[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>
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8a5cfa6483
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7e07a15913
5 changed files with 79 additions and 9 deletions
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@ -207,6 +207,12 @@
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interrupt-parent = <&/mv64x60/pic>;
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};
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wdt@b410 { /* watchdog timer */
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compatible = "marvell,mv64x60-wdt";
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reg = <b410 8>;
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timeout = <a>; /* wdt timeout in seconds */
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};
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i2c@c000 {
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device_type = "i2c";
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compatible = "marvell,mv64x60-i2c";
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@ -390,6 +390,61 @@ static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
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return err;
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}
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/*
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* Create mv64x60_wdt platform devices
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*/
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static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
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{
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struct resource r;
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struct platform_device *pdev;
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struct mv64x60_wdt_pdata pdata;
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const unsigned int *prop;
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int err;
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err = of_address_to_resource(np, 0, &r);
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if (err)
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return err;
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memset(&pdata, 0, sizeof(pdata));
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prop = of_get_property(np, "timeout", NULL);
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if (!prop)
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return -ENODEV;
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pdata.timeout = *prop;
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np = of_get_parent(np);
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if (!np)
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return -ENODEV;
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prop = of_get_property(np, "clock-frequency", NULL);
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of_node_put(np);
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if (!prop)
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return -ENODEV;
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pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
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pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
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if (!pdev)
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return -ENOMEM;
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err = platform_device_add_resources(pdev, &r, 1);
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if (err)
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goto error;
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err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
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if (err)
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goto error;
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err = platform_device_add(pdev);
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if (err)
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goto error;
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return 0;
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error:
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platform_device_put(pdev);
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return err;
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}
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static int __init mv64x60_device_setup(void)
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{
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struct device_node *np = NULL;
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@ -414,6 +469,15 @@ static int __init mv64x60_device_setup(void)
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if ((err = mv64x60_i2c_device_setup(np, id)))
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goto error;
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/* support up to one watchdog timer */
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np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
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if (np) {
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if ((err = mv64x60_wdt_device_setup(np, id)))
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goto error;
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of_node_put(np);
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}
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return 0;
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error:
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@ -23,7 +23,7 @@
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#include <linux/watchdog.h>
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#include <linux/platform_device.h>
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#include <asm/mv64x60.h>
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#include <linux/mv643xx.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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@ -120,14 +120,6 @@ extern spinlock_t mv64x60_lock;
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#define MV64x60_64BIT_WIN_COUNT 24
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/* Watchdog Platform Device, Driver Data */
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#define MV64x60_WDT_NAME "mv64x60_wdt"
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struct mv64x60_wdt_pdata {
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int timeout; /* watchdog expiry in seconds, default 10 */
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int bus_clk; /* bus clock in MHz, default 133 */
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};
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/*
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* Define a structure that's used to pass in config information to the
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* core routines.
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@ -1302,4 +1302,12 @@ struct mv643xx_eth_platform_data {
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u8 mac_addr[6]; /* mac address if non-zero*/
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};
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/* Watchdog Platform Device, Driver Data */
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#define MV64x60_WDT_NAME "mv64x60_wdt"
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struct mv64x60_wdt_pdata {
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int timeout; /* watchdog expiry in seconds, default 10 */
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int bus_clk; /* bus clock in MHz, default 133 */
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};
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#endif /* __ASM_MV643XX_H */
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