From 3915f8bddefda1c914d5c3149d329819a988761f Mon Sep 17 00:00:00 2001
From: Randy Dunlap <rdunlap@infradead.org>
Date: Wed, 6 Jul 2022 11:42:24 -0700
Subject: [PATCH] drm: xlnx: add <linux/io.h> for readl/writel
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Add a header file to prevent build errors:

../drivers/gpu/drm/xlnx/zynqmp_dp.c: In function ‘zynqmp_dp_write’:
../drivers/gpu/drm/xlnx/zynqmp_dp.c:335:9: error: implicit declaration of function ‘writel’ [-Werror=implicit-function-declaration]
  335 |         writel(val, dp->iomem + offset);
../drivers/gpu/drm/xlnx/zynqmp_dp.c: In function ‘zynqmp_dp_read’:
../drivers/gpu/drm/xlnx/zynqmp_dp.c:340:16: error: implicit declaration of function ‘readl’ [-Werror=implicit-function-declaration]
  340 |         return readl(dp->iomem + offset);

Fixes: a204f9743b68 ("drm: Remove linux/i2c.h from drm_crtc.h")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220706184224.29116-1-rdunlap@infradead.org
---
 drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 155971c..d14612b 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -25,6 +25,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-- 
2.7.4