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ARM: S5P6440: Add Timer support

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This patch adds timer support for S5P6440 CPU.

Signed-off-by: Atul Dahiya <atul.dahiya@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Kukjin Kim 2010-01-14 08:15:39 +09:00 committed by Ben Dooks
parent b7db51be43
commit 5f3545f64a
2 changed files with 86 additions and 0 deletions
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62
arch/arm/mach-s5p6440/include/mach/pwm-clock.h Normal file
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/* linux/arch/arm/mach-s5p6440/include/mach/pwm-clock.h
*
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* 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

24
arch/arm/mach-s5p6440/include/mach/tick.h Normal file
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/* 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 */