437 строки
13 KiB
C
437 строки
13 KiB
C
/*
|
|
* 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
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " 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"
|
|
|
|
#define DRIVER_NAME "hp_accel"
|
|
#define ACPI_MDPS_CLASS "accelerometer"
|
|
|
|
/* Delayed LEDs infrastructure ------------------------------------ */
|
|
|
|
/* Special LED class that can defer work */
|
|
struct delayed_led_classdev {
|
|
struct led_classdev led_classdev;
|
|
struct work_struct work;
|
|
enum led_brightness new_brightness;
|
|
|
|
unsigned int led; /* For driver */
|
|
void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
|
|
};
|
|
|
|
static inline void delayed_set_status_worker(struct work_struct *work)
|
|
{
|
|
struct delayed_led_classdev *data =
|
|
container_of(work, struct delayed_led_classdev, work);
|
|
|
|
data->set_brightness(data, data->new_brightness);
|
|
}
|
|
|
|
static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
struct delayed_led_classdev *data = container_of(led_cdev,
|
|
struct delayed_led_classdev, led_classdev);
|
|
data->new_brightness = brightness;
|
|
schedule_work(&data->work);
|
|
}
|
|
|
|
/* 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 0x25
|
|
#define ACCEL_2 0x26
|
|
#define ACCEL_3 0x27
|
|
#define ACCEL_4 0x28
|
|
|
|
/* For automatic insertion of the module */
|
|
static const struct acpi_device_id lis3lv02d_device_ids[] = {
|
|
{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
|
|
{"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
|
|
{"HPQ6007", 0}, /* HP Mobile Data Protection System PNP */
|
|
{"", 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
|
|
|
|
|
|
/**
|
|
* lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
|
|
* @lis3: pointer to the device struct
|
|
*
|
|
* Returns 0 on success.
|
|
*/
|
|
static int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
|
|
{
|
|
struct acpi_device *dev = lis3->bus_priv;
|
|
if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
|
|
NULL, NULL) != AE_OK)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
struct acpi_device *dev = lis3->bus_priv;
|
|
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
|
|
struct acpi_object_list args = { 1, &arg0 };
|
|
unsigned long long lret;
|
|
acpi_status status;
|
|
|
|
arg0.integer.value = reg;
|
|
|
|
status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
|
|
*ret = lret;
|
|
return (status != AE_OK) ? -EINVAL : 0;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
struct acpi_device *dev = lis3->bus_priv;
|
|
unsigned long long ret; /* Not used when writting */
|
|
union acpi_object in_obj[2];
|
|
struct acpi_object_list args = { 2, in_obj };
|
|
|
|
in_obj[0].type = ACPI_TYPE_INTEGER;
|
|
in_obj[0].integer.value = reg;
|
|
in_obj[1].type = ACPI_TYPE_INTEGER;
|
|
in_obj[1].integer.value = val;
|
|
|
|
if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
|
|
{
|
|
lis3_dev.ac = *((union axis_conversion *)dmi->driver_data);
|
|
pr_info("hardware type %s found\n", dmi->ident);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* 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) \
|
|
static union axis_conversion lis3lv02d_axis_##name = \
|
|
{ .as_array = { 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(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) { \
|
|
.ident = _ident, \
|
|
.callback = lis3lv02d_dmi_matched, \
|
|
.matches = { \
|
|
DMI_MATCH(DMI_PRODUCT_NAME, _name) \
|
|
}, \
|
|
.driver_data = &lis3lv02d_axis_##_axis \
|
|
}
|
|
|
|
#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
|
|
_class2, _name2, \
|
|
_axis) { \
|
|
.ident = _ident, \
|
|
.callback = lis3lv02d_dmi_matched, \
|
|
.matches = { \
|
|
DMI_MATCH(DMI_##_class1, _name1), \
|
|
DMI_MATCH(DMI_##_class2, _name2), \
|
|
}, \
|
|
.driver_data = &lis3lv02d_axis_##_axis \
|
|
}
|
|
static const struct dmi_system_id lis3lv02d_dmi_ids[] = {
|
|
/* product names are truncated to match all kinds of a same model */
|
|
AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
|
|
AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
|
|
AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
|
|
AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
|
|
AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
|
|
AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
|
|
AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
|
|
AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
|
|
AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
|
|
AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
|
|
AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
|
|
AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
|
|
AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
|
|
AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
|
|
AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
|
|
AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
|
|
AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
|
|
AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
|
|
AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
|
|
/* Intel-based HP Pavilion dv5 */
|
|
AXIS_DMI_MATCH2("HPDV5_I",
|
|
PRODUCT_NAME, "HP Pavilion dv5",
|
|
BOARD_NAME, "3603",
|
|
x_inverted),
|
|
/* AMD-based HP Pavilion dv5 */
|
|
AXIS_DMI_MATCH2("HPDV5_A",
|
|
PRODUCT_NAME, "HP Pavilion dv5",
|
|
BOARD_NAME, "3600",
|
|
y_inverted),
|
|
AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
|
|
AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
|
|
AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
|
|
AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
|
|
AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
|
|
AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
|
|
AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
|
|
AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
|
|
AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
|
|
AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
|
|
AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
|
|
AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
|
|
AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
|
|
AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
|
|
AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
|
|
{ NULL, }
|
|
/* Laptop models without axis info (yet):
|
|
* "NC6910" "HP Compaq 6910"
|
|
* "NC2400" "HP Compaq nc2400"
|
|
* "NX74x0" "HP Compaq nx74"
|
|
* "NX6325" "HP Compaq nx6325"
|
|
* "NC4400" "HP Compaq nc4400"
|
|
*/
|
|
};
|
|
|
|
static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
|
|
{
|
|
struct acpi_device *dev = lis3_dev.bus_priv;
|
|
unsigned long long ret; /* Not used when writing */
|
|
union acpi_object in_obj[1];
|
|
struct acpi_object_list args = { 1, in_obj };
|
|
|
|
in_obj[0].type = ACPI_TYPE_INTEGER;
|
|
in_obj[0].integer.value = !!value;
|
|
|
|
acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
|
|
}
|
|
|
|
static struct delayed_led_classdev hpled_led = {
|
|
.led_classdev = {
|
|
.name = "hp::hddprotect",
|
|
.default_trigger = "none",
|
|
.brightness_set = delayed_sysfs_set,
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
},
|
|
.set_brightness = hpled_set,
|
|
};
|
|
|
|
static acpi_status
|
|
lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
|
|
{
|
|
if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
|
|
struct acpi_resource_extended_irq *irq;
|
|
u32 *device_irq = context;
|
|
|
|
irq = &resource->data.extended_irq;
|
|
*device_irq = irq->interrupts[0];
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
static void lis3lv02d_enum_resources(struct acpi_device *device)
|
|
{
|
|
acpi_status status;
|
|
|
|
status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
|
|
lis3lv02d_get_resource, &lis3_dev.irq);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
|
|
}
|
|
|
|
static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
|
|
struct serio *port)
|
|
{
|
|
static bool extended;
|
|
|
|
if (str & I8042_STR_AUXDATA)
|
|
return false;
|
|
|
|
if (data == 0xe0) {
|
|
extended = true;
|
|
return true;
|
|
} else if (unlikely(extended)) {
|
|
extended = false;
|
|
|
|
switch (data) {
|
|
case ACCEL_1:
|
|
case ACCEL_2:
|
|
case ACCEL_3:
|
|
case ACCEL_4:
|
|
return true;
|
|
default:
|
|
serio_interrupt(port, 0xe0, 0);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int lis3lv02d_add(struct acpi_device *device)
|
|
{
|
|
int ret;
|
|
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
lis3_dev.bus_priv = device;
|
|
lis3_dev.init = lis3lv02d_acpi_init;
|
|
lis3_dev.read = lis3lv02d_acpi_read;
|
|
lis3_dev.write = lis3lv02d_acpi_write;
|
|
strcpy(acpi_device_name(device), DRIVER_NAME);
|
|
strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
|
|
device->driver_data = &lis3_dev;
|
|
|
|
/* obtain IRQ number of our device from ACPI */
|
|
lis3lv02d_enum_resources(device);
|
|
|
|
/* If possible use a "standard" axes order */
|
|
if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
|
|
pr_info("Using custom axes %d,%d,%d\n",
|
|
lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
|
|
} else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
|
|
pr_info("laptop model unknown, using default axes configuration\n");
|
|
lis3_dev.ac = lis3lv02d_axis_normal;
|
|
}
|
|
|
|
/* call the core layer do its init */
|
|
ret = lis3lv02d_init_device(&lis3_dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* filter to remove HPQ6000 accelerometer data
|
|
* from keyboard bus stream */
|
|
if (strstr(dev_name(&device->dev), "HPQ6000"))
|
|
i8042_install_filter(hp_accel_i8042_filter);
|
|
|
|
INIT_WORK(&hpled_led.work, delayed_set_status_worker);
|
|
ret = led_classdev_register(NULL, &hpled_led.led_classdev);
|
|
if (ret) {
|
|
lis3lv02d_joystick_disable(&lis3_dev);
|
|
lis3lv02d_poweroff(&lis3_dev);
|
|
flush_work(&hpled_led.work);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lis3lv02d_remove(struct acpi_device *device)
|
|
{
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
i8042_remove_filter(hp_accel_i8042_filter);
|
|
lis3lv02d_joystick_disable(&lis3_dev);
|
|
lis3lv02d_poweroff(&lis3_dev);
|
|
|
|
led_classdev_unregister(&hpled_led.led_classdev);
|
|
flush_work(&hpled_led.work);
|
|
|
|
return lis3lv02d_remove_fs(&lis3_dev);
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int lis3lv02d_suspend(struct device *dev)
|
|
{
|
|
/* make sure the device is off when we suspend */
|
|
lis3lv02d_poweroff(&lis3_dev);
|
|
return 0;
|
|
}
|
|
|
|
static int lis3lv02d_resume(struct device *dev)
|
|
{
|
|
lis3lv02d_poweron(&lis3_dev);
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
|
|
#define HP_ACCEL_PM (&hp_accel_pm)
|
|
#else
|
|
#define HP_ACCEL_PM NULL
|
|
#endif
|
|
|
|
/* For the HP MDPS aka 3D Driveguard */
|
|
static struct acpi_driver lis3lv02d_driver = {
|
|
.name = DRIVER_NAME,
|
|
.class = ACPI_MDPS_CLASS,
|
|
.ids = lis3lv02d_device_ids,
|
|
.ops = {
|
|
.add = lis3lv02d_add,
|
|
.remove = lis3lv02d_remove,
|
|
},
|
|
.drv.pm = HP_ACCEL_PM,
|
|
};
|
|
module_acpi_driver(lis3lv02d_driver);
|
|
|
|
MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
|
|
MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
|
|
MODULE_LICENSE("GPL");
|