[U-Boot] [PATCH V2 1/2] watchdog: Split WDT from SPL_WDT

[Marek Vasut]

Use CONFIG_IS_ENABLED(WDT) to permit use of WDT in SPL without DM,
while the full U-Boot can use rich DM/DT WDT driver.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Peng Fan <Peng.Fan at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
---
V2: - Make SPL_WATCHDOG_SUPPORT imply SPL_WDT if !HW_WATCHDOG
    - Add SPL_WDT Kconfig entry
---
 common/board_r.c                  | 2 +-
 common/spl/Kconfig                | 1 +
 common/spl/spl.c                  | 2 +-
 drivers/watchdog/Kconfig          | 7 +++++++
 drivers/watchdog/Makefile         | 2 +-
 include/asm-generic/global_data.h | 2 +-
 include/wdt.h                     | 2 +-
 7 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/common/board_r.c b/common/board_r.c
index 150e8cd424..988e40abb2 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -678,7 +678,7 @@ static init_fnc_t init_sequence_r[] = {
 #ifdef CONFIG_DM
 	initr_dm,
 #endif
-#if defined(CONFIG_WDT)
+#if CONFIG_IS_ENABLED(WDT)
 	initr_watchdog,
 #endif
 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index c7cd34449a..09761b1db7 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -876,6 +876,7 @@ endif
 
 config SPL_WATCHDOG_SUPPORT
 	bool "Support watchdog drivers"
+	imply SPL_WDT if !HW_WATCHDOG
 	help
 	  Enable support for watchdog drivers in SPL. A watchdog is
 	  typically a hardware peripheral which can reset the system when it
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 4ddeff9b51..c595697fc5 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -603,7 +603,7 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 	spl_board_init();
 #endif
 
-#if defined(CONFIG_SPL_WATCHDOG_SUPPORT) && defined(CONFIG_WDT)
+#if defined(CONFIG_SPL_WATCHDOG_SUPPORT) && CONFIG_IS_ENABLED(WDT)
 	initr_watchdog();
 #endif
 
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index b01dbc446d..0330a3b3a1 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -161,4 +161,11 @@ config WDT_MPC8xx
 	help
 	   Select this to enable mpc8xx watchdog timer
 
+config SPL_WDT
+	bool "Enable driver model for watchdog timer drivers in SPL"
+	depends on SPL_DM
+	help
+	  Enable driver model for watchdog timer in SPL.
+	  This is similar to CONFIG_WDT in U-Boot.
+
 endmenu
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 6f20e73810..fe8023bda2 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -16,7 +16,7 @@ obj-$(CONFIG_OMAP_WATCHDOG) += omap_wdt.o
 obj-$(CONFIG_DESIGNWARE_WATCHDOG) += designware_wdt.o
 obj-$(CONFIG_TANGIER_WATCHDOG) += tangier_wdt.o
 obj-$(CONFIG_ULP_WATCHDOG) += ulp_wdog.o
-obj-$(CONFIG_WDT) += wdt-uclass.o
+obj-$(CONFIG_$(SPL_TPL_)WDT) += wdt-uclass.o
 obj-$(CONFIG_WDT_SANDBOX) += sandbox_wdt.o
 obj-$(CONFIG_WDT_ARMADA_37XX) += armada-37xx-wdt.o
 obj-$(CONFIG_WDT_ASPEED) += ast_wdt.o
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index 02a3ed6838..7c2220643b 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -137,7 +137,7 @@ typedef struct global_data {
 #if defined(CONFIG_TRANSLATION_OFFSET)
 	fdt_addr_t translation_offset;	/* optional translation offset */
 #endif
-#if defined(CONFIG_WDT)
+#if CONFIG_IS_ENABLED(WDT)
 	struct udevice *watchdog_dev;
 #endif
 } gd_t;
diff --git a/include/wdt.h b/include/wdt.h
index aa77d3e9b4..5bcff24ab3 100644
--- a/include/wdt.h
+++ b/include/wdt.h
@@ -106,7 +106,7 @@ struct wdt_ops {
 	int (*expire_now)(struct udevice *dev, ulong flags);
 };
 
-#if defined(CONFIG_WDT)
+#if CONFIG_IS_ENABLED(WDT)
 #ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS
 #define CONFIG_WATCHDOG_TIMEOUT_MSECS	(60 * 1000)
 #endif
-- 
2.20.1