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From: Alex Bee <knaerzche@gmail.com>
To: Sandy Huang <hjc@rock-chips.com>,
	=?UTF-8?q?Heiko=20St=C3=BCbner?= <heiko@sntech.de>,
	Andy Yan <andyshrk@163.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>,
	Daniel Vetter <daniel@ffwll.ch>,
	devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Alex Bee <knaerzche@gmail.com>
Subject: [PATCH v2 13/27] drm/rockchip: inno_hdmi: Move infoframe disable to separate function
Date: Sat, 16 Dec 2023 17:26:24 +0100
Message-ID: <20231216162639.125215-14-knaerzche@gmail.com>
In-Reply-To: <20231216162639.125215-1-knaerzche@gmail.com>
References: <20231216162639.125215-1-knaerzche@gmail.com>
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From: Maxime Ripard <mripard@kernel.org>

The code to upload infoframes to the controller uses a weird construct
which, based on the previous function call return code, will either
disable or enable that infoframe.

In order to get rid of that argument, let's split the function to
disable the infoframe into a separate function and make it obvious what
we are doing in the error path.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
Tested-by: Alex Bee <knaerzche@gmail.com>
---
changes in v2:
 - imported patch

 drivers/gpu/drm/rockchip/inno_hdmi.c | 46 ++++++++++++++++++----------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 1dd757845547..6354949bfd8e 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -207,34 +207,44 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi)
 	inno_hdmi_set_pwr_mode(hdmi, NORMAL);
 }
 
-static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, int setup_rc,
-				  union hdmi_infoframe *frame, u32 frame_index)
+static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, u32 frame_index)
 {
 	struct drm_connector *connector = &hdmi->connector;
 
 	if (frame_index != INFOFRAME_AVI) {
 		drm_err(connector->dev,
 			"Unsupported infoframe type: %u\n", frame_index);
-		return 0;
+		return;
 	}
 
 	hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index);
+}
 
-	if (setup_rc >= 0) {
-		u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
-		ssize_t rc, i;
-
-		rc = hdmi_infoframe_pack(frame, packed_frame,
-					 sizeof(packed_frame));
-		if (rc < 0)
-			return rc;
+static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi,
+				  union hdmi_infoframe *frame, u32 frame_index)
+{
+	struct drm_connector *connector = &hdmi->connector;
+	u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
+	ssize_t rc, i;
 
-		for (i = 0; i < rc; i++)
-			hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
-				    packed_frame[i]);
+	if (frame_index != INFOFRAME_AVI) {
+		drm_err(connector->dev,
+			"Unsupported infoframe type: %u\n", frame_index);
+		return 0;
 	}
 
-	return setup_rc;
+	inno_hdmi_disable_frame(hdmi, frame_index);
+
+	rc = hdmi_infoframe_pack(frame, packed_frame,
+				 sizeof(packed_frame));
+	if (rc < 0)
+		return rc;
+
+	for (i = 0; i < rc; i++)
+		hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
+			    packed_frame[i]);
+
+	return 0;
 }
 
 static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
@@ -246,6 +256,10 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
 	rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
 						      &hdmi->connector,
 						      mode);
+	if (rc) {
+		inno_hdmi_disable_frame(hdmi, INFOFRAME_AVI);
+		return rc;
+	}
 
 	if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
 		frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
@@ -254,7 +268,7 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
 	else
 		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
 
-	return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI);
+	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_AVI);
 }
 
 static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
-- 
2.43.0