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disp: msm: ensure vbif debugbus not in use is disabled

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Ensure register write is complete with a write barrier
while disabling other vbif debugbus when not in use
and also while clearing the test point.

Change-Id: I40da69027f86e13f4a71d87ad3975f94a5a1cb31
Signed-off-by: Prabhanjan Kandula <quic_pkandula@quicinc.com>
This commit is contained in:
Prabhanjan Kandula
2021-12-06 23:53:53 -08:00
parent 9ab14dedc2
commit add2cb79c9
1 changed files with 3 additions and 0 deletions
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3
msm/sde_dbg.c
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@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only // SPDX-License-Identifier: GPL-2.0-only
/* /*
* Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2009-2021, The Linux Foundation. All rights reserved. * Copyright (c) 2009-2021, The Linux Foundation. All rights reserved.
*/ */
@@ -866,6 +867,7 @@ static void _sde_dbg_vbif_disable_block(void __iomem *mem_base, u32 wr_addr)
MMSS_VBIF_TEST_BUS2_CTRL0 : MMSS_VBIF_TEST_BUS1_CTRL0; MMSS_VBIF_TEST_BUS2_CTRL0 : MMSS_VBIF_TEST_BUS1_CTRL0;
writel_relaxed(0, mem_base + disable_addr); writel_relaxed(0, mem_base + disable_addr);
writel_relaxed(BIT(0), mem_base + MMSS_VBIF_TEST_BUS_OUT_CTRL); writel_relaxed(BIT(0), mem_base + MMSS_VBIF_TEST_BUS_OUT_CTRL);
wmb(); /* update test bus */
} }
static u32 _sde_dbg_vbif_read_test_point(void __iomem *mem_base, u32 wr_addr, u32 rd_addr, static u32 _sde_dbg_vbif_read_test_point(void __iomem *mem_base, u32 wr_addr, u32 rd_addr,
@@ -881,6 +883,7 @@ static void _sde_dbg_vbif_clear_test_point(void __iomem *mem_base, u32 wr_addr)
{ {
writel_relaxed(0, mem_base + wr_addr); writel_relaxed(0, mem_base + wr_addr);
writel_relaxed(0, mem_base + wr_addr + 0x4); writel_relaxed(0, mem_base + wr_addr + 0x4);
wmb(); /* update test point clear */
} }
static u32 _sde_dbg_sde_read_test_point(void __iomem *mem_base, u32 wr_addr, u32 rd_addr, static u32 _sde_dbg_sde_read_test_point(void __iomem *mem_base, u32 wr_addr, u32 rd_addr,