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* [PATCH] soundwire: qcom: fix handling of qcom,ports-block-pack-mode
@ 2021-05-04 12:59 ` Srinivas Kandagatla
  0 siblings, 0 replies; 6+ messages in thread
From: Srinivas Kandagatla @ 2021-05-04 12:59 UTC (permalink / raw)
  To: vkoul
  Cc: yung-chuan.liao, pierre-louis.bossart, sanyog.r.kale, alsa-devel,
	linux-kernel, bjorn.andersson, amit.pundir, Srinivas Kandagatla

Support to "qcom,ports-block-pack-mode" was added at later stages
to support a variant of Qualcomm SoundWire controllers available
on Apps processor. However the older versions of the SoundWire
controller which are embedded in WCD Codecs do not need this property.

So returning on error for those cases will break boards like DragonBoard
DB845c and Lenovo Yoga C630.

This patch fixes error handling on this property considering older usecases.

Fixes: 5943e4fb14e3 ("soundwire: qcom: check of_property_read status")
Reported-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/soundwire/qcom.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 2827085a323b..0ef79d60e88e 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -1150,8 +1150,16 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
 
 	ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode",
 					bp_mode, nports);
-	if (ret)
-		return ret;
+	if (ret) {
+		u32 version;
+
+		ctrl->reg_read(ctrl, SWRM_COMP_HW_VERSION, &version);
+
+		if (version <= 0x01030000)
+			memset(bp_mode, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+		else
+			return ret;
+	}
 
 	memset(hstart, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
 	of_property_read_u8_array(np, "qcom,ports-hstart", hstart, nports);
-- 
2.21.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-05-11 11:19 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-05-04 12:59 [PATCH] soundwire: qcom: fix handling of qcom,ports-block-pack-mode Srinivas Kandagatla
2021-05-04 12:59 ` Srinivas Kandagatla
2021-05-04 13:28 ` Amit Pundir
2021-05-04 13:28   ` [PATCH] soundwire: qcom: fix handling of qcom, ports-block-pack-mode Amit Pundir
2021-05-11 11:18 ` [PATCH] soundwire: qcom: fix handling of qcom,ports-block-pack-mode Vinod Koul
2021-05-11 11:18   ` Vinod Koul

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