linux-kernel - [PATCH RFC v2 29/37] drm/rockchip: inno_hdmi: Create mask retrieval functions

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Date:   Wed, 20 Sep 2023 16:35:44 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, Emma Anholt <emma@...olt.net>,
        Jonathan Corbet <corbet@....net>,
        Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>
Cc:     Hans Verkuil <hverkuil@...all.nl>, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        Maxime Ripard <mripard@...nel.org>
Subject: [PATCH RFC v2 29/37] drm/rockchip: inno_hdmi: Create mask
 retrieval functions

The register mask and bits to enable or disable a given infoframe
depends on its type.

This is currently passed as an argument to the function that writes an
infoframe, but let's create a helper function to retrieve them based on
the type to make further reworks easier.

Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 drivers/gpu/drm/rockchip/inno_hdmi.c | 75 ++++++++++++++++++++++++++++++------
 1 file changed, 63 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index e3a421d98dd4..bc7fb1278cb2 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -156,10 +156,62 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi)
 	inno_hdmi_set_pwr_mode(hdmi, NORMAL);
 }
 
-static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi,
-				    u32 frame_index,
-				    u32 mask, u32 disable)
+static u32 inno_hdmi_get_frame_mask(struct inno_hdmi *hdmi,
+				    u32 frame_index)
 {
+	struct drm_device *drm = hdmi->connector.dev;
+
+	switch (frame_index) {
+	case INFOFRAME_VSI:
+		return m_PACKET_VSI_EN;
+	case INFOFRAME_AVI:
+		return 0;
+	default:
+		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
+	}
+
+	return 0;
+}
+
+static u32 inno_hdmi_get_frame_disable(struct inno_hdmi *hdmi,
+				       u32 frame_index)
+{
+	struct drm_device *drm = hdmi->connector.dev;
+
+	switch (frame_index) {
+	case INFOFRAME_VSI:
+		return v_PACKET_VSI_EN(0);
+	case INFOFRAME_AVI:
+		return 0;
+	default:
+		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
+	}
+
+	return 0;
+}
+
+static u32 inno_hdmi_get_frame_enable(struct inno_hdmi *hdmi,
+				      u32 frame_index)
+{
+	struct drm_device *drm = hdmi->connector.dev;
+
+	switch (frame_index) {
+	case INFOFRAME_VSI:
+		return v_PACKET_VSI_EN(1);
+	case INFOFRAME_AVI:
+		return 0;
+	default:
+		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
+	}
+
+	return 0;
+}
+
+static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, u32 frame_index)
+{
+	u32 disable = inno_hdmi_get_frame_disable(hdmi, frame_index);
+	u32 mask = inno_hdmi_get_frame_mask(hdmi, frame_index);
+
 	if (mask)
 		hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable);
 
@@ -167,13 +219,14 @@ static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi,
 }
 
 static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi,
-				  union hdmi_infoframe *frame, u32 frame_index,
-				  u32 mask, u32 disable, u32 enable)
+				  union hdmi_infoframe *frame, u32 frame_index)
 {
+	u32 enable = inno_hdmi_get_frame_enable(hdmi, frame_index);
+	u32 mask = inno_hdmi_get_frame_mask(hdmi, frame_index);
 	u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
 	ssize_t rc, i;
 
-	inno_hdmi_disable_frame(hdmi, frame_index, mask, disable);
+	inno_hdmi_disable_frame(hdmi, frame_index);
 
 	rc = hdmi_infoframe_pack(frame, packed_frame,
 				 sizeof(packed_frame));
@@ -200,13 +253,11 @@ static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi,
 							 &hdmi->connector,
 							 mode);
 	if (rc) {
-		inno_hdmi_disable_frame(hdmi, INFOFRAME_VSI,
-					m_PACKET_VSI_EN, v_PACKET_VSI_EN(0));
+		inno_hdmi_disable_frame(hdmi, INFOFRAME_VSI);
 		return rc;
 	}
 
-	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_VSI,
-		m_PACKET_VSI_EN, v_PACKET_VSI_EN(0), v_PACKET_VSI_EN(1));
+	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_VSI);
 }
 
 static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
@@ -219,13 +270,13 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
 						      &hdmi->connector,
 						      mode);
 	if (rc) {
-		inno_hdmi_disable_frame(hdmi, INFOFRAME_AVI, 0, 0);
+		inno_hdmi_disable_frame(hdmi, INFOFRAME_AVI);
 		return rc;
 	}
 
 	frame.avi.colorspace = HDMI_COLORSPACE_RGB;
 
-	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_AVI, 0, 0, 0);
+	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_AVI);
 }
 
 static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)

-- 
2.41.0