2 * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
4 * (C) 1999 Mihai Spatar
5 * (C) 2000 YAEGASHI Takeshi
6 * (C) 2003, 2004 Paul Mundt
7 * (C) 2003, 2004 Andriy Skulysh
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive for
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/errno.h>
18 #include <linux/string.h>
20 #include <linux/slab.h>
21 #include <linux/delay.h>
22 #include <linux/init.h>
25 #include <asm/machvec.h>
26 #include <asm/uaccess.h>
27 #include <asm/pgtable.h>
29 #include <asm/hd64461/hd64461.h>
31 #include <asm/cpu/dac.h>
32 #include <asm/hp6xx/hp6xx.h>
36 static struct fb_var_screeninfo hitfb_var __initdata = {
37 .activate = FB_ACTIVATE_NOW,
40 .vmode = FB_VMODE_NONINTERLACED,
43 static struct fb_fix_screeninfo hitfb_fix __initdata = {
44 .id = "Hitachi HD64461",
45 .type = FB_TYPE_PACKED_PIXELS,
47 .accel = FB_ACCEL_NONE,
50 static u32 pseudo_palette[16];
51 static struct fb_info fb_info;
53 static inline void hitfb_accel_wait(void)
55 while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
58 static inline void hitfb_accel_start(int truecolor)
61 fb_writew(6, HD64461_GRCFGR);
63 fb_writew(7, HD64461_GRCFGR);
67 static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
68 u16 width, u16 height)
70 u32 saddr = WIDTH * dy + dx;
74 fb_writew(width, HD64461_BBTDWR);
75 fb_writew(height, HD64461_BBTDHR);
77 fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
78 fb_writew(saddr >> 16, HD64461_BBTDSARH);
82 static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
83 u16 width, u16 height, u16 color)
85 hitfb_accel_set_dest(truecolor, dx, dy, width, height);
87 fb_writew(0x00f0, HD64461_BBTROPR);
88 fb_writew(16, HD64461_BBTMDR);
89 fb_writew(color, HD64461_GRSCR);
91 hitfb_accel_start(truecolor);
94 static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
95 u16 dy, u16 width, u16 height, u16 rop,
101 fb_writew(rop, HD64461_BBTROPR);
102 if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
103 saddr = WIDTH * (sy + height) + sx + width;
104 daddr = WIDTH * (dy + height) + dx + width;
107 maddr = ((width >> 3) + 1) * (height + 1) - 1;
110 (((width >> 4) + 1) * (height + 1) - 1) * 2;
112 fb_writew((1 << 5) | 1, HD64461_BBTMDR);
114 fb_writew(1, HD64461_BBTMDR);
116 saddr = WIDTH * sy + sx;
117 daddr = WIDTH * dy + dx;
119 fb_writew((1 << 5), HD64461_BBTMDR);
121 fb_writew(0, HD64461_BBTMDR);
128 fb_writew(width, HD64461_BBTDWR);
129 fb_writew(height, HD64461_BBTDHR);
130 fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
131 fb_writew(saddr >> 16, HD64461_BBTSSARH);
132 fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
133 fb_writew(daddr >> 16, HD64461_BBTDSARH);
136 fb_writew(maddr & 0xffff, HD64461_BBTMARL);
137 fb_writew(maddr >> 16, HD64461_BBTMARH);
139 hitfb_accel_start(truecolor);
142 static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
144 if (rect->rop != ROP_COPY)
145 cfb_fillrect(p, rect);
147 fb_writew(0x00f0, HD64461_BBTROPR);
148 fb_writew(16, HD64461_BBTMDR);
150 if (p->var.bits_per_pixel == 16) {
151 fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
153 hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
155 hitfb_accel_start(1);
157 fb_writew(rect->color, HD64461_GRSCR);
158 hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
160 hitfb_accel_start(0);
166 static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
168 hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
169 area->dx, area->dy, area->width, area->height,
174 static int hitfb_pan_display(struct fb_var_screeninfo *var,
175 struct fb_info *info)
177 int xoffset = var->xoffset;
178 int yoffset = var->yoffset;
183 fb_writew(yoffset, HD64461_LCDCBAR);
188 int hitfb_blank(int blank_mode, struct fb_info *info)
193 v = fb_readw(HD64461_LDR1);
194 v &= ~HD64461_LDR1_DON;
195 fb_writew(v, HD64461_LDR1);
197 v = fb_readw(HD64461_LCDCCR);
198 v |= HD64461_LCDCCR_MOFF;
199 fb_writew(v, HD64461_LCDCCR);
201 v = fb_readw(HD64461_STBCR);
202 v |= HD64461_STBCR_SLCDST;
203 fb_writew(v, HD64461_STBCR);
205 v = fb_readw(HD64461_STBCR);
206 v &= ~HD64461_STBCR_SLCDST;
207 fb_writew(v, HD64461_STBCR);
209 v = fb_readw(HD64461_LDR1);
210 v |= HD64461_LDR1_DON;
211 fb_writew(v, HD64461_LDR1);
213 v = fb_readw(HD64461_LCDCCR);
214 v &= ~HD64461_LCDCCR_MOFF;
215 fb_writew(v, HD64461_LCDCCR);
220 static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
221 unsigned blue, unsigned transp, struct fb_info *info)
223 if (regno >= info->cmap.len)
226 switch (info->var.bits_per_pixel) {
228 fb_writew(regno << 8, HD64461_CPTWAR);
229 fb_writew(red >> 10, HD64461_CPTWDR);
230 fb_writew(green >> 10, HD64461_CPTWDR);
231 fb_writew(blue >> 10, HD64461_CPTWDR);
234 ((u32 *) (info->pseudo_palette))[regno] =
236 ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
242 static struct fb_ops hitfb_ops = {
243 .owner = THIS_MODULE,
244 .fb_setcolreg = hitfb_setcolreg,
245 .fb_blank = hitfb_blank,
246 .fb_pan_display = hitfb_pan_display,
247 .fb_fillrect = hitfb_fillrect,
248 .fb_copyarea = hitfb_copyarea,
249 .fb_imageblit = cfb_imageblit,
252 int __init hitfb_init(void)
254 unsigned short lcdclor, ldr3, ldvndr;
257 if (fb_get_options("hitfb", NULL))
260 hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
261 hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
263 lcdclor = fb_readw(HD64461_LCDCLOR);
264 ldvndr = fb_readw(HD64461_LDVNDR);
265 ldr3 = fb_readw(HD64461_LDR3);
270 hitfb_var.bits_per_pixel = 8;
271 hitfb_var.xres = lcdclor;
274 hitfb_var.bits_per_pixel = 16;
275 hitfb_var.xres = lcdclor / 2;
278 hitfb_fix.line_length = lcdclor;
279 hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
280 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
281 hitfb_var.yres = ldvndr + 1;
282 hitfb_var.xres_virtual = hitfb_var.xres;
283 hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
284 switch (hitfb_var.bits_per_pixel) {
286 hitfb_var.red.offset = 0;
287 hitfb_var.red.length = 8;
288 hitfb_var.green.offset = 0;
289 hitfb_var.green.length = 8;
290 hitfb_var.blue.offset = 0;
291 hitfb_var.blue.length = 8;
292 hitfb_var.transp.offset = 0;
293 hitfb_var.transp.length = 0;
295 case 16: /* RGB 565 */
296 hitfb_var.red.offset = 11;
297 hitfb_var.red.length = 5;
298 hitfb_var.green.offset = 5;
299 hitfb_var.green.length = 6;
300 hitfb_var.blue.offset = 0;
301 hitfb_var.blue.length = 5;
302 hitfb_var.transp.offset = 0;
303 hitfb_var.transp.length = 0;
307 fb_info.fbops = &hitfb_ops;
308 fb_info.var = hitfb_var;
309 fb_info.fix = hitfb_fix;
310 fb_info.pseudo_palette = pseudo_palette;
311 fb_info.flags = FBINFO_DEFAULT;
313 fb_info.screen_base = (void *)hitfb_fix.smem_start;
315 size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
316 fb_alloc_cmap(&fb_info.cmap, size, 0);
318 if (register_framebuffer(&fb_info) < 0)
321 printk(KERN_INFO "fb%d: %s frame buffer device\n",
322 fb_info.node, fb_info.fix.id);
326 static void __exit hitfb_exit(void)
328 unregister_framebuffer(&fb_info);
331 module_init(hitfb_init);
332 module_exit(hitfb_exit);
334 MODULE_LICENSE("GPL");