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15280316fa
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>
43 lines
1.3 KiB
Diff
43 lines
1.3 KiB
Diff
From 35f881ca59d6f8bbf49889a792d3539d9bab6ed2 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Mon, 9 Oct 2023 16:34:36 +0100
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Subject: [PATCH 0679/1085] drm/fb-helper: Look up preferred fbdev node number
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from DT
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For situations where there are multiple DRM cards in a system,
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add a query of DT for "drm_fb" designations for cards to set
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their preferred /dev/fbN designation.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/drm_fb_helper.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/drm_fb_helper.c
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+++ b/drivers/gpu/drm/drm_fb_helper.c
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@@ -1851,7 +1851,7 @@ __drm_fb_helper_initial_config_and_unloc
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struct drm_device *dev = fb_helper->dev;
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struct fb_info *info;
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unsigned int width, height;
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- int ret;
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+ int ret, id;
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width = dev->mode_config.max_width;
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height = dev->mode_config.max_height;
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@@ -1879,6 +1879,15 @@ __drm_fb_helper_initial_config_and_unloc
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* register the fbdev emulation instance in kernel_fb_helper_list. */
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mutex_unlock(&fb_helper->lock);
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+ id = of_alias_get_highest_id("drm_fb");
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+ if (id >= 0)
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+ fb_set_lowest_dynamic_fb(id + 1);
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+
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+ id = of_alias_get_id(dev->dev->of_node, "drm_fb");
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+ if (id >= 0) {
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+ info->node = id;
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+ info->custom_fb_num = true;
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+ }
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ret = register_framebuffer(info);
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if (ret < 0)
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return ret;
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