linux-kernel - [PATCH v2 60/91] drm/vc4: crtc: Add BCM2711 pixelvalves

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Message-Id: <99a3fa9330b3c5d2482078de035c27d5f5d60d95.1587742492.git-series.maxime@cerno.tech>
Date:   Fri, 24 Apr 2020 17:34:41 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-rpi-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Maxime Ripard <maxime@...no.tech>
Subject: [PATCH v2 60/91] drm/vc4: crtc: Add BCM2711 pixelvalves

The BCM2711 has 5 pixelvalves, so now that our driver is ready, let's add
support for them.

Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/gpu/drm/vc4/vc4_crtc.c | 81 ++++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/vc4/vc4_regs.h |  6 +++-
 2 files changed, 85 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 47e411cbf5dc..20c038519751 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -274,6 +274,13 @@ static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format)
 	case PV_CONTROL_FORMAT_24:
 	case PV_CONTROL_FORMAT_DSIV_24:
 	default:
+		/*
+		 * For some reason, the pixelvalve4 doesn't work with
+		 * the usual formula and will only work with 32.
+		 */
+		if (vc4_crtc->data->hvs_output == 5)
+			return 32;
+
 		return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
 	}
 }
@@ -282,9 +289,14 @@ static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc,
 					     u32 format)
 {
 	u32 level = vc4_get_fifo_full_level(vc4_crtc, format);
+	u32 ret = 0;
 
-	return VC4_SET_FIELD(level & 0x3f,
-			     PV_CONTROL_FIFO_LEVEL);
+	if (level > 0x3f)
+		ret |= VC4_SET_FIELD((level >> 6) & 0x3,
+				     PV5_CONTROL_FIFO_LEVEL_HIGH);
+
+	return ret | VC4_SET_FIELD(level & 0x3f,
+				   PV_CONTROL_FIFO_LEVEL);
 }
 
 /*
@@ -330,6 +342,9 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc)
 	CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR | PV_CONTROL_EN);
 	CRTC_WRITE(PV_CONTROL, 0);
 
+	CRTC_WRITE(PV_MUX_CFG,
+		   VC4_SET_FIELD(8, PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
+
 	CRTC_WRITE(PV_HORZA,
 		   VC4_SET_FIELD((mode->htotal - mode->hsync_end) * pixel_rep / ppc,
 				 PV_HORZA_HBP) |
@@ -1118,10 +1133,72 @@ static const struct vc4_crtc_data bcm2835_pv2_data = {
 	},
 };
 
+static const struct vc4_crtc_data bcm2711_pv0_data = {
+	.debugfs_name = "crtc0_regs",
+	.hvs_available_channels = BIT(0),
+	.hvs_output = 0,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_DSI0,
+		[1] = VC4_ENCODER_TYPE_DPI,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv1_data = {
+	.debugfs_name = "crtc1_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 3,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_DSI1,
+		[1] = VC4_ENCODER_TYPE_SMI,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv2_data = {
+	.debugfs_name = "crtc2_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 4,
+	.fifo_depth = 256,
+	.pixels_per_clock = 2,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_HDMI0,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv3_data = {
+	.debugfs_name = "crtc3_regs",
+	.hvs_available_channels = BIT(1),
+	.hvs_output = 1,
+	.fifo_depth = 64,
+	.pixels_per_clock = 1,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_VEC,
+	},
+};
+
+static const struct vc4_crtc_data bcm2711_pv4_data = {
+	.debugfs_name = "crtc4_regs",
+	.hvs_available_channels = BIT(0) | BIT(1) | BIT(2),
+	.hvs_output = 5,
+	.fifo_depth = 64,
+	.pixels_per_clock = 2,
+	.encoder_types = {
+		[0] = VC4_ENCODER_TYPE_HDMI1,
+	},
+};
+
 static const struct of_device_id vc4_crtc_dt_match[] = {
 	{ .compatible = "brcm,bcm2835-pixelvalve0", .data = &bcm2835_pv0_data },
 	{ .compatible = "brcm,bcm2835-pixelvalve1", .data = &bcm2835_pv1_data },
 	{ .compatible = "brcm,bcm2835-pixelvalve2", .data = &bcm2835_pv2_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve0", .data = &bcm2711_pv0_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve1", .data = &bcm2711_pv1_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve2", .data = &bcm2711_pv2_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve3", .data = &bcm2711_pv3_data },
+	{ .compatible = "brcm,bcm2711-pixelvalve4", .data = &bcm2711_pv4_data },
 	{}
 };
 
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index b96ebbb1354b..35279b118d41 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -130,6 +130,8 @@
 #define V3D_ERRSTAT  0x00f20
 
 #define PV_CONTROL				0x00
+# define PV5_CONTROL_FIFO_LEVEL_HIGH_MASK	VC4_MASK(26, 25)
+# define PV5_CONTROL_FIFO_LEVEL_HIGH_SHIFT	25
 # define PV_CONTROL_FORMAT_MASK			VC4_MASK(23, 21)
 # define PV_CONTROL_FORMAT_SHIFT		21
 # define PV_CONTROL_FORMAT_24			0
@@ -209,6 +211,10 @@
 
 #define PV_HACT_ACT				0x30
 
+#define PV_MUX_CFG				0x34
+# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_MASK	VC4_MASK(5, 2)
+# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_SHIFT	2
+
 #define SCALER_CHANNELS_COUNT			3
 
 #define SCALER_DISPCTRL                         0x00000000
-- 
git-series 0.9.1