From 4bcf26fe5821247fed58c995622b84fb72ab5555 Mon Sep 17 00:00:00 2001
From: YueHaibing <yuehaibing@huawei.com>
Date: Thu, 17 Mar 2022 17:47:24 +0800
Subject: drm/bridge: it6505: Fix build error
Git-commit: 3dd4834a6efe4eb3c086526e1870bb768776d86a
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

If DRM_ITE_IT6505 is y but DRM_DP_HELPER is m, building failed:

drivers/gpu/drm/bridge/ite-it6505.o: In function `it6505_i2c_remove':
ite-it6505.c:(.text+0x35c): undefined reference to `drm_dp_aux_unregister'
drivers/gpu/drm/bridge/ite-it6505.o: In function `it6505_dpcd_read':
ite-it6505.c:(.text+0x420): undefined reference to `drm_dp_dpcd_read'
drivers/gpu/drm/bridge/ite-it6505.o: In function `it6505_get_dpcd':
ite-it6505.c:(.text+0x4a4): undefined reference to `drm_dp_dpcd_read'
drivers/gpu/drm/bridge/ite-it6505.o: In function `it6505_dpcd_write':
ite-it6505.c:(.text+0x52c): undefined reference to `drm_dp_dpcd_write'

Select DRM_DP_HELPER for DRM_ITE_IT6505 to fix this.

Fixes: b5c84a9edcd4 ("drm/bridge: add it6505 driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220317094724.25972-1-yuehaibing@huawei.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/bridge/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 2145b08f9534..becd9867f3a0 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -77,6 +77,7 @@ config DRM_DISPLAY_CONNECTOR
 config DRM_ITE_IT6505
         tristate "ITE IT6505 DisplayPort bridge"
         depends on OF
+	select DRM_DP_HELPER
         select DRM_KMS_HELPER
         select DRM_DP_HELPER
         select EXTCON
-- 
2.38.1