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[PATCH] fbcon: Console Rotation - Add support for 270-degree rotation
Add support for 270-degree (counterclockwise) rotation of the console. To activate, boot with: fbcon=rotate:3 Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Antonino A. Daplas
Linus Torvalds
parent
33ee82978c
commit
ed8c0e99f2
@ -32,7 +32,8 @@ ifeq ($(CONFIG_FB_TILEBLITTING),y)
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obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += tileblit.o
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endif
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ifeq ($(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION),y)
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obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon_rotate.o fbcon_cw.o fbcon_ud.o
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obj-$(CONFIG_FRAMEBUFFER_CONSOLE) += fbcon_rotate.o fbcon_cw.o fbcon_ud.o \
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fbcon_ccw.o
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endif
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obj-$(CONFIG_FB_STI) += sticore.o font.o
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428
drivers/video/console/fbcon_ccw.c
Normal file
428
drivers/video/console/fbcon_ccw.c
Normal file
@ -0,0 +1,428 @@
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/*
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* linux/drivers/video/console/fbcon_ccw.c -- Software Rotation - 270 degrees
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*
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* Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/fb.h>
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#include <linux/vt_kern.h>
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#include <linux/console.h>
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#include <asm/types.h>
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#include "fbcon.h"
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#include "fbcon_rotate.h"
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/*
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* Rotation 270 degrees
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*/
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static inline void ccw_update_attr(u8 *dst, u8 *src, int attribute,
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struct vc_data *vc)
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{
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int i, j, offset = (vc->vc_font.height < 10) ? 1 : 2;
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int width = (vc->vc_font.height + 7) >> 3;
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int mod = vc->vc_font.height % 8;
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u8 c, msk = ~(0xff << offset), msk1 = 0;
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if (mod)
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msk <<= (8 - mod);
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if (offset > mod)
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set_bit(FBCON_BIT(7), (void *)&msk1);
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for (i = 0; i < vc->vc_font.width; i++) {
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for (j = 0; j < width; j++) {
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c = *src;
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if (attribute & FBCON_ATTRIBUTE_UNDERLINE) {
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if (j == width - 1)
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c |= msk;
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if (msk1 && j == width - 2)
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c |= msk1;
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}
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if (attribute & FBCON_ATTRIBUTE_BOLD && i)
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*(dst - width) |= c;
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if (attribute & FBCON_ATTRIBUTE_REVERSE)
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c = ~c;
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src++;
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*dst++ = c;
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}
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}
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}
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static void ccw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
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int sx, int dy, int dx, int height, int width)
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{
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struct display *p = &fb_display[vc->vc_num];
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struct fb_copyarea area;
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u32 vyres = GETVYRES(p->scrollmode, info);
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area.sx = sy * vc->vc_font.height;
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area.sy = vyres - ((sx + width) * vc->vc_font.width);
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area.dx = dy * vc->vc_font.height;
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area.dy = vyres - ((dx + width) * vc->vc_font.width);
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area.width = height * vc->vc_font.height;
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area.height = width * vc->vc_font.width;
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info->fbops->fb_copyarea(info, &area);
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}
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static void ccw_clear(struct vc_data *vc, struct fb_info *info, int sy,
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int sx, int height, int width)
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{
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struct display *p = &fb_display[vc->vc_num];
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struct fb_fillrect region;
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int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
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u32 vyres = GETVYRES(p->scrollmode, info);
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region.color = attr_bgcol_ec(bgshift,vc);
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region.dx = sy * vc->vc_font.height;
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region.dy = vyres - ((sx + width) * vc->vc_font.width);
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region.height = width * vc->vc_font.width;
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region.width = height * vc->vc_font.height;
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region.rop = ROP_COPY;
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info->fbops->fb_fillrect(info, ®ion);
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}
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static inline void ccw_putcs_aligned(struct vc_data *vc, struct fb_info *info,
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const u16 *s, u32 attr, u32 cnt,
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u32 d_pitch, u32 s_pitch, u32 cellsize,
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struct fb_image *image, u8 *buf, u8 *dst)
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{
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struct fbcon_ops *ops = info->fbcon_par;
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u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
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u32 idx = (vc->vc_font.height + 7) >> 3;
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u8 *src;
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while (cnt--) {
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src = ops->fontbuffer + (scr_readw(s--) & charmask)*cellsize;
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if (attr) {
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ccw_update_attr(buf, src, attr, vc);
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src = buf;
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}
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if (likely(idx == 1))
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__fb_pad_aligned_buffer(dst, d_pitch, src, idx,
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vc->vc_font.width);
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else
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fb_pad_aligned_buffer(dst, d_pitch, src, idx,
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vc->vc_font.width);
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dst += d_pitch * vc->vc_font.width;
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}
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info->fbops->fb_imageblit(info, image);
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}
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static void ccw_putcs(struct vc_data *vc, struct fb_info *info,
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const unsigned short *s, int count, int yy, int xx,
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int fg, int bg)
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{
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struct fb_image image;
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struct display *p = &fb_display[vc->vc_num];
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struct fbcon_ops *ops = info->fbcon_par;
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u32 width = (vc->vc_font.height + 7)/8;
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u32 cellsize = width * vc->vc_font.width;
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u32 maxcnt = info->pixmap.size/cellsize;
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u32 scan_align = info->pixmap.scan_align - 1;
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u32 buf_align = info->pixmap.buf_align - 1;
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u32 cnt, pitch, size;
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u32 attribute = get_attribute(info, scr_readw(s));
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u8 *dst, *buf = NULL;
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u32 vyres = GETVYRES(p->scrollmode, info);
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if (!ops->fontbuffer)
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return;
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image.fg_color = fg;
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image.bg_color = bg;
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image.dx = yy * vc->vc_font.height;
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image.dy = vyres - ((xx + count) * vc->vc_font.width);
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image.width = vc->vc_font.height;
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image.depth = 1;
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if (attribute) {
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buf = kmalloc(cellsize, GFP_KERNEL);
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if (!buf)
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return;
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}
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s += count - 1;
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while (count) {
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if (count > maxcnt)
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cnt = maxcnt;
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else
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cnt = count;
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image.height = vc->vc_font.width * cnt;
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pitch = ((image.width + 7) >> 3) + scan_align;
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pitch &= ~scan_align;
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size = pitch * image.height + buf_align;
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size &= ~buf_align;
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dst = fb_get_buffer_offset(info, &info->pixmap, size);
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image.data = dst;
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ccw_putcs_aligned(vc, info, s, attribute, cnt, pitch,
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width, cellsize, &image, buf, dst);
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image.dy += image.height;
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count -= cnt;
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s -= cnt;
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}
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/* buf is always NULL except when in monochrome mode, so in this case
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it's a gain to check buf against NULL even though kfree() handles
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NULL pointers just fine */
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if (unlikely(buf))
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kfree(buf);
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}
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static void ccw_clear_margins(struct vc_data *vc, struct fb_info *info,
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int bottom_only)
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{
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unsigned int cw = vc->vc_font.width;
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unsigned int ch = vc->vc_font.height;
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unsigned int rw = info->var.yres - (vc->vc_cols*cw);
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unsigned int bh = info->var.xres - (vc->vc_rows*ch);
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unsigned int bs = vc->vc_rows*ch;
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struct fb_fillrect region;
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int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
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region.color = attr_bgcol_ec(bgshift,vc);
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region.rop = ROP_COPY;
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if (rw && !bottom_only) {
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region.dx = 0;
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region.dy = info->var.yoffset;
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region.height = rw;
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region.width = info->var.xres_virtual;
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info->fbops->fb_fillrect(info, ®ion);
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}
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if (bh) {
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region.dx = info->var.xoffset + bs;
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region.dy = 0;
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region.height = info->var.yres_virtual;
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region.width = bh;
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info->fbops->fb_fillrect(info, ®ion);
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}
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}
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static void ccw_cursor(struct vc_data *vc, struct fb_info *info,
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struct display *p, int mode, int softback_lines,
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int fg, int bg)
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{
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struct fb_cursor cursor;
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struct fbcon_ops *ops = (struct fbcon_ops *) info->fbcon_par;
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unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
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int w = (vc->vc_font.height + 7) >> 3, c;
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int y = real_y(p, vc->vc_y);
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int attribute, use_sw = (vc->vc_cursor_type & 0x10);
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int err = 1, dx, dy;
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char *src;
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u32 vyres = GETVYRES(p->scrollmode, info);
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if (!ops->fontbuffer)
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return;
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cursor.set = 0;
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if (softback_lines) {
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if (y + softback_lines >= vc->vc_rows) {
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mode = CM_ERASE;
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ops->cursor_flash = 0;
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return;
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} else
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y += softback_lines;
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}
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c = scr_readw((u16 *) vc->vc_pos);
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attribute = get_attribute(info, c);
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src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
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if (ops->cursor_state.image.data != src ||
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ops->cursor_reset) {
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ops->cursor_state.image.data = src;
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cursor.set |= FB_CUR_SETIMAGE;
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}
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if (attribute) {
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u8 *dst;
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dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC);
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if (!dst)
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return;
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kfree(ops->cursor_data);
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ops->cursor_data = dst;
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ccw_update_attr(dst, src, attribute, vc);
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src = dst;
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}
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if (ops->cursor_state.image.fg_color != fg ||
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ops->cursor_state.image.bg_color != bg ||
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ops->cursor_reset) {
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ops->cursor_state.image.fg_color = fg;
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ops->cursor_state.image.bg_color = bg;
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cursor.set |= FB_CUR_SETCMAP;
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}
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if (ops->cursor_state.image.height != vc->vc_font.width ||
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ops->cursor_state.image.width != vc->vc_font.height ||
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ops->cursor_reset) {
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ops->cursor_state.image.height = vc->vc_font.width;
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ops->cursor_state.image.width = vc->vc_font.height;
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cursor.set |= FB_CUR_SETSIZE;
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}
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dx = y * vc->vc_font.height;
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dy = vyres - ((vc->vc_x + 1) * vc->vc_font.width);
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if (ops->cursor_state.image.dx != dx ||
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ops->cursor_state.image.dy != dy ||
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ops->cursor_reset) {
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ops->cursor_state.image.dx = dx;
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ops->cursor_state.image.dy = dy;
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cursor.set |= FB_CUR_SETPOS;
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}
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if (ops->cursor_state.hot.x || ops->cursor_state.hot.y ||
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ops->cursor_reset) {
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ops->cursor_state.hot.x = cursor.hot.y = 0;
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cursor.set |= FB_CUR_SETHOT;
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}
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if (cursor.set & FB_CUR_SETSIZE ||
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vc->vc_cursor_type != p->cursor_shape ||
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ops->cursor_state.mask == NULL ||
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ops->cursor_reset) {
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char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC);
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int cur_height, size, i = 0;
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int width = (vc->vc_font.width + 7)/8;
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if (!mask)
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return;
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tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC);
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if (!tmp) {
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kfree(mask);
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return;
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}
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kfree(ops->cursor_state.mask);
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ops->cursor_state.mask = mask;
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p->cursor_shape = vc->vc_cursor_type;
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cursor.set |= FB_CUR_SETSHAPE;
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switch (p->cursor_shape & CUR_HWMASK) {
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case CUR_NONE:
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cur_height = 0;
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break;
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case CUR_UNDERLINE:
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cur_height = (vc->vc_font.height < 10) ? 1 : 2;
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break;
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case CUR_LOWER_THIRD:
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cur_height = vc->vc_font.height/3;
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break;
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case CUR_LOWER_HALF:
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cur_height = vc->vc_font.height >> 1;
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break;
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case CUR_TWO_THIRDS:
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cur_height = (vc->vc_font.height << 1)/3;
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break;
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case CUR_BLOCK:
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default:
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cur_height = vc->vc_font.height;
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break;
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}
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size = (vc->vc_font.height - cur_height) * width;
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while (size--)
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tmp[i++] = 0;
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size = cur_height * width;
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while (size--)
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tmp[i++] = 0xff;
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memset(mask, 0, w * vc->vc_font.width);
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rotate_ccw(tmp, mask, vc->vc_font.width, vc->vc_font.height);
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kfree(tmp);
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}
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switch (mode) {
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case CM_ERASE:
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ops->cursor_state.enable = 0;
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break;
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case CM_DRAW:
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case CM_MOVE:
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default:
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ops->cursor_state.enable = (use_sw) ? 0 : 1;
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break;
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}
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cursor.image.data = src;
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cursor.image.fg_color = ops->cursor_state.image.fg_color;
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cursor.image.bg_color = ops->cursor_state.image.bg_color;
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cursor.image.dx = ops->cursor_state.image.dx;
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cursor.image.dy = ops->cursor_state.image.dy;
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cursor.image.height = ops->cursor_state.image.height;
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cursor.image.width = ops->cursor_state.image.width;
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cursor.hot.x = ops->cursor_state.hot.x;
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cursor.hot.y = ops->cursor_state.hot.y;
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cursor.mask = ops->cursor_state.mask;
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cursor.enable = ops->cursor_state.enable;
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cursor.image.depth = 1;
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cursor.rop = ROP_XOR;
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if (info->fbops->fb_cursor)
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err = info->fbops->fb_cursor(info, &cursor);
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if (err)
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soft_cursor(info, &cursor);
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ops->cursor_reset = 0;
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}
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int ccw_update_start(struct fb_info *info)
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{
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struct fbcon_ops *ops = info->fbcon_par;
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struct display *p = &fb_display[ops->currcon];
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u32 yoffset;
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u32 vyres = GETVYRES(p->scrollmode, info);
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int err;
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yoffset = (vyres - info->var.yres) - ops->var.xoffset;
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ops->var.xoffset = ops->var.yoffset;
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ops->var.yoffset = yoffset;
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err = fb_pan_display(info, &ops->var);
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ops->var.xoffset = info->var.xoffset;
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ops->var.yoffset = info->var.yoffset;
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ops->var.vmode = info->var.vmode;
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return err;
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}
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void fbcon_rotate_ccw(struct fbcon_ops *ops)
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{
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ops->bmove = ccw_bmove;
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ops->clear = ccw_clear;
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ops->putcs = ccw_putcs;
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ops->clear_margins = ccw_clear_margins;
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ops->cursor = ccw_cursor;
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ops->update_start = ccw_update_start;
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}
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EXPORT_SYMBOL(fbcon_rotate_ccw);
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MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
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MODULE_DESCRIPTION("Console Rotation (270 degrees) Support");
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MODULE_LICENSE("GPL");
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@ -105,6 +105,9 @@ void fbcon_set_rotate(struct fbcon_ops *ops)
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case FB_ROTATE_UD:
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fbcon_rotate_ud(ops);
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break;
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case FB_ROTATE_CCW:
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fbcon_rotate_ccw(ops);
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break;
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}
|
||||
}
|
||||
EXPORT_SYMBOL(fbcon_set_rotate);
|
||||
|
||||
@ -101,4 +101,5 @@ static inline void rotate_ccw(const char *in, char *out, u32 width, u32 height)
|
||||
|
||||
extern void fbcon_rotate_cw(struct fbcon_ops *ops);
|
||||
extern void fbcon_rotate_ud(struct fbcon_ops *ops);
|
||||
extern void fbcon_rotate_ccw(struct fbcon_ops *ops);
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user