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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/video/fbdev/core/fbcon_ud.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/video/fbdev/core/fbcon_ud.c')
-rw-r--r-- | drivers/video/fbdev/core/fbcon_ud.c | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/fbcon_ud.c b/drivers/video/fbdev/core/fbcon_ud.c new file mode 100644 index 0000000000..23bc045769 --- /dev/null +++ b/drivers/video/fbdev/core/fbcon_ud.c @@ -0,0 +1,438 @@ +/* + * 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, info); + u32 vxres = GETVXRES(ops->p, 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, info); + u32 vxres = GETVXRES(ops->p, 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, info); + u32 vxres = GETVXRES(ops->p, 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 color, 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 = color; + region.rop = ROP_COPY; + + if ((int) rw > 0 && !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 ((int) bh > 0) { + 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 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->state.y); + int attribute, use_sw = vc->vc_cursor_type & CUR_SW; + int err = 1, dx, dy; + char *src; + u32 vyres = GETVYRES(ops->p, info); + u32 vxres = GETVXRES(ops->p, info); + + if (!ops->fontbuffer) + return; + + cursor.set = 0; + + 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_array(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->state.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_array(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 (CUR_SIZE(ops->p->cursor_shape)) { + 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, info); + u32 vxres = GETVXRES(ops->p, 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; +} |