// SPDX-License-Identifier: GPL-2.0-or-later /* * hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS * * Copyright (C) 2007-2008 Yan Burman * Copyright (C) 2008 Eric Piel * Copyright (C) 2008-2009 Pavel Machek */ #define pr_fmt(fmt) … #include <linux/kernel.h> #include <linux/init.h> #include <linux/dmi.h> #include <linux/module.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/wait.h> #include <linux/poll.h> #include <linux/freezer.h> #include <linux/uaccess.h> #include <linux/leds.h> #include <linux/atomic.h> #include <linux/acpi.h> #include <linux/i8042.h> #include <linux/serio.h> #include "../../../misc/lis3lv02d/lis3lv02d.h" /* Delayed LEDs infrastructure ------------------------------------ */ /* Special LED class that can defer work */ struct delayed_led_classdev { … }; static inline void delayed_set_status_worker(struct work_struct *work) { … } static inline void delayed_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { … } /* HP-specific accelerometer driver ------------------------------------ */ /* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id * HPQ6000 sends through the keyboard bus */ #define ACCEL_1 … #define ACCEL_2 … #define ACCEL_3 … #define ACCEL_4 … /* For automatic insertion of the module */ static const struct acpi_device_id lis3lv02d_device_ids[] = …; MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids); /** * lis3lv02d_acpi_init - initialize the device for ACPI * @lis3: pointer to the device struct * * Returns 0 on success. */ static int lis3lv02d_acpi_init(struct lis3lv02d *lis3) { … } /** * lis3lv02d_acpi_read - ACPI ALRD method: read a register * @lis3: pointer to the device struct * @reg: the register to read * @ret: result of the operation * * Returns 0 on success. */ static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret) { … } /** * lis3lv02d_acpi_write - ACPI ALWR method: write to a register * @lis3: pointer to the device struct * @reg: the register to write to * @val: the value to write * * Returns 0 on success. */ static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val) { … } static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi) { … } /* Represents, for each axis seen by userspace, the corresponding hw axis (+1). * If the value is negative, the opposite of the hw value is used. */ #define DEFINE_CONV(name, x, y, z) … DEFINE_CONV(normal, 1, 2, 3); DEFINE_CONV(y_inverted, 1, -2, 3); DEFINE_CONV(x_inverted, -1, 2, 3); DEFINE_CONV(x_inverted_usd, -1, 2, -3); DEFINE_CONV(z_inverted, 1, 2, -3); DEFINE_CONV(xy_swap, 2, 1, 3); DEFINE_CONV(xy_rotated_left, -2, 1, 3); DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3); DEFINE_CONV(xy_swap_inverted, -2, -1, 3); DEFINE_CONV(xy_rotated_right, 2, -1, 3); DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3); #define AXIS_DMI_MATCH(_ident, _name, _axis) … #define AXIS_DMI_MATCH2(_ident, _class1, _name1, \ _class2, _name2, \ _axis) … static const struct dmi_system_id lis3lv02d_dmi_ids[] = …; static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value) { … } static struct delayed_led_classdev hpled_led = …; static bool hp_accel_i8042_filter(unsigned char data, unsigned char str, struct serio *port) { … } static int lis3lv02d_probe(struct platform_device *device) { … } static void lis3lv02d_remove(struct platform_device *device) { … } static int __maybe_unused lis3lv02d_suspend(struct device *dev) { … } static int __maybe_unused lis3lv02d_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume); /* For the HP MDPS aka 3D Driveguard */ static struct platform_driver lis3lv02d_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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