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bh=LClR2cqFUi4SSBqHoy3glnoRo4IOBUbQ/Lmg6Lq1GSw=; b=OLhpIzVJ/xQEkvq8Y4qqJMyGWRRs2eUI6C6y1oYJWUCvTdglTzTXWDMwrmvcYjwav1oez4 t6gWn3sa6oxHlQ+hXVAFrxkOvFTSe2e9rioOJ8NTEFI3f9bLHrgV6Ddg+cT3GxTipIuMKw w+5xwiFtYjEsO38uW7Jlqy2LejJYubvOnD9dEwWJ6Bs7vSJf3bbPbaLQu6d9vmc3EZgH6E vtkmMGTJU1duRrepRXtSXE8ZbARBOvJu8aGxMnepUBOO5DcHh3pvQV622zM9cXRccmt6h0 36th97sI3g4qr7zdGv0f9ix5wgdHenuhwD3ozEXZJFe+ETnTjqN2DKbQClrliw== From: Luca Ceresoli Date: Wed, 23 Jul 2025 11:54:15 +0200 Subject: [PATCH 8/9] drm/bridge: add drm_for_each_bridge_in_chain_from() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250723-drm-bridge-alloc-getput-for_each_bridge-v1-8-be8f4ae006e9@bootlin.com> References: <20250723-drm-bridge-alloc-getput-for_each_bridge-v1-0-be8f4ae006e9@bootlin.com> In-Reply-To: <20250723-drm-bridge-alloc-getput-for_each_bridge-v1-0-be8f4ae006e9@bootlin.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Miguel Ojeda , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Tomi Valkeinen Cc: Dmitry Baryshkov , Chaoyi Chen , Hui Pu , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Luca Ceresoli X-Mailer: b4 0.14.2 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgdejjeegjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpefnuhgtrgcuvegvrhgvshholhhiuceolhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepieeiuedvffetgfeuudelheeutefggfejieettdetteekueeuueeukeevvedvueevnecukfhppedvrgdtvdemieejtdemvddtvddtmegvrgdtudemsggvgedumeelhegvjeemfeegfeemledufegvnecuvehluhhsthgvrhfuihiivgepjeenucfrrghrrghmpehinhgvthepvdgrtddvmeeijedtmedvtddvtdemvggrtddumegsvgegudemleehvgejmeefgeefmeeludefvgdphhgvlhhopegludelvddrudeikedrudejkedrjeehngdpmhgrihhlfhhrohhmpehluhgtrgdrtggvrhgvshholhhisegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvhedprhgtphhtthhopehluhgtrgdrtggvrhgvshholhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepmhhrihhprghrugeskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepthiiihhmmhgvrhhmrghnnhesshhushgvrdguvgdprhgtphhtthhopehth hhomhgrshdrphgvthgriiiiohhnihessghoohhtlhhinhdrtghomhdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtohepnhhitghkrdguvghsrghulhhnihgvrhhsodhlkhhmlhesghhmrghilhdrtghomhdprhgtphhtthhopehojhgvuggrsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehrfhhoshhssehkvghrnhgvlhdrohhrgh X-GND-Sasl: luca.ceresoli@bootlin.com Add variant of drm_for_each_bridge_in_chain_scoped() that iterates on the encoder bridge from a given bridge until the end of the chain. Signed-off-by: Luca Ceresoli --- include/drm/drm_bridge.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 0a45ed862ca3293bd0b12dacf3ba2c5429800d00..b271e1204c002f8dba080448583d75612f22a366 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -1389,6 +1389,25 @@ drm_bridge_get_next_bridge_and_put(struct drm_bridge *bridge) bridge; \ bridge = drm_bridge_get_next_bridge_and_put(bridge)) +/** + * drm_for_each_bridge_in_chain_from - iterate over all bridges starting + * from the given bridge + * @first_bridge: the bridge to start from + * @bridge: a bridge pointer updated to point to the current bridge at each + * iteration + * + * Iterate over all bridges in the encoder chain starting from + * @first_bridge, included. + * + * Automatically gets/puts the bridge reference while iterating, and puts + * the reference even if returning or breaking in the middle of the loop. + */ +#define drm_for_each_bridge_in_chain_from(first_bridge, bridge) \ + for (struct drm_bridge *bridge __free(drm_bridge_put) = \ + drm_bridge_get(first_bridge); \ + bridge; \ + bridge = drm_bridge_get_next_bridge_and_put(bridge)) + enum drm_mode_status drm_bridge_chain_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, -- 2.50.1