docs: misc-devices/c2port.txt: convert to ReST format

- Use copyright symbol;
- use title markups;
- adjust indentation;
- mark literal blocks as such.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
[jc: reverted |copy| change]
Link: https://lore.kernel.org/r/b3b2f3f58a9a33f9e8526d4fa36bee305ea4da38.1592203650.git.mchehab+huawei@kernel.orgSigned-off-by: NJonathan Corbet <corbet@lwn.net>

Documentation/misc-devices/c2port.txt → Documentation/misc-devices/c2port.rst

-			C2 port support
-			---------------
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: <isonum.txt>
+
+===============
+C2 port support
+===============
 
 (C) Copyright 2007 Rodolfo Giometti <giometti@enneenne.com>
 
@@ -32,10 +36,10 @@ The C2 Interface main references are at (https://www.silabs.com)
 Silicon Laboratories site], see:
 
 - AN127: FLASH Programming via the C2 Interface at
-https://www.silabs.com/Support Documents/TechnicalDocs/an127.pdf 
+  https://www.silabs.com/Support Documents/TechnicalDocs/an127.pdf
 
 - C2 Specification at
-https://www.silabs.com/pages/DownloadDoc.aspx?FILEURL=Support%20Documents/TechnicalDocs/an127.pdf&src=SearchResults
+  https://www.silabs.com/pages/DownloadDoc.aspx?FILEURL=Support%20Documents/TechnicalDocs/an127.pdf&src=SearchResults
 
 however it implements a two wire serial communication protocol (bit
 banging) designed to enable in-system programming, debugging, and
@@ -47,44 +51,44 @@ Using the driver
 ----------------
 
 Once the driver is loaded you can use sysfs support to get C2port's
-info or read/write in-system flash.
+info or read/write in-system flash::
 
-# ls /sys/class/c2port/c2port0/
-access            flash_block_size  flash_erase       rev_id
-dev_id            flash_blocks_num  flash_size        subsystem/
-flash_access      flash_data        reset             uevent
+  # ls /sys/class/c2port/c2port0/
+  access            flash_block_size  flash_erase       rev_id
+  dev_id            flash_blocks_num  flash_size        subsystem/
+  flash_access      flash_data        reset             uevent
 
 Initially the C2port access is disabled since you hardware may have
 such lines multiplexed with other devices so, to get access to the
-C2port, you need the command:
+C2port, you need the command::
 
-# echo 1 > /sys/class/c2port/c2port0/access
+  # echo 1 > /sys/class/c2port/c2port0/access
 
 after that you should read the device ID and revision ID of the
-connected micro controller:
+connected micro controller::
 
-# cat /sys/class/c2port/c2port0/dev_id
-8
-# cat /sys/class/c2port/c2port0/rev_id
-1
+  # cat /sys/class/c2port/c2port0/dev_id
+  8
+  # cat /sys/class/c2port/c2port0/rev_id
+  1
 
 However, for security reasons, the in-system flash access in not
-enabled yet, to do so you need the command:
+enabled yet, to do so you need the command::
 
-# echo 1 > /sys/class/c2port/c2port0/flash_access
+  # echo 1 > /sys/class/c2port/c2port0/flash_access
 
-After that you can read the whole flash:
+After that you can read the whole flash::
 
-# cat /sys/class/c2port/c2port0/flash_data > image
+  # cat /sys/class/c2port/c2port0/flash_data > image
 
-erase it:
+erase it::
 
-# echo 1 > /sys/class/c2port/c2port0/flash_erase
+  # echo 1 > /sys/class/c2port/c2port0/flash_erase
 
-and write it:
+and write it::
 
-# cat image > /sys/class/c2port/c2port0/flash_data
+  # cat image > /sys/class/c2port/c2port0/flash_data
 
-after writing you have to reset the device to execute the new code:
+after writing you have to reset the device to execute the new code::
 
-# echo 1 > /sys/class/c2port/c2port0/reset
+  # echo 1 > /sys/class/c2port/c2port0/reset

Documentation/misc-devices/index.rst

@@ -16,6 +16,7 @@ fit into other categories.
 
    ad525x_dpot
    eeprom
+   c2port
    ibmvmc
    ics932s401
    isl29003