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/* -*- pse-c -*-
*-----------------------------------------------------------------------------
* Filename: splash_screen.c
* $Revision: 1.2 $
*-----------------------------------------------------------------------------
* Copyright © 2002-2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*-----------------------------------------------------------------------------
* Description:
* This is the Intel Embedded Graphics EFI Driver Splash Screen implementation
* file. This code shows a splash screen with a customizable icon.
*-----------------------------------------------------------------------------
*/
#define MODULE_NAME hal.oal
#include <drm/drmP.h>
#include <drm/drm.h>
#include "splash_screen.h"
#include "bitmap_data.h"
/**
* Function to display a splash screen to the user. The splash screen must be
* accessible to the kernel mode driver as it has to be displayed immediately
* after setting the mode (if requested by the user through config options).
*
* @param ss_data (IN) a non null pointer to splash screen information like
* width, height etc.
*
* @return 0 on Success
* @return <0 on Error
*/
void display_splash_screen(
igd_framebuffer_info_t *fb_info,
unsigned char *fb,
emgd_drm_splash_screen_t *ss_data)
{
unsigned char *fb_addr, *icon_temp;
unsigned long *fb_addr_long, icon_long;
unsigned long bitmap_pitch;
short x, y;
unsigned long init_x_shift, init_y_shift;
unsigned long row, col, fb_index;
unsigned long bytecount, temp;
x = (short) ss_data->x;
y = (short) ss_data->y;
if(x < 0) {
init_x_shift = (fb_info->width + x) * 4;
init_y_shift = (fb_info->height + y) * fb_info->screen_pitch;
} else {
init_x_shift = x * 4;
init_y_shift = y * fb_info->screen_pitch;
}
fb_addr = fb + init_y_shift;
bytecount = (unsigned long) bitmap_data[0];
bitmap_pitch = ss_data->width * bytecount;
for(row = 0; row < ss_data->height; row++) {
fb_addr_long =
(unsigned long *) &fb_addr[fb_info->screen_pitch * row +
init_x_shift];
/*
* We are adding 2 bytes here, because the first byte is the bytecount
* and the second byte is the palette count
*/
icon_temp = &bitmap_data[2 + (row * bitmap_pitch)];
fb_index = 0;
for(col = 0; col < ss_data->width; col++) {
icon_long = *((unsigned long *) &icon_temp[col*bytecount]);
switch(bytecount) {
case 1:
/* 8 bit */
temp = (icon_long & 0xFF);
icon_long = ((temp & 0xE0)<<16) | ((temp & 0x1C)<<11) |
((temp & 0x3)<<6);
break;
case 2:
/* 16 bit */
temp = (icon_long & 0xFFFF);
icon_long = CONV_16_TO_32_BIT(temp);
break;
}
/*
* For 24 bit we don't really have to do anything as it is already in
* RGB 888 format
*/
fb_addr_long[fb_index++] = icon_long & 0x00FFFFFF;
}
}
}
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