backlight: Allow properties to be passed at registration
Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 789240d..def4841 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -924,6 +924,7 @@
u32 hci_result;
bool bt_present;
int ret = 0;
+ struct backlight_properties props;
if (acpi_disabled)
return -ENODEV;
@@ -974,10 +975,12 @@
}
}
+ props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
toshiba_backlight_device = backlight_device_register("toshiba",
- &toshiba_acpi.p_dev->dev,
- NULL,
- &toshiba_backlight_data);
+ &toshiba_acpi.p_dev->dev,
+ NULL,
+ &toshiba_backlight_data,
+ &props);
if (IS_ERR(toshiba_backlight_device)) {
ret = PTR_ERR(toshiba_backlight_device);
@@ -986,7 +989,6 @@
toshiba_acpi_exit();
return ret;
}
- toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
/* Register rfkill switch for Bluetooth */
if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {