diff options
Diffstat (limited to 'drivers/video/backlight/pwm_bl.c')
| -rw-r--r-- | drivers/video/backlight/pwm_bl.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 53b8ceea9bde..20d379ac8440 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/video/backlight/pwm_bl.c * * simple PWM based backlight control, board code has to setup * 1) pin configuration so PWM waveforms can output * 2) platform_data being correctly configured - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> @@ -155,21 +152,6 @@ static const struct backlight_ops pwm_backlight_ops = { #ifdef CONFIG_OF #define PWM_LUMINANCE_SCALE 10000 /* luminance scale */ -/* An integer based power function */ -static u64 int_pow(u64 base, int exp) -{ - u64 result = 1; - - while (exp) { - if (exp & 1) - result *= base; - exp >>= 1; - base *= base; - } - - return result; -} - /* * CIE lightness to PWM conversion. * |