// SPDX-License-Identifier: GPL-2.0-only /* intel_pch_thermal.c - Intel PCH Thermal driver * * Copyright (c) 2015, Intel Corporation. * * Authors: * Tushar Dave <[email protected]> */ #include <linux/acpi.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/pm.h> #include <linux/suspend.h> #include <linux/thermal.h> #include <linux/types.h> #include <linux/units.h> /* Intel PCH thermal Device IDs */ #define PCH_THERMAL_DID_HSW_1 … #define PCH_THERMAL_DID_HSW_2 … #define PCH_THERMAL_DID_WPT … #define PCH_THERMAL_DID_SKL … #define PCH_THERMAL_DID_SKL_H … #define PCH_THERMAL_DID_CNL … #define PCH_THERMAL_DID_CNL_H … #define PCH_THERMAL_DID_CNL_LP … #define PCH_THERMAL_DID_CML_H … #define PCH_THERMAL_DID_LWB … #define PCH_THERMAL_DID_WBG … /* Wildcat Point-LP PCH Thermal registers */ #define WPT_TEMP … #define WPT_TSC … #define WPT_TSS … #define WPT_TSEL … #define WPT_TSREL … #define WPT_TSMIC … #define WPT_CTT … #define WPT_TSPM … #define WPT_TAHV … #define WPT_TALV … #define WPT_TL … #define WPT_PHL … #define WPT_PHLC … #define WPT_TAS … #define WPT_TSPIEN … #define WPT_TSGPEN … /* Wildcat Point-LP PCH Thermal Register bit definitions */ #define WPT_TEMP_TSR … #define WPT_TSC_CPDE … #define WPT_TSS_TSDSS … #define WPT_TSS_GPES … #define WPT_TSEL_ETS … #define WPT_TSEL_PLDB … #define WPT_TL_TOL … #define WPT_TL_T1L … #define WPT_TL_TTEN … /* Resolution of 1/2 degree C and an offset of -50C */ #define PCH_TEMP_OFFSET … #define GET_WPT_TEMP(x) … #define WPT_TEMP_OFFSET … #define GET_PCH_TEMP(x) … #define PCH_MAX_TRIPS … /* Amount of time for each cooling delay, 100ms by default for now */ static unsigned int delay_timeout = …; module_param(delay_timeout, int, 0644); MODULE_PARM_DESC(…) …; /* Number of iterations for cooling delay, 600 counts by default for now */ static unsigned int delay_cnt = …; module_param(delay_cnt, int, 0644); MODULE_PARM_DESC(…) …; static char driver_name[] = …; struct pch_thermal_device { … }; #ifdef CONFIG_ACPI /* * On some platforms, there is a companion ACPI device, which adds * passive trip temperature using _PSV method. There is no specific * passive temperature setting in MMIO interface of this PCI device. */ static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, struct thermal_trip *trip) { … } #else static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, struct thermal_trip *trip) { return 0; } #endif static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp) { … } static void pch_critical(struct thermal_zone_device *tzd) { … } static const struct thermal_zone_device_ops tzd_ops = …; enum pch_board_ids { … }; static const char *board_names[] = …; static int intel_pch_thermal_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static void intel_pch_thermal_remove(struct pci_dev *pdev) { … } static int intel_pch_thermal_suspend_noirq(struct device *device) { … } static int intel_pch_thermal_resume(struct device *device) { … } static const struct pci_device_id intel_pch_thermal_id[] = …; MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id); static const struct dev_pm_ops intel_pch_pm_ops = …; static struct pci_driver intel_pch_thermal_driver = …; module_pci_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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