diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-08-09 14:07:19 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-08-09 14:07:19 +0100 |
commit | 2192482ee5ce5d5d4a6cec0c351b2d3a744606eb (patch) | |
tree | 15ab3c23d05e98829741b03922b51b81fd102b64 /arch/arm/mach-s5pv310/include/mach/pwm-clock.h | |
parent | 500b9fc922cbec572f4fd1436533bfaed5011262 (diff) | |
parent | a68fefe0d2f364ac3d8497ef37dcad713c261103 (diff) |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Conflicts:
arch/arm/Kconfig
Diffstat (limited to 'arch/arm/mach-s5pv310/include/mach/pwm-clock.h')
-rw-r--r-- | arch/arm/mach-s5pv310/include/mach/pwm-clock.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv310/include/mach/pwm-clock.h b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h new file mode 100644 index 000000000000..7e6da2701088 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h @@ -0,0 +1,70 @@ +/* linux/arch/arm/mach-s5pv310/include/mach/pwm-clock.h + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h + * + * S5PV310 - 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 */ |