This patch adds support for write-only and read-only TLV byte kcontrols
by checking for appropriate get/put IO handlers.
Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200908092825.1813847-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
sbe->get = ext_ops[i].get;
}
- if (sbe->put && sbe->get)
- return 0;
- else
+ if ((k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) && !sbe->get)
return -EINVAL;
+ if ((k->access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) && !sbe->put)
+ return -EINVAL;
+ return 0;
}
/* try and map vendor specific kcontrol handlers first */