openwrt/target/linux/bcm27xx/patches-6.6/950-0689-drm-vc4_fkms-Fix-up-interrupt-handler-for-both-2835-.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

110 lines
3.5 KiB
Diff

From 31ada291ea34aac5dd5eba01304095ba3e6e2573 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Fri, 20 Oct 2023 17:09:54 +0100
Subject: [PATCH 0689/1085] drm/vc4_fkms: Fix up interrupt handler for both
2835/2711 and 2712
2712 has switched from using the SMI peripheral to another interrupt
source for the vsync interrupt, so handle both sources cleanly.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_firmware_kms.c | 48 ++++++++++++++++++++------
1 file changed, 38 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
@@ -47,9 +47,15 @@ struct get_display_cfg {
u32 max_pixel_clock[2]; //Max pixel clock for each display
};
+enum vc4_fkms_revision {
+ BCM2835_6_7,
+ BCM2711,
+ BCM2712,
+};
+
struct vc4_fkms {
struct get_display_cfg cfg;
- bool bcm2711;
+ enum vc4_fkms_revision revision;
};
#define PLANES_PER_CRTC 8
@@ -1147,7 +1153,7 @@ vc4_crtc_mode_valid(struct drm_crtc *crt
/* Pi4 can't generate odd horizontal timings on HDMI, so reject modes
* that would set them.
*/
- if (fkms->bcm2711 &&
+ if (fkms->revision >= BCM2711 &&
(vc4_fkms_crtc->display_number == 2 || vc4_fkms_crtc->display_number == 7) &&
!(mode->flags & DRM_MODE_FLAG_DBLCLK) &&
((mode->hdisplay | /* active */
@@ -1265,6 +1271,20 @@ static irqreturn_t vc4_crtc_irq_handler(
return ret;
}
+static irqreturn_t vc4_crtc2712_irq_handler(int irq, void *data)
+{
+ struct vc4_fkms_crtc **crtc_list = data;
+ int i;
+
+ for (i = 0; crtc_list[i]; i++) {
+ if (crtc_list[i]->vblank_enabled)
+ drm_crtc_handle_vblank(&crtc_list[i]->base);
+ vc4_crtc_handle_page_flip(crtc_list[i]);
+ }
+
+ return IRQ_HANDLED;
+}
+
static int vc4_fkms_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
@@ -1350,9 +1370,12 @@ static const struct drm_crtc_helper_func
};
static const struct of_device_id vc4_firmware_kms_dt_match[] = {
- { .compatible = "raspberrypi,rpi-firmware-kms" },
+ { .compatible = "raspberrypi,rpi-firmware-kms",
+ .data = (void *)BCM2835_6_7 },
{ .compatible = "raspberrypi,rpi-firmware-kms-2711",
- .data = (void *)1 },
+ .data = (void *)BCM2711 },
+ { .compatible = "raspberrypi,rpi-firmware-kms-2712",
+ .data = (void *)BCM2712 },
{}
};
@@ -1922,8 +1945,7 @@ static int vc4_fkms_bind(struct device *
match = of_match_device(vc4_firmware_kms_dt_match, dev);
if (!match)
return -ENODEV;
- if (match->data)
- fkms->bcm2711 = true;
+ fkms->revision = (enum vc4_fkms_revision)match->data;
firmware_node = of_parse_phandle(dev->of_node, "brcm,firmware", 0);
vc4->firmware = devm_rpi_firmware_get(&pdev->dev, firmware_node);
@@ -1990,10 +2012,16 @@ static int vc4_fkms_bind(struct device *
if (IS_ERR(crtc_list[0]->regs))
DRM_ERROR("Oh dear, failed to map registers\n");
- writel(0, crtc_list[0]->regs + SMICS);
- ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
- vc4_crtc_irq_handler, 0,
- "vc4 firmware kms", crtc_list);
+ if (fkms->revision >= BCM2712) {
+ ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
+ vc4_crtc2712_irq_handler, 0,
+ "vc4 firmware kms", crtc_list);
+ } else {
+ writel(0, crtc_list[0]->regs + SMICS);
+ ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
+ vc4_crtc_irq_handler, 0,
+ "vc4 firmware kms", crtc_list);
+ }
if (ret)
DRM_ERROR("Oh dear, failed to register IRQ\n");
} else {