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fbdev: Add fb_append_extra_logo()
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Add fb_append_extra_logo(), to append extra lines of logos below the standard
Linux logo.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-By: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Geert Uytterhoeven authored and Linus Torvalds committed Jul 17, 2007
1 parent 90da63e commit 9900abf
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Showing 3 changed files with 155 additions and 69 deletions.
212 changes: 143 additions & 69 deletions drivers/video/fbmem.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -404,72 +404,6 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
}
}

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));

if (info->flags & FBINFO_MISC_TILEBLITTING ||
info->flags & FBINFO_MODULE)
return 0;

if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
depth = info->var.blue.length;
if (info->var.red.length < depth)
depth = info->var.red.length;
if (info->var.green.length < depth)
depth = info->var.green.length;
}

if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) {
/* assume console colormap */
depth = 4;
}

if (depth >= 8) {
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
fb_logo.needs_truepalette = 1;
break;
case FB_VISUAL_DIRECTCOLOR:
fb_logo.needs_directpalette = 1;
fb_logo.needs_cmapreset = 1;
break;
case FB_VISUAL_PSEUDOCOLOR:
fb_logo.needs_cmapreset = 1;
break;
}
}

/* Return if no suitable logo was found */
fb_logo.logo = fb_find_logo(depth);

if (!fb_logo.logo) {
return 0;
}

if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD)
yres = info->var.yres;
else
yres = info->var.xres;

if (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;
else if (fb_logo.logo->type == LINUX_LOGO_VGA16)
fb_logo.depth = 4;
else
fb_logo.depth = 1;
return fb_logo.logo->height;
}

static int fb_show_logo_line(struct fb_info *info, int rotate,
const struct linux_logo *logo, int y,
unsigned int n)
Expand All @@ -489,7 +423,7 @@ static int fb_show_logo_line(struct fb_info *info, int rotate,
if (fb_logo.needs_cmapreset)
fb_set_logocmap(info, logo);

if (fb_logo.needs_truepalette ||
if (fb_logo.needs_truepalette ||
fb_logo.needs_directpalette) {
palette = kmalloc(256 * 4, GFP_KERNEL);
if (palette == NULL)
Expand Down Expand Up @@ -538,10 +472,150 @@ static int fb_show_logo_line(struct fb_info *info, int rotate,
return logo->height;
}


#ifdef CONFIG_FB_LOGO_EXTRA

#define FB_LOGO_EX_NUM_MAX 10
static struct logo_data_extra {
const struct linux_logo *logo;
unsigned int n;
} fb_logo_ex[FB_LOGO_EX_NUM_MAX];
static unsigned int fb_logo_ex_num;

void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n)
{
if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX)
return;

fb_logo_ex[fb_logo_ex_num].logo = logo;
fb_logo_ex[fb_logo_ex_num].n = n;
fb_logo_ex_num++;
}

static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height,
unsigned int yres)
{
unsigned int i;

/* FIXME: logo_ex supports only truecolor fb. */
if (info->fix.visual != FB_VISUAL_TRUECOLOR)
fb_logo_ex_num = 0;

for (i = 0; i < fb_logo_ex_num; i++) {
height += fb_logo_ex[i].logo->height;
if (height > yres) {
height -= fb_logo_ex[i].logo->height;
fb_logo_ex_num = i;
break;
}
}
return height;
}

static int fb_show_extra_logos(struct fb_info *info, int y, int rotate)
{
unsigned int i;

for (i = 0; i < fb_logo_ex_num; i++)
y += fb_show_logo_line(info, rotate,
fb_logo_ex[i].logo, y, fb_logo_ex[i].n);

return y;
}

#else /* !CONFIG_FB_LOGO_EXTRA */

static inline int fb_prepare_extra_logos(struct fb_info *info,
unsigned int height,
unsigned int yres)
{
return height;
}

static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate)
{
return y;
}

#endif /* CONFIG_FB_LOGO_EXTRA */


int fb_prepare_logo(struct fb_info *info, int rotate)
{
int depth = fb_get_color_depth(&info->var, &info->fix);
unsigned int yres;

memset(&fb_logo, 0, sizeof(struct logo_data));

if (info->flags & FBINFO_MISC_TILEBLITTING ||
info->flags & FBINFO_MODULE)
return 0;

if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
depth = info->var.blue.length;
if (info->var.red.length < depth)
depth = info->var.red.length;
if (info->var.green.length < depth)
depth = info->var.green.length;
}

if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) {
/* assume console colormap */
depth = 4;
}

if (depth >= 8) {
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
fb_logo.needs_truepalette = 1;
break;
case FB_VISUAL_DIRECTCOLOR:
fb_logo.needs_directpalette = 1;
fb_logo.needs_cmapreset = 1;
break;
case FB_VISUAL_PSEUDOCOLOR:
fb_logo.needs_cmapreset = 1;
break;
}
}

/* Return if no suitable logo was found */
fb_logo.logo = fb_find_logo(depth);

if (!fb_logo.logo) {
return 0;
}

if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD)
yres = info->var.yres;
else
yres = info->var.xres;

if (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;
else if (fb_logo.logo->type == LINUX_LOGO_VGA16)
fb_logo.depth = 4;
else
fb_logo.depth = 1;

return fb_prepare_extra_logos(info, fb_logo.logo->height, yres);
}

int fb_show_logo(struct fb_info *info, int rotate)
{
return fb_show_logo_line(info, rotate, fb_logo.logo, 0,
num_online_cpus());
int y;

y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
num_online_cpus());
y = fb_show_extra_logos(info, y, rotate);

return y;
}
#else
int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; }
Expand Down
4 changes: 4 additions & 0 deletions drivers/video/logo/Kconfig
View file
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,10 @@ menuconfig LOGO

if LOGO

config FB_LOGO_EXTRA
bool
depends on FB

config LOGO_LINUX_MONO
bool "Standard black and white Linux logo"
default y
Expand Down
8 changes: 8 additions & 0 deletions include/linux/linux_logo.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -33,5 +33,13 @@ struct linux_logo {
};

extern const struct linux_logo *fb_find_logo(int depth);
#ifdef CONFIG_FB_LOGO_EXTRA
extern void fb_append_extra_logo(const struct linux_logo *logo,
unsigned int n);
#else
static inline void fb_append_extra_logo(const struct linux_logo *logo,
unsigned int n)
{}
#endif

#endif /* _LINUX_LINUX_LOGO_H */

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