linux-kernel - [PATCH 4/6] HACK: drm/aspeed: INTR

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Date:   Tue, 28 Sep 2021 10:57:01 +0800
From:   tommy-huang <tommy_huang@...eedtech.com>
To:     <joel@....id.au>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <robh+dt@...nel.org>, <andrew@...id.au>,
        <linux-aspeed@...ts.ozlabs.org>, <dri-devel@...ts.freedesktop.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <BMC-SW@...eedtech.com>
Subject: [PATCH 4/6] HACK: drm/aspeed: INTR_STS hadndling

From: Joel Stanley <joel@....id.au>

The 2600 uses this register differently. THis is a TODO to come up with
a method of handling that.

Signed-off-by: Joel Stanley <joel@....id.au>
Signed-off-by: tommy-huang <tommy_huang@...eedtech.com>
---
 drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index ea9cb0a4f16c..33095477cc03 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -126,7 +126,8 @@ static irqreturn_t aspeed_gfx_irq_handler(int irq, void *data)
 
 	if (reg & CRT_CTRL_VERTICAL_INTR_STS) {
 		drm_crtc_handle_vblank(&priv->pipe.crtc);
-		writel(reg, priv->base + CRT_CTRL1);
+		/* TODO */
+		writel(CRT_CTRL_VERTICAL_INTR_STS, priv->base + CRT_STATUS);
 		return IRQ_HANDLED;
 	}
 
-- 
2.17.1