watchdog: simatic-ipc-wdt: convert to use P2SB accessor

Since we have a common P2SB accessor in tree we may use it instead of
open coded variants.

Replace custom code by p2sb_bar() call.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 32fd376..0796f6a 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1647,6 +1647,7 @@ config SIEMENS_SIMATIC_IPC_WDT
        tristate "Siemens Simatic IPC Watchdog"
        depends on SIEMENS_SIMATIC_IPC
        select WATCHDOG_CORE
+       select P2SB
        help
          This driver adds support for several watchdogs found in Industrial
          PCs from Siemens.

diff --git a/drivers/watchdog/simatic-ipc-wdt.c b/drivers/watchdog/simatic-ipc-wdt.c
index 8bac793..6599695 100644 (file)
--- a/drivers/watchdog/simatic-ipc-wdt.c
+++ b/drivers/watchdog/simatic-ipc-wdt.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/platform_data/x86/p2sb.h>
 #include <linux/platform_data/x86/simatic-ipc-base.h>
 #include <linux/platform_device.h>
 #include <linux/sizes.h>
@@ -54,9 +55,9 @@ static struct resource io_resource_trigger =
        DEFINE_RES_IO_NAMED(WD_TRIGGER_IOADR, SZ_1,
                            KBUILD_MODNAME " WD_TRIGGER_IOADR");
 
-/* the actual start will be discovered with pci, 0 is a placeholder */
+/* the actual start will be discovered with p2sb, 0 is a placeholder */
 static struct resource mem_resource =
-       DEFINE_RES_MEM_NAMED(0, SZ_4, "WD_RESET_BASE_ADR");
+       DEFINE_RES_MEM_NAMED(0, 0, "WD_RESET_BASE_ADR");
 
 static u32 wd_timeout_table[] = {2, 4, 6, 8, 16, 32, 48, 64 };
 static void __iomem *wd_reset_base_addr;
@@ -150,6 +151,7 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev)
        struct simatic_ipc_platform *plat = pdev->dev.platform_data;
        struct device *dev = &pdev->dev;
        struct resource *res;
+       int ret;
 
        switch (plat->devmode) {
        case SIMATIC_IPC_DEVICE_227E:
@@ -190,15 +192,14 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev)
        if (plat->devmode == SIMATIC_IPC_DEVICE_427E) {
                res = &mem_resource;
 
-               /* get GPIO base from PCI */
-               res->start = simatic_ipc_get_membase0(PCI_DEVFN(0x1f, 1));
-               if (res->start == 0)
-                       return -ENODEV;
+               ret = p2sb_bar(NULL, 0, res);
+               if (ret)
+                       return ret;
 
                /* do the final address calculation */
                res->start = res->start + (GPIO_COMMUNITY0_PORT_ID << 16) +
                             PAD_CFG_DW0_GPP_A_23;
-               res->end += res->start;
+               res->end = res->start + SZ_4 - 1;
 
                wd_reset_base_addr = devm_ioremap_resource(dev, res);
                if (IS_ERR(wd_reset_base_addr))