ARM: OMAP2+: WDT: move init; add read_reset_sources pdata function pointer

The OMAP watchdog timer driver directly calls a function exported by
code in arch/arm/mach-omap2.  This is not good; it tightly couples
this driver to the mach-omap2 integration code.  Instead, add a
temporary platform_data function pointer to abstract this function
call.  A subsequent patch will convert the watchdog driver to use this
function pointer.

This patch also moves the device creation code out of
arch/arm/mach-omap2/devices.c and into arch/arm/mach-omap2/wd_timer.c.
This is another step towards the removal of
arch/arm/mach-omap2/devices.c.

Cc: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
[paul@pwsan.com: skip wd_timer device creation when DT blob is present]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 18 insertions, 3 deletions

diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index 645668e2b1d5..745031870ce4 100644
--- a/arch/arm/mach-omap1/devices.c
+++ b/arch/arm/mach-omap1/devices.c
@@ -17,6 +17,8 @@
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
 
+#include <linux/platform_data/omap-wd-timer.h>
+
 #include <asm/mach/map.h>
 
 #include <mach/tc.h>
@@ -448,18 +450,31 @@ static struct resource wdt_resources[] = {
 };
 
 static struct platform_device omap_wdt_device = {
-        .name      = "omap_wdt",
-        .id          = -1,
+        .name           = "omap_wdt",
+        .id             = -1,
         .num_resources  = ARRAY_SIZE(wdt_resources),
         .resource       = wdt_resources,
 };
 
 static int __init omap_init_wdt(void)
 {
+        struct omap_wd_timer_platform_data pdata;
+        int ret;
+
         if (!cpu_is_omap16xx())
                 return -ENODEV;
 
-        return platform_device_register(&omap_wdt_device);
+        pdata.read_reset_sources = omap1_get_reset_sources;
+
+        ret = platform_device_register(&omap_wdt_device);
+        if (!ret) {
+                ret = platform_device_add_data(&omap_wdt_device, &pdata,
+                                               sizeof(pdata));
+                if (ret)
+                        platform_device_del(&omap_wdt_device);
+        }
+
+        return ret;
 }
 subsys_initcall(omap_init_wdt);
 #endif