omapfb: lcd_ams_delta: add support for contrast control - linux-dev - Linux kernel development work

diff options

author	Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>	2009-12-11 13:21:46 +0000
committer	Tomi Valkeinen <tomi.valkeinen@nokia.com>	2010-02-12 12:46:07 +0200
commit	e721032785b72afbc3da14c5525ca570bc2ed108 (patch)
tree	0830ae37ea08a1902a0efc7a8b9473cff6674d85 /include/linux/stackprotector.h
parent	omapfb: Fix 12-bit display (RGB444 color mode) handling (diff)

omapfb: lcd_ams_delta: add support for contrast control

The patch extends the Amstrad Delta LCD panel driver with optional support for changing contrast using standard LCD class device API instead of setting it silently to a default value at panel enable. It also allows for lowering power consumption by turning off OMAP_PWL_CLK_ENABLE via lcd_ops.set_power callback. Created and tested against linux-omap for-next, commit 155a75d9725e66e5ec8a383822957dee52427057. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

Diffstat (limited to 'include/linux/stackprotector.h')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2018 ARM Limited */ #ifndef __ASM_VDSO_GETTIMEOFDAY_H #define __ASM_VDSO_GETTIMEOFDAY_H #ifndef __ASSEMBLY__ #include <asm/barrier.h> #include <asm/unistd.h> #define VDSO_HAS_CLOCK_GETRES 1 static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) { register struct timezone *tz asm("x1") = _tz; register struct __kernel_old_timeval *tv asm("x0") = _tv; register long ret asm ("x0"); register long nr asm("x8") = __NR_gettimeofday; asm volatile( " svc #0\n" : "=r" (ret) : "r" (tv), "r" (tz), "r" (nr) : "memory"); return ret; } static __always_inline long clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { register struct __kernel_timespec *ts asm("x1") = _ts; register clockid_t clkid asm("x0") = _clkid; register long ret asm ("x0"); register long nr asm("x8") = __NR_clock_gettime; asm volatile( " svc #0\n" : "=r" (ret) : "r" (clkid), "r" (ts), "r" (nr) : "memory"); return ret; } static __always_inline int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { register struct __kernel_timespec *ts asm("x1") = _ts; register clockid_t clkid asm("x0") = _clkid; register long ret asm ("x0"); register long nr asm("x8") = __NR_clock_getres; asm volatile( " svc #0\n" : "=r" (ret) : "r" (clkid), "r" (ts), "r" (nr) : "memory"); return ret; } static __always_inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd) { u64 res; /* * Core checks for mode already, so this raced against a concurrent * update. Return something. Core will do another round and then * see the mode change and fallback to the syscall. */ if (clock_mode == VDSO_CLOCKMODE_NONE) return 0; /* * This isb() is required to prevent that the counter value * is speculated. */ isb(); asm volatile("mrs %0, cntvct_el0" : "=r" (res) :: "memory"); arch_counter_enforce_ordering(res); return res; } static __always_inline const struct vdso_data *__arch_get_vdso_data(void) { return _vdso_data; } #ifdef CONFIG_TIME_NS static __always_inline const struct vdso_data *__arch_get_timens_vdso_data(void) { return _timens_data; } #endif #endif /* !__ASSEMBLY__ */ #endif /* __ASM_VDSO_GETTIMEOFDAY_H */


context:
space:
mode: