Blackfin: add portmuxing for UARTs on the BF51x

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/cpu/blackfin/serial.h b/cpu/blackfin/serial.h
index ec40c266ac58a1b2bf2294221206f4edeec153ea..90fceecb8e92f15a15079f5f32521f7020afd424 100644 (file)
--- a/cpu/blackfin/serial.h
+++ b/cpu/blackfin/serial.h
@@ -95,7 +95,16 @@
 __attribute__((always_inline))
 static inline void serial_do_portmux(void)
 {
-#ifdef __ADSPBF52x__
+#if defined(__ADSPBF51x__)
+# define DO_MUX(port, mux_tx, mux_rx, tx, rx) \
+       bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~(PORT_x_MUX_##mux_tx##_MASK | PORT_x_MUX_##mux_rx##_MASK)) | PORT_x_MUX_##mux_tx##_FUNC_2 | PORT_x_MUX_##mux_rx##_FUNC_2); \
+       bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx);
+       switch (CONFIG_UART_CONSOLE) {
+       case 0: DO_MUX(G, 5, 5, 9, 10);  break; /* Port G; mux 5; PG9 and PG10 */
+       case 1: DO_MUX(F, 2, 3, 14, 15); break; /* Port H; mux 2/3; PH14 and PH15 */
+       }
+       SSYNC();
+#elif defined(__ADSPBF52x__)
 # define DO_MUX(port, mux, tx, rx) \
        bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~PORT_x_MUX_##mux##_MASK) | PORT_x_MUX_##mux##_FUNC_3); \
        bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx);