + co->b - temp)) > << 14, > + (-1 * co->a)); > + > + return msr_raw; > +} > + > +static int soc_temp_lvts_read_temp(void *data, int *temperature) > +{ > + struct soc_temp_tz *lvts_tz = (struct soc_temp_tz *)data; > + struct lvts_data *lvts_data = lvts_tz->lvts_data; > + unsigned int msr_raw; > + > + msr_raw = readl(lvts_data->reg[lvts_tz->id]) & MRS_RAW_MASK; > + if (msr_raw == 0) > + return -EINVAL; > + > + *temperature = lvts_raw_to_temp(&lvts_data->coeff, msr_raw); > + > + return 0; > +} > + > +static const struct thermal_zone_of_device_ops soc_temp_lvts_ops = { > + .get_temp = soc_temp_lvts_read_temp, > +}; > + > +static void lvts_write_device(struct lvts_data *lvts_data, unsigned > int data, > + int tc_id) > +{ > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + > + writel(data, LVTS_CONFIG_0 + base); > + > + usleep_range(5, 15); > +} > + > +static unsigned int lvts_read_device(struct lvts_data *lvts_data, > + unsigned int reg_idx, int tc_id) > +{ > + struct device *dev = lvts_data->dev; > + void __iomem *base; > + unsigned int data; > + int ret; > + > + base = GET_BASE_ADDR(tc_id); > + writel(READ_DEVICE_REG(reg_idx), LVTS_CONFIG_0 + base); > + > + ret = readl_poll_timeout(LVTS_CONFIG_0 + base, data, > + !(data & DEVICE_ACCESS_STARTUS), > + 2, 200); > + if (ret) > + dev_err(dev, > + "Error: LVTS %d DEVICE_ACCESS_START didn't > ready\n", tc_id); > + > + data = readl(LVTSRDATA0_0 + base); > + > + return data; > +} > + > +static void wait_all_tc_sensing_point_idle(struct lvts_data > *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int mask, error_code, is_error; > + void __iomem *base; > + int i, cnt, ret; > + > + mask = BIT(10) | BIT(7) | BIT(0); > + > + for (cnt = 0; cnt < 2; cnt++) { > + is_error = 0; > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + ret = readl_poll_timeout(LVTSMSRCTL1_0 + base, > error_code, > + !(error_code & mask), > 2, 200); > + /* > + * Error code > + * 000: IDLE > + * 001: Write transaction > + * 010: Waiting for read after Write > + * 011: Disable Continue fetching on Device > + * 100: Read transaction > + * 101: Set Device special Register for Voltage > threshold > + * 111: Set TSMCU number for Fetch > + */ > + error_code = ((error_code & BIT(10)) >> 8) + > + ((error_code & BIT(7)) >> 6) + > + (error_code & BIT(0)); > + > + if (ret) > + dev_err(dev, > + "Error LVTS %d sensing points > aren't idle, error_code %d\n", > + i, error_code); > + > + if (error_code != 0) > + is_error = 1; > + } > + > + if (is_error == 0) > + break; > + } > +} > + > +static void lvts_reset(struct lvts_data *lvts_data) > +{ > + int i; > + > + for (i = 0; i < lvts_data->num_domain; i++) { > + if (lvts_data->domain[i].reset) > + reset_control_assert(lvts_data- > >domain[i].reset); > + > + if (lvts_data->domain[i].reset) > + reset_control_deassert(lvts_data- > >domain[i].reset); > + } > +} > + > +static void device_identification(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int i, data; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + > + writel(ENABLE_LVTS_CTRL_CLK, LVTSCLKEN_0 + base); > + > + lvts_write_device(lvts_data, RESET_ALL_DEVICES, i); > + > + lvts_write_device(lvts_data, READ_BACK_DEVICE_ID, i); > + > + /* Check LVTS device ID */ > + data = (readl(LVTS_ID_0 + base) & GENMASK(7, 0)); > + if (data != (0x81 + i)) > + dev_err(dev, "LVTS_TC_%d, Device ID should be > 0x%x, but 0x%x\n", > + i, (0x81 + i), data); > + } > +} > + > +static void disable_all_sensing_points(struct lvts_data *lvts_data) > +{ > + unsigned int i; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + writel(DISABLE_SENSING_POINT, LVTSMONCTL0_0 + base); > + } > +} > + > +static void enable_all_sensing_points(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + unsigned int i, num; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + num = tc[i].num_sensor; > + > + if (num > ALL_SENSING_POINTS) { > + dev_err(dev, > + "%s, LVTS%d, illegal number of sensors: > %d\n", > + __func__, i, tc[i].num_sensor); > + continue; > + } > + > + writel(ENABLE_SENSING_POINT(num), LVTSMONCTL0_0 + > base); > + } > +} > + > +static void set_polling_speed(struct lvts_data *lvts_data, int > tc_id) > +{ > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + unsigned int lvts_mon_ctl_1, lvts_mon_ctl_2; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + > + lvts_mon_ctl_1 = ((tc[tc_id].tc_speed.group_interval_delay << > 20) & GENMASK(29, 20)) | > + (tc[tc_id].tc_speed.period_unit & GENMASK(9, > 0)); > + lvts_mon_ctl_2 = ((tc[tc_id].tc_speed.filter_interval_delay << > 16) & GENMASK(25, 16)) | > + (tc[tc_id].tc_speed.sensor_interval_delay & > GENMASK(9, 0)); > + /* > + * Clock source of LVTS thermal controller is 26MHz. > + * Period unit is a base for all interval delays > + * All interval delays must multiply it to convert a setting to > time. > + * Filter interval delay is a delay between two samples of the > same sensor > + * Sensor interval delay is a delay between two samples of > differnet sensors > + * Group interval delay is a delay between different rounds. > + * For example: > + * If Period unit = C, filter delay = 1, sensor delay = 2, > group delay = 1, > + * and two sensors, TS1 and TS2, are in a LVTS thermal > controller > + * and then > + * Period unit = C * 1/26M * 256 = 12 * 38.46ns * 256 = > 118.149us > + * Filter interval delay = 1 * Period unit = 118.149us > + * Sensor interval delay = 2 * Period unit = 236.298us > + * Group interval delay = 1 * Period unit = 118.149us > + * > + * TS1 TS1 ... TS1 TS2 TS2 ... TS2 TS1... > + * <--> Filter interval delay > + * <--> Sensor interval delay > + * <--> Group > interval delay > + */ > + writel(lvts_mon_ctl_1, LVTSMONCTL1_0 + base); > + writel(lvts_mon_ctl_2, LVTSMONCTL2_0 + base); > + > + dev_info(dev, "%s %d, LVTSMONCTL1_0= 0x%x,LVTSMONCTL2_0= > 0x%x\n", > + __func__, tc_id, readl(LVTSMONCTL1_0 + base), > + readl(LVTSMONCTL2_0 + base)); > +} > + > +static void set_hw_filter(struct lvts_data *lvts_data, int tc_id) > +{ > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + unsigned int option; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + option = tc[tc_id].hw_filter & 0x7; > + /* hw filter > + * 000: Get one sample > + * 001: Get 2 samples and average them > + * 010: Get 4 samples, drop max and min, then average the rest > of 2 samples > + * 011: Get 6 samples, drop max and min, then average the rest > of 4 samples > + * 100: Get 10 samples, drop max and min, then average the rest > of 8 samples > + * 101: Get 18 samples, drop max and min, then average the rest > of 16 samples > + */ > + option = (option << 9) | (option << 6) | (option << 3) | > option; > + > + writel(option, LVTSMSRCTL0_0 + base); > + dev_info(dev, "%s %d, LVTSMSRCTL0_0= 0x%x\n", > + __func__, tc_id, readl(LVTSMSRCTL0_0 + base)); > +} > + > +static int get_dominator_index(struct lvts_data *lvts_data, int > tc_id) > +{ > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + int d_index; > + > + if (tc[tc_id].dominator_sensing_point == ALL_SENSING_POINTS) { > + d_index = ALL_SENSING_POINTS; > + } else if (tc[tc_id].dominator_sensing_point < > + tc[tc_id].num_sensor){ > + d_index = tc[tc_id].dominator_sensing_point; > + } else { > + dev_err(dev, > + "Error: LVTS%d, dominator_sensing_point= %d > should smaller than num_sensor= %d\n", > + tc_id, tc[tc_id].dominator_sensing_point, > + tc[tc_id].num_sensor); > + > + dev_err(dev, "Use the sensing point 0 as the dominated > sensor\n"); > + d_index = SENSING_POINT0; > + } > + > + return d_index; > +} > + > +static void disable_hw_reboot_interrupt(struct lvts_data *lvts_data, > int tc_id) > +{ > + unsigned int temp; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + > + /* LVTS thermal controller has two interrupts for thermal HW > reboot > + * One is for AP SW and the other is for RGU > + * The interrupt of AP SW can turn off by a bit of a register, > but > + * the other for RGU cannot. > + * To prevent rebooting device accidentally, we are going to > add > + * a huge offset to LVTS and make LVTS always report extremely > low > + * temperature. > + */ > + > + /* After adding the huge offset 0x3FFF, LVTS alawys adds the > + * offset to MSR_RAW. > + * When MSR_RAW is larger, SW will convert lower temperature/ > + */ > + temp = readl(LVTSPROTCTL_0 + base); > + writel(temp | 0x3FFF, LVTSPROTCTL_0 + base); > + > + /* Disable the interrupt of AP SW */ > + temp = readl(LVTSMONINT_0 + base); > + writel(temp & ~(STAGE3_INT_EN), LVTSMONINT_0 + base); > +} > + > +static void enable_hw_reboot_interrupt(struct lvts_data *lvts_data, > int tc_id) > +{ > + unsigned int temp; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + > + /* Enable the interrupt of AP SW */ > + temp = readl(LVTSMONINT_0 + base); > + writel(temp | STAGE3_INT_EN, LVTSMONINT_0 + base); > + /* Clear the offset */ > + temp = readl(LVTSPROTCTL_0 + base); > + writel(temp & ~PROTOFFSET, LVTSPROTCTL_0 + base); > +} > + > +static void set_tc_hw_reboot_threshold(struct lvts_data *lvts_data, > + int trip_point, int tc_id) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int msr_raw, temp, config, d_index; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + d_index = get_dominator_index(lvts_data, tc_id); > + > + dev_info(dev, "%s: LVTS%d, the dominator sensing point= %d\n", > + __func__, tc_id, d_index); > + > + disable_hw_reboot_interrupt(lvts_data, tc_id); > + > + temp = readl(LVTSPROTCTL_0 + base); > + if (d_index == ALL_SENSING_POINTS) { > + /* Maximum of 4 sensing points */ > + config = (0x1 << 16); > + writel(config | temp, LVTSPROTCTL_0 + base); > + } else { > + /* Select protection sensor */ > + config = ((d_index << 2) + 0x2) << 16; > + writel(config | temp, LVTSPROTCTL_0 + base); > + } > + > + msr_raw = lvts_temp_to_raw(&lvts_data->coeff, trip_point); > + writel(msr_raw, LVTSPROTTC_0 + base); > + > + enable_hw_reboot_interrupt(lvts_data, tc_id); > +} > + > +static void set_all_tc_hw_reboot(struct lvts_data *lvts_data) > +{ > + struct tc_settings *tc = lvts_data->tc; > + int i, trip_point; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + trip_point = tc[i].hw_reboot_trip_point; > + > + if (tc[i].num_sensor == 0) > + continue; > + > + if (trip_point == DISABLE_THERMAL_HW_REBOOT) > + continue; > + > + set_tc_hw_reboot_threshold(lvts_data, trip_point, i); > + } > +} > + > +static int lvts_init(struct lvts_data *lvts_data) > +{ > + struct platform_ops *ops = &lvts_data->ops; > + struct device *dev = lvts_data->dev; > + int ret; > + > + ret = clk_prepare_enable(lvts_data->clk); > + if (ret) { > + dev_err(dev, > + "Error: Failed to enable lvts controller clock: > %d\n", > + ret); > + return ret; > + } > + > + lvts_reset(lvts_data); > + > + device_identification(lvts_data); > + if (ops->device_enable_and_init) > + ops->device_enable_and_init(lvts_data); > + > + if (IS_ENABLE(FEATURE_DEVICE_AUTO_RCK)) { > + if (ops->device_enable_auto_rck) > + ops->device_enable_auto_rck(lvts_data); > + } else { > + if (ops->device_read_count_rc_n) > + ops->device_read_count_rc_n(lvts_data); > + } > + > + if (ops->set_cal_data) > + ops->set_cal_data(lvts_data); > + > + disable_all_sensing_points(lvts_data); > + wait_all_tc_sensing_point_idle(lvts_data); > + if (ops->init_controller) > + ops->init_controller(lvts_data); > + enable_all_sensing_points(lvts_data); > + > + set_all_tc_hw_reboot(lvts_data); > + > + return 0; > +} > + > +static int prepare_calibration_data(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + struct sensor_cal_data *cal_data = &lvts_data->cal_data; > + struct platform_ops *ops = &lvts_data->ops; > + int i, offset, size; > + char buffer[512]; > + > + cal_data->count_r = devm_kcalloc(dev, lvts_data->num_sensor, > + sizeof(*cal_data->count_r), > GFP_KERNEL); > + if (!cal_data->count_r) > + return -ENOMEM; > + > + cal_data->count_rc = devm_kcalloc(dev, lvts_data->num_sensor, > + sizeof(*cal_data->count_rc), > GFP_KERNEL); > + if (!cal_data->count_rc) > + return -ENOMEM; > + > + if (ops->efuse_to_cal_data) > + ops->efuse_to_cal_data(lvts_data); > + > + cal_data->use_fake_efuse = 1; > + if (cal_data->golden_temp != 0) { > + cal_data->use_fake_efuse = 0; > + } else { > + for (i = 0; i < lvts_data->num_sensor; i++) { > + if (cal_data->count_r[i] != 0 || > + cal_data->count_rc[i] != 0) { > + cal_data->use_fake_efuse = 0; > + break; > + } > + } > + } > + > + if (cal_data->use_fake_efuse) { > + /* It means all efuse data are equal to 0 */ > + dev_err(dev, > + "[lvts_cal] This sample is not calibrated, fake > !!\n"); > + > + cal_data->golden_temp = cal_data->default_golden_temp; > + for (i = 0; i < lvts_data->num_sensor; i++) { > + cal_data->count_r[i] = cal_data- > >default_count_r; > + cal_data->count_rc[i] = cal_data- > >default_count_rc; > + } > + } > + > + lvts_data->coeff.golden_temp = cal_data->golden_temp; > + > + dev_info(dev, "[lvts_cal] golden_temp = %d\n", cal_data- > >golden_temp); > + > + size = sizeof(buffer); > + offset = snprintf(buffer, size, "[lvts_cal] > num:g_count:g_count_rc "); > + for (i = 0; i < lvts_data->num_sensor; i++) > + offset += snprintf(buffer + offset, size - offset, > "%d:%d:%d ", > + i, cal_data->count_r[i], cal_data- > >count_rc[i]); > + > + buffer[offset] = '\0'; > + dev_info(dev, "%s\n", buffer); > + > + return 0; > +} > + > +static int get_calibration_data(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + char cell_name[8]; > + struct nvmem_cell *cell; > + u32 *buf; > + size_t len; > + int i, j, index = 0, ret; > + > + lvts_data->efuse = devm_kcalloc(dev, lvts_data->num_efuse_addr, > + sizeof(*lvts_data->efuse), > GFP_KERNEL); > + if (!lvts_data->efuse) > + return -ENOMEM; > + > + for (i = 0; i < lvts_data->num_efuse_block; i++) { > + snprintf(cell_name, sizeof(cell_name), "e_data%d", i + > 1); > + cell = nvmem_cell_get(dev, cell_name); > + if (IS_ERR(cell)) { > + dev_err(dev, "Error: Failed to get nvmem cell > %s\n", cell_name); > + return PTR_ERR(cell); > + } > + > + buf = (u32 *)nvmem_cell_read(cell, &len); > + nvmem_cell_put(cell); > + > + if (IS_ERR(buf)) > + return PTR_ERR(buf); > + > + for (j = 0; j < (len / sizeof(u32)); j++) { > + if (index >= lvts_data->num_efuse_addr) { > + dev_err(dev, "Array efuse is going to > overflow"); > + kfree(buf); > + return -EINVAL; > + } > + > + lvts_data->efuse[index] = buf[j]; > + index++; > + } > + > + kfree(buf); > + } > + > + ret = prepare_calibration_data(lvts_data); > + > + return ret; > +} > + > +static int lvts_init_tc_regs(struct device *dev, struct lvts_data > *lvts_data) > +{ > + struct tc_settings *tc = lvts_data->tc; > + unsigned int i, j, s_index; > + void __iomem *base; > + > + lvts_data->reg = devm_kcalloc(dev, lvts_data->num_sensor, > + sizeof(*lvts_data->reg), > GFP_KERNEL); > + if (!lvts_data->reg) > + return -ENOMEM; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + for (j = 0; j < tc[i].num_sensor; j++) { > + s_index = tc[i].sensor_map[j]; > + lvts_data->reg[s_index] = LVTSMSR0_0 + base + > 0x4 * j; > + } > + } > + > + return 0; > +} > + > +static int of_update_lvts_data(struct lvts_data *lvts_data, > + struct platform_device *pdev) > +{ > + struct device *dev = lvts_data->dev; > + struct power_domain *domain; > + struct resource *res; > + unsigned int i; > + int ret; > + > + lvts_data->clk = devm_clk_get(dev, "lvts_clk"); > + if (IS_ERR(lvts_data->clk)) > + return PTR_ERR(lvts_data->clk); > + > + domain = devm_kcalloc(dev, lvts_data->num_domain, > sizeof(*domain), GFP_KERNEL); > + if (!domain) > + return -ENOMEM; > + > + for (i = 0; i < lvts_data->num_domain; i++) { > + /* Get base address */ > + res = platform_get_resource(pdev, IORESOURCE_MEM, i); > + if (!res) { > + dev_err(dev, "No IO resource, index %d\n", i); > + return -ENXIO; > + } > + > + domain[i].base = devm_ioremap_resource(dev, res); > + if (IS_ERR(domain[i].base)) { > + dev_err(dev, "Failed to remap io, index %d\n", > i); > + return PTR_ERR(domain[i].base); > + } > + > + /* Get interrupt number */ > + res = platform_get_resource(pdev, IORESOURCE_IRQ, i); > + if (!res) { > + dev_err(dev, "No irq resource, index %d\n", i); > + return -EINVAL; > + } > + domain[i].irq_num = res->start; > + > + /* Get reset control */ > + domain[i].reset = devm_reset_control_get_by_index(dev, > i); For this, we don;t use ti reset, so we can not get the reset by this function. I implement another series for mtk reset[1]. Please refer to the modification for MT8186 to get the reset controller[2]. [1]: https://patchwork.kernel.org/project/linux-mediatek/list/?series=637849 [2]: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3593597 > + if (IS_ERR(domain[i].reset)) { > + dev_err(dev, "Failed to get, index %d\n", i); > + return PTR_ERR(domain[i].reset); > + } > + } > + > + lvts_data->domain = domain; > + > + ret = lvts_init_tc_regs(dev, lvts_data); > + if (ret) > + return ret; > + > + ret = get_calibration_data(lvts_data); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static void lvts_device_close(struct lvts_data *lvts_data) > +{ > + unsigned int i; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + lvts_write_device(lvts_data, RESET_ALL_DEVICES, i); > + writel(DISABLE_LVTS_CTRL_CLK, LVTSCLKEN_0 + base); > + } > +} > + > +static void lvts_close(struct lvts_data *lvts_data) > +{ > + disable_all_sensing_points(lvts_data); > + wait_all_tc_sensing_point_idle(lvts_data); > + lvts_device_close(lvts_data); > + clk_disable_unprepare(lvts_data->clk); > +} > + > +static void tc_irq_handler(struct lvts_data *lvts_data, int tc_id) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int ret = 0; > + void __iomem *base; > + > + base = GET_BASE_ADDR(tc_id); > + > + ret = readl(LVTSMONINTSTS_0 + base); > + /* Write back to clear interrupt status */ > + writel(ret, LVTSMONINTSTS_0 + base); > + > + dev_info(dev, "[Thermal IRQ] LVTS thermal controller %d, > LVTSMONINTSTS=0x%08x\n", > + tc_id, ret); > + > + if (ret & THERMAL_PROTECTION_STAGE_3) > + dev_info(dev, > + "[Thermal IRQ]: Thermal protection stage 3 > interrupt triggered\n"); > +} > + > +static irqreturn_t irq_handler(int irq, void *dev_id) > +{ > + struct lvts_data *lvts_data = (struct lvts_data *)dev_id; > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + unsigned int i, *irq_bitmap; > + void __iomem *base; > + > + irq_bitmap = kcalloc(lvts_data->num_domain, > sizeof(*irq_bitmap), GFP_ATOMIC); > + > + if (!irq_bitmap) > + return IRQ_NONE; > + > + for (i = 0; i < lvts_data->num_domain; i++) { > + base = lvts_data->domain[i].base; > + irq_bitmap[i] = readl(THERMINTST + base); > + dev_info(dev, "%s : THERMINTST = 0x%x\n", __func__, > irq_bitmap[i]); > + } > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + if ((irq_bitmap[tc[i].domain_index] & tc[i].irq_bit) == > 0) > + tc_irq_handler(lvts_data, i); > + } > + > + kfree(irq_bitmap); > + > + return IRQ_HANDLED; > +} > + > +static int lvts_register_irq_handler(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int i; > + int ret; > + > + for (i = 0; i < lvts_data->num_domain; i++) { > + ret = devm_request_irq(dev, lvts_data- > >domain[i].irq_num, irq_handler, > + IRQF_TRIGGER_HIGH, "mtk_lvts", > lvts_data); > + > + if (ret) { > + dev_err(dev, "Failed to register LVTS IRQ, ret > %d, domain %d irq_num %d\n", > + ret, i, lvts_data->domain[i].irq_num); > + lvts_close(lvts_data); > + return ret; > + } > + } > + > + return 0; > +} > + > +static int lvts_register_thermal_zones(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + struct thermal_zone *tzdev; > + struct soc_temp_tz *lvts_tz; > + int i, ret; > + > + for (i = 0; i < lvts_data->num_sensor; i++) { > + lvts_tz = devm_kzalloc(dev, sizeof(*lvts_tz), > GFP_KERNEL); > + if (!lvts_tz) { > + lvts_close(lvts_data); > + return -ENOMEM; > + } > + > + lvts_tz->id = i; > + lvts_tz->lvts_data = lvts_data; > + > + tzdev = devm_thermal_zone_of_sensor_register(dev, > lvts_tz->id, > + lvts_tz, > &soc_temp_lvts_ops); > + > + if (IS_ERR(tzdev)) { > + if (lvts_tz->id != 0) > + return 0; > + > + ret = PTR_ERR(tzdev); > + dev_err(dev, "Error: Failed to register lvts tz > %d, ret = %d\n", > + lvts_tz->id, ret); > + lvts_close(lvts_data); > + return ret; > + } > + } > + > + return 0; > +} > + > +static int lvts_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct lvts_data *lvts_data; > + int ret; > + > + lvts_data = (struct lvts_data *)of_device_get_match_data(dev); > + > + if (!lvts_data) { > + dev_err(dev, "Error: Failed to get lvts platform > data\n"); > + return -ENODATA; can we return use dev_probe_err(...)? > + } > + > + lvts_data->dev = &pdev->dev; > + > + ret = of_update_lvts_data(lvts_data, pdev); > + if (ret) > + return ret; > + > + platform_set_drvdata(pdev, lvts_data); > + > + ret = lvts_init(lvts_data); > + if (ret) > + return ret; > + > + ret = lvts_register_irq_handler(lvts_data); > + if (ret) > + return ret; > + > + ret = lvts_register_thermal_zones(lvts_data); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int lvts_remove(struct platform_device *pdev) > +{ > + struct lvts_data *lvts_data; > + > + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); > + > + lvts_close(lvts_data); > + > + return 0; > +} > + > +static int lvts_suspend(struct platform_device *pdev, pm_message_t > state) > +{ > + struct lvts_data *lvts_data; > + > + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); > + > + lvts_close(lvts_data); > + > + return 0; > +} > + > +static int lvts_resume(struct platform_device *pdev) > +{ > + int ret; > + struct lvts_data *lvts_data; > + > + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); > + > + ret = lvts_init(lvts_data); > + if (ret) > + return ret; > + > + return 0; > +} > + > +/*================================================== > + * LVTS v4 common code > + *================================================== > + */ I don't see other version for this patch. I think we can just use them directly? > +static void device_enable_and_init_v4(struct lvts_data *lvts_data) > +{ > + unsigned int i; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + lvts_write_device(lvts_data, STOP_COUNTING_V4, i); > + lvts_write_device(lvts_data, SET_RG_TSFM_LPDLY_V4, i); > + lvts_write_device(lvts_data, > SET_COUNTING_WINDOW_20US1_V4, i); > + lvts_write_device(lvts_data, > SET_COUNTING_WINDOW_20US2_V4, i); > + lvts_write_device(lvts_data, > TSV2F_CHOP_CKSEL_AND_TSV2F_EN_V4, i); > + lvts_write_device(lvts_data, > TSBG_DEM_CKSEL_X_TSBG_CHOP_EN_V4, i); > + lvts_write_device(lvts_data, SET_TS_RSV_V4, i); > + lvts_write_device(lvts_data, SET_TS_EN_V4, i); > + lvts_write_device(lvts_data, > TOGGLE_RG_TSV2F_VCO_RST1_V4, i); > + lvts_write_device(lvts_data, > TOGGLE_RG_TSV2F_VCO_RST2_V4, i); > + } > + > + lvts_data->counting_window_us = 20; > +} > + > +static void device_enable_auto_rck_v4(struct lvts_data *lvts_data) > +{ > + unsigned int i; > + > + for (i = 0; i < lvts_data->num_tc; i++) > + lvts_write_device(lvts_data, SET_LVTS_AUTO_RCK_V4, i); > +} > + > +static int device_read_count_rc_n_v4(struct lvts_data *lvts_data) > +{ > + /* Resistor-Capacitor Calibration */ > + /* count_RC_N: count RC now */ > + struct device *dev = lvts_data->dev; > + struct tc_settings *tc = lvts_data->tc; > + struct sensor_cal_data *cal_data = &lvts_data->cal_data; > + unsigned int offset, size, s_index, data; > + void __iomem *base; > + int ret, i, j; > + char buffer[512]; > + > + cal_data->count_rc_now = devm_kcalloc(dev, lvts_data- > >num_sensor, > + sizeof(*cal_data- > >count_rc_now), GFP_KERNEL); > + if (!cal_data->count_rc_now) > + return -ENOMEM; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + for (j = 0; j < tc[i].num_sensor; j++) { > + s_index = tc[i].sensor_map[j]; > + > + lvts_write_device(lvts_data, > SELECT_SENSOR_RCK_V4(j), i); > + lvts_write_device(lvts_data, > SET_DEVICE_SINGLE_MODE_V4, i); > + usleep_range(10, 20); > + > + lvts_write_device(lvts_data, > KICK_OFF_RCK_COUNTING_V4, i); > + usleep_range(30, 40); > + > + ret = readl_poll_timeout(LVTS_CONFIG_0 + base, > data, > + !(data & > DEVICE_SENSING_STATUS), 2, 200); > + if (ret) > + dev_err(dev, > + "Error: LVTS %d > DEVICE_SENSING_STATUS didn't ready\n", i); > + > + data = lvts_read_device(lvts_data, 0x00, i); > + > + cal_data->count_rc_now[s_index] = (data & > GENMASK(23, 0)); > + } > + > + /* Recover Setting for Normal Access on > + * temperature fetch > + */ > + lvts_write_device(lvts_data, SET_SENSOR_NO_RCK_V4, i); > + lvts_write_device(lvts_data, > SET_DEVICE_LOW_POWER_SINGLE_MODE_V4, i); > + } > + > + size = sizeof(buffer); > + offset = snprintf(buffer, size, "[COUNT_RC_NOW] "); > + for (i = 0; i < lvts_data->num_sensor; i++) > + offset += snprintf(buffer + offset, size - offset, > "%d:%d ", > + i, cal_data->count_rc_now[i]); > + > + buffer[offset] = '\0'; > + dev_info(dev, "%s\n", buffer); > + > + return 0; > +} > + > +static void set_calibration_data_v4(struct lvts_data *lvts_data) > +{ > + struct tc_settings *tc = lvts_data->tc; > + struct sensor_cal_data *cal_data = &lvts_data->cal_data; > + unsigned int i, j, s_index, e_data; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + > + for (j = 0; j < tc[i].num_sensor; j++) { > + s_index = tc[i].sensor_map[j]; > + if (IS_ENABLE(FEATURE_DEVICE_AUTO_RCK)) > + e_data = cal_data->count_r[s_index]; > + else > + e_data = (((unsigned long long) > + cal_data- > >count_rc_now[s_index]) * > + cal_data->count_r[s_index]) >> > 14; > + > + writel(e_data, LVTSEDATA00_0 + base + 0x4 * j); > + } > + } > +} > + > +static void init_controller_v4(struct lvts_data *lvts_data) > +{ > + struct device *dev = lvts_data->dev; > + unsigned int i; > + void __iomem *base; > + > + for (i = 0; i < lvts_data->num_tc; i++) { > + base = GET_BASE_ADDR(i); > + > + lvts_write_device(lvts_data, > SET_DEVICE_LOW_POWER_SINGLE_MODE_V4, i); > + > + writel(SET_SENSOR_INDEX, LVTSTSSEL_0 + base); > + writel(SET_CALC_SCALE_RULES, LVTSCALSCALE_0 + base); > + > + set_polling_speed(lvts_data, i); > + set_hw_filter(lvts_data, i); > + > + dev_info(dev, "lvts%d: read all %d sensors in %d us, > one in %d us\n", > + i, GET_TC_SENSOR_NUM(i), GROUP_LATENCY_US(i), > SENSOR_LATENCY_US(i)); > + } > +} > + > +/*================================================== > + * LVTS MT6873 > + *================================================== > + */ > + I think we should rename MT6873 to MT8192. MT8192 is a formal name for upstreaming our soc even though they are the same socs. Please rename all MT6873 to MT8192. Thanks. > +#define MT6873_NUM_LVTS (ARRAY_SIZE(mt6873_tc_settings)) > + > +enum mt6873_lvts_domain { > + MT6873_AP_DOMAIN, > + MT6873_MCU_DOMAIN, > + MT6873_NUM_DOMAIN > +}; > + > +enum mt6873_lvts_sensor_enum { > + MT6873_TS1_0, > + MT6873_TS1_1, > + MT6873_TS2_0, > + MT6873_TS2_1, > + MT6873_TS3_0, > + MT6873_TS3_1, > + MT6873_TS3_2, > + MT6873_TS3_3, > + MT6873_TS4_0, > + MT6873_TS4_1, > + MT6873_TS5_0, > + MT6873_TS5_1, > + MT6873_TS6_0, > + MT6873_TS6_1, > + MT6873_TS7_0, > + MT6873_TS7_1, > + MT6873_TS7_2, > + MT6873_NUM_TS > +}; > + > +static void mt6873_efuse_to_cal_data(struct lvts_data *lvts_data) > +{ > + struct sensor_cal_data *cal_data = &lvts_data->cal_data; > + > + cal_data->golden_temp = GET_CAL_DATA_BITMASK(0, 31, 24); > + cal_data->count_r[MT6873_TS1_0] = GET_CAL_DATA_BITMASK(1, 23, > 0); > + cal_data->count_r[MT6873_TS1_1] = GET_CAL_DATA_BITMASK(2, 23, > 0); > + cal_data->count_r[MT6873_TS2_0] = GET_CAL_DATA_BITMASK(3, 23, > 0); > + cal_data->count_r[MT6873_TS2_1] = GET_CAL_DATA_BITMASK(4, 23, > 0); > + cal_data->count_r[MT6873_TS3_0] = GET_CAL_DATA_BITMASK(5, 23, > 0); > + cal_data->count_r[MT6873_TS3_1] = GET_CAL_DATA_BITMASK(6, 23, > 0); > + cal_data->count_r[MT6873_TS3_2] = GET_CAL_DATA_BITMASK(7, 23, > 0); > + cal_data->count_r[MT6873_TS3_3] = GET_CAL_DATA_BITMASK(8, 23, > 0); > + cal_data->count_r[MT6873_TS4_0] = GET_CAL_DATA_BITMASK(9, 23, > 0); > + cal_data->count_r[MT6873_TS4_1] = GET_CAL_DATA_BITMASK(10, 23, > 0); > + cal_data->count_r[MT6873_TS5_0] = GET_CAL_DATA_BITMASK(11, 23, > 0); > + cal_data->count_r[MT6873_TS5_1] = GET_CAL_DATA_BITMASK(12, 23, > 0); > + cal_data->count_r[MT6873_TS6_0] = GET_CAL_DATA_BITMASK(13, 23, > 0); > + cal_data->count_r[MT6873_TS6_1] = GET_CAL_DATA_BITMASK(14, 23, > 0); > + cal_data->count_r[MT6873_TS7_0] = GET_CAL_DATA_BITMASK(15, 23, > 0); > + cal_data->count_r[MT6873_TS7_1] = GET_CAL_DATA_BITMASK(16, 23, > 0); > + cal_data->count_r[MT6873_TS7_2] = GET_CAL_DATA_BITMASK(17, 23, > 0); > + > + cal_data->count_rc[MT6873_TS1_0] = GET_CAL_DATA_BITMASK(21, 23, > 0); > + > + cal_data->count_rc[MT6873_TS2_0] = (GET_CAL_DATA_BITMASK(1, 31, > 24) << 16) + > + (GET_CAL_DATA_BITMASK(2, 31, > 24) << 8) + > + GET_CAL_DATA_BITMASK(3, 31, > 24); > + > + cal_data->count_rc[MT6873_TS3_0] = (GET_CAL_DATA_BITMASK(4, 31, > 24) << 16) + > + (GET_CAL_DATA_BITMASK(5, 31, > 24) << 8) + > + GET_CAL_DATA_BITMASK(6, 31, > 24); > + > + cal_data->count_rc[MT6873_TS4_0] = (GET_CAL_DATA_BITMASK(7, 31, > 24) << 16) + > + (GET_CAL_DATA_BITMASK(8, 31, > 24) << 8) + > + GET_CAL_DATA_BITMASK(9, 31, > 24); > + > + cal_data->count_rc[MT6873_TS5_0] = (GET_CAL_DATA_BITMASK(10, > 31, 24) << 16) + > + (GET_CAL_DATA_BITMASK(11, > 31, 24) << 8) + > + GET_CAL_DATA_BITMASK(12, > 31, 24); > + > + cal_data->count_rc[MT6873_TS6_0] = (GET_CAL_DATA_BITMASK(13, > 31, 24) << 16) + > + (GET_CAL_DATA_BITMASK(14, > 31, 24) << 8) + > + GET_CAL_DATA_BITMASK(15, > 31, 24); > + > + cal_data->count_rc[MT6873_TS7_0] = (GET_CAL_DATA_BITMASK(16, > 31, 24) << 16) + > + (GET_CAL_DATA_BITMASK(17, > 31, 24) << 8) + > + GET_CAL_DATA_BITMASK(18, > 31, 24); > +} > + > +static struct tc_settings mt6873_tc_settings[] = { > + [0] = { > + .domain_index = MT6873_MCU_DOMAIN, > + .addr_offset = 0x0, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS1_0, MT6873_TS1_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT1, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(3), > + }, > + [1] = { > + .domain_index = MT6873_MCU_DOMAIN, > + .addr_offset = 0x100, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS2_0, MT6873_TS2_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT0, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(4), > + }, > + [2] = { > + .domain_index = MT6873_MCU_DOMAIN, > + .addr_offset = 0x200, > + .num_sensor = 4, > + .sensor_map = {MT6873_TS3_0, MT6873_TS3_1, > MT6873_TS3_2, MT6873_TS3_3}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT0, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(5), > + }, > + [3] = { > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x0, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS4_0, MT6873_TS4_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT0, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(3), > + }, > + [4] = { > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x100, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS5_0, MT6873_TS5_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT1, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(4), > + }, > + [5] = { > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x200, > + .num_sensor = 2, > + .sensor_map = {MT6873_TS6_0, MT6873_TS6_1}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT1, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(5), > + }, > + [6] = { > + .domain_index = MT6873_AP_DOMAIN, > + .addr_offset = 0x300, > + .num_sensor = 3, > + .sensor_map = {MT6873_TS7_0, MT6873_TS7_1, > MT6873_TS7_2}, > + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), > + .hw_filter = LVTS_FILTER_2_OF_4, > + .dominator_sensing_point = SENSING_POINT2, > + .hw_reboot_trip_point = 117000, > + .irq_bit = BIT(6), > + } > +}; > + > +static struct lvts_data mt6873_lvts_data = { > + .num_domain = MT6873_NUM_DOMAIN, > + .num_tc = MT6873_NUM_LVTS, > + .tc = mt6873_tc_settings, > + .num_sensor = MT6873_NUM_TS, > + .ops = { > + .efuse_to_cal_data = mt6873_efuse_to_cal_data, > + .device_enable_and_init = device_enable_and_init_v4, > + .device_enable_auto_rck = device_enable_auto_rck_v4, > + .device_read_count_rc_n = device_read_count_rc_n_v4, > + .set_cal_data = set_calibration_data_v4, > + .init_controller = init_controller_v4, > + }, > + .feature_bitmap = FEATURE_DEVICE_AUTO_RCK, > + .num_efuse_addr = 22, > + .num_efuse_block = 1, > + .cal_data = { > + .default_golden_temp = 50, > + .default_count_r = 35000, > + .default_count_rc = 2750, > + }, > + .coeff = { > + .a = -250460, > + .b = 250460, > + }, > +}; > + > +/*================================================== > + *================================================== > + * Support chips > + *================================================== > + */ > +static const struct of_device_id lvts_of_match[] = { > + { > + .compatible = "mediatek,mt6873-lvts", > + .data = (void *)&mt6873_lvts_data, > + }, > + { > + }, > +}; > +MODULE_DEVICE_TABLE(of, lvts_of_match); > +/*==================================================*/ > +static struct platform_driver soc_temp_lvts = { > + .probe = lvts_probe, > + .remove = lvts_remove, > + .suspend = lvts_suspend, > + .resume = lvts_resume, > + .driver = { > + .name = "mtk-soc-temp-lvts", > + .of_match_table = lvts_of_match, > + }, > +}; > + > +module_platform_driver(soc_temp_lvts); > +MODULE_AUTHOR("Yu-Chia Chang <ethan.chang@mediatek.com>"); > +MODULE_AUTHOR("Michael Kao <michael.kao@mediatek.com>"); > +MODULE_DESCRIPTION("Mediatek soc temperature driver"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/thermal/mediatek/soc_temp_lvts.h > b/drivers/thermal/mediatek/soc_temp_lvts.h > new file mode 100644 > index 000000000000..77c64145aa17 > --- /dev/null > +++ b/drivers/thermal/mediatek/soc_temp_lvts.h > @@ -0,0 +1,312 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2020 MediaTek Inc. > + */ > + > +#ifndef __MTK_SOC_TEMP_LVTS_H__ > +#define __MTK_SOC_TEMP_LVTS_H__ > + > +/* LVTS HW filter settings > + * 000: Get one sample > + * 001: Get 2 samples and average them > + * 010: Get 4 samples, drop max and min, then average the rest of 2 > samples > + * 011: Get 6 samples, drop max and min, then average the rest of 4 > samples > + * 100: Get 10 samples, drop max and min, then average the rest of 8 > samples > + * 101: Get 18 samples, drop max and min, then average the rest of > 16 samples > + */ > +enum lvts_hw_filter { > + LVTS_FILTER_1, > + LVTS_FILTER_2, > + LVTS_FILTER_2_OF_4, > + LVTS_FILTER_4_OF_6, > + LVTS_FILTER_8_OF_10, > + LVTS_FILTER_16_OF_18 > +}; > + > +enum lvts_sensing_point { > + SENSING_POINT0, > + SENSING_POINT1, > + SENSING_POINT2, > + SENSING_POINT3, > + ALL_SENSING_POINTS > +}; > + > +/*================================================== > + * Data structure > + *================================================== > + */ > +struct lvts_data; > + > +struct speed_settings { > + unsigned int period_unit; > + unsigned int group_interval_delay; > + unsigned int filter_interval_delay; > + unsigned int sensor_interval_delay; > +}; > + > +struct tc_settings { > + unsigned int domain_index; > + unsigned int addr_offset; > + unsigned int num_sensor; > + unsigned int sensor_map[ALL_SENSING_POINTS]; /* In sensor ID */ > + struct speed_settings tc_speed; > + /* HW filter setting > + * 000: Get one sample > + * 001: Get 2 samples and average them > + * 010: Get 4 samples, drop max and min, then average the rest > of 2 samples > + * 011: Get 6 samples, drop max and min, then average the rest > of 4 samples > + * 100: Get 10 samples, drop max and min, then average the rest > of 8 samples > + * 101: Get 18 samples, drop max and min, then average the rest > of 16 samples > + */ > + unsigned int hw_filter; > + /* Dominator_sensing point is used to select a sensing point > + * and reference its temperature to trigger Thermal HW Reboot > + * When it is ALL_SENSING_POINTS, it will select all sensing > points > + */ > + int dominator_sensing_point; > + int hw_reboot_trip_point; /* -274000: Disable HW reboot */ > + unsigned int irq_bit; > +}; > + > +struct formula_coeff { > + int a; > + int b; > + unsigned int golden_temp; > +}; > + > +struct sensor_cal_data { > + int use_fake_efuse; /* 1: Use fake efuse, 0: Use real > efuse */ > + unsigned int golden_temp; > + unsigned int *count_r; > + unsigned int *count_rc; > + unsigned int *count_rc_now; > + > + unsigned int default_golden_temp; > + unsigned int default_count_r; > + unsigned int default_count_rc; > +}; > + > +struct platform_ops { > + void (*efuse_to_cal_data)(struct lvts_data *lvts_data); > + void (*device_enable_and_init)(struct lvts_data *lvts_data); > + void (*device_enable_auto_rck)(struct lvts_data *lvts_data); > + int (*device_read_count_rc_n)(struct lvts_data *lvts_data); > + void (*set_cal_data)(struct lvts_data *lvts_data); > + void (*init_controller)(struct lvts_data *lvts_data); > +}; > + > +struct power_domain { > + void __iomem *base; /* LVTS base addresses */ > + unsigned int irq_num; /* LVTS interrupt numbers */ > + struct reset_control *reset; > +}; > + > +struct sensor_data { > + void __iomem *base; /* Sensor base address */ > + int offset; /* Sensor offset */ > +}; > + > +struct lvts_data { > + struct device *dev; > + struct clk *clk; > + unsigned int num_domain; > + struct power_domain *domain; > + > + int num_tc; /* Number of LVTS thermal > controllers */ > + struct tc_settings *tc; > + int counting_window_us; /* LVTS device counting > window */ > + > + int num_sensor; /* Number of sensors in this > platform */ > + void __iomem **reg; > + > + struct platform_ops ops; > + int feature_bitmap; /* Show what features are > enabled */ > + > + unsigned int num_efuse_addr; > + unsigned int *efuse; > + unsigned int num_efuse_block; /* Number of contiguous efuse > indexes */ > + struct sensor_cal_data cal_data; > + struct formula_coeff coeff; > +}; > + > +struct soc_temp_tz { > + unsigned int id; /* if id is 0, get max temperature of all > sensors */ > + struct lvts_data *lvts_data; > +}; > + > +struct match_entry { > + char chip[32]; > + struct lvts_data *lvts_data; > +}; > + > +struct lvts_match_data { > + unsigned int hw_version; > + struct match_entry *table; > + void (*set_up_common_callbacks)(struct lvts_data *lvts_data); > + struct list_head node; > +}; > + > +struct lvts_id { > + unsigned int hw_version; > + char chip[32]; > +}; > + > +/*================================================== > + * LVTS device register > + *================================================== > + */ > +#define RG_TSFM_DATA_0 0x00 > +#define RG_TSFM_DATA_1 0x01 > +#define RG_TSFM_DATA_2 0x02 > +#define RG_TSFM_CTRL_0 0x03 > +#define RG_TSFM_CTRL_1 0x04 > +#define RG_TSFM_CTRL_2 0x05 > +#define RG_TSFM_CTRL_3 0x06 > +#define RG_TSFM_CTRL_4 0x07 > +#define RG_TSV2F_CTRL_0 0x08 > +#define RG_TSV2F_CTRL_1 0x09 > +#define RG_TSV2F_CTRL_2 0x0A > +#define RG_TSV2F_CTRL_3 0x0B > +#define RG_TSV2F_CTRL_4 0x0C > +#define RG_TSV2F_CTRL_5 0x0D > +#define RG_TSV2F_CTRL_6 0x0E > +#define RG_TEMP_DATA_0 0x10 > +#define RG_TEMP_DATA_1 0x11 > +#define RG_TEMP_DATA_2 0x12 > +#define RG_TEMP_DATA_3 0x13 > +#define RG_RC_DATA_0 0x14 > +#define RG_RC_DATA_1 0x15 > +#define RG_RC_DATA_2 0x16 > +#define RG_RC_DATA_3 0x17 > +#define RG_DIV_DATA_0 0x18 > +#define RG_DIV_DATA_1 0x19 > +#define RG_DIV_DATA_2 0x1A > +#define RG_DIV_DATA_3 0x1B > +#define RG_TST_DATA_0 0x70 > +#define RG_TST_DATA_1 0x71 > +#define RG_TST_DATA_2 0x72 > +#define RG_TST_CTRL 0x73 > +#define RG_DBG_FQMTR 0xF0 > +#define RG_DBG_LPSEQ 0xF1 > +#define RG_DBG_STATE 0xF2 > +#define RG_DBG_CHKSUM 0xF3 > +#define RG_DID_LVTS 0xFC > +#define RG_DID_REV 0xFD > +#define RG_TSFM_RST 0xFF > +/*================================================== > + * LVTS controller register > + *================================================== > + */ > +#define LVTSMONCTL0_0 0x000 > +#define LVTS_SINGLE_SENSE BIT(9) > +#define ENABLE_SENSING_POINT(num) (LVTS_SINGLE_SENSE | > GENMASK(((num) - 1), 0)) > +#define DISABLE_SENSING_POINT (LVTS_SINGLE_SENSE | 0x0) > +#define LVTSMONCTL1_0 0x004 > +#define LVTSMONCTL2_0 0x008 > +#define LVTSMONINT_0 0x00C > +#define STAGE3_INT_EN BIT(31) > +#define LVTSMONINTSTS_0 0x010 > +#define LVTSMONIDET0_0 0x014 > +#define LVTSMONIDET1_0 0x018 > +#define LVTSMONIDET2_0 0x01C > +#define LVTSMONIDET3_0 0x020 > +#define LVTSH2NTHRE_0 0x024 > +#define LVTSHTHRE_0 0x028 > +#define LVTSCTHRE_0 0x02C > +#define LVTSOFFSETH_0 0x030 > +#define LVTSOFFSETL_0 0x034 > +#define LVTSMSRCTL0_0 0x038 > +#define LVTSMSRCTL1_0 0x03C > +#define LVTSTSSEL_0 0x040 > +#define SET_SENSOR_INDEX 0x13121110 > +#define LVTSDEVICETO_0 0x044 > +#define LVTSCALSCALE_0 0x048 > +#define SET_CALC_SCALE_RULES 0x00000300 > +#define LVTS_ID_0 0x04C > +#define LVTS_CONFIG_0 0x050 > + > +#define BROADCAST_ID_UPDATE BIT(26) > +#define DEVICE_SENSING_STATUS BIT(25) > +#define DEVICE_ACCESS_STARTUS BIT(24) > +#define WRITE_ACCESS BIT(16) > +#define DEVICE_WRITE (BIT(31) | CK26M_ACTIVE | > DEVICE_ACCESS_STARTUS \ > + | BIT(17) | WRITE_ACCESS) > +#define DEVICE_READ (BIT(31) | CK26M_ACTIVE | > DEVICE_ACCESS_STARTUS \ > + | 1 << 17) > +#define RESET_ALL_DEVICES (DEVICE_WRITE | RG_TSFM_RST << 8 | > 0xFF) > +#define READ_BACK_DEVICE_ID (BIT(31) | CK26M_ACTIVE | > BROADCAST_ID_UPDATE \ > + | DEVICE_ACCESS_STARTUS | BIT(17) \ > + | RG_DID_LVTS << 8) > +#define READ_DEVICE_REG(reg_idx) (DEVICE_READ | (reg_idx) << 8 | > 0x00) > +#define LVTSEDATA00_0 0x054 > +#define LVTSEDATA01_0 0x058 > +#define LVTSEDATA02_0 0x05C > +#define LVTSEDATA03_0 0x060 > +#define LVTSMSR0_0 0x090 > +#define MRS_RAW_MASK GENMASK(15, 0) > +#define MRS_RAW_VALID_BIT BIT(16) > +#define LVTSMSR1_0 0x094 > +#define LVTSMSR2_0 0x098 > +#define LVTSMSR3_0 0x09C > +#define LVTSIMMD0_0 0x0A0 > +#define LVTSIMMD1_0 0x0A4 > +#define LVTSIMMD2_0 0x0A8 > +#define LVTSIMMD3_0 0x0AC > +#define LVTSRDATA0_0 0x0B0 > +#define LVTSRDATA1_0 0x0B4 > +#define LVTSRDATA2_0 0x0B8 > +#define LVTSRDATA3_0 0x0BC > +#define LVTSPROTCTL_0 0x0C0 > +#define PROTOFFSET GENMASK(15, 0) > +#define LVTSPROTTA_0 0x0C4 > +#define LVTSPROTTB_0 0x0C8 > +#define LVTSPROTTC_0 0x0CC > +#define LVTSCLKEN_0 0x0E4 > +#define ENABLE_LVTS_CTRL_CLK (1) > +#define DISABLE_LVTS_CTRL_CLK (0) > +#define LVTSDBGSEL_0 0x0E8 > +#define LVTSDBGSIG_0 0x0EC > +#define LVTSSPARE0_0 0x0F0 > +#define LVTSSPARE1_0 0x0F4 > +#define LVTSSPARE2_0 0x0F8 > +#define LVTSSPARE3_0 0x0FC > + > +#define THERMINTST 0xF04 > +/*================================================== > + * LVTS register mask > + *================================================== > + */ > +#define THERMAL_COLD_INTERRUPT_0 0x00000001 > +#define THERMAL_HOT_INTERRUPT_0 0x00000002 > +#define THERMAL_LOW_OFFSET_INTERRUPT_0 0x00000004 > +#define THERMAL_HIGH_OFFSET_INTERRUPT_0 0x00000008 > +#define THERMAL_HOT2NORMAL_INTERRUPT_0 0x00000010 > +#define THERMAL_COLD_INTERRUPT_1 0x00000020 > +#define THERMAL_HOT_INTERRUPT_1 0x00000040 > +#define THERMAL_LOW_OFFSET_INTERRUPT_1 0x00000080 > +#define THERMAL_HIGH_OFFSET_INTERRUPT_1 0x00000100 > +#define THERMAL_HOT2NORMAL_INTERRUPT_1 0x00000200 > +#define THERMAL_COLD_INTERRUPT_2 0x00000400 > +#define THERMAL_HOT_INTERRUPT_2 0x00000800 > +#define THERMAL_LOW_OFFSET_INTERRUPT_2 0x00001000 > +#define THERMAL_HIGH_OFFSET_INTERRUPT_2 0x00002000 > +#define THERMAL_HOT2NORMAL_INTERRUPT_2 0x00004000 > +#define THERMAL_AHB_TIMEOUT_INTERRUPT 0x00008000 > +#define THERMAL_DEVICE_TIMEOUT_INTERRUPT 0x00008000 > +#define THERMAL_IMMEDIATE_INTERRUPT_0 0x00010000 > +#define THERMAL_IMMEDIATE_INTERRUPT_1 0x00020000 > +#define THERMAL_IMMEDIATE_INTERRUPT_2 0x00040000 > +#define THERMAL_FILTER_INTERRUPT_0 0x00080000 > +#define THERMAL_FILTER_INTERRUPT_1 0x00100000 > +#define THERMAL_FILTER_INTERRUPT_2 0x00200000 > +#define THERMAL_COLD_INTERRUPT_3 0x00400000 > +#define THERMAL_HOT_INTERRUPT_3 0x00800000 > +#define THERMAL_LOW_OFFSET_INTERRUPT_3 0x01000000 > +#define THERMAL_HIGH_OFFSET_INTERRUPT_3 0x02000000 > +#define THERMAL_HOT2NORMAL_INTERRUPT_3 0x04000000 > +#define THERMAL_IMMEDIATE_INTERRUPT_3 0x08000000 > +#define THERMAL_FILTER_INTERRUPT_3 0x10000000 > +#define THERMAL_PROTECTION_STAGE_1 0x20000000 > +#define THERMAL_PROTECTION_STAGE_2 0x40000000 > +#define THERMAL_PROTECTION_STAGE_3 0x80000000 > +#endif /* __MTK_SOC_TEMP_LVTS_H__ */
diff --git a/drivers/thermal/mediatek/Kconfig b/drivers/thermal/mediatek/Kconfig index 0351e73170b7..d716d0372e1e 100644 --- a/drivers/thermal/mediatek/Kconfig +++ b/drivers/thermal/mediatek/Kconfig @@ -20,4 +20,14 @@ config MTK_SOC_THERMAL configures thermal controllers to collect temperature via AUXADC interface. +config MTK_SOC_THERMAL_LVTS + tristate "LVTS (Low voltage thermal sensor) driver for Mediatek SoCs" + depends on HAS_IOMEM + depends on NVMEM + depends on RESET_TI_SYSCON + help + Enable this option if you want to get SoC temperature + information for Mediatek platforms. This driver + configures LVTS thermal controllers to collect temperatures + via Analog Serial Interface(ASIF). endif diff --git a/drivers/thermal/mediatek/Makefile b/drivers/thermal/mediatek/Makefile index f75313ddce5e..16ce166e5916 100644 --- a/drivers/thermal/mediatek/Makefile +++ b/drivers/thermal/mediatek/Makefile @@ -1 +1,2 @@ obj-$(CONFIG_MTK_SOC_THERMAL) += soc_temp.o +obj-$(CONFIG_MTK_SOC_THERMAL_LVTS) += soc_temp_lvts.o diff --git a/drivers/thermal/mediatek/soc_temp.c b/drivers/thermal/mediatek/soc_temp.c index 79d592f3f60d..4ed78bbadd62 100644 --- a/drivers/thermal/mediatek/soc_temp.c +++ b/drivers/thermal/mediatek/soc_temp.c @@ -23,7 +23,7 @@ #include <linux/reset.h> #include <linux/types.h> -#include "thermal_hwmon.h" +#include "../thermal_hwmon.h" /* AUXADC Registers */ #define AUXADC_CON1_SET_V 0x008 diff --git a/drivers/thermal/mediatek/soc_temp_lvts.c b/drivers/thermal/mediatek/soc_temp_lvts.c new file mode 100644 index 000000000000..145ddd5fe409 --- /dev/null +++ b/drivers/thermal/mediatek/soc_temp_lvts.c @@ -0,0 +1,1280 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020 MediaTek Inc. + */ + +#include <linux/bits.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/iopoll.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/of_irq.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/thermal.h> +#include "soc_temp_lvts.h" + +/*================================================== + * Definition or macro function + *================================================== + */ +#define STOP_COUNTING_V4 (DEVICE_WRITE | RG_TSFM_CTRL_0 << 8 | 0x00) +#define SET_RG_TSFM_LPDLY_V4 (DEVICE_WRITE | RG_TSFM_CTRL_4 << 8 | 0xA6) +#define SET_COUNTING_WINDOW_20US1_V4 (DEVICE_WRITE | RG_TSFM_CTRL_2 << 8 | 0x00) +#define SET_COUNTING_WINDOW_20US2_V4 (DEVICE_WRITE | RG_TSFM_CTRL_1 << 8 | 0x20) +#define TSV2F_CHOP_CKSEL_AND_TSV2F_EN_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_2 << 8 | 0x84) +#define TSBG_DEM_CKSEL_X_TSBG_CHOP_EN_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_4 << 8 | 0x7C) +#define SET_TS_RSV_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_1 << 8 | 0x8D) +#define SET_TS_EN_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 << 8 | 0xF4) +#define TOGGLE_RG_TSV2F_VCO_RST1_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 << 8 | 0xFC) +#define TOGGLE_RG_TSV2F_VCO_RST2_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_0 << 8 | 0xF4) + +#define SET_LVTS_AUTO_RCK_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_6 << 8 | 0x01) +#define SELECT_SENSOR_RCK_V4(id) (DEVICE_WRITE | RG_TSV2F_CTRL_5 << 8 | (id)) +#define SET_DEVICE_SINGLE_MODE_V4 (DEVICE_WRITE | RG_TSFM_CTRL_3 << 8 | 0x78) +#define KICK_OFF_RCK_COUNTING_V4 (DEVICE_WRITE | RG_TSFM_CTRL_0 << 8 | 0x02) +#define SET_SENSOR_NO_RCK_V4 (DEVICE_WRITE | RG_TSV2F_CTRL_5 << 8 | 0x10) +#define SET_DEVICE_LOW_POWER_SINGLE_MODE_V4 (DEVICE_WRITE | RG_TSFM_CTRL_3 << 8 | 0xB8) + +#define ENABLE_FEATURE(feature) (lvts_data->feature_bitmap |= (feature)) +#define DISABLE_FEATURE(feature) (lvts_data->feature_bitmap &= (~(feature))) +#define IS_ENABLE(feature) (lvts_data->feature_bitmap & (feature)) + +#define DISABLE_THERMAL_HW_REBOOT (-274000) + +#define CLOCK_26MHZ_CYCLE_NS (38) +#define BUS_ACCESS_US (2) + +#define FEATURE_DEVICE_AUTO_RCK (BIT(0)) +#define FEATURE_CK26M_ACTIVE (BIT(1)) +#define CK26M_ACTIVE (((lvts_data->feature_bitmap & FEATURE_CK26M_ACTIVE) \ + ? 1 : 0) << 30) +#define GET_BASE_ADDR(tc_id) \ + (lvts_data->domain[lvts_data->tc[tc_id].domain_index].base \ + + lvts_data->tc[tc_id].addr_offset) + +#define SET_TC_SPEED_IN_US(pu, gd, fd, sd) \ + { \ + .period_unit = (((pu) * 1000) / (256 * CLOCK_26MHZ_CYCLE_NS)), \ + .group_interval_delay = ((gd) / (pu)), \ + .filter_interval_delay = ((fd) / (pu)), \ + .sensor_interval_delay = ((sd) / (pu)), \ + } + +#define GET_CAL_DATA_BITMASK(index, h, l) \ + (((index) < lvts_data->num_efuse_addr) \ + ? ((lvts_data->efuse[(index)] & GENMASK(h, l)) >> l) \ + : 0) + +#define GET_CAL_DATA_BIT(index, bit) \ + (((index) < lvts_data->num_efuse_addr) \ + ? ((lvts_data->efuse[index] & BIT(bit)) >> (bit)) \ + : 0) + +#define GET_TC_SENSOR_NUM(tc_id) \ + (lvts_data->tc[tc_id].num_sensor) + +#define ONE_SAMPLE (lvts_data->counting_window_us + 2 * BUS_ACCESS_US) + +#define NUM_OF_SAMPLE(tc_id) \ + ((lvts_data->tc[tc_id].hw_filter < LVTS_FILTER_2) ? 1 : \ + ((lvts_data->tc[tc_id].hw_filter > LVTS_FILTER_16_OF_18) ? 1 : \ + ((lvts_data->tc[tc_id].hw_filter == LVTS_FILTER_16_OF_18) ? 18 :\ + ((lvts_data->tc[tc_id].hw_filter == LVTS_FILTER_8_OF_10) ? 10 : \ + (lvts_data->tc[tc_id].hw_filter * 2))))) + +#define PERIOD_UNIT_US(tc_id) \ + ((lvts_data->tc[tc_id].tc_speed.period_unit * 256 * \ + CLOCK_26MHZ_CYCLE_NS) / 1000) +#define FILTER_INT_US(tc_id) \ + (lvts_data->tc[tc_id].tc_speed.filter_interval_delay \ + * PERIOD_UNIT_US(tc_id)) +#define SENSOR_INT_US(tc_id) \ + (lvts_data->tc[tc_id].tc_speed.sensor_interval_delay \ + * PERIOD_UNIT_US(tc_id)) +#define GROUP_INT_US(tc_id) \ + (lvts_data->tc[tc_id].tc_speed.group_interval_delay \ + * PERIOD_UNIT_US(tc_id)) + +#define SENSOR_LATENCY_US(tc_id) \ + ((NUM_OF_SAMPLE(tc_id) - 1) * FILTER_INT_US(tc_id) \ + + NUM_OF_SAMPLE(tc_id) * ONE_SAMPLE) + +#define GROUP_LATENCY_US(tc_id) \ + (GET_TC_SENSOR_NUM(tc_id) * SENSOR_LATENCY_US(tc_id) \ + + (GET_TC_SENSOR_NUM(tc_id) - 1) * SENSOR_INT_US(tc_id) \ + + GROUP_INT_US(tc_id)) + +/*================================================== + * LVTS local common code + *================================================== + */ +static int lvts_raw_to_temp(struct formula_coeff *co, unsigned int msr_raw) +{ + /* This function returns degree mC */ + + int temp; + + temp = (co->a * ((unsigned long long)msr_raw)) >> 14; + temp = temp + co->golden_temp * 500 + co->b; + + return temp; +} + +static unsigned int lvts_temp_to_raw(struct formula_coeff *co, int temp) +{ + unsigned int msr_raw; + + msr_raw = div_s64((s64)((co->golden_temp * 500 + co->b - temp)) << 14, + (-1 * co->a)); + + return msr_raw; +} + +static int soc_temp_lvts_read_temp(void *data, int *temperature) +{ + struct soc_temp_tz *lvts_tz = (struct soc_temp_tz *)data; + struct lvts_data *lvts_data = lvts_tz->lvts_data; + unsigned int msr_raw; + + msr_raw = readl(lvts_data->reg[lvts_tz->id]) & MRS_RAW_MASK; + if (msr_raw == 0) + return -EINVAL; + + *temperature = lvts_raw_to_temp(&lvts_data->coeff, msr_raw); + + return 0; +} + +static const struct thermal_zone_of_device_ops soc_temp_lvts_ops = { + .get_temp = soc_temp_lvts_read_temp, +}; + +static void lvts_write_device(struct lvts_data *lvts_data, unsigned int data, + int tc_id) +{ + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + + writel(data, LVTS_CONFIG_0 + base); + + usleep_range(5, 15); +} + +static unsigned int lvts_read_device(struct lvts_data *lvts_data, + unsigned int reg_idx, int tc_id) +{ + struct device *dev = lvts_data->dev; + void __iomem *base; + unsigned int data; + int ret; + + base = GET_BASE_ADDR(tc_id); + writel(READ_DEVICE_REG(reg_idx), LVTS_CONFIG_0 + base); + + ret = readl_poll_timeout(LVTS_CONFIG_0 + base, data, + !(data & DEVICE_ACCESS_STARTUS), + 2, 200); + if (ret) + dev_err(dev, + "Error: LVTS %d DEVICE_ACCESS_START didn't ready\n", tc_id); + + data = readl(LVTSRDATA0_0 + base); + + return data; +} + +static void wait_all_tc_sensing_point_idle(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + unsigned int mask, error_code, is_error; + void __iomem *base; + int i, cnt, ret; + + mask = BIT(10) | BIT(7) | BIT(0); + + for (cnt = 0; cnt < 2; cnt++) { + is_error = 0; + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + ret = readl_poll_timeout(LVTSMSRCTL1_0 + base, error_code, + !(error_code & mask), 2, 200); + /* + * Error code + * 000: IDLE + * 001: Write transaction + * 010: Waiting for read after Write + * 011: Disable Continue fetching on Device + * 100: Read transaction + * 101: Set Device special Register for Voltage threshold + * 111: Set TSMCU number for Fetch + */ + error_code = ((error_code & BIT(10)) >> 8) + + ((error_code & BIT(7)) >> 6) + + (error_code & BIT(0)); + + if (ret) + dev_err(dev, + "Error LVTS %d sensing points aren't idle, error_code %d\n", + i, error_code); + + if (error_code != 0) + is_error = 1; + } + + if (is_error == 0) + break; + } +} + +static void lvts_reset(struct lvts_data *lvts_data) +{ + int i; + + for (i = 0; i < lvts_data->num_domain; i++) { + if (lvts_data->domain[i].reset) + reset_control_assert(lvts_data->domain[i].reset); + + if (lvts_data->domain[i].reset) + reset_control_deassert(lvts_data->domain[i].reset); + } +} + +static void device_identification(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + unsigned int i, data; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + + writel(ENABLE_LVTS_CTRL_CLK, LVTSCLKEN_0 + base); + + lvts_write_device(lvts_data, RESET_ALL_DEVICES, i); + + lvts_write_device(lvts_data, READ_BACK_DEVICE_ID, i); + + /* Check LVTS device ID */ + data = (readl(LVTS_ID_0 + base) & GENMASK(7, 0)); + if (data != (0x81 + i)) + dev_err(dev, "LVTS_TC_%d, Device ID should be 0x%x, but 0x%x\n", + i, (0x81 + i), data); + } +} + +static void disable_all_sensing_points(struct lvts_data *lvts_data) +{ + unsigned int i; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + writel(DISABLE_SENSING_POINT, LVTSMONCTL0_0 + base); + } +} + +static void enable_all_sensing_points(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + unsigned int i, num; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + num = tc[i].num_sensor; + + if (num > ALL_SENSING_POINTS) { + dev_err(dev, + "%s, LVTS%d, illegal number of sensors: %d\n", + __func__, i, tc[i].num_sensor); + continue; + } + + writel(ENABLE_SENSING_POINT(num), LVTSMONCTL0_0 + base); + } +} + +static void set_polling_speed(struct lvts_data *lvts_data, int tc_id) +{ + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + unsigned int lvts_mon_ctl_1, lvts_mon_ctl_2; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + + lvts_mon_ctl_1 = ((tc[tc_id].tc_speed.group_interval_delay << 20) & GENMASK(29, 20)) | + (tc[tc_id].tc_speed.period_unit & GENMASK(9, 0)); + lvts_mon_ctl_2 = ((tc[tc_id].tc_speed.filter_interval_delay << 16) & GENMASK(25, 16)) | + (tc[tc_id].tc_speed.sensor_interval_delay & GENMASK(9, 0)); + /* + * Clock source of LVTS thermal controller is 26MHz. + * Period unit is a base for all interval delays + * All interval delays must multiply it to convert a setting to time. + * Filter interval delay is a delay between two samples of the same sensor + * Sensor interval delay is a delay between two samples of differnet sensors + * Group interval delay is a delay between different rounds. + * For example: + * If Period unit = C, filter delay = 1, sensor delay = 2, group delay = 1, + * and two sensors, TS1 and TS2, are in a LVTS thermal controller + * and then + * Period unit = C * 1/26M * 256 = 12 * 38.46ns * 256 = 118.149us + * Filter interval delay = 1 * Period unit = 118.149us + * Sensor interval delay = 2 * Period unit = 236.298us + * Group interval delay = 1 * Period unit = 118.149us + * + * TS1 TS1 ... TS1 TS2 TS2 ... TS2 TS1... + * <--> Filter interval delay + * <--> Sensor interval delay + * <--> Group interval delay + */ + writel(lvts_mon_ctl_1, LVTSMONCTL1_0 + base); + writel(lvts_mon_ctl_2, LVTSMONCTL2_0 + base); + + dev_info(dev, "%s %d, LVTSMONCTL1_0= 0x%x,LVTSMONCTL2_0= 0x%x\n", + __func__, tc_id, readl(LVTSMONCTL1_0 + base), + readl(LVTSMONCTL2_0 + base)); +} + +static void set_hw_filter(struct lvts_data *lvts_data, int tc_id) +{ + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + unsigned int option; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + option = tc[tc_id].hw_filter & 0x7; + /* hw filter + * 000: Get one sample + * 001: Get 2 samples and average them + * 010: Get 4 samples, drop max and min, then average the rest of 2 samples + * 011: Get 6 samples, drop max and min, then average the rest of 4 samples + * 100: Get 10 samples, drop max and min, then average the rest of 8 samples + * 101: Get 18 samples, drop max and min, then average the rest of 16 samples + */ + option = (option << 9) | (option << 6) | (option << 3) | option; + + writel(option, LVTSMSRCTL0_0 + base); + dev_info(dev, "%s %d, LVTSMSRCTL0_0= 0x%x\n", + __func__, tc_id, readl(LVTSMSRCTL0_0 + base)); +} + +static int get_dominator_index(struct lvts_data *lvts_data, int tc_id) +{ + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + int d_index; + + if (tc[tc_id].dominator_sensing_point == ALL_SENSING_POINTS) { + d_index = ALL_SENSING_POINTS; + } else if (tc[tc_id].dominator_sensing_point < + tc[tc_id].num_sensor){ + d_index = tc[tc_id].dominator_sensing_point; + } else { + dev_err(dev, + "Error: LVTS%d, dominator_sensing_point= %d should smaller than num_sensor= %d\n", + tc_id, tc[tc_id].dominator_sensing_point, + tc[tc_id].num_sensor); + + dev_err(dev, "Use the sensing point 0 as the dominated sensor\n"); + d_index = SENSING_POINT0; + } + + return d_index; +} + +static void disable_hw_reboot_interrupt(struct lvts_data *lvts_data, int tc_id) +{ + unsigned int temp; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + + /* LVTS thermal controller has two interrupts for thermal HW reboot + * One is for AP SW and the other is for RGU + * The interrupt of AP SW can turn off by a bit of a register, but + * the other for RGU cannot. + * To prevent rebooting device accidentally, we are going to add + * a huge offset to LVTS and make LVTS always report extremely low + * temperature. + */ + + /* After adding the huge offset 0x3FFF, LVTS alawys adds the + * offset to MSR_RAW. + * When MSR_RAW is larger, SW will convert lower temperature/ + */ + temp = readl(LVTSPROTCTL_0 + base); + writel(temp | 0x3FFF, LVTSPROTCTL_0 + base); + + /* Disable the interrupt of AP SW */ + temp = readl(LVTSMONINT_0 + base); + writel(temp & ~(STAGE3_INT_EN), LVTSMONINT_0 + base); +} + +static void enable_hw_reboot_interrupt(struct lvts_data *lvts_data, int tc_id) +{ + unsigned int temp; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + + /* Enable the interrupt of AP SW */ + temp = readl(LVTSMONINT_0 + base); + writel(temp | STAGE3_INT_EN, LVTSMONINT_0 + base); + /* Clear the offset */ + temp = readl(LVTSPROTCTL_0 + base); + writel(temp & ~PROTOFFSET, LVTSPROTCTL_0 + base); +} + +static void set_tc_hw_reboot_threshold(struct lvts_data *lvts_data, + int trip_point, int tc_id) +{ + struct device *dev = lvts_data->dev; + unsigned int msr_raw, temp, config, d_index; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + d_index = get_dominator_index(lvts_data, tc_id); + + dev_info(dev, "%s: LVTS%d, the dominator sensing point= %d\n", + __func__, tc_id, d_index); + + disable_hw_reboot_interrupt(lvts_data, tc_id); + + temp = readl(LVTSPROTCTL_0 + base); + if (d_index == ALL_SENSING_POINTS) { + /* Maximum of 4 sensing points */ + config = (0x1 << 16); + writel(config | temp, LVTSPROTCTL_0 + base); + } else { + /* Select protection sensor */ + config = ((d_index << 2) + 0x2) << 16; + writel(config | temp, LVTSPROTCTL_0 + base); + } + + msr_raw = lvts_temp_to_raw(&lvts_data->coeff, trip_point); + writel(msr_raw, LVTSPROTTC_0 + base); + + enable_hw_reboot_interrupt(lvts_data, tc_id); +} + +static void set_all_tc_hw_reboot(struct lvts_data *lvts_data) +{ + struct tc_settings *tc = lvts_data->tc; + int i, trip_point; + + for (i = 0; i < lvts_data->num_tc; i++) { + trip_point = tc[i].hw_reboot_trip_point; + + if (tc[i].num_sensor == 0) + continue; + + if (trip_point == DISABLE_THERMAL_HW_REBOOT) + continue; + + set_tc_hw_reboot_threshold(lvts_data, trip_point, i); + } +} + +static int lvts_init(struct lvts_data *lvts_data) +{ + struct platform_ops *ops = &lvts_data->ops; + struct device *dev = lvts_data->dev; + int ret; + + ret = clk_prepare_enable(lvts_data->clk); + if (ret) { + dev_err(dev, + "Error: Failed to enable lvts controller clock: %d\n", + ret); + return ret; + } + + lvts_reset(lvts_data); + + device_identification(lvts_data); + if (ops->device_enable_and_init) + ops->device_enable_and_init(lvts_data); + + if (IS_ENABLE(FEATURE_DEVICE_AUTO_RCK)) { + if (ops->device_enable_auto_rck) + ops->device_enable_auto_rck(lvts_data); + } else { + if (ops->device_read_count_rc_n) + ops->device_read_count_rc_n(lvts_data); + } + + if (ops->set_cal_data) + ops->set_cal_data(lvts_data); + + disable_all_sensing_points(lvts_data); + wait_all_tc_sensing_point_idle(lvts_data); + if (ops->init_controller) + ops->init_controller(lvts_data); + enable_all_sensing_points(lvts_data); + + set_all_tc_hw_reboot(lvts_data); + + return 0; +} + +static int prepare_calibration_data(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + struct sensor_cal_data *cal_data = &lvts_data->cal_data; + struct platform_ops *ops = &lvts_data->ops; + int i, offset, size; + char buffer[512]; + + cal_data->count_r = devm_kcalloc(dev, lvts_data->num_sensor, + sizeof(*cal_data->count_r), GFP_KERNEL); + if (!cal_data->count_r) + return -ENOMEM; + + cal_data->count_rc = devm_kcalloc(dev, lvts_data->num_sensor, + sizeof(*cal_data->count_rc), GFP_KERNEL); + if (!cal_data->count_rc) + return -ENOMEM; + + if (ops->efuse_to_cal_data) + ops->efuse_to_cal_data(lvts_data); + + cal_data->use_fake_efuse = 1; + if (cal_data->golden_temp != 0) { + cal_data->use_fake_efuse = 0; + } else { + for (i = 0; i < lvts_data->num_sensor; i++) { + if (cal_data->count_r[i] != 0 || + cal_data->count_rc[i] != 0) { + cal_data->use_fake_efuse = 0; + break; + } + } + } + + if (cal_data->use_fake_efuse) { + /* It means all efuse data are equal to 0 */ + dev_err(dev, + "[lvts_cal] This sample is not calibrated, fake !!\n"); + + cal_data->golden_temp = cal_data->default_golden_temp; + for (i = 0; i < lvts_data->num_sensor; i++) { + cal_data->count_r[i] = cal_data->default_count_r; + cal_data->count_rc[i] = cal_data->default_count_rc; + } + } + + lvts_data->coeff.golden_temp = cal_data->golden_temp; + + dev_info(dev, "[lvts_cal] golden_temp = %d\n", cal_data->golden_temp); + + size = sizeof(buffer); + offset = snprintf(buffer, size, "[lvts_cal] num:g_count:g_count_rc "); + for (i = 0; i < lvts_data->num_sensor; i++) + offset += snprintf(buffer + offset, size - offset, "%d:%d:%d ", + i, cal_data->count_r[i], cal_data->count_rc[i]); + + buffer[offset] = '\0'; + dev_info(dev, "%s\n", buffer); + + return 0; +} + +static int get_calibration_data(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + char cell_name[8]; + struct nvmem_cell *cell; + u32 *buf; + size_t len; + int i, j, index = 0, ret; + + lvts_data->efuse = devm_kcalloc(dev, lvts_data->num_efuse_addr, + sizeof(*lvts_data->efuse), GFP_KERNEL); + if (!lvts_data->efuse) + return -ENOMEM; + + for (i = 0; i < lvts_data->num_efuse_block; i++) { + snprintf(cell_name, sizeof(cell_name), "e_data%d", i + 1); + cell = nvmem_cell_get(dev, cell_name); + if (IS_ERR(cell)) { + dev_err(dev, "Error: Failed to get nvmem cell %s\n", cell_name); + return PTR_ERR(cell); + } + + buf = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + if (IS_ERR(buf)) + return PTR_ERR(buf); + + for (j = 0; j < (len / sizeof(u32)); j++) { + if (index >= lvts_data->num_efuse_addr) { + dev_err(dev, "Array efuse is going to overflow"); + kfree(buf); + return -EINVAL; + } + + lvts_data->efuse[index] = buf[j]; + index++; + } + + kfree(buf); + } + + ret = prepare_calibration_data(lvts_data); + + return ret; +} + +static int lvts_init_tc_regs(struct device *dev, struct lvts_data *lvts_data) +{ + struct tc_settings *tc = lvts_data->tc; + unsigned int i, j, s_index; + void __iomem *base; + + lvts_data->reg = devm_kcalloc(dev, lvts_data->num_sensor, + sizeof(*lvts_data->reg), GFP_KERNEL); + if (!lvts_data->reg) + return -ENOMEM; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + for (j = 0; j < tc[i].num_sensor; j++) { + s_index = tc[i].sensor_map[j]; + lvts_data->reg[s_index] = LVTSMSR0_0 + base + 0x4 * j; + } + } + + return 0; +} + +static int of_update_lvts_data(struct lvts_data *lvts_data, + struct platform_device *pdev) +{ + struct device *dev = lvts_data->dev; + struct power_domain *domain; + struct resource *res; + unsigned int i; + int ret; + + lvts_data->clk = devm_clk_get(dev, "lvts_clk"); + if (IS_ERR(lvts_data->clk)) + return PTR_ERR(lvts_data->clk); + + domain = devm_kcalloc(dev, lvts_data->num_domain, sizeof(*domain), GFP_KERNEL); + if (!domain) + return -ENOMEM; + + for (i = 0; i < lvts_data->num_domain; i++) { + /* Get base address */ + res = platform_get_resource(pdev, IORESOURCE_MEM, i); + if (!res) { + dev_err(dev, "No IO resource, index %d\n", i); + return -ENXIO; + } + + domain[i].base = devm_ioremap_resource(dev, res); + if (IS_ERR(domain[i].base)) { + dev_err(dev, "Failed to remap io, index %d\n", i); + return PTR_ERR(domain[i].base); + } + + /* Get interrupt number */ + res = platform_get_resource(pdev, IORESOURCE_IRQ, i); + if (!res) { + dev_err(dev, "No irq resource, index %d\n", i); + return -EINVAL; + } + domain[i].irq_num = res->start; + + /* Get reset control */ + domain[i].reset = devm_reset_control_get_by_index(dev, i); + if (IS_ERR(domain[i].reset)) { + dev_err(dev, "Failed to get, index %d\n", i); + return PTR_ERR(domain[i].reset); + } + } + + lvts_data->domain = domain; + + ret = lvts_init_tc_regs(dev, lvts_data); + if (ret) + return ret; + + ret = get_calibration_data(lvts_data); + if (ret) + return ret; + + return 0; +} + +static void lvts_device_close(struct lvts_data *lvts_data) +{ + unsigned int i; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + lvts_write_device(lvts_data, RESET_ALL_DEVICES, i); + writel(DISABLE_LVTS_CTRL_CLK, LVTSCLKEN_0 + base); + } +} + +static void lvts_close(struct lvts_data *lvts_data) +{ + disable_all_sensing_points(lvts_data); + wait_all_tc_sensing_point_idle(lvts_data); + lvts_device_close(lvts_data); + clk_disable_unprepare(lvts_data->clk); +} + +static void tc_irq_handler(struct lvts_data *lvts_data, int tc_id) +{ + struct device *dev = lvts_data->dev; + unsigned int ret = 0; + void __iomem *base; + + base = GET_BASE_ADDR(tc_id); + + ret = readl(LVTSMONINTSTS_0 + base); + /* Write back to clear interrupt status */ + writel(ret, LVTSMONINTSTS_0 + base); + + dev_info(dev, "[Thermal IRQ] LVTS thermal controller %d, LVTSMONINTSTS=0x%08x\n", + tc_id, ret); + + if (ret & THERMAL_PROTECTION_STAGE_3) + dev_info(dev, + "[Thermal IRQ]: Thermal protection stage 3 interrupt triggered\n"); +} + +static irqreturn_t irq_handler(int irq, void *dev_id) +{ + struct lvts_data *lvts_data = (struct lvts_data *)dev_id; + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + unsigned int i, *irq_bitmap; + void __iomem *base; + + irq_bitmap = kcalloc(lvts_data->num_domain, sizeof(*irq_bitmap), GFP_ATOMIC); + + if (!irq_bitmap) + return IRQ_NONE; + + for (i = 0; i < lvts_data->num_domain; i++) { + base = lvts_data->domain[i].base; + irq_bitmap[i] = readl(THERMINTST + base); + dev_info(dev, "%s : THERMINTST = 0x%x\n", __func__, irq_bitmap[i]); + } + + for (i = 0; i < lvts_data->num_tc; i++) { + if ((irq_bitmap[tc[i].domain_index] & tc[i].irq_bit) == 0) + tc_irq_handler(lvts_data, i); + } + + kfree(irq_bitmap); + + return IRQ_HANDLED; +} + +static int lvts_register_irq_handler(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + unsigned int i; + int ret; + + for (i = 0; i < lvts_data->num_domain; i++) { + ret = devm_request_irq(dev, lvts_data->domain[i].irq_num, irq_handler, + IRQF_TRIGGER_HIGH, "mtk_lvts", lvts_data); + + if (ret) { + dev_err(dev, "Failed to register LVTS IRQ, ret %d, domain %d irq_num %d\n", + ret, i, lvts_data->domain[i].irq_num); + lvts_close(lvts_data); + return ret; + } + } + + return 0; +} + +static int lvts_register_thermal_zones(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + struct thermal_zone *tzdev; + struct soc_temp_tz *lvts_tz; + int i, ret; + + for (i = 0; i < lvts_data->num_sensor; i++) { + lvts_tz = devm_kzalloc(dev, sizeof(*lvts_tz), GFP_KERNEL); + if (!lvts_tz) { + lvts_close(lvts_data); + return -ENOMEM; + } + + lvts_tz->id = i; + lvts_tz->lvts_data = lvts_data; + + tzdev = devm_thermal_zone_of_sensor_register(dev, lvts_tz->id, + lvts_tz, &soc_temp_lvts_ops); + + if (IS_ERR(tzdev)) { + if (lvts_tz->id != 0) + return 0; + + ret = PTR_ERR(tzdev); + dev_err(dev, "Error: Failed to register lvts tz %d, ret = %d\n", + lvts_tz->id, ret); + lvts_close(lvts_data); + return ret; + } + } + + return 0; +} + +static int lvts_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct lvts_data *lvts_data; + int ret; + + lvts_data = (struct lvts_data *)of_device_get_match_data(dev); + + if (!lvts_data) { + dev_err(dev, "Error: Failed to get lvts platform data\n"); + return -ENODATA; + } + + lvts_data->dev = &pdev->dev; + + ret = of_update_lvts_data(lvts_data, pdev); + if (ret) + return ret; + + platform_set_drvdata(pdev, lvts_data); + + ret = lvts_init(lvts_data); + if (ret) + return ret; + + ret = lvts_register_irq_handler(lvts_data); + if (ret) + return ret; + + ret = lvts_register_thermal_zones(lvts_data); + if (ret) + return ret; + + return 0; +} + +static int lvts_remove(struct platform_device *pdev) +{ + struct lvts_data *lvts_data; + + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); + + lvts_close(lvts_data); + + return 0; +} + +static int lvts_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct lvts_data *lvts_data; + + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); + + lvts_close(lvts_data); + + return 0; +} + +static int lvts_resume(struct platform_device *pdev) +{ + int ret; + struct lvts_data *lvts_data; + + lvts_data = (struct lvts_data *)platform_get_drvdata(pdev); + + ret = lvts_init(lvts_data); + if (ret) + return ret; + + return 0; +} + +/*================================================== + * LVTS v4 common code + *================================================== + */ +static void device_enable_and_init_v4(struct lvts_data *lvts_data) +{ + unsigned int i; + + for (i = 0; i < lvts_data->num_tc; i++) { + lvts_write_device(lvts_data, STOP_COUNTING_V4, i); + lvts_write_device(lvts_data, SET_RG_TSFM_LPDLY_V4, i); + lvts_write_device(lvts_data, SET_COUNTING_WINDOW_20US1_V4, i); + lvts_write_device(lvts_data, SET_COUNTING_WINDOW_20US2_V4, i); + lvts_write_device(lvts_data, TSV2F_CHOP_CKSEL_AND_TSV2F_EN_V4, i); + lvts_write_device(lvts_data, TSBG_DEM_CKSEL_X_TSBG_CHOP_EN_V4, i); + lvts_write_device(lvts_data, SET_TS_RSV_V4, i); + lvts_write_device(lvts_data, SET_TS_EN_V4, i); + lvts_write_device(lvts_data, TOGGLE_RG_TSV2F_VCO_RST1_V4, i); + lvts_write_device(lvts_data, TOGGLE_RG_TSV2F_VCO_RST2_V4, i); + } + + lvts_data->counting_window_us = 20; +} + +static void device_enable_auto_rck_v4(struct lvts_data *lvts_data) +{ + unsigned int i; + + for (i = 0; i < lvts_data->num_tc; i++) + lvts_write_device(lvts_data, SET_LVTS_AUTO_RCK_V4, i); +} + +static int device_read_count_rc_n_v4(struct lvts_data *lvts_data) +{ + /* Resistor-Capacitor Calibration */ + /* count_RC_N: count RC now */ + struct device *dev = lvts_data->dev; + struct tc_settings *tc = lvts_data->tc; + struct sensor_cal_data *cal_data = &lvts_data->cal_data; + unsigned int offset, size, s_index, data; + void __iomem *base; + int ret, i, j; + char buffer[512]; + + cal_data->count_rc_now = devm_kcalloc(dev, lvts_data->num_sensor, + sizeof(*cal_data->count_rc_now), GFP_KERNEL); + if (!cal_data->count_rc_now) + return -ENOMEM; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + for (j = 0; j < tc[i].num_sensor; j++) { + s_index = tc[i].sensor_map[j]; + + lvts_write_device(lvts_data, SELECT_SENSOR_RCK_V4(j), i); + lvts_write_device(lvts_data, SET_DEVICE_SINGLE_MODE_V4, i); + usleep_range(10, 20); + + lvts_write_device(lvts_data, KICK_OFF_RCK_COUNTING_V4, i); + usleep_range(30, 40); + + ret = readl_poll_timeout(LVTS_CONFIG_0 + base, data, + !(data & DEVICE_SENSING_STATUS), 2, 200); + if (ret) + dev_err(dev, + "Error: LVTS %d DEVICE_SENSING_STATUS didn't ready\n", i); + + data = lvts_read_device(lvts_data, 0x00, i); + + cal_data->count_rc_now[s_index] = (data & GENMASK(23, 0)); + } + + /* Recover Setting for Normal Access on + * temperature fetch + */ + lvts_write_device(lvts_data, SET_SENSOR_NO_RCK_V4, i); + lvts_write_device(lvts_data, SET_DEVICE_LOW_POWER_SINGLE_MODE_V4, i); + } + + size = sizeof(buffer); + offset = snprintf(buffer, size, "[COUNT_RC_NOW] "); + for (i = 0; i < lvts_data->num_sensor; i++) + offset += snprintf(buffer + offset, size - offset, "%d:%d ", + i, cal_data->count_rc_now[i]); + + buffer[offset] = '\0'; + dev_info(dev, "%s\n", buffer); + + return 0; +} + +static void set_calibration_data_v4(struct lvts_data *lvts_data) +{ + struct tc_settings *tc = lvts_data->tc; + struct sensor_cal_data *cal_data = &lvts_data->cal_data; + unsigned int i, j, s_index, e_data; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + + for (j = 0; j < tc[i].num_sensor; j++) { + s_index = tc[i].sensor_map[j]; + if (IS_ENABLE(FEATURE_DEVICE_AUTO_RCK)) + e_data = cal_data->count_r[s_index]; + else + e_data = (((unsigned long long) + cal_data->count_rc_now[s_index]) * + cal_data->count_r[s_index]) >> 14; + + writel(e_data, LVTSEDATA00_0 + base + 0x4 * j); + } + } +} + +static void init_controller_v4(struct lvts_data *lvts_data) +{ + struct device *dev = lvts_data->dev; + unsigned int i; + void __iomem *base; + + for (i = 0; i < lvts_data->num_tc; i++) { + base = GET_BASE_ADDR(i); + + lvts_write_device(lvts_data, SET_DEVICE_LOW_POWER_SINGLE_MODE_V4, i); + + writel(SET_SENSOR_INDEX, LVTSTSSEL_0 + base); + writel(SET_CALC_SCALE_RULES, LVTSCALSCALE_0 + base); + + set_polling_speed(lvts_data, i); + set_hw_filter(lvts_data, i); + + dev_info(dev, "lvts%d: read all %d sensors in %d us, one in %d us\n", + i, GET_TC_SENSOR_NUM(i), GROUP_LATENCY_US(i), SENSOR_LATENCY_US(i)); + } +} + +/*================================================== + * LVTS MT6873 + *================================================== + */ + +#define MT6873_NUM_LVTS (ARRAY_SIZE(mt6873_tc_settings)) + +enum mt6873_lvts_domain { + MT6873_AP_DOMAIN, + MT6873_MCU_DOMAIN, + MT6873_NUM_DOMAIN +}; + +enum mt6873_lvts_sensor_enum { + MT6873_TS1_0, + MT6873_TS1_1, + MT6873_TS2_0, + MT6873_TS2_1, + MT6873_TS3_0, + MT6873_TS3_1, + MT6873_TS3_2, + MT6873_TS3_3, + MT6873_TS4_0, + MT6873_TS4_1, + MT6873_TS5_0, + MT6873_TS5_1, + MT6873_TS6_0, + MT6873_TS6_1, + MT6873_TS7_0, + MT6873_TS7_1, + MT6873_TS7_2, + MT6873_NUM_TS +}; + +static void mt6873_efuse_to_cal_data(struct lvts_data *lvts_data) +{ + struct sensor_cal_data *cal_data = &lvts_data->cal_data; + + cal_data->golden_temp = GET_CAL_DATA_BITMASK(0, 31, 24); + cal_data->count_r[MT6873_TS1_0] = GET_CAL_DATA_BITMASK(1, 23, 0); + cal_data->count_r[MT6873_TS1_1] = GET_CAL_DATA_BITMASK(2, 23, 0); + cal_data->count_r[MT6873_TS2_0] = GET_CAL_DATA_BITMASK(3, 23, 0); + cal_data->count_r[MT6873_TS2_1] = GET_CAL_DATA_BITMASK(4, 23, 0); + cal_data->count_r[MT6873_TS3_0] = GET_CAL_DATA_BITMASK(5, 23, 0); + cal_data->count_r[MT6873_TS3_1] = GET_CAL_DATA_BITMASK(6, 23, 0); + cal_data->count_r[MT6873_TS3_2] = GET_CAL_DATA_BITMASK(7, 23, 0); + cal_data->count_r[MT6873_TS3_3] = GET_CAL_DATA_BITMASK(8, 23, 0); + cal_data->count_r[MT6873_TS4_0] = GET_CAL_DATA_BITMASK(9, 23, 0); + cal_data->count_r[MT6873_TS4_1] = GET_CAL_DATA_BITMASK(10, 23, 0); + cal_data->count_r[MT6873_TS5_0] = GET_CAL_DATA_BITMASK(11, 23, 0); + cal_data->count_r[MT6873_TS5_1] = GET_CAL_DATA_BITMASK(12, 23, 0); + cal_data->count_r[MT6873_TS6_0] = GET_CAL_DATA_BITMASK(13, 23, 0); + cal_data->count_r[MT6873_TS6_1] = GET_CAL_DATA_BITMASK(14, 23, 0); + cal_data->count_r[MT6873_TS7_0] = GET_CAL_DATA_BITMASK(15, 23, 0); + cal_data->count_r[MT6873_TS7_1] = GET_CAL_DATA_BITMASK(16, 23, 0); + cal_data->count_r[MT6873_TS7_2] = GET_CAL_DATA_BITMASK(17, 23, 0); + + cal_data->count_rc[MT6873_TS1_0] = GET_CAL_DATA_BITMASK(21, 23, 0); + + cal_data->count_rc[MT6873_TS2_0] = (GET_CAL_DATA_BITMASK(1, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(2, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(3, 31, 24); + + cal_data->count_rc[MT6873_TS3_0] = (GET_CAL_DATA_BITMASK(4, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(5, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(6, 31, 24); + + cal_data->count_rc[MT6873_TS4_0] = (GET_CAL_DATA_BITMASK(7, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(8, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(9, 31, 24); + + cal_data->count_rc[MT6873_TS5_0] = (GET_CAL_DATA_BITMASK(10, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(11, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(12, 31, 24); + + cal_data->count_rc[MT6873_TS6_0] = (GET_CAL_DATA_BITMASK(13, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(14, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(15, 31, 24); + + cal_data->count_rc[MT6873_TS7_0] = (GET_CAL_DATA_BITMASK(16, 31, 24) << 16) + + (GET_CAL_DATA_BITMASK(17, 31, 24) << 8) + + GET_CAL_DATA_BITMASK(18, 31, 24); +} + +static struct tc_settings mt6873_tc_settings[] = { + [0] = { + .domain_index = MT6873_MCU_DOMAIN, + .addr_offset = 0x0, + .num_sensor = 2, + .sensor_map = {MT6873_TS1_0, MT6873_TS1_1}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT1, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(3), + }, + [1] = { + .domain_index = MT6873_MCU_DOMAIN, + .addr_offset = 0x100, + .num_sensor = 2, + .sensor_map = {MT6873_TS2_0, MT6873_TS2_1}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT0, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(4), + }, + [2] = { + .domain_index = MT6873_MCU_DOMAIN, + .addr_offset = 0x200, + .num_sensor = 4, + .sensor_map = {MT6873_TS3_0, MT6873_TS3_1, MT6873_TS3_2, MT6873_TS3_3}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT0, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(5), + }, + [3] = { + .domain_index = MT6873_AP_DOMAIN, + .addr_offset = 0x0, + .num_sensor = 2, + .sensor_map = {MT6873_TS4_0, MT6873_TS4_1}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT0, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(3), + }, + [4] = { + .domain_index = MT6873_AP_DOMAIN, + .addr_offset = 0x100, + .num_sensor = 2, + .sensor_map = {MT6873_TS5_0, MT6873_TS5_1}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT1, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(4), + }, + [5] = { + .domain_index = MT6873_AP_DOMAIN, + .addr_offset = 0x200, + .num_sensor = 2, + .sensor_map = {MT6873_TS6_0, MT6873_TS6_1}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT1, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(5), + }, + [6] = { + .domain_index = MT6873_AP_DOMAIN, + .addr_offset = 0x300, + .num_sensor = 3, + .sensor_map = {MT6873_TS7_0, MT6873_TS7_1, MT6873_TS7_2}, + .tc_speed = SET_TC_SPEED_IN_US(118, 118, 118, 118), + .hw_filter = LVTS_FILTER_2_OF_4, + .dominator_sensing_point = SENSING_POINT2, + .hw_reboot_trip_point = 117000, + .irq_bit = BIT(6), + } +}; + +static struct lvts_data mt6873_lvts_data = { + .num_domain = MT6873_NUM_DOMAIN, + .num_tc = MT6873_NUM_LVTS, + .tc = mt6873_tc_settings, + .num_sensor = MT6873_NUM_TS, + .ops = { + .efuse_to_cal_data = mt6873_efuse_to_cal_data, + .device_enable_and_init = device_enable_and_init_v4, + .device_enable_auto_rck = device_enable_auto_rck_v4, + .device_read_count_rc_n = device_read_count_rc_n_v4, + .set_cal_data = set_calibration_data_v4, + .init_controller = init_controller_v4, + }, + .feature_bitmap = FEATURE_DEVICE_AUTO_RCK, + .num_efuse_addr = 22, + .num_efuse_block = 1, + .cal_data = { + .default_golden_temp = 50, + .default_count_r = 35000, + .default_count_rc = 2750, + }, + .coeff = { + .a = -250460, + .b = 250460, + }, +}; + +/*================================================== + *================================================== + * Support chips + *================================================== + */ +static const struct of_device_id lvts_of_match[] = { + { + .compatible = "mediatek,mt6873-lvts", + .data = (void *)&mt6873_lvts_data, + }, + { + }, +}; +MODULE_DEVICE_TABLE(of, lvts_of_match); +/*==================================================*/ +static struct platform_driver soc_temp_lvts = { + .probe = lvts_probe, + .remove = lvts_remove, + .suspend = lvts_suspend, + .resume = lvts_resume, + .driver = { + .name = "mtk-soc-temp-lvts", + .of_match_table = lvts_of_match, + }, +}; + +module_platform_driver(soc_temp_lvts); +MODULE_AUTHOR("Yu-Chia Chang <ethan.chang@mediatek.com>"); +MODULE_AUTHOR("Michael Kao <michael.kao@mediatek.com>"); +MODULE_DESCRIPTION("Mediatek soc temperature driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/mediatek/soc_temp_lvts.h b/drivers/thermal/mediatek/soc_temp_lvts.h new file mode 100644 index 000000000000..77c64145aa17 --- /dev/null +++ b/drivers/thermal/mediatek/soc_temp_lvts.h @@ -0,0 +1,312 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 MediaTek Inc. + */ + +#ifndef __MTK_SOC_TEMP_LVTS_H__ +#define __MTK_SOC_TEMP_LVTS_H__ + +/* LVTS HW filter settings + * 000: Get one sample + * 001: Get 2 samples and average them + * 010: Get 4 samples, drop max and min, then average the rest of 2 samples + * 011: Get 6 samples, drop max and min, then average the rest of 4 samples + * 100: Get 10 samples, drop max and min, then average the rest of 8 samples + * 101: Get 18 samples, drop max and min, then average the rest of 16 samples + */ +enum lvts_hw_filter { + LVTS_FILTER_1, + LVTS_FILTER_2, + LVTS_FILTER_2_OF_4, + LVTS_FILTER_4_OF_6, + LVTS_FILTER_8_OF_10, + LVTS_FILTER_16_OF_18 +}; + +enum lvts_sensing_point { + SENSING_POINT0, + SENSING_POINT1, + SENSING_POINT2, + SENSING_POINT3, + ALL_SENSING_POINTS +}; + +/*================================================== + * Data structure + *================================================== + */ +struct lvts_data; + +struct speed_settings { + unsigned int period_unit; + unsigned int group_interval_delay; + unsigned int filter_interval_delay; + unsigned int sensor_interval_delay; +}; + +struct tc_settings { + unsigned int domain_index; + unsigned int addr_offset; + unsigned int num_sensor; + unsigned int sensor_map[ALL_SENSING_POINTS]; /* In sensor ID */ + struct speed_settings tc_speed; + /* HW filter setting + * 000: Get one sample + * 001: Get 2 samples and average them + * 010: Get 4 samples, drop max and min, then average the rest of 2 samples + * 011: Get 6 samples, drop max and min, then average the rest of 4 samples + * 100: Get 10 samples, drop max and min, then average the rest of 8 samples + * 101: Get 18 samples, drop max and min, then average the rest of 16 samples + */ + unsigned int hw_filter; + /* Dominator_sensing point is used to select a sensing point + * and reference its temperature to trigger Thermal HW Reboot + * When it is ALL_SENSING_POINTS, it will select all sensing points + */ + int dominator_sensing_point; + int hw_reboot_trip_point; /* -274000: Disable HW reboot */ + unsigned int irq_bit; +}; + +struct formula_coeff { + int a; + int b; + unsigned int golden_temp; +}; + +struct sensor_cal_data { + int use_fake_efuse; /* 1: Use fake efuse, 0: Use real efuse */ + unsigned int golden_temp; + unsigned int *count_r; + unsigned int *count_rc; + unsigned int *count_rc_now; + + unsigned int default_golden_temp; + unsigned int default_count_r; + unsigned int default_count_rc; +}; + +struct platform_ops { + void (*efuse_to_cal_data)(struct lvts_data *lvts_data); + void (*device_enable_and_init)(struct lvts_data *lvts_data); + void (*device_enable_auto_rck)(struct lvts_data *lvts_data); + int (*device_read_count_rc_n)(struct lvts_data *lvts_data); + void (*set_cal_data)(struct lvts_data *lvts_data); + void (*init_controller)(struct lvts_data *lvts_data); +}; + +struct power_domain { + void __iomem *base; /* LVTS base addresses */ + unsigned int irq_num; /* LVTS interrupt numbers */ + struct reset_control *reset; +}; + +struct sensor_data { + void __iomem *base; /* Sensor base address */ + int offset; /* Sensor offset */ +}; + +struct lvts_data { + struct device *dev; + struct clk *clk; + unsigned int num_domain; + struct power_domain *domain; + + int num_tc; /* Number of LVTS thermal controllers */ + struct tc_settings *tc; + int counting_window_us; /* LVTS device counting window */ + + int num_sensor; /* Number of sensors in this platform */ + void __iomem **reg; + + struct platform_ops ops; + int feature_bitmap; /* Show what features are enabled */ + + unsigned int num_efuse_addr; + unsigned int *efuse; + unsigned int num_efuse_block; /* Number of contiguous efuse indexes */ + struct sensor_cal_data cal_data; + struct formula_coeff coeff; +}; + +struct soc_temp_tz { + unsigned int id; /* if id is 0, get max temperature of all sensors */ + struct lvts_data *lvts_data; +}; + +struct match_entry { + char chip[32]; + struct lvts_data *lvts_data; +}; + +struct lvts_match_data { + unsigned int hw_version; + struct match_entry *table; + void (*set_up_common_callbacks)(struct lvts_data *lvts_data); + struct list_head node; +}; + +struct lvts_id { + unsigned int hw_version; + char chip[32]; +}; + +/*================================================== + * LVTS device register + *================================================== + */ +#define RG_TSFM_DATA_0 0x00 +#define RG_TSFM_DATA_1 0x01 +#define RG_TSFM_DATA_2 0x02 +#define RG_TSFM_CTRL_0 0x03 +#define RG_TSFM_CTRL_1 0x04 +#define RG_TSFM_CTRL_2 0x05 +#define RG_TSFM_CTRL_3 0x06 +#define RG_TSFM_CTRL_4 0x07 +#define RG_TSV2F_CTRL_0 0x08 +#define RG_TSV2F_CTRL_1 0x09 +#define RG_TSV2F_CTRL_2 0x0A +#define RG_TSV2F_CTRL_3 0x0B +#define RG_TSV2F_CTRL_4 0x0C +#define RG_TSV2F_CTRL_5 0x0D +#define RG_TSV2F_CTRL_6 0x0E +#define RG_TEMP_DATA_0 0x10 +#define RG_TEMP_DATA_1 0x11 +#define RG_TEMP_DATA_2 0x12 +#define RG_TEMP_DATA_3 0x13 +#define RG_RC_DATA_0 0x14 +#define RG_RC_DATA_1 0x15 +#define RG_RC_DATA_2 0x16 +#define RG_RC_DATA_3 0x17 +#define RG_DIV_DATA_0 0x18 +#define RG_DIV_DATA_1 0x19 +#define RG_DIV_DATA_2 0x1A +#define RG_DIV_DATA_3 0x1B +#define RG_TST_DATA_0 0x70 +#define RG_TST_DATA_1 0x71 +#define RG_TST_DATA_2 0x72 +#define RG_TST_CTRL 0x73 +#define RG_DBG_FQMTR 0xF0 +#define RG_DBG_LPSEQ 0xF1 +#define RG_DBG_STATE 0xF2 +#define RG_DBG_CHKSUM 0xF3 +#define RG_DID_LVTS 0xFC +#define RG_DID_REV 0xFD +#define RG_TSFM_RST 0xFF +/*================================================== + * LVTS controller register + *================================================== + */ +#define LVTSMONCTL0_0 0x000 +#define LVTS_SINGLE_SENSE BIT(9) +#define ENABLE_SENSING_POINT(num) (LVTS_SINGLE_SENSE | GENMASK(((num) - 1), 0)) +#define DISABLE_SENSING_POINT (LVTS_SINGLE_SENSE | 0x0) +#define LVTSMONCTL1_0 0x004 +#define LVTSMONCTL2_0 0x008 +#define LVTSMONINT_0 0x00C +#define STAGE3_INT_EN BIT(31) +#define LVTSMONINTSTS_0 0x010 +#define LVTSMONIDET0_0 0x014 +#define LVTSMONIDET1_0 0x018 +#define LVTSMONIDET2_0 0x01C +#define LVTSMONIDET3_0 0x020 +#define LVTSH2NTHRE_0 0x024 +#define LVTSHTHRE_0 0x028 +#define LVTSCTHRE_0 0x02C +#define LVTSOFFSETH_0 0x030 +#define LVTSOFFSETL_0 0x034 +#define LVTSMSRCTL0_0 0x038 +#define LVTSMSRCTL1_0 0x03C +#define LVTSTSSEL_0 0x040 +#define SET_SENSOR_INDEX 0x13121110 +#define LVTSDEVICETO_0 0x044 +#define LVTSCALSCALE_0 0x048 +#define SET_CALC_SCALE_RULES 0x00000300 +#define LVTS_ID_0 0x04C +#define LVTS_CONFIG_0 0x050 + +#define BROADCAST_ID_UPDATE BIT(26) +#define DEVICE_SENSING_STATUS BIT(25) +#define DEVICE_ACCESS_STARTUS BIT(24) +#define WRITE_ACCESS BIT(16) +#define DEVICE_WRITE (BIT(31) | CK26M_ACTIVE | DEVICE_ACCESS_STARTUS \ + | BIT(17) | WRITE_ACCESS) +#define DEVICE_READ (BIT(31) | CK26M_ACTIVE | DEVICE_ACCESS_STARTUS \ + | 1 << 17) +#define RESET_ALL_DEVICES (DEVICE_WRITE | RG_TSFM_RST << 8 | 0xFF) +#define READ_BACK_DEVICE_ID (BIT(31) | CK26M_ACTIVE | BROADCAST_ID_UPDATE \ + | DEVICE_ACCESS_STARTUS | BIT(17) \ + | RG_DID_LVTS << 8) +#define READ_DEVICE_REG(reg_idx) (DEVICE_READ | (reg_idx) << 8 | 0x00) +#define LVTSEDATA00_0 0x054 +#define LVTSEDATA01_0 0x058 +#define LVTSEDATA02_0 0x05C +#define LVTSEDATA03_0 0x060 +#define LVTSMSR0_0 0x090 +#define MRS_RAW_MASK GENMASK(15, 0) +#define MRS_RAW_VALID_BIT BIT(16) +#define LVTSMSR1_0 0x094 +#define LVTSMSR2_0 0x098 +#define LVTSMSR3_0 0x09C +#define LVTSIMMD0_0 0x0A0 +#define LVTSIMMD1_0 0x0A4 +#define LVTSIMMD2_0 0x0A8 +#define LVTSIMMD3_0 0x0AC +#define LVTSRDATA0_0 0x0B0 +#define LVTSRDATA1_0 0x0B4 +#define LVTSRDATA2_0 0x0B8 +#define LVTSRDATA3_0 0x0BC +#define LVTSPROTCTL_0 0x0C0 +#define PROTOFFSET GENMASK(15, 0) +#define LVTSPROTTA_0 0x0C4 +#define LVTSPROTTB_0 0x0C8 +#define LVTSPROTTC_0 0x0CC +#define LVTSCLKEN_0 0x0E4 +#define ENABLE_LVTS_CTRL_CLK (1) +#define DISABLE_LVTS_CTRL_CLK (0) +#define LVTSDBGSEL_0 0x0E8 +#define LVTSDBGSIG_0 0x0EC +#define LVTSSPARE0_0 0x0F0 +#define LVTSSPARE1_0 0x0F4 +#define LVTSSPARE2_0 0x0F8 +#define LVTSSPARE3_0 0x0FC + +#define THERMINTST 0xF04 +/*================================================== + * LVTS register mask + *================================================== + */ +#define THERMAL_COLD_INTERRUPT_0 0x00000001 +#define THERMAL_HOT_INTERRUPT_0 0x00000002 +#define THERMAL_LOW_OFFSET_INTERRUPT_0 0x00000004 +#define THERMAL_HIGH_OFFSET_INTERRUPT_0 0x00000008 +#define THERMAL_HOT2NORMAL_INTERRUPT_0 0x00000010 +#define THERMAL_COLD_INTERRUPT_1 0x00000020 +#define THERMAL_HOT_INTERRUPT_1 0x00000040 +#define THERMAL_LOW_OFFSET_INTERRUPT_1 0x00000080 +#define THERMAL_HIGH_OFFSET_INTERRUPT_1 0x00000100 +#define THERMAL_HOT2NORMAL_INTERRUPT_1 0x00000200 +#define THERMAL_COLD_INTERRUPT_2 0x00000400 +#define THERMAL_HOT_INTERRUPT_2 0x00000800 +#define THERMAL_LOW_OFFSET_INTERRUPT_2 0x00001000 +#define THERMAL_HIGH_OFFSET_INTERRUPT_2 0x00002000 +#define THERMAL_HOT2NORMAL_INTERRUPT_2 0x00004000 +#define THERMAL_AHB_TIMEOUT_INTERRUPT 0x00008000 +#define THERMAL_DEVICE_TIMEOUT_INTERRUPT 0x00008000 +#define THERMAL_IMMEDIATE_INTERRUPT_0 0x00010000 +#define THERMAL_IMMEDIATE_INTERRUPT_1 0x00020000 +#define THERMAL_IMMEDIATE_INTERRUPT_2 0x00040000 +#define THERMAL_FILTER_INTERRUPT_0 0x00080000 +#define THERMAL_FILTER_INTERRUPT_1 0x00100000 +#define THERMAL_FILTER_INTERRUPT_2 0x00200000 +#define THERMAL_COLD_INTERRUPT_3 0x00400000 +#define THERMAL_HOT_INTERRUPT_3 0x00800000 +#define THERMAL_LOW_OFFSET_INTERRUPT_3 0x01000000 +#define THERMAL_HIGH_OFFSET_INTERRUPT_3 0x02000000 +#define THERMAL_HOT2NORMAL_INTERRUPT_3 0x04000000 +#define THERMAL_IMMEDIATE_INTERRUPT_3 0x08000000 +#define THERMAL_FILTER_INTERRUPT_3 0x10000000 +#define THERMAL_PROTECTION_STAGE_1 0x20000000 +#define THERMAL_PROTECTION_STAGE_2 0x40000000 +#define THERMAL_PROTECTION_STAGE_3 0x80000000 +#endif /* __MTK_SOC_TEMP_LVTS_H__ */