From f3e9a706b03391c57b132b7a31f1f4cea4376bc2 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Thu, 20 Nov 2008 18:36:33 +0000 Subject: The S3C64XX series has a new TCFG divider setting to allow the clock directly through, which means that we need to update the pwm-clock code to cope with this. Add containing the specific code to deal with the TCFG divider settings and provide any other per-arch data that the pwm-clock driver needs to function. Signed-off-by: Ben Dooks --- arch/arm/plat-s3c24xx/include/mach/pwm-clock.h | 44 ++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/arm/plat-s3c24xx/include/mach/pwm-clock.h (limited to 'arch/arm/plat-s3c24xx/include') diff --git a/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h b/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h new file mode 100644 index 00000000000..3194ed329ea --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h @@ -0,0 +1,44 @@ +/* linux/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h + * + * Copyright 2008 Simtec Electronics + * Ben Dooks + * http://armlinux.simtec.co.uk/ + * + * S3C24xx - pwm clock and timer support + */ + +/** + * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk + * @cfg: 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 == S3C2410_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 << (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 0; +} + +#define S3C_TCFG1_MUX_TCLK S3C2410_TCFG1_MUX_TCLK -- cgit v1.2.3