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openwrt/target/linux/bcm27xx/patches-6.6/950-0679-drm-fb-helper-Look-up-preferred-fbdev-node-number-fr.patch
John Audia 15280316fa kernel: bump 6.6 to 6.6.50
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.50

All patch automatically rebased.

Test version: r27317-8e6543fae5
Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/16351
Signed-off-by: Nick Hainke <vincent@systemli.org>
2024-09-08 21:29:13 +02:00

43 lines
1.3 KiB
Diff

From 35f881ca59d6f8bbf49889a792d3539d9bab6ed2 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 9 Oct 2023 16:34:36 +0100
Subject: [PATCH 0679/1085] drm/fb-helper: Look up preferred fbdev node number
from DT
For situations where there are multiple DRM cards in a system,
add a query of DT for "drm_fb" designations for cards to set
their preferred /dev/fbN designation.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/drm_fb_helper.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1851,7 +1851,7 @@ __drm_fb_helper_initial_config_and_unloc
struct drm_device *dev = fb_helper->dev;
struct fb_info *info;
unsigned int width, height;
- int ret;
+ int ret, id;
width = dev->mode_config.max_width;
height = dev->mode_config.max_height;
@@ -1879,6 +1879,15 @@ __drm_fb_helper_initial_config_and_unloc
* register the fbdev emulation instance in kernel_fb_helper_list. */
mutex_unlock(&fb_helper->lock);
+ id = of_alias_get_highest_id("drm_fb");
+ if (id >= 0)
+ fb_set_lowest_dynamic_fb(id + 1);
+
+ id = of_alias_get_id(dev->dev->of_node, "drm_fb");
+ if (id >= 0) {
+ info->node = id;
+ info->custom_fb_num = true;
+ }
ret = register_framebuffer(info);
if (ret < 0)
return ret;