linux-kernel - [PATCH v2 07/10] drm/rcar-du: Add support for r8a779h0

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Message-Id: <20241205-rcar-gh-dsi-v2-7-42471851df86@ideasonboard.com>
Date: Thu, 05 Dec 2024 15:45:02 +0200
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
 Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, LUU HOAI <hoai.luu.ub@...esas.com>, 
 Jagan Teki <jagan@...rulasolutions.com>, Sam Ravnborg <sam@...nborg.org>, 
 Biju Das <biju.das.jz@...renesas.com>
Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, 
 linux-clk@...r.kernel.org, 
 Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: [PATCH v2 07/10] drm/rcar-du: Add support for r8a779h0

From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>

Add support for r8a779h0. It is very similar to r8a779g0, but has only
one output.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c   | 18 ++++++++++++++++++
 drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c |  4 +++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c
index fb719d9aff10..7858e10839f2 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c
@@ -545,6 +545,23 @@ static const struct rcar_du_device_info rcar_du_r8a779g0_info = {
 	.dsi_clk_mask =  BIT(1) | BIT(0),
 };
 
+static const struct rcar_du_device_info rcar_du_r8a779h0_info = {
+	.gen = 4,
+	.features = RCAR_DU_FEATURE_CRTC_IRQ
+		  | RCAR_DU_FEATURE_VSP1_SOURCE
+		  | RCAR_DU_FEATURE_NO_BLENDING,
+	.channels_mask = BIT(0),
+	.routes = {
+		/* R8A779H0 has one MIPI DSI output. */
+		[RCAR_DU_OUTPUT_DSI0] = {
+			.possible_crtcs = BIT(0),
+			.port = 0,
+		},
+	},
+	.num_rpf = 5,
+	.dsi_clk_mask = BIT(0),
+};
+
 static const struct of_device_id rcar_du_of_table[] = {
 	{ .compatible = "renesas,du-r8a7742", .data = &rcar_du_r8a7790_info },
 	{ .compatible = "renesas,du-r8a7743", .data = &rzg1_du_r8a7743_info },
@@ -571,6 +588,7 @@ static const struct of_device_id rcar_du_of_table[] = {
 	{ .compatible = "renesas,du-r8a77995", .data = &rcar_du_r8a7799x_info },
 	{ .compatible = "renesas,du-r8a779a0", .data = &rcar_du_r8a779a0_info },
 	{ .compatible = "renesas,du-r8a779g0", .data = &rcar_du_r8a779g0_info },
+	{ .compatible = "renesas,du-r8a779h0", .data = &rcar_du_r8a779h0_info },
 	{ }
 };
 
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c
index 0fbf6abbde6e..b9ae6cc43702 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c
@@ -107,10 +107,12 @@ static void rcar_du_group_setup_didsr(struct rcar_du_group *rgrp)
 		 */
 		rcrtc = rcdu->crtcs;
 		num_crtcs = rcdu->num_crtcs;
-	} else if (rcdu->info->gen >= 3 && rgrp->num_crtcs > 1) {
+	} else if ((rcdu->info->gen == 3 && rgrp->num_crtcs > 1) ||
+		   rcdu->info->gen == 4) {
 		/*
 		 * On Gen3 dot clocks are setup through per-group registers,
 		 * only available when the group has two channels.
+		 * On Gen4 the registers are there for single channel too.
 		 */
 		rcrtc = &rcdu->crtcs[rgrp->index * 2];
 		num_crtcs = rgrp->num_crtcs;

-- 
2.43.0