From: Dharageswari R <dharageswari.r@xxxxxxxxx> 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@xxxxxxxxx> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@xxxxxxxxxxxxxxx> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Signed-off-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx> --- sound/soc/soc-topology.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index cee998671318..28faaf58326e 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -603,10 +603,11 @@ static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr, 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 */ -- 2.27.0
