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-rw-r--r--drivers/video/hitfb.c350
1 files changed, 350 insertions, 0 deletions
diff --git a/drivers/video/hitfb.c b/drivers/video/hitfb.c
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index 000000000000..0d376ba54814
--- /dev/null
+++ b/drivers/video/hitfb.c
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1/*
2 * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
3 *
4 * (C) 1999 Mihai Spatar
5 * (C) 2000 YAEGASHI Takeshi
6 * (C) 2003, 2004 Paul Mundt
7 * (C) 2003, 2004 Andriy Skulysh
8 *
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
11 * more details.
12 */
13
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>
20#include <linux/mm.h>
21#include <linux/tty.h>
22#include <linux/slab.h>
23#include <linux/delay.h>
24#include <linux/init.h>
25#include <linux/fb.h>
26
27#include <asm/machvec.h>
28#include <asm/uaccess.h>
29#include <asm/pgtable.h>
30#include <asm/io.h>
31#include <asm/hd64461/hd64461.h>
32
33#ifdef MACH_HP600
34#include <asm/cpu/dac.h>
35#include <asm/hp6xx/hp6xx.h>
36#endif
37
38#define WIDTH 640
39
40static struct fb_var_screeninfo hitfb_var __initdata = {
41 .activate = FB_ACTIVATE_NOW,
42 .height = -1,
43 .width = -1,
44 .vmode = FB_VMODE_NONINTERLACED,
45};
46
47static struct fb_fix_screeninfo hitfb_fix __initdata = {
48 .id = "Hitachi HD64461",
49 .type = FB_TYPE_PACKED_PIXELS,
50 .ypanstep = 8,
51 .accel = FB_ACCEL_NONE,
52};
53
54static u32 pseudo_palette[16];
55static struct fb_info fb_info;
56
57static inline void hitfb_accel_wait(void)
58{
59 while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
60}
61
62static inline void hitfb_accel_start(int truecolor)
63{
64 if (truecolor) {
65 fb_writew(6, HD64461_GRCFGR);
66 } else {
67 fb_writew(7, HD64461_GRCFGR);
68 }
69}
70
71static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
72 u16 width, u16 height)
73{
74 u32 saddr = WIDTH * dy + dx;
75 if (truecolor)
76 saddr <<= 1;
77
78 fb_writew(width, HD64461_BBTDWR);
79 fb_writew(height, HD64461_BBTDHR);
80
81 fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
82 fb_writew(saddr >> 16, HD64461_BBTDSARH);
83
84}
85
86static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
87 u16 width, u16 height, u16 color)
88{
89 hitfb_accel_set_dest(truecolor, dx, dy, width, height);
90
91 fb_writew(0x00f0, HD64461_BBTROPR);
92 fb_writew(16, HD64461_BBTMDR);
93 fb_writew(color, HD64461_GRSCR);
94
95 hitfb_accel_start(truecolor);
96}
97
98static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
99 u16 dy, u16 width, u16 height, u16 rop,
100 u32 mask_addr)
101{
102 u32 saddr, daddr;
103 u32 maddr = 0;
104
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;
109 if (mask_addr) {
110 if (truecolor)
111 maddr = ((width >> 3) + 1) * (height + 1) - 1;
112 else
113 maddr =
114 (((width >> 4) + 1) * (height + 1) - 1) * 2;
115
116 fb_writew((1 << 5) | 1, HD64461_BBTMDR);
117 } else
118 fb_writew(1, HD64461_BBTMDR);
119 } else {
120 saddr = WIDTH * sy + sx;
121 daddr = WIDTH * dy + dx;
122 if (mask_addr) {
123 fb_writew((1 << 5), HD64461_BBTMDR);
124 } else {
125 fb_writew(0, HD64461_BBTMDR);
126 }
127 }
128 if (truecolor) {
129 saddr <<= 1;
130 daddr <<= 1;
131 }
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);
138 if (mask_addr) {
139 maddr += mask_addr;
140 fb_writew(maddr & 0xffff, HD64461_BBTMARL);
141 fb_writew(maddr >> 16, HD64461_BBTMARH);
142 }
143 hitfb_accel_start(truecolor);
144}
145
146static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
147{
148 if (rect->rop != ROP_COPY)
149 cfb_fillrect(p, rect);
150 else {
151 fb_writew(0x00f0, HD64461_BBTROPR);
152 fb_writew(16, HD64461_BBTMDR);
153
154 if (p->var.bits_per_pixel == 16) {
155 fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
156 HD64461_GRSCR);
157 hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
158 rect->height);
159 hitfb_accel_start(1);
160 } else {
161 fb_writew(rect->color, HD64461_GRSCR);
162 hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
163 rect->height);
164 hitfb_accel_start(0);
165 }
166 hitfb_accel_wait();
167 }
168}
169
170static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
171{
172 hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
173 area->dx, area->dy, area->width, area->height,
174 0x00cc, 0);
175 hitfb_accel_wait();
176}
177
178static int hitfb_pan_display(struct fb_var_screeninfo *var,
179 struct fb_info *info)
180{
181 int xoffset = var->xoffset;
182 int yoffset = var->yoffset;
183
184 if (xoffset != 0)
185 return -EINVAL;
186
187 fb_writew(yoffset, HD64461_LCDCBAR);
188
189 return 0;
190}
191
192int hitfb_blank(int blank_mode, struct fb_info *info)
193{
194 unsigned short v;
195
196 if (blank_mode) {
197#ifdef MACH_HP600
198 sh_dac_disable(DAC_LCD_BRIGHTNESS);
199 v = fb_readw(HD64461_GPBDR);
200 v |= HD64461_GPBDR_LCDOFF;
201 fb_writew(v, HD64461_GPBDR);
202#endif
203 v = fb_readw(HD64461_LDR1);
204 v &= ~HD64461_LDR1_DON;
205 fb_writew(v, HD64461_LDR1);
206
207 v = fb_readw(HD64461_LCDCCR);
208 v |= HD64461_LCDCCR_MOFF;
209 fb_writew(v, HD64461_LCDCCR);
210
211 v = fb_readw(HD64461_STBCR);
212 v |= HD64461_STBCR_SLCDST;
213 fb_writew(v, HD64461_STBCR);
214 } else {
215 v = fb_readw(HD64461_STBCR);
216 v &= ~HD64461_STBCR_SLCDST;
217 fb_writew(v, HD64461_STBCR);
218#ifdef MACH_HP600
219 sh_dac_enable(DAC_LCD_BRIGHTNESS);
220 v = fb_readw(HD64461_GPBDR);
221 v &= ~HD64461_GPBDR_LCDOFF;
222 fb_writew(v, HD64461_GPBDR);
223#endif
224 v = fb_readw(HD64461_LDR1);
225 v |= HD64461_LDR1_DON;
226 fb_writew(v, HD64461_LDR1);
227
228 v = fb_readw(HD64461_LCDCCR);
229 v &= ~HD64461_LCDCCR_MOFF;
230 fb_writew(v, HD64461_LCDCCR);
231 }
232 return 0;
233}
234
235static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
236 unsigned blue, unsigned transp, struct fb_info *info)
237{
238 if (regno >= info->cmap.len)
239 return 1;
240
241 switch (info->var.bits_per_pixel) {
242 case 8:
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);
247 break;
248 case 16:
249 ((u32 *) (info->pseudo_palette))[regno] =
250 ((red & 0xf800)) |
251 ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
252 break;
253 }
254 return 0;
255}
256
257static 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,
265 .fb_cursor = soft_cursor,
266};
267
268int __init hitfb_init(void)
269{
270 unsigned short lcdclor, ldr3, ldvndr;
271 int size;
272
273 if (fb_get_options("hitfb", NULL))
274 return -ENODEV;
275
276 hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
277 hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
278
279 lcdclor = fb_readw(HD64461_LCDCLOR);
280 ldvndr = fb_readw(HD64461_LDVNDR);
281 ldr3 = fb_readw(HD64461_LDR3);
282
283 switch (ldr3 & 15) {
284 default:
285 case 4:
286 hitfb_var.bits_per_pixel = 8;
287 hitfb_var.xres = lcdclor;
288 break;
289 case 8:
290 hitfb_var.bits_per_pixel = 16;
291 hitfb_var.xres = lcdclor / 2;
292 break;
293 }
294 hitfb_fix.line_length = lcdclor;
295 hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
296 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
297 hitfb_var.yres = ldvndr + 1;
298 hitfb_var.xres_virtual = hitfb_var.xres;
299 hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
300 switch (hitfb_var.bits_per_pixel) {
301 case 8:
302 hitfb_var.red.offset = 0;
303 hitfb_var.red.length = 8;
304 hitfb_var.green.offset = 0;
305 hitfb_var.green.length = 8;
306 hitfb_var.blue.offset = 0;
307 hitfb_var.blue.length = 8;
308 hitfb_var.transp.offset = 0;
309 hitfb_var.transp.length = 0;
310 break;
311 case 16: /* RGB 565 */
312 hitfb_var.red.offset = 11;
313 hitfb_var.red.length = 5;
314 hitfb_var.green.offset = 5;
315 hitfb_var.green.length = 6;
316 hitfb_var.blue.offset = 0;
317 hitfb_var.blue.length = 5;
318 hitfb_var.transp.offset = 0;
319 hitfb_var.transp.length = 0;
320 break;
321 }
322
323 fb_info.fbops = &hitfb_ops;
324 fb_info.var = hitfb_var;
325 fb_info.fix = hitfb_fix;
326 fb_info.pseudo_palette = pseudo_palette;
327 fb_info.flags = FBINFO_DEFAULT;
328
329 fb_info.screen_base = (void *)hitfb_fix.smem_start;
330
331 size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
332 fb_alloc_cmap(&fb_info.cmap, size, 0);
333
334 if (register_framebuffer(&fb_info) < 0)
335 return -EINVAL;
336
337 printk(KERN_INFO "fb%d: %s frame buffer device\n",
338 fb_info.node, fb_info.fix.id);
339 return 0;
340}
341
342static void __exit hitfb_exit(void)
343{
344 unregister_framebuffer(&fb_info);
345}
346
347module_init(hitfb_init);
348module_exit(hitfb_exit);
349
350MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 18:56:38 -0500