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1da177e4 LT |
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 | ||
40 | static 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 | ||
47 | static 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 | ||
54 | static u32 pseudo_palette[16]; | |
55 | static struct fb_info fb_info; | |
56 | ||
57 | static inline void hitfb_accel_wait(void) | |
58 | { | |
59 | while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ; | |
60 | } | |
61 | ||
62 | static 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 | ||
71 | static 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 | ||
86 | static 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 | ||
98 | static 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 | ||
146 | static 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 | ||
170 | static 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 | ||
178 | static 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 | ||
192 | int 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 | ||
235 | static 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 | ||
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, | |
265 | .fb_cursor = soft_cursor, | |
266 | }; | |
267 | ||
268 | int __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 | ||
342 | static void __exit hitfb_exit(void) | |
343 | { | |
344 | unregister_framebuffer(&fb_info); | |
345 | } | |
346 | ||
347 | module_init(hitfb_init); | |
348 | module_exit(hitfb_exit); | |
349 | ||
350 | MODULE_LICENSE("GPL"); |