Changes in debugfs-driver-dcc

13763fb9 - soc: qcom: dcc: rewrite description of dcc sysfs files

Fri, 30 Dec 2022 13:50:31 +0000

soc: qcom: dcc: rewrite description of dcc sysfs filesThe description of dcc sysfs files is somewhat confusing and not effective.Rewrite it to be clear.While at it, also use literal code block for config sysfs examples andremove redundant examples that are obvious.Signed-off-by: Bagas Sanjaya Acked-by: Souradeep Chowdhury Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20221230135030.17002-3-bagasdotme@gmail.com List of files: /linux-6.15/Documentation/ABI/testing/debugfs-driver-dcc

dc2f5a49 - soc: qcom: dcc: Fix examples list on /sys/kernel/debug/dcc/.../[list-number]/config documentation

Fri, 30 Dec 2022 13:50:30 +0000

soc: qcom: dcc: Fix examples list on /sys/kernel/debug/dcc/.../[list-number]/config documentationkernel test robot reported htmldocs warnings:Documentation/ABI/testing/debugfs-driver-dcc:34: WARNING: Unexpected indentation.Documentation/ABI/testing/debugfs-driver-dcc:34: WARNING: Block quote ends without a blank line; unexpected unindent.Fix these by fixing numbered list syntax on description of/sys/kernel/debug/dcc/.../[list-number]/config, including adding blank lineseparators as appropriate.Link: https://lore.kernel.org/linux-doc/202212300426.eMLsZsvA-lkp@intel.com/Fixes: 4cbe60cf5ad622 ("soc: qcom: dcc: Add driver support for Data Capture and Compare unit(DCC)")Reported-by: kernel test robot Signed-off-by: Bagas Sanjaya Acked-by: Souradeep Chowdhury Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20221230135030.17002-2-bagasdotme@gmail.com List of files: /linux-6.15/Documentation/ABI/testing/debugfs-driver-dcc

4cbe60cf - soc: qcom: dcc: Add driver support for Data Capture and Compare unit(DCC)

Tue, 27 Dec 2022 15:22:46 +0000

soc: qcom: dcc: Add driver support for Data Capture and Compare unit(DCC)The DCC is a DMA Engine designed to capture and store dataduring system crash or software triggers. The DCC operatesbased on user inputs via the debugfs interface. The user givesaddresses as inputs and these addresses are stored in thedcc sram. In case of a system crash or a manual softwaretrigger by the user through the debugfs interface,the dcc captures and stores the values at these addresses.This patch contains the driver which has all the methodspertaining to the debugfs interface, auxiliary functions tosupport all the four fundamental operations of dcc namelyread, write, read/modify/write and loop. The probe methodhere instantiates all the resources necessary for dcc tooperate mainly the dedicated dcc sram where it stores thevalues. The DCC driver can be used for debugging purposeswithout going for a reboot since it can perform softwaretriggers as well based on user inputs.Also add the documentation for debugfs entries which explainsthe functionalities of each debugfs file that has been createdfor dcc.The following is the justification of using debugfs interfaceover the other alternatives like sysfs/ioctlsi) As can be seen from the debugfs attribute descriptions,some of the debugfs attribute files here contains multiplearguments which needs to be accepted from the user. This goesagainst the design style of sysfs.ii) The user input patterns have been made simple and convenientin this case with the use of debugfs interface as user doesn'tneed to shuffle between different files to execute one instructionas was the case on using other alternatives.Signed-off-by: Souradeep Chowdhury Reviewed-by: Alex Elder [bjorn: Fixed up a few indents and line wraps]Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/644b4f66a358492a8a6738454035c3b120092fe7.1672148732.git.quic_schowdhu@quicinc.com List of files: /linux-6.15/Documentation/ABI/testing/debugfs-driver-dcc