linux-kernel - [PATCH RFC v3 22/37] drm/rockchip: inno

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Message-Id: <20231031-kms-hdmi-connector-state-v3-22-328b0fae43a7@kernel.org>
Date:   Tue, 31 Oct 2023 17:48:35 +0100
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 v3 22/37] drm/rockchip: inno_hdmi: Remove useless
 output format

Similarly to the input format, the driver has a lot of code to deal with
various output format, but the driver hardcodes it to RGB always.

Let's get rid of the dead code.

Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 drivers/gpu/drm/rockchip/inno_hdmi.c | 57 ++++--------------------------------
 1 file changed, 6 insertions(+), 51 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index e0696ab16da3..0c6c550e0ce7 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -28,7 +28,6 @@
 #include "inno_hdmi.h"
 
 struct hdmi_data_info {
-	unsigned int enc_out_format;
 	unsigned int colorimetry;
 };
 
@@ -296,26 +295,14 @@ 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 (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
-		frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
-	else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422)
-		frame.avi.colorspace = HDMI_COLORSPACE_YUV422;
-	else
-		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
+	frame.avi.colorspace = HDMI_COLORSPACE_RGB;
 
 	return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0);
 }
 
 static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
 {
-	struct hdmi_data_info *data = &hdmi->hdmi_data;
-	int c0_c2_change = 0;
-	int csc_enable = 0;
-	int csc_mode = 0;
-	int auto_csc = 0;
 	int value;
-	int i;
 
 	/* Input video mode is SDR RGB24bit, data enable signal from external */
 	hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL1, v_DE_EXTERNAL |
@@ -327,43 +314,13 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
 		v_VIDEO_INPUT_CSP(0);
 	hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
 
-	if (HDMI_COLORSPACE_RGB == data->enc_out_format) {
-		value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
-		hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
-
-		hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
-			  m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
-			  v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
-			  v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
-		return 0;
-	}
-
-	if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) {
-		if (data->enc_out_format == HDMI_COLORSPACE_YUV444) {
-			csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
-			auto_csc = AUTO_CSC_DISABLE;
-			c0_c2_change = C0_C2_CHANGE_DISABLE;
-			csc_enable = v_CSC_ENABLE;
-		}
-	} else {
-		if (data->enc_out_format == HDMI_COLORSPACE_YUV444) {
-			csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
-			auto_csc = AUTO_CSC_DISABLE;
-			c0_c2_change = C0_C2_CHANGE_DISABLE;
-			csc_enable = v_CSC_ENABLE;
-		}
-	}
-
-	for (i = 0; i < 24; i++)
-		hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i,
-			    coeff_csc[csc_mode][i]);
-
-	value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1);
+	value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
 	hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
-	hdmi_modb(hdmi, HDMI_VIDEO_CONTRL, m_VIDEO_AUTO_CSC |
-		  m_VIDEO_C0_C2_SWAP, v_VIDEO_AUTO_CSC(auto_csc) |
-		  v_VIDEO_C0_C2_SWAP(c0_c2_change));
 
+	hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
+		  m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
+		  v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
+		  v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
 	return 0;
 }
 
@@ -425,8 +382,6 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
 	struct drm_display_info *display = &hdmi->connector.display_info;
 	u8 vic = drm_match_cea_mode(mode);
 
-	hdmi->hdmi_data.enc_out_format = HDMI_COLORSPACE_RGB;
-
 	if ((vic == 6) || (vic == 7) ||
 	    (vic == 21) || (vic == 22) ||
 	    (vic == 2) || (vic == 3) ||

-- 
2.41.0