From 8299d1f057439f94c6a4412e2e5c5082b82a30c9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Sat, 21 Aug 2021 10:54:34 +0200 Subject: bcm27xx: add kernel 5.10 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted patches, wireless patches and defconfig patches. bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 4B v1.1 4G bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas --- ...Notify-the-firmware-when-DRM-is-in-charge.patch | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.10/950-0665-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch (limited to 'target/linux/bcm27xx/patches-5.10/950-0665-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch') diff --git a/target/linux/bcm27xx/patches-5.10/950-0665-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch b/target/linux/bcm27xx/patches-5.10/950-0665-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch new file mode 100644 index 0000000000..6bb1f6fd32 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0665-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch @@ -0,0 +1,54 @@ +From 154a12e5c0d417cae205b8e16431f29c627311e6 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard +Date: Wed, 23 Jun 2021 11:54:58 +0200 +Subject: [PATCH] drm/vc4: Notify the firmware when DRM is in charge + +Once the call to drm_fb_helper_remove_conflicting_framebuffers() has +been made, simplefb has been unregistered and the KMS driver is entirely +in charge of the display. + +Thus, we can notify the firmware it can free whatever resource it was +using to maintain simplefb functional. + +Signed-off-by: Maxime Ripard +--- + drivers/gpu/drm/vc4/vc4_drv.c | 19 +++++++++++++++++++ + 1 file changed, 19 insertions(+) + +--- a/drivers/gpu/drm/vc4/vc4_drv.c ++++ b/drivers/gpu/drm/vc4/vc4_drv.c +@@ -36,6 +36,8 @@ + #include + #include + ++#include ++ + #include "uapi/drm/vc4_drm.h" + + #include "vc4_drv.h" +@@ -305,8 +307,25 @@ static int vc4_drm_bind(struct device *d + if (ret) + return ret; + ++ node = of_parse_phandle(dev->of_node, "raspberrypi,firmware", 0); ++ if (node) { ++ vc4->firmware = rpi_firmware_get(dev->of_node); ++ of_node_put(node); ++ ++ if (!vc4->firmware) ++ return -EPROBE_DEFER; ++ } ++ + drm_fb_helper_remove_conflicting_framebuffers(NULL, "vc4drmfb", false); + ++ if (vc4->firmware) { ++ ret = rpi_firmware_property(vc4->firmware, ++ RPI_FIRMWARE_NOTIFY_DISPLAY_DONE, ++ NULL, 0); ++ if (ret) ++ drm_warn(drm, "Couldn't stop firmware display driver: %d\n", ret); ++ } ++ + ret = component_bind_all(dev, drm); + if (ret) + return ret; -- cgit v1.2.3