ASoC: topology: Allow TLV control to be either read or write

There is no reason to force readwrite access on TLV controls. It can be
either read, write or both. This is further evidenced in code where it
performs following checks:
                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;

Fixes: 1a3232d2f61d ("ASoC: topology: Add support for TLV bytes controls")
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220112170030.569712-3-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index a97c02c4ef6b5fe1515e018e747c6b3ecc22c194..a9a9c46d0316a1e89d8377aa22427f6879503bfc 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -512,7 +512,8 @@ static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr,
 
        if (le32_to_cpu(hdr->ops.info) == SND_SOC_TPLG_CTL_BYTES
                && k->iface & SNDRV_CTL_ELEM_IFACE_MIXER
-               && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE
+               && (k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ
+                   || k->access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
                && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
                struct soc_bytes_ext *sbe;
                struct snd_soc_tplg_bytes_control *be;