linux-kernel - [PATCH 5.19 0437/1157] drm/msm/dpu: fix maxlinewidth for writeback block

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Message-Id: <20220815180457.118455673@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 19:56:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 0437/1157] drm/msm/dpu: fix maxlinewidth for writeback block

From: Abhinav Kumar <quic_abhinavk@...cinc.com>

[ Upstream commit a370cc392e075de5a4b7f3fb27cdeec0d70b5893 ]

Writeback block for sm8250 was using the default maxlinewidth
of 2048. But this is not right as it supports upto 4096.

This should have no effect on most resolutions as we are
still limiting upto maxlinewidth of SSPP for adding the modes.

Fix the maxlinewidth for writeback block on sm8250.

changes in v3:
	- correct the Fixes tag

Fixes: 53324b99bd7b ("drm/msm/dpu: add writeback blocks to the sm8250 DPU catalog")
Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Patchwork: https://patchwork.freedesktop.org/patch/489887/
Link: https://lore.kernel.org/r/1655406084-17407-2-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index 400ebceb56bb..dd7537e32f88 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -1285,7 +1285,7 @@ static const struct dpu_intf_cfg qcm2290_intf[] = {
  * Writeback blocks config
  *************************************************************/
 #define WB_BLK(_name, _id, _base, _features, _clk_ctrl, \
-		__xin_id, vbif_id, _reg, _wb_done_bit) \
+		__xin_id, vbif_id, _reg, _max_linewidth, _wb_done_bit) \
 	{ \
 	.name = _name, .id = _id, \
 	.base = _base, .len = 0x2c8, \
@@ -1295,13 +1295,13 @@ static const struct dpu_intf_cfg qcm2290_intf[] = {
 	.clk_ctrl = _clk_ctrl, \
 	.xin_id = __xin_id, \
 	.vbif_idx = vbif_id, \
-	.maxlinewidth = DEFAULT_DPU_LINE_WIDTH, \
+	.maxlinewidth = _max_linewidth, \
 	.intr_wb_done = DPU_IRQ_IDX(_reg, _wb_done_bit) \
 	}
 
 static const struct dpu_wb_cfg sm8250_wb[] = {
 	WB_BLK("wb_2", WB_2, 0x65000, WB_SM8250_MASK, DPU_CLK_CTRL_WB2, 6,
-			VBIF_RT, MDP_SSPP_TOP0_INTR, 4),
+			VBIF_RT, MDP_SSPP_TOP0_INTR, 4096, 4),
 };
 
 /*************************************************************
-- 
2.35.1