From 9c44e5f6c211a9b7313ded897f3135ef7d9ad3e2 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Tue, 8 Nov 2005 21:39:10 -0800 Subject: [PATCH] [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/console/fbcon.c | 5 +- drivers/video/fbmem.c | 130 ++++++++++++++++++++++++++++++---- include/linux/fb.h | 4 +- 3 files changed, 122 insertions(+), 17 deletions(-) diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index b5d678c7325..26935e231a1 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -499,6 +499,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, int cols, int rows, int new_cols, int new_rows) { /* Need to make room for the logo */ + struct fbcon_ops *ops = info->fbcon_par; int cnt, erase = vc->vc_video_erase_char, step; unsigned short *save = NULL, *r, *q; @@ -508,7 +509,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, */ if (fb_get_color_depth(&info->var, &info->fix) == 1) erase &= ~0x400; - logo_height = fb_prepare_logo(info); + logo_height = fb_prepare_logo(info, ops->rotate); logo_lines = (logo_height + vc->vc_font.height - 1) / vc->vc_font.height; q = (unsigned short *) (vc->vc_origin + @@ -2073,7 +2074,7 @@ static int fbcon_switch(struct vc_data *vc) logo_shown = fg_console; /* This is protected above by initmem_freed */ - fb_show_logo(info); + fb_show_logo(info, ops->rotate); update_region(vc, vc->vc_origin + vc->vc_size_row * vc->vc_top, vc->vc_size_row * (vc->vc_bottom - diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index e2667ddab3f..7a2a8fa50b3 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -323,9 +323,103 @@ static struct logo_data { const struct linux_logo *logo; } fb_logo; -int fb_prepare_logo(struct fb_info *info) +static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height) +{ + u32 size = width * height, i; + + out += size - 1; + + for (i = size; i--; ) + *out-- = *in++; +} + +static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, w = width - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * j + w - i] = *in++; +} + +static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height) +{ + int i, j, w = width - 1; + + for (i = 0; i < height; i++) + for (j = 0; j < width; j++) + out[height * (w - j) + i] = *in++; +} + +static void fb_rotate_logo(struct fb_info *info, u8 *dst, + struct fb_image *image, int rotate) +{ + u32 tmp; + + if (rotate == FB_ROTATE_UD) { + image->dx = info->var.xres - image->width; + image->dy = info->var.yres - image->height; + fb_rotate_logo_ud(image->data, dst, image->width, + image->height); + } else if (rotate == FB_ROTATE_CW) { + tmp = image->width; + image->width = image->height; + image->height = tmp; + image->dx = info->var.xres - image->height; + fb_rotate_logo_cw(image->data, dst, image->width, + image->height); + } else if (rotate == FB_ROTATE_CCW) { + tmp = image->width; + image->width = image->height; + image->height = tmp; + image->dy = info->var.yres - image->width; + fb_rotate_logo_ccw(image->data, dst, image->width, + image->height); + } + + image->data = dst; +} + +static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, + int rotate) +{ + int x; + + if (rotate == FB_ROTATE_UR) { + for (x = 0; x < num_online_cpus() && + x * (fb_logo.logo->width + 8) <= + info->var.xres - fb_logo.logo->width; x++) { + info->fbops->fb_imageblit(info, image); + image->dx += fb_logo.logo->width + 8; + } + } else if (rotate == FB_ROTATE_UD) { + for (x = 0; x < num_online_cpus() && + x * (fb_logo.logo->width + 8) <= + info->var.xres - fb_logo.logo->width; x++) { + info->fbops->fb_imageblit(info, image); + image->dx -= fb_logo.logo->width + 8; + } + } else if (rotate == FB_ROTATE_CW) { + for (x = 0; x < num_online_cpus() && + x * (fb_logo.logo->width + 8) <= + info->var.yres - fb_logo.logo->width; x++) { + info->fbops->fb_imageblit(info, image); + image->dy += fb_logo.logo->width + 8; + } + } else if (rotate == FB_ROTATE_CCW) { + for (x = 0; x < num_online_cpus() && + x * (fb_logo.logo->width + 8) <= + info->var.yres - fb_logo.logo->width; x++) { + info->fbops->fb_imageblit(info, image); + image->dy -= fb_logo.logo->width + 8; + } + } +} + +int fb_prepare_logo(struct fb_info *info, int rotate) { int depth = fb_get_color_depth(&info->var, &info->fix); + int yres; memset(&fb_logo, 0, sizeof(struct logo_data)); @@ -358,10 +452,16 @@ int fb_prepare_logo(struct fb_info *info) /* Return if no suitable logo was found */ fb_logo.logo = fb_find_logo(depth); - if (!fb_logo.logo || fb_logo.logo->height > info->var.yres) { + if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD) + yres = info->var.yres; + else + yres = info->var.xres; + + if (fb_logo.logo && fb_logo.logo->height > yres) { fb_logo.logo = NULL; return 0; } + /* What depth we asked for might be different from what we get */ if (fb_logo.logo->type == LINUX_LOGO_CLUT224) fb_logo.depth = 8; @@ -372,12 +472,11 @@ int fb_prepare_logo(struct fb_info *info) return fb_logo.logo->height; } -int fb_show_logo(struct fb_info *info) +int fb_show_logo(struct fb_info *info, int rotate) { u32 *palette = NULL, *saved_pseudo_palette = NULL; - unsigned char *logo_new = NULL; + unsigned char *logo_new = NULL, *logo_rotate = NULL; struct fb_image image; - int x; /* Return if the frame buffer is not mapped or suspended */ if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING) @@ -417,25 +516,30 @@ int fb_show_logo(struct fb_info *info) fb_set_logo(info, fb_logo.logo, logo_new, fb_logo.depth); } + image.dx = 0; + image.dy = 0; image.width = fb_logo.logo->width; image.height = fb_logo.logo->height; - image.dy = 0; - for (x = 0; x < num_online_cpus() * (fb_logo.logo->width + 8) && - x <= info->var.xres-fb_logo.logo->width; x += (fb_logo.logo->width + 8)) { - image.dx = x; - info->fbops->fb_imageblit(info, &image); + if (rotate) { + logo_rotate = kmalloc(fb_logo.logo->width * + fb_logo.logo->height, GFP_KERNEL); + if (logo_rotate) + fb_rotate_logo(info, logo_rotate, &image, rotate); } - + + fb_do_show_logo(info, &image, rotate); + kfree(palette); if (saved_pseudo_palette != NULL) info->pseudo_palette = saved_pseudo_palette; kfree(logo_new); + kfree(logo_rotate); return fb_logo.logo->height; } #else -int fb_prepare_logo(struct fb_info *info) { return 0; } -int fb_show_logo(struct fb_info *info) { return 0; } +int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; } +int fb_show_logo(struct fb_info *info, int rotate) { return 0; } #endif /* CONFIG_LOGO */ static int fbmem_read_proc(char *buf, char **start, off_t offset, diff --git a/include/linux/fb.h b/include/linux/fb.h index 51791dc5d4d..357dd3a0a01 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -825,8 +825,8 @@ extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); /* drivers/video/fbmem.c */ extern int register_framebuffer(struct fb_info *fb_info); extern int unregister_framebuffer(struct fb_info *fb_info); -extern int fb_prepare_logo(struct fb_info *fb_info); -extern int fb_show_logo(struct fb_info *fb_info); +extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); +extern int fb_show_logo(struct fb_info *fb_info, int rotate); extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height, u32 shift_high, u32 shift_low, u32 mod); -- 2.20.1