linux-kernel - [PATCH v3 6/7] drm/bridge: dw-hdmi-qp: replace mode_valid with tmds_char

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Message-Id: <20241109-hdmi-mode-valid-v3-6-5348c2368076@linaro.org>
Date: Sat, 09 Nov 2024 14:35:10 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>, 
 Maíra Canal <mcanal@...lia.com>, 
 Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.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>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: [PATCH v3 6/7] drm/bridge: dw-hdmi-qp: replace mode_valid with
 tmds_char_rate

Replace .mode_valid() callback with .hdmi_tmds_char_rate_valid(). It is
more generic and is used in other mode validation paths. The rate
validation for .mode_valid() will be performed by the
drm_bridge_connector code.

Reviewed-by: Chen-Yu Tsai <wens@...e.org>
Reviewed-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
index 181c5164b23192f0b557624d73c6223032b90ec6..c686671e4850a1af75b82995185ffc3cbb22a447 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -442,16 +442,14 @@ dw_hdmi_qp_bridge_edid_read(struct drm_bridge *bridge,
 }
 
 static enum drm_mode_status
-dw_hdmi_qp_bridge_mode_valid(struct drm_bridge *bridge,
-			     const struct drm_display_info *info,
-			     const struct drm_display_mode *mode)
+dw_hdmi_qp_bridge_tmds_char_rate_valid(const struct drm_bridge *bridge,
+				       const struct drm_display_mode *mode,
+				       unsigned long long rate)
 {
 	struct dw_hdmi_qp *hdmi = bridge->driver_private;
-	unsigned long long rate;
 
-	rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
 	if (rate > HDMI14_MAX_TMDSCLK) {
-		dev_dbg(hdmi->dev, "Unsupported mode clock: %d\n", mode->clock);
+		dev_dbg(hdmi->dev, "Unsupported TMDS char rate: %lld\n", rate);
 		return MODE_CLOCK_HIGH;
 	}
 
@@ -510,7 +508,7 @@ static const struct drm_bridge_funcs dw_hdmi_qp_bridge_funcs = {
 	.atomic_disable = dw_hdmi_qp_bridge_atomic_disable,
 	.detect = dw_hdmi_qp_bridge_detect,
 	.edid_read = dw_hdmi_qp_bridge_edid_read,
-	.mode_valid = dw_hdmi_qp_bridge_mode_valid,
+	.hdmi_tmds_char_rate_valid = dw_hdmi_qp_bridge_tmds_char_rate_valid,
 	.hdmi_clear_infoframe = dw_hdmi_qp_bridge_clear_infoframe,
 	.hdmi_write_infoframe = dw_hdmi_qp_bridge_write_infoframe,
 };

-- 
2.39.5