ARM: dts: stm32: change pinctrl bindings definition
Initially each pin was declared in "include/dt-bindings/stm32<SOC>-pinfunc.h"
and each definition contained SOC names (ex: STM32F429_PA9_FUNC_USART1_TX).
Since this approach was approved, the number of supported MCU has
increased (STM32F429/STM32F469/STM32f746/STM32H743). To avoid to add a new
file in "include/dt-bindings" each time a new STM32 SOC arrives I propose
a new approach which consist to use a macro to define pin muxing in device
tree. All STM32 will use the common macro to define pinmux. Furthermore, it
will make STM32 maintenance and integration of new SOC easier .
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Reviewed-by: Vikas MANOCHA <vikas.manocha@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
diff --git a/include/dt-bindings/pinctrl/stm32-pinfunc.h b/include/dt-bindings/pinctrl/stm32-pinfunc.h
new file mode 100644
index 0000000..b8dfe31
--- /dev/null
+++ b/include/dt-bindings/pinctrl/stm32-pinfunc.h
@@ -0,0 +1,30 @@
+#ifndef _DT_BINDINGS_STM32_PINFUNC_H
+#define _DT_BINDINGS_STM32_PINFUNC_H
+
+/* define PIN modes */
+#define GPIO 0x0
+#define AF0 0x1
+#define AF1 0x2
+#define AF2 0x3
+#define AF3 0x4
+#define AF4 0x5
+#define AF5 0x6
+#define AF6 0x7
+#define AF7 0x8
+#define AF8 0x9
+#define AF9 0xa
+#define AF10 0xb
+#define AF11 0xc
+#define AF12 0xd
+#define AF13 0xe
+#define AF14 0xf
+#define AF15 0x10
+#define ANALOG 0x11
+
+/* define Pins number*/
+#define PIN_NO(port, line) (((port) - 'A') * 0x10 + (line))
+
+#define STM32_PINMUX(port, line, mode) (((PIN_NO(port, line)) << 8) | (mode))
+
+#endif /* _DT_BINDINGS_STM32_PINFUNC_H */
+