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Message-Id: <20241023-drm-vc4-2712-support-v1-12-1cc2d5594907@raspberrypi.com>
Date: Wed, 23 Oct 2024 17:50:09 +0100
From: Dave Stevenson <dave.stevenson@...pberrypi.com>
To: Maxime Ripard <mripard@...nel.org>,
Maíra Canal <mcanal@...lia.com>,
Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Javier Martinez Canillas <javierm@...hat.com>,
Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [PATCH 12/37] drm/vc4: crtc: Add support for BCM2712 PixelValves
From: Maxime Ripard <mripard@...nel.org>
The PixelValves found on the BCM2712 are similar to the ones found in
the previous generation.
Compared to BCM2711:
- the pixelvalves only drive one HDMI controller each
- HDMI1 PixelValve has a FIFO long enough to support 4k at 60Hz
- support has been added for odd horizontal timings whilst at 2pixels/clock
Signed-off-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
---
drivers/gpu/drm/vc4/vc4_crtc.c | 49 ++++++++++++++++++++++++++++++++++++++++--
drivers/gpu/drm/vc4/vc4_drv.h | 2 ++
drivers/gpu/drm/vc4/vc4_regs.h | 6 ++++++
3 files changed, 55 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 53bca104d0d5..bfa25efa5db2 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -240,6 +240,11 @@ static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format)
const struct vc4_crtc_data *crtc_data = vc4_crtc_to_vc4_crtc_data(vc4_crtc);
const struct vc4_pv_data *pv_data = vc4_crtc_to_vc4_pv_data(vc4_crtc);
struct vc4_dev *vc4 = to_vc4_dev(vc4_crtc->base.dev);
+
+ /*
+ * NOTE: Could we use register 0x68 (PV_HW_CFG1) to get the FIFO
+ * size?
+ */
u32 fifo_len_bytes = pv_data->fifo_depth;
/*
@@ -421,6 +426,7 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encode
*/
CRTC_WRITE(PV_V_CONTROL,
PV_VCONTROL_CONTINUOUS |
+ (vc4->gen >= VC4_GEN_6_C ? PV_VCONTROL_ODD_TIMING : 0) |
(is_dsi ? PV_VCONTROL_DSI : 0) |
PV_VCONTROL_INTERLACE |
(odd_field_first
@@ -432,6 +438,7 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encode
} else {
CRTC_WRITE(PV_V_CONTROL,
PV_VCONTROL_CONTINUOUS |
+ (vc4->gen >= VC4_GEN_6_C ? PV_VCONTROL_ODD_TIMING : 0) |
(is_dsi ? PV_VCONTROL_DSI : 0));
CRTC_WRITE(PV_VSYNCD_EVEN, 0);
}
@@ -446,11 +453,17 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encode
if (is_dsi)
CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
- if (vc4->gen == VC4_GEN_5)
+ if (vc4->gen >= VC4_GEN_5)
CRTC_WRITE(PV_MUX_CFG,
VC4_SET_FIELD(PV_MUX_CFG_RGB_PIXEL_MUX_MODE_NO_SWAP,
PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
+ if (vc4->gen >= VC4_GEN_6_C)
+ CRTC_WRITE(PV_PIPE_INIT_CTRL,
+ VC4_SET_FIELD(1, PV_PIPE_INIT_CTRL_PV_INIT_WIDTH) |
+ VC4_SET_FIELD(1, PV_PIPE_INIT_CTRL_PV_INIT_IDLE) |
+ PV_PIPE_INIT_CTRL_PV_INIT_EN);
+
CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR |
vc4_crtc_get_fifo_full_level_bits(vc4_crtc, format) |
VC4_SET_FIELD(format, PV_CONTROL_FORMAT) |
@@ -549,7 +562,11 @@ int vc4_crtc_disable_at_boot(struct drm_crtc *crtc)
if (!(of_device_is_compatible(vc4_crtc->pdev->dev.of_node,
"brcm,bcm2711-pixelvalve2") ||
of_device_is_compatible(vc4_crtc->pdev->dev.of_node,
- "brcm,bcm2711-pixelvalve4")))
+ "brcm,bcm2711-pixelvalve4") ||
+ of_device_is_compatible(vc4_crtc->pdev->dev.of_node,
+ "brcm,bcm2712-pixelvalve0") ||
+ of_device_is_compatible(vc4_crtc->pdev->dev.of_node,
+ "brcm,bcm2712-pixelvalve1")))
return 0;
if (!(CRTC_READ(PV_CONTROL) & PV_CONTROL_EN))
@@ -1292,6 +1309,32 @@ const struct vc4_pv_data bcm2711_pv4_data = {
},
};
+const struct vc4_pv_data bcm2712_pv0_data = {
+ .base = {
+ .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_HDMI0,
+ },
+};
+
+const struct vc4_pv_data bcm2712_pv1_data = {
+ .base = {
+ .debugfs_name = "crtc1_regs",
+ .hvs_available_channels = BIT(1),
+ .hvs_output = 1,
+ },
+ .fifo_depth = 64,
+ .pixels_per_clock = 1,
+ .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 },
@@ -1301,6 +1344,8 @@ static const struct of_device_id vc4_crtc_dt_match[] = {
{ .compatible = "brcm,bcm2711-pixelvalve2", .data = &bcm2711_pv2_data },
{ .compatible = "brcm,bcm2711-pixelvalve3", .data = &bcm2711_pv3_data },
{ .compatible = "brcm,bcm2711-pixelvalve4", .data = &bcm2711_pv4_data },
+ { .compatible = "brcm,bcm2712-pixelvalve0", .data = &bcm2712_pv0_data },
+ { .compatible = "brcm,bcm2712-pixelvalve1", .data = &bcm2712_pv1_data },
{}
};
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index aea585bf83eb..a68cea921c11 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -558,6 +558,8 @@ extern const struct vc4_pv_data bcm2711_pv1_data;
extern const struct vc4_pv_data bcm2711_pv2_data;
extern const struct vc4_pv_data bcm2711_pv3_data;
extern const struct vc4_pv_data bcm2711_pv4_data;
+extern const struct vc4_pv_data bcm2712_pv0_data;
+extern const struct vc4_pv_data bcm2712_pv1_data;
struct vc4_crtc {
struct drm_crtc base;
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 9226429539cf..731b13742ef5 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -155,6 +155,7 @@
# define PV_CONTROL_EN BIT(0)
#define PV_V_CONTROL 0x04
+# define PV_VCONTROL_ODD_TIMING BIT(29)
# define PV_VCONTROL_ODD_DELAY_MASK VC4_MASK(22, 6)
# define PV_VCONTROL_ODD_DELAY_SHIFT 6
# define PV_VCONTROL_ODD_FIRST BIT(5)
@@ -215,6 +216,11 @@
# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_SHIFT 2
# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_NO_SWAP 8
+#define PV_PIPE_INIT_CTRL 0x94
+# define PV_PIPE_INIT_CTRL_PV_INIT_WIDTH_MASK VC4_MASK(11, 8)
+# define PV_PIPE_INIT_CTRL_PV_INIT_IDLE_MASK VC4_MASK(7, 4)
+# define PV_PIPE_INIT_CTRL_PV_INIT_EN BIT(0)
+
#define SCALER_CHANNELS_COUNT 3
#define SCALER_DISPCTRL 0x00000000
--
2.34.1
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