diff options
author | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 08:05:10 +0100 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 08:05:10 +0100 |
commit | b4b7a4ef097f288f724420b473dbf92a89c0ab7e (patch) | |
tree | 23ad8101e3e77c32a8d1e1b95a9c1cd7f7a475b7 /arch/arm/mach-s3c64xx/include/mach/pwm-clock.h | |
parent | e9ce335df51ff782035a15c261a3c0c9892a1767 (diff) | |
parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) |
Merge branch 'master' into for-linus
Conflicts:
block/Kconfig
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/arm/mach-s3c64xx/include/mach/pwm-clock.h')
-rw-r--r-- | arch/arm/mach-s3c64xx/include/mach/pwm-clock.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c64xx/include/mach/pwm-clock.h b/arch/arm/mach-s3c64xx/include/mach/pwm-clock.h new file mode 100644 index 00000000000..b25bedee0d5 --- /dev/null +++ b/arch/arm/mach-s3c64xx/include/mach/pwm-clock.h @@ -0,0 +1,56 @@ +/* linux/arch/arm/mach-s3c6400/include/mach/pwm-clock.h + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C64xx - pwm clock and timer support + */ + +/** + * 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 |