Merge tag 'tags/omap-for-v3.8/devel-prcm-signed' into omap-for-v3.8/cleanup-headers-prepare-multiplatform-v3

omap prcm changes via Paul Walmsley <paul@pwsan.com>:

Some miscellaneous OMAP hwmod changes for 3.8, along with a PRM
change needed for one of the hwmod patches to function.

Basic test logs for this branch on top of Tony's
omap-for-v3.8/clock branch at commit
558a0780b0a04862a678f7823215424b4e5501f9 are here:

http://www.pwsan.com/omap/testlogs/hwmod_devel_a_3.8/20121121161522/

However, omap-for-v3.8/clock at 558a0780 does not include some fixes
that are needed for a successful test.  With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:

http://www.pwsan.com/omap/testlogs/TEST_hwmod_devel_a_3.8/20121121162719/

which indicate that the series tests cleanly.

Conflicts:
	arch/arm/mach-omap2/cm33xx.c
	arch/arm/mach-omap2/io.c
	arch/arm/mach-omap2/prm_common.c

3 files changed, 59 insertions, 5 deletions

diff --git a/arch/arm/mach-omap1/common.h b/arch/arm/mach-omap1/common.h
index fc8c9449eba8..b53e0854422f 100644
--- a/arch/arm/mach-omap1/common.h
+++ b/arch/arm/mach-omap1/common.h
@@ -93,4 +93,6 @@ extern int ocpi_enable(void);
 static inline int ocpi_enable(void) { return 0; }
 #endif
 
+extern u32 omap1_get_reset_sources(void);
+
 #endif /* __ARCH_ARM_MACH_OMAP1_COMMON_H */
diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index 7155ed8b97f8..0af635205e8a 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>
@@ -447,18 +449,31 @@ 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
diff --git a/arch/arm/mach-omap1/reset.c b/arch/arm/mach-omap1/reset.c
index b17709103866..5eebd7e889d0 100644
--- a/arch/arm/mach-omap1/reset.c
+++ b/arch/arm/mach-omap1/reset.c
@@ -4,12 +4,24 @@
 #include <linux/kernel.h>
 #include <linux/io.h>
 
-#include <plat/prcm.h>
-
 #include <mach/hardware.h>
 
+#include "iomap.h"
 #include "common.h"
 
+/* ARM_SYSST bit shifts related to SoC reset sources */
+#define ARM_SYSST_POR_SHIFT                             5
+#define ARM_SYSST_EXT_RST_SHIFT                         4
+#define ARM_SYSST_ARM_WDRST_SHIFT                       2
+#define ARM_SYSST_GLOB_SWRST_SHIFT                      1
+
+/* Standardized reset source bits (across all OMAP SoCs) */
+#define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT               0
+#define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT               1
+#define OMAP_MPU_WD_RST_SRC_ID_SHIFT                    3
+#define OMAP_EXTWARM_RST_SRC_ID_SHIFT                   5
+
+
 void omap1_restart(char mode, const char *cmd)
 {
         /*
@@ -23,3 +35,28 @@ void omap1_restart(char mode, const char *cmd)
 
         omap_writew(1, ARM_RSTCT1);
 }
+
+/**
+ * omap1_get_reset_sources - return the source of the SoC's last reset
+ *
+ * Returns bits that represent the last reset source for the SoC.  The
+ * format is standardized across OMAPs for use by the OMAP watchdog.
+ */
+u32 omap1_get_reset_sources(void)
+{
+        u32 ret = 0;
+        u16 rs;
+
+        rs = __raw_readw(OMAP1_IO_ADDRESS(ARM_SYSST));
+
+        if (rs & (1 << ARM_SYSST_POR_SHIFT))
+                ret |= 1 << OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT;
+        if (rs & (1 << ARM_SYSST_EXT_RST_SHIFT))
+                ret |= 1 << OMAP_EXTWARM_RST_SRC_ID_SHIFT;
+        if (rs & (1 << ARM_SYSST_ARM_WDRST_SHIFT))
+                ret |= 1 << OMAP_MPU_WD_RST_SRC_ID_SHIFT;
+        if (rs & (1 << ARM_SYSST_GLOB_SWRST_SHIFT))
+                ret |= 1 << OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT;
+
+        return ret;
+}