linux-kernel - [PATCH v5 2/6] fpga manager: add sysfs interface document

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Message-ID: <1418835289-15752-3-git-send-email-atull@opensource.altera.com>
Date:	Wed, 17 Dec 2014 10:54:45 -0600
From:	<atull@...nsource.altera.com>
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	Alan Tull <atull@...nsource.altera.com>
Subject: [PATCH v5 2/6] fpga manager: add sysfs interface document

From: Alan Tull <atull@...nsource.altera.com>

Add documentation under drivers/staging for new fpga manager's
sysfs interface.

Signed-off-by: Alan Tull <atull@...nsource.altera.com>
---
v5  : (actually second version, but keeping version numbers
      aligned with rest of patch series)
      Move document to drivers/staging/fpga/Documentation/ABI
---
 .../Documentation/ABI/sysfs-class-fpga-manager     |   38 ++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 drivers/staging/fpga/Documentation/ABI/sysfs-class-fpga-manager

diff --git a/drivers/staging/fpga/Documentation/ABI/sysfs-class-fpga-manager b/drivers/staging/fpga/Documentation/ABI/sysfs-class-fpga-manager
new file mode 100644
index 0000000..eb600f2
--- /dev/null
+++ b/drivers/staging/fpga/Documentation/ABI/sysfs-class-fpga-manager
@@ -0,0 +1,38 @@
+What:		/sys/class/fpga_manager/<fpga>/name
+Date:		October 2014
+KernelVersion:	3.18
+Contact:	Alan Tull <atull@...nsource.altera.com>
+Description:	Name of low level driver.
+
+What:		/sys/class/fpga_manager/<fpga>/firmware
+Date:		October 2014
+KernelVersion:	3.18
+Contact:	Alan Tull <atull@...nsource.altera.com>
+Description:	Name of the FPGA image file to load using firmware class.
+
+What:		/sys/class/fpga_manager/<fpga>/reset
+Date:		October 2014
+KernelVersion:	3.18
+Contact:	Alan Tull <atull@...nsource.altera.com>
+Description:	Write 1 to reset the FPGA
+
+What:		/sys/class/fpga_manager/<fpga>/state
+Date:		October 2014
+KernelVersion:	3.18
+Contact:	Alan Tull <atull@...nsource.altera.com>
+Description:	Read state of fpga framework state machine as a string.
+		Valid states may vary by manufacturer; superset is:
+		* unknown		= can't determine state
+		* power_off		= FPGA power is off
+		* power_up		= FPGA reports power is up
+		* reset			= FPGA held in reset state
+		* firmware_request	= firmware class request in progress
+		* firmware_request_err	= firmware request failed
+		* write_init		= FPGA being prepared for programming
+		* write_init_err	= Error while preparing FPGA for
+					  programming
+		* write			= FPGA ready to receive image data
+		* write_err		= Error while programming
+		* write_complete	= Doing post programming steps
+		* write_complete_err	= Error while doing post programming
+		* operating		= FPGA is programmed and operating
-- 
1.7.9.5

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