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stm32: Unify enable_pclock() code

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Unify the handling of the enable_pclock() and is_enabled_pclock() code
across all stm32 chips.  All chips will now perform a peripheral reset
on enable_pclock() (this is a change for stm32f0 and stm32h7).  The
enable_pclock() code will now also disable irqs during the enable.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2021-12-24 12:23:56 -05:00
parent 9bdd61758e
commit 8b6753d68f
8 changed files with 129 additions and 242 deletions
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18
src/stm32/internal.h
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@ -18,22 +18,28 @@
#include "stm32h7xx.h"
#endif
// gpio.c
extern GPIO_TypeDef * const digital_regs[];
#define GPIO(PORT, NUM) (((PORT)-'A') * 16 + (NUM))
#define GPIO2PORT(PIN) ((PIN) / 16)
#define GPIO2BIT(PIN) (1<<((PIN) % 16))
// gpioperiph.c
#define GPIO_INPUT 0
#define GPIO_OUTPUT 1
#define GPIO_OPEN_DRAIN 0x100
#define GPIO_FUNCTION(fn) (2 | ((fn) << 4))
#define GPIO_ANALOG 3
void enable_pclock(uint32_t periph_base);
int is_enabled_pclock(uint32_t periph_base);
uint32_t get_pclock_frequency(uint32_t periph_base);
void gpio_clock_enable(GPIO_TypeDef *regs);
void gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup);
// clockline.c
void enable_pclock(uint32_t periph_base);
int is_enabled_pclock(uint32_t periph_base);
// stm32??.c
struct cline { volatile uint32_t *en, *rst; uint32_t bit; };
struct cline lookup_clock_line(uint32_t periph_base);
uint32_t get_pclock_frequency(uint32_t periph_base);
void gpio_clock_enable(GPIO_TypeDef *regs);
#endif // internal.h