From 819b9f6002391925b53817ed96638bd40bd1d34f Mon Sep 17 00:00:00 2001
From: Dharageswari R <dharageswari.r@intel.com>
Date: Tue, 8 Sep 2020 12:28:24 +0300
Subject: [PATCH] ASoC: topology: Add support for WO and RO TLV byte kcontrols
Git-commit: 819b9f6002391925b53817ed96638bd40bd1d34f
Patch-mainline: v5.10-rc1
References: git-fixes

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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 */
-- 
2.26.2