diff options
| author | Nick Crews <ncrews@chromium.org> | 2019-02-08 17:37:18 -0700 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-02-21 21:36:21 +0100 |
| commit | b787bb126cbcd73754bcbc055ae9f804ac576e4a (patch) | |
| tree | 3c8d4173614ddfddbbe4ea0d6904c974a7c5a704 /include/linux/platform_data/wilco-ec.h | |
| parent | 7b3d4f44abf0e7a1ba762c8a9c99a8b39ee0c8b1 (diff) | |
platform/chrome: wilco_ec: Add support for raw commands in debugfs
Add a debugfs attribute that allows sending raw commands to the EC.
This is useful for development and debug but should not be enabled
in a production environment.
To test:
Get the EC firmware build date
First send the request command
> echo 00 f0 38 00 03 00 > raw
Then read the result. "12/21/18" is in the middle of the response
> cat raw
00 31 32 2f 32 31 2f 31 38 00 00 0f 01 00 01 00 .12/21/18.......
Get the EC firmware build date
First send the request command
> echo 00 f0 38 00 03 00 > raw
Then read the result. "12/21/18" is in the middle of the response
> cat raw
00 31 32 2f 32 31 2f 31 38 00 00 0f 01 00 01 00 .12/21/18.......
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Signed-off-by: Nick Crews <ncrews@chromium.org>
[Fix off-by-one error in wilco_ec/debugfs.c]
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'include/linux/platform_data/wilco-ec.h')
| -rw-r--r-- | include/linux/platform_data/wilco-ec.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/platform_data/wilco-ec.h b/include/linux/platform_data/wilco-ec.h index 0feb4b520a54..5344975afa1a 100644 --- a/include/linux/platform_data/wilco-ec.h +++ b/include/linux/platform_data/wilco-ec.h @@ -34,6 +34,7 @@ * @data_buffer: Buffer used for EC communication. The same buffer * is used to hold the request and the response. * @data_size: Size of the data buffer used for EC communication. + * @debugfs_pdev: The child platform_device used by the debugfs sub-driver. */ struct wilco_ec_device { struct device *dev; @@ -43,6 +44,7 @@ struct wilco_ec_device { struct resource *io_packet; void *data_buffer; size_t data_size; + struct platform_device *debugfs_pdev; }; /** |