[PATCH] pinctrl: stm32: replace magic values with defines for STM32_PINMODE

[Ahmad Fatoum]

Makes the code easier to follow and allows using the new macros in PBL
code for early pinmuxing of e.g. the debug UART.

Signed-off-by: Ahmad Fatoum <ahmad at a3f.at>
---
 drivers/pinctrl/pinctrl-stm32.c | 6 +++---
 include/soc/stm32/gpio.h        | 4 ++++
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-stm32.c b/drivers/pinctrl/pinctrl-stm32.c
index 9b5b04b6d6a8..ceaa4254c4d0 100644
--- a/drivers/pinctrl/pinctrl-stm32.c
+++ b/drivers/pinctrl/pinctrl-stm32.c
@@ -63,11 +63,11 @@ static inline u32 stm32_gpio_get_mode(u32 function)
 {
 	switch (function) {
 	case STM32_PIN_GPIO:
-		return 0;
+		return STM32_PINMODE_GPIO;
 	case STM32_PIN_AF(0) ... STM32_PIN_AF(15):
-		return 2;
+		return STM32_PINMODE_AF;
 	case STM32_PIN_ANALOG:
-		return 3;
+		return STM32_PINMODE_ANALOG;
 	}
 
 	return 0;
diff --git a/include/soc/stm32/gpio.h b/include/soc/stm32/gpio.h
index 13b492a6937c..448fb19e2ef8 100644
--- a/include/soc/stm32/gpio.h
+++ b/include/soc/stm32/gpio.h
@@ -25,6 +25,10 @@
 #define STM32_PIN_AF(x)		((x) + 1)
 #define STM32_PIN_ANALOG	(STM32_PIN_AF(15) + 1)
 
+#define STM32_PINMODE_GPIO	0
+#define STM32_PINMODE_AF	2
+#define STM32_PINMODE_ANALOG	3
+
 #define STM32_GPIO_PINS_PER_BANK	16
 
 enum stm32_pin_bias { STM32_PIN_NO_BIAS, STM32_PIN_PULL_UP, STM32_PIN_PULL_DOWN };
-- 
2.33.0