Merge tag 'fbdev-v4.14' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:

 - make fbcon a built-time depency for fbdev (fbcon was tristate option
   before, now it is a bool) - this is a first step in preparations for
   making console_lock usage saner (currently it acts like the BKL for
   all things fbdev/fbcon) (Daniel Vetter)

 - add fbcon=margin:<color> command line option to select the fbcon
   margin color (David Lechner)

 - add DMI quirk table for x86 systems which need fbcon rotation
   (devices like Asus T100HA, GPD Pocket, the GPD win and the I.T.Works
   TW891) (Hans de Goede)

 - fix 1bpp logo support for unusual width (needed by LEGO MINDSTORMS
   EV3) (David Lechner)

 - enable Xilinx FB driver for ARM ZynqMP platform (Michal Simek)

 - fix use after free in the error path of udlfb driver (Anton Vasilyev)

 - fix error return code handling in pxa3xx_gcu driver (Gustavo A. R.
   Silva)

 - fix bootparams.screeninfo arguments checking in vgacon (Jan H.
   Schönherr)

 - do not leak uninitialized padding in clk to userspace in the debug
   code of atyfb driver (Vladis Dronov)

 - fix compiler warnings in fbcon code and matroxfb driver (Arnd
   Bergmann)

 - convert fbdev susbsytem to using %pOF instead of full_name (Rob
   Herring)

 - structures constifications (Arvind Yadav, Bhumika Goyal, Gustavo A.
   R. Silva, Julia Lawall)

 - misc cleanups (Gustavo A. R. Silva, Hyun Kwon, Julia Lawall, Kuninori
   Morimoto, Lynn Lei)

* tag 'fbdev-v4.14' of git://github.com/bzolnier/linux: (75 commits)
  video/console: Update BIOS dates list for GPD win console rotation DMI quirk
  video/console: Add rotated LCD-panel DMI quirk for the VIOS LTH17
  video: fbdev: sis: fix duplicated code for different branches
  video: fbdev: make fb_var_screeninfo const
  video: fbdev: aty: do not leak uninitialized padding in clk to userspace
  vgacon: Prevent faulty bootparams.screeninfo from causing harm
  video: fbdev: make fb_videomode const
  video/console: Add new BIOS date for GPD pocket to dmi quirk table
  fbcon: remove restriction on margin color
  video: ARM CLCD: constify amba_id
  video: fm2fb: constify zorro_device_id
  video: fbdev: annotate fb_fix_screeninfo with const and __initconst
  omapfb: constify omap_video_timings structures
  video: fbdev: udlfb: Fix use after free on dlfb_usb_probe error path
  fbdev: i810: make fb_ops const
  fbdev: matrox: make fb_ops const
  video: fbdev: pxa3xx_gcu: fix error return code in pxa3xx_gcu_probe()
  video: fbdev: Enable Xilinx FB for ZynqMP
  video: fbdev: Fix multiple style issues in xilinxfb
  video: fbdev: udlfb: constify usb_device_id.
  ...

1 files changed, 112 insertions, 0 deletions

diff --git a/drivers/video/fbdev/core/fbcon_rotate.c b/drivers/video/fbdev/core/fbcon_rotate.c
new file mode 100644
index 000000000000..8a51e4d95cc5
--- /dev/null
+++ b/drivers/video/fbdev/core/fbcon_rotate.c
@@ -0,0 +1,112 @@
+/*
+ *  linux/drivers/video/console/fbcon_rotate.c -- Software Rotation
+ *
+ *      Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/fb.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+#include <asm/types.h>
+#include "fbcon.h"
+#include "fbcon_rotate.h"
+
+static int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc)
+{
+	struct fbcon_ops *ops = info->fbcon_par;
+	int len, err = 0;
+	int s_cellsize, d_cellsize, i;
+	const u8 *src;
+	u8 *dst;
+
+	if (vc->vc_font.data == ops->fontdata &&
+	    ops->p->con_rotate == ops->cur_rotate)
+		goto finished;
+
+	src = ops->fontdata = vc->vc_font.data;
+	ops->cur_rotate = ops->p->con_rotate;
+	len = (!ops->p->userfont) ? 256 : FNTCHARCNT(src);
+	s_cellsize = ((vc->vc_font.width + 7)/8) *
+		vc->vc_font.height;
+	d_cellsize = s_cellsize;
+
+	if (ops->rotate == FB_ROTATE_CW ||
+	    ops->rotate == FB_ROTATE_CCW)
+		d_cellsize = ((vc->vc_font.height + 7)/8) *
+			vc->vc_font.width;
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	if (ops->fd_size < d_cellsize * len) {
+		dst = kmalloc(d_cellsize * len, GFP_KERNEL);
+
+		if (dst == NULL) {
+			err = -ENOMEM;
+			goto finished;
+		}
+
+		ops->fd_size = d_cellsize * len;
+		kfree(ops->fontbuffer);
+		ops->fontbuffer = dst;
+	}
+
+	dst = ops->fontbuffer;
+	memset(dst, 0, ops->fd_size);
+
+	switch (ops->rotate) {
+	case FB_ROTATE_UD:
+		for (i = len; i--; ) {
+			rotate_ud(src, dst, vc->vc_font.width,
+				  vc->vc_font.height);
+
+			src += s_cellsize;
+			dst += d_cellsize;
+		}
+		break;
+	case FB_ROTATE_CW:
+		for (i = len; i--; ) {
+			rotate_cw(src, dst, vc->vc_font.width,
+				  vc->vc_font.height);
+			src += s_cellsize;
+			dst += d_cellsize;
+		}
+		break;
+	case FB_ROTATE_CCW:
+		for (i = len; i--; ) {
+			rotate_ccw(src, dst, vc->vc_font.width,
+				   vc->vc_font.height);
+			src += s_cellsize;
+			dst += d_cellsize;
+		}
+		break;
+	}
+
+finished:
+	return err;
+}
+
+void fbcon_set_rotate(struct fbcon_ops *ops)
+{
+	ops->rotate_font = fbcon_rotate_font;
+
+	switch(ops->rotate) {
+	case FB_ROTATE_CW:
+		fbcon_rotate_cw(ops);
+		break;
+	case FB_ROTATE_UD:
+		fbcon_rotate_ud(ops);
+		break;
+	case FB_ROTATE_CCW:
+		fbcon_rotate_ccw(ops);
+		break;
+	}
+}
+EXPORT_SYMBOL(fbcon_set_rotate);