linux-kernel - [PATCH v5 10/20] drm/bridge: analogix_dp: support to get &analogix_dp_device.plat_data and &analogix_dp

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Message-Id: <20250109032725.1102465-11-damon.ding@rock-chips.com>
Date: Thu,  9 Jan 2025 11:27:15 +0800
From: Damon Ding <damon.ding@...k-chips.com>
To: heiko@...ech.de
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	rfoss@...nel.org,
	vkoul@...nel.org,
	sebastian.reichel@...labora.com,
	cristian.ciocaltea@...labora.com,
	l.stach@...gutronix.de,
	dmitry.baryshkov@...aro.org,
	andy.yan@...k-chips.com,
	hjc@...k-chips.com,
	algea.cao@...k-chips.com,
	kever.yang@...k-chips.com,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	Damon Ding <damon.ding@...k-chips.com>
Subject: [PATCH v5 10/20] drm/bridge: analogix_dp: support to get &analogix_dp_device.plat_data and &analogix_dp_device.aux

Add two new functions: one to find &analogix_dp_device.plat_data via
&drm_dp_aux, and the other to get &analogix_dp_device.aux. Both of them
serve for the function of getting panel from DP AUX bus, which is why
they are included in a single commit.

Signed-off-by: Damon Ding <damon.ding@...k-chips.com>
---
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 14 ++++++++++++++
 include/drm/bridge/analogix_dp.h                   |  4 ++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index b05f5b9f5258..8251adfce2f9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1794,6 +1794,20 @@ int analogix_dp_stop_crc(struct drm_connector *connector)
 }
 EXPORT_SYMBOL_GPL(analogix_dp_stop_crc);
 
+struct analogix_dp_plat_data *analogix_dp_aux_to_plat_data(struct drm_dp_aux *aux)
+{
+	struct analogix_dp_device *dp = to_dp(aux);
+
+	return dp->plat_data;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_aux_to_plat_data);
+
+struct drm_dp_aux *analogix_dp_get_aux(struct analogix_dp_device *dp)
+{
+	return &dp->aux;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_get_aux);
+
 MODULE_AUTHOR("Jingoo Han <jg1.han@...sung.com>");
 MODULE_DESCRIPTION("Analogix DP Core Driver");
 MODULE_LICENSE("GPL v2");
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index 6002c5666031..1b119b547988 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -7,6 +7,7 @@
 #ifndef _ANALOGIX_DP_H_
 #define _ANALOGIX_DP_H_
 
+#include <drm/display/drm_dp_aux_bus.h>
 #include <drm/drm_crtc.h>
 
 struct analogix_dp_device;
@@ -48,4 +49,7 @@ void analogix_dp_unbind(struct analogix_dp_device *dp);
 int analogix_dp_start_crc(struct drm_connector *connector);
 int analogix_dp_stop_crc(struct drm_connector *connector);
 
+struct analogix_dp_plat_data *analogix_dp_aux_to_plat_data(struct drm_dp_aux *aux);
+struct drm_dp_aux *analogix_dp_get_aux(struct analogix_dp_device *dp);
+
 #endif /* _ANALOGIX_DP_H_ */
-- 
2.34.1