linux-kernel - [PATCH v5 3/4] drm/vc4: hdmi: Use drm_atomic_helper_reset

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Message-ID: <20250203161607.223731-4-herve.codina@bootlin.com>
Date: Mon,  3 Feb 2025 17:16:05 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Alexander Stein <alexander.stein@...tq-group.com>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Dave Stevenson <dave.stevenson@...pberrypi.com>,
	Maíra Canal <mcanal@...lia.com>,
	Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>,
	Marek Vasut <marex@...x.de>
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Louis Chauvet <louis.chauvet@...tlin.com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Herve Codina <herve.codina@...tlin.com>
Subject: [PATCH v5 3/4] drm/vc4: hdmi: Use drm_atomic_helper_reset_crtc()

The current code uses a the reset_pipe() local function to reset the
CRTC outputs.

drm_atomic_helper_reset_crtc() has been introduced recently and it
performs exact same operations.

In order to avoid code duplication, use the new helper instead of the
local function.

Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 30 +-----------------------------
 1 file changed, 1 insertion(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 47d9ada98430..e878eddc9c3f 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -270,34 +270,6 @@ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi)
 static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {}
 #endif
 
-static int reset_pipe(struct drm_crtc *crtc,
-			struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_atomic_state *state;
-	struct drm_crtc_state *crtc_state;
-	int ret;
-
-	state = drm_atomic_state_alloc(crtc->dev);
-	if (!state)
-		return -ENOMEM;
-
-	state->acquire_ctx = ctx;
-
-	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state)) {
-		ret = PTR_ERR(crtc_state);
-		goto out;
-	}
-
-	crtc_state->connectors_changed = true;
-
-	ret = drm_atomic_commit(state);
-out:
-	drm_atomic_state_put(state);
-
-	return ret;
-}
-
 static int vc4_hdmi_reset_link(struct drm_connector *connector,
 			       struct drm_modeset_acquire_ctx *ctx)
 {
@@ -376,7 +348,7 @@ static int vc4_hdmi_reset_link(struct drm_connector *connector,
 	 * would be perfectly happy if were to just reconfigure
 	 * the SCDC settings on the fly.
 	 */
-	return reset_pipe(crtc, ctx);
+	return drm_atomic_helper_reset_crtc(crtc, ctx);
 }
 
 static void vc4_hdmi_handle_hotplug(struct vc4_hdmi *vc4_hdmi,
-- 
2.47.1