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msi-laptop: send out touchpad on/off key 

MSI BIOS's raw behavior is send out KEY_TOUCHPAD_TOGGLE key when user
pressed touchpad hotkey.

Actually, we can capture the real touchpad status by read 0xE4 EC address
on MSI netbook/notebook. So, add msi-laptop input device for send out
KEY_TOUCHPAD_ON or KEY_TOUCHPAD_OFF key when user pressed Fn+F3 touchpad
hotkey. It leave userland applications to know the real touchpad status.

Tested on MSI netbook U-100, U-115, U160(N051), U160DX, N014, N034
Tested on MSI notebook CR620

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Lee, Chun-Yi 2011-03-07 15:46:28 +08:00 committed by Matthew Garrett
parent 8941178efa
commit 143a4c0284
1 changed files with 79 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
drivers/platform/x86/msi-laptop.c
View File

@ -60,6 +60,8 @@
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/i8042.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#define MSI_DRIVER_VERSION "0.5"
@ -78,6 +80,9 @@
#define MSI_STANDARD_EC_SCM_LOAD_ADDRESS 0x2d
#define MSI_STANDARD_EC_SCM_LOAD_MASK (1 << 0)
#define MSI_STANDARD_EC_TOUCHPAD_ADDRESS 0xe4
#define MSI_STANDARD_EC_TOUCHPAD_MASK (1 << 4)
static int msi_laptop_resume(struct platform_device *device);
#define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS 0x2f
@ -90,6 +95,14 @@ static int auto_brightness;
module_param(auto_brightness, int, 0);
MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
static const struct key_entry msi_laptop_keymap[] = {
{KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} }, /* Touch Pad On */
{KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
{KE_END, 0}
};
static struct input_dev *msi_laptop_input_dev;
static bool old_ec_model;
static int wlan_s, bluetooth_s, threeg_s;
static int threeg_exists;
@ -605,6 +618,21 @@ static void msi_update_rfkill(struct work_struct *ignored)
}
static DECLARE_DELAYED_WORK(msi_rfkill_work, msi_update_rfkill);
static void msi_send_touchpad_key(struct work_struct *ignored)
{
u8 rdata;
int result;
result = ec_read(MSI_STANDARD_EC_TOUCHPAD_ADDRESS, &rdata);
if (result < 0)
return;
sparse_keymap_report_event(msi_laptop_input_dev,
(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
}
static DECLARE_DELAYED_WORK(msi_touchpad_work, msi_send_touchpad_key);
static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
struct serio *port)
{
@ -613,12 +641,17 @@ static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
if (str & 0x20)
return false;
/* 0x54 wwan, 0x62 bluetooth, 0x76 wlan*/
/* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
if (unlikely(data == 0xe0)) {
extended = true;
return false;
} else if (unlikely(extended)) {
extended = false;
switch (data) {
case 0xE4:
schedule_delayed_work(&msi_touchpad_work,
round_jiffies_relative(0.5 * HZ));
break;
case 0x54:
case 0x62:
case 0x76:
@ -626,7 +659,6 @@ static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
round_jiffies_relative(0.5 * HZ));
break;
}
extended = false;
}
return false;
@ -731,6 +763,42 @@ static int msi_laptop_resume(struct platform_device *device)
return 0;
}
static int __init msi_laptop_input_setup(void)
{
int err;
msi_laptop_input_dev = input_allocate_device();
if (!msi_laptop_input_dev)
return -ENOMEM;
msi_laptop_input_dev->name = "MSI Laptop hotkeys";
msi_laptop_input_dev->phys = "msi-laptop/input0";
msi_laptop_input_dev->id.bustype = BUS_HOST;
err = sparse_keymap_setup(msi_laptop_input_dev,
msi_laptop_keymap, NULL);
if (err)
goto err_free_dev;
err = input_register_device(msi_laptop_input_dev);
if (err)
goto err_free_keymap;
return 0;
err_free_keymap:
sparse_keymap_free(msi_laptop_input_dev);
err_free_dev:
input_free_device(msi_laptop_input_dev);
return err;
}
static void msi_laptop_input_destroy(void)
{
sparse_keymap_free(msi_laptop_input_dev);
input_unregister_device(msi_laptop_input_dev);
}
static int load_scm_model_init(struct platform_device *sdev)
{
u8 data;
@ -759,6 +827,11 @@ static int load_scm_model_init(struct platform_device *sdev)
if (result < 0)
goto fail_rfkill;
/* setup input device */
result = msi_laptop_input_setup();
if (result)
goto fail_input;
result = i8042_install_filter(msi_laptop_i8042_filter);
if (result) {
printk(KERN_ERR
@ -769,6 +842,9 @@ static int load_scm_model_init(struct platform_device *sdev)
return 0;
fail_filter:
msi_laptop_input_destroy();
fail_input:
rfkill_cleanup();
fail_rfkill:
@ -886,6 +962,7 @@ static void __exit msi_cleanup(void)
{
if (load_scm_model) {
i8042_remove_filter(msi_laptop_i8042_filter);
msi_laptop_input_destroy();
cancel_delayed_work_sync(&msi_rfkill_work);
rfkill_cleanup();
}