Merge tag 'fbdev-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Pull fbdev updates from Helge Deller:
 "A major refactorization by Thomas Zimmermann from SUSE regarding
  handling of console font data, addition of helpers for console font
  rotation and split into individual components for glyphs, fonts and
  the overall fbcon state.

  And there is the round of usual code cleanups and fixes:

  Cleanups:
   - atyfb: Remove unused fb_list (Geert Uytterhoeven)
   - goldfishfb, wmt_ge_rops: use devm_platform_ioremap_resource() (Amin GATTOUT)
   - matroxfb: Mark variable with __maybe_unused (Andy Shevchenko)
   - omapfb: Add missing error check for clk_get() (Chen Ni)
   - tdfxfb: Make the VGA register initialisation a bit more obvious (Daniel Palmer)
   - macfb: Replace deprecated strcpy with strscpy (Thorsten Blum)

  Fixes:
   - tdfxfb, udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO (Greg Kroah-Hartman)
   - omap2: fix inconsistent lock returns in omapfb_mmap (Hongling Zeng)
   - viafb: check ioremap return value in viafb_lcd_get_mobile_state (Wang Jun)"

* tag 'fbdev-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (40 commits)
  fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
  fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
  fbdev: omap2: fix inconsistent lock returns in omapfb_mmap
  MAINTAINERS: Add dedicated entry for fbcon
  fbcon: Put font-rotation state into separate struct
  fbcon: Fill cursor mask in helper function
  lib/fonts: Implement font rotation
  lib/fonts: Refactor glyph-rotation helpers
  lib/fonts: Refactor glyph-pattern helpers
  lib/fonts: Implement glyph rotation
  lib/fonts: Clean up Makefile
  lib/fonts: Provide helpers for calculating glyph pitch and size
  vt: Implement helpers for struct vc_font in source file
  fbcon: Avoid OOB font access if console rotation fails
  fbdev: atyfb: Remove unused fb_list
  fbdev: matroxfb: Mark variable with __maybe_unused to avoid W=1 build break
  fbdev: update help text for CONFIG_FB_NVIDIA
  fbdev: omapfb: Add missing error check for clk_get()
  fbdev: viafb: check ioremap return value in viafb_lcd_get_mobile_state
  lib/fonts: Remove internal symbols and macros from public header file
  ...

1 files changed, 30 insertions, 3 deletions

diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index d5ca855116df..fe915afdece5 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -13,8 +13,8 @@
 #ifndef _LINUX_CONSOLE_STRUCT_H
 #define _LINUX_CONSOLE_STRUCT_H
 
-#include <linux/wait.h>
 #include <linux/vt.h>
+#include <linux/wait.h>
 #include <linux/workqueue.h>
 
 struct uni_pagedict;
@@ -58,6 +58,33 @@ struct vc_state {
 	bool		reverse;
 };
 
+/**
+ * struct vc_font - Describes a font
+ * @width: The width of a single glyph in bits
+ * @height: The height of a single glyph in scanlines
+ * @charcount: The number of glyphs in the font
+ * @data: The raw font data
+ *
+ * Font data is organized as an array of glyphs. Each glyph is a bitmap with
+ * set bits indicating the foreground color. Unset bits indicate background
+ * color. The fields @width and @height store a single glyph's number of
+ * horizontal bits and vertical scanlines. If width is not a multiple of 8,
+ * there are trailing bits to fill up the byte. These bits should not be drawn.
+ *
+ * The field @data points to the first glyph's first byte. The value @charcount
+ * gives the number of glyphs in the font. There are no empty scanlines between
+ * two adjacent glyphs.
+ */
+struct vc_font {
+	unsigned int width;
+	unsigned int height;
+	unsigned int charcount;
+	const unsigned char *data;
+};
+
+unsigned int vc_font_pitch(const struct vc_font *font);
+unsigned int vc_font_size(const struct vc_font *font);
+
 /*
  * Example: vc_data of a console that was scrolled 3 lines down.
  *
@@ -120,9 +147,9 @@ struct vc_data {
 	unsigned short	vc_complement_mask;	/* [#] Xor mask for mouse pointer */
 	unsigned short	vc_s_complement_mask;	/* Saved mouse pointer mask */
 	unsigned long	vc_pos;			/* Cursor address */
-	/* fonts */	
+	/* fonts */
 	unsigned short	vc_hi_font_mask;	/* [#] Attribute set for upper 256 chars of font or 0 if not supported */
-	struct console_font vc_font;		/* Current VC font set */
+	struct vc_font vc_font;			/* Current VC font set */
 	unsigned short	vc_video_erase_char;	/* Background erase character */
 	/* VT terminal data */
 	unsigned int	vc_state;		/* Escape sequence parser state */