From 3c31336dc5b7ea5b6d6168a8c38c46dd54d65e95 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Mon, 14 Feb 2011 16:13:27 +0900 Subject: ARM: EXYNOS4: Update Timer part This patch updates Timer part of EXYNOS4 according to the change of ARCH name, EXYNOS4. Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos4/include/mach/pwm-clock.h | 70 ++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 arch/arm/mach-exynos4/include/mach/pwm-clock.h (limited to 'arch/arm/mach-exynos4/include') diff --git a/arch/arm/mach-exynos4/include/mach/pwm-clock.h b/arch/arm/mach-exynos4/include/mach/pwm-clock.h new file mode 100644 index 0000000..8e12090 --- /dev/null +++ b/arch/arm/mach-exynos4/include/mach/pwm-clock.h @@ -0,0 +1,70 @@ +/* linux/arch/arm/mach-exynos4/include/mach/pwm-clock.h + * + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks + * http://armlinux.simtec.co.uk/ + * + * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h + * + * EXYNOS4 - pwm clock and timer support + * + * 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. +*/ + +#ifndef __ASM_ARCH_PWMCLK_H +#define __ASM_ARCH_PWMCLK_H __FILE__ + +/** + * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk + * @tcfg: The timer TCFG1 register bits shifted down to 0. + * + * Return true if the given configuration from TCFG1 is a TCLK instead + * any of the TDIV clocks. + */ +static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) +{ + return tcfg == S3C64XX_TCFG1_MUX_TCLK; +} + +/** + * tcfg_to_divisor() - convert tcfg1 setting to a divisor + * @tcfg1: The tcfg1 setting, shifted down. + * + * Get the divisor value for the given tcfg1 setting. We assume the + * caller has already checked to see if this is not a TCLK source. + */ +static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) +{ + return 1 << tcfg1; +} + +/** + * pwm_tdiv_has_div1() - does the tdiv setting have a /1 + * + * Return true if we have a /1 in the tdiv setting. + */ +static inline unsigned int pwm_tdiv_has_div1(void) +{ + return 1; +} + +/** + * pwm_tdiv_div_bits() - calculate TCFG1 divisor value. + * @div: The divisor to calculate the bit information for. + * + * Turn a divisor into the necessary bit field for TCFG1. + */ +static inline unsigned long pwm_tdiv_div_bits(unsigned int div) +{ + return ilog2(div); +} + +#define S3C_TCFG1_MUX_TCLK S3C64XX_TCFG1_MUX_TCLK + +#endif /* __ASM_ARCH_PWMCLK_H */ -- cgit v1.1