From 42bfad4f71637c4eb4791aa8062063c4a8526522 Mon Sep 17 00:00:00 2001
From: Michael Buesch <mb@bu3sch.de>
Date: Tue, 19 Feb 2008 12:41:30 +0100
Subject: ssb: Fix watchdog access for devices without a chipcommon

This fixes the SSB watchdog access for devices without a chipcommon.
These devices have the watchdog on the extif.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/ssb/Kconfig        |  6 ++++++
 drivers/ssb/Makefile       |  1 +
 drivers/ssb/driver_extif.c |  6 ++++++
 drivers/ssb/embedded.c     | 26 ++++++++++++++++++++++++++
 4 files changed, 39 insertions(+)
 create mode 100644 drivers/ssb/embedded.c

(limited to 'drivers')

diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig
index d976660cb7f..78fd33125e0 100644
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -105,6 +105,12 @@ config SSB_DRIVER_MIPS
 
 	  If unsure, say N
 
+# Assumption: We are on embedded, if we compile the MIPS core.
+config SSB_EMBEDDED
+	bool
+	depends on SSB_DRIVER_MIPS
+	default y
+
 config SSB_DRIVER_EXTIF
 	bool "SSB Broadcom EXTIF core driver (EXPERIMENTAL)"
 	depends on SSB_DRIVER_MIPS && EXPERIMENTAL
diff --git a/drivers/ssb/Makefile b/drivers/ssb/Makefile
index 7be39759580..e235144add7 100644
--- a/drivers/ssb/Makefile
+++ b/drivers/ssb/Makefile
@@ -1,5 +1,6 @@
 # core
 ssb-y					+= main.o scan.o
+ssb-$(CONFIG_SSB_EMBEDDED)		+= embedded.o
 
 # host support
 ssb-$(CONFIG_SSB_PCIHOST)		+= pci.o pcihost_wrapper.o
diff --git a/drivers/ssb/driver_extif.c b/drivers/ssb/driver_extif.c
index fe55eb8b038..b1899f422a5 100644
--- a/drivers/ssb/driver_extif.c
+++ b/drivers/ssb/driver_extif.c
@@ -110,6 +110,12 @@ void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
 	*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
 }
 
+void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
+				  u32 ticks)
+{
+	extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks);
+}
+
 u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
 {
 	return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;
diff --git a/drivers/ssb/embedded.c b/drivers/ssb/embedded.c
new file mode 100644
index 00000000000..751f58ac612
--- /dev/null
+++ b/drivers/ssb/embedded.c
@@ -0,0 +1,26 @@
+/*
+ * Sonics Silicon Backplane
+ * Embedded systems support code
+ *
+ * Copyright 2005-2008, Broadcom Corporation
+ * Copyright 2006-2008, Michael Buesch <mb@bu3sch.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_embedded.h>
+
+
+int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
+{
+	if (ssb_chipco_available(&bus->chipco)) {
+		ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
+		return 0;
+	}
+	if (ssb_extif_available(&bus->extif)) {
+		ssb_extif_watchdog_timer_set(&bus->extif, ticks);
+		return 0;
+	}
+	return -ENODEV;
+}
-- 
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