From: Kevin Hilman <[email protected]> In order to help differentiate omap_devices from normal platform_devices, make them all a parent of a new omap_bus device.
Then, in order to determine if a platform_device is also an omap_device, checking the parent is all that is needed. Users of this feature are the runtime PM core for OMAP, where we need to know if a device being passed in is an omap_device or not in order to know whether to call the omap_device API with it. In addition, all omap_devices will now show up under /sys/devices/omap instead of /sys/devices/platform Signed-off-by: Kevin Hilman <[email protected]> --- arch/arm/plat-omap/include/plat/omap_device.h | 2 ++ arch/arm/plat-omap/omap_device.c | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h index bad4c3d..26d0c10 100644 --- a/arch/arm/plat-omap/include/plat/omap_device.h +++ b/arch/arm/plat-omap/include/plat/omap_device.h @@ -36,6 +36,8 @@ #include <plat/omap_hwmod.h> +extern struct device omap_bus; + /* omap_device._state values */ #define OMAP_DEVICE_STATE_UNKNOWN 0 #define OMAP_DEVICE_STATE_ENABLED 1 diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index 7f05f49..3e215fa 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -463,8 +463,11 @@ int omap_early_device_register(struct omap_device *od) */ int omap_device_register(struct omap_device *od) { + struct platform_device *pdev = &od->pdev; + pr_debug("omap_device: %s: registering\n", od->pdev.name); + pdev->dev.parent = &omap_bus; return platform_device_register(&od->pdev); } @@ -737,3 +740,18 @@ int omap_device_enable_clocks(struct omap_device *od) /* XXX pass along return value here? */ return 0; } + +struct device omap_bus = { + .init_name = "omap", +}; + +static int __init omap_device_init(void) +{ + int error = 0; + + printk("%s:\n", __func__); + error = device_register(&omap_bus); + + return error; +} +core_initcall(omap_device_init); -- 1.7.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
