From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@deeprootsystems.com (Kevin Hilman) Date: Wed, 15 Sep 2010 16:55:46 -0700 Subject: [PATCH 10/10] OMAP: omap_device: make all devices a child of a new parent device In-Reply-To: <1284594946-28963-1-git-send-email-khilman@deeprootsystems.com> References: <1284594946-28963-1-git-send-email-khilman@deeprootsystems.com> Message-ID: <1284594946-28963-11-git-send-email-khilman@deeprootsystems.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org In order to help differentiate omap_devices from normal platform_devices, make them all a parent of a new common parent 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 Acked-by: Paul Walmsley Signed-off-by: Kevin Hilman --- arch/arm/plat-omap/include/plat/omap_device.h | 2 ++ arch/arm/plat-omap/omap_device.c | 12 ++++++++++++ 2 files changed, 14 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..28e2d1a 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 +extern struct device omap_device_parent; + /* 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..8215b1b 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -465,6 +465,7 @@ int omap_device_register(struct omap_device *od) { pr_debug("omap_device: %s: registering\n", od->pdev.name); + od->pdev.dev.parent = &omap_device_parent; return platform_device_register(&od->pdev); } @@ -737,3 +738,14 @@ int omap_device_enable_clocks(struct omap_device *od) /* XXX pass along return value here? */ return 0; } + +struct device omap_device_parent = { + .init_name = "omap", + .parent = &platform_bus, +}; + +static int __init omap_device_init(void) +{ + return device_register(&omap_device_parent); +} +core_initcall(omap_device_init); -- 1.7.2.1