diff options
author | Amit Kucheria <amit.kucheria@linaro.org> | 2018-12-07 12:25:26 +0530 |
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committer | Zhang Rui <rui.zhang@intel.com> | 2018-12-07 16:48:47 +0800 |
commit | 3e8c4d31f8eddc957ee293b3556586ee698d9a21 (patch) | |
tree | e531ecd7a8b3736bed325d28dddc52abd6b0edfb /drivers/thermal/intel_pch_thermal.c | |
parent | 209d07e63e14e04558cebba5e401e41bbde67b88 (diff) | |
download | linux-3e8c4d31f8eddc957ee293b3556586ee698d9a21.tar.bz2 |
drivers: thermal: Move various drivers for intel platforms into a subdir
This cleans up the directory a bit, now that we have several other
platforms using platform-specific sub-directories. Compile-tested with
ARCH=x86 defconfig and the drivers explicitly enabled with menuconfig.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/intel_pch_thermal.c')
-rw-r--r-- | drivers/thermal/intel_pch_thermal.c | 432 |
1 files changed, 0 insertions, 432 deletions
diff --git a/drivers/thermal/intel_pch_thermal.c b/drivers/thermal/intel_pch_thermal.c deleted file mode 100644 index 8a7f69b4b022..000000000000 --- a/drivers/thermal/intel_pch_thermal.c +++ /dev/null @@ -1,432 +0,0 @@ -/* intel_pch_thermal.c - Intel PCH Thermal driver - * - * Copyright (c) 2015, Intel Corporation. - * - * Authors: - * Tushar Dave <tushar.n.dave@intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/acpi.h> -#include <linux/thermal.h> -#include <linux/pm.h> - -/* Intel PCH thermal Device IDs */ -#define PCH_THERMAL_DID_HSW_1 0x9C24 /* Haswell PCH */ -#define PCH_THERMAL_DID_HSW_2 0x8C24 /* Haswell PCH */ -#define PCH_THERMAL_DID_WPT 0x9CA4 /* Wildcat Point */ -#define PCH_THERMAL_DID_SKL 0x9D31 /* Skylake PCH */ -#define PCH_THERMAL_DID_SKL_H 0xA131 /* Skylake PCH 100 series */ -#define PCH_THERMAL_DID_CNL 0x9Df9 /* CNL PCH */ -#define PCH_THERMAL_DID_CNL_H 0xA379 /* CNL-H PCH */ - -/* Wildcat Point-LP PCH Thermal registers */ -#define WPT_TEMP 0x0000 /* Temperature */ -#define WPT_TSC 0x04 /* Thermal Sensor Control */ -#define WPT_TSS 0x06 /* Thermal Sensor Status */ -#define WPT_TSEL 0x08 /* Thermal Sensor Enable and Lock */ -#define WPT_TSREL 0x0A /* Thermal Sensor Report Enable and Lock */ -#define WPT_TSMIC 0x0C /* Thermal Sensor SMI Control */ -#define WPT_CTT 0x0010 /* Catastrophic Trip Point */ -#define WPT_TAHV 0x0014 /* Thermal Alert High Value */ -#define WPT_TALV 0x0018 /* Thermal Alert Low Value */ -#define WPT_TL 0x00000040 /* Throttle Value */ -#define WPT_PHL 0x0060 /* PCH Hot Level */ -#define WPT_PHLC 0x62 /* PHL Control */ -#define WPT_TAS 0x80 /* Thermal Alert Status */ -#define WPT_TSPIEN 0x82 /* PCI Interrupt Event Enables */ -#define WPT_TSGPEN 0x84 /* General Purpose Event Enables */ - -/* Wildcat Point-LP PCH Thermal Register bit definitions */ -#define WPT_TEMP_TSR 0x01ff /* Temp TS Reading */ -#define WPT_TSC_CPDE 0x01 /* Catastrophic Power-Down Enable */ -#define WPT_TSS_TSDSS 0x10 /* Thermal Sensor Dynamic Shutdown Status */ -#define WPT_TSS_GPES 0x08 /* GPE status */ -#define WPT_TSEL_ETS 0x01 /* Enable TS */ -#define WPT_TSEL_PLDB 0x80 /* TSEL Policy Lock-Down Bit */ -#define WPT_TL_TOL 0x000001FF /* T0 Level */ -#define WPT_TL_T1L 0x1ff00000 /* T1 Level */ -#define WPT_TL_TTEN 0x20000000 /* TT Enable */ - -static char driver_name[] = "Intel PCH thermal driver"; - -struct pch_thermal_device { - void __iomem *hw_base; - const struct pch_dev_ops *ops; - struct pci_dev *pdev; - struct thermal_zone_device *tzd; - int crt_trip_id; - unsigned long crt_temp; - int hot_trip_id; - unsigned long hot_temp; - int psv_trip_id; - unsigned long psv_temp; - bool bios_enabled; -}; - -#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 void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, - int *nr_trips) -{ - struct acpi_device *adev; - - ptd->psv_trip_id = -1; - - adev = ACPI_COMPANION(&ptd->pdev->dev); - if (adev) { - unsigned long long r; - acpi_status status; - - status = acpi_evaluate_integer(adev->handle, "_PSV", NULL, - &r); - if (ACPI_SUCCESS(status)) { - unsigned long trip_temp; - - trip_temp = DECI_KELVIN_TO_MILLICELSIUS(r); - if (trip_temp) { - ptd->psv_temp = trip_temp; - ptd->psv_trip_id = *nr_trips; - ++(*nr_trips); - } - } - } -} -#else -static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, - int *nr_trips) -{ - ptd->psv_trip_id = -1; - -} -#endif - -static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips) -{ - u8 tsel; - u16 trip_temp; - - *nr_trips = 0; - - /* Check if BIOS has already enabled thermal sensor */ - if (WPT_TSEL_ETS & readb(ptd->hw_base + WPT_TSEL)) { - ptd->bios_enabled = true; - goto read_trips; - } - - tsel = readb(ptd->hw_base + WPT_TSEL); - /* - * When TSEL's Policy Lock-Down bit is 1, TSEL become RO. - * If so, thermal sensor cannot enable. Bail out. - */ - if (tsel & WPT_TSEL_PLDB) { - dev_err(&ptd->pdev->dev, "Sensor can't be enabled\n"); - return -ENODEV; - } - - writeb(tsel|WPT_TSEL_ETS, ptd->hw_base + WPT_TSEL); - if (!(WPT_TSEL_ETS & readb(ptd->hw_base + WPT_TSEL))) { - dev_err(&ptd->pdev->dev, "Sensor can't be enabled\n"); - return -ENODEV; - } - -read_trips: - ptd->crt_trip_id = -1; - trip_temp = readw(ptd->hw_base + WPT_CTT); - trip_temp &= 0x1FF; - if (trip_temp) { - /* Resolution of 1/2 degree C and an offset of -50C */ - ptd->crt_temp = trip_temp * 1000 / 2 - 50000; - ptd->crt_trip_id = 0; - ++(*nr_trips); - } - - ptd->hot_trip_id = -1; - trip_temp = readw(ptd->hw_base + WPT_PHL); - trip_temp &= 0x1FF; - if (trip_temp) { - /* Resolution of 1/2 degree C and an offset of -50C */ - ptd->hot_temp = trip_temp * 1000 / 2 - 50000; - ptd->hot_trip_id = *nr_trips; - ++(*nr_trips); - } - - pch_wpt_add_acpi_psv_trip(ptd, nr_trips); - - return 0; -} - -static int pch_wpt_get_temp(struct pch_thermal_device *ptd, int *temp) -{ - u16 wpt_temp; - - wpt_temp = WPT_TEMP_TSR & readw(ptd->hw_base + WPT_TEMP); - - /* Resolution of 1/2 degree C and an offset of -50C */ - *temp = (wpt_temp * 1000 / 2 - 50000); - - return 0; -} - -static int pch_wpt_suspend(struct pch_thermal_device *ptd) -{ - u8 tsel; - - if (ptd->bios_enabled) - return 0; - - tsel = readb(ptd->hw_base + WPT_TSEL); - - writeb(tsel & 0xFE, ptd->hw_base + WPT_TSEL); - - return 0; -} - -static int pch_wpt_resume(struct pch_thermal_device *ptd) -{ - u8 tsel; - - if (ptd->bios_enabled) - return 0; - - tsel = readb(ptd->hw_base + WPT_TSEL); - - writeb(tsel | WPT_TSEL_ETS, ptd->hw_base + WPT_TSEL); - - return 0; -} - -struct pch_dev_ops { - int (*hw_init)(struct pch_thermal_device *ptd, int *nr_trips); - int (*get_temp)(struct pch_thermal_device *ptd, int *temp); - int (*suspend)(struct pch_thermal_device *ptd); - int (*resume)(struct pch_thermal_device *ptd); -}; - - -/* dev ops for Wildcat Point */ -static const struct pch_dev_ops pch_dev_ops_wpt = { - .hw_init = pch_wpt_init, - .get_temp = pch_wpt_get_temp, - .suspend = pch_wpt_suspend, - .resume = pch_wpt_resume, -}; - -static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp) -{ - struct pch_thermal_device *ptd = tzd->devdata; - - return ptd->ops->get_temp(ptd, temp); -} - -static int pch_get_trip_type(struct thermal_zone_device *tzd, int trip, - enum thermal_trip_type *type) -{ - struct pch_thermal_device *ptd = tzd->devdata; - - if (ptd->crt_trip_id == trip) - *type = THERMAL_TRIP_CRITICAL; - else if (ptd->hot_trip_id == trip) - *type = THERMAL_TRIP_HOT; - else if (ptd->psv_trip_id == trip) - *type = THERMAL_TRIP_PASSIVE; - else - return -EINVAL; - - return 0; -} - -static int pch_get_trip_temp(struct thermal_zone_device *tzd, int trip, int *temp) -{ - struct pch_thermal_device *ptd = tzd->devdata; - - if (ptd->crt_trip_id == trip) - *temp = ptd->crt_temp; - else if (ptd->hot_trip_id == trip) - *temp = ptd->hot_temp; - else if (ptd->psv_trip_id == trip) - *temp = ptd->psv_temp; - else - return -EINVAL; - - return 0; -} - -static struct thermal_zone_device_ops tzd_ops = { - .get_temp = pch_thermal_get_temp, - .get_trip_type = pch_get_trip_type, - .get_trip_temp = pch_get_trip_temp, -}; - -enum board_ids { - board_hsw, - board_wpt, - board_skl, - board_cnl, -}; - -static const struct board_info { - const char *name; - const struct pch_dev_ops *ops; -} board_info[] = { - [board_hsw] = { - .name = "pch_haswell", - .ops = &pch_dev_ops_wpt, - }, - [board_wpt] = { - .name = "pch_wildcat_point", - .ops = &pch_dev_ops_wpt, - }, - [board_skl] = { - .name = "pch_skylake", - .ops = &pch_dev_ops_wpt, - }, - [board_cnl] = { - .name = "pch_cannonlake", - .ops = &pch_dev_ops_wpt, - }, -}; - -static int intel_pch_thermal_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - enum board_ids board_id = id->driver_data; - const struct board_info *bi = &board_info[board_id]; - struct pch_thermal_device *ptd; - int err; - int nr_trips; - - ptd = devm_kzalloc(&pdev->dev, sizeof(*ptd), GFP_KERNEL); - if (!ptd) - return -ENOMEM; - - ptd->ops = bi->ops; - - pci_set_drvdata(pdev, ptd); - ptd->pdev = pdev; - - err = pci_enable_device(pdev); - if (err) { - dev_err(&pdev->dev, "failed to enable pci device\n"); - return err; - } - - err = pci_request_regions(pdev, driver_name); - if (err) { - dev_err(&pdev->dev, "failed to request pci region\n"); - goto error_disable; - } - - ptd->hw_base = pci_ioremap_bar(pdev, 0); - if (!ptd->hw_base) { - err = -ENOMEM; - dev_err(&pdev->dev, "failed to map mem base\n"); - goto error_release; - } - - err = ptd->ops->hw_init(ptd, &nr_trips); - if (err) - goto error_cleanup; - - ptd->tzd = thermal_zone_device_register(bi->name, nr_trips, 0, ptd, - &tzd_ops, NULL, 0, 0); - if (IS_ERR(ptd->tzd)) { - dev_err(&pdev->dev, "Failed to register thermal zone %s\n", - bi->name); - err = PTR_ERR(ptd->tzd); - goto error_cleanup; - } - - return 0; - -error_cleanup: - iounmap(ptd->hw_base); -error_release: - pci_release_regions(pdev); -error_disable: - pci_disable_device(pdev); - dev_err(&pdev->dev, "pci device failed to probe\n"); - return err; -} - -static void intel_pch_thermal_remove(struct pci_dev *pdev) -{ - struct pch_thermal_device *ptd = pci_get_drvdata(pdev); - - thermal_zone_device_unregister(ptd->tzd); - iounmap(ptd->hw_base); - pci_set_drvdata(pdev, NULL); - pci_release_region(pdev, 0); - pci_disable_device(pdev); -} - -static int intel_pch_thermal_suspend(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct pch_thermal_device *ptd = pci_get_drvdata(pdev); - - return ptd->ops->suspend(ptd); -} - -static int intel_pch_thermal_resume(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct pch_thermal_device *ptd = pci_get_drvdata(pdev); - - return ptd->ops->resume(ptd); -} - -static const struct pci_device_id intel_pch_thermal_id[] = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_1), - .driver_data = board_hsw, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_2), - .driver_data = board_hsw, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT), - .driver_data = board_wpt, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL), - .driver_data = board_skl, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL_H), - .driver_data = board_skl, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CNL), - .driver_data = board_cnl, }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CNL_H), - .driver_data = board_cnl, }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id); - -static const struct dev_pm_ops intel_pch_pm_ops = { - .suspend = intel_pch_thermal_suspend, - .resume = intel_pch_thermal_resume, -}; - -static struct pci_driver intel_pch_thermal_driver = { - .name = "intel_pch_thermal", - .id_table = intel_pch_thermal_id, - .probe = intel_pch_thermal_probe, - .remove = intel_pch_thermal_remove, - .driver.pm = &intel_pch_pm_ops, -}; - -module_pci_driver(intel_pch_thermal_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Intel PCH Thermal driver"); |