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From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: intel-xe@lists.freedesktop.org
Subject: [PATCH 02/14] drm/i915/fbdev: Extract bios_fb_ok()
Date: Tue, 12 May 2026 00:41:10 +0300	[thread overview]
Message-ID: <20260511214122.8468-3-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20260511214122.8468-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Pull the "is the BIOS FB OK?" checks to a helper function. We'll
add other relevant checks there later.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbdev.c | 26 +++++++++++++++-------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index df1d3d9dc3e5..f9c135400453 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -262,6 +262,23 @@ __intel_fbdev_fb_alloc(struct intel_display *display,
 
 }
 
+static bool bios_fb_ok(const struct intel_framebuffer *fb,
+		       const struct drm_fb_helper_surface_size *sizes)
+{
+	struct intel_display *display = to_intel_display(fb->base.dev);
+	int width = fb->base.width;
+	int height = fb->base.height;
+
+	if (sizes->fb_width > width || sizes->fb_height > height) {
+		drm_dbg_kms(display->drm,
+			    "BIOS fb too small (%dx%d), we require (%dx%d), releasing it\n",
+			    width, height, sizes->fb_width, sizes->fb_height);
+		return false;
+	}
+
+	return true;
+}
+
 int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
 				   struct drm_fb_helper_surface_size *sizes)
 {
@@ -279,14 +296,7 @@ int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
 
 	ifbdev->fb = NULL;
 
-	if (fb &&
-	    (sizes->fb_width > fb->base.width ||
-	     sizes->fb_height > fb->base.height)) {
-		drm_dbg_kms(display->drm,
-			    "BIOS fb too small (%dx%d), we require (%dx%d),"
-			    " releasing it\n",
-			    fb->base.width, fb->base.height,
-			    sizes->fb_width, sizes->fb_height);
+	if (fb && !bios_fb_ok(fb, sizes)) {
 		drm_framebuffer_put(&fb->base);
 		fb = NULL;
 	}
-- 
2.52.0


  parent reply	other threads:[~2026-05-11 21:41 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-11 21:41 [PATCH 00/14] drm/{i915,xe}: BIOS FB takeover fixes Ville Syrjala
2026-05-11 21:41 ` [PATCH 01/14] drm/i915: Disable the plane if initial plane config readout failed Ville Syrjala
2026-05-12 10:25   ` Jani Nikula
2026-05-11 21:41 ` Ville Syrjala [this message]
2026-05-12 10:29   ` [PATCH 02/14] drm/i915/fbdev: Extract bios_fb_ok() Jani Nikula
2026-05-11 21:41 ` [PATCH 03/14] drm/i915: Throw away the BIOS fb if has the wrong depth/bpp Ville Syrjala
2026-05-12 10:33   ` Jani Nikula
2026-05-11 21:41 ` [PATCH 04/14] drm/i915: Introduce intel_bo_fbdev_bios_fb_ok() Ville Syrjala
2026-05-11 21:41 ` [PATCH 05/14] drm/i915: Use drm_dbg_kms() for initial FB debugs Ville Syrjala
2026-05-12 10:40   ` Jani Nikula
2026-05-11 21:41 ` [PATCH 06/14] drm/xe: Do the initial FB size alignment earlier Ville Syrjala
2026-05-11 21:41 ` [PATCH 07/14] drm/xe/ggtt: Decouple lmem/stolen physcial offset from GGTT offset Ville Syrjala
2026-05-11 21:41 ` [PATCH 08/14] drm/xe: Print a debug message if we have no stolen for the initial FB Ville Syrjala
2026-05-12 10:45   ` Jani Nikula
2026-05-11 21:41 ` [PATCH 09/14] drm/xe: Abstract the initial FB PTE checks a bit Ville Syrjala
2026-05-12 10:48   ` Jani Nikula
2026-05-11 21:41 ` [PATCH 10/14] drm/xe: Check the PTE local memory bit for initial FB in stolen Ville Syrjala
2026-05-11 21:41 ` [PATCH 11/14] drm/xe: s/bar2/lmembar/ Ville Syrjala
2026-05-12 10:49   ` Jani Nikula
2026-05-11 21:41 ` [PATCH 12/14] drm/xe: Use the correct stolen offset in initial FB readout Ville Syrjala
2026-05-11 21:41 ` [PATCH 13/14] drm/i915: Fix BIOS FB memory region name debug prints Ville Syrjala
2026-05-11 21:41 ` [PATCH 14/14] drm/i915: Print the phys_base in addition to the dma_addr for the BIOS FB Ville Syrjala
2026-05-11 22:27 ` ✓ i915.CI.BAT: success for drm/{i915,xe}: BIOS FB takeover fixes Patchwork
2026-05-12  7:02 ` ✓ i915.CI.Full: " Patchwork

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