exynos: Cleanup exynos_init

- None of the callers perform error checking and based on the non-empty
  versions of this function, there's no checking to be done, so make
  this a void.
- Add a default weak version of the function.
- Remove the empty versions of exynos_init now that we have a weak
  version.

Signed-off-by: Tom Rini <trini@konsulko.com>

arch/arm/mach-exynos/include/mach/board.h

@@ -11,7 +11,7 @@
  * Exynos baord specific changes for
  * board_init
  */
-int exynos_init(void);
+void exynos_init(void);
 
 /*
  * Exynos board specific changes for

board/samsung/axy17lte/Makefile

@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0+
-#
-obj-y	+= axy17lte.o

board/samsung/axy17lte/axy17lte.c

@@ -1,11 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Samsung A5Y17 and A3Y17 LTE boards based on Exynos 7880 and Exynos 7870 SoCs
- */
-
-#include <common.h>
-
-int exynos_init(void)
-{
-	return 0;
-}

board/samsung/common/board.c

@@ -43,6 +43,10 @@ __weak int exynos_early_init_f(void)
 	return 0;
 }
 
+__weak void exynos_init(void)
+{
+}
+
 __weak int exynos_power_init(void)
 {
 	return 0;
@@ -113,7 +117,9 @@ int board_init(void)
 	gd->ram_size -= size;
 	gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
 #endif
-	return exynos_init();
+	exynos_init();
+
+	return 0;
 }
 
 int dram_init(void)

board/samsung/common/exynos5-dt.c

@@ -38,11 +38,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int exynos_init(void)
-{
-	return 0;
-}
-
 static int exynos_set_regulator(const char *name, uint uv)
 {
 	struct udevice *dev;

board/samsung/espresso7420/Makefile

@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0+
-#
-# Copyright (C) 2016 Samsung Electronics
-# Thomas Abraham <thomas.ab@samsung.com>
-
-obj-y	+= espresso7420.o

board/samsung/espresso7420/espresso7420.c

@@ -1,13 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Espresso7420 board file
- * Copyright (C) 2016 Samsung Electronics
- * Thomas Abraham <thomas.ab@samsung.com>
- */
-
-#include <common.h>
-
-int exynos_init(void)
-{
-	return 0;
-}

board/samsung/odroid/odroid.c

@@ -423,11 +423,9 @@ int exynos_early_init_f(void)
 	return 0;
 }
 
-int exynos_init(void)
+void exynos_init(void)
 {
 	board_gpio_init();
-
-	return 0;
 }
 
 int exynos_power_init(void)

board/samsung/origen/origen.c

@@ -12,11 +12,6 @@
 #include <asm/arch/pinmux.h>
 #include <usb.h>
 
-int exynos_init(void)
-{
-	return 0;
-}
-
 int board_usb_init(int index, enum usb_init_type init)
 {
 	return 0;

board/samsung/trats/trats.c

@@ -40,17 +40,8 @@ u32 get_board_rev(void)
 }
 #endif
 
-static void check_hw_revision(void);
 struct dwc2_plat_otg_data s5pc210_otg_data;
 
-int exynos_init(void)
-{
-	check_hw_revision();
-	printf("HW Revision:\t0x%x\n", board_rev);
-
-	return 0;
-}
-
 #if !CONFIG_IS_ENABLED(DM_I2C) /* TODO(maintainer): Convert to driver model */
 static void trats_low_power_mode(void)
 {
@@ -215,6 +206,11 @@ static void check_hw_revision(void)
 	board_rev |= hwrev;
 }
 
+void exynos_init(void)
+{
+	check_hw_revision();
+	printf("HW Revision:\t0x%x\n", board_rev);
+}
 
 #ifdef CONFIG_USB_GADGET
 static int s5pc210_phy_control(int on)

board/samsung/trats2/trats2.c

@@ -107,7 +107,7 @@ int exynos_early_init_f(void)
 	return 0;
 }
 
-int exynos_init(void)
+void exynos_init(void)
 {
 	struct exynos4_power *pwr =
 		(struct exynos4_power *)samsung_get_base_power();
@@ -124,8 +124,6 @@ int exynos_init(void)
 	 */
 	writel(0, &pwr->inform4);
 	writel(0, &pwr->inform5);
-
-	return 0;
 }
 
 int exynos_power_init(void)

board/samsung/universal_c210/universal.c

@@ -265,7 +265,7 @@ static int init_pmic_lcd(void)
 	return 0;
 }
 
-int exynos_init(void)
+void exynos_init(void)
 {
 	gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
 
@@ -293,6 +293,4 @@ int exynos_init(void)
 
 	check_hw_revision();
 	printf("HW Revision:\t0x%x\n", board_rev);
-
-	return 0;
 }