[WATCHDOG] mv64x60_wdt: Add arch/powerpc platform support

Add support for arch/powerpc, specifically for the prpmc2800 platform.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Dale Farnsworth 2007-07-24 11:12:24 -07:00 committed by Wim Van Sebroeck
parent 8a5cfa6483
commit 7e07a15913
5 changed files with 79 additions and 9 deletions

View file

@ -207,6 +207,12 @@
interrupt-parent = <&/mv64x60/pic>;
};
wdt@b410 { /* watchdog timer */
compatible = "marvell,mv64x60-wdt";
reg = <b410 8>;
timeout = <a>; /* wdt timeout in seconds */
};
i2c@c000 {
device_type = "i2c";
compatible = "marvell,mv64x60-i2c";

View file

@ -390,6 +390,61 @@ static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
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(void)
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:

View file

@ -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>

View file

@ -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.

View file

@ -1302,4 +1302,12 @@ 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 */