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gpio: stm32: add support for STM32F4

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Implements MCU-specific GPIO input interrupt integration.  Added
definition of System configuration controller as well as its needed by
the GPIO code.

The SYSCFG controller is used for system-specific configuration such as:
 - remap the type of memory accessible at address 0x00000000
 - manage the external interrupt line connection to GPIOs
 - configure the I/O compensation cell

Change-Id: Id2ebfbd1b21e77be76406d1cd6cd5d4989e9e2fa
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Ricardo Salveti 2016-10-27 00:08:34 +05:30 • committed by Kumar Gala
commit cf59106433
7 changed files with 402 additions and 0 deletions
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23
arch/arm/soc/st_stm32/stm32f4/soc.h
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@ -68,12 +68,35 @@
/* FLASH */
#define FLASH_R_BASE (AHB1PERIPH_BASE + 0x3C00)
/* SYSCFG */
#define SYSCFG_BASE (APB2PERIPH_BASE + 0x3800)
#ifndef _ASMLANGUAGE
#include <device.h>
#include <misc/util.h>
#include <drivers/rand32.h>
/* IO pin functions */
enum stm32f4x_pin_config_mode {
STM32F4X_PIN_CONFIG_DRIVE_PUSH_PULL,
STM32F4X_PIN_CONFIG_DRIVE_PUSH_UP,
STM32F4X_PIN_CONFIG_DRIVE_PUSH_DOWN,
STM32F4X_PIN_CONFIG_DRIVE_OPEN_DRAIN,
STM32F4X_PIN_CONFIG_DRIVE_OPEN_UP,
STM32F4X_PIN_CONFIG_DRIVE_OPEN_DOWN,
STM32F4X_PIN_CONFIG_AF_PUSH_PULL,
STM32F4X_PIN_CONFIG_AF_PUSH_UP,
STM32F4X_PIN_CONFIG_AF_PUSH_DOWN,
STM32F4X_PIN_CONFIG_AF_OPEN_DRAIN,
STM32F4X_PIN_CONFIG_AF_OPEN_UP,
STM32F4X_PIN_CONFIG_AF_OPEN_DOWN,
STM32F4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
STM32F4X_PIN_CONFIG_BIAS_PULL_UP,
STM32F4X_PIN_CONFIG_BIAS_PULL_DOWN,
STM32F4X_PIN_CONFIG_ANALOG,
};
#include "soc_irq.h"
#endif /* !_ASMLANGUAGE */