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1 | /* linux/arch/arm/mach-s5p6440/include/mach/pwm-clock.h |
2 | * | |
474b62f5 JL |
3 | * Copyright (c) 2009 Samsung Electronics Co., Ltd. |
4 | * http://www.samsung.com/ | |
5 | * | |
6 | * Copyright 2008 Openmoko, Inc. | |
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7 | * Copyright 2008 Simtec Electronics |
8 | * Ben Dooks <ben@simtec.co.uk> | |
9 | * http://armlinux.simtec.co.uk/ | |
10 | * | |
474b62f5 | 11 | * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h |
5f3545f6 KK |
12 | * |
13 | * S5P6440 - 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 | ||
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20 | #ifndef __ASM_ARCH_PWMCLK_H |
21 | #define __ASM_ARCH_PWMCLK_H __FILE__ | |
22 | ||
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23 | /** |
24 | * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk | |
474b62f5 | 25 | * @tcfg: The timer TCFG1 register bits shifted down to 0. |
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26 | * |
27 | * Return true if the given configuration from TCFG1 is a TCLK instead | |
28 | * any of the TDIV clocks. | |
29 | */ | |
30 | static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) | |
31 | { | |
474b62f5 | 32 | return 0; |
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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 | */ | |
42 | static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) | |
43 | { | |
474b62f5 | 44 | return 1 << tcfg1; |
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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 | */ | |
52 | static inline unsigned int pwm_tdiv_has_div1(void) | |
53 | { | |
474b62f5 | 54 | return 1; |
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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 | */ | |
63 | static inline unsigned long pwm_tdiv_div_bits(unsigned int div) | |
64 | { | |
474b62f5 | 65 | return ilog2(div); |
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66 | } |
67 | ||
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68 | #define S3C_TCFG1_MUX_TCLK 0 |
69 | ||
70 | #endif /* __ASM_ARCH_PWMCLK_H */ |