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| author | Dale Farnsworth <dale@farnsworth.org> | 2007-07-24 11:12:24 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-07-24 21:16:02 +0000 |
| commit | 7e07a15913e2e1fd99fb77c4c848437bd99a8d5f (patch) | |
| tree | b53e6f8c4e2ad9675fb2031a12e6b75f44d5b6f1 /arch | |
| parent | 8a5cfa648347ab04e63a7f5e3699768d1f9bf00d (diff) | |
| download | linux-7e07a15913e2e1fd99fb77c4c848437bd99a8d5f.tar.gz linux-7e07a15913e2e1fd99fb77c4c848437bd99a8d5f.tar.bz2 linux-7e07a15913e2e1fd99fb77c4c848437bd99a8d5f.zip | |
[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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/boot/dts/prpmc2800.dts | 6 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/mv64x60_dev.c | 64 |
2 files changed, 70 insertions, 0 deletions
diff --git a/arch/powerpc/boot/dts/prpmc2800.dts b/arch/powerpc/boot/dts/prpmc2800.dts index 699d0df574d5..5300b50cdc2f 100644 --- a/arch/powerpc/boot/dts/prpmc2800.dts +++ b/arch/powerpc/boot/dts/prpmc2800.dts @@ -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"; diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c index b618fa60aef3..548a32082e4a 100644 --- a/arch/powerpc/sysdev/mv64x60_dev.c +++ b/arch/powerpc/sysdev/mv64x60_dev.c @@ -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(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: |