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[PATCH] fbcon: Console Rotation - Add support to rotate the logo
Add support for rotating and positioning of the logo. Rotation and position depends on 'int rotate' parameter added to fb_prepare_logo() and fb_show_logo(). 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
e4fc27618b
commit
9c44e5f6c2
3 changed files with 122 additions and 17 deletions
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@ -499,6 +499,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
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int cols, int rows, int new_cols, int new_rows)
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{
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/* Need to make room for the logo */
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struct fbcon_ops *ops = info->fbcon_par;
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int cnt, erase = vc->vc_video_erase_char, step;
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unsigned short *save = NULL, *r, *q;
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@ -508,7 +509,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
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*/
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if (fb_get_color_depth(&info->var, &info->fix) == 1)
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erase &= ~0x400;
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logo_height = fb_prepare_logo(info);
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logo_height = fb_prepare_logo(info, ops->rotate);
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logo_lines = (logo_height + vc->vc_font.height - 1) /
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vc->vc_font.height;
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q = (unsigned short *) (vc->vc_origin +
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@ -2073,7 +2074,7 @@ static int fbcon_switch(struct vc_data *vc)
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logo_shown = fg_console;
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/* This is protected above by initmem_freed */
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fb_show_logo(info);
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fb_show_logo(info, ops->rotate);
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update_region(vc,
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vc->vc_origin + vc->vc_size_row * vc->vc_top,
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vc->vc_size_row * (vc->vc_bottom -
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@ -323,9 +323,103 @@ static struct logo_data {
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const struct linux_logo *logo;
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} fb_logo;
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int fb_prepare_logo(struct fb_info *info)
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static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height)
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{
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u32 size = width * height, i;
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out += size - 1;
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for (i = size; i--; )
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*out-- = *in++;
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}
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static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height)
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{
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int i, j, w = width - 1;
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for (i = 0; i < height; i++)
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for (j = 0; j < width; j++)
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out[height * j + w - i] = *in++;
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}
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static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height)
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{
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int i, j, w = width - 1;
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for (i = 0; i < height; i++)
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for (j = 0; j < width; j++)
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out[height * (w - j) + i] = *in++;
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}
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static void fb_rotate_logo(struct fb_info *info, u8 *dst,
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struct fb_image *image, int rotate)
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{
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u32 tmp;
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if (rotate == FB_ROTATE_UD) {
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image->dx = info->var.xres - image->width;
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image->dy = info->var.yres - image->height;
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fb_rotate_logo_ud(image->data, dst, image->width,
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image->height);
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} else if (rotate == FB_ROTATE_CW) {
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tmp = image->width;
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image->width = image->height;
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image->height = tmp;
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image->dx = info->var.xres - image->height;
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fb_rotate_logo_cw(image->data, dst, image->width,
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image->height);
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} else if (rotate == FB_ROTATE_CCW) {
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tmp = image->width;
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image->width = image->height;
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image->height = tmp;
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image->dy = info->var.yres - image->width;
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fb_rotate_logo_ccw(image->data, dst, image->width,
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image->height);
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}
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image->data = dst;
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}
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static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
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int rotate)
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{
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int x;
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if (rotate == FB_ROTATE_UR) {
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for (x = 0; x < num_online_cpus() &&
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x * (fb_logo.logo->width + 8) <=
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info->var.xres - fb_logo.logo->width; x++) {
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info->fbops->fb_imageblit(info, image);
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image->dx += fb_logo.logo->width + 8;
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}
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} else if (rotate == FB_ROTATE_UD) {
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for (x = 0; x < num_online_cpus() &&
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x * (fb_logo.logo->width + 8) <=
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info->var.xres - fb_logo.logo->width; x++) {
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info->fbops->fb_imageblit(info, image);
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image->dx -= fb_logo.logo->width + 8;
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}
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} else if (rotate == FB_ROTATE_CW) {
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for (x = 0; x < num_online_cpus() &&
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x * (fb_logo.logo->width + 8) <=
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info->var.yres - fb_logo.logo->width; x++) {
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info->fbops->fb_imageblit(info, image);
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image->dy += fb_logo.logo->width + 8;
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}
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} else if (rotate == FB_ROTATE_CCW) {
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for (x = 0; x < num_online_cpus() &&
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x * (fb_logo.logo->width + 8) <=
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info->var.yres - fb_logo.logo->width; x++) {
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info->fbops->fb_imageblit(info, image);
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image->dy -= fb_logo.logo->width + 8;
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}
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}
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}
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int fb_prepare_logo(struct fb_info *info, int rotate)
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{
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int depth = fb_get_color_depth(&info->var, &info->fix);
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int yres;
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memset(&fb_logo, 0, sizeof(struct logo_data));
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@ -358,10 +452,16 @@ int fb_prepare_logo(struct fb_info *info)
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/* Return if no suitable logo was found */
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fb_logo.logo = fb_find_logo(depth);
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if (!fb_logo.logo || fb_logo.logo->height > info->var.yres) {
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if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD)
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yres = info->var.yres;
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else
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yres = info->var.xres;
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if (fb_logo.logo && fb_logo.logo->height > yres) {
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fb_logo.logo = NULL;
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return 0;
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}
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/* What depth we asked for might be different from what we get */
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if (fb_logo.logo->type == LINUX_LOGO_CLUT224)
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fb_logo.depth = 8;
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@ -372,12 +472,11 @@ int fb_prepare_logo(struct fb_info *info)
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return fb_logo.logo->height;
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}
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int fb_show_logo(struct fb_info *info)
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int fb_show_logo(struct fb_info *info, int rotate)
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{
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u32 *palette = NULL, *saved_pseudo_palette = NULL;
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unsigned char *logo_new = NULL;
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unsigned char *logo_new = NULL, *logo_rotate = NULL;
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struct fb_image image;
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int x;
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/* Return if the frame buffer is not mapped or suspended */
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if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING)
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@ -417,25 +516,30 @@ int fb_show_logo(struct fb_info *info)
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fb_set_logo(info, fb_logo.logo, logo_new, fb_logo.depth);
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}
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image.dx = 0;
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image.dy = 0;
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image.width = fb_logo.logo->width;
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image.height = fb_logo.logo->height;
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image.dy = 0;
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for (x = 0; x < num_online_cpus() * (fb_logo.logo->width + 8) &&
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x <= info->var.xres-fb_logo.logo->width; x += (fb_logo.logo->width + 8)) {
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image.dx = x;
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info->fbops->fb_imageblit(info, &image);
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if (rotate) {
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logo_rotate = kmalloc(fb_logo.logo->width *
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fb_logo.logo->height, GFP_KERNEL);
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if (logo_rotate)
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fb_rotate_logo(info, logo_rotate, &image, rotate);
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}
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fb_do_show_logo(info, &image, rotate);
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kfree(palette);
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if (saved_pseudo_palette != NULL)
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info->pseudo_palette = saved_pseudo_palette;
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kfree(logo_new);
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kfree(logo_rotate);
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return fb_logo.logo->height;
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}
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#else
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int fb_prepare_logo(struct fb_info *info) { return 0; }
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int fb_show_logo(struct fb_info *info) { return 0; }
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int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; }
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int fb_show_logo(struct fb_info *info, int rotate) { return 0; }
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#endif /* CONFIG_LOGO */
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static int fbmem_read_proc(char *buf, char **start, off_t offset,
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@ -825,8 +825,8 @@ extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
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/* drivers/video/fbmem.c */
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extern int register_framebuffer(struct fb_info *fb_info);
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extern int unregister_framebuffer(struct fb_info *fb_info);
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extern int fb_prepare_logo(struct fb_info *fb_info);
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extern int fb_show_logo(struct fb_info *fb_info);
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extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
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extern int fb_show_logo(struct fb_info *fb_info, int rotate);
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extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
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extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
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u32 height, u32 shift_high, u32 shift_low, u32 mod);
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