ARMv7M: Add STM32F4 support

Signed-off-by: Kamil Lulko <rev13@wp.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-stm32f4/gpio.h b/arch/arm/include/asm/arch-stm32f4/gpio.h
new file mode 100644
index 0000000000..7cd866ea2a
--- /dev/null
+++ b/arch/arm/include/asm/arch-stm32f4/gpio.h
@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2011
+ * Yuri Tikhonov, Emcraft Systems, yur@emcraft.com
+ *
+ * (C) Copyright 2015
+ * Kamil Lulko, <rev13@wp.pl>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STM32_GPIO_H_
+#define _STM32_GPIO_H_
+
+enum stm32_gpio_port {
+	STM32_GPIO_PORT_A = 0,
+	STM32_GPIO_PORT_B,
+	STM32_GPIO_PORT_C,
+	STM32_GPIO_PORT_D,
+	STM32_GPIO_PORT_E,
+	STM32_GPIO_PORT_F,
+	STM32_GPIO_PORT_G,
+	STM32_GPIO_PORT_H,
+	STM32_GPIO_PORT_I
+};
+
+enum stm32_gpio_pin {
+	STM32_GPIO_PIN_0 = 0,
+	STM32_GPIO_PIN_1,
+	STM32_GPIO_PIN_2,
+	STM32_GPIO_PIN_3,
+	STM32_GPIO_PIN_4,
+	STM32_GPIO_PIN_5,
+	STM32_GPIO_PIN_6,
+	STM32_GPIO_PIN_7,
+	STM32_GPIO_PIN_8,
+	STM32_GPIO_PIN_9,
+	STM32_GPIO_PIN_10,
+	STM32_GPIO_PIN_11,
+	STM32_GPIO_PIN_12,
+	STM32_GPIO_PIN_13,
+	STM32_GPIO_PIN_14,
+	STM32_GPIO_PIN_15
+};
+
+enum stm32_gpio_mode {
+	STM32_GPIO_MODE_IN = 0,
+	STM32_GPIO_MODE_OUT,
+	STM32_GPIO_MODE_AF,
+	STM32_GPIO_MODE_AN
+};
+
+enum stm32_gpio_otype {
+	STM32_GPIO_OTYPE_PP = 0,
+	STM32_GPIO_OTYPE_OD
+};
+
+enum stm32_gpio_speed {
+	STM32_GPIO_SPEED_2M = 0,
+	STM32_GPIO_SPEED_25M,
+	STM32_GPIO_SPEED_50M,
+	STM32_GPIO_SPEED_100M
+};
+
+enum stm32_gpio_pupd {
+	STM32_GPIO_PUPD_NO = 0,
+	STM32_GPIO_PUPD_UP,
+	STM32_GPIO_PUPD_DOWN
+};
+
+enum stm32_gpio_af {
+	STM32_GPIO_AF0 = 0,
+	STM32_GPIO_AF1,
+	STM32_GPIO_AF2,
+	STM32_GPIO_AF3,
+	STM32_GPIO_AF4,
+	STM32_GPIO_AF5,
+	STM32_GPIO_AF6,
+	STM32_GPIO_AF7,
+	STM32_GPIO_AF8,
+	STM32_GPIO_AF9,
+	STM32_GPIO_AF10,
+	STM32_GPIO_AF11,
+	STM32_GPIO_AF12,
+	STM32_GPIO_AF13,
+	STM32_GPIO_AF14,
+	STM32_GPIO_AF15
+};
+
+struct stm32_gpio_dsc {
+	enum stm32_gpio_port	port;
+	enum stm32_gpio_pin	pin;
+};
+
+struct stm32_gpio_ctl {
+	enum stm32_gpio_mode	mode;
+	enum stm32_gpio_otype	otype;
+	enum stm32_gpio_speed	speed;
+	enum stm32_gpio_pupd	pupd;
+	enum stm32_gpio_af	af;
+};
+
+static inline unsigned stm32_gpio_to_port(unsigned gpio)
+{
+	return gpio / 16;
+}
+
+static inline unsigned stm32_gpio_to_pin(unsigned gpio)
+{
+	return gpio % 16;
+}
+
+int stm32_gpio_config(const struct stm32_gpio_dsc *gpio_dsc,
+		const struct stm32_gpio_ctl *gpio_ctl);
+int stm32_gpout_set(const struct stm32_gpio_dsc *gpio_dsc, int state);
+
+#endif /* _STM32_GPIO_H_ */