1 /*
2  * Copyright 2007 Freescale Semiconductor, Inc.
3  * York Sun <yorksun@freescale.com>
4  *
5  * FSL DIU Framebuffer driver
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
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.
14  *
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.
19  *
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,
23  * MA 02111-1307 USA
24  */
25 
26 #include <common.h>
27 #include <command.h>
28 #include <asm/io.h>
29 
30 #ifdef CONFIG_FSL_DIU_FB
31 
32 #include "../common/pixis.h"
33 #include "../common/fsl_diu_fb.h"
34 
35 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
36 #include <devices.h>
37 #include <video_fb.h>
38 #endif
39 
40 extern unsigned int FSL_Logo_BMP[];
41 
42 static int xres, yres;
43 
44 void diu_set_pixel_clock(unsigned int pixclock)
45 {
46 	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
47 	volatile ccsr_gur_t *gur = &immap->im_gur;
48 	volatile unsigned int *guts_clkdvdr = &gur->clkdvdr;
49 	unsigned long speed_ccb, temp, pixval;
50 
51 	speed_ccb = get_bus_freq(0);
52 	temp = 1000000000/pixclock;
53 	temp *= 1000;
54 	pixval = speed_ccb / temp;
55 	debug("DIU pixval = %lu\n", pixval);
56 
57 	/* Modify PXCLK in GUTS CLKDVDR */
58 	debug("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
59 	temp = *guts_clkdvdr & 0x2000FFFF;
60 	*guts_clkdvdr = temp;				/* turn off clock */
61 	*guts_clkdvdr = temp | 0x80000000 | ((pixval & 0x1F) << 16);
62 	debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
63 }
64 
65 void mpc8610hpcd_diu_init(void)
66 {
67 	char *monitor_port;
68 	int gamma_fix;
69 	unsigned int pixel_format;
70 	unsigned char tmp_val;
71 	unsigned char pixis_arch;
72 
73 	tmp_val = in8(PIXIS_BASE + PIXIS_BRDCFG0);
74 	pixis_arch = in8(PIXIS_BASE + PIXIS_VER);
75 
76 	monitor_port = getenv("monitor");
77 	if (!strncmp(monitor_port, "0", 1)) {	/* 0 - DVI */
78 		xres = 1280;
79 		yres = 1024;
80 		if (pixis_arch == 0x01)
81 			pixel_format = 0x88882317;
82 		else
83 			pixel_format = 0x88883316;
84 		gamma_fix = 0;
85 		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
86 
87 	} else if (!strncmp(monitor_port, "1", 1)) { /* 1 - Single link LVDS */
88 		xres = 1024;
89 		yres = 768;
90 		pixel_format = 0x88883316;
91 		gamma_fix = 0;
92 		out8(PIXIS_BASE + PIXIS_BRDCFG0, (tmp_val & 0xf7) | 0x10);
93 
94 	} else if (!strncmp(monitor_port, "2", 1)) { /* 2 - Double link LVDS */
95 		xres = 1280;
96 		yres = 1024;
97 		pixel_format = 0x88883316;
98 		gamma_fix = 1;
99 		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val & 0xe7);
100 
101 	} else {	/* DVI */
102 		xres = 1280;
103 		yres = 1024;
104 		pixel_format = 0x88882317;
105 		gamma_fix = 0;
106 		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
107 	}
108 
109 	fsl_diu_init(xres, pixel_format, gamma_fix,
110 		     (unsigned char *)FSL_Logo_BMP);
111 }
112 
113 int mpc8610diu_init_show_bmp(cmd_tbl_t *cmdtp,
114 			     int flag, int argc, char *argv[])
115 {
116 	unsigned int addr;
117 
118 	if (argc < 2) {
119 		cmd_usage(cmdtp);
120 		return 1;
121 	}
122 
123 	if (!strncmp(argv[1],"init",4)) {
124 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
125 		fsl_diu_clear_screen();
126 		drv_video_init();
127 #else
128 		mpc8610hpcd_diu_init();
129 #endif
130 	} else {
131 		addr = simple_strtoul(argv[1], NULL, 16);
132 		fsl_diu_clear_screen();
133 		fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
134 	}
135 
136 	return 0;
137 }
138 
139 U_BOOT_CMD(
140 	diufb, CONFIG_SYS_MAXARGS, 1, mpc8610diu_init_show_bmp,
141 	"Init or Display BMP file",
142 	"init\n    - initialize DIU\n"
143 	"addr\n    - display bmp at address 'addr'"
144 );
145 
146 
147 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
148 
149 /*
150  * The Graphic Device
151  */
152 GraphicDevice ctfb;
153 void *video_hw_init(void)
154 {
155 	GraphicDevice *pGD = (GraphicDevice *) &ctfb;
156 	struct fb_info *info;
157 
158 	mpc8610hpcd_diu_init();
159 
160 	/* fill in Graphic device struct */
161 	sprintf(pGD->modeIdent,
162 		"%dx%dx%d %ldkHz %ldHz",
163 		xres, yres, 32, 64, 60);
164 
165 	pGD->frameAdrs = (unsigned int)fsl_fb_open(&info);
166 	pGD->winSizeX = xres;
167 	pGD->winSizeY = yres - info->logo_height;
168 	pGD->plnSizeX = pGD->winSizeX;
169 	pGD->plnSizeY = pGD->winSizeY;
170 
171 	pGD->gdfBytesPP = 4;
172 	pGD->gdfIndex = GDF_32BIT_X888RGB;
173 
174 	pGD->isaBase = 0;
175 	pGD->pciBase = 0;
176 	pGD->memSize = info->screen_size - info->logo_size;
177 
178 	/* Cursor Start Address */
179 	pGD->dprBase = 0;
180 	pGD->vprBase = 0;
181 	pGD->cprBase = 0;
182 
183 	return (void *)pGD;
184 }
185 
186 void video_set_lut (unsigned int index,	/* color number */
187 		    unsigned char r,	/* red */
188 		    unsigned char g,	/* green */
189 		    unsigned char b	/* blue */
190 		    )
191 {
192 	return;
193 }
194 
195 #endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */
196 
197 #endif /* CONFIG_FSL_DIU_FB */
198