[PATCH 3/3] soundwire: add Slave sysfs support

[Greg KH]

On Tue, May 19, 2020 at 04:35:51AM +0800, Bard Liao wrote:
> From: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> 
> Expose MIPI DisCo Slave properties in sysfs.
> 
> For Slave properties and Data Port 0, the attributes are managed with
> simple devm_ support.
> 
> A Slave Device may have more than one Data Port (DPN), and each Data
> Port can be sink or source. The attributes are created dynamically
> using pre-canned macros, but still use devm_ with a name attribute
> group to avoid creating kobjects - as requested by GregKH. In the
> _show function, we use container_of() to retrieve port number and
> direction required to extract the information.
> 
> Audio modes are not supported for now. Depending on the discussions
> the SoundWire Device Class, we may add it later as is or follow the
> new specification.
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> Signed-off-by: Bard Liao <yung-chuan.liao at linux.intel.com>

Reviewed-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>