linux-kernel - [PATCH 10/20] drm/bridge: tc358775: simplify lvds

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Message-Id: <20240506-tc358775-fix-powerup-v1-10-545dcf00b8dd@kernel.org>
Date: Mon, 06 May 2024 15:34:39 +0200
From: Michael Walle <mwalle@...nel.org>
To: 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>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Sam Ravnborg <sam@...nborg.org>, Vinay Simha BN <simhavcs@...il.com>, 
 Tony Lindgren <tony@...mide.com>
Cc: Daniel Semkowicz <dse@...umatec.com>, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, Michael Walle <mwalle@...nel.org>
Subject: [PATCH 10/20] drm/bridge: tc358775: simplify lvds_link property

The LVDS link can either be a single link or a dual link. No need for a
u8. Replace it with a bool "lvds_dual_link".

Signed-off-by: Michael Walle <mwalle@...nel.org>
---
 drivers/gpu/drm/bridge/tc358775.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index a9d731e87970..be2175571b99 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -231,7 +231,7 @@ struct tc_data {
 	struct regulator	*vddio;
 	struct gpio_desc	*reset_gpio;
 	struct gpio_desc	*stby_gpio;
-	u8			lvds_link; /* single-link or dual-link */
+	bool			lvds_dual_link;
 	u8			bpc;
 
 	enum tc3587x5_type	type;
@@ -409,7 +409,7 @@ static void tc_bridge_enable(struct drm_bridge *bridge)
 	regmap_write(tc->regmap, VFUEN, VFUEN_EN);
 
 	val = LVCFG_LVEN_BIT;
-	if (tc->lvds_link == DUAL_LINK) {
+	if (tc->lvds_dual_link) {
 		val |= TC358775_LVCFG_LVDLINK(1);
 		val |= TC358775_LVCFG_PCLKDIV(DIVIDE_BY_6);
 	} else {
@@ -460,8 +460,8 @@ tc_mode_valid(struct drm_bridge *bridge,
 	 * Maximum pixel clock speed 135MHz for single-link
 	 * 270MHz for dual-link
 	 */
-	if ((mode->clock > 135000 && tc->lvds_link == SINGLE_LINK) ||
-	    (mode->clock > 270000 && tc->lvds_link == DUAL_LINK))
+	if ((mode->clock > 135000 && !tc->lvds_dual_link) ||
+	    (mode->clock > 270000 && tc->lvds_dual_link))
 		return MODE_CLOCK_HIGH;
 
 	switch (info->bus_formats[0]) {
@@ -516,7 +516,6 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
 
 	of_node_put(tc->host_node);
 
-	tc->lvds_link = SINGLE_LINK;
 	endpoint = of_graph_get_endpoint_by_regs(tc->dev->of_node,
 						 TC358775_LVDS_OUT1, -1);
 	if (endpoint) {
@@ -525,13 +524,14 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
 
 		if (remote) {
 			if (of_device_is_available(remote))
-				tc->lvds_link = DUAL_LINK;
+				tc->lvds_dual_link = true;
 			of_node_put(remote);
 		}
 	}
 
 	dev_dbg(tc->dev, "no.of dsi lanes: %d\n", tc->num_dsi_lanes);
-	dev_dbg(tc->dev, "operating in %d-link mode\n",	tc->lvds_link);
+	dev_dbg(tc->dev, "operating in %s-link mode\n",
+		tc->lvds_dual_link ? "dual" : "single");
 
 	return 0;
 }

-- 
2.39.2