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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: vkoul@kernel.org
Cc: yung-chuan.liao@linux.intel.com,
	pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	bjorn.andersson@linaro.org, amit.pundir@linaro.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH] soundwire: qcom: fix handling of qcom,ports-block-pack-mode
Date: Tue,  4 May 2021 13:59:09 +0100	[thread overview]
Message-ID: <20210504125909.16108-1-srinivas.kandagatla@linaro.org> (raw)

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


WARNING: multiple messages have this Message-ID
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: vkoul@kernel.org
Cc: amit.pundir@linaro.org, alsa-devel@alsa-project.org,
	linux-kernel@vger.kernel.org,
	pierre-louis.bossart@linux.intel.com, bjorn.andersson@linaro.org,
	sanyog.r.kale@intel.com, yung-chuan.liao@linux.intel.com
Subject: [PATCH] soundwire: qcom: fix handling of qcom,ports-block-pack-mode
Date: Tue,  4 May 2021 13:59:09 +0100	[thread overview]
Message-ID: <20210504125909.16108-1-srinivas.kandagatla@linaro.org> (raw)

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


             reply	other threads:[~2021-05-04 12:59 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-04 12:59 Srinivas Kandagatla [this message]
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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