linux-kernel - [PATCH v0 8/9] media: qcom: camss: Fix set CSI2_RX_CFG1_VC

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Date:   Mon, 14 Aug 2023 15:10:06 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     rfoss@...nel.org, todor.too@...il.com, bryan.odonoghue@...aro.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        mchehab@...nel.org, hverkuil-cisco@...all.nl,
        sakari.ailus@...ux.intel.com, andrey.konovalov@...aro.org
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: [PATCH v0 8/9] media: qcom: camss: Fix set CSI2_RX_CFG1_VC_MODE when VC is greater than 3

VC_MODE = 0 implies a two bit VC address.
VC_MODE = 1 is required for VCs with a larger address than two bits.

Fixes: eebe6d00e9bf ("media: camss: Add support for CSID hardware version Titan 170")
Cc: stable@...r.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 drivers/media/platform/qcom/camss/camss-csid-gen2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csid-gen2.c b/drivers/media/platform/qcom/camss/camss-csid-gen2.c
index 45c7986d4a8d0..9ac253111e572 100644
--- a/drivers/media/platform/qcom/camss/camss-csid-gen2.c
+++ b/drivers/media/platform/qcom/camss/camss-csid-gen2.c
@@ -352,7 +352,7 @@ static void __csid_configure_stream(struct csid_device *csid, u8 enable, u8 vc)
 		phy_sel = csid->phy.csiphy_id;
 
 	if (enable) {
-		u8 dt_id = vc;
+		u8 dt_id = vc * 4;
 
 		if (tg->enabled) {
 			/* Config Test Generator */
@@ -449,6 +449,8 @@ static void __csid_configure_stream(struct csid_device *csid, u8 enable, u8 vc)
 	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG0);
 
 	val = 1 << CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN;
+	if (vc > 3)
+		val |= 1 << CSI2_RX_CFG1_VC_MODE;
 	val |= 1 << CSI2_RX_CFG1_MISR_EN;
 	writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG1);
 
-- 
2.41.0