pm_uc3l.c File Reference

#include "pm_uc3l.h"

Data Structures
union	u_avr32_pm_cfdctrl_t
union	u_avr32_pm_cpusel_t
union	u_avr32_pm_pbasel_t
union	u_avr32_pm_pbbsel_t

Functions
long	pm_config_mainclk_safety (bool cfd, bool ocp, bool final)
	Configure the main clock safety mechanisms. More...
long	pm_disable_clk_domain_div (pm_clk_domain_t clock_domain)
	Disable the division ratio for a clock domain. More...
long	pm_disable_module (unsigned long module)
	Disable the clock of a module. More...
long	pm_enable_module (unsigned long module)
	Module Functions. More...
static pm_divratio_t	pm_find_divratio (unsigned long ref_freq_hz, unsigned long target_freq_hz)
	Compute the division ratio field of the PM CPU/PBxSEL registers to apply to get a target frequency from a main clock source frequency. More...
void	pm_set_all_cksel (unsigned long main_clock_f_hz, unsigned long cpu_f_hz, unsigned long pba_f_hz, unsigned long pbb_f_hz)
	Enable or Disable the division ratio for each clock domain depending on the main source clock frequency and each clock domain target frequency. More...
long	pm_set_clk_domain_div (pm_clk_domain_t clock_domain, pm_divratio_t divratio)
	Set the division ratio for a clock domain. More...
long	pm_set_mclk_source (pm_clk_src_t src)
	Clock Functions. More...
long	pm_wait_for_clk_ready (void)
	Wait actively for the clock settings to be effective. More...

static pm_divratio_t pm_find_divratio ( unsigned long  ref_freq_hz, unsigned long  target_freq_hz  )

static

Compute the division ratio field of the PM CPU/PBxSEL registers to apply to get a target frequency from a main clock source frequency.

Parameters

ref_freq_hz	The main clock source frequency (Hz)
target_freq_hz	The target frequency (Hz)

Returns

the division ratio CPUSEL

Return values

PM_CKSEL_DIVRATIO_ERROR	no div ratio to apply
the	div ratio enum value

References ctz, and PM_CKSEL_DIVRATIO_ERROR.

Referenced by pm_set_all_cksel().