From c0468b0244464a9d85e527fd0bfee91caed697a7 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Tue, 20 Sep 2011 08:44:38 +0900 Subject: ARM: SAMSUNG: Consolidate plat/pwm-clock.h Removed - arch/arm/plat-s3c24xx/include/mach/pwm-clock.h - arch/arm/mach-s3c64xx/include/mach/pwm-clock.h - arch/arm/mach-s5p64x0/include/mach/pwm-clock.h - arch/arm/mach-s5pc100/include/mach/pwm-clock.h - arch/arm/mach-s5pv210/include/mach/pwm-clock.h - arch/arm/mach-exynos4/include/mach/pwm-clock.h And created - arch/arm/plat-samsung/include/plat/pwm-clock.h Cc: Ben Dooks [kgene.kim@samsung.com: changed title] Signed-off-by: Kukjin Kim --- arch/arm/plat-samsung/include/plat/pwm-clock.h | 81 ++++++++++++++++++++++++++ arch/arm/plat-samsung/pwm-clock.c | 13 ++++- 2 files changed, 92 insertions(+), 2 deletions(-) create mode 100644 arch/arm/plat-samsung/include/plat/pwm-clock.h (limited to 'arch/arm/plat-samsung') diff --git a/arch/arm/plat-samsung/include/plat/pwm-clock.h b/arch/arm/plat-samsung/include/plat/pwm-clock.h new file mode 100644 index 000000000000..bf6a60eb6237 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/pwm-clock.h @@ -0,0 +1,81 @@ +/* linux/arch/arm/plat-samsung/include/plat/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/ + * + * SAMSUNG - 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_PLAT_PWM_CLOCK_H +#define __ASM_PLAT_PWM_CLOCK_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) +{ + if (soc_is_s3c24xx()) + return tcfg == S3C2410_TCFG1_MUX_TCLK; + else if (soc_is_s3c64xx() || soc_is_s5pc100()) + return tcfg >= S3C64XX_TCFG1_MUX_TCLK; + else if (soc_is_s5p6440() || soc_is_s5p6450()) + return 0; + else + 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) +{ + if (soc_is_s3c24xx()) + return 1 << (tcfg1 + 1); + else + 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) +{ + if (soc_is_s3c24xx()) + return 0; + else + 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) +{ + if (soc_is_s3c24xx()) + return ilog2(div) - 1; + else + return ilog2(div); +} +#endif /* __ASM_PLAT_PWM_CLOCK_H */ diff --git a/arch/arm/plat-samsung/pwm-clock.c b/arch/arm/plat-samsung/pwm-clock.c index f1bba88ed2f5..a35ff3bcffe4 100644 --- a/arch/arm/plat-samsung/pwm-clock.c +++ b/arch/arm/plat-samsung/pwm-clock.c @@ -27,7 +27,7 @@ #include #include -#include +#include /* Each of the timers 0 through 5 go through the following * clock tree, with the inputs depending on the timers. @@ -339,8 +339,17 @@ static int clk_pwm_tin_set_parent(struct clk *clk, struct clk *parent) unsigned long bits; unsigned long shift = S3C2410_TCFG1_SHIFT(id); + unsigned long mux_tclk; + + if (soc_is_s3c24xx()) + mux_tclk = S3C2410_TCFG1_MUX_TCLK; + else if (soc_is_s5p6440() || soc_is_s5p6450()) + mux_tclk = 0; + else + mux_tclk = S3C64XX_TCFG1_MUX_TCLK; + if (parent == s3c24xx_pwmclk_tclk(id)) - bits = S3C_TCFG1_MUX_TCLK << shift; + bits = mux_tclk << shift; else if (parent == s3c24xx_pwmclk_tdiv(id)) bits = clk_pwm_tdiv_bits(to_tdiv(parent)) << shift; else -- cgit