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path: root/drivers/platform/x86/dell-laptop.c
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Diffstat (limited to 'drivers/platform/x86/dell-laptop.c')
-rw-r--r--drivers/platform/x86/dell-laptop.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index f31fa4efa72..a43cfd906c6 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -60,6 +60,22 @@ struct calling_interface_structure {
struct calling_interface_token tokens[];
} __packed;
+struct quirk_entry {
+ u8 touchpad_led;
+};
+
+static struct quirk_entry *quirks;
+
+static struct quirk_entry quirk_dell_vostro_v130 = {
+ .touchpad_led = 1,
+};
+
+static int dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
static int da_command_address;
static int da_command_code;
static int da_num_tokens;
@@ -149,6 +165,27 @@ static struct dmi_system_id __devinitdata dell_blacklist[] = {
{}
};
+static struct dmi_system_id __devinitdata dell_quirks[] = {
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro V130",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro V131",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+};
+
static struct calling_interface_buffer *buffer;
static struct page *bufferpage;
static DEFINE_MUTEX(buffer_mutex);
@@ -552,6 +589,44 @@ static const struct backlight_ops dell_ops = {
.update_status = dell_send_intensity,
};
+static void touchpad_led_on()
+{
+ int command = 0x97;
+ char data = 1;
+ i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_off()
+{
+ int command = 0x97;
+ char data = 2;
+ i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value > 0)
+ touchpad_led_on();
+ else
+ touchpad_led_off();
+}
+
+static struct led_classdev touchpad_led = {
+ .name = "dell-laptop::touchpad",
+ .brightness_set = touchpad_led_set,
+};
+
+static int __devinit touchpad_led_init(struct device *dev)
+{
+ return led_classdev_register(dev, &touchpad_led);
+}
+
+static void touchpad_led_exit(void)
+{
+ led_classdev_unregister(&touchpad_led);
+}
+
static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
struct serio *port)
{
@@ -584,6 +659,10 @@ static int __init dell_init(void)
if (!dmi_check_system(dell_device_table))
return -ENODEV;
+ quirks = NULL;
+ /* find if this machine support other functions */
+ dmi_check_system(dell_quirks);
+
dmi_walk(find_tokens, NULL);
if (!da_tokens) {
@@ -626,6 +705,9 @@ static int __init dell_init(void)
goto fail_filter;
}
+ if (quirks && quirks->touchpad_led)
+ touchpad_led_init(&platform_device->dev);
+
dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
if (dell_laptop_dir != NULL)
debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
@@ -692,6 +774,8 @@ fail_platform_driver:
static void __exit dell_exit(void)
{
debugfs_remove_recursive(dell_laptop_dir);
+ if (quirks && quirks->touchpad_led)
+ touchpad_led_exit();
i8042_remove_filter(dell_laptop_i8042_filter);
cancel_delayed_work_sync(&dell_rfkill_work);
backlight_device_unregister(dell_backlight_device);