1 | /* |
2 | * linux/drivers/video/atafb.c -- Atari builtin chipset frame buffer device |
3 | * |
4 | * Copyright (C) 1994 Martin Schaller & Roman Hodek |
5 | * |
6 | * This file is subject to the terms and conditions of the GNU General Public |
7 | * License. See the file COPYING in the main directory of this archive |
8 | * for more details. |
9 | * |
10 | * History: |
11 | * - 03 Jan 95: Original version by Martin Schaller: The TT driver and |
12 | * all the device independent stuff |
13 | * - 09 Jan 95: Roman: I've added the hardware abstraction (hw_switch) |
14 | * and wrote the Falcon, ST(E), and External drivers |
15 | * based on the original TT driver. |
16 | * - 07 May 95: Martin: Added colormap operations for the external driver |
17 | * - 21 May 95: Martin: Added support for overscan |
18 | * Andreas: some bug fixes for this |
19 | * - Jul 95: Guenther Kelleter <guenther@pool.informatik.rwth-aachen.de>: |
20 | * Programmable Falcon video modes |
21 | * (thanks to Christian Cartus for documentation |
22 | * of VIDEL registers). |
23 | * - 27 Dec 95: Guenther: Implemented user definable video modes "user[0-7]" |
24 | * on minor 24...31. "user0" may be set on commandline by |
25 | * "R<x>;<y>;<depth>". (Makes sense only on Falcon) |
26 | * Video mode switch on Falcon now done at next VBL interrupt |
27 | * to avoid the annoying right shift of the screen. |
28 | * - 23 Sep 97: Juergen: added xres_virtual for cards like ProMST |
29 | * The external-part is legacy, therefore hardware-specific |
30 | * functions like panning/hardwarescrolling/blanking isn't |
31 | * supported. |
32 | * - 29 Sep 97: Juergen: added Romans suggestion for pan_display |
33 | * (var->xoffset was changed even if no set_screen_base avail.) |
34 | * - 05 Oct 97: Juergen: extfb (PACKED_PIXEL) is FB_PSEUDOCOLOR 'cause |
35 | * we know how to set the colors |
36 | * ext_*palette: read from ext_colors (former MV300_colors) |
37 | * write to ext_colors and RAMDAC |
38 | * |
39 | * To do: |
40 | * - For the Falcon it is not possible to set random video modes on |
41 | * SM124 and SC/TV, only the bootup resolution is supported. |
42 | * |
43 | */ |
44 | |
45 | #define ATAFB_TT |
46 | #define ATAFB_STE |
47 | #define ATAFB_EXT |
48 | #define ATAFB_FALCON |
49 | |
50 | #include <linux/kernel.h> |
51 | #include <linux/errno.h> |
52 | #include <linux/string.h> |
53 | #include <linux/mm.h> |
54 | #include <linux/delay.h> |
55 | #include <linux/init.h> |
56 | #include <linux/interrupt.h> |
57 | #include <linux/platform_device.h> |
58 | |
59 | #include <asm/setup.h> |
60 | #include <linux/uaccess.h> |
61 | #include <asm/irq.h> |
62 | #include <asm/io.h> |
63 | |
64 | #include <asm/atarihw.h> |
65 | #include <asm/atariints.h> |
66 | #include <asm/atari_stram.h> |
67 | |
68 | #include <linux/fb.h> |
69 | #include <asm/atarikb.h> |
70 | |
71 | #include "c2p.h" |
72 | #include "atafb.h" |
73 | |
74 | #define SWITCH_ACIA 0x01 /* modes for switch on OverScan */ |
75 | #define SWITCH_SND6 0x40 |
76 | #define SWITCH_SND7 0x80 |
77 | #define SWITCH_NONE 0x00 |
78 | |
79 | |
80 | static int default_par; /* default resolution (0=none) */ |
81 | |
82 | static unsigned long default_mem_req; |
83 | |
84 | static int hwscroll = -1; |
85 | |
86 | static int use_hwscroll = 1; |
87 | |
88 | static int sttt_xres = 640, st_yres = 400, tt_yres = 480; |
89 | static int sttt_xres_virtual = 640, sttt_yres_virtual = 400; |
90 | static int ovsc_offset, ovsc_addlen; |
91 | |
92 | /* |
93 | * Hardware parameters for current mode |
94 | */ |
95 | |
96 | static struct atafb_par { |
97 | void *screen_base; |
98 | int yres_virtual; |
99 | u_long next_line; |
100 | #if defined ATAFB_TT || defined ATAFB_STE |
101 | union { |
102 | struct { |
103 | int mode; |
104 | int sync; |
105 | } tt, st; |
106 | #endif |
107 | #ifdef ATAFB_FALCON |
108 | struct falcon_hw { |
109 | /* Here are fields for storing a video mode, as direct |
110 | * parameters for the hardware. |
111 | */ |
112 | short sync; |
113 | short line_width; |
114 | short line_offset; |
115 | short st_shift; |
116 | short f_shift; |
117 | short vid_control; |
118 | short vid_mode; |
119 | short xoffset; |
120 | short hht, hbb, hbe, hdb, hde, hss; |
121 | short vft, vbb, vbe, vdb, vde, vss; |
122 | /* auxiliary information */ |
123 | short mono; |
124 | short ste_mode; |
125 | short bpp; |
126 | u32 pseudo_palette[16]; |
127 | } falcon; |
128 | #endif |
129 | /* Nothing needed for external mode */ |
130 | } hw; |
131 | } current_par; |
132 | |
133 | /* Don't calculate an own resolution, and thus don't change the one found when |
134 | * booting (currently used for the Falcon to keep settings for internal video |
135 | * hardware extensions (e.g. ScreenBlaster) */ |
136 | static int DontCalcRes = 0; |
137 | |
138 | #ifdef ATAFB_FALCON |
139 | #define HHT hw.falcon.hht |
140 | #define HBB hw.falcon.hbb |
141 | #define HBE hw.falcon.hbe |
142 | #define HDB hw.falcon.hdb |
143 | #define HDE hw.falcon.hde |
144 | #define HSS hw.falcon.hss |
145 | #define VFT hw.falcon.vft |
146 | #define VBB hw.falcon.vbb |
147 | #define VBE hw.falcon.vbe |
148 | #define VDB hw.falcon.vdb |
149 | #define VDE hw.falcon.vde |
150 | #define VSS hw.falcon.vss |
151 | #define VCO_CLOCK25 0x04 |
152 | #define VCO_CSYPOS 0x10 |
153 | #define VCO_VSYPOS 0x20 |
154 | #define VCO_HSYPOS 0x40 |
155 | #define VCO_SHORTOFFS 0x100 |
156 | #define VMO_DOUBLE 0x01 |
157 | #define VMO_INTER 0x02 |
158 | #define VMO_PREMASK 0x0c |
159 | #endif |
160 | |
161 | static struct fb_info fb_info = { |
162 | .fix = { |
163 | .id = "Atari " , |
164 | .visual = FB_VISUAL_PSEUDOCOLOR, |
165 | .accel = FB_ACCEL_NONE, |
166 | } |
167 | }; |
168 | |
169 | static void *screen_base; /* base address of screen */ |
170 | static unsigned long phys_screen_base; /* (only for Overscan) */ |
171 | |
172 | static int screen_len; |
173 | |
174 | static int current_par_valid; |
175 | |
176 | static int mono_moni; |
177 | |
178 | |
179 | #ifdef ATAFB_EXT |
180 | |
181 | /* external video handling */ |
182 | static unsigned int external_xres; |
183 | static unsigned int external_xres_virtual; |
184 | static unsigned int external_yres; |
185 | |
186 | /* |
187 | * not needed - atafb will never support panning/hardwarescroll with external |
188 | * static unsigned int external_yres_virtual; |
189 | */ |
190 | static unsigned int external_depth; |
191 | static int external_pmode; |
192 | static void *external_screen_base; |
193 | static unsigned long external_addr; |
194 | static unsigned long external_len; |
195 | static unsigned long external_vgaiobase; |
196 | static unsigned int external_bitspercol = 6; |
197 | |
198 | /* |
199 | * JOE <joe@amber.dinoco.de>: |
200 | * added card type for external driver, is only needed for |
201 | * colormap handling. |
202 | */ |
203 | enum cardtype { IS_VGA, IS_MV300 }; |
204 | static enum cardtype external_card_type = IS_VGA; |
205 | |
206 | /* |
207 | * The MV300 mixes the color registers. So we need an array of munged |
208 | * indices in order to access the correct reg. |
209 | */ |
210 | static int MV300_reg_1bit[2] = { |
211 | 0, 1 |
212 | }; |
213 | static int MV300_reg_4bit[16] = { |
214 | 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 |
215 | }; |
216 | static int MV300_reg_8bit[256] = { |
217 | 0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240, |
218 | 8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248, |
219 | 4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244, |
220 | 12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, |
221 | 2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242, |
222 | 10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, |
223 | 6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246, |
224 | 14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, |
225 | 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241, |
226 | 9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, |
227 | 5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245, |
228 | 13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, |
229 | 3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, |
230 | 11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251, |
231 | 7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247, |
232 | 15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 |
233 | }; |
234 | |
235 | static int *MV300_reg = MV300_reg_8bit; |
236 | #endif /* ATAFB_EXT */ |
237 | |
238 | |
239 | /* |
240 | * struct fb_ops { |
241 | * * open/release and usage marking |
242 | * struct module *owner; |
243 | * int (*fb_open)(struct fb_info *info, int user); |
244 | * int (*fb_release)(struct fb_info *info, int user); |
245 | * |
246 | * * For framebuffers with strange non linear layouts or that do not |
247 | * * work with normal memory mapped access |
248 | * ssize_t (*fb_read)(struct file *file, char __user *buf, size_t count, loff_t *ppos); |
249 | * ssize_t (*fb_write)(struct file *file, const char __user *buf, size_t count, loff_t *ppos); |
250 | * |
251 | * * checks var and eventually tweaks it to something supported, |
252 | * * DOES NOT MODIFY PAR * |
253 | * int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); |
254 | * |
255 | * * set the video mode according to info->var * |
256 | * int (*fb_set_par)(struct fb_info *info); |
257 | * |
258 | * * set color register * |
259 | * int (*fb_setcolreg)(unsigned int regno, unsigned int red, unsigned int green, |
260 | * unsigned int blue, unsigned int transp, struct fb_info *info); |
261 | * |
262 | * * set color registers in batch * |
263 | * int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); |
264 | * |
265 | * * blank display * |
266 | * int (*fb_blank)(int blank, struct fb_info *info); |
267 | * |
268 | * * pan display * |
269 | * int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); |
270 | * |
271 | * *** The meat of the drawing engine *** |
272 | * * Draws a rectangle * |
273 | * void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); |
274 | * * Copy data from area to another * |
275 | * void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); |
276 | * * Draws a image to the display * |
277 | * void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); |
278 | * |
279 | * * Draws cursor * |
280 | * int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); |
281 | * |
282 | * * wait for blit idle, optional * |
283 | * int (*fb_sync)(struct fb_info *info); |
284 | * |
285 | * * perform fb specific ioctl (optional) * |
286 | * int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, |
287 | * unsigned long arg); |
288 | * |
289 | * * Handle 32bit compat ioctl (optional) * |
290 | * int (*fb_compat_ioctl)(struct fb_info *info, unsigned int cmd, |
291 | * unsigned long arg); |
292 | * |
293 | * * perform fb specific mmap * |
294 | * int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); |
295 | * } ; |
296 | */ |
297 | |
298 | |
299 | /* ++roman: This structure abstracts from the underlying hardware (ST(e), |
300 | * TT, or Falcon. |
301 | * |
302 | * int (*detect)(void) |
303 | * This function should detect the current video mode settings and |
304 | * store them in atafb_predefined[0] for later reference by the |
305 | * user. Return the index+1 of an equivalent predefined mode or 0 |
306 | * if there is no such. |
307 | * |
308 | * int (*encode_fix)(struct fb_fix_screeninfo *fix, |
309 | * struct atafb_par *par) |
310 | * This function should fill in the 'fix' structure based on the |
311 | * values in the 'par' structure. |
312 | * !!! Obsolete, perhaps !!! |
313 | * |
314 | * int (*decode_var)(struct fb_var_screeninfo *var, |
315 | * struct atafb_par *par) |
316 | * Get the video params out of 'var'. If a value doesn't fit, round |
317 | * it up, if it's too big, return EINVAL. |
318 | * Round up in the following order: bits_per_pixel, xres, yres, |
319 | * xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, |
320 | * horizontal timing, vertical timing. |
321 | * |
322 | * int (*encode_var)(struct fb_var_screeninfo *var, |
323 | * struct atafb_par *par); |
324 | * Fill the 'var' structure based on the values in 'par' and maybe |
325 | * other values read out of the hardware. |
326 | * |
327 | * void (*get_par)(struct atafb_par *par) |
328 | * Fill the hardware's 'par' structure. |
329 | * !!! Used only by detect() !!! |
330 | * |
331 | * void (*set_par)(struct atafb_par *par) |
332 | * Set the hardware according to 'par'. |
333 | * |
334 | * void (*set_screen_base)(void *s_base) |
335 | * Set the base address of the displayed frame buffer. Only called |
336 | * if yres_virtual > yres or xres_virtual > xres. |
337 | * |
338 | * int (*blank)(int blank_mode) |
339 | * Blank the screen if blank_mode != 0, else unblank. If blank == NULL then |
340 | * the caller blanks by setting the CLUT to all black. Return 0 if blanking |
341 | * succeeded, !=0 if un-/blanking failed due to e.g. a video mode which |
342 | * doesn't support it. Implements VESA suspend and powerdown modes on |
343 | * hardware that supports disabling hsync/vsync: |
344 | * blank_mode == 2: suspend vsync, 3:suspend hsync, 4: powerdown. |
345 | */ |
346 | |
347 | static struct fb_hwswitch { |
348 | int (*detect)(void); |
349 | int (*encode_fix)(struct fb_fix_screeninfo *fix, |
350 | struct atafb_par *par); |
351 | int (*decode_var)(struct fb_var_screeninfo *var, |
352 | struct atafb_par *par); |
353 | int (*encode_var)(struct fb_var_screeninfo *var, |
354 | struct atafb_par *par); |
355 | void (*get_par)(struct atafb_par *par); |
356 | void (*set_par)(struct atafb_par *par); |
357 | void (*set_screen_base)(void *s_base); |
358 | int (*blank)(int blank_mode); |
359 | int (*pan_display)(struct fb_var_screeninfo *var, |
360 | struct fb_info *info); |
361 | } *fbhw; |
362 | |
363 | static char *autodetect_names[] = { "autodetect" , NULL }; |
364 | static char *stlow_names[] = { "stlow" , NULL }; |
365 | static char *stmid_names[] = { "stmid" , "default5" , NULL }; |
366 | static char *sthigh_names[] = { "sthigh" , "default4" , NULL }; |
367 | static char *ttlow_names[] = { "ttlow" , NULL }; |
368 | static char *ttmid_names[] = { "ttmid" , "default1" , NULL }; |
369 | static char *tthigh_names[] = { "tthigh" , "default2" , NULL }; |
370 | static char *vga2_names[] = { "vga2" , NULL }; |
371 | static char *vga4_names[] = { "vga4" , NULL }; |
372 | static char *vga16_names[] = { "vga16" , "default3" , NULL }; |
373 | static char *vga256_names[] = { "vga256" , NULL }; |
374 | static char *falh2_names[] = { "falh2" , NULL }; |
375 | static char *falh16_names[] = { "falh16" , NULL }; |
376 | |
377 | static char **fb_var_names[] = { |
378 | autodetect_names, |
379 | stlow_names, |
380 | stmid_names, |
381 | sthigh_names, |
382 | ttlow_names, |
383 | ttmid_names, |
384 | tthigh_names, |
385 | vga2_names, |
386 | vga4_names, |
387 | vga16_names, |
388 | vga256_names, |
389 | falh2_names, |
390 | falh16_names, |
391 | NULL |
392 | }; |
393 | |
394 | static struct fb_var_screeninfo atafb_predefined[] = { |
395 | /* |
396 | * yres_virtual == 0 means use hw-scrolling if possible, else yres |
397 | */ |
398 | { /* autodetect */ |
399 | 0, 0, 0, 0, 0, 0, 0, 0, /* xres-grayscale */ |
400 | {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, /* red green blue tran*/ |
401 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
402 | { /* st low */ |
403 | 320, 200, 320, 0, 0, 0, 4, 0, |
404 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
405 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
406 | { /* st mid */ |
407 | 640, 200, 640, 0, 0, 0, 2, 0, |
408 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
409 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
410 | { /* st high */ |
411 | 640, 400, 640, 0, 0, 0, 1, 0, |
412 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
413 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
414 | { /* tt low */ |
415 | 320, 480, 320, 0, 0, 0, 8, 0, |
416 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
417 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
418 | { /* tt mid */ |
419 | 640, 480, 640, 0, 0, 0, 4, 0, |
420 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
421 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
422 | { /* tt high */ |
423 | 1280, 960, 1280, 0, 0, 0, 1, 0, |
424 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
425 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
426 | { /* vga2 */ |
427 | 640, 480, 640, 0, 0, 0, 1, 0, |
428 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, |
429 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
430 | { /* vga4 */ |
431 | 640, 480, 640, 0, 0, 0, 2, 0, |
432 | {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, |
433 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
434 | { /* vga16 */ |
435 | 640, 480, 640, 0, 0, 0, 4, 0, |
436 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, |
437 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
438 | { /* vga256 */ |
439 | 640, 480, 640, 0, 0, 0, 8, 0, |
440 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, |
441 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
442 | { /* falh2 */ |
443 | 896, 608, 896, 0, 0, 0, 1, 0, |
444 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, |
445 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
446 | { /* falh16 */ |
447 | 896, 608, 896, 0, 0, 0, 4, 0, |
448 | {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, |
449 | 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, |
450 | }; |
451 | |
452 | static int num_atafb_predefined = ARRAY_SIZE(atafb_predefined); |
453 | |
454 | static struct fb_videomode atafb_modedb[] __initdata = { |
455 | /* |
456 | * Atari Video Modes |
457 | * |
458 | * If you change these, make sure to update DEFMODE_* as well! |
459 | */ |
460 | |
461 | /* |
462 | * ST/TT Video Modes |
463 | */ |
464 | |
465 | { |
466 | /* 320x200, 15 kHz, 60 Hz (ST low) */ |
467 | "st-low" , 60, 320, 200, 32000, 32, 16, 31, 14, 96, 4, |
468 | 0, FB_VMODE_NONINTERLACED |
469 | }, { |
470 | /* 640x200, 15 kHz, 60 Hz (ST medium) */ |
471 | "st-mid" , 60, 640, 200, 32000, 32, 16, 31, 14, 96, 4, |
472 | 0, FB_VMODE_NONINTERLACED |
473 | }, { |
474 | /* 640x400, 30.25 kHz, 63.5 Hz (ST high) */ |
475 | "st-high" , 63, 640, 400, 32000, 128, 0, 40, 14, 128, 4, |
476 | 0, FB_VMODE_NONINTERLACED |
477 | }, { |
478 | /* 320x480, 15 kHz, 60 Hz (TT low) */ |
479 | "tt-low" , 60, 320, 480, 31041, 120, 100, 8, 16, 140, 30, |
480 | 0, FB_VMODE_NONINTERLACED |
481 | }, { |
482 | /* 640x480, 29 kHz, 57 Hz (TT medium) */ |
483 | "tt-mid" , 60, 640, 480, 31041, 120, 100, 8, 16, 140, 30, |
484 | 0, FB_VMODE_NONINTERLACED |
485 | }, { |
486 | /* 1280x960, 72 kHz, 72 Hz (TT high) */ |
487 | "tt-high" , 72, 1280, 960, 7760, 260, 60, 36, 4, 192, 4, |
488 | 0, FB_VMODE_NONINTERLACED |
489 | }, |
490 | |
491 | /* |
492 | * VGA Video Modes |
493 | */ |
494 | |
495 | { |
496 | /* 640x480, 31 kHz, 60 Hz (VGA) */ |
497 | "vga" , 60, 640, 480, 39721, 42, 18, 31, 11, 100, 3, |
498 | 0, FB_VMODE_NONINTERLACED |
499 | }, { |
500 | /* 640x400, 31 kHz, 70 Hz (VGA) */ |
501 | "vga70" , 70, 640, 400, 39721, 42, 18, 31, 11, 100, 3, |
502 | FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED |
503 | }, |
504 | |
505 | /* |
506 | * Falcon HiRes Video Modes |
507 | */ |
508 | |
509 | { |
510 | /* 896x608, 31 kHz, 60 Hz (Falcon High) */ |
511 | "falh" , 60, 896, 608, 32000, 18, 42, 31, 1, 96,3, |
512 | 0, FB_VMODE_NONINTERLACED |
513 | }, |
514 | }; |
515 | |
516 | #define NUM_TOTAL_MODES ARRAY_SIZE(atafb_modedb) |
517 | |
518 | static char *mode_option __initdata = NULL; |
519 | |
520 | /* default modes */ |
521 | |
522 | #define DEFMODE_TT 5 /* "tt-high" for TT */ |
523 | #define DEFMODE_F30 7 /* "vga70" for Falcon */ |
524 | #define DEFMODE_STE 2 /* "st-high" for ST/E */ |
525 | #define DEFMODE_EXT 6 /* "vga" for external */ |
526 | |
527 | |
528 | static int get_video_mode(char *vname) |
529 | { |
530 | char ***name_list; |
531 | char **name; |
532 | int i; |
533 | |
534 | name_list = fb_var_names; |
535 | for (i = 0; i < num_atafb_predefined; i++) { |
536 | name = *name_list++; |
537 | if (!name || !*name) |
538 | break; |
539 | while (*name) { |
540 | if (!strcmp(vname, *name)) |
541 | return i + 1; |
542 | name++; |
543 | } |
544 | } |
545 | return 0; |
546 | } |
547 | |
548 | |
549 | |
550 | /* ------------------- TT specific functions ---------------------- */ |
551 | |
552 | #ifdef ATAFB_TT |
553 | |
554 | static int tt_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par) |
555 | { |
556 | int mode; |
557 | |
558 | strcpy(p: fix->id, q: "Atari Builtin" ); |
559 | fix->smem_start = phys_screen_base; |
560 | fix->smem_len = screen_len; |
561 | fix->type = FB_TYPE_INTERLEAVED_PLANES; |
562 | fix->type_aux = 2; |
563 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
564 | mode = par->hw.tt.mode & TT_SHIFTER_MODEMASK; |
565 | if (mode == TT_SHIFTER_TTHIGH || mode == TT_SHIFTER_STHIGH) { |
566 | fix->type = FB_TYPE_PACKED_PIXELS; |
567 | fix->type_aux = 0; |
568 | if (mode == TT_SHIFTER_TTHIGH) |
569 | fix->visual = FB_VISUAL_MONO01; |
570 | } |
571 | fix->xpanstep = 0; |
572 | fix->ypanstep = 1; |
573 | fix->ywrapstep = 0; |
574 | fix->line_length = par->next_line; |
575 | fix->accel = FB_ACCEL_ATARIBLITT; |
576 | return 0; |
577 | } |
578 | |
579 | static int tt_decode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
580 | { |
581 | int xres = var->xres; |
582 | int yres = var->yres; |
583 | int bpp = var->bits_per_pixel; |
584 | int linelen; |
585 | int yres_virtual = var->yres_virtual; |
586 | |
587 | if (mono_moni) { |
588 | if (bpp > 1 || xres > sttt_xres * 2 || yres > tt_yres * 2) |
589 | return -EINVAL; |
590 | par->hw.tt.mode = TT_SHIFTER_TTHIGH; |
591 | xres = sttt_xres * 2; |
592 | yres = tt_yres * 2; |
593 | bpp = 1; |
594 | } else { |
595 | if (bpp > 8 || xres > sttt_xres || yres > tt_yres) |
596 | return -EINVAL; |
597 | if (bpp > 4) { |
598 | if (xres > sttt_xres / 2 || yres > tt_yres) |
599 | return -EINVAL; |
600 | par->hw.tt.mode = TT_SHIFTER_TTLOW; |
601 | xres = sttt_xres / 2; |
602 | yres = tt_yres; |
603 | bpp = 8; |
604 | } else if (bpp > 2) { |
605 | if (xres > sttt_xres || yres > tt_yres) |
606 | return -EINVAL; |
607 | if (xres > sttt_xres / 2 || yres > st_yres / 2) { |
608 | par->hw.tt.mode = TT_SHIFTER_TTMID; |
609 | xres = sttt_xres; |
610 | yres = tt_yres; |
611 | bpp = 4; |
612 | } else { |
613 | par->hw.tt.mode = TT_SHIFTER_STLOW; |
614 | xres = sttt_xres / 2; |
615 | yres = st_yres / 2; |
616 | bpp = 4; |
617 | } |
618 | } else if (bpp > 1) { |
619 | if (xres > sttt_xres || yres > st_yres / 2) |
620 | return -EINVAL; |
621 | par->hw.tt.mode = TT_SHIFTER_STMID; |
622 | xres = sttt_xres; |
623 | yres = st_yres / 2; |
624 | bpp = 2; |
625 | } else if (var->xres > sttt_xres || var->yres > st_yres) { |
626 | return -EINVAL; |
627 | } else { |
628 | par->hw.tt.mode = TT_SHIFTER_STHIGH; |
629 | xres = sttt_xres; |
630 | yres = st_yres; |
631 | bpp = 1; |
632 | } |
633 | } |
634 | if (yres_virtual <= 0) |
635 | yres_virtual = 0; |
636 | else if (yres_virtual < yres) |
637 | yres_virtual = yres; |
638 | if (var->sync & FB_SYNC_EXT) |
639 | par->hw.tt.sync = 0; |
640 | else |
641 | par->hw.tt.sync = 1; |
642 | linelen = xres * bpp / 8; |
643 | if (yres_virtual * linelen > screen_len && screen_len) |
644 | return -EINVAL; |
645 | if (yres * linelen > screen_len && screen_len) |
646 | return -EINVAL; |
647 | if (var->yoffset + yres > yres_virtual && yres_virtual) |
648 | return -EINVAL; |
649 | par->yres_virtual = yres_virtual; |
650 | par->screen_base = screen_base + var->yoffset * linelen; |
651 | par->next_line = linelen; |
652 | return 0; |
653 | } |
654 | |
655 | static int tt_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
656 | { |
657 | int linelen; |
658 | memset(var, 0, sizeof(struct fb_var_screeninfo)); |
659 | var->red.offset = 0; |
660 | var->red.length = 4; |
661 | var->red.msb_right = 0; |
662 | var->grayscale = 0; |
663 | |
664 | var->pixclock = 31041; |
665 | var->left_margin = 120; /* these may be incorrect */ |
666 | var->right_margin = 100; |
667 | var->upper_margin = 8; |
668 | var->lower_margin = 16; |
669 | var->hsync_len = 140; |
670 | var->vsync_len = 30; |
671 | |
672 | var->height = -1; |
673 | var->width = -1; |
674 | |
675 | if (par->hw.tt.sync & 1) |
676 | var->sync = 0; |
677 | else |
678 | var->sync = FB_SYNC_EXT; |
679 | |
680 | switch (par->hw.tt.mode & TT_SHIFTER_MODEMASK) { |
681 | case TT_SHIFTER_STLOW: |
682 | var->xres = sttt_xres / 2; |
683 | var->xres_virtual = sttt_xres_virtual / 2; |
684 | var->yres = st_yres / 2; |
685 | var->bits_per_pixel = 4; |
686 | break; |
687 | case TT_SHIFTER_STMID: |
688 | var->xres = sttt_xres; |
689 | var->xres_virtual = sttt_xres_virtual; |
690 | var->yres = st_yres / 2; |
691 | var->bits_per_pixel = 2; |
692 | break; |
693 | case TT_SHIFTER_STHIGH: |
694 | var->xres = sttt_xres; |
695 | var->xres_virtual = sttt_xres_virtual; |
696 | var->yres = st_yres; |
697 | var->bits_per_pixel = 1; |
698 | break; |
699 | case TT_SHIFTER_TTLOW: |
700 | var->xres = sttt_xres / 2; |
701 | var->xres_virtual = sttt_xres_virtual / 2; |
702 | var->yres = tt_yres; |
703 | var->bits_per_pixel = 8; |
704 | break; |
705 | case TT_SHIFTER_TTMID: |
706 | var->xres = sttt_xres; |
707 | var->xres_virtual = sttt_xres_virtual; |
708 | var->yres = tt_yres; |
709 | var->bits_per_pixel = 4; |
710 | break; |
711 | case TT_SHIFTER_TTHIGH: |
712 | var->red.length = 0; |
713 | var->xres = sttt_xres * 2; |
714 | var->xres_virtual = sttt_xres_virtual * 2; |
715 | var->yres = tt_yres * 2; |
716 | var->bits_per_pixel = 1; |
717 | break; |
718 | } |
719 | var->blue = var->green = var->red; |
720 | var->transp.offset = 0; |
721 | var->transp.length = 0; |
722 | var->transp.msb_right = 0; |
723 | linelen = var->xres_virtual * var->bits_per_pixel / 8; |
724 | if (!use_hwscroll) |
725 | var->yres_virtual = var->yres; |
726 | else if (screen_len) { |
727 | if (par->yres_virtual) |
728 | var->yres_virtual = par->yres_virtual; |
729 | else |
730 | /* yres_virtual == 0 means use maximum */ |
731 | var->yres_virtual = screen_len / linelen; |
732 | } else { |
733 | if (hwscroll < 0) |
734 | var->yres_virtual = 2 * var->yres; |
735 | else |
736 | var->yres_virtual = var->yres + hwscroll * 16; |
737 | } |
738 | var->xoffset = 0; |
739 | if (screen_base) |
740 | var->yoffset = (par->screen_base - screen_base) / linelen; |
741 | else |
742 | var->yoffset = 0; |
743 | var->nonstd = 0; |
744 | var->activate = 0; |
745 | var->vmode = FB_VMODE_NONINTERLACED; |
746 | return 0; |
747 | } |
748 | |
749 | static void tt_get_par(struct atafb_par *par) |
750 | { |
751 | unsigned long addr; |
752 | par->hw.tt.mode = shifter_tt.tt_shiftmode; |
753 | par->hw.tt.sync = shifter_st.syncmode; |
754 | addr = ((shifter_st.bas_hi & 0xff) << 16) | |
755 | ((shifter_st.bas_md & 0xff) << 8) | |
756 | ((shifter_st.bas_lo & 0xff)); |
757 | par->screen_base = atari_stram_to_virt(addr); |
758 | } |
759 | |
760 | static void tt_set_par(struct atafb_par *par) |
761 | { |
762 | shifter_tt.tt_shiftmode = par->hw.tt.mode; |
763 | shifter_st.syncmode = par->hw.tt.sync; |
764 | /* only set screen_base if really necessary */ |
765 | if (current_par.screen_base != par->screen_base) |
766 | fbhw->set_screen_base(par->screen_base); |
767 | } |
768 | |
769 | static int tt_setcolreg(unsigned int regno, unsigned int red, |
770 | unsigned int green, unsigned int blue, |
771 | unsigned int transp, struct fb_info *info) |
772 | { |
773 | if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) |
774 | regno += 254; |
775 | if (regno > 255) |
776 | return 1; |
777 | tt_palette[regno] = (((red >> 12) << 8) | ((green >> 12) << 4) | |
778 | (blue >> 12)); |
779 | if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == |
780 | TT_SHIFTER_STHIGH && regno == 254) |
781 | tt_palette[0] = 0; |
782 | return 0; |
783 | } |
784 | |
785 | static int tt_detect(void) |
786 | { |
787 | struct atafb_par par; |
788 | |
789 | /* Determine the connected monitor: The DMA sound must be |
790 | * disabled before reading the MFP GPIP, because the Sound |
791 | * Done Signal and the Monochrome Detect are XORed together! |
792 | * |
793 | * Even on a TT, we should look if there is a DMA sound. It was |
794 | * announced that the Eagle is TT compatible, but only the PCM is |
795 | * missing... |
796 | */ |
797 | if (ATARIHW_PRESENT(PCM_8BIT)) { |
798 | tt_dmasnd.ctrl = DMASND_CTRL_OFF; |
799 | udelay(20); /* wait a while for things to settle down */ |
800 | } |
801 | mono_moni = (st_mfp.par_dt_reg & 0x80) == 0; |
802 | |
803 | tt_get_par(par: &par); |
804 | tt_encode_var(var: &atafb_predefined[0], par: &par); |
805 | |
806 | return 1; |
807 | } |
808 | |
809 | #endif /* ATAFB_TT */ |
810 | |
811 | /* ------------------- Falcon specific functions ---------------------- */ |
812 | |
813 | #ifdef ATAFB_FALCON |
814 | |
815 | static int mon_type; /* Falcon connected monitor */ |
816 | static int f030_bus_width; /* Falcon ram bus width (for vid_control) */ |
817 | #define F_MON_SM 0 |
818 | #define F_MON_SC 1 |
819 | #define F_MON_VGA 2 |
820 | #define F_MON_TV 3 |
821 | |
822 | static struct pixel_clock { |
823 | unsigned long f; /* f/[Hz] */ |
824 | unsigned long t; /* t/[ps] (=1/f) */ |
825 | int right, hsync, left; /* standard timing in clock cycles, not pixel */ |
826 | /* hsync initialized in falcon_detect() */ |
827 | int sync_mask; /* or-mask for hw.falcon.sync to set this clock */ |
828 | int control_mask; /* ditto, for hw.falcon.vid_control */ |
829 | } f25 = { |
830 | 25175000, 39721, 18, 0, 42, 0x0, VCO_CLOCK25 |
831 | }, f32 = { |
832 | 32000000, 31250, 18, 0, 42, 0x0, 0 |
833 | }, fext = { |
834 | 0, 0, 18, 0, 42, 0x1, 0 |
835 | }; |
836 | |
837 | /* VIDEL-prescale values [mon_type][pixel_length from VCO] */ |
838 | static int vdl_prescale[4][3] = { |
839 | { 4,2,1 }, { 4,2,1 }, { 4,2,2 }, { 4,2,1 } |
840 | }; |
841 | |
842 | /* Default hsync timing [mon_type] in picoseconds */ |
843 | static long h_syncs[4] = { 3000000, 4875000, 4000000, 4875000 }; |
844 | |
845 | static inline int hxx_prescale(struct falcon_hw *hw) |
846 | { |
847 | return hw->ste_mode ? 16 |
848 | : vdl_prescale[mon_type][hw->vid_mode >> 2 & 0x3]; |
849 | } |
850 | |
851 | static int falcon_encode_fix(struct fb_fix_screeninfo *fix, |
852 | struct atafb_par *par) |
853 | { |
854 | strcpy(p: fix->id, q: "Atari Builtin" ); |
855 | fix->smem_start = phys_screen_base; |
856 | fix->smem_len = screen_len; |
857 | fix->type = FB_TYPE_INTERLEAVED_PLANES; |
858 | fix->type_aux = 2; |
859 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
860 | fix->xpanstep = 1; |
861 | fix->ypanstep = 1; |
862 | fix->ywrapstep = 0; |
863 | if (par->hw.falcon.mono) { |
864 | fix->type = FB_TYPE_PACKED_PIXELS; |
865 | fix->type_aux = 0; |
866 | /* no smooth scrolling with longword aligned video mem */ |
867 | fix->xpanstep = 32; |
868 | } else if (par->hw.falcon.f_shift & 0x100) { |
869 | fix->type = FB_TYPE_PACKED_PIXELS; |
870 | fix->type_aux = 0; |
871 | /* Is this ok or should it be DIRECTCOLOR? */ |
872 | fix->visual = FB_VISUAL_TRUECOLOR; |
873 | fix->xpanstep = 2; |
874 | } |
875 | fix->line_length = par->next_line; |
876 | fix->accel = FB_ACCEL_ATARIBLITT; |
877 | return 0; |
878 | } |
879 | |
880 | static int falcon_decode_var(struct fb_var_screeninfo *var, |
881 | struct atafb_par *par) |
882 | { |
883 | int bpp = var->bits_per_pixel; |
884 | int xres = var->xres; |
885 | int yres = var->yres; |
886 | int xres_virtual = var->xres_virtual; |
887 | int yres_virtual = var->yres_virtual; |
888 | int left_margin, right_margin, hsync_len; |
889 | int upper_margin, lower_margin, vsync_len; |
890 | int linelen; |
891 | int interlace = 0, doubleline = 0; |
892 | struct pixel_clock *pclock; |
893 | int plen; /* width of pixel in clock cycles */ |
894 | int xstretch; |
895 | int prescale; |
896 | int longoffset = 0; |
897 | int hfreq, vfreq; |
898 | int hdb_off, hde_off, base_off; |
899 | int gstart, gend1, gend2, align; |
900 | |
901 | /* |
902 | Get the video params out of 'var'. If a value doesn't fit, round |
903 | it up, if it's too big, return EINVAL. |
904 | Round up in the following order: bits_per_pixel, xres, yres, |
905 | xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, |
906 | horizontal timing, vertical timing. |
907 | |
908 | There is a maximum of screen resolution determined by pixelclock |
909 | and minimum frame rate -- (X+hmarg.)*(Y+vmarg.)*vfmin <= pixelclock. |
910 | In interlace mode this is " * " *vfmin <= pixelclock. |
911 | Additional constraints: hfreq. |
912 | Frequency range for multisync monitors is given via command line. |
913 | For TV and SM124 both frequencies are fixed. |
914 | |
915 | X % 16 == 0 to fit 8x?? font (except 1 bitplane modes must use X%32 == 0) |
916 | Y % 16 == 0 to fit 8x16 font |
917 | Y % 8 == 0 if Y<400 |
918 | |
919 | Currently interlace and doubleline mode in var are ignored. |
920 | On SM124 and TV only the standard resolutions can be used. |
921 | */ |
922 | |
923 | /* Reject uninitialized mode */ |
924 | if (!xres || !yres || !bpp) |
925 | return -EINVAL; |
926 | |
927 | if (mon_type == F_MON_SM && bpp != 1) |
928 | return -EINVAL; |
929 | |
930 | if (bpp <= 1) { |
931 | bpp = 1; |
932 | par->hw.falcon.f_shift = 0x400; |
933 | par->hw.falcon.st_shift = 0x200; |
934 | } else if (bpp <= 2) { |
935 | bpp = 2; |
936 | par->hw.falcon.f_shift = 0x000; |
937 | par->hw.falcon.st_shift = 0x100; |
938 | } else if (bpp <= 4) { |
939 | bpp = 4; |
940 | par->hw.falcon.f_shift = 0x000; |
941 | par->hw.falcon.st_shift = 0x000; |
942 | } else if (bpp <= 8) { |
943 | bpp = 8; |
944 | par->hw.falcon.f_shift = 0x010; |
945 | } else if (bpp <= 16) { |
946 | bpp = 16; /* packed pixel mode */ |
947 | par->hw.falcon.f_shift = 0x100; /* hicolor, no overlay */ |
948 | } else |
949 | return -EINVAL; |
950 | par->hw.falcon.bpp = bpp; |
951 | |
952 | if (mon_type == F_MON_SM || DontCalcRes) { |
953 | /* Skip all calculations. VGA/TV/SC1224 only supported. */ |
954 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; |
955 | |
956 | if (bpp > myvar->bits_per_pixel || |
957 | var->xres > myvar->xres || |
958 | var->yres > myvar->yres) |
959 | return -EINVAL; |
960 | fbhw->get_par(par); /* Current par will be new par */ |
961 | goto set_screen_base; /* Don't forget this */ |
962 | } |
963 | |
964 | /* Only some fixed resolutions < 640x400 */ |
965 | if (xres <= 320) |
966 | xres = 320; |
967 | else if (xres <= 640 && bpp != 16) |
968 | xres = 640; |
969 | if (yres <= 200) |
970 | yres = 200; |
971 | else if (yres <= 240) |
972 | yres = 240; |
973 | else if (yres <= 400) |
974 | yres = 400; |
975 | |
976 | /* 2 planes must use STE compatibility mode */ |
977 | par->hw.falcon.ste_mode = bpp == 2; |
978 | par->hw.falcon.mono = bpp == 1; |
979 | |
980 | /* Total and visible scanline length must be a multiple of one longword, |
981 | * this and the console fontwidth yields the alignment for xres and |
982 | * xres_virtual. |
983 | * TODO: this way "odd" fontheights are not supported |
984 | * |
985 | * Special case in STE mode: blank and graphic positions don't align, |
986 | * avoid trash at right margin |
987 | */ |
988 | if (par->hw.falcon.ste_mode) |
989 | xres = (xres + 63) & ~63; |
990 | else if (bpp == 1) |
991 | xres = (xres + 31) & ~31; |
992 | else |
993 | xres = (xres + 15) & ~15; |
994 | if (yres >= 400) |
995 | yres = (yres + 15) & ~15; |
996 | else |
997 | yres = (yres + 7) & ~7; |
998 | |
999 | if (xres_virtual < xres) |
1000 | xres_virtual = xres; |
1001 | else if (bpp == 1) |
1002 | xres_virtual = (xres_virtual + 31) & ~31; |
1003 | else |
1004 | xres_virtual = (xres_virtual + 15) & ~15; |
1005 | |
1006 | if (yres_virtual <= 0) |
1007 | yres_virtual = 0; |
1008 | else if (yres_virtual < yres) |
1009 | yres_virtual = yres; |
1010 | |
1011 | par->hw.falcon.line_width = bpp * xres / 16; |
1012 | par->hw.falcon.line_offset = bpp * (xres_virtual - xres) / 16; |
1013 | |
1014 | /* single or double pixel width */ |
1015 | xstretch = (xres < 640) ? 2 : 1; |
1016 | |
1017 | #if 0 /* SM124 supports only 640x400, this is rejected above */ |
1018 | if (mon_type == F_MON_SM) { |
1019 | if (xres != 640 && yres != 400) |
1020 | return -EINVAL; |
1021 | plen = 1; |
1022 | pclock = &f32; |
1023 | /* SM124-mode is special */ |
1024 | par->hw.falcon.ste_mode = 1; |
1025 | par->hw.falcon.f_shift = 0x000; |
1026 | par->hw.falcon.st_shift = 0x200; |
1027 | left_margin = hsync_len = 128 / plen; |
1028 | right_margin = 0; |
1029 | /* TODO set all margins */ |
1030 | } else |
1031 | #endif |
1032 | if (mon_type == F_MON_SC || mon_type == F_MON_TV) { |
1033 | plen = 2 * xstretch; |
1034 | if (var->pixclock > f32.t * plen) |
1035 | return -EINVAL; |
1036 | pclock = &f32; |
1037 | if (yres > 240) |
1038 | interlace = 1; |
1039 | if (var->pixclock == 0) { |
1040 | /* set some minimal margins which center the screen */ |
1041 | left_margin = 32; |
1042 | right_margin = 18; |
1043 | hsync_len = pclock->hsync / plen; |
1044 | upper_margin = 31; |
1045 | lower_margin = 14; |
1046 | vsync_len = interlace ? 3 : 4; |
1047 | } else { |
1048 | left_margin = var->left_margin; |
1049 | right_margin = var->right_margin; |
1050 | hsync_len = var->hsync_len; |
1051 | upper_margin = var->upper_margin; |
1052 | lower_margin = var->lower_margin; |
1053 | vsync_len = var->vsync_len; |
1054 | if (var->vmode & FB_VMODE_INTERLACED) { |
1055 | upper_margin = (upper_margin + 1) / 2; |
1056 | lower_margin = (lower_margin + 1) / 2; |
1057 | vsync_len = (vsync_len + 1) / 2; |
1058 | } else if (var->vmode & FB_VMODE_DOUBLE) { |
1059 | upper_margin *= 2; |
1060 | lower_margin *= 2; |
1061 | vsync_len *= 2; |
1062 | } |
1063 | } |
1064 | } else { /* F_MON_VGA */ |
1065 | if (bpp == 16) |
1066 | xstretch = 2; /* Double pixel width only for hicolor */ |
1067 | /* Default values are used for vert./hor. timing if no pixelclock given. */ |
1068 | if (var->pixclock == 0) { |
1069 | /* Choose master pixelclock depending on hor. timing */ |
1070 | plen = 1 * xstretch; |
1071 | if ((plen * xres + f25.right + f25.hsync + f25.left) * |
1072 | fb_info.monspecs.hfmin < f25.f) |
1073 | pclock = &f25; |
1074 | else if ((plen * xres + f32.right + f32.hsync + |
1075 | f32.left) * fb_info.monspecs.hfmin < f32.f) |
1076 | pclock = &f32; |
1077 | else if ((plen * xres + fext.right + fext.hsync + |
1078 | fext.left) * fb_info.monspecs.hfmin < fext.f && |
1079 | fext.f) |
1080 | pclock = &fext; |
1081 | else |
1082 | return -EINVAL; |
1083 | |
1084 | left_margin = pclock->left / plen; |
1085 | right_margin = pclock->right / plen; |
1086 | hsync_len = pclock->hsync / plen; |
1087 | upper_margin = 31; |
1088 | lower_margin = 11; |
1089 | vsync_len = 3; |
1090 | } else { |
1091 | /* Choose largest pixelclock <= wanted clock */ |
1092 | int i; |
1093 | unsigned long pcl = ULONG_MAX; |
1094 | pclock = 0; |
1095 | for (i = 1; i <= 4; i *= 2) { |
1096 | if (f25.t * i >= var->pixclock && |
1097 | f25.t * i < pcl) { |
1098 | pcl = f25.t * i; |
1099 | pclock = &f25; |
1100 | } |
1101 | if (f32.t * i >= var->pixclock && |
1102 | f32.t * i < pcl) { |
1103 | pcl = f32.t * i; |
1104 | pclock = &f32; |
1105 | } |
1106 | if (fext.t && fext.t * i >= var->pixclock && |
1107 | fext.t * i < pcl) { |
1108 | pcl = fext.t * i; |
1109 | pclock = &fext; |
1110 | } |
1111 | } |
1112 | if (!pclock) |
1113 | return -EINVAL; |
1114 | plen = pcl / pclock->t; |
1115 | |
1116 | left_margin = var->left_margin; |
1117 | right_margin = var->right_margin; |
1118 | hsync_len = var->hsync_len; |
1119 | upper_margin = var->upper_margin; |
1120 | lower_margin = var->lower_margin; |
1121 | vsync_len = var->vsync_len; |
1122 | /* Internal unit is [single lines per (half-)frame] */ |
1123 | if (var->vmode & FB_VMODE_INTERLACED) { |
1124 | /* # lines in half frame */ |
1125 | /* External unit is [lines per full frame] */ |
1126 | upper_margin = (upper_margin + 1) / 2; |
1127 | lower_margin = (lower_margin + 1) / 2; |
1128 | vsync_len = (vsync_len + 1) / 2; |
1129 | } else if (var->vmode & FB_VMODE_DOUBLE) { |
1130 | /* External unit is [double lines per frame] */ |
1131 | upper_margin *= 2; |
1132 | lower_margin *= 2; |
1133 | vsync_len *= 2; |
1134 | } |
1135 | } |
1136 | if (pclock == &fext) |
1137 | longoffset = 1; /* VIDEL doesn't synchronize on short offset */ |
1138 | } |
1139 | /* Is video bus bandwidth (32MB/s) too low for this resolution? */ |
1140 | /* this is definitely wrong if bus clock != 32MHz */ |
1141 | if (pclock->f / plen / 8 * bpp > 32000000L) |
1142 | return -EINVAL; |
1143 | |
1144 | if (vsync_len < 1) |
1145 | vsync_len = 1; |
1146 | |
1147 | /* include sync lengths in right/lower margin for all calculations */ |
1148 | right_margin += hsync_len; |
1149 | lower_margin += vsync_len; |
1150 | |
1151 | /* ! In all calculations of margins we use # of lines in half frame |
1152 | * (which is a full frame in non-interlace mode), so we can switch |
1153 | * between interlace and non-interlace without messing around |
1154 | * with these. |
1155 | */ |
1156 | again: |
1157 | /* Set base_offset 128 and video bus width */ |
1158 | par->hw.falcon.vid_control = mon_type | f030_bus_width; |
1159 | if (!longoffset) |
1160 | par->hw.falcon.vid_control |= VCO_SHORTOFFS; /* base_offset 64 */ |
1161 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) |
1162 | par->hw.falcon.vid_control |= VCO_HSYPOS; |
1163 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) |
1164 | par->hw.falcon.vid_control |= VCO_VSYPOS; |
1165 | /* Pixelclock */ |
1166 | par->hw.falcon.vid_control |= pclock->control_mask; |
1167 | /* External or internal clock */ |
1168 | par->hw.falcon.sync = pclock->sync_mask | 0x2; |
1169 | /* Pixellength and prescale */ |
1170 | par->hw.falcon.vid_mode = (2 / plen) << 2; |
1171 | if (doubleline) |
1172 | par->hw.falcon.vid_mode |= VMO_DOUBLE; |
1173 | if (interlace) |
1174 | par->hw.falcon.vid_mode |= VMO_INTER; |
1175 | |
1176 | /********************* |
1177 | * Horizontal timing: unit = [master clock cycles] |
1178 | * unit of hxx-registers: [master clock cycles * prescale] |
1179 | * Hxx-registers are 9 bit wide |
1180 | * |
1181 | * 1 line = ((hht + 2) * 2 * prescale) clock cycles |
1182 | * |
1183 | * graphic output = hdb & 0x200 ? |
1184 | * ((hht + 2) * 2 - hdb + hde) * prescale - hdboff + hdeoff: |
1185 | * (hht + 2 - hdb + hde) * prescale - hdboff + hdeoff |
1186 | * (this must be a multiple of plen*128/bpp, on VGA pixels |
1187 | * to the right may be cut off with a bigger right margin) |
1188 | * |
1189 | * start of graphics relative to start of 1st halfline = hdb & 0x200 ? |
1190 | * (hdb - hht - 2) * prescale + hdboff : |
1191 | * hdb * prescale + hdboff |
1192 | * |
1193 | * end of graphics relative to start of 1st halfline = |
1194 | * (hde + hht + 2) * prescale + hdeoff |
1195 | *********************/ |
1196 | /* Calculate VIDEL registers */ |
1197 | { |
1198 | prescale = hxx_prescale(hw: &par->hw.falcon); |
1199 | base_off = par->hw.falcon.vid_control & VCO_SHORTOFFS ? 64 : 128; |
1200 | |
1201 | /* Offsets depend on video mode */ |
1202 | /* Offsets are in clock cycles, divide by prescale to |
1203 | * calculate hd[be]-registers |
1204 | */ |
1205 | if (par->hw.falcon.f_shift & 0x100) { |
1206 | align = 1; |
1207 | hde_off = 0; |
1208 | hdb_off = (base_off + 16 * plen) + prescale; |
1209 | } else { |
1210 | align = 128 / bpp; |
1211 | hde_off = ((128 / bpp + 2) * plen); |
1212 | if (par->hw.falcon.ste_mode) |
1213 | hdb_off = (64 + base_off + (128 / bpp + 2) * plen) + prescale; |
1214 | else |
1215 | hdb_off = (base_off + (128 / bpp + 18) * plen) + prescale; |
1216 | } |
1217 | |
1218 | gstart = (prescale / 2 + plen * left_margin) / prescale; |
1219 | /* gend1 is for hde (gend-gstart multiple of align), shifter's xres */ |
1220 | gend1 = gstart + roundup(xres, align) * plen / prescale; |
1221 | /* gend2 is for hbb, visible xres (rest to gend1 is cut off by hblank) */ |
1222 | gend2 = gstart + xres * plen / prescale; |
1223 | par->HHT = plen * (left_margin + xres + right_margin) / |
1224 | (2 * prescale) - 2; |
1225 | /* par->HHT = (gend2 + plen * right_margin / prescale) / 2 - 2;*/ |
1226 | |
1227 | par->HDB = gstart - hdb_off / prescale; |
1228 | par->HBE = gstart; |
1229 | if (par->HDB < 0) |
1230 | par->HDB += par->HHT + 2 + 0x200; |
1231 | par->HDE = gend1 - par->HHT - 2 - hde_off / prescale; |
1232 | par->HBB = gend2 - par->HHT - 2; |
1233 | #if 0 |
1234 | /* One more Videl constraint: data fetch of two lines must not overlap */ |
1235 | if ((par->HDB & 0x200) && (par->HDB & ~0x200) - par->HDE <= 5) { |
1236 | /* if this happens increase margins, decrease hfreq. */ |
1237 | } |
1238 | #endif |
1239 | if (hde_off % prescale) |
1240 | par->HBB++; /* compensate for non matching hde and hbb */ |
1241 | par->HSS = par->HHT + 2 - plen * hsync_len / prescale; |
1242 | if (par->HSS < par->HBB) |
1243 | par->HSS = par->HBB; |
1244 | } |
1245 | |
1246 | /* check hor. frequency */ |
1247 | hfreq = pclock->f / ((par->HHT + 2) * prescale * 2); |
1248 | if (hfreq > fb_info.monspecs.hfmax && mon_type != F_MON_VGA) { |
1249 | /* ++guenther: ^^^^^^^^^^^^^^^^^^^ can't remember why I did this */ |
1250 | /* Too high -> enlarge margin */ |
1251 | left_margin += 1; |
1252 | right_margin += 1; |
1253 | goto again; |
1254 | } |
1255 | if (hfreq > fb_info.monspecs.hfmax || hfreq < fb_info.monspecs.hfmin) |
1256 | return -EINVAL; |
1257 | |
1258 | /* Vxx-registers */ |
1259 | /* All Vxx must be odd in non-interlace, since frame starts in the middle |
1260 | * of the first displayed line! |
1261 | * One frame consists of VFT+1 half lines. VFT+1 must be even in |
1262 | * non-interlace, odd in interlace mode for synchronisation. |
1263 | * Vxx-registers are 11 bit wide |
1264 | */ |
1265 | par->VBE = (upper_margin * 2 + 1); /* must begin on odd halfline */ |
1266 | par->VDB = par->VBE; |
1267 | par->VDE = yres; |
1268 | if (!interlace) |
1269 | par->VDE <<= 1; |
1270 | if (doubleline) |
1271 | par->VDE <<= 1; /* VDE now half lines per (half-)frame */ |
1272 | par->VDE += par->VDB; |
1273 | par->VBB = par->VDE; |
1274 | par->VFT = par->VBB + (lower_margin * 2 - 1) - 1; |
1275 | par->VSS = par->VFT + 1 - (vsync_len * 2 - 1); |
1276 | /* vbb,vss,vft must be even in interlace mode */ |
1277 | if (interlace) { |
1278 | par->VBB++; |
1279 | par->VSS++; |
1280 | par->VFT++; |
1281 | } |
1282 | |
1283 | /* V-frequency check, hope I didn't create any loop here. */ |
1284 | /* Interlace and doubleline are mutually exclusive. */ |
1285 | vfreq = (hfreq * 2) / (par->VFT + 1); |
1286 | if (vfreq > fb_info.monspecs.vfmax && !doubleline && !interlace) { |
1287 | /* Too high -> try again with doubleline */ |
1288 | doubleline = 1; |
1289 | goto again; |
1290 | } else if (vfreq < fb_info.monspecs.vfmin && !interlace && !doubleline) { |
1291 | /* Too low -> try again with interlace */ |
1292 | interlace = 1; |
1293 | goto again; |
1294 | } else if (vfreq < fb_info.monspecs.vfmin && doubleline) { |
1295 | /* Doubleline too low -> clear doubleline and enlarge margins */ |
1296 | int lines; |
1297 | doubleline = 0; |
1298 | for (lines = 0; |
1299 | (hfreq * 2) / (par->VFT + 1 + 4 * lines - 2 * yres) > |
1300 | fb_info.monspecs.vfmax; |
1301 | lines++) |
1302 | ; |
1303 | upper_margin += lines; |
1304 | lower_margin += lines; |
1305 | goto again; |
1306 | } else if (vfreq > fb_info.monspecs.vfmax && doubleline) { |
1307 | /* Doubleline too high -> enlarge margins */ |
1308 | int lines; |
1309 | for (lines = 0; |
1310 | (hfreq * 2) / (par->VFT + 1 + 4 * lines) > |
1311 | fb_info.monspecs.vfmax; |
1312 | lines += 2) |
1313 | ; |
1314 | upper_margin += lines; |
1315 | lower_margin += lines; |
1316 | goto again; |
1317 | } else if (vfreq > fb_info.monspecs.vfmax && interlace) { |
1318 | /* Interlace, too high -> enlarge margins */ |
1319 | int lines; |
1320 | for (lines = 0; |
1321 | (hfreq * 2) / (par->VFT + 1 + 4 * lines) > |
1322 | fb_info.monspecs.vfmax; |
1323 | lines++) |
1324 | ; |
1325 | upper_margin += lines; |
1326 | lower_margin += lines; |
1327 | goto again; |
1328 | } else if (vfreq < fb_info.monspecs.vfmin || |
1329 | vfreq > fb_info.monspecs.vfmax) |
1330 | return -EINVAL; |
1331 | |
1332 | set_screen_base: |
1333 | linelen = xres_virtual * bpp / 8; |
1334 | if (yres_virtual * linelen > screen_len && screen_len) |
1335 | return -EINVAL; |
1336 | if (yres * linelen > screen_len && screen_len) |
1337 | return -EINVAL; |
1338 | if (var->yoffset + yres > yres_virtual && yres_virtual) |
1339 | return -EINVAL; |
1340 | par->yres_virtual = yres_virtual; |
1341 | par->screen_base = screen_base + var->yoffset * linelen; |
1342 | par->hw.falcon.xoffset = 0; |
1343 | |
1344 | par->next_line = linelen; |
1345 | |
1346 | return 0; |
1347 | } |
1348 | |
1349 | static int falcon_encode_var(struct fb_var_screeninfo *var, |
1350 | struct atafb_par *par) |
1351 | { |
1352 | /* !!! only for VGA !!! */ |
1353 | int linelen; |
1354 | int prescale, plen; |
1355 | int hdb_off, hde_off, base_off; |
1356 | struct falcon_hw *hw = &par->hw.falcon; |
1357 | |
1358 | memset(var, 0, sizeof(struct fb_var_screeninfo)); |
1359 | /* possible frequencies: 25.175 or 32MHz */ |
1360 | var->pixclock = hw->sync & 0x1 ? fext.t : |
1361 | hw->vid_control & VCO_CLOCK25 ? f25.t : f32.t; |
1362 | |
1363 | var->height = -1; |
1364 | var->width = -1; |
1365 | |
1366 | var->sync = 0; |
1367 | if (hw->vid_control & VCO_HSYPOS) |
1368 | var->sync |= FB_SYNC_HOR_HIGH_ACT; |
1369 | if (hw->vid_control & VCO_VSYPOS) |
1370 | var->sync |= FB_SYNC_VERT_HIGH_ACT; |
1371 | |
1372 | var->vmode = FB_VMODE_NONINTERLACED; |
1373 | if (hw->vid_mode & VMO_INTER) |
1374 | var->vmode |= FB_VMODE_INTERLACED; |
1375 | if (hw->vid_mode & VMO_DOUBLE) |
1376 | var->vmode |= FB_VMODE_DOUBLE; |
1377 | |
1378 | /* visible y resolution: |
1379 | * Graphics display starts at line VDB and ends at line |
1380 | * VDE. If interlace mode off unit of VC-registers is |
1381 | * half lines, else lines. |
1382 | */ |
1383 | var->yres = hw->vde - hw->vdb; |
1384 | if (!(var->vmode & FB_VMODE_INTERLACED)) |
1385 | var->yres >>= 1; |
1386 | if (var->vmode & FB_VMODE_DOUBLE) |
1387 | var->yres >>= 1; |
1388 | |
1389 | /* |
1390 | * to get bpp, we must examine f_shift and st_shift. |
1391 | * f_shift is valid if any of bits no. 10, 8 or 4 |
1392 | * is set. Priority in f_shift is: 10 ">" 8 ">" 4, i.e. |
1393 | * if bit 10 set then bit 8 and bit 4 don't care... |
1394 | * If all these bits are 0 get display depth from st_shift |
1395 | * (as for ST and STE) |
1396 | */ |
1397 | if (hw->f_shift & 0x400) /* 2 colors */ |
1398 | var->bits_per_pixel = 1; |
1399 | else if (hw->f_shift & 0x100) /* hicolor */ |
1400 | var->bits_per_pixel = 16; |
1401 | else if (hw->f_shift & 0x010) /* 8 bitplanes */ |
1402 | var->bits_per_pixel = 8; |
1403 | else if (hw->st_shift == 0) |
1404 | var->bits_per_pixel = 4; |
1405 | else if (hw->st_shift == 0x100) |
1406 | var->bits_per_pixel = 2; |
1407 | else /* if (hw->st_shift == 0x200) */ |
1408 | var->bits_per_pixel = 1; |
1409 | |
1410 | var->xres = hw->line_width * 16 / var->bits_per_pixel; |
1411 | var->xres_virtual = var->xres + hw->line_offset * 16 / var->bits_per_pixel; |
1412 | if (hw->xoffset) |
1413 | var->xres_virtual += 16; |
1414 | |
1415 | if (var->bits_per_pixel == 16) { |
1416 | var->red.offset = 11; |
1417 | var->red.length = 5; |
1418 | var->red.msb_right = 0; |
1419 | var->green.offset = 5; |
1420 | var->green.length = 6; |
1421 | var->green.msb_right = 0; |
1422 | var->blue.offset = 0; |
1423 | var->blue.length = 5; |
1424 | var->blue.msb_right = 0; |
1425 | } else { |
1426 | var->red.offset = 0; |
1427 | var->red.length = hw->ste_mode ? 4 : 6; |
1428 | if (var->red.length > var->bits_per_pixel) |
1429 | var->red.length = var->bits_per_pixel; |
1430 | var->red.msb_right = 0; |
1431 | var->grayscale = 0; |
1432 | var->blue = var->green = var->red; |
1433 | } |
1434 | var->transp.offset = 0; |
1435 | var->transp.length = 0; |
1436 | var->transp.msb_right = 0; |
1437 | |
1438 | linelen = var->xres_virtual * var->bits_per_pixel / 8; |
1439 | if (screen_len) { |
1440 | if (par->yres_virtual) |
1441 | var->yres_virtual = par->yres_virtual; |
1442 | else |
1443 | /* yres_virtual == 0 means use maximum */ |
1444 | var->yres_virtual = screen_len / linelen; |
1445 | } else { |
1446 | if (hwscroll < 0) |
1447 | var->yres_virtual = 2 * var->yres; |
1448 | else |
1449 | var->yres_virtual = var->yres + hwscroll * 16; |
1450 | } |
1451 | var->xoffset = 0; /* TODO change this */ |
1452 | |
1453 | /* hdX-offsets */ |
1454 | prescale = hxx_prescale(hw); |
1455 | plen = 4 >> (hw->vid_mode >> 2 & 0x3); |
1456 | base_off = hw->vid_control & VCO_SHORTOFFS ? 64 : 128; |
1457 | if (hw->f_shift & 0x100) { |
1458 | hde_off = 0; |
1459 | hdb_off = (base_off + 16 * plen) + prescale; |
1460 | } else { |
1461 | hde_off = ((128 / var->bits_per_pixel + 2) * plen); |
1462 | if (hw->ste_mode) |
1463 | hdb_off = (64 + base_off + (128 / var->bits_per_pixel + 2) * plen) |
1464 | + prescale; |
1465 | else |
1466 | hdb_off = (base_off + (128 / var->bits_per_pixel + 18) * plen) |
1467 | + prescale; |
1468 | } |
1469 | |
1470 | /* Right margin includes hsync */ |
1471 | var->left_margin = hdb_off + prescale * ((hw->hdb & 0x1ff) - |
1472 | (hw->hdb & 0x200 ? 2 + hw->hht : 0)); |
1473 | if (hw->ste_mode || mon_type != F_MON_VGA) |
1474 | var->right_margin = prescale * (hw->hht + 2 - hw->hde) - hde_off; |
1475 | else |
1476 | /* can't use this in ste_mode, because hbb is +1 off */ |
1477 | var->right_margin = prescale * (hw->hht + 2 - hw->hbb); |
1478 | var->hsync_len = prescale * (hw->hht + 2 - hw->hss); |
1479 | |
1480 | /* Lower margin includes vsync */ |
1481 | var->upper_margin = hw->vdb / 2; /* round down to full lines */ |
1482 | var->lower_margin = (hw->vft + 1 - hw->vde + 1) / 2; /* round up */ |
1483 | var->vsync_len = (hw->vft + 1 - hw->vss + 1) / 2; /* round up */ |
1484 | if (var->vmode & FB_VMODE_INTERLACED) { |
1485 | var->upper_margin *= 2; |
1486 | var->lower_margin *= 2; |
1487 | var->vsync_len *= 2; |
1488 | } else if (var->vmode & FB_VMODE_DOUBLE) { |
1489 | var->upper_margin = (var->upper_margin + 1) / 2; |
1490 | var->lower_margin = (var->lower_margin + 1) / 2; |
1491 | var->vsync_len = (var->vsync_len + 1) / 2; |
1492 | } |
1493 | |
1494 | var->pixclock *= plen; |
1495 | var->left_margin /= plen; |
1496 | var->right_margin /= plen; |
1497 | var->hsync_len /= plen; |
1498 | |
1499 | var->right_margin -= var->hsync_len; |
1500 | var->lower_margin -= var->vsync_len; |
1501 | |
1502 | if (screen_base) |
1503 | var->yoffset = (par->screen_base - screen_base) / linelen; |
1504 | else |
1505 | var->yoffset = 0; |
1506 | var->nonstd = 0; /* what is this for? */ |
1507 | var->activate = 0; |
1508 | return 0; |
1509 | } |
1510 | |
1511 | static int f_change_mode; |
1512 | static struct falcon_hw f_new_mode; |
1513 | static int f_pan_display; |
1514 | |
1515 | static void falcon_get_par(struct atafb_par *par) |
1516 | { |
1517 | unsigned long addr; |
1518 | struct falcon_hw *hw = &par->hw.falcon; |
1519 | |
1520 | hw->line_width = shifter_f030.scn_width; |
1521 | hw->line_offset = shifter_f030.off_next; |
1522 | hw->st_shift = videl.st_shift & 0x300; |
1523 | hw->f_shift = videl.f_shift; |
1524 | hw->vid_control = videl.control; |
1525 | hw->vid_mode = videl.mode; |
1526 | hw->sync = shifter_st.syncmode & 0x1; |
1527 | hw->xoffset = videl.xoffset & 0xf; |
1528 | hw->hht = videl.hht; |
1529 | hw->hbb = videl.hbb; |
1530 | hw->hbe = videl.hbe; |
1531 | hw->hdb = videl.hdb; |
1532 | hw->hde = videl.hde; |
1533 | hw->hss = videl.hss; |
1534 | hw->vft = videl.vft; |
1535 | hw->vbb = videl.vbb; |
1536 | hw->vbe = videl.vbe; |
1537 | hw->vdb = videl.vdb; |
1538 | hw->vde = videl.vde; |
1539 | hw->vss = videl.vss; |
1540 | |
1541 | addr = (shifter_st.bas_hi & 0xff) << 16 | |
1542 | (shifter_st.bas_md & 0xff) << 8 | |
1543 | (shifter_st.bas_lo & 0xff); |
1544 | par->screen_base = atari_stram_to_virt(addr); |
1545 | |
1546 | /* derived parameters */ |
1547 | hw->ste_mode = (hw->f_shift & 0x510) == 0 && hw->st_shift == 0x100; |
1548 | hw->mono = (hw->f_shift & 0x400) || |
1549 | ((hw->f_shift & 0x510) == 0 && hw->st_shift == 0x200); |
1550 | } |
1551 | |
1552 | static void falcon_set_par(struct atafb_par *par) |
1553 | { |
1554 | f_change_mode = 0; |
1555 | |
1556 | /* only set screen_base if really necessary */ |
1557 | if (current_par.screen_base != par->screen_base) |
1558 | fbhw->set_screen_base(par->screen_base); |
1559 | |
1560 | /* Don't touch any other registers if we keep the default resolution */ |
1561 | if (DontCalcRes) |
1562 | return; |
1563 | |
1564 | /* Tell vbl-handler to change video mode. |
1565 | * We change modes only on next VBL, to avoid desynchronisation |
1566 | * (a shift to the right and wrap around by a random number of pixels |
1567 | * in all monochrome modes). |
1568 | * This seems to work on my Falcon. |
1569 | */ |
1570 | f_new_mode = par->hw.falcon; |
1571 | f_change_mode = 1; |
1572 | } |
1573 | |
1574 | static irqreturn_t falcon_vbl_switcher(int irq, void *dummy) |
1575 | { |
1576 | struct falcon_hw *hw = &f_new_mode; |
1577 | |
1578 | if (f_change_mode) { |
1579 | f_change_mode = 0; |
1580 | |
1581 | if (hw->sync & 0x1) { |
1582 | /* Enable external pixelclock. This code only for ScreenWonder */ |
1583 | *(volatile unsigned short *)0xffff9202 = 0xffbf; |
1584 | } else { |
1585 | /* Turn off external clocks. Read sets all output bits to 1. */ |
1586 | *(volatile unsigned short *)0xffff9202; |
1587 | } |
1588 | shifter_st.syncmode = hw->sync; |
1589 | |
1590 | videl.hht = hw->hht; |
1591 | videl.hbb = hw->hbb; |
1592 | videl.hbe = hw->hbe; |
1593 | videl.hdb = hw->hdb; |
1594 | videl.hde = hw->hde; |
1595 | videl.hss = hw->hss; |
1596 | videl.vft = hw->vft; |
1597 | videl.vbb = hw->vbb; |
1598 | videl.vbe = hw->vbe; |
1599 | videl.vdb = hw->vdb; |
1600 | videl.vde = hw->vde; |
1601 | videl.vss = hw->vss; |
1602 | |
1603 | videl.f_shift = 0; /* write enables Falcon palette, 0: 4 planes */ |
1604 | if (hw->ste_mode) { |
1605 | videl.st_shift = hw->st_shift; /* write enables STE palette */ |
1606 | } else { |
1607 | /* IMPORTANT: |
1608 | * set st_shift 0, so we can tell the screen-depth if f_shift == 0. |
1609 | * Writing 0 to f_shift enables 4 plane Falcon mode but |
1610 | * doesn't set st_shift. st_shift != 0 (!= 4planes) is impossible |
1611 | * with Falcon palette. |
1612 | */ |
1613 | videl.st_shift = 0; |
1614 | /* now back to Falcon palette mode */ |
1615 | videl.f_shift = hw->f_shift; |
1616 | } |
1617 | /* writing to st_shift changed scn_width and vid_mode */ |
1618 | videl.xoffset = hw->xoffset; |
1619 | shifter_f030.scn_width = hw->line_width; |
1620 | shifter_f030.off_next = hw->line_offset; |
1621 | videl.control = hw->vid_control; |
1622 | videl.mode = hw->vid_mode; |
1623 | } |
1624 | if (f_pan_display) { |
1625 | f_pan_display = 0; |
1626 | videl.xoffset = current_par.hw.falcon.xoffset; |
1627 | shifter_f030.off_next = current_par.hw.falcon.line_offset; |
1628 | } |
1629 | return IRQ_HANDLED; |
1630 | } |
1631 | |
1632 | static int falcon_pan_display(struct fb_var_screeninfo *var, |
1633 | struct fb_info *info) |
1634 | { |
1635 | struct atafb_par *par = info->par; |
1636 | |
1637 | int xoffset; |
1638 | int bpp = info->var.bits_per_pixel; |
1639 | |
1640 | if (bpp == 1) |
1641 | var->xoffset = round_up(var->xoffset, 32); |
1642 | if (bpp != 16) |
1643 | par->hw.falcon.xoffset = var->xoffset & 15; |
1644 | else { |
1645 | par->hw.falcon.xoffset = 0; |
1646 | var->xoffset = round_up(var->xoffset, 2); |
1647 | } |
1648 | par->hw.falcon.line_offset = bpp * |
1649 | (info->var.xres_virtual - info->var.xres) / 16; |
1650 | if (par->hw.falcon.xoffset) |
1651 | par->hw.falcon.line_offset -= bpp; |
1652 | xoffset = var->xoffset - par->hw.falcon.xoffset; |
1653 | |
1654 | par->screen_base = screen_base + |
1655 | (var->yoffset * info->var.xres_virtual + xoffset) * bpp / 8; |
1656 | if (fbhw->set_screen_base) |
1657 | fbhw->set_screen_base(par->screen_base); |
1658 | else |
1659 | return -EINVAL; /* shouldn't happen */ |
1660 | f_pan_display = 1; |
1661 | return 0; |
1662 | } |
1663 | |
1664 | static int falcon_setcolreg(unsigned int regno, unsigned int red, |
1665 | unsigned int green, unsigned int blue, |
1666 | unsigned int transp, struct fb_info *info) |
1667 | { |
1668 | if (regno > 255) |
1669 | return 1; |
1670 | f030_col[regno] = (((red & 0xfc00) << 16) | |
1671 | ((green & 0xfc00) << 8) | |
1672 | ((blue & 0xfc00) >> 8)); |
1673 | if (regno < 16) { |
1674 | shifter_tt.color_reg[regno] = |
1675 | ((((red & 0xe000) >> 13) | ((red & 0x1000) >> 12)) << 8) | |
1676 | ((((green & 0xe000) >> 13) | ((green & 0x1000) >> 12)) << 4) | |
1677 | ((blue & 0xe000) >> 13) | ((blue & 0x1000) >> 12); |
1678 | ((u32 *)info->pseudo_palette)[regno] = ((red & 0xf800) | |
1679 | ((green & 0xfc00) >> 5) | |
1680 | ((blue & 0xf800) >> 11)); |
1681 | } |
1682 | return 0; |
1683 | } |
1684 | |
1685 | static int falcon_blank(int blank_mode) |
1686 | { |
1687 | /* ++guenther: we can switch off graphics by changing VDB and VDE, |
1688 | * so VIDEL doesn't hog the bus while saving. |
1689 | * (this may affect usleep()). |
1690 | */ |
1691 | int vdb, vss, hbe, hss; |
1692 | |
1693 | if (mon_type == F_MON_SM) /* this doesn't work on SM124 */ |
1694 | return 1; |
1695 | |
1696 | vdb = current_par.VDB; |
1697 | vss = current_par.VSS; |
1698 | hbe = current_par.HBE; |
1699 | hss = current_par.HSS; |
1700 | |
1701 | if (blank_mode >= 1) { |
1702 | /* disable graphics output (this speeds up the CPU) ... */ |
1703 | vdb = current_par.VFT + 1; |
1704 | /* ... and blank all lines */ |
1705 | hbe = current_par.HHT + 2; |
1706 | } |
1707 | /* use VESA suspend modes on VGA monitors */ |
1708 | if (mon_type == F_MON_VGA) { |
1709 | if (blank_mode == 2 || blank_mode == 4) |
1710 | vss = current_par.VFT + 1; |
1711 | if (blank_mode == 3 || blank_mode == 4) |
1712 | hss = current_par.HHT + 2; |
1713 | } |
1714 | |
1715 | videl.vdb = vdb; |
1716 | videl.vss = vss; |
1717 | videl.hbe = hbe; |
1718 | videl.hss = hss; |
1719 | |
1720 | return 0; |
1721 | } |
1722 | |
1723 | static int falcon_detect(void) |
1724 | { |
1725 | struct atafb_par par; |
1726 | unsigned char fhw; |
1727 | |
1728 | /* Determine connected monitor and set monitor parameters */ |
1729 | fhw = *(unsigned char *)0xffff8006; |
1730 | mon_type = fhw >> 6 & 0x3; |
1731 | /* bit 1 of fhw: 1=32 bit ram bus, 0=16 bit */ |
1732 | f030_bus_width = fhw << 6 & 0x80; |
1733 | switch (mon_type) { |
1734 | case F_MON_SM: |
1735 | fb_info.monspecs.vfmin = 70; |
1736 | fb_info.monspecs.vfmax = 72; |
1737 | fb_info.monspecs.hfmin = 35713; |
1738 | fb_info.monspecs.hfmax = 35715; |
1739 | break; |
1740 | case F_MON_SC: |
1741 | case F_MON_TV: |
1742 | /* PAL...NTSC */ |
1743 | fb_info.monspecs.vfmin = 49; /* not 50, since TOS defaults to 49.9x Hz */ |
1744 | fb_info.monspecs.vfmax = 60; |
1745 | fb_info.monspecs.hfmin = 15620; |
1746 | fb_info.monspecs.hfmax = 15755; |
1747 | break; |
1748 | } |
1749 | /* initialize hsync-len */ |
1750 | f25.hsync = h_syncs[mon_type] / f25.t; |
1751 | f32.hsync = h_syncs[mon_type] / f32.t; |
1752 | if (fext.t) |
1753 | fext.hsync = h_syncs[mon_type] / fext.t; |
1754 | |
1755 | falcon_get_par(par: &par); |
1756 | falcon_encode_var(var: &atafb_predefined[0], par: &par); |
1757 | |
1758 | /* Detected mode is always the "autodetect" slot */ |
1759 | return 1; |
1760 | } |
1761 | |
1762 | #endif /* ATAFB_FALCON */ |
1763 | |
1764 | /* ------------------- ST(E) specific functions ---------------------- */ |
1765 | |
1766 | #ifdef ATAFB_STE |
1767 | |
1768 | static int stste_encode_fix(struct fb_fix_screeninfo *fix, |
1769 | struct atafb_par *par) |
1770 | { |
1771 | int mode; |
1772 | |
1773 | strcpy(p: fix->id, q: "Atari Builtin" ); |
1774 | fix->smem_start = phys_screen_base; |
1775 | fix->smem_len = screen_len; |
1776 | fix->type = FB_TYPE_INTERLEAVED_PLANES; |
1777 | fix->type_aux = 2; |
1778 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
1779 | mode = par->hw.st.mode & 3; |
1780 | if (mode == ST_HIGH) { |
1781 | fix->type = FB_TYPE_PACKED_PIXELS; |
1782 | fix->type_aux = 0; |
1783 | fix->visual = FB_VISUAL_MONO10; |
1784 | } |
1785 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) { |
1786 | fix->xpanstep = 16; |
1787 | fix->ypanstep = 1; |
1788 | } else { |
1789 | fix->xpanstep = 0; |
1790 | fix->ypanstep = 0; |
1791 | } |
1792 | fix->ywrapstep = 0; |
1793 | fix->line_length = par->next_line; |
1794 | fix->accel = FB_ACCEL_ATARIBLITT; |
1795 | return 0; |
1796 | } |
1797 | |
1798 | static int stste_decode_var(struct fb_var_screeninfo *var, |
1799 | struct atafb_par *par) |
1800 | { |
1801 | int xres = var->xres; |
1802 | int yres = var->yres; |
1803 | int bpp = var->bits_per_pixel; |
1804 | int linelen; |
1805 | int yres_virtual = var->yres_virtual; |
1806 | |
1807 | if (mono_moni) { |
1808 | if (bpp > 1 || xres > sttt_xres || yres > st_yres) |
1809 | return -EINVAL; |
1810 | par->hw.st.mode = ST_HIGH; |
1811 | xres = sttt_xres; |
1812 | yres = st_yres; |
1813 | bpp = 1; |
1814 | } else { |
1815 | if (bpp > 4 || xres > sttt_xres || yres > st_yres) |
1816 | return -EINVAL; |
1817 | if (bpp > 2) { |
1818 | if (xres > sttt_xres / 2 || yres > st_yres / 2) |
1819 | return -EINVAL; |
1820 | par->hw.st.mode = ST_LOW; |
1821 | xres = sttt_xres / 2; |
1822 | yres = st_yres / 2; |
1823 | bpp = 4; |
1824 | } else if (bpp > 1) { |
1825 | if (xres > sttt_xres || yres > st_yres / 2) |
1826 | return -EINVAL; |
1827 | par->hw.st.mode = ST_MID; |
1828 | xres = sttt_xres; |
1829 | yres = st_yres / 2; |
1830 | bpp = 2; |
1831 | } else |
1832 | return -EINVAL; |
1833 | } |
1834 | if (yres_virtual <= 0) |
1835 | yres_virtual = 0; |
1836 | else if (yres_virtual < yres) |
1837 | yres_virtual = yres; |
1838 | if (var->sync & FB_SYNC_EXT) |
1839 | par->hw.st.sync = (par->hw.st.sync & ~1) | 1; |
1840 | else |
1841 | par->hw.st.sync = (par->hw.st.sync & ~1); |
1842 | linelen = xres * bpp / 8; |
1843 | if (yres_virtual * linelen > screen_len && screen_len) |
1844 | return -EINVAL; |
1845 | if (yres * linelen > screen_len && screen_len) |
1846 | return -EINVAL; |
1847 | if (var->yoffset + yres > yres_virtual && yres_virtual) |
1848 | return -EINVAL; |
1849 | par->yres_virtual = yres_virtual; |
1850 | par->screen_base = screen_base + var->yoffset * linelen; |
1851 | par->next_line = linelen; |
1852 | return 0; |
1853 | } |
1854 | |
1855 | static int stste_encode_var(struct fb_var_screeninfo *var, |
1856 | struct atafb_par *par) |
1857 | { |
1858 | int linelen; |
1859 | memset(var, 0, sizeof(struct fb_var_screeninfo)); |
1860 | var->red.offset = 0; |
1861 | var->red.length = ATARIHW_PRESENT(EXTD_SHIFTER) ? 4 : 3; |
1862 | var->red.msb_right = 0; |
1863 | var->grayscale = 0; |
1864 | |
1865 | var->pixclock = 31041; |
1866 | var->left_margin = 120; /* these are incorrect */ |
1867 | var->right_margin = 100; |
1868 | var->upper_margin = 8; |
1869 | var->lower_margin = 16; |
1870 | var->hsync_len = 140; |
1871 | var->vsync_len = 30; |
1872 | |
1873 | var->height = -1; |
1874 | var->width = -1; |
1875 | |
1876 | if (!(par->hw.st.sync & 1)) |
1877 | var->sync = 0; |
1878 | else |
1879 | var->sync = FB_SYNC_EXT; |
1880 | |
1881 | switch (par->hw.st.mode & 3) { |
1882 | case ST_LOW: |
1883 | var->xres = sttt_xres / 2; |
1884 | var->yres = st_yres / 2; |
1885 | var->bits_per_pixel = 4; |
1886 | break; |
1887 | case ST_MID: |
1888 | var->xres = sttt_xres; |
1889 | var->yres = st_yres / 2; |
1890 | var->bits_per_pixel = 2; |
1891 | break; |
1892 | case ST_HIGH: |
1893 | var->xres = sttt_xres; |
1894 | var->yres = st_yres; |
1895 | var->bits_per_pixel = 1; |
1896 | break; |
1897 | } |
1898 | var->blue = var->green = var->red; |
1899 | var->transp.offset = 0; |
1900 | var->transp.length = 0; |
1901 | var->transp.msb_right = 0; |
1902 | var->xres_virtual = sttt_xres_virtual; |
1903 | linelen = var->xres_virtual * var->bits_per_pixel / 8; |
1904 | ovsc_addlen = linelen * (sttt_yres_virtual - st_yres); |
1905 | |
1906 | if (!use_hwscroll) |
1907 | var->yres_virtual = var->yres; |
1908 | else if (screen_len) { |
1909 | if (par->yres_virtual) |
1910 | var->yres_virtual = par->yres_virtual; |
1911 | else |
1912 | /* yres_virtual == 0 means use maximum */ |
1913 | var->yres_virtual = screen_len / linelen; |
1914 | } else { |
1915 | if (hwscroll < 0) |
1916 | var->yres_virtual = 2 * var->yres; |
1917 | else |
1918 | var->yres_virtual = var->yres + hwscroll * 16; |
1919 | } |
1920 | var->xoffset = 0; |
1921 | if (screen_base) |
1922 | var->yoffset = (par->screen_base - screen_base) / linelen; |
1923 | else |
1924 | var->yoffset = 0; |
1925 | var->nonstd = 0; |
1926 | var->activate = 0; |
1927 | var->vmode = FB_VMODE_NONINTERLACED; |
1928 | return 0; |
1929 | } |
1930 | |
1931 | static void stste_get_par(struct atafb_par *par) |
1932 | { |
1933 | unsigned long addr; |
1934 | par->hw.st.mode = shifter_tt.st_shiftmode; |
1935 | par->hw.st.sync = shifter_st.syncmode; |
1936 | addr = ((shifter_st.bas_hi & 0xff) << 16) | |
1937 | ((shifter_st.bas_md & 0xff) << 8); |
1938 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
1939 | addr |= (shifter_st.bas_lo & 0xff); |
1940 | par->screen_base = atari_stram_to_virt(addr); |
1941 | } |
1942 | |
1943 | static void stste_set_par(struct atafb_par *par) |
1944 | { |
1945 | shifter_tt.st_shiftmode = par->hw.st.mode; |
1946 | shifter_st.syncmode = par->hw.st.sync; |
1947 | /* only set screen_base if really necessary */ |
1948 | if (current_par.screen_base != par->screen_base) |
1949 | fbhw->set_screen_base(par->screen_base); |
1950 | } |
1951 | |
1952 | static int stste_setcolreg(unsigned int regno, unsigned int red, |
1953 | unsigned int green, unsigned int blue, |
1954 | unsigned int transp, struct fb_info *info) |
1955 | { |
1956 | if (regno > 15) |
1957 | return 1; |
1958 | red >>= 12; |
1959 | blue >>= 12; |
1960 | green >>= 12; |
1961 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
1962 | shifter_tt.color_reg[regno] = |
1963 | ((((red & 0xe) >> 1) | ((red & 1) << 3)) << 8) | |
1964 | ((((green & 0xe) >> 1) | ((green & 1) << 3)) << 4) | |
1965 | ((blue & 0xe) >> 1) | ((blue & 1) << 3); |
1966 | else |
1967 | shifter_tt.color_reg[regno] = |
1968 | ((red & 0xe) << 7) | |
1969 | ((green & 0xe) << 3) | |
1970 | ((blue & 0xe) >> 1); |
1971 | return 0; |
1972 | } |
1973 | |
1974 | static int stste_detect(void) |
1975 | { |
1976 | struct atafb_par par; |
1977 | |
1978 | /* Determine the connected monitor: The DMA sound must be |
1979 | * disabled before reading the MFP GPIP, because the Sound |
1980 | * Done Signal and the Monochrome Detect are XORed together! |
1981 | */ |
1982 | if (ATARIHW_PRESENT(PCM_8BIT)) { |
1983 | tt_dmasnd.ctrl = DMASND_CTRL_OFF; |
1984 | udelay(20); /* wait a while for things to settle down */ |
1985 | } |
1986 | mono_moni = (st_mfp.par_dt_reg & 0x80) == 0; |
1987 | |
1988 | stste_get_par(par: &par); |
1989 | stste_encode_var(var: &atafb_predefined[0], par: &par); |
1990 | |
1991 | if (!ATARIHW_PRESENT(EXTD_SHIFTER)) |
1992 | use_hwscroll = 0; |
1993 | return 1; |
1994 | } |
1995 | |
1996 | static void stste_set_screen_base(void *s_base) |
1997 | { |
1998 | unsigned long addr; |
1999 | addr = atari_stram_to_phys(s_base); |
2000 | /* Setup Screen Memory */ |
2001 | shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
2002 | shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); |
2003 | if (ATARIHW_PRESENT(EXTD_SHIFTER)) |
2004 | shifter_st.bas_lo = (unsigned char)(addr & 0x0000ff); |
2005 | } |
2006 | |
2007 | #endif /* ATAFB_STE */ |
2008 | |
2009 | /* Switching the screen size should be done during vsync, otherwise |
2010 | * the margins may get messed up. This is a well known problem of |
2011 | * the ST's video system. |
2012 | * |
2013 | * Unfortunately there is hardly any way to find the vsync, as the |
2014 | * vertical blank interrupt is no longer in time on machines with |
2015 | * overscan type modifications. |
2016 | * |
2017 | * We can, however, use Timer B to safely detect the black shoulder, |
2018 | * but then we've got to guess an appropriate delay to find the vsync. |
2019 | * This might not work on every machine. |
2020 | * |
2021 | * martin_rogge @ ki.maus.de, 8th Aug 1995 |
2022 | */ |
2023 | |
2024 | #define LINE_DELAY (mono_moni ? 30 : 70) |
2025 | #define SYNC_DELAY (mono_moni ? 1500 : 2000) |
2026 | |
2027 | /* SWITCH_ACIA may be used for Falcon (ScreenBlaster III internal!) */ |
2028 | static void st_ovsc_switch(void) |
2029 | { |
2030 | unsigned long flags; |
2031 | register unsigned char old, new; |
2032 | |
2033 | if (!(atari_switches & ATARI_SWITCH_OVSC_MASK)) |
2034 | return; |
2035 | local_irq_save(flags); |
2036 | |
2037 | st_mfp.tim_ct_b = 0x10; |
2038 | st_mfp.active_edge |= 8; |
2039 | st_mfp.tim_ct_b = 0; |
2040 | st_mfp.tim_dt_b = 0xf0; |
2041 | st_mfp.tim_ct_b = 8; |
2042 | while (st_mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */ |
2043 | ; |
2044 | new = st_mfp.tim_dt_b; |
2045 | do { |
2046 | udelay(LINE_DELAY); |
2047 | old = new; |
2048 | new = st_mfp.tim_dt_b; |
2049 | } while (old != new); |
2050 | st_mfp.tim_ct_b = 0x10; |
2051 | udelay(SYNC_DELAY); |
2052 | |
2053 | if (atari_switches & ATARI_SWITCH_OVSC_IKBD) |
2054 | acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID | ACIA_RIE; |
2055 | if (atari_switches & ATARI_SWITCH_OVSC_MIDI) |
2056 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; |
2057 | if (atari_switches & (ATARI_SWITCH_OVSC_SND6|ATARI_SWITCH_OVSC_SND7)) { |
2058 | sound_ym.rd_data_reg_sel = 14; |
2059 | sound_ym.wd_data = sound_ym.rd_data_reg_sel | |
2060 | ((atari_switches & ATARI_SWITCH_OVSC_SND6) ? 0x40:0) | |
2061 | ((atari_switches & ATARI_SWITCH_OVSC_SND7) ? 0x80:0); |
2062 | } |
2063 | local_irq_restore(flags); |
2064 | } |
2065 | |
2066 | /* ------------------- External Video ---------------------- */ |
2067 | |
2068 | #ifdef ATAFB_EXT |
2069 | |
2070 | static int ext_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par) |
2071 | { |
2072 | strcpy(p: fix->id, q: "Unknown Extern" ); |
2073 | fix->smem_start = external_addr; |
2074 | fix->smem_len = PAGE_ALIGN(external_len); |
2075 | if (external_depth == 1) { |
2076 | fix->type = FB_TYPE_PACKED_PIXELS; |
2077 | /* The letters 'n' and 'i' in the "atavideo=external:" stand |
2078 | * for "normal" and "inverted", rsp., in the monochrome case */ |
2079 | fix->visual = |
2080 | (external_pmode == FB_TYPE_INTERLEAVED_PLANES || |
2081 | external_pmode == FB_TYPE_PACKED_PIXELS) ? |
2082 | FB_VISUAL_MONO10 : FB_VISUAL_MONO01; |
2083 | } else { |
2084 | /* Use STATIC if we don't know how to access color registers */ |
2085 | int visual = external_vgaiobase ? |
2086 | FB_VISUAL_PSEUDOCOLOR : |
2087 | FB_VISUAL_STATIC_PSEUDOCOLOR; |
2088 | switch (external_pmode) { |
2089 | case -1: /* truecolor */ |
2090 | fix->type = FB_TYPE_PACKED_PIXELS; |
2091 | fix->visual = FB_VISUAL_TRUECOLOR; |
2092 | break; |
2093 | case FB_TYPE_PACKED_PIXELS: |
2094 | fix->type = FB_TYPE_PACKED_PIXELS; |
2095 | fix->visual = visual; |
2096 | break; |
2097 | case FB_TYPE_PLANES: |
2098 | fix->type = FB_TYPE_PLANES; |
2099 | fix->visual = visual; |
2100 | break; |
2101 | case FB_TYPE_INTERLEAVED_PLANES: |
2102 | fix->type = FB_TYPE_INTERLEAVED_PLANES; |
2103 | fix->type_aux = 2; |
2104 | fix->visual = visual; |
2105 | break; |
2106 | } |
2107 | } |
2108 | fix->xpanstep = 0; |
2109 | fix->ypanstep = 0; |
2110 | fix->ywrapstep = 0; |
2111 | fix->line_length = par->next_line; |
2112 | return 0; |
2113 | } |
2114 | |
2115 | static int ext_decode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
2116 | { |
2117 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; |
2118 | |
2119 | if (var->bits_per_pixel > myvar->bits_per_pixel || |
2120 | var->xres > myvar->xres || |
2121 | var->xres_virtual > myvar->xres_virtual || |
2122 | var->yres > myvar->yres || |
2123 | var->xoffset > 0 || |
2124 | var->yoffset > 0) |
2125 | return -EINVAL; |
2126 | |
2127 | par->next_line = external_xres_virtual * external_depth / 8; |
2128 | return 0; |
2129 | } |
2130 | |
2131 | static int ext_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par) |
2132 | { |
2133 | memset(var, 0, sizeof(struct fb_var_screeninfo)); |
2134 | var->red.offset = 0; |
2135 | var->red.length = (external_pmode == -1) ? external_depth / 3 : |
2136 | (external_vgaiobase ? external_bitspercol : 0); |
2137 | var->red.msb_right = 0; |
2138 | var->grayscale = 0; |
2139 | |
2140 | var->pixclock = 31041; |
2141 | var->left_margin = 120; /* these are surely incorrect */ |
2142 | var->right_margin = 100; |
2143 | var->upper_margin = 8; |
2144 | var->lower_margin = 16; |
2145 | var->hsync_len = 140; |
2146 | var->vsync_len = 30; |
2147 | |
2148 | var->height = -1; |
2149 | var->width = -1; |
2150 | |
2151 | var->sync = 0; |
2152 | |
2153 | var->xres = external_xres; |
2154 | var->yres = external_yres; |
2155 | var->xres_virtual = external_xres_virtual; |
2156 | var->bits_per_pixel = external_depth; |
2157 | |
2158 | var->blue = var->green = var->red; |
2159 | var->transp.offset = 0; |
2160 | var->transp.length = 0; |
2161 | var->transp.msb_right = 0; |
2162 | var->yres_virtual = var->yres; |
2163 | var->xoffset = 0; |
2164 | var->yoffset = 0; |
2165 | var->nonstd = 0; |
2166 | var->activate = 0; |
2167 | var->vmode = FB_VMODE_NONINTERLACED; |
2168 | return 0; |
2169 | } |
2170 | |
2171 | static void ext_get_par(struct atafb_par *par) |
2172 | { |
2173 | par->screen_base = external_screen_base; |
2174 | } |
2175 | |
2176 | static void ext_set_par(struct atafb_par *par) |
2177 | { |
2178 | } |
2179 | |
2180 | #define OUTB(port,val) \ |
2181 | *((unsigned volatile char *) ((port)+external_vgaiobase)) = (val) |
2182 | #define INB(port) \ |
2183 | (*((unsigned volatile char *) ((port)+external_vgaiobase))) |
2184 | #define DACDelay \ |
2185 | do { \ |
2186 | unsigned char tmp = INB(0x3da); \ |
2187 | tmp = INB(0x3da); \ |
2188 | } while (0) |
2189 | |
2190 | static int ext_setcolreg(unsigned int regno, unsigned int red, |
2191 | unsigned int green, unsigned int blue, |
2192 | unsigned int transp, struct fb_info *info) |
2193 | { |
2194 | unsigned char colmask = (1 << external_bitspercol) - 1; |
2195 | |
2196 | if (!external_vgaiobase) |
2197 | return 1; |
2198 | |
2199 | if (regno > 255) |
2200 | return 1; |
2201 | |
2202 | red >>= 8; |
2203 | green >>= 8; |
2204 | blue >>= 8; |
2205 | |
2206 | switch (external_card_type) { |
2207 | case IS_VGA: |
2208 | OUTB(0x3c8, regno); |
2209 | DACDelay; |
2210 | OUTB(0x3c9, red & colmask); |
2211 | DACDelay; |
2212 | OUTB(0x3c9, green & colmask); |
2213 | DACDelay; |
2214 | OUTB(0x3c9, blue & colmask); |
2215 | DACDelay; |
2216 | return 0; |
2217 | |
2218 | case IS_MV300: |
2219 | OUTB((MV300_reg[regno] << 2) + 1, red); |
2220 | OUTB((MV300_reg[regno] << 2) + 1, green); |
2221 | OUTB((MV300_reg[regno] << 2) + 1, blue); |
2222 | return 0; |
2223 | |
2224 | default: |
2225 | return 1; |
2226 | } |
2227 | } |
2228 | |
2229 | static int ext_detect(void) |
2230 | { |
2231 | struct fb_var_screeninfo *myvar = &atafb_predefined[0]; |
2232 | struct atafb_par dummy_par; |
2233 | |
2234 | myvar->xres = external_xres; |
2235 | myvar->xres_virtual = external_xres_virtual; |
2236 | myvar->yres = external_yres; |
2237 | myvar->bits_per_pixel = external_depth; |
2238 | ext_encode_var(var: myvar, par: &dummy_par); |
2239 | return 1; |
2240 | } |
2241 | |
2242 | #endif /* ATAFB_EXT */ |
2243 | |
2244 | /* ------ This is the same for most hardware types -------- */ |
2245 | |
2246 | static void set_screen_base(void *s_base) |
2247 | { |
2248 | unsigned long addr; |
2249 | |
2250 | addr = atari_stram_to_phys(s_base); |
2251 | /* Setup Screen Memory */ |
2252 | shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); |
2253 | shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); |
2254 | shifter_st.bas_lo = (unsigned char)(addr & 0x0000ff); |
2255 | } |
2256 | |
2257 | static int pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
2258 | { |
2259 | struct atafb_par *par = info->par; |
2260 | |
2261 | if (!fbhw->set_screen_base || |
2262 | (!ATARIHW_PRESENT(EXTD_SHIFTER) && var->xoffset)) |
2263 | return -EINVAL; |
2264 | var->xoffset = round_up(var->xoffset, 16); |
2265 | par->screen_base = screen_base + |
2266 | (var->yoffset * info->var.xres_virtual + var->xoffset) |
2267 | * info->var.bits_per_pixel / 8; |
2268 | fbhw->set_screen_base(par->screen_base); |
2269 | return 0; |
2270 | } |
2271 | |
2272 | /* ------------ Interfaces to hardware functions ------------ */ |
2273 | |
2274 | #ifdef ATAFB_TT |
2275 | static struct fb_hwswitch tt_switch = { |
2276 | .detect = tt_detect, |
2277 | .encode_fix = tt_encode_fix, |
2278 | .decode_var = tt_decode_var, |
2279 | .encode_var = tt_encode_var, |
2280 | .get_par = tt_get_par, |
2281 | .set_par = tt_set_par, |
2282 | .set_screen_base = set_screen_base, |
2283 | .pan_display = pan_display, |
2284 | }; |
2285 | #endif |
2286 | |
2287 | #ifdef ATAFB_FALCON |
2288 | static struct fb_hwswitch falcon_switch = { |
2289 | .detect = falcon_detect, |
2290 | .encode_fix = falcon_encode_fix, |
2291 | .decode_var = falcon_decode_var, |
2292 | .encode_var = falcon_encode_var, |
2293 | .get_par = falcon_get_par, |
2294 | .set_par = falcon_set_par, |
2295 | .set_screen_base = set_screen_base, |
2296 | .blank = falcon_blank, |
2297 | .pan_display = falcon_pan_display, |
2298 | }; |
2299 | #endif |
2300 | |
2301 | #ifdef ATAFB_STE |
2302 | static struct fb_hwswitch st_switch = { |
2303 | .detect = stste_detect, |
2304 | .encode_fix = stste_encode_fix, |
2305 | .decode_var = stste_decode_var, |
2306 | .encode_var = stste_encode_var, |
2307 | .get_par = stste_get_par, |
2308 | .set_par = stste_set_par, |
2309 | .set_screen_base = stste_set_screen_base, |
2310 | .pan_display = pan_display |
2311 | }; |
2312 | #endif |
2313 | |
2314 | #ifdef ATAFB_EXT |
2315 | static struct fb_hwswitch ext_switch = { |
2316 | .detect = ext_detect, |
2317 | .encode_fix = ext_encode_fix, |
2318 | .decode_var = ext_decode_var, |
2319 | .encode_var = ext_encode_var, |
2320 | .get_par = ext_get_par, |
2321 | .set_par = ext_set_par, |
2322 | }; |
2323 | #endif |
2324 | |
2325 | static void ata_get_par(struct atafb_par *par) |
2326 | { |
2327 | if (current_par_valid) |
2328 | *par = current_par; |
2329 | else |
2330 | fbhw->get_par(par); |
2331 | } |
2332 | |
2333 | static void ata_set_par(struct atafb_par *par) |
2334 | { |
2335 | fbhw->set_par(par); |
2336 | current_par = *par; |
2337 | current_par_valid = 1; |
2338 | } |
2339 | |
2340 | |
2341 | /* =========================================================== */ |
2342 | /* ============== Hardware Independent Functions ============= */ |
2343 | /* =========================================================== */ |
2344 | |
2345 | /* used for hardware scrolling */ |
2346 | |
2347 | static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive) |
2348 | { |
2349 | int err, activate; |
2350 | struct atafb_par par; |
2351 | |
2352 | err = fbhw->decode_var(var, &par); |
2353 | if (err) |
2354 | return err; |
2355 | activate = var->activate; |
2356 | if (((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) && isactive) |
2357 | ata_set_par(par: &par); |
2358 | fbhw->encode_var(var, &par); |
2359 | var->activate = activate; |
2360 | return 0; |
2361 | } |
2362 | |
2363 | /* fbhw->encode_fix() must be called with fb_info->mm_lock held |
2364 | * if it is called after the register_framebuffer() - not a case here |
2365 | */ |
2366 | static int atafb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info) |
2367 | { |
2368 | struct atafb_par par; |
2369 | int err; |
2370 | // Get fix directly (case con == -1 before)?? |
2371 | err = fbhw->decode_var(&info->var, &par); |
2372 | if (err) |
2373 | return err; |
2374 | memset(fix, 0, sizeof(struct fb_fix_screeninfo)); |
2375 | err = fbhw->encode_fix(fix, &par); |
2376 | return err; |
2377 | } |
2378 | |
2379 | static int atafb_get_var(struct fb_var_screeninfo *var, struct fb_info *info) |
2380 | { |
2381 | struct atafb_par par; |
2382 | |
2383 | ata_get_par(par: &par); |
2384 | fbhw->encode_var(var, &par); |
2385 | |
2386 | return 0; |
2387 | } |
2388 | |
2389 | // No longer called by fbcon! |
2390 | // Still called by set_var internally |
2391 | |
2392 | static void atafb_set_disp(struct fb_info *info) |
2393 | { |
2394 | atafb_get_var(var: &info->var, info); |
2395 | atafb_get_fix(fix: &info->fix, info); |
2396 | |
2397 | /* Note: smem_start derives from phys_screen_base, not screen_base! */ |
2398 | info->screen_base = (external_addr ? external_screen_base : |
2399 | atari_stram_to_virt(info->fix.smem_start)); |
2400 | } |
2401 | |
2402 | static int |
2403 | atafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
2404 | { |
2405 | if (!fbhw->pan_display) |
2406 | return -EINVAL; |
2407 | |
2408 | return fbhw->pan_display(var, info); |
2409 | } |
2410 | |
2411 | /* |
2412 | * generic drawing routines; imageblit needs updating for image depth > 1 |
2413 | */ |
2414 | |
2415 | static void atafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
2416 | { |
2417 | struct atafb_par *par = info->par; |
2418 | int x2, y2; |
2419 | u32 width, height; |
2420 | |
2421 | if (!rect->width || !rect->height) |
2422 | return; |
2423 | |
2424 | #ifdef ATAFB_FALCON |
2425 | if (info->var.bits_per_pixel == 16) { |
2426 | cfb_fillrect(info, rect); |
2427 | return; |
2428 | } |
2429 | #endif |
2430 | |
2431 | /* |
2432 | * We could use hardware clipping but on many cards you get around |
2433 | * hardware clipping by writing to framebuffer directly. |
2434 | * */ |
2435 | x2 = rect->dx + rect->width; |
2436 | y2 = rect->dy + rect->height; |
2437 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
2438 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
2439 | width = x2 - rect->dx; |
2440 | height = y2 - rect->dy; |
2441 | |
2442 | if (info->var.bits_per_pixel == 1) |
2443 | atafb_mfb_fillrect(info, next_line: par->next_line, color: rect->color, |
2444 | sy: rect->dy, sx: rect->dx, height, width); |
2445 | else if (info->var.bits_per_pixel == 2) |
2446 | atafb_iplan2p2_fillrect(info, next_line: par->next_line, color: rect->color, |
2447 | sy: rect->dy, sx: rect->dx, height, width); |
2448 | else if (info->var.bits_per_pixel == 4) |
2449 | atafb_iplan2p4_fillrect(info, next_line: par->next_line, color: rect->color, |
2450 | sy: rect->dy, sx: rect->dx, height, width); |
2451 | else |
2452 | atafb_iplan2p8_fillrect(info, next_line: par->next_line, color: rect->color, |
2453 | sy: rect->dy, sx: rect->dx, height, width); |
2454 | |
2455 | return; |
2456 | } |
2457 | |
2458 | static void atafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
2459 | { |
2460 | struct atafb_par *par = info->par; |
2461 | int x2, y2; |
2462 | u32 dx, dy, sx, sy, width, height; |
2463 | int rev_copy = 0; |
2464 | |
2465 | #ifdef ATAFB_FALCON |
2466 | if (info->var.bits_per_pixel == 16) { |
2467 | cfb_copyarea(info, area); |
2468 | return; |
2469 | } |
2470 | #endif |
2471 | |
2472 | /* clip the destination */ |
2473 | x2 = area->dx + area->width; |
2474 | y2 = area->dy + area->height; |
2475 | dx = area->dx > 0 ? area->dx : 0; |
2476 | dy = area->dy > 0 ? area->dy : 0; |
2477 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
2478 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
2479 | width = x2 - dx; |
2480 | height = y2 - dy; |
2481 | |
2482 | if (area->sx + dx < area->dx || area->sy + dy < area->dy) |
2483 | return; |
2484 | |
2485 | /* update sx,sy */ |
2486 | sx = area->sx + (dx - area->dx); |
2487 | sy = area->sy + (dy - area->dy); |
2488 | |
2489 | /* the source must be completely inside the virtual screen */ |
2490 | if (sx + width > info->var.xres_virtual || |
2491 | sy + height > info->var.yres_virtual) |
2492 | return; |
2493 | |
2494 | if (dy > sy || (dy == sy && dx > sx)) { |
2495 | dy += height; |
2496 | sy += height; |
2497 | rev_copy = 1; |
2498 | } |
2499 | |
2500 | if (info->var.bits_per_pixel == 1) |
2501 | atafb_mfb_copyarea(info, next_line: par->next_line, sy, sx, dy, dx, height, width); |
2502 | else if (info->var.bits_per_pixel == 2) |
2503 | atafb_iplan2p2_copyarea(info, next_line: par->next_line, sy, sx, dy, dx, height, width); |
2504 | else if (info->var.bits_per_pixel == 4) |
2505 | atafb_iplan2p4_copyarea(info, next_line: par->next_line, sy, sx, dy, dx, height, width); |
2506 | else |
2507 | atafb_iplan2p8_copyarea(info, next_line: par->next_line, sy, sx, dy, dx, height, width); |
2508 | |
2509 | return; |
2510 | } |
2511 | |
2512 | static void atafb_imageblit(struct fb_info *info, const struct fb_image *image) |
2513 | { |
2514 | struct atafb_par *par = info->par; |
2515 | int x2, y2; |
2516 | const char *src; |
2517 | u32 dx, dy, width, height, pitch; |
2518 | |
2519 | #ifdef ATAFB_FALCON |
2520 | if (info->var.bits_per_pixel == 16) { |
2521 | cfb_imageblit(info, image); |
2522 | return; |
2523 | } |
2524 | #endif |
2525 | |
2526 | /* |
2527 | * We could use hardware clipping but on many cards you get around |
2528 | * hardware clipping by writing to framebuffer directly like we are |
2529 | * doing here. |
2530 | */ |
2531 | x2 = image->dx + image->width; |
2532 | y2 = image->dy + image->height; |
2533 | dx = image->dx; |
2534 | dy = image->dy; |
2535 | x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual; |
2536 | y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual; |
2537 | width = x2 - dx; |
2538 | height = y2 - dy; |
2539 | |
2540 | if (image->depth == 1) { |
2541 | // used for font data |
2542 | src = image->data; |
2543 | pitch = (image->width + 7) / 8; |
2544 | while (height--) { |
2545 | |
2546 | if (info->var.bits_per_pixel == 1) |
2547 | atafb_mfb_linefill(info, next_line: par->next_line, |
2548 | dy, dx, width, data: src, |
2549 | bgcolor: image->bg_color, fgcolor: image->fg_color); |
2550 | else if (info->var.bits_per_pixel == 2) |
2551 | atafb_iplan2p2_linefill(info, next_line: par->next_line, |
2552 | dy, dx, width, data: src, |
2553 | bgcolor: image->bg_color, fgcolor: image->fg_color); |
2554 | else if (info->var.bits_per_pixel == 4) |
2555 | atafb_iplan2p4_linefill(info, next_line: par->next_line, |
2556 | dy, dx, width, data: src, |
2557 | bgcolor: image->bg_color, fgcolor: image->fg_color); |
2558 | else |
2559 | atafb_iplan2p8_linefill(info, next_line: par->next_line, |
2560 | dy, dx, width, data: src, |
2561 | bgcolor: image->bg_color, fgcolor: image->fg_color); |
2562 | dy++; |
2563 | src += pitch; |
2564 | } |
2565 | } else { |
2566 | c2p_iplan2(dst: info->screen_base, src: image->data, dx, dy, width, |
2567 | height, dst_nextline: par->next_line, src_nextline: image->width, |
2568 | bpp: info->var.bits_per_pixel); |
2569 | } |
2570 | } |
2571 | |
2572 | static int |
2573 | atafb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
2574 | { |
2575 | switch (cmd) { |
2576 | #ifdef FBCMD_GET_CURRENTPAR |
2577 | case FBCMD_GET_CURRENTPAR: |
2578 | if (copy_to_user((void *)arg, ¤t_par, |
2579 | sizeof(struct atafb_par))) |
2580 | return -EFAULT; |
2581 | return 0; |
2582 | #endif |
2583 | #ifdef FBCMD_SET_CURRENTPAR |
2584 | case FBCMD_SET_CURRENTPAR: |
2585 | if (copy_from_user(¤t_par, (void *)arg, |
2586 | sizeof(struct atafb_par))) |
2587 | return -EFAULT; |
2588 | ata_set_par(¤t_par); |
2589 | return 0; |
2590 | #endif |
2591 | } |
2592 | return -EINVAL; |
2593 | } |
2594 | |
2595 | /* (un)blank/poweroff |
2596 | * 0 = unblank |
2597 | * 1 = blank |
2598 | * 2 = suspend vsync |
2599 | * 3 = suspend hsync |
2600 | * 4 = off |
2601 | */ |
2602 | static int atafb_blank(int blank, struct fb_info *info) |
2603 | { |
2604 | unsigned short black[16]; |
2605 | struct fb_cmap cmap; |
2606 | if (fbhw->blank && !fbhw->blank(blank)) |
2607 | return 1; |
2608 | if (blank) { |
2609 | memset(black, 0, 16 * sizeof(unsigned short)); |
2610 | cmap.red = black; |
2611 | cmap.green = black; |
2612 | cmap.blue = black; |
2613 | cmap.transp = NULL; |
2614 | cmap.start = 0; |
2615 | cmap.len = 16; |
2616 | fb_set_cmap(cmap: &cmap, fb_info: info); |
2617 | } |
2618 | #if 0 |
2619 | else |
2620 | do_install_cmap(info); |
2621 | #endif |
2622 | return 0; |
2623 | } |
2624 | |
2625 | /* |
2626 | * New fbcon interface ... |
2627 | */ |
2628 | |
2629 | /* check var by decoding var into hw par, rounding if necessary, |
2630 | * then encoding hw par back into new, validated var */ |
2631 | static int atafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
2632 | { |
2633 | int err; |
2634 | struct atafb_par par; |
2635 | |
2636 | /* Validate wanted screen parameters */ |
2637 | // if ((err = ata_decode_var(var, &par))) |
2638 | err = fbhw->decode_var(var, &par); |
2639 | if (err) |
2640 | return err; |
2641 | |
2642 | /* Encode (possibly rounded) screen parameters */ |
2643 | fbhw->encode_var(var, &par); |
2644 | return 0; |
2645 | } |
2646 | |
2647 | /* actually set hw par by decoding var, then setting hardware from |
2648 | * hw par just decoded */ |
2649 | static int atafb_set_par(struct fb_info *info) |
2650 | { |
2651 | struct atafb_par *par = info->par; |
2652 | |
2653 | /* Decode wanted screen parameters */ |
2654 | fbhw->decode_var(&info->var, par); |
2655 | mutex_lock(&info->mm_lock); |
2656 | fbhw->encode_fix(&info->fix, par); |
2657 | mutex_unlock(lock: &info->mm_lock); |
2658 | |
2659 | /* Set new videomode */ |
2660 | ata_set_par(par); |
2661 | |
2662 | return 0; |
2663 | } |
2664 | |
2665 | |
2666 | static struct fb_ops atafb_ops = { |
2667 | .owner = THIS_MODULE, |
2668 | __FB_DEFAULT_IOMEM_OPS_RDWR, |
2669 | .fb_check_var = atafb_check_var, |
2670 | .fb_set_par = atafb_set_par, |
2671 | .fb_blank = atafb_blank, |
2672 | .fb_pan_display = atafb_pan_display, |
2673 | .fb_fillrect = atafb_fillrect, |
2674 | .fb_copyarea = atafb_copyarea, |
2675 | .fb_imageblit = atafb_imageblit, |
2676 | .fb_ioctl = atafb_ioctl, |
2677 | __FB_DEFAULT_IOMEM_OPS_MMAP, |
2678 | }; |
2679 | |
2680 | static void check_default_par(int detected_mode) |
2681 | { |
2682 | char default_name[10]; |
2683 | int i; |
2684 | struct fb_var_screeninfo var; |
2685 | unsigned long min_mem; |
2686 | |
2687 | /* First try the user supplied mode */ |
2688 | if (default_par) { |
2689 | var = atafb_predefined[default_par - 1]; |
2690 | var.activate = FB_ACTIVATE_TEST; |
2691 | if (do_fb_set_var(var: &var, isactive: 1)) |
2692 | default_par = 0; /* failed */ |
2693 | } |
2694 | /* Next is the autodetected one */ |
2695 | if (!default_par) { |
2696 | var = atafb_predefined[detected_mode - 1]; /* autodetect */ |
2697 | var.activate = FB_ACTIVATE_TEST; |
2698 | if (!do_fb_set_var(var: &var, isactive: 1)) |
2699 | default_par = detected_mode; |
2700 | } |
2701 | /* If that also failed, try some default modes... */ |
2702 | if (!default_par) { |
2703 | /* try default1, default2... */ |
2704 | for (i = 1; i < 10; i++) { |
2705 | sprintf(buf: default_name,fmt: "default%d" , i); |
2706 | default_par = get_video_mode(vname: default_name); |
2707 | if (!default_par) |
2708 | panic(fmt: "can't set default video mode" ); |
2709 | var = atafb_predefined[default_par - 1]; |
2710 | var.activate = FB_ACTIVATE_TEST; |
2711 | if (!do_fb_set_var(var: &var,isactive: 1)) |
2712 | break; /* ok */ |
2713 | } |
2714 | } |
2715 | min_mem = var.xres_virtual * var.yres_virtual * var.bits_per_pixel / 8; |
2716 | if (default_mem_req < min_mem) |
2717 | default_mem_req = min_mem; |
2718 | } |
2719 | |
2720 | #ifdef ATAFB_EXT |
2721 | static void __init atafb_setup_ext(char *spec) |
2722 | { |
2723 | int xres, xres_virtual, yres, depth, planes; |
2724 | unsigned long addr, len; |
2725 | char *p; |
2726 | |
2727 | /* Format is: <xres>;<yres>;<depth>;<plane organ.>; |
2728 | * <screen mem addr> |
2729 | * [;<screen mem length>[;<vgaiobase>[;<bits-per-col>[;<colorreg-type> |
2730 | * [;<xres-virtual>]]]]] |
2731 | * |
2732 | * 09/23/97 Juergen |
2733 | * <xres_virtual>: hardware's x-resolution (f.e. ProMST) |
2734 | * |
2735 | * Even xres_virtual is available, we neither support panning nor hw-scrolling! |
2736 | */ |
2737 | p = strsep(&spec, ";" ); |
2738 | if (!p || !*p) |
2739 | return; |
2740 | xres_virtual = xres = simple_strtoul(p, NULL, 10); |
2741 | if (xres <= 0) |
2742 | return; |
2743 | |
2744 | p = strsep(&spec, ";" ); |
2745 | if (!p || !*p) |
2746 | return; |
2747 | yres = simple_strtoul(p, NULL, 10); |
2748 | if (yres <= 0) |
2749 | return; |
2750 | |
2751 | p = strsep(&spec, ";" ); |
2752 | if (!p || !*p) |
2753 | return; |
2754 | depth = simple_strtoul(p, NULL, 10); |
2755 | if (depth != 1 && depth != 2 && depth != 4 && depth != 8 && |
2756 | depth != 16 && depth != 24) |
2757 | return; |
2758 | |
2759 | p = strsep(&spec, ";" ); |
2760 | if (!p || !*p) |
2761 | return; |
2762 | if (*p == 'i') |
2763 | planes = FB_TYPE_INTERLEAVED_PLANES; |
2764 | else if (*p == 'p') |
2765 | planes = FB_TYPE_PACKED_PIXELS; |
2766 | else if (*p == 'n') |
2767 | planes = FB_TYPE_PLANES; |
2768 | else if (*p == 't') |
2769 | planes = -1; /* true color */ |
2770 | else |
2771 | return; |
2772 | |
2773 | p = strsep(&spec, ";" ); |
2774 | if (!p || !*p) |
2775 | return; |
2776 | addr = simple_strtoul(p, NULL, 0); |
2777 | |
2778 | p = strsep(&spec, ";" ); |
2779 | if (!p || !*p) |
2780 | len = xres * yres * depth / 8; |
2781 | else |
2782 | len = simple_strtoul(p, NULL, 0); |
2783 | |
2784 | p = strsep(&spec, ";" ); |
2785 | if (p && *p) |
2786 | external_vgaiobase = simple_strtoul(p, NULL, 0); |
2787 | |
2788 | p = strsep(&spec, ";" ); |
2789 | if (p && *p) { |
2790 | external_bitspercol = simple_strtoul(p, NULL, 0); |
2791 | if (external_bitspercol > 8) |
2792 | external_bitspercol = 8; |
2793 | else if (external_bitspercol < 1) |
2794 | external_bitspercol = 1; |
2795 | } |
2796 | |
2797 | p = strsep(&spec, ";" ); |
2798 | if (p && *p) { |
2799 | if (!strcmp(p, "vga" )) |
2800 | external_card_type = IS_VGA; |
2801 | if (!strcmp(p, "mv300" )) |
2802 | external_card_type = IS_MV300; |
2803 | } |
2804 | |
2805 | p = strsep(&spec, ";" ); |
2806 | if (p && *p) { |
2807 | xres_virtual = simple_strtoul(p, NULL, 10); |
2808 | if (xres_virtual < xres) |
2809 | xres_virtual = xres; |
2810 | if (xres_virtual * yres * depth / 8 > len) |
2811 | len = xres_virtual * yres * depth / 8; |
2812 | } |
2813 | |
2814 | external_xres = xres; |
2815 | external_xres_virtual = xres_virtual; |
2816 | external_yres = yres; |
2817 | external_depth = depth; |
2818 | external_pmode = planes; |
2819 | external_addr = addr; |
2820 | external_len = len; |
2821 | |
2822 | if (external_card_type == IS_MV300) { |
2823 | switch (external_depth) { |
2824 | case 1: |
2825 | MV300_reg = MV300_reg_1bit; |
2826 | break; |
2827 | case 4: |
2828 | MV300_reg = MV300_reg_4bit; |
2829 | break; |
2830 | case 8: |
2831 | MV300_reg = MV300_reg_8bit; |
2832 | break; |
2833 | } |
2834 | } |
2835 | } |
2836 | #endif /* ATAFB_EXT */ |
2837 | |
2838 | static void __init atafb_setup_int(char *spec) |
2839 | { |
2840 | /* Format to config extended internal video hardware like OverScan: |
2841 | * "internal:<xres>;<yres>;<xres_max>;<yres_max>;<offset>" |
2842 | * Explanation: |
2843 | * <xres>: x-resolution |
2844 | * <yres>: y-resolution |
2845 | * The following are only needed if you have an overscan which |
2846 | * needs a black border: |
2847 | * <xres_max>: max. length of a line in pixels your OverScan hardware would allow |
2848 | * <yres_max>: max. number of lines your OverScan hardware would allow |
2849 | * <offset>: Offset from physical beginning to visible beginning |
2850 | * of screen in bytes |
2851 | */ |
2852 | int xres; |
2853 | char *p; |
2854 | |
2855 | if (!(p = strsep(&spec, ";" )) || !*p) |
2856 | return; |
2857 | xres = simple_strtoul(p, NULL, 10); |
2858 | if (!(p = strsep(&spec, ";" )) || !*p) |
2859 | return; |
2860 | sttt_xres = xres; |
2861 | tt_yres = st_yres = simple_strtoul(p, NULL, 10); |
2862 | if ((p = strsep(&spec, ";" )) && *p) |
2863 | sttt_xres_virtual = simple_strtoul(p, NULL, 10); |
2864 | if ((p = strsep(&spec, ";" )) && *p) |
2865 | sttt_yres_virtual = simple_strtoul(p, NULL, 0); |
2866 | if ((p = strsep(&spec, ";" )) && *p) |
2867 | ovsc_offset = simple_strtoul(p, NULL, 0); |
2868 | |
2869 | if (ovsc_offset || (sttt_yres_virtual != st_yres)) |
2870 | use_hwscroll = 0; |
2871 | } |
2872 | |
2873 | #ifdef ATAFB_FALCON |
2874 | static void __init atafb_setup_mcap(char *spec) |
2875 | { |
2876 | char *p; |
2877 | int vmin, vmax, hmin, hmax; |
2878 | |
2879 | /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax> |
2880 | * <V*> vertical freq. in Hz |
2881 | * <H*> horizontal freq. in kHz |
2882 | */ |
2883 | if (!(p = strsep(&spec, ";" )) || !*p) |
2884 | return; |
2885 | vmin = simple_strtoul(p, NULL, 10); |
2886 | if (vmin <= 0) |
2887 | return; |
2888 | if (!(p = strsep(&spec, ";" )) || !*p) |
2889 | return; |
2890 | vmax = simple_strtoul(p, NULL, 10); |
2891 | if (vmax <= 0 || vmax <= vmin) |
2892 | return; |
2893 | if (!(p = strsep(&spec, ";" )) || !*p) |
2894 | return; |
2895 | hmin = 1000 * simple_strtoul(p, NULL, 10); |
2896 | if (hmin <= 0) |
2897 | return; |
2898 | if (!(p = strsep(&spec, "" )) || !*p) |
2899 | return; |
2900 | hmax = 1000 * simple_strtoul(p, NULL, 10); |
2901 | if (hmax <= 0 || hmax <= hmin) |
2902 | return; |
2903 | |
2904 | fb_info.monspecs.vfmin = vmin; |
2905 | fb_info.monspecs.vfmax = vmax; |
2906 | fb_info.monspecs.hfmin = hmin; |
2907 | fb_info.monspecs.hfmax = hmax; |
2908 | } |
2909 | #endif /* ATAFB_FALCON */ |
2910 | |
2911 | static void __init atafb_setup_user(char *spec) |
2912 | { |
2913 | /* Format of user defined video mode is: <xres>;<yres>;<depth> |
2914 | */ |
2915 | char *p; |
2916 | int xres, yres, depth, temp; |
2917 | |
2918 | p = strsep(&spec, ";" ); |
2919 | if (!p || !*p) |
2920 | return; |
2921 | xres = simple_strtoul(p, NULL, 10); |
2922 | p = strsep(&spec, ";" ); |
2923 | if (!p || !*p) |
2924 | return; |
2925 | yres = simple_strtoul(p, NULL, 10); |
2926 | p = strsep(&spec, "" ); |
2927 | if (!p || !*p) |
2928 | return; |
2929 | depth = simple_strtoul(p, NULL, 10); |
2930 | temp = get_video_mode(vname: "user0" ); |
2931 | if (temp) { |
2932 | default_par = temp; |
2933 | atafb_predefined[default_par - 1].xres = xres; |
2934 | atafb_predefined[default_par - 1].yres = yres; |
2935 | atafb_predefined[default_par - 1].bits_per_pixel = depth; |
2936 | } |
2937 | } |
2938 | |
2939 | static int __init atafb_setup(char *options) |
2940 | { |
2941 | char *this_opt; |
2942 | int temp; |
2943 | |
2944 | if (!options || !*options) |
2945 | return 0; |
2946 | |
2947 | while ((this_opt = strsep(&options, "," )) != NULL) { |
2948 | if (!*this_opt) |
2949 | continue; |
2950 | if ((temp = get_video_mode(vname: this_opt))) { |
2951 | default_par = temp; |
2952 | mode_option = this_opt; |
2953 | } else if (!strcmp(this_opt, "inverse" )) |
2954 | fb_invert_cmaps(); |
2955 | else if (!strncmp(this_opt, "hwscroll_" , 9)) { |
2956 | hwscroll = simple_strtoul(this_opt + 9, NULL, 10); |
2957 | if (hwscroll < 0) |
2958 | hwscroll = 0; |
2959 | if (hwscroll > 200) |
2960 | hwscroll = 200; |
2961 | } |
2962 | #ifdef ATAFB_EXT |
2963 | else if (!strcmp(this_opt, "mv300" )) { |
2964 | external_bitspercol = 8; |
2965 | external_card_type = IS_MV300; |
2966 | } else if (!strncmp(this_opt, "external:" , 9)) |
2967 | atafb_setup_ext(spec: this_opt + 9); |
2968 | #endif |
2969 | else if (!strncmp(this_opt, "internal:" , 9)) |
2970 | atafb_setup_int(spec: this_opt + 9); |
2971 | #ifdef ATAFB_FALCON |
2972 | else if (!strncmp(this_opt, "eclock:" , 7)) { |
2973 | fext.f = simple_strtoul(this_opt + 7, NULL, 10); |
2974 | /* external pixelclock in kHz --> ps */ |
2975 | fext.t = 1000000000 / fext.f; |
2976 | fext.f *= 1000; |
2977 | } else if (!strncmp(this_opt, "monitorcap:" , 11)) |
2978 | atafb_setup_mcap(spec: this_opt + 11); |
2979 | #endif |
2980 | else if (!strcmp(this_opt, "keep" )) |
2981 | DontCalcRes = 1; |
2982 | else if (!strncmp(this_opt, "R" , 1)) |
2983 | atafb_setup_user(spec: this_opt + 1); |
2984 | } |
2985 | return 0; |
2986 | } |
2987 | |
2988 | static int __init atafb_probe(struct platform_device *pdev) |
2989 | { |
2990 | int pad, detected_mode, error; |
2991 | unsigned int defmode = 0; |
2992 | unsigned long mem_req; |
2993 | char *option = NULL; |
2994 | |
2995 | if (fb_get_options(name: "atafb" , option: &option)) |
2996 | return -ENODEV; |
2997 | atafb_setup(options: option); |
2998 | dev_dbg(&pdev->dev, "%s: start\n" , __func__); |
2999 | |
3000 | do { |
3001 | #ifdef ATAFB_EXT |
3002 | if (external_addr) { |
3003 | dev_dbg(&pdev->dev, "initializing external hw\n" ); |
3004 | fbhw = &ext_switch; |
3005 | atafb_ops.fb_setcolreg = &ext_setcolreg; |
3006 | defmode = DEFMODE_EXT; |
3007 | break; |
3008 | } |
3009 | #endif |
3010 | #ifdef ATAFB_TT |
3011 | if (ATARIHW_PRESENT(TT_SHIFTER)) { |
3012 | dev_dbg(&pdev->dev, "initializing TT hw\n" ); |
3013 | fbhw = &tt_switch; |
3014 | atafb_ops.fb_setcolreg = &tt_setcolreg; |
3015 | defmode = DEFMODE_TT; |
3016 | break; |
3017 | } |
3018 | #endif |
3019 | #ifdef ATAFB_FALCON |
3020 | if (ATARIHW_PRESENT(VIDEL_SHIFTER)) { |
3021 | dev_dbg(&pdev->dev, "initializing Falcon hw\n" ); |
3022 | fbhw = &falcon_switch; |
3023 | atafb_ops.fb_setcolreg = &falcon_setcolreg; |
3024 | error = request_irq(IRQ_AUTO_4, falcon_vbl_switcher, 0, |
3025 | "framebuffer:modeswitch" , |
3026 | falcon_vbl_switcher); |
3027 | if (error) |
3028 | return error; |
3029 | defmode = DEFMODE_F30; |
3030 | break; |
3031 | } |
3032 | #endif |
3033 | #ifdef ATAFB_STE |
3034 | if (ATARIHW_PRESENT(STND_SHIFTER) || |
3035 | ATARIHW_PRESENT(EXTD_SHIFTER)) { |
3036 | dev_dbg(&pdev->dev, "initializing ST/E hw\n" ); |
3037 | fbhw = &st_switch; |
3038 | atafb_ops.fb_setcolreg = &stste_setcolreg; |
3039 | defmode = DEFMODE_STE; |
3040 | break; |
3041 | } |
3042 | fbhw = &st_switch; |
3043 | atafb_ops.fb_setcolreg = &stste_setcolreg; |
3044 | dev_warn(&pdev->dev, |
3045 | "Cannot determine video hardware; defaulting to ST(e)\n" ); |
3046 | #else /* ATAFB_STE */ |
3047 | /* no default driver included */ |
3048 | /* Nobody will ever see this message :-) */ |
3049 | panic("Cannot initialize video hardware" ); |
3050 | #endif |
3051 | } while (0); |
3052 | |
3053 | /* Multisync monitor capabilities */ |
3054 | /* Atari-TOS defaults if no boot option present */ |
3055 | if (fb_info.monspecs.hfmin == 0) { |
3056 | fb_info.monspecs.hfmin = 31000; |
3057 | fb_info.monspecs.hfmax = 32000; |
3058 | fb_info.monspecs.vfmin = 58; |
3059 | fb_info.monspecs.vfmax = 62; |
3060 | } |
3061 | |
3062 | detected_mode = fbhw->detect(); |
3063 | check_default_par(detected_mode); |
3064 | #ifdef ATAFB_EXT |
3065 | if (!external_addr) { |
3066 | #endif /* ATAFB_EXT */ |
3067 | mem_req = default_mem_req + ovsc_offset + ovsc_addlen; |
3068 | mem_req = PAGE_ALIGN(mem_req) + PAGE_SIZE; |
3069 | screen_base = atari_stram_alloc(mem_req, "atafb" ); |
3070 | if (!screen_base) |
3071 | panic(fmt: "Cannot allocate screen memory" ); |
3072 | memset(screen_base, 0, mem_req); |
3073 | pad = -(unsigned long)screen_base & (PAGE_SIZE - 1); |
3074 | screen_base += pad; |
3075 | phys_screen_base = atari_stram_to_phys(screen_base + ovsc_offset); |
3076 | screen_len = (mem_req - pad - ovsc_offset) & PAGE_MASK; |
3077 | st_ovsc_switch(); |
3078 | if (CPU_IS_040_OR_060) { |
3079 | /* On a '040+, the cache mode of video RAM must be set to |
3080 | * write-through also for internal video hardware! */ |
3081 | cache_push(atari_stram_to_phys(screen_base), screen_len); |
3082 | kernel_set_cachemode(screen_base, screen_len, |
3083 | IOMAP_WRITETHROUGH); |
3084 | } |
3085 | dev_info(&pdev->dev, "phys_screen_base %lx screen_len %d\n" , |
3086 | phys_screen_base, screen_len); |
3087 | #ifdef ATAFB_EXT |
3088 | } else { |
3089 | /* Map the video memory (physical address given) to somewhere |
3090 | * in the kernel address space. |
3091 | */ |
3092 | external_screen_base = ioremap_wt(offset: external_addr, size: external_len); |
3093 | if (external_vgaiobase) |
3094 | external_vgaiobase = |
3095 | (unsigned long)ioremap(offset: external_vgaiobase, size: 0x10000); |
3096 | screen_base = external_screen_base; |
3097 | phys_screen_base = external_addr; |
3098 | screen_len = external_len & PAGE_MASK; |
3099 | memset (screen_base, 0, external_len); |
3100 | } |
3101 | #endif /* ATAFB_EXT */ |
3102 | |
3103 | // strcpy(fb_info.mode->name, "Atari Builtin "); |
3104 | fb_info.fbops = &atafb_ops; |
3105 | // try to set default (detected; requested) var |
3106 | do_fb_set_var(var: &atafb_predefined[default_par - 1], isactive: 1); |
3107 | // reads hw state into current par, which may not be sane yet |
3108 | ata_get_par(par: ¤t_par); |
3109 | fb_info.par = ¤t_par; |
3110 | // tries to read from HW which may not be initialized yet |
3111 | // so set sane var first, then call atafb_set_par |
3112 | atafb_get_var(var: &fb_info.var, info: &fb_info); |
3113 | |
3114 | #ifdef ATAFB_FALCON |
3115 | fb_info.pseudo_palette = current_par.hw.falcon.pseudo_palette; |
3116 | #endif |
3117 | |
3118 | if (!fb_find_mode(var: &fb_info.var, info: &fb_info, mode_option, db: atafb_modedb, |
3119 | NUM_TOTAL_MODES, default_mode: &atafb_modedb[defmode], |
3120 | default_bpp: fb_info.var.bits_per_pixel)) { |
3121 | return -EINVAL; |
3122 | } |
3123 | |
3124 | fb_videomode_to_modelist(modedb: atafb_modedb, NUM_TOTAL_MODES, |
3125 | head: &fb_info.modelist); |
3126 | |
3127 | atafb_set_disp(info: &fb_info); |
3128 | |
3129 | fb_alloc_cmap(cmap: &(fb_info.cmap), len: 1 << fb_info.var.bits_per_pixel, transp: 0); |
3130 | |
3131 | |
3132 | dev_info(&pdev->dev, "Determined %dx%d, depth %d\n" , fb_info.var.xres, |
3133 | fb_info.var.yres, fb_info.var.bits_per_pixel); |
3134 | if ((fb_info.var.xres != fb_info.var.xres_virtual) || |
3135 | (fb_info.var.yres != fb_info.var.yres_virtual)) |
3136 | dev_info(&pdev->dev, " virtual %dx%d\n" , |
3137 | fb_info.var.xres_virtual, fb_info.var.yres_virtual); |
3138 | |
3139 | if (register_framebuffer(fb_info: &fb_info) < 0) { |
3140 | #ifdef ATAFB_EXT |
3141 | if (external_addr) { |
3142 | iounmap(addr: external_screen_base); |
3143 | external_addr = 0; |
3144 | } |
3145 | if (external_vgaiobase) { |
3146 | iounmap(addr: (void*)external_vgaiobase); |
3147 | external_vgaiobase = 0; |
3148 | } |
3149 | #endif |
3150 | return -EINVAL; |
3151 | } |
3152 | |
3153 | fb_info(&fb_info, "frame buffer device, using %dK of video memory\n" , |
3154 | screen_len >> 10); |
3155 | |
3156 | /* TODO: This driver cannot be unloaded yet */ |
3157 | return 0; |
3158 | } |
3159 | |
3160 | static void atafb_shutdown(struct platform_device *pdev) |
3161 | { |
3162 | /* Unblank before kexec */ |
3163 | if (fbhw->blank) |
3164 | fbhw->blank(0); |
3165 | } |
3166 | |
3167 | static struct platform_driver atafb_driver = { |
3168 | .shutdown = atafb_shutdown, |
3169 | .driver = { |
3170 | .name = "atafb" , |
3171 | }, |
3172 | }; |
3173 | |
3174 | static int __init atafb_init(void) |
3175 | { |
3176 | struct platform_device *pdev; |
3177 | |
3178 | if (!MACH_IS_ATARI) |
3179 | return -ENODEV; |
3180 | |
3181 | pdev = platform_device_register_simple(name: "atafb" , id: -1, NULL, num: 0); |
3182 | if (IS_ERR(ptr: pdev)) |
3183 | return PTR_ERR(ptr: pdev); |
3184 | |
3185 | return platform_driver_probe(&atafb_driver, atafb_probe); |
3186 | } |
3187 | |
3188 | device_initcall(atafb_init); |
3189 | |