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platform/x86: fujitsu-laptop: Define constants for backlight power control 

Use named constants instead of integers in call_fext_func() invocations
related to backlight power control in order to more clearly convey the
intent of each call.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Michał Kępień 2018-02-20 06:24:53 +01:00 committed by Darren Hart (VMware)
parent 7e6f97959a
commit 2f60efa1e4
1 changed files with 11 additions and 3 deletions
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14
drivers/platform/x86/fujitsu-laptop.c
View File

@ -101,6 +101,11 @@
#define ECO_LED 0x10000
#define ECO_LED_ON 0x80000
/* FUNC interface - backlight power control */
#define BACKLIGHT_PARAM_POWER 0x4
#define BACKLIGHT_OFF 0x3
#define BACKLIGHT_ON 0x0
/* Hotkey details */
#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
#define KEY2_CODE 0x411
@ -257,9 +262,11 @@ static int bl_update_status(struct backlight_device *b)
if (fext) {
if (b->props.power == FB_BLANK_POWERDOWN)
call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
else
call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
}
return set_lcd_level(device, b->props.brightness);
@ -818,7 +825,8 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
/* Sync backlight power status */
if (fujitsu_bl && fujitsu_bl->bl_device &&
acpi_video_get_backlight_type() == acpi_backlight_vendor) {
if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,
BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF)
fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
else
fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;