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394 lines
10 KiB
394 lines
10 KiB
/* |
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* linux/drivers/video/console/fbcon_ud.c -- Software Rotation - 90 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/module.h> |
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#include <linux/slab.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 90 degrees |
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*/ |
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static void cw_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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u8 c, msk = ~(0xff >> offset); |
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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 && !j) |
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c |= msk; |
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if (attribute & FBCON_ATTRIBUTE_BOLD && i) |
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c |= *(src-width); |
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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 cw_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 fbcon_ops *ops = info->fbcon_par; |
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struct fb_copyarea area; |
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u32 vxres = GETVXRES(ops->p->scrollmode, info); |
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area.sx = vxres - ((sy + height) * vc->vc_font.height); |
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area.sy = sx * vc->vc_font.width; |
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area.dx = vxres - ((dy + height) * vc->vc_font.height); |
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area.dy = dx * 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 cw_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 fbcon_ops *ops = info->fbcon_par; |
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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 vxres = GETVXRES(ops->p->scrollmode, info); |
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region.color = attr_bgcol_ec(bgshift,vc,info); |
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region.dx = vxres - ((sy + height) * vc->vc_font.height); |
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region.dy = sx * 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 cw_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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cw_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 cw_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 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 vxres = GETVXRES(ops->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 = vxres - ((yy + 1) * vc->vc_font.height); |
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image.dy = xx * 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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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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cw_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 cw_clear_margins(struct vc_data *vc, struct fb_info *info, |
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int color, 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 rs = info->var.yres - rw; |
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struct fb_fillrect region; |
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region.color = color; |
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region.rop = ROP_COPY; |
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if ((int) rw > 0 && !bottom_only) { |
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region.dx = 0; |
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region.dy = info->var.yoffset + rs; |
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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 ((int) bh > 0) { |
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region.dx = info->var.xoffset; |
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region.dy = info->var.yoffset; |
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region.height = info->var.yres; |
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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 cw_cursor(struct vc_data *vc, struct fb_info *info, int mode, |
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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 = 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(ops->p, vc->state.y); |
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int attribute, use_sw = vc->vc_cursor_type & CUR_SW; |
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int err = 1, dx, dy; |
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char *src; |
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u32 vxres = GETVXRES(ops->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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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_array(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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cw_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 = vxres - ((y * vc->vc_font.height) + vc->vc_font.height); |
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dy = vc->state.x * 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 != ops->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_array(w, vc->vc_font.width, |
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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_array(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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ops->p->cursor_shape = vc->vc_cursor_type; |
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cursor.set |= FB_CUR_SETSHAPE; |
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switch (CUR_SIZE(ops->p->cursor_shape)) { |
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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_cw(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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static int cw_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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u32 vxres = GETVXRES(ops->p->scrollmode, info); |
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u32 xoffset; |
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int err; |
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xoffset = vxres - (info->var.xres + ops->var.yoffset); |
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ops->var.yoffset = ops->var.xoffset; |
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ops->var.xoffset = xoffset; |
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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_cw(struct fbcon_ops *ops) |
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{ |
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ops->bmove = cw_bmove; |
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ops->clear = cw_clear; |
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ops->putcs = cw_putcs; |
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ops->clear_margins = cw_clear_margins; |
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ops->cursor = cw_cursor; |
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ops->update_start = cw_update_start; |
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}
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