1 /* drivers/video/msm/logo.c
3 * Show Logo in RLE 565 format
5 * Copyright (C) 2008 Google Incorporated
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
17 #include <linux/module.h>
18 #include <linux/types.h>
20 #include <linux/vt_kern.h>
21 #include <linux/unistd.h>
22 #include <linux/syscalls.h>
24 #include <linux/irq.h>
25 #include <asm/system.h>
27 #define fb_width(fb) ((fb)->var.xres)
28 #define fb_height(fb) ((fb)->var.yres)
29 #define fb_size(fb) ((fb)->var.xres * (fb)->var.yres * 2)
31 static void memset16(void *_ptr, unsigned short val, unsigned count)
33 unsigned short *ptr = _ptr;
39 /* 565RLE image format: [count(2 bytes), rle(2 bytes)] */
40 int load_565rle_image(char *filename)
45 unsigned short *data, *bits, *ptr;
47 info = registered_fb[0];
49 printk(KERN_WARNING "%s: Can not access framebuffer\n",
54 fd = sys_open(filename, O_RDONLY, 0);
56 printk(KERN_WARNING "%s: Can not open %s\n",
60 count = (unsigned)sys_lseek(fd, (off_t)0, 2);
64 goto err_logo_close_file;
66 sys_lseek(fd, (off_t)0, 0);
67 data = kmalloc(count, GFP_KERNEL);
69 printk(KERN_WARNING "%s: Can not alloc data\n", __func__);
71 goto err_logo_close_file;
73 if ((unsigned)sys_read(fd, (char *)data, count) != count) {
75 goto err_logo_free_data;
78 max = fb_width(info) * fb_height(info);
80 bits = (unsigned short *)(info->screen_base);
85 memset16(bits, ptr[1], n << 1);
98 EXPORT_SYMBOL(load_565rle_image);