linux-kernel - [PATCH v7 08/15] drm/bridge: analogix_dp: Support to get &analogix_dp_device.plat_data and &analogix_dp

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Message-Id: <20250224081325.96724-9-damon.ding@rock-chips.com>
Date: Mon, 24 Feb 2025 16:13:18 +0800
From: Damon Ding <damon.ding@...k-chips.com>
To: heiko@...ech.de
Cc: andy.yan@...k-chips.com,
	hjc@...k-chips.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	andrzej.hajda@...el.com,
	neil.armstrong@...aro.org,
	rfoss@...nel.org,
	Laurent.pinchart@...asonboard.com,
	jonas@...boo.se,
	jernej.skrabec@...il.com,
	dmitry.baryshkov@...aro.org,
	dianders@...omium.org,
	sebastian.reichel@...labora.com,
	cristian.ciocaltea@...labora.com,
	boris.brezillon@...labora.com,
	l.stach@...gutronix.de,
	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,
	Damon Ding <damon.ding@...k-chips.com>
Subject: [PATCH v7 08/15] 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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

---

Changes in v7:
- Use the forward-declare struct drm_dp_aux instead of including the
  relevant header file.
---
 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 2c94f77c1d4c..a57e06d303a1 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1767,6 +1767,20 @@ 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..e19b0bbc57d6 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -10,6 +10,7 @@
 #include <drm/drm_crtc.h>
 
 struct analogix_dp_device;
+struct drm_dp_aux;
 
 enum analogix_dp_devtype {
 	EXYNOS_DP,
@@ -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