forked from Minki/linux
51fac8388a
The second argument of ACPI driver .remove() operation is only used by the ACPI processor driver and the value passed to that driver through it is always available from the given struct acpi_device object's removal_type field. For this reason, the second ACPI driver .remove() argument is in fact useless, so drop it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
390 lines
12 KiB
C
390 lines
12 KiB
C
/*
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* hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS
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*
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* Copyright (C) 2007-2008 Yan Burman
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* Copyright (C) 2008 Eric Piel
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* Copyright (C) 2008-2009 Pavel Machek
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/dmi.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/wait.h>
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#include <linux/poll.h>
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#include <linux/freezer.h>
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#include <linux/uaccess.h>
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#include <linux/leds.h>
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#include <linux/atomic.h>
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#include <acpi/acpi_drivers.h>
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#include "../../misc/lis3lv02d/lis3lv02d.h"
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#define DRIVER_NAME "hp_accel"
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#define ACPI_MDPS_CLASS "accelerometer"
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/* Delayed LEDs infrastructure ------------------------------------ */
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/* Special LED class that can defer work */
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struct delayed_led_classdev {
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struct led_classdev led_classdev;
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struct work_struct work;
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enum led_brightness new_brightness;
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unsigned int led; /* For driver */
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void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
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};
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static inline void delayed_set_status_worker(struct work_struct *work)
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{
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struct delayed_led_classdev *data =
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container_of(work, struct delayed_led_classdev, work);
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data->set_brightness(data, data->new_brightness);
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}
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static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct delayed_led_classdev *data = container_of(led_cdev,
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struct delayed_led_classdev, led_classdev);
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data->new_brightness = brightness;
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schedule_work(&data->work);
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}
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/* HP-specific accelerometer driver ------------------------------------ */
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/* For automatic insertion of the module */
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static struct acpi_device_id lis3lv02d_device_ids[] = {
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{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
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{"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
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/**
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* lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
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* @lis3: pointer to the device struct
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*
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* Returns 0 on success.
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*/
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int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
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{
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struct acpi_device *dev = lis3->bus_priv;
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if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
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NULL, NULL) != AE_OK)
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return -EINVAL;
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return 0;
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}
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/**
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* lis3lv02d_acpi_read - ACPI ALRD method: read a register
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* @lis3: pointer to the device struct
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* @reg: the register to read
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* @ret: result of the operation
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*
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* Returns 0 on success.
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*/
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int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
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{
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struct acpi_device *dev = lis3->bus_priv;
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union acpi_object arg0 = { ACPI_TYPE_INTEGER };
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struct acpi_object_list args = { 1, &arg0 };
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unsigned long long lret;
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acpi_status status;
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arg0.integer.value = reg;
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status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
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*ret = lret;
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return (status != AE_OK) ? -EINVAL : 0;
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}
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/**
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* lis3lv02d_acpi_write - ACPI ALWR method: write to a register
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* @lis3: pointer to the device struct
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* @reg: the register to write to
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* @val: the value to write
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*
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* Returns 0 on success.
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*/
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int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
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{
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struct acpi_device *dev = lis3->bus_priv;
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unsigned long long ret; /* Not used when writting */
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union acpi_object in_obj[2];
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struct acpi_object_list args = { 2, in_obj };
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in_obj[0].type = ACPI_TYPE_INTEGER;
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in_obj[0].integer.value = reg;
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in_obj[1].type = ACPI_TYPE_INTEGER;
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in_obj[1].integer.value = val;
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if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
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return -EINVAL;
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return 0;
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}
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static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
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{
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lis3_dev.ac = *((union axis_conversion *)dmi->driver_data);
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pr_info("hardware type %s found\n", dmi->ident);
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return 1;
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}
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/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
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* If the value is negative, the opposite of the hw value is used. */
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#define DEFINE_CONV(name, x, y, z) \
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static union axis_conversion lis3lv02d_axis_##name = \
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{ .as_array = { x, y, z } }
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DEFINE_CONV(normal, 1, 2, 3);
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DEFINE_CONV(y_inverted, 1, -2, 3);
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DEFINE_CONV(x_inverted, -1, 2, 3);
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DEFINE_CONV(z_inverted, 1, 2, -3);
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DEFINE_CONV(xy_swap, 2, 1, 3);
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DEFINE_CONV(xy_rotated_left, -2, 1, 3);
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DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
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DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
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DEFINE_CONV(xy_rotated_right, 2, -1, 3);
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DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3);
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#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
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.ident = _ident, \
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.callback = lis3lv02d_dmi_matched, \
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.matches = { \
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DMI_MATCH(DMI_PRODUCT_NAME, _name) \
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}, \
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.driver_data = &lis3lv02d_axis_##_axis \
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}
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#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
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_class2, _name2, \
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_axis) { \
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.ident = _ident, \
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.callback = lis3lv02d_dmi_matched, \
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.matches = { \
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DMI_MATCH(DMI_##_class1, _name1), \
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DMI_MATCH(DMI_##_class2, _name2), \
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}, \
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.driver_data = &lis3lv02d_axis_##_axis \
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}
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static struct dmi_system_id lis3lv02d_dmi_ids[] = {
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/* product names are truncated to match all kinds of a same model */
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AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
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AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
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AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
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AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
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AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
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AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
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AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
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AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
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AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
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AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
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AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
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AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
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AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
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AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
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AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
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AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
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AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
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AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
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AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
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/* Intel-based HP Pavilion dv5 */
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AXIS_DMI_MATCH2("HPDV5_I",
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PRODUCT_NAME, "HP Pavilion dv5",
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BOARD_NAME, "3603",
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x_inverted),
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/* AMD-based HP Pavilion dv5 */
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AXIS_DMI_MATCH2("HPDV5_A",
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PRODUCT_NAME, "HP Pavilion dv5",
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BOARD_NAME, "3600",
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y_inverted),
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AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
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AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
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AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
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AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
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AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
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AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
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AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
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AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
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AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
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AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
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AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
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AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
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AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
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AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
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{ NULL, }
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/* Laptop models without axis info (yet):
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* "NC6910" "HP Compaq 6910"
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* "NC2400" "HP Compaq nc2400"
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* "NX74x0" "HP Compaq nx74"
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* "NX6325" "HP Compaq nx6325"
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* "NC4400" "HP Compaq nc4400"
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*/
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};
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static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
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{
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struct acpi_device *dev = lis3_dev.bus_priv;
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unsigned long long ret; /* Not used when writing */
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union acpi_object in_obj[1];
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struct acpi_object_list args = { 1, in_obj };
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in_obj[0].type = ACPI_TYPE_INTEGER;
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in_obj[0].integer.value = !!value;
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acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
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}
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static struct delayed_led_classdev hpled_led = {
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.led_classdev = {
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.name = "hp::hddprotect",
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.default_trigger = "none",
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.brightness_set = delayed_sysfs_set,
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.flags = LED_CORE_SUSPENDRESUME,
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},
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.set_brightness = hpled_set,
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};
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static acpi_status
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lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
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{
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if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
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struct acpi_resource_extended_irq *irq;
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u32 *device_irq = context;
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irq = &resource->data.extended_irq;
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*device_irq = irq->interrupts[0];
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}
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return AE_OK;
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}
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static void lis3lv02d_enum_resources(struct acpi_device *device)
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{
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acpi_status status;
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status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
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lis3lv02d_get_resource, &lis3_dev.irq);
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if (ACPI_FAILURE(status))
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printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
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}
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static int lis3lv02d_add(struct acpi_device *device)
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{
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int ret;
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if (!device)
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return -EINVAL;
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lis3_dev.bus_priv = device;
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lis3_dev.init = lis3lv02d_acpi_init;
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lis3_dev.read = lis3lv02d_acpi_read;
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lis3_dev.write = lis3lv02d_acpi_write;
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strcpy(acpi_device_name(device), DRIVER_NAME);
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strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
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device->driver_data = &lis3_dev;
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/* obtain IRQ number of our device from ACPI */
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lis3lv02d_enum_resources(device);
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/* If possible use a "standard" axes order */
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if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
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pr_info("Using custom axes %d,%d,%d\n",
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lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
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} else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
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pr_info("laptop model unknown, using default axes configuration\n");
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lis3_dev.ac = lis3lv02d_axis_normal;
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}
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/* call the core layer do its init */
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ret = lis3lv02d_init_device(&lis3_dev);
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if (ret)
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return ret;
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INIT_WORK(&hpled_led.work, delayed_set_status_worker);
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ret = led_classdev_register(NULL, &hpled_led.led_classdev);
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if (ret) {
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lis3lv02d_joystick_disable(&lis3_dev);
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lis3lv02d_poweroff(&lis3_dev);
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flush_work(&hpled_led.work);
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return ret;
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}
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return ret;
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}
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static int lis3lv02d_remove(struct acpi_device *device)
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{
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if (!device)
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return -EINVAL;
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lis3lv02d_joystick_disable(&lis3_dev);
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lis3lv02d_poweroff(&lis3_dev);
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led_classdev_unregister(&hpled_led.led_classdev);
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flush_work(&hpled_led.work);
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return lis3lv02d_remove_fs(&lis3_dev);
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}
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#ifdef CONFIG_PM_SLEEP
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static int lis3lv02d_suspend(struct device *dev)
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{
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/* make sure the device is off when we suspend */
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lis3lv02d_poweroff(&lis3_dev);
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return 0;
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}
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static int lis3lv02d_resume(struct device *dev)
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{
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return lis3lv02d_poweron(&lis3_dev);
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}
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static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
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#define HP_ACCEL_PM (&hp_accel_pm)
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#else
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#define HP_ACCEL_PM NULL
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#endif
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/* For the HP MDPS aka 3D Driveguard */
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static struct acpi_driver lis3lv02d_driver = {
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.name = DRIVER_NAME,
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.class = ACPI_MDPS_CLASS,
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.ids = lis3lv02d_device_ids,
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.ops = {
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.add = lis3lv02d_add,
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.remove = lis3lv02d_remove,
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},
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.drv.pm = HP_ACCEL_PM,
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};
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module_acpi_driver(lis3lv02d_driver);
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MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
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MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
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MODULE_LICENSE("GPL");
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