ASoC: wsa881x: mark read_only_wordlength flag

WSA881x works in PDM mode so the wordlength is fixed, which also makes
the only field "WordLength" in DPN_BlockCtrl1 register a read-only.
Writing to this register will throw up errors with Qualcomm Controller.
So use ro_blockctrl1_reg flag to mark this field as read-only so that
core will not write to this register.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200414110347.23829-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
index f2d6f2f..d39d479 100644 (file)
--- a/sound/soc/codecs/wsa881x.c
+++ b/sound/soc/codecs/wsa881x.c
@@ -394,6 +394,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
                .min_ch = 1,
                .max_ch = 1,
                .simple_ch_prep_sm = true,
+               .read_only_wordlength = true,
        }, {
                /* COMP */
                .num = 2,
@@ -401,6 +402,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
                .min_ch = 1,
                .max_ch = 1,
                .simple_ch_prep_sm = true,
+               .read_only_wordlength = true,
        }, {
                /* BOOST */
                .num = 3,
@@ -408,6 +410,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
                .min_ch = 1,
                .max_ch = 1,
                .simple_ch_prep_sm = true,
+               .read_only_wordlength = true,
        }, {
                /* VISENSE */
                .num = 4,
@@ -415,6 +418,7 @@ static struct sdw_dpn_prop wsa_sink_dpn_prop[WSA881X_MAX_SWR_PORTS] = {
                .min_ch = 1,
                .max_ch = 1,
                .simple_ch_prep_sm = true,
+               .read_only_wordlength = true,
        }
 };