Re: [patch 2/4] fbdev: Add fb_append_extra_logo()

plain text document attachment (spe-logo)
Add fb_append_extra_logo(), to append extra lines of logos below the standard
Linux logo.

Signed-off-by: Geert Uytterhoeven <redacted>
Signed-off-by: Geoff Levand <redacted>
Acked-By: James Simmons <redacted>
---
 drivers/video/fbmem.c      |   50 +++++++++++++++++++++++++++++++++++++++++----
 include/linux/linux_logo.h |    8 +++++++
 2 files changed, 54 insertions(+), 4 deletions(-)

--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c

@@ -318,6 +318,13 @@ static struct logo_data {
 	const struct linux_logo *logo;
 } fb_logo __read_mostly;
 
+#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;
+
 static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height)
 {
 	u32 size = width * height, i;

@@ -411,10 +418,22 @@ static void fb_do_show_logo(struct fb_in
 	}
 }
 
+#ifdef CONFIG_FB

+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++;
+}
+#endif
+
 int fb_prepare_logo(struct fb_info *info, int rotate)
 {
 	int depth = fb_get_color_depth(&info->var, &info->fix);
-	int yres;
+	unsigned int yres, height, i;
 
 	memset(&fb_logo, 0, sizeof(struct logo_data));
 

@@ -474,7 +493,21 @@ int fb_prepare_logo(struct fb_info *info
 		fb_logo.depth = 4;
 	else
 		fb_logo.depth = 1;		
-	return fb_logo.logo->height;
+
+	/* FIXME: logo_ex supports only truecolor fb. */
+	if (info->fix.visual != FB_VISUAL_TRUECOLOR)
+		fb_logo_ex_num = 0;
+
+	height = fb_logo.logo->height;
+	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_logo_line(struct fb_info *info, int rotate,

@@ -547,8 +580,17 @@ static int fb_show_logo_line(struct fb_i
 
 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, i;
+
+	y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
+			      num_online_cpus());
+
+	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
 int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; }
--- a/include/linux/linux_logo.h
+++ b/include/linux/linux_logo.h

@@ -33,5 +33,13 @@ struct linux_logo {
 };
 
 extern const struct linux_logo *fb_find_logo(int depth);
+#if defined(CONFIG_LOGO) && defined(CONFIG_FB)