3 * Matthias Weisser <weisserm@arcor.de>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * mb86r0xgdc.c - Graphic interface for Fujitsu MB86R0x integrated graphic
33 #include <asm/arch/hardware.h>
35 #include "videomodes.h"
38 * 4MB (at the end of system RAM)
40 #define VIDEO_MEM_SIZE 0x400000
42 #define FB_SYNC_CLK_INV (1<<16) /* pixel clock inverted */
47 static GraphicDevice mb86r0x;
49 static void dsp_init(struct mb86r0x_gdc_dsp *dsp, char *modestr,
52 struct ctfb_res_modes var_mode;
54 u16 htp, hdp, hdb, hsp, vtr, vsp, vdp;
56 u32 l2m, l2em, l2oa0, l2da0, l2oa1, l2da1;
57 u16 l2dx, l2dy, l2wx, l2wy, l2ww, l2wh;
61 bpp = video_get_params(&var_mode, modestr);
66 var_mode.pixclock = 39721; /* 25MHz */
67 var_mode.left_margin = 48;
68 var_mode.right_margin = 16;
69 var_mode.upper_margin = 33;
70 var_mode.lower_margin = 10;
71 var_mode.hsync_len = 96;
72 var_mode.vsync_len = 2;
78 /* Fill memory with white */
79 memset(videomem, 0xFF, var_mode.xres * var_mode.yres * 2);
81 mb86r0x.winSizeX = var_mode.xres;
82 mb86r0x.winSizeY = var_mode.yres;
84 /* LCD base clock is ~ 660MHZ. We do calculations in kHz */
85 div = 660000 / (1000000000L / var_mode.pixclock);
91 dcm1 = (div - 1) << 8;
93 if (var_mode.sync & FB_SYNC_CLK_INV)
98 htp = var_mode.left_margin + var_mode.xres +
99 var_mode.hsync_len + var_mode.right_margin;
102 hsp = var_mode.xres + var_mode.right_margin;
103 hsw = var_mode.hsync_len;
105 vsw = var_mode.vsync_len;
106 vtr = var_mode.upper_margin + var_mode.yres +
107 var_mode.vsync_len + var_mode.lower_margin;
108 vsp = var_mode.yres + var_mode.lower_margin;
111 l2m = ((var_mode.yres - 1) << (0)) |
112 (((var_mode.xres * 2) / 64) << (16)) |
115 l2em = (1 << 0) | (1 << 1);
117 l2oa0 = mb86r0x.frameAdrs;
118 l2da0 = mb86r0x.frameAdrs;
119 l2oa1 = mb86r0x.frameAdrs;
120 l2da1 = mb86r0x.frameAdrs;
125 l2ww = var_mode.xres;
126 l2wh = var_mode.yres - 1;
128 writel(dcm1, &dsp->dcm1);
129 writel(dcm2, &dsp->dcm2);
130 writel(dcm3, &dsp->dcm3);
132 writew(htp, &dsp->htp);
133 writew(hdp, &dsp->hdp);
134 writew(hdb, &dsp->hdb);
135 writew(hsp, &dsp->hsp);
136 writeb(hsw, &dsp->hsw);
138 writeb(vsw, &dsp->vsw);
139 writew(vtr, &dsp->vtr);
140 writew(vsp, &dsp->vsp);
141 writew(vdp, &dsp->vdp);
143 writel(l2m, &dsp->l2m);
144 writel(l2em, &dsp->l2em);
145 writel(l2oa0, &dsp->l2oa0);
146 writel(l2da0, &dsp->l2da0);
147 writel(l2oa1, &dsp->l2oa1);
148 writel(l2da1, &dsp->l2da1);
149 writew(l2dx, &dsp->l2dx);
150 writew(l2dy, &dsp->l2dy);
151 writew(l2wx, &dsp->l2wx);
152 writew(l2wy, &dsp->l2wy);
153 writew(l2ww, &dsp->l2ww);
154 writew(l2wh, &dsp->l2wh);
156 writel(dcm1 | (1 << 18) | (1 << 31), &dsp->dcm1);
159 void *video_hw_init(void)
161 struct mb86r0x_gdc *gdc = (struct mb86r0x_gdc *) MB86R0x_GDC_BASE;
162 GraphicDevice *pGD = &mb86r0x;
166 memset(pGD, 0, sizeof(GraphicDevice));
168 pGD->gdfIndex = GDF_15BIT_555RGB;
170 pGD->memSize = VIDEO_MEM_SIZE;
171 pGD->frameAdrs = PHYS_SDRAM + PHYS_SDRAM_SIZE - VIDEO_MEM_SIZE;
173 vid = (u32 *)pGD->frameAdrs;
175 s = getenv("videomode");
177 dsp_init(&gdc->dsp0, s, vid);
179 s = getenv("videomode1");
181 dsp_init(&gdc->dsp1, s, vid);