Kukjin Kim | 8c14482 | 2010-09-01 13:23:31 +0900 | [diff] [blame] | 1 | /* linux/arch/arm/mach-s5p64x0/include/mach/pwm-clock.h |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 2 | * |
Kukjin Kim | 8c14482 | 2010-09-01 13:23:31 +0900 | [diff] [blame] | 3 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 5 | * |
| 6 | * Copyright 2008 Openmoko, Inc. |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 7 | * Copyright 2008 Simtec Electronics |
| 8 | * Ben Dooks <ben@simtec.co.uk> |
| 9 | * http://armlinux.simtec.co.uk/ |
| 10 | * |
Kukjin Kim | 8c14482 | 2010-09-01 13:23:31 +0900 | [diff] [blame] | 11 | * S5P64X0 - pwm clock and timer support |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License version 2 as |
| 15 | * published by the Free Software Foundation. |
| 16 | */ |
| 17 | |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 18 | #ifndef __ASM_ARCH_PWMCLK_H |
| 19 | #define __ASM_ARCH_PWMCLK_H __FILE__ |
| 20 | |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 21 | /** |
| 22 | * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 23 | * @tcfg: The timer TCFG1 register bits shifted down to 0. |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 24 | * |
| 25 | * Return true if the given configuration from TCFG1 is a TCLK instead |
| 26 | * any of the TDIV clocks. |
| 27 | */ |
| 28 | static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) |
| 29 | { |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 30 | return 0; |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | /** |
| 34 | * tcfg_to_divisor() - convert tcfg1 setting to a divisor |
| 35 | * @tcfg1: The tcfg1 setting, shifted down. |
| 36 | * |
| 37 | * Get the divisor value for the given tcfg1 setting. We assume the |
| 38 | * caller has already checked to see if this is not a TCLK source. |
| 39 | */ |
| 40 | static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) |
| 41 | { |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 42 | return 1 << tcfg1; |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | /** |
| 46 | * pwm_tdiv_has_div1() - does the tdiv setting have a /1 |
| 47 | * |
| 48 | * Return true if we have a /1 in the tdiv setting. |
| 49 | */ |
| 50 | static inline unsigned int pwm_tdiv_has_div1(void) |
| 51 | { |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 52 | return 1; |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | /** |
| 56 | * pwm_tdiv_div_bits() - calculate TCFG1 divisor value. |
| 57 | * @div: The divisor to calculate the bit information for. |
| 58 | * |
| 59 | * Turn a divisor into the necessary bit field for TCFG1. |
| 60 | */ |
| 61 | static inline unsigned long pwm_tdiv_div_bits(unsigned int div) |
| 62 | { |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 63 | return ilog2(div); |
Kukjin Kim | 5f3545f | 2010-01-14 08:15:39 +0900 | [diff] [blame] | 64 | } |
| 65 | |
Jongpill Lee | 474b62f | 2010-03-19 15:33:12 +0900 | [diff] [blame] | 66 | #define S3C_TCFG1_MUX_TCLK 0 |
| 67 | |
| 68 | #endif /* __ASM_ARCH_PWMCLK_H */ |