Commit 9c44e5f6 authored by Antonino A. Daplas's avatar Antonino A. Daplas Committed by Linus Torvalds
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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: default avatarAntonino Daplas <adaplas@pol.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent e4fc2761

drivers/video/console/fbcon.c

+3 −2
Original line number Diff line number Diff line
@@ -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 -

drivers/video/fbmem.c

+117 −13
Original line number Diff line number Diff line
@@ -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,

include/linux/fb.h

+2 −2
Original line number Diff line number Diff line
@@ -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);