git: ae2013c2e4d0 - stable/15 - linuxkpi: Add <linux/font.h>

The branch stable/15 has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=ae2013c2e4d075988c93d55f3f2f4c31556aea87

commit ae2013c2e4d075988c93d55f3f2f4c31556aea87
Author:     Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
AuthorDate: 2025-08-12 22:00:10 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2026-04-22 20:56:56 +0000

    linuxkpi: Add <linux/font.h>
    
    The header defines the minimum to allow the DRM generic code to build.
    The only function used so far is `get_default_font()`, as part of a
    DRM-specific panic handler. We do not use this panic handler on FreeBSD.
    
    For now, it returns a NULL value. It should probably map to a vt(4)
    font.
    
    The DRM generic code started to use it in Linux 6.10 as part of the
    panic handler.
    
    Reviewed by:    bz, christos
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D54491
    
    (cherry picked from commit 514d37fa268b8b181e3632d7f138bd09aa15683c)
---
 sys/compat/linuxkpi/common/include/linux/font.h | 33 +++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/font.h b/sys/compat/linuxkpi/common/include/linux/font.h
new file mode 100644
index 000000000000..45daa00b61f0
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/font.h
@@ -0,0 +1,33 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025-2026 The FreeBSD Foundation
+ * Copyright (c) 2025-2026 Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
+ *
+ * This software was developed by Jean-Sébastien Pédron under sponsorship
+ * from the FreeBSD Foundation.
+ */
+
+#ifndef _LINUXKPI_LINUX_FONT_H_
+#define	_LINUXKPI_LINUX_FONT_H_
+
+#include <linux/types.h>
+
+struct font_desc {
+	const char *name;
+	const void *data;
+	int idx;
+	unsigned int width;
+	unsigned int height;
+	unsigned int charcount;
+	int pref;
+};
+
+static inline const struct font_desc *
+get_default_font(int xres, int yres, unsigned long *font_w,
+    unsigned long *font_h)
+{
+	return (NULL);
+}
+
+#endif