linux-kernel - [PATCH 6/8] drm/arm/malidp: Enable/disable the scaling engine interrupts with memory writeback

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Message-Id: <1522083800-30100-7-git-send-email-ayan.halder@arm.com>
Date:   Mon, 26 Mar 2018 18:03:18 +0100
From:   Ayan Kumar Halder <ayan.halder@....com>
To:     ayan.halder@....com, liviu.dudau@....com, brian.starkey@....com,
        malidp@...s.arm.com, airlied@...ux.ie,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     nd@....com
Subject: [PATCH 6/8] drm/arm/malidp: Enable/disable the scaling engine interrupts with memory writeback

Scaling engine interrupts need to be enabled/disabled as and when memwrite
is enabled and disabled. The reason being scaling engine interrupts are
used only by the memory writeout layer.

This patch depends on:

"[Patch v5,1/3] drm: mali-dp: Add support for writeback on DP550/DP650"

Change-Id: Ic78aa5cd7b53998a1947067c4a15c19de239583b
Signed-off-by: Ayan Kumar Halder <ayan.halder@....com>
---
 drivers/gpu/drm/arm/malidp_hw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
index f5633bc..90d76e4 100644
--- a/drivers/gpu/drm/arm/malidp_hw.c
+++ b/drivers/gpu/drm/arm/malidp_hw.c
@@ -621,12 +621,14 @@ static int malidp550_enable_memwrite(struct malidp_hw_device *hwdev,
 	malidp_hw_setbits(hwdev, MALIDP550_SE_MEMWRITE_ONESHOT | MALIDP_SE_MEMWRITE_EN,
 			  MALIDP550_SE_CONTROL);
 
+	malidp_se_irq_hw_init(hwdev);
 	return 0;
 }
 
 static void malidp550_disable_memwrite(struct malidp_hw_device *hwdev)
 {
 	u32 base = malidp_get_block_base(hwdev, MALIDP_DE_BLOCK);
+	malidp_se_irq_fini(hwdev);
 	malidp_hw_clearbits(hwdev, MALIDP550_SE_MEMWRITE_ONESHOT | MALIDP_SE_MEMWRITE_EN,
 			    MALIDP550_SE_CONTROL);
 	malidp_hw_clearbits(hwdev, MALIDP_SCALE_ENGINE_EN, base + MALIDP_DE_DISPLAY_FUNC);
-- 
2.7.4