tegra20: rework UART GPIO handling

Rename board provided gpio_config_uart() to
gpio_early_init_uart() as it does the same thing as the equally
called function provided by the uart-switch code. This allows
to simply call this function in early board init whether or not
we are building with CONFIG_UART_SWITCH defined.

Also provide a weak symbol for this function, to avoid the
need to provide this function for boards that don't need any
fixup.

This patch supersedes the earlier posted
"tegra: convert gpio_config_uart to weak symbol".
Build tested with MAKEALL -s tegra20

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

7 files changed, 9 insertions, 40 deletions

diff --git a/board/avionic-design/common/tamonten.c b/board/avionic-design/common/tamonten.c
index 7c05d49..e6a932e 100644
--- a/board/avionic-design/common/tamonten.c
+++ b/board/avionic-design/common/tamonten.c
@@ -40,13 +40,6 @@
 #include <mmc.h>
 #endif
 
-/*
- * Routine: gpio_config_uart
- * Description: Does nothing on Tamonten - no conflict w/SPI.
- */
-void gpio_config_uart(void)
-{
-}
 
 #ifdef CONFIG_BOARD_EARLY_INIT_F
 void gpio_early_init(void)
diff --git a/board/compal/paz00/paz00.c b/board/compal/paz00/paz00.c
index c73ac5f..0725989 100644
--- a/board/compal/paz00/paz00.c
+++ b/board/compal/paz00/paz00.c
@@ -24,13 +24,6 @@
 #include <mmc.h>
 #endif
 
-/*
- * Routine: gpio_config_uart
- * Description: Does nothing on Paz00 - no conflict w/SPI.
- */
-void gpio_config_uart(void)
-{
-}
 
 #ifdef CONFIG_TEGRA_MMC
 /*
diff --git a/board/compulab/trimslice/trimslice.c b/board/compulab/trimslice/trimslice.c
index 7b22a87..9ef66fd 100644
--- a/board/compulab/trimslice/trimslice.c
+++ b/board/compulab/trimslice/trimslice.c
@@ -34,13 +34,6 @@
 #include <mmc.h>
 #endif
 
-/*
- * Routine: gpio_config_uart
- * Description: Does nothing on TrimSlice - no UART-related GPIOs.
- */
-void gpio_config_uart(void)
-{
-}
 
 void pin_mux_spi(void)
 {
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
index 8821fdf..bd194bc 100644
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@@ -71,6 +71,13 @@ void __pin_mux_spi(void)
 
 void pin_mux_spi(void) __attribute__((weak, alias("__pin_mux_spi")));
 
+void __gpio_early_init_uart(void)
+{
+}
+
+void gpio_early_init_uart(void)
+__attribute__((weak, alias("__gpio_early_init_uart")));
+
 /*
  * Routine: power_det_init
  * Description: turn off power detects
@@ -155,11 +162,8 @@ int board_early_init_f(void)
 
 	/* Initialize periph GPIOs */
 	gpio_early_init();
-#ifdef CONFIG_SPI_UART_SWITCH
 	gpio_early_init_uart();
-#else
-	gpio_config_uart();
-#endif
+
 	return 0;
 }
 #endif	/* EARLY_INIT */
diff --git a/board/nvidia/harmony/harmony.c b/board/nvidia/harmony/harmony.c
index c23a87d..32ed9bb 100644
--- a/board/nvidia/harmony/harmony.c
+++ b/board/nvidia/harmony/harmony.c
@@ -33,13 +33,6 @@
 #include <mmc.h>
 #endif
 
-/*
- * Routine: gpio_config_uart
- * Description: Does nothing on Harmony - no conflict w/SPI.
- */
-void gpio_config_uart(void)
-{
-}
 
 #ifdef CONFIG_TEGRA_MMC
 /*
diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
index ab90a5d..4e8a183 100644
--- a/board/nvidia/seaboard/seaboard.c
+++ b/board/nvidia/seaboard/seaboard.c
@@ -46,7 +46,7 @@ static void gpio_config_uart_seaboard(void)
 	gpio_direction_output(GPIO_PI3, 0);
 }
 
-void gpio_config_uart(void)
+void gpio_early_init_uart(void)
 {
 	if (machine_is_ventana())
 		return;
diff --git a/board/nvidia/whistler/whistler.c b/board/nvidia/whistler/whistler.c
index af918c4..592cd6b 100644
--- a/board/nvidia/whistler/whistler.c
+++ b/board/nvidia/whistler/whistler.c
@@ -34,13 +34,6 @@
 #include <mmc.h>
 #endif
 
-/*
- * Routine: gpio_config_uart
- * Description: Does nothing on Whistler - no UART-related GPIOs.
- */
-void gpio_config_uart(void)
-{
-}
 
 /*
  * Routine: pin_mux_mmc