From 5f3545f64a44b2b2dac34141dba23d18cdf40a92 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Thu, 14 Jan 2010 08:15:39 +0900 Subject: [PATCH] ARM: S5P6440: Add Timer support This patch adds timer support for S5P6440 CPU. Signed-off-by: Atul Dahiya Signed-off-by: Kukjin Kim Signed-off-by: Ben Dooks --- arch/arm/mach-s5p6440/include/mach/pwm-clock.h | 62 ++++++++++++++++++++++++++ arch/arm/mach-s5p6440/include/mach/tick.h | 24 ++++++++++ 2 files changed, 86 insertions(+) create mode 100644 arch/arm/mach-s5p6440/include/mach/pwm-clock.h create mode 100644 arch/arm/mach-s5p6440/include/mach/tick.h diff --git a/arch/arm/mach-s5p6440/include/mach/pwm-clock.h b/arch/arm/mach-s5p6440/include/mach/pwm-clock.h new file mode 100644 index 0000000..c4bb7c5 --- /dev/null +++ b/arch/arm/mach-s5p6440/include/mach/pwm-clock.h @@ -0,0 +1,62 @@ +/* linux/arch/arm/mach-s5p6440/include/mach/pwm-clock.h + * + * Copyright 2008 Simtec Electronics + * Ben Dooks + * http://armlinux.simtec.co.uk/ + * + * Copyright 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P6440 - 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. +*/ + +/** + * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk + * @cfg: 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 == S3C2410_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 << (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 0; +} + +/** + * 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) - 1; +} + +#define S3C_TCFG1_MUX_TCLK S3C2410_TCFG1_MUX_TCLK diff --git a/arch/arm/mach-s5p6440/include/mach/tick.h b/arch/arm/mach-s5p6440/include/mach/tick.h new file mode 100644 index 0000000..0815aeb --- /dev/null +++ b/arch/arm/mach-s5p6440/include/mach/tick.h @@ -0,0 +1,24 @@ +/* linux/arch/arm/mach-s5p6440/include/mach/tick.h + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P6440 - Timer tick support definitions + * + * 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_TICK_H +#define __ASM_ARCH_TICK_H __FILE__ + +static inline u32 s3c24xx_ostimer_pending(void) +{ + u32 pend = __raw_readl(S5P_VA_VIC0 + VIC_RAW_STATUS); + return pend & (1 << (IRQ_TIMER4_VIC - S5P_IRQ_VIC0(0))); +} + +#define TICK_MAX (0xffffffff) + +#endif /* __ASM_ARCH_TICK_H */ -- 2.7.4