// SPDX-License-Identifier: GPL-2.0 /* * TI Bandgap temperature sensor driver for J72XX SoC Family * * Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/ */ #include <linux/math.h> #include <linux/math64.h> #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/err.h> #include <linux/types.h> #include <linux/io.h> #include <linux/thermal.h> #include <linux/of.h> #include <linux/delay.h> #include <linux/slab.h> #define K3_VTM_DEVINFO_PWR0_OFFSET … #define K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK … #define K3_VTM_TMPSENS0_CTRL_OFFSET … #define K3_VTM_MISC_CTRL_OFFSET … #define K3_VTM_TMPSENS_STAT_OFFSET … #define K3_VTM_ANYMAXT_OUTRG_ALERT_EN … #define K3_VTM_MISC_CTRL2_OFFSET … #define K3_VTM_TS_STAT_DTEMP_MASK … #define K3_VTM_MAX_NUM_TS … #define K3_VTM_TMPSENS_CTRL_SOC … #define K3_VTM_TMPSENS_CTRL_CLRZ … #define K3_VTM_TMPSENS_CTRL_CLKON_REQ … #define K3_VTM_TMPSENS_CTRL_MAXT_OUTRG_EN … #define K3_VTM_CORRECTION_TEMP_CNT … #define MINUS40CREF … #define PLUS30CREF … #define PLUS125CREF … #define PLUS150CREF … #define TABLE_SIZE … #define MAX_TEMP … #define COOL_DOWN_TEMP … #define FACTORS_REDUCTION … static int *derived_table; static int compute_value(int index, const s64 *factors, int nr_factors, int reduction) { … } static void init_table(int factors_size, int *table, const s64 *factors) { … } /** * struct err_values - structure containing error/reference values * @refs: reference error values for -40C, 30C, 125C & 150C * @errs: Actual error values for -40C, 30C, 125C & 150C read from the efuse */ struct err_values { … }; static void create_table_segments(struct err_values *err_vals, int seg, int *ref_table) { … } static int prep_lookup_table(struct err_values *err_vals, int *ref_table) { … } struct k3_thermal_data; struct k3_j72xx_bandgap { … }; /* common data structures */ struct k3_thermal_data { … }; static int two_cmp(int tmp, int mask) { … } static unsigned int vtm_get_best_value(unsigned int s0, unsigned int s1, unsigned int s2) { … } static inline int k3_bgp_read_temp(struct k3_thermal_data *devdata, int *temp) { … } /* Get temperature callback function for thermal zone */ static int k3_thermal_get_temp(struct thermal_zone_device *tz, int *temp) { … } static const struct thermal_zone_device_ops k3_of_thermal_ops = …; static int k3_j72xx_bandgap_temp_to_adc_code(int temp) { … } static void get_efuse_values(int id, struct k3_thermal_data *data, int *err, void __iomem *fuse_base) { … } static void print_look_up_table(struct device *dev, int *ref_table) { … } static void k3_j72xx_bandgap_init_hw(struct k3_j72xx_bandgap *bgp) { … } struct k3_j72xx_bandgap_data { … }; static int k3_j72xx_bandgap_probe(struct platform_device *pdev) { … } static void k3_j72xx_bandgap_remove(struct platform_device *pdev) { … } static int k3_j72xx_bandgap_suspend(struct device *dev) { … } static int k3_j72xx_bandgap_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(k3_j72xx_bandgap_pm_ops, k3_j72xx_bandgap_suspend, k3_j72xx_bandgap_resume); static const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j721e_data = …; static const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j7200_data = …; static const struct of_device_id of_k3_j72xx_bandgap_match[] = …; MODULE_DEVICE_TABLE(of, of_k3_j72xx_bandgap_match); static struct platform_driver k3_j72xx_bandgap_sensor_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …;
Codebase Browser
linux