FAILED: patch "[PATCH] drm/amd/display: hpd rx irq not working with eDP interface" failed to apply to 6.3-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.3-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.3.y
git checkout FETCH_HEAD
git cherry-pick -x eeefe7c4820b6baa0462a8b723ea0a3b5846ccae
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2023051350-ruckus-chemist-caf3@gregkh' --subject-prefix 'PATCH 6.3.y' HEAD^..

Possible dependencies:

eeefe7c4820b ("drm/amd/display: hpd rx irq not working with eDP interface")
7ae1dbe6547c ("drm/amd/display: merge dc_link.h into dc.h and dc_types.h")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From eeefe7c4820b6baa0462a8b723ea0a3b5846ccae Mon Sep 17 00:00:00 2001
From: Robin Chen <robin.chen@amd.com>
Date: Fri, 17 Feb 2023 20:47:57 +0800
Subject: [PATCH] drm/amd/display: hpd rx irq not working with eDP interface

[Why]
This is the fix for the defect of commit ab144f0b4ad6
("drm/amd/display: Allow individual control of eDP hotplug support").

[How]
To revise the default eDP hotplug setting and use the enum to git rid
of the magic number for different options.

Fixes: ab144f0b4ad6 ("drm/amd/display: Allow individual control of eDP hotplug support")
Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Robin Chen <robin.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 4b47fa00610b..45ab48fe5d00 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -1080,4 +1080,11 @@ struct dc_dpia_bw_alloc {
 };
 
 #define MAX_SINKS_PER_LINK 4
+
+enum dc_hpd_enable_select {
+	HPD_EN_FOR_ALL_EDP = 0,
+	HPD_EN_FOR_PRIMARY_EDP_ONLY,
+	HPD_EN_FOR_SECONDARY_EDP_ONLY,
+};
+
 #endif /* DC_TYPES_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_factory.c b/drivers/gpu/drm/amd/display/dc/link/link_factory.c
index 995032a341b3..3951d48118c4 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_factory.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_factory.c
@@ -528,14 +528,18 @@ static bool construct_phy(struct dc_link *link,
 				link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
 
 			switch (link->dc->config.allow_edp_hotplug_detection) {
-			case 1: // only the 1st eDP handles hotplug
+			case HPD_EN_FOR_ALL_EDP:
+				link->irq_source_hpd_rx =
+						dal_irq_get_rx_source(link->hpd_gpio);
+				break;
+			case HPD_EN_FOR_PRIMARY_EDP_ONLY:
 				if (link->link_index == 0)
 					link->irq_source_hpd_rx =
 						dal_irq_get_rx_source(link->hpd_gpio);
 				else
 					link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
 				break;
-			case 2: // only the 2nd eDP handles hotplug
+			case HPD_EN_FOR_SECONDARY_EDP_ONLY:
 				if (link->link_index == 1)
 					link->irq_source_hpd_rx =
 						dal_irq_get_rx_source(link->hpd_gpio);
@@ -543,6 +547,7 @@ static bool construct_phy(struct dc_link *link,
 					link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
 				break;
 			default:
+				link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
 				break;
 			}
 		}