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/config.h>
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/sched.h>
18 #include <linux/errno.h>
19 #include <linux/string.h>
21 #include <linux/tty.h>
22 #include <linux/slab.h>
23 #include <linux/delay.h>
24 #include <linux/init.h>
27 #include <asm/machvec.h>
28 #include <asm/uaccess.h>
29 #include <asm/pgtable.h>
31 #include <asm/hd64461/hd64461.h>
34 #include <asm/cpu/dac.h>
35 #include <asm/hp6xx/hp6xx.h>
40 static struct fb_var_screeninfo hitfb_var __initdata = {
41 .activate = FB_ACTIVATE_NOW,
44 .vmode = FB_VMODE_NONINTERLACED,
47 static struct fb_fix_screeninfo hitfb_fix __initdata = {
48 .id = "Hitachi HD64461",
49 .type = FB_TYPE_PACKED_PIXELS,
51 .accel = FB_ACCEL_NONE,
54 static u32 pseudo_palette[16];
55 static struct fb_info fb_info;
57 static inline void hitfb_accel_wait(void)
59 while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
62 static inline void hitfb_accel_start(int truecolor)
65 fb_writew(6, HD64461_GRCFGR);
67 fb_writew(7, HD64461_GRCFGR);
71 static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
72 u16 width, u16 height)
74 u32 saddr = WIDTH * dy + dx;
78 fb_writew(width, HD64461_BBTDWR);
79 fb_writew(height, HD64461_BBTDHR);
81 fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
82 fb_writew(saddr >> 16, HD64461_BBTDSARH);
86 static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
87 u16 width, u16 height, u16 color)
89 hitfb_accel_set_dest(truecolor, dx, dy, width, height);
91 fb_writew(0x00f0, HD64461_BBTROPR);
92 fb_writew(16, HD64461_BBTMDR);
93 fb_writew(color, HD64461_GRSCR);
95 hitfb_accel_start(truecolor);
98 static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
99 u16 dy, u16 width, u16 height, u16 rop,
105 fb_writew(rop, HD64461_BBTROPR);
106 if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
107 saddr = WIDTH * (sy + height) + sx + width;
108 daddr = WIDTH * (dy + height) + dx + width;
111 maddr = ((width >> 3) + 1) * (height + 1) - 1;
114 (((width >> 4) + 1) * (height + 1) - 1) * 2;
116 fb_writew((1 << 5) | 1, HD64461_BBTMDR);
118 fb_writew(1, HD64461_BBTMDR);
120 saddr = WIDTH * sy + sx;
121 daddr = WIDTH * dy + dx;
123 fb_writew((1 << 5), HD64461_BBTMDR);
125 fb_writew(0, HD64461_BBTMDR);
132 fb_writew(width, HD64461_BBTDWR);
133 fb_writew(height, HD64461_BBTDHR);
134 fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
135 fb_writew(saddr >> 16, HD64461_BBTSSARH);
136 fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
137 fb_writew(daddr >> 16, HD64461_BBTDSARH);
140 fb_writew(maddr & 0xffff, HD64461_BBTMARL);
141 fb_writew(maddr >> 16, HD64461_BBTMARH);
143 hitfb_accel_start(truecolor);
146 static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
148 if (rect->rop != ROP_COPY)
149 cfb_fillrect(p, rect);
151 fb_writew(0x00f0, HD64461_BBTROPR);
152 fb_writew(16, HD64461_BBTMDR);
154 if (p->var.bits_per_pixel == 16) {
155 fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
157 hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
159 hitfb_accel_start(1);
161 fb_writew(rect->color, HD64461_GRSCR);
162 hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
164 hitfb_accel_start(0);
170 static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
172 hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
173 area->dx, area->dy, area->width, area->height,
178 static int hitfb_pan_display(struct fb_var_screeninfo *var,
179 struct fb_info *info)
181 int xoffset = var->xoffset;
182 int yoffset = var->yoffset;
187 fb_writew(yoffset, HD64461_LCDCBAR);
192 int hitfb_blank(int blank_mode, struct fb_info *info)
198 sh_dac_disable(DAC_LCD_BRIGHTNESS);
199 v = fb_readw(HD64461_GPBDR);
200 v |= HD64461_GPBDR_LCDOFF;
201 fb_writew(v, HD64461_GPBDR);
203 v = fb_readw(HD64461_LDR1);
204 v &= ~HD64461_LDR1_DON;
205 fb_writew(v, HD64461_LDR1);
207 v = fb_readw(HD64461_LCDCCR);
208 v |= HD64461_LCDCCR_MOFF;
209 fb_writew(v, HD64461_LCDCCR);
211 v = fb_readw(HD64461_STBCR);
212 v |= HD64461_STBCR_SLCDST;
213 fb_writew(v, HD64461_STBCR);
215 v = fb_readw(HD64461_STBCR);
216 v &= ~HD64461_STBCR_SLCDST;
217 fb_writew(v, HD64461_STBCR);
219 sh_dac_enable(DAC_LCD_BRIGHTNESS);
220 v = fb_readw(HD64461_GPBDR);
221 v &= ~HD64461_GPBDR_LCDOFF;
222 fb_writew(v, HD64461_GPBDR);
224 v = fb_readw(HD64461_LDR1);
225 v |= HD64461_LDR1_DON;
226 fb_writew(v, HD64461_LDR1);
228 v = fb_readw(HD64461_LCDCCR);
229 v &= ~HD64461_LCDCCR_MOFF;
230 fb_writew(v, HD64461_LCDCCR);
235 static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
236 unsigned blue, unsigned transp, struct fb_info *info)
238 if (regno >= info->cmap.len)
241 switch (info->var.bits_per_pixel) {
243 fb_writew(regno << 8, HD64461_CPTWAR);
244 fb_writew(red >> 10, HD64461_CPTWDR);
245 fb_writew(green >> 10, HD64461_CPTWDR);
246 fb_writew(blue >> 10, HD64461_CPTWDR);
249 ((u32 *) (info->pseudo_palette))[regno] =
251 ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
257 static struct fb_ops hitfb_ops = {
258 .owner = THIS_MODULE,
259 .fb_setcolreg = hitfb_setcolreg,
260 .fb_blank = hitfb_blank,
261 .fb_pan_display = hitfb_pan_display,
262 .fb_fillrect = hitfb_fillrect,
263 .fb_copyarea = hitfb_copyarea,
264 .fb_imageblit = cfb_imageblit,
267 int __init hitfb_init(void)
269 unsigned short lcdclor, ldr3, ldvndr;
272 if (fb_get_options("hitfb", NULL))
275 hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
276 hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
278 lcdclor = fb_readw(HD64461_LCDCLOR);
279 ldvndr = fb_readw(HD64461_LDVNDR);
280 ldr3 = fb_readw(HD64461_LDR3);
285 hitfb_var.bits_per_pixel = 8;
286 hitfb_var.xres = lcdclor;
289 hitfb_var.bits_per_pixel = 16;
290 hitfb_var.xres = lcdclor / 2;
293 hitfb_fix.line_length = lcdclor;
294 hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
295 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
296 hitfb_var.yres = ldvndr + 1;
297 hitfb_var.xres_virtual = hitfb_var.xres;
298 hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
299 switch (hitfb_var.bits_per_pixel) {
301 hitfb_var.red.offset = 0;
302 hitfb_var.red.length = 8;
303 hitfb_var.green.offset = 0;
304 hitfb_var.green.length = 8;
305 hitfb_var.blue.offset = 0;
306 hitfb_var.blue.length = 8;
307 hitfb_var.transp.offset = 0;
308 hitfb_var.transp.length = 0;
310 case 16: /* RGB 565 */
311 hitfb_var.red.offset = 11;
312 hitfb_var.red.length = 5;
313 hitfb_var.green.offset = 5;
314 hitfb_var.green.length = 6;
315 hitfb_var.blue.offset = 0;
316 hitfb_var.blue.length = 5;
317 hitfb_var.transp.offset = 0;
318 hitfb_var.transp.length = 0;
322 fb_info.fbops = &hitfb_ops;
323 fb_info.var = hitfb_var;
324 fb_info.fix = hitfb_fix;
325 fb_info.pseudo_palette = pseudo_palette;
326 fb_info.flags = FBINFO_DEFAULT;
328 fb_info.screen_base = (void *)hitfb_fix.smem_start;
330 size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
331 fb_alloc_cmap(&fb_info.cmap, size, 0);
333 if (register_framebuffer(&fb_info) < 0)
336 printk(KERN_INFO "fb%d: %s frame buffer device\n",
337 fb_info.node, fb_info.fix.id);
341 static void __exit hitfb_exit(void)
343 unregister_framebuffer(&fb_info);
346 module_init(hitfb_init);
347 module_exit(hitfb_exit);
349 MODULE_LICENSE("GPL");