2 * Copyright 2008 Freescale Semiconductor, Inc.
3 * York Sun <yorksun@freescale.com>
5 * FSL DIU Framebuffer driver
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #include "../../../../board/freescale/common/fsl_diu_fb.h"
32 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
33 #include <stdio_dev.h>
37 DECLARE_GLOBAL_DATA_PTR;
39 #ifdef CONFIG_FSL_DIU_LOGO_BMP
40 extern unsigned int FSL_Logo_BMP[];
42 #define FSL_Logo_BMP NULL
45 static int xres, yres;
47 void diu_set_pixel_clock(unsigned int pixclock)
49 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
50 volatile clk512x_t *clk = &immap->clk;
51 volatile unsigned int *clkdvdr = &clk->scfr[0];
52 unsigned long speed_ccb, temp, pixval;
54 speed_ccb = get_bus_freq(0) * 4;
55 temp = 1000000000/pixclock;
57 pixval = speed_ccb / temp;
58 debug("DIU pixval = %lu\n", pixval);
60 /* Modify PXCLK in GUTS CLKDVDR */
61 debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
62 temp = in_be32(clkdvdr) & 0xFFFFFF00;
63 out_be32(clkdvdr, temp | (pixval & 0xFF));
64 debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
67 char *valid_bmp(char *addr)
72 h_addr = simple_strtoul(addr, NULL, 16);
73 if (h_addr < bd->bi_flashstart ||
74 h_addr >= (bd->bi_flashstart + bd->bi_flashsize - 1)) {
75 printf("bmp addr %lx is not a valid flash address\n", h_addr);
77 } else if ((*(char *)(h_addr) != 'B') || (*(char *)(h_addr+1) != 'M')) {
78 printf("bmp addr is not a bmp\n");
81 return (char *)h_addr;
84 int mpc5121_diu_init(void)
86 unsigned int pixel_format;
90 #if defined(CONFIG_VIDEO_XRES) & defined(CONFIG_VIDEO_YRES)
91 xres = CONFIG_VIDEO_XRES;
92 yres = CONFIG_VIDEO_YRES;
97 pixel_format = 0x88883316;
99 debug("mpc5121_diu_init\n");
100 bmp_env = getenv("diu_bmp_addr");
102 bmp = valid_bmp(bmp_env);
105 bmp = (char *)FSL_Logo_BMP;
106 return fsl_diu_init(xres, pixel_format, 0, (unsigned char *)bmp);
109 int mpc5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
110 int flag, int argc, char *argv[])
119 if (!strncmp(argv[1], "init", 4)) {
120 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
121 fsl_diu_clear_screen();
124 return mpc5121_diu_init();
127 addr = simple_strtoul(argv[1], NULL, 16);
128 fsl_diu_clear_screen();
129 fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
136 diufb, CONFIG_SYS_MAXARGS, 1, mpc5121diu_init_show_bmp,
137 "Init or Display BMP file",
138 "init\n - initialize DIU\n"
139 "addr\n - display bmp at address 'addr'"
143 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
149 void *video_hw_init(void)
151 GraphicDevice *pGD = (GraphicDevice *) &ctfb;
152 struct fb_info *info;
154 if (mpc5121_diu_init() < 0)
157 /* fill in Graphic device struct */
158 sprintf(pGD->modeIdent, "%dx%dx%d %dkHz %dHz",
159 xres, yres, 32, 64, 60);
161 pGD->frameAdrs = (unsigned int)fsl_fb_open(&info);
162 pGD->winSizeX = xres;
163 pGD->winSizeY = yres - info->logo_height;
164 pGD->plnSizeX = pGD->winSizeX;
165 pGD->plnSizeY = pGD->winSizeY;
168 pGD->gdfIndex = GDF_32BIT_X888RGB;
172 pGD->memSize = info->screen_size - info->logo_size;
174 /* Cursor Start Address */
182 #endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */