linux-kernel - [RFC PATCH 1/4] PLATFORM: introduce structure to bind async platform data to a dev path name

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Message-ID: <20110312223212.27020.9839.stgit@otae.warmcat.com>
Date:	Sat, 12 Mar 2011 22:32:12 +0000
From:	Andy Green <andy@...mcat.com>
To:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:	patches@...aro.org, Andy Green <andy.green@...aro.org>
Subject: [RFC PATCH 1/4] PLATFORM: introduce structure to bind async platform
 data to a dev path name

This structure allows tagging arbitrary platform_data that can't be attached
to a device until after it is probed, with the device path name that it is
to be attached to.

Signed-off-by: Andy Green <andy.green@...aro.org>
---

 include/linux/platform_device.h |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 2e700ec..d8c0ba9 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -193,4 +193,21 @@ static inline char *early_platform_driver_setup_func(void)		\
 }
 #endif /* MODULE */
 
+/**
+ * platform_async_platform_data - maps a known bus + device name on to
+ *				  platform_data to be attached to that device
+ *				  when it is eventually instantiated.  For use
+ *				  with onboard devices on buses that probe
+ *				  asynchronously.  Device path fields must
+ *				  be separated with '/'.
+ * @device_path:	bus / device path, eg, "usb1/1-1/1-1.1"
+ * @platform_data:	platform_data to attach to device matching the
+ *			device_path
+ */
+
+struct platform_async_platform_data {
+	const char *device_path;
+	void *platform_data;
+};
+
 #endif /* _PLATFORM_DEVICE_H_ */

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