1/* linux/arch/arm/mach-s5p6442/include/mach/pwm-clock.h 2 * 3 * Copyright (c) 2010 Samsung Electronics Co., Ltd. 4 * http://www.samsung.com/ 5 * 6 * Copyright 2008 Openmoko, Inc. 7 * Copyright 2008 Simtec Electronics 8 * Ben Dooks <ben@simtec.co.uk> 9 * http://armlinux.simtec.co.uk/ 10 * 11 * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h 12 * 13 * S5P6442 - pwm clock and timer support 14 * 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License version 2 as 17 * published by the Free Software Foundation. 18*/ 19 20#ifndef __ASM_ARCH_PWMCLK_H 21#define __ASM_ARCH_PWMCLK_H __FILE__ 22 23/** 24 * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk 25 * @tcfg: The timer TCFG1 register bits shifted down to 0. 26 * 27 * Return true if the given configuration from TCFG1 is a TCLK instead 28 * any of the TDIV clocks. 29 */ 30static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) 31{ 32 return tcfg == S3C64XX_TCFG1_MUX_TCLK; 33} 34 35/** 36 * tcfg_to_divisor() - convert tcfg1 setting to a divisor 37 * @tcfg1: The tcfg1 setting, shifted down. 38 * 39 * Get the divisor value for the given tcfg1 setting. We assume the 40 * caller has already checked to see if this is not a TCLK source. 41 */ 42static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) 43{ 44 return 1 << tcfg1; 45} 46 47/** 48 * pwm_tdiv_has_div1() - does the tdiv setting have a /1 49 * 50 * Return true if we have a /1 in the tdiv setting. 51 */ 52static inline unsigned int pwm_tdiv_has_div1(void) 53{ 54 return 1; 55} 56 57/** 58 * pwm_tdiv_div_bits() - calculate TCFG1 divisor value. 59 * @div: The divisor to calculate the bit information for. 60 * 61 * Turn a divisor into the necessary bit field for TCFG1. 62 */ 63static inline unsigned long pwm_tdiv_div_bits(unsigned int div) 64{ 65 return ilog2(div); 66} 67 68#define S3C_TCFG1_MUX_TCLK S3C64XX_TCFG1_MUX_TCLK 69 70#endif /* __ASM_ARCH_PWMCLK_H */ 71