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Message-ID: <20070724181224.GC27445@xyzzy.farnsworth.org>
Date: Tue, 24 Jul 2007 11:12:24 -0700
From: "Dale Farnsworth" <dale@...nsworth.org>
To: Wim Van Sebroeck <wim@...ana.be>, linux-kernel@...r.kernel.org
Subject: [PATCH 03/11] mv64x60_wdt: Add arch/powerpc platform support
Add support for arch/powerpc, specifically for the prpmc2800 platform.
Signed-off-by: Dale Farnsworth <dale@...nsworth.org>
---
arch/powerpc/boot/dts/prpmc2800.dts | 6 ++
arch/powerpc/sysdev/mv64x60_dev.c | 64 ++++++++++++++++++++++++++
drivers/char/watchdog/mv64x60_wdt.c | 2
include/asm-ppc/mv64x60.h | 8 ---
include/linux/mv643xx.h | 8 +++
5 files changed, 79 insertions(+), 9 deletions(-)
Index: linux-2.6-powerpc-wdt/arch/powerpc/boot/dts/prpmc2800.dts
===================================================================
--- linux-2.6-powerpc-wdt.orig/arch/powerpc/boot/dts/prpmc2800.dts 2007-07-20 16:41:08.000000000 +0000
+++ linux-2.6-powerpc-wdt/arch/powerpc/boot/dts/prpmc2800.dts 2007-07-20 16:42:09.000000000 +0000
@@ -207,6 +207,12 @@
interrupt-parent = <&/mv64x60/pic>;
};
+ wdt@...0 { /* watchdog timer */
+ compatible = "marvell,mv64x60-wdt";
+ reg = <b410 8>;
+ timeout = <a>; /* wdt timeout in seconds */
+ };
+
i2c@...0 {
device_type = "i2c";
compatible = "marvell,mv64x60-i2c";
Index: linux-2.6-powerpc-wdt/arch/powerpc/sysdev/mv64x60_dev.c
===================================================================
--- linux-2.6-powerpc-wdt.orig/arch/powerpc/sysdev/mv64x60_dev.c 2007-07-20 16:41:08.000000000 +0000
+++ linux-2.6-powerpc-wdt/arch/powerpc/sysdev/mv64x60_dev.c 2007-07-20 16:45:26.000000000 +0000
@@ -390,6 +390,61 @@ error:
return err;
}
+/*
+ * Create mv64x60_wdt platform devices
+ */
+static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
+{
+ struct resource r;
+ struct platform_device *pdev;
+ struct mv64x60_wdt_pdata pdata;
+ const unsigned int *prop;
+ int err;
+
+ err = of_address_to_resource(np, 0, &r);
+ if (err)
+ return err;
+
+ memset(&pdata, 0, sizeof(pdata));
+
+ prop = of_get_property(np, "timeout", NULL);
+ if (!prop)
+ return -ENODEV;
+ pdata.timeout = *prop;
+
+ np = of_get_parent(np);
+ if (!np)
+ return -ENODEV;
+
+ prop = of_get_property(np, "clock-frequency", NULL);
+ of_node_put(np);
+ if (!prop)
+ return -ENODEV;
+ pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
+
+ pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
+ if (!pdev)
+ return -ENOMEM;
+
+ err = platform_device_add_resources(pdev, &r, 1);
+ if (err)
+ goto error;
+
+ err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+ if (err)
+ goto error;
+
+ err = platform_device_add(pdev);
+ if (err)
+ goto error;
+
+ return 0;
+
+error:
+ platform_device_put(pdev);
+ return err;
+}
+
static int __init mv64x60_device_setup(void)
{
struct device_node *np = NULL;
@@ -414,6 +469,15 @@ static int __init mv64x60_device_setup(v
if ((err = mv64x60_i2c_device_setup(np, id)))
goto error;
+ /* support up to one watchdog timer */
+ np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
+ if (np) {
+ if ((err = mv64x60_wdt_device_setup(np, id)))
+ goto error;
+ of_node_put(np);
+ }
+
+
return 0;
error:
Index: linux-2.6-powerpc-wdt/drivers/char/watchdog/mv64x60_wdt.c
===================================================================
--- linux-2.6-powerpc-wdt.orig/drivers/char/watchdog/mv64x60_wdt.c 2007-07-20 16:41:37.000000000 +0000
+++ linux-2.6-powerpc-wdt/drivers/char/watchdog/mv64x60_wdt.c 2007-07-20 16:48:00.000000000 +0000
@@ -23,7 +23,7 @@
#include <linux/watchdog.h>
#include <linux/platform_device.h>
-#include <asm/mv64x60.h>
+#include <linux/mv643xx.h>
#include <asm/uaccess.h>
#include <asm/io.h>
Index: linux-2.6-powerpc-wdt/include/asm-ppc/mv64x60.h
===================================================================
--- linux-2.6-powerpc-wdt.orig/include/asm-ppc/mv64x60.h 2007-07-20 16:41:11.000000000 +0000
+++ linux-2.6-powerpc-wdt/include/asm-ppc/mv64x60.h 2007-07-20 16:42:09.000000000 +0000
@@ -120,14 +120,6 @@ extern spinlock_t mv64x60_lock;
#define MV64x60_64BIT_WIN_COUNT 24
-/* Watchdog Platform Device, Driver Data */
-#define MV64x60_WDT_NAME "mv64x60_wdt"
-
-struct mv64x60_wdt_pdata {
- int timeout; /* watchdog expiry in seconds, default 10 */
- int bus_clk; /* bus clock in MHz, default 133 */
-};
-
/*
* Define a structure that's used to pass in config information to the
* core routines.
Index: linux-2.6-powerpc-wdt/include/linux/mv643xx.h
===================================================================
--- linux-2.6-powerpc-wdt.orig/include/linux/mv643xx.h 2007-07-20 16:41:08.000000000 +0000
+++ linux-2.6-powerpc-wdt/include/linux/mv643xx.h 2007-07-20 16:42:09.000000000 +0000
@@ -1306,4 +1306,12 @@ struct mv643xx_eth_platform_data {
u8 mac_addr[6]; /* mac address if non-zero*/
};
+/* Watchdog Platform Device, Driver Data */
+#define MV64x60_WDT_NAME "mv64x60_wdt"
+
+struct mv64x60_wdt_pdata {
+ int timeout; /* watchdog expiry in seconds, default 10 */
+ int bus_clk; /* bus clock in MHz, default 133 */
+};
+
#endif /* __ASM_MV643XX_H */
-
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