File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/video/console/fbcon_ud.c b/drivers/video/console/fbcon_ud.c
new file mode 100644
index 0000000..19e3714
--- /dev/null
+++ b/drivers/video/console/fbcon_ud.c
@@ -0,0 +1,452 @@
+/*
+ * linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 180 degrees
+ *
+ * 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"
+
+/*
+ * Rotation 180 degrees
+ */
+
+static void ud_update_attr(u8 *dst, u8 *src, int attribute,
+ struct vc_data *vc)
+{
+ int i, offset = (vc->vc_font.height < 10) ? 1 : 2;
+ int width = (vc->vc_font.width + 7) >> 3;
+ unsigned int cellsize = vc->vc_font.height * width;
+ u8 c;
+
+ offset = offset * width;
+
+ for (i = 0; i < cellsize; i++) {
+ c = src[i];
+ if (attribute & FBCON_ATTRIBUTE_UNDERLINE && i < offset)
+ c = 0xff;
+ if (attribute & FBCON_ATTRIBUTE_BOLD)
+ c |= c << 1;
+ if (attribute & FBCON_ATTRIBUTE_REVERSE)
+ c = ~c;
+ dst[i] = c;
+ }
+}
+
+
+static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy,
+ int sx, int dy, int dx, int height, int width)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct fb_copyarea area;
+ u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vxres = GETVXRES(ops->p->scrollmode, info);
+
+ area.sy = vyres - ((sy + height) * vc->vc_font.height);
+ area.sx = vxres - ((sx + width) * vc->vc_font.width);
+ area.dy = vyres - ((dy + height) * vc->vc_font.height);
+ area.dx = vxres - ((dx + width) * vc->vc_font.width);
+ area.height = height * vc->vc_font.height;
+ area.width = width * vc->vc_font.width;
+
+ info->fbops->fb_copyarea(info, &area);
+}
+
+static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,
+ int sx, int height, int width)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct fb_fillrect region;
+ int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
+ u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vxres = GETVXRES(ops->p->scrollmode, info);
+
+ region.color = attr_bgcol_ec(bgshift,vc,info);
+ region.dy = vyres - ((sy + height) * vc->vc_font.height);
+ region.dx = vxres - ((sx + width) * vc->vc_font.width);
+ region.width = width * vc->vc_font.width;
+ region.height = height * vc->vc_font.height;
+ region.rop = ROP_COPY;
+
+ info->fbops->fb_fillrect(info, ®ion);
+}
+
+static inline void ud_putcs_aligned(struct vc_data *vc, struct fb_info *info,
+ const u16 *s, u32 attr, u32 cnt,
+ u32 d_pitch, u32 s_pitch, u32 cellsize,
+ struct fb_image *image, u8 *buf, u8 *dst)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+ u32 idx = vc->vc_font.width >> 3;
+ u8 *src;
+
+ while (cnt--) {
+ src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
+
+ if (attr) {
+ ud_update_attr(buf, src, attr, vc);
+ src = buf;
+ }
+
+ if (likely(idx == 1))
+ __fb_pad_aligned_buffer(dst, d_pitch, src, idx,
+ image->height);
+ else
+ fb_pad_aligned_buffer(dst, d_pitch, src, idx,
+ image->height);
+
+ dst += s_pitch;
+ }
+
+ info->fbops->fb_imageblit(info, image);
+}
+
+static inline void ud_putcs_unaligned(struct vc_data *vc,
+ struct fb_info *info, const u16 *s,
+ u32 attr, u32 cnt, u32 d_pitch,
+ u32 s_pitch, u32 cellsize,
+ struct fb_image *image, u8 *buf,
+ u8 *dst)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+ u32 shift_low = 0, mod = vc->vc_font.width % 8;
+ u32 shift_high = 8;
+ u32 idx = vc->vc_font.width >> 3;
+ u8 *src;
+
+ while (cnt--) {
+ src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
+
+ if (attr) {
+ ud_update_attr(buf, src, attr, vc);
+ src = buf;
+ }
+
+ fb_pad_unaligned_buffer(dst, d_pitch, src, idx,
+ image->height, shift_high,
+ shift_low, mod);
+ shift_low += mod;
+ dst += (shift_low >= 8) ? s_pitch : s_pitch - 1;
+ shift_low &= 7;
+ shift_high = 8 - shift_low;
+ }
+
+ info->fbops->fb_imageblit(info, image);
+
+}
+
+static void ud_putcs(struct vc_data *vc, struct fb_info *info,
+ const unsigned short *s, int count, int yy, int xx,
+ int fg, int bg)
+{
+ struct fb_image image;
+ struct fbcon_ops *ops = info->fbcon_par;
+ u32 width = (vc->vc_font.width + 7)/8;
+ u32 cellsize = width * vc->vc_font.height;
+ u32 maxcnt = info->pixmap.size/cellsize;
+ u32 scan_align = info->pixmap.scan_align - 1;
+ u32 buf_align = info->pixmap.buf_align - 1;
+ u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
+ u32 attribute = get_attribute(info, scr_readw(s));
+ u8 *dst, *buf = NULL;
+ u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vxres = GETVXRES(ops->p->scrollmode, info);
+
+ if (!ops->fontbuffer)
+ return;
+
+ image.fg_color = fg;
+ image.bg_color = bg;
+ image.dy = vyres - ((yy * vc->vc_font.height) + vc->vc_font.height);
+ image.dx = vxres - ((xx + count) * vc->vc_font.width);
+ image.height = vc->vc_font.height;
+ image.depth = 1;
+
+ if (attribute) {
+ buf = kmalloc(cellsize, GFP_KERNEL);
+ if (!buf)
+ return;
+ }
+
+ s += count - 1;
+
+ while (count) {
+ if (count > maxcnt)
+ cnt = maxcnt;
+ else
+ cnt = count;
+
+ image.width = vc->vc_font.width * cnt;
+ pitch = ((image.width + 7) >> 3) + scan_align;
+ pitch &= ~scan_align;
+ size = pitch * image.height + buf_align;
+ size &= ~buf_align;
+ dst = fb_get_buffer_offset(info, &info->pixmap, size);
+ image.data = dst;
+
+ if (!mod)
+ ud_putcs_aligned(vc, info, s, attribute, cnt, pitch,
+ width, cellsize, &image, buf, dst);
+ else
+ ud_putcs_unaligned(vc, info, s, attribute, cnt, pitch,
+ width, cellsize, &image,
+ buf, dst);
+
+ image.dx += image.width;
+ count -= cnt;
+ s -= cnt;
+ xx += cnt;
+ }
+
+ /* buf is always NULL except when in monochrome mode, so in this case
+ it's a gain to check buf against NULL even though kfree() handles
+ NULL pointers just fine */
+ if (unlikely(buf))
+ kfree(buf);
+
+}
+
+static void ud_clear_margins(struct vc_data *vc, struct fb_info *info,
+ int bottom_only)
+{
+ unsigned int cw = vc->vc_font.width;
+ unsigned int ch = vc->vc_font.height;
+ unsigned int rw = info->var.xres - (vc->vc_cols*cw);
+ unsigned int bh = info->var.yres - (vc->vc_rows*ch);
+ struct fb_fillrect region;
+
+ region.color = 0;
+ region.rop = ROP_COPY;
+
+ if (rw && !bottom_only) {
+ region.dy = 0;
+ region.dx = info->var.xoffset;
+ region.width = rw;
+ region.height = info->var.yres_virtual;
+ info->fbops->fb_fillrect(info, ®ion);
+ }
+
+ if (bh) {
+ region.dy = info->var.yoffset;
+ region.dx = info->var.xoffset;
+ region.height = bh;
+ region.width = info->var.xres;
+ info->fbops->fb_fillrect(info, ®ion);
+ }
+}
+
+static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
+{
+ struct fb_cursor cursor;
+ struct fbcon_ops *ops = info->fbcon_par;
+ unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+ int w = (vc->vc_font.width + 7) >> 3, c;
+ int y = real_y(ops->p, vc->vc_y);
+ int attribute, use_sw = (vc->vc_cursor_type & 0x10);
+ int err = 1, dx, dy;
+ char *src;
+ u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vxres = GETVXRES(ops->p->scrollmode, info);
+
+ if (!ops->fontbuffer)
+ return;
+
+ cursor.set = 0;
+
+ if (softback_lines) {
+ if (y + softback_lines >= vc->vc_rows) {
+ mode = CM_ERASE;
+ ops->cursor_flash = 0;
+ return;
+ } else
+ y += softback_lines;
+ }
+
+ c = scr_readw((u16 *) vc->vc_pos);
+ attribute = get_attribute(info, c);
+ src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));
+
+ if (ops->cursor_state.image.data != src ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.data = src;
+ cursor.set |= FB_CUR_SETIMAGE;
+ }
+
+ if (attribute) {
+ u8 *dst;
+
+ dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC);
+ if (!dst)
+ return;
+ kfree(ops->cursor_data);
+ ops->cursor_data = dst;
+ ud_update_attr(dst, src, attribute, vc);
+ src = dst;
+ }
+
+ if (ops->cursor_state.image.fg_color != fg ||
+ ops->cursor_state.image.bg_color != bg ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.fg_color = fg;
+ ops->cursor_state.image.bg_color = bg;
+ cursor.set |= FB_CUR_SETCMAP;
+ }
+
+ if (ops->cursor_state.image.height != vc->vc_font.height ||
+ ops->cursor_state.image.width != vc->vc_font.width ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.height = vc->vc_font.height;
+ ops->cursor_state.image.width = vc->vc_font.width;
+ cursor.set |= FB_CUR_SETSIZE;
+ }
+
+ dy = vyres - ((y * vc->vc_font.height) + vc->vc_font.height);
+ dx = vxres - ((vc->vc_x * vc->vc_font.width) + vc->vc_font.width);
+
+ if (ops->cursor_state.image.dx != dx ||
+ ops->cursor_state.image.dy != dy ||
+ ops->cursor_reset) {
+ ops->cursor_state.image.dx = dx;
+ ops->cursor_state.image.dy = dy;
+ cursor.set |= FB_CUR_SETPOS;
+ }
+
+ if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
+ ops->cursor_reset) {
+ ops->cursor_state.hot.x = cursor.hot.y = 0;
+ cursor.set |= FB_CUR_SETHOT;
+ }
+
+ if (cursor.set & FB_CUR_SETSIZE ||
+ vc->vc_cursor_type != ops->p->cursor_shape ||
+ ops->cursor_state.mask == NULL ||
+ ops->cursor_reset) {
+ char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC);
+ int cur_height, size, i = 0;
+ u8 msk = 0xff;
+
+ if (!mask)
+ return;
+
+ kfree(ops->cursor_state.mask);
+ ops->cursor_state.mask = mask;
+
+ ops->p->cursor_shape = vc->vc_cursor_type;
+ cursor.set |= FB_CUR_SETSHAPE;
+
+ switch (ops->p->cursor_shape & CUR_HWMASK) {
+ case CUR_NONE:
+ cur_height = 0;
+ break;
+ case CUR_UNDERLINE:
+ cur_height = (vc->vc_font.height < 10) ? 1 : 2;
+ break;
+ case CUR_LOWER_THIRD:
+ cur_height = vc->vc_font.height/3;
+ break;
+ case CUR_LOWER_HALF:
+ cur_height = vc->vc_font.height >> 1;
+ break;
+ case CUR_TWO_THIRDS:
+ cur_height = (vc->vc_font.height << 1)/3;
+ break;
+ case CUR_BLOCK:
+ default:
+ cur_height = vc->vc_font.height;
+ break;
+ }
+
+ size = cur_height * w;
+
+ while (size--)
+ mask[i++] = msk;
+
+ size = (vc->vc_font.height - cur_height) * w;
+
+ while (size--)
+ mask[i++] = ~msk;
+ }
+
+ switch (mode) {
+ case CM_ERASE:
+ ops->cursor_state.enable = 0;
+ break;
+ case CM_DRAW:
+ case CM_MOVE:
+ default:
+ ops->cursor_state.enable = (use_sw) ? 0 : 1;
+ break;
+ }
+
+ cursor.image.data = src;
+ cursor.image.fg_color = ops->cursor_state.image.fg_color;
+ cursor.image.bg_color = ops->cursor_state.image.bg_color;
+ cursor.image.dx = ops->cursor_state.image.dx;
+ cursor.image.dy = ops->cursor_state.image.dy;
+ cursor.image.height = ops->cursor_state.image.height;
+ cursor.image.width = ops->cursor_state.image.width;
+ cursor.hot.x = ops->cursor_state.hot.x;
+ cursor.hot.y = ops->cursor_state.hot.y;
+ cursor.mask = ops->cursor_state.mask;
+ cursor.enable = ops->cursor_state.enable;
+ cursor.image.depth = 1;
+ cursor.rop = ROP_XOR;
+
+ if (info->fbops->fb_cursor)
+ err = info->fbops->fb_cursor(info, &cursor);
+
+ if (err)
+ soft_cursor(info, &cursor);
+
+ ops->cursor_reset = 0;
+}
+
+static int ud_update_start(struct fb_info *info)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ int xoffset, yoffset;
+ u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ int err;
+
+ xoffset = vxres - info->var.xres - ops->var.xoffset;
+ yoffset = vyres - info->var.yres - ops->var.yoffset;
+ if (yoffset < 0)
+ yoffset += vyres;
+ ops->var.xoffset = xoffset;
+ ops->var.yoffset = yoffset;
+ err = fb_pan_display(info, &ops->var);
+ ops->var.xoffset = info->var.xoffset;
+ ops->var.yoffset = info->var.yoffset;
+ ops->var.vmode = info->var.vmode;
+ return err;
+}
+
+void fbcon_rotate_ud(struct fbcon_ops *ops)
+{
+ ops->bmove = ud_bmove;
+ ops->clear = ud_clear;
+ ops->putcs = ud_putcs;
+ ops->clear_margins = ud_clear_margins;
+ ops->cursor = ud_cursor;
+ ops->update_start = ud_update_start;
+}
+EXPORT_SYMBOL(fbcon_rotate_ud);
+
+MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
+MODULE_DESCRIPTION("Console Rotation (180 degrees) Support");
+MODULE_LICENSE("GPL");