[PATCHv3 2/2] watchdog: pika_wdt: enable COMPILE_TEST builds

[Rosen Penev <rosenp@gmail.com>]

Replace powerpc-specific I/O accessors (in_be32/out_be32) with
generic ones (ioread32be/iowrite32be) so the driver can be
compile-tested on other architectures.  Relax the Kconfig
dependency accordingly and add the required HAS_IOMEM.

Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/watchdog/Kconfig    | 3 ++-
 drivers/watchdog/pika_wdt.c | 8 ++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 8319c503319a..855736eaca2c 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -2040,7 +2040,8 @@ config 8xxx_WDT

 config PIKA_WDT
 	tristate "PIKA FPGA Watchdog"
-	depends on WARP || (PPC64 && COMPILE_TEST)
+	depends on WARP || COMPILE_TEST
+	depends on HAS_IOMEM
 	default WARP
 	help
 	  This enables the watchdog in the PIKA FPGA. Currently used on
diff --git a/drivers/watchdog/pika_wdt.c b/drivers/watchdog/pika_wdt.c
index d567103ec5e4..e599aff8329b 100644
--- a/drivers/watchdog/pika_wdt.c
+++ b/drivers/watchdog/pika_wdt.c
@@ -77,10 +77,10 @@ static inline void pikawdt_reset(void)
 	 *           seconds. Valid ranges are 1 to 15 seconds. The value can
 	 *           be modified dynamically.
 	 */
-	unsigned reset = in_be32(pikawdt_private.fpga + 0x14);
+	unsigned reset = ioread32be(pikawdt_private.fpga + 0x14);
 	/* enable with max timeout - 15 seconds */
 	reset |= (1 << 7) + (WDT_HW_TIMEOUT << 8);
-	out_be32(pikawdt_private.fpga + 0x14, reset);
+	iowrite32be(reset, pikawdt_private.fpga + 0x14);
 }

 /*
@@ -243,7 +243,7 @@ static int __init pikawdt_init(void)
 		return -ENOMEM;
 	}

-	ident.firmware_version = in_be32(pikawdt_private.fpga + 0x1c) & 0xffff;
+	ident.firmware_version = ioread32be(pikawdt_private.fpga + 0x1c) & 0xffff;

 	/* POST information is in the sd area. */
 	np = of_find_compatible_node(NULL, NULL, "pika,fpga-sd");
@@ -265,7 +265,7 @@ static int __init pikawdt_init(void)
 	 * Bit 31,   WDOG: Set to 1 when the last reset was caused by a watchdog
 	 *           timeout.
 	 */
-	post1 = in_be32(fpga + 0x40);
+	post1 = ioread32be(fpga + 0x40);
 	if (post1 & 0x80000000)
 		pikawdt_private.bootstatus = WDIOF_CARDRESET;

--
2.54.0