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30#include <linux/export.h>
31#include <drm/drmP.h>
32#include <drm/drm_crtc.h>
33#include <drm/drm_crtc_helper.h>
34#include <drm/drm_plane_helper.h>
35#include "ast_drv.h"
36
37#include "ast_tables.h"
38
39static struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev);
40static void ast_i2c_destroy(struct ast_i2c_chan *i2c);
41static int ast_cursor_set(struct drm_crtc *crtc,
42 struct drm_file *file_priv,
43 uint32_t handle,
44 uint32_t width,
45 uint32_t height);
46static int ast_cursor_move(struct drm_crtc *crtc,
47 int x, int y);
48
49static inline void ast_load_palette_index(struct ast_private *ast,
50 u8 index, u8 red, u8 green,
51 u8 blue)
52{
53 ast_io_write8(ast, AST_IO_DAC_INDEX_WRITE, index);
54 ast_io_read8(ast, AST_IO_SEQ_PORT);
55 ast_io_write8(ast, AST_IO_DAC_DATA, red);
56 ast_io_read8(ast, AST_IO_SEQ_PORT);
57 ast_io_write8(ast, AST_IO_DAC_DATA, green);
58 ast_io_read8(ast, AST_IO_SEQ_PORT);
59 ast_io_write8(ast, AST_IO_DAC_DATA, blue);
60 ast_io_read8(ast, AST_IO_SEQ_PORT);
61}
62
63static void ast_crtc_load_lut(struct drm_crtc *crtc)
64{
65 struct ast_private *ast = crtc->dev->dev_private;
66 struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
67 int i;
68
69 if (!crtc->enabled)
70 return;
71
72 for (i = 0; i < 256; i++)
73 ast_load_palette_index(ast, i, ast_crtc->lut_r[i],
74 ast_crtc->lut_g[i], ast_crtc->lut_b[i]);
75}
76
77static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mode *mode,
78 struct drm_display_mode *adjusted_mode,
79 struct ast_vbios_mode_info *vbios_mode)
80{
81 struct ast_private *ast = crtc->dev->dev_private;
82 const struct drm_framebuffer *fb = crtc->primary->fb;
83 u32 refresh_rate_index = 0, mode_id, color_index, refresh_rate;
84 const struct ast_vbios_enhtable *best = NULL;
85 u32 hborder, vborder;
86 bool check_sync;
87
88 switch (fb->format->cpp[0] * 8) {
89 case 8:
90 vbios_mode->std_table = &vbios_stdtable[VGAModeIndex];
91 color_index = VGAModeIndex - 1;
92 break;
93 case 16:
94 vbios_mode->std_table = &vbios_stdtable[HiCModeIndex];
95 color_index = HiCModeIndex;
96 break;
97 case 24:
98 case 32:
99 vbios_mode->std_table = &vbios_stdtable[TrueCModeIndex];
100 color_index = TrueCModeIndex;
101 break;
102 default:
103 return false;
104 }
105
106 switch (crtc->mode.crtc_hdisplay) {
107 case 640:
108 vbios_mode->enh_table = &res_640x480[refresh_rate_index];
109 break;
110 case 800:
111 vbios_mode->enh_table = &res_800x600[refresh_rate_index];
112 break;
113 case 1024:
114 vbios_mode->enh_table = &res_1024x768[refresh_rate_index];
115 break;
116 case 1280:
117 if (crtc->mode.crtc_vdisplay == 800)
118 vbios_mode->enh_table = &res_1280x800[refresh_rate_index];
119 else
120 vbios_mode->enh_table = &res_1280x1024[refresh_rate_index];
121 break;
122 case 1360:
123 vbios_mode->enh_table = &res_1360x768[refresh_rate_index];
124 break;
125 case 1440:
126 vbios_mode->enh_table = &res_1440x900[refresh_rate_index];
127 break;
128 case 1600:
129 if (crtc->mode.crtc_vdisplay == 900)
130 vbios_mode->enh_table = &res_1600x900[refresh_rate_index];
131 else
132 vbios_mode->enh_table = &res_1600x1200[refresh_rate_index];
133 break;
134 case 1680:
135 vbios_mode->enh_table = &res_1680x1050[refresh_rate_index];
136 break;
137 case 1920:
138 if (crtc->mode.crtc_vdisplay == 1080)
139 vbios_mode->enh_table = &res_1920x1080[refresh_rate_index];
140 else
141 vbios_mode->enh_table = &res_1920x1200[refresh_rate_index];
142 break;
143 default:
144 return false;
145 }
146
147 refresh_rate = drm_mode_vrefresh(mode);
148 check_sync = vbios_mode->enh_table->flags & WideScreenMode;
149 do {
150 const struct ast_vbios_enhtable *loop = vbios_mode->enh_table;
151
152 while (loop->refresh_rate != 0xff) {
153 if ((check_sync) &&
154 (((mode->flags & DRM_MODE_FLAG_NVSYNC) &&
155 (loop->flags & PVSync)) ||
156 ((mode->flags & DRM_MODE_FLAG_PVSYNC) &&
157 (loop->flags & NVSync)) ||
158 ((mode->flags & DRM_MODE_FLAG_NHSYNC) &&
159 (loop->flags & PHSync)) ||
160 ((mode->flags & DRM_MODE_FLAG_PHSYNC) &&
161 (loop->flags & NHSync)))) {
162 loop++;
163 continue;
164 }
165 if (loop->refresh_rate <= refresh_rate
166 && (!best || loop->refresh_rate > best->refresh_rate))
167 best = loop;
168 loop++;
169 }
170 if (best || !check_sync)
171 break;
172 check_sync = 0;
173 } while (1);
174 if (best)
175 vbios_mode->enh_table = best;
176
177 hborder = (vbios_mode->enh_table->flags & HBorder) ? 8 : 0;
178 vborder = (vbios_mode->enh_table->flags & VBorder) ? 8 : 0;
179
180 adjusted_mode->crtc_htotal = vbios_mode->enh_table->ht;
181 adjusted_mode->crtc_hblank_start = vbios_mode->enh_table->hde + hborder;
182 adjusted_mode->crtc_hblank_end = vbios_mode->enh_table->ht - hborder;
183 adjusted_mode->crtc_hsync_start = vbios_mode->enh_table->hde + hborder +
184 vbios_mode->enh_table->hfp;
185 adjusted_mode->crtc_hsync_end = (vbios_mode->enh_table->hde + hborder +
186 vbios_mode->enh_table->hfp +
187 vbios_mode->enh_table->hsync);
188
189 adjusted_mode->crtc_vtotal = vbios_mode->enh_table->vt;
190 adjusted_mode->crtc_vblank_start = vbios_mode->enh_table->vde + vborder;
191 adjusted_mode->crtc_vblank_end = vbios_mode->enh_table->vt - vborder;
192 adjusted_mode->crtc_vsync_start = vbios_mode->enh_table->vde + vborder +
193 vbios_mode->enh_table->vfp;
194 adjusted_mode->crtc_vsync_end = (vbios_mode->enh_table->vde + vborder +
195 vbios_mode->enh_table->vfp +
196 vbios_mode->enh_table->vsync);
197
198 refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
199 mode_id = vbios_mode->enh_table->mode_id;
200
201 if (ast->chip == AST1180) {
202
203 } else {
204 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8c, (u8)((color_index & 0xf) << 4));
205 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8d, refresh_rate_index & 0xff);
206 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8e, mode_id & 0xff);
207
208 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
209 if (vbios_mode->enh_table->flags & NewModeInfo) {
210 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
211 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x92,
212 fb->format->cpp[0] * 8);
213 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x93, adjusted_mode->clock / 1000);
214 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x94, adjusted_mode->crtc_hdisplay);
215 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x95, adjusted_mode->crtc_hdisplay >> 8);
216
217 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x96, adjusted_mode->crtc_vdisplay);
218 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x97, adjusted_mode->crtc_vdisplay >> 8);
219 }
220 }
221
222 return true;
223
224
225}
226static void ast_set_std_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
227 struct ast_vbios_mode_info *vbios_mode)
228{
229 struct ast_private *ast = crtc->dev->dev_private;
230 const struct ast_vbios_stdtable *stdtable;
231 u32 i;
232 u8 jreg;
233
234 stdtable = vbios_mode->std_table;
235
236 jreg = stdtable->misc;
237 ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, jreg);
238
239
240 ast_set_index_reg(ast, AST_IO_SEQ_PORT, 0x00, 0x03);
241 for (i = 0; i < 4; i++) {
242 jreg = stdtable->seq[i];
243 if (!i)
244 jreg |= 0x20;
245 ast_set_index_reg(ast, AST_IO_SEQ_PORT, (i + 1) , jreg);
246 }
247
248
249 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
250 for (i = 0; i < 25; i++)
251 ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]);
252
253
254 jreg = ast_io_read8(ast, AST_IO_INPUT_STATUS1_READ);
255 for (i = 0; i < 20; i++) {
256 jreg = stdtable->ar[i];
257 ast_io_write8(ast, AST_IO_AR_PORT_WRITE, (u8)i);
258 ast_io_write8(ast, AST_IO_AR_PORT_WRITE, jreg);
259 }
260 ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x14);
261 ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x00);
262
263 jreg = ast_io_read8(ast, AST_IO_INPUT_STATUS1_READ);
264 ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x20);
265
266
267 for (i = 0; i < 9; i++)
268 ast_set_index_reg(ast, AST_IO_GR_PORT, i, stdtable->gr[i]);
269}
270
271static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
272 struct ast_vbios_mode_info *vbios_mode)
273{
274 struct ast_private *ast = crtc->dev->dev_private;
275 u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
276 u16 temp, precache = 0;
277
278 if ((ast->chip == AST2500) &&
279 (vbios_mode->enh_table->flags & AST2500PreCatchCRT))
280 precache = 40;
281
282 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
283
284 temp = (mode->crtc_htotal >> 3) - 5;
285 if (temp & 0x100)
286 jregAC |= 0x01;
287 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x00, 0x00, temp);
288
289 temp = (mode->crtc_hdisplay >> 3) - 1;
290 if (temp & 0x100)
291 jregAC |= 0x04;
292 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x01, 0x00, temp);
293
294 temp = (mode->crtc_hblank_start >> 3) - 1;
295 if (temp & 0x100)
296 jregAC |= 0x10;
297 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x02, 0x00, temp);
298
299 temp = ((mode->crtc_hblank_end >> 3) - 1) & 0x7f;
300 if (temp & 0x20)
301 jreg05 |= 0x80;
302 if (temp & 0x40)
303 jregAD |= 0x01;
304 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x03, 0xE0, (temp & 0x1f));
305
306 temp = ((mode->crtc_hsync_start-precache) >> 3) - 1;
307 if (temp & 0x100)
308 jregAC |= 0x40;
309 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x04, 0x00, temp);
310
311 temp = (((mode->crtc_hsync_end-precache) >> 3) - 1) & 0x3f;
312 if (temp & 0x20)
313 jregAD |= 0x04;
314 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x05, 0x60, (u8)((temp & 0x1f) | jreg05));
315
316 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAC, 0x00, jregAC);
317 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAD, 0x00, jregAD);
318
319
320 temp = (mode->crtc_vtotal) - 2;
321 if (temp & 0x100)
322 jreg07 |= 0x01;
323 if (temp & 0x200)
324 jreg07 |= 0x20;
325 if (temp & 0x400)
326 jregAE |= 0x01;
327 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x06, 0x00, temp);
328
329 temp = (mode->crtc_vsync_start) - 1;
330 if (temp & 0x100)
331 jreg07 |= 0x04;
332 if (temp & 0x200)
333 jreg07 |= 0x80;
334 if (temp & 0x400)
335 jregAE |= 0x08;
336 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x10, 0x00, temp);
337
338 temp = (mode->crtc_vsync_end - 1) & 0x3f;
339 if (temp & 0x10)
340 jregAE |= 0x20;
341 if (temp & 0x20)
342 jregAE |= 0x40;
343 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x70, temp & 0xf);
344
345 temp = mode->crtc_vdisplay - 1;
346 if (temp & 0x100)
347 jreg07 |= 0x02;
348 if (temp & 0x200)
349 jreg07 |= 0x40;
350 if (temp & 0x400)
351 jregAE |= 0x02;
352 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x12, 0x00, temp);
353
354 temp = mode->crtc_vblank_start - 1;
355 if (temp & 0x100)
356 jreg07 |= 0x08;
357 if (temp & 0x200)
358 jreg09 |= 0x20;
359 if (temp & 0x400)
360 jregAE |= 0x04;
361 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x15, 0x00, temp);
362
363 temp = mode->crtc_vblank_end - 1;
364 if (temp & 0x100)
365 jregAE |= 0x10;
366 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x16, 0x00, temp);
367
368 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x07, 0x00, jreg07);
369 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x09, 0xdf, jreg09);
370 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAE, 0x00, (jregAE | 0x80));
371
372 if (precache)
373 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x80);
374 else
375 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x00);
376
377 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x80);
378}
379
380static void ast_set_offset_reg(struct drm_crtc *crtc)
381{
382 struct ast_private *ast = crtc->dev->dev_private;
383 const struct drm_framebuffer *fb = crtc->primary->fb;
384
385 u16 offset;
386
387 offset = fb->pitches[0] >> 3;
388 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x13, (offset & 0xff));
389 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xb0, (offset >> 8) & 0x3f);
390}
391
392static void ast_set_dclk_reg(struct drm_device *dev, struct drm_display_mode *mode,
393 struct ast_vbios_mode_info *vbios_mode)
394{
395 struct ast_private *ast = dev->dev_private;
396 const struct ast_vbios_dclk_info *clk_info;
397
398 if (ast->chip == AST2500)
399 clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
400 else
401 clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
402
403 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc0, 0x00, clk_info->param1);
404 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc1, 0x00, clk_info->param2);
405 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xbb, 0x0f,
406 (clk_info->param3 & 0xc0) |
407 ((clk_info->param3 & 0x3) << 4));
408}
409
410static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
411 struct ast_vbios_mode_info *vbios_mode)
412{
413 struct ast_private *ast = crtc->dev->dev_private;
414 const struct drm_framebuffer *fb = crtc->primary->fb;
415 u8 jregA0 = 0, jregA3 = 0, jregA8 = 0;
416
417 switch (fb->format->cpp[0] * 8) {
418 case 8:
419 jregA0 = 0x70;
420 jregA3 = 0x01;
421 jregA8 = 0x00;
422 break;
423 case 15:
424 case 16:
425 jregA0 = 0x70;
426 jregA3 = 0x04;
427 jregA8 = 0x02;
428 break;
429 case 32:
430 jregA0 = 0x70;
431 jregA3 = 0x08;
432 jregA8 = 0x02;
433 break;
434 }
435
436 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa0, 0x8f, jregA0);
437 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xf0, jregA3);
438 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa8, 0xfd, jregA8);
439
440
441 if (ast->chip == AST2300 || ast->chip == AST2400 ||
442 ast->chip == AST2500) {
443 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x78);
444 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x60);
445 } else if (ast->chip == AST2100 ||
446 ast->chip == AST1100 ||
447 ast->chip == AST2200 ||
448 ast->chip == AST2150) {
449 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x3f);
450 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x2f);
451 } else {
452 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x2f);
453 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x1f);
454 }
455}
456
457static void ast_set_sync_reg(struct drm_device *dev, struct drm_display_mode *mode,
458 struct ast_vbios_mode_info *vbios_mode)
459{
460 struct ast_private *ast = dev->dev_private;
461 u8 jreg;
462
463 jreg = ast_io_read8(ast, AST_IO_MISC_PORT_READ);
464 jreg &= ~0xC0;
465 if (vbios_mode->enh_table->flags & NVSync) jreg |= 0x80;
466 if (vbios_mode->enh_table->flags & NHSync) jreg |= 0x40;
467 ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, jreg);
468}
469
470static bool ast_set_dac_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
471 struct ast_vbios_mode_info *vbios_mode)
472{
473 const struct drm_framebuffer *fb = crtc->primary->fb;
474
475 switch (fb->format->cpp[0] * 8) {
476 case 8:
477 break;
478 default:
479 return false;
480 }
481 return true;
482}
483
484static void ast_set_start_address_crt1(struct drm_crtc *crtc, unsigned offset)
485{
486 struct ast_private *ast = crtc->dev->dev_private;
487 u32 addr;
488
489 addr = offset >> 2;
490 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x0d, (u8)(addr & 0xff));
491 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x0c, (u8)((addr >> 8) & 0xff));
492 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xaf, (u8)((addr >> 16) & 0xff));
493
494}
495
496static void ast_crtc_dpms(struct drm_crtc *crtc, int mode)
497{
498 struct ast_private *ast = crtc->dev->dev_private;
499
500 if (ast->chip == AST1180)
501 return;
502
503 switch (mode) {
504 case DRM_MODE_DPMS_ON:
505 case DRM_MODE_DPMS_STANDBY:
506 case DRM_MODE_DPMS_SUSPEND:
507 ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0);
508 if (ast->tx_chip_type == AST_TX_DP501)
509 ast_set_dp501_video_output(crtc->dev, 1);
510 ast_crtc_load_lut(crtc);
511 break;
512 case DRM_MODE_DPMS_OFF:
513 if (ast->tx_chip_type == AST_TX_DP501)
514 ast_set_dp501_video_output(crtc->dev, 0);
515 ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0x20);
516 break;
517 }
518}
519
520
521static int ast_crtc_do_set_base(struct drm_crtc *crtc,
522 struct drm_framebuffer *fb,
523 int x, int y, int atomic)
524{
525 struct ast_private *ast = crtc->dev->dev_private;
526 struct drm_gem_object *obj;
527 struct ast_framebuffer *ast_fb;
528 struct ast_bo *bo;
529 int ret;
530 u64 gpu_addr;
531
532
533 if (!atomic && fb) {
534 ast_fb = to_ast_framebuffer(fb);
535 obj = ast_fb->obj;
536 bo = gem_to_ast_bo(obj);
537 ret = ast_bo_reserve(bo, false);
538 if (ret)
539 return ret;
540 ast_bo_push_sysram(bo);
541 ast_bo_unreserve(bo);
542 }
543
544 ast_fb = to_ast_framebuffer(crtc->primary->fb);
545 obj = ast_fb->obj;
546 bo = gem_to_ast_bo(obj);
547
548 ret = ast_bo_reserve(bo, false);
549 if (ret)
550 return ret;
551
552 ret = ast_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
553 if (ret) {
554 ast_bo_unreserve(bo);
555 return ret;
556 }
557
558 if (&ast->fbdev->afb == ast_fb) {
559
560 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
561 if (ret)
562 DRM_ERROR("failed to kmap fbcon\n");
563 else
564 ast_fbdev_set_base(ast, gpu_addr);
565 }
566 ast_bo_unreserve(bo);
567
568 ast_set_start_address_crt1(crtc, (u32)gpu_addr);
569
570 return 0;
571}
572
573static int ast_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
574 struct drm_framebuffer *old_fb)
575{
576 return ast_crtc_do_set_base(crtc, old_fb, x, y, 0);
577}
578
579static int ast_crtc_mode_set(struct drm_crtc *crtc,
580 struct drm_display_mode *mode,
581 struct drm_display_mode *adjusted_mode,
582 int x, int y,
583 struct drm_framebuffer *old_fb)
584{
585 struct drm_device *dev = crtc->dev;
586 struct ast_private *ast = crtc->dev->dev_private;
587 struct ast_vbios_mode_info vbios_mode;
588 bool ret;
589 if (ast->chip == AST1180) {
590 DRM_ERROR("AST 1180 modesetting not supported\n");
591 return -EINVAL;
592 }
593
594 ret = ast_get_vbios_mode_info(crtc, mode, adjusted_mode, &vbios_mode);
595 if (ret == false)
596 return -EINVAL;
597 ast_open_key(ast);
598
599 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa1, 0xff, 0x04);
600
601 ast_set_std_reg(crtc, adjusted_mode, &vbios_mode);
602 ast_set_crtc_reg(crtc, adjusted_mode, &vbios_mode);
603 ast_set_offset_reg(crtc);
604 ast_set_dclk_reg(dev, adjusted_mode, &vbios_mode);
605 ast_set_ext_reg(crtc, adjusted_mode, &vbios_mode);
606 ast_set_sync_reg(dev, adjusted_mode, &vbios_mode);
607 ast_set_dac_reg(crtc, adjusted_mode, &vbios_mode);
608
609 ast_crtc_mode_set_base(crtc, x, y, old_fb);
610
611 return 0;
612}
613
614static void ast_crtc_disable(struct drm_crtc *crtc)
615{
616
617}
618
619static void ast_crtc_prepare(struct drm_crtc *crtc)
620{
621
622}
623
624static void ast_crtc_commit(struct drm_crtc *crtc)
625{
626 struct ast_private *ast = crtc->dev->dev_private;
627 ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0);
628}
629
630
631static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
632 .dpms = ast_crtc_dpms,
633 .mode_set = ast_crtc_mode_set,
634 .mode_set_base = ast_crtc_mode_set_base,
635 .disable = ast_crtc_disable,
636 .load_lut = ast_crtc_load_lut,
637 .prepare = ast_crtc_prepare,
638 .commit = ast_crtc_commit,
639
640};
641
642static void ast_crtc_reset(struct drm_crtc *crtc)
643{
644
645}
646
647static int ast_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
648 u16 *blue, uint32_t size,
649 struct drm_modeset_acquire_ctx *ctx)
650{
651 struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
652 int i;
653
654
655 for (i = 0; i < size; i++) {
656 ast_crtc->lut_r[i] = red[i] >> 8;
657 ast_crtc->lut_g[i] = green[i] >> 8;
658 ast_crtc->lut_b[i] = blue[i] >> 8;
659 }
660 ast_crtc_load_lut(crtc);
661
662 return 0;
663}
664
665
666static void ast_crtc_destroy(struct drm_crtc *crtc)
667{
668 drm_crtc_cleanup(crtc);
669 kfree(crtc);
670}
671
672static const struct drm_crtc_funcs ast_crtc_funcs = {
673 .cursor_set = ast_cursor_set,
674 .cursor_move = ast_cursor_move,
675 .reset = ast_crtc_reset,
676 .set_config = drm_crtc_helper_set_config,
677 .gamma_set = ast_crtc_gamma_set,
678 .destroy = ast_crtc_destroy,
679};
680
681static int ast_crtc_init(struct drm_device *dev)
682{
683 struct ast_crtc *crtc;
684 int i;
685
686 crtc = kzalloc(sizeof(struct ast_crtc), GFP_KERNEL);
687 if (!crtc)
688 return -ENOMEM;
689
690 drm_crtc_init(dev, &crtc->base, &ast_crtc_funcs);
691 drm_mode_crtc_set_gamma_size(&crtc->base, 256);
692 drm_crtc_helper_add(&crtc->base, &ast_crtc_helper_funcs);
693
694 for (i = 0; i < 256; i++) {
695 crtc->lut_r[i] = i;
696 crtc->lut_g[i] = i;
697 crtc->lut_b[i] = i;
698 }
699 return 0;
700}
701
702static void ast_encoder_destroy(struct drm_encoder *encoder)
703{
704 drm_encoder_cleanup(encoder);
705 kfree(encoder);
706}
707
708
709static struct drm_encoder *ast_best_single_encoder(struct drm_connector *connector)
710{
711 int enc_id = connector->encoder_ids[0];
712
713 if (enc_id)
714 return drm_encoder_find(connector->dev, enc_id);
715 return NULL;
716}
717
718
719static const struct drm_encoder_funcs ast_enc_funcs = {
720 .destroy = ast_encoder_destroy,
721};
722
723static void ast_encoder_dpms(struct drm_encoder *encoder, int mode)
724{
725
726}
727
728static void ast_encoder_mode_set(struct drm_encoder *encoder,
729 struct drm_display_mode *mode,
730 struct drm_display_mode *adjusted_mode)
731{
732}
733
734static void ast_encoder_prepare(struct drm_encoder *encoder)
735{
736
737}
738
739static void ast_encoder_commit(struct drm_encoder *encoder)
740{
741
742}
743
744
745static const struct drm_encoder_helper_funcs ast_enc_helper_funcs = {
746 .dpms = ast_encoder_dpms,
747 .prepare = ast_encoder_prepare,
748 .commit = ast_encoder_commit,
749 .mode_set = ast_encoder_mode_set,
750};
751
752static int ast_encoder_init(struct drm_device *dev)
753{
754 struct ast_encoder *ast_encoder;
755
756 ast_encoder = kzalloc(sizeof(struct ast_encoder), GFP_KERNEL);
757 if (!ast_encoder)
758 return -ENOMEM;
759
760 drm_encoder_init(dev, &ast_encoder->base, &ast_enc_funcs,
761 DRM_MODE_ENCODER_DAC, NULL);
762 drm_encoder_helper_add(&ast_encoder->base, &ast_enc_helper_funcs);
763
764 ast_encoder->base.possible_crtcs = 1;
765 return 0;
766}
767
768static int ast_get_modes(struct drm_connector *connector)
769{
770 struct ast_connector *ast_connector = to_ast_connector(connector);
771 struct ast_private *ast = connector->dev->dev_private;
772 struct edid *edid;
773 int ret;
774 bool flags = false;
775 if (ast->tx_chip_type == AST_TX_DP501) {
776 ast->dp501_maxclk = 0xff;
777 edid = kmalloc(128, GFP_KERNEL);
778 if (!edid)
779 return -ENOMEM;
780
781 flags = ast_dp501_read_edid(connector->dev, (u8 *)edid);
782 if (flags)
783 ast->dp501_maxclk = ast_get_dp501_max_clk(connector->dev);
784 else
785 kfree(edid);
786 }
787 if (!flags)
788 edid = drm_get_edid(connector, &ast_connector->i2c->adapter);
789 if (edid) {
790 drm_mode_connector_update_edid_property(&ast_connector->base, edid);
791 ret = drm_add_edid_modes(connector, edid);
792 kfree(edid);
793 return ret;
794 } else
795 drm_mode_connector_update_edid_property(&ast_connector->base, NULL);
796 return 0;
797}
798
799static int ast_mode_valid(struct drm_connector *connector,
800 struct drm_display_mode *mode)
801{
802 struct ast_private *ast = connector->dev->dev_private;
803 int flags = MODE_NOMODE;
804 uint32_t jtemp;
805
806 if (ast->support_wide_screen) {
807 if ((mode->hdisplay == 1680) && (mode->vdisplay == 1050))
808 return MODE_OK;
809 if ((mode->hdisplay == 1280) && (mode->vdisplay == 800))
810 return MODE_OK;
811 if ((mode->hdisplay == 1440) && (mode->vdisplay == 900))
812 return MODE_OK;
813 if ((mode->hdisplay == 1360) && (mode->vdisplay == 768))
814 return MODE_OK;
815 if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
816 return MODE_OK;
817
818 if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
819 (ast->chip == AST2300) || (ast->chip == AST2400) ||
820 (ast->chip == AST2500) || (ast->chip == AST1180)) {
821 if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
822 return MODE_OK;
823
824 if ((mode->hdisplay == 1920) && (mode->vdisplay == 1200)) {
825 jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
826 if (jtemp & 0x01)
827 return MODE_NOMODE;
828 else
829 return MODE_OK;
830 }
831 }
832 }
833 switch (mode->hdisplay) {
834 case 640:
835 if (mode->vdisplay == 480) flags = MODE_OK;
836 break;
837 case 800:
838 if (mode->vdisplay == 600) flags = MODE_OK;
839 break;
840 case 1024:
841 if (mode->vdisplay == 768) flags = MODE_OK;
842 break;
843 case 1280:
844 if (mode->vdisplay == 1024) flags = MODE_OK;
845 break;
846 case 1600:
847 if (mode->vdisplay == 1200) flags = MODE_OK;
848 break;
849 default:
850 return flags;
851 }
852
853 return flags;
854}
855
856static void ast_connector_destroy(struct drm_connector *connector)
857{
858 struct ast_connector *ast_connector = to_ast_connector(connector);
859 ast_i2c_destroy(ast_connector->i2c);
860 drm_connector_unregister(connector);
861 drm_connector_cleanup(connector);
862 kfree(connector);
863}
864
865static const struct drm_connector_helper_funcs ast_connector_helper_funcs = {
866 .mode_valid = ast_mode_valid,
867 .get_modes = ast_get_modes,
868 .best_encoder = ast_best_single_encoder,
869};
870
871static const struct drm_connector_funcs ast_connector_funcs = {
872 .dpms = drm_helper_connector_dpms,
873 .fill_modes = drm_helper_probe_single_connector_modes,
874 .destroy = ast_connector_destroy,
875};
876
877static int ast_connector_init(struct drm_device *dev)
878{
879 struct ast_connector *ast_connector;
880 struct drm_connector *connector;
881 struct drm_encoder *encoder;
882
883 ast_connector = kzalloc(sizeof(struct ast_connector), GFP_KERNEL);
884 if (!ast_connector)
885 return -ENOMEM;
886
887 connector = &ast_connector->base;
888 drm_connector_init(dev, connector, &ast_connector_funcs, DRM_MODE_CONNECTOR_VGA);
889
890 drm_connector_helper_add(connector, &ast_connector_helper_funcs);
891
892 connector->interlace_allowed = 0;
893 connector->doublescan_allowed = 0;
894
895 drm_connector_register(connector);
896
897 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
898
899 encoder = list_first_entry(&dev->mode_config.encoder_list, struct drm_encoder, head);
900 drm_mode_connector_attach_encoder(connector, encoder);
901
902 ast_connector->i2c = ast_i2c_create(dev);
903 if (!ast_connector->i2c)
904 DRM_ERROR("failed to add ddc bus for connector\n");
905
906 return 0;
907}
908
909
910static int ast_cursor_init(struct drm_device *dev)
911{
912 struct ast_private *ast = dev->dev_private;
913 int size;
914 int ret;
915 struct drm_gem_object *obj;
916 struct ast_bo *bo;
917 uint64_t gpu_addr;
918
919 size = (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE) * AST_DEFAULT_HWC_NUM;
920
921 ret = ast_gem_create(dev, size, true, &obj);
922 if (ret)
923 return ret;
924 bo = gem_to_ast_bo(obj);
925 ret = ast_bo_reserve(bo, false);
926 if (unlikely(ret != 0))
927 goto fail;
928
929 ret = ast_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
930 ast_bo_unreserve(bo);
931 if (ret)
932 goto fail;
933
934
935 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &ast->cache_kmap);
936 if (ret)
937 goto fail;
938
939 ast->cursor_cache = obj;
940 ast->cursor_cache_gpu_addr = gpu_addr;
941 DRM_DEBUG_KMS("pinned cursor cache at %llx\n", ast->cursor_cache_gpu_addr);
942 return 0;
943fail:
944 return ret;
945}
946
947static void ast_cursor_fini(struct drm_device *dev)
948{
949 struct ast_private *ast = dev->dev_private;
950 ttm_bo_kunmap(&ast->cache_kmap);
951 drm_gem_object_unreference_unlocked(ast->cursor_cache);
952}
953
954int ast_mode_init(struct drm_device *dev)
955{
956 ast_cursor_init(dev);
957 ast_crtc_init(dev);
958 ast_encoder_init(dev);
959 ast_connector_init(dev);
960 return 0;
961}
962
963void ast_mode_fini(struct drm_device *dev)
964{
965 ast_cursor_fini(dev);
966}
967
968static int get_clock(void *i2c_priv)
969{
970 struct ast_i2c_chan *i2c = i2c_priv;
971 struct ast_private *ast = i2c->dev->dev_private;
972 uint32_t val;
973
974 val = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x10) >> 4;
975 return val & 1 ? 1 : 0;
976}
977
978static int get_data(void *i2c_priv)
979{
980 struct ast_i2c_chan *i2c = i2c_priv;
981 struct ast_private *ast = i2c->dev->dev_private;
982 uint32_t val;
983
984 val = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x20) >> 5;
985 return val & 1 ? 1 : 0;
986}
987
988static void set_clock(void *i2c_priv, int clock)
989{
990 struct ast_i2c_chan *i2c = i2c_priv;
991 struct ast_private *ast = i2c->dev->dev_private;
992 int i;
993 u8 ujcrb7, jtemp;
994
995 for (i = 0; i < 0x10000; i++) {
996 ujcrb7 = ((clock & 0x01) ? 0 : 1);
997 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0xfe, ujcrb7);
998 jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x01);
999 if (ujcrb7 == jtemp)
1000 break;
1001 }
1002}
1003
1004static void set_data(void *i2c_priv, int data)
1005{
1006 struct ast_i2c_chan *i2c = i2c_priv;
1007 struct ast_private *ast = i2c->dev->dev_private;
1008 int i;
1009 u8 ujcrb7, jtemp;
1010
1011 for (i = 0; i < 0x10000; i++) {
1012 ujcrb7 = ((data & 0x01) ? 0 : 1) << 2;
1013 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0xfb, ujcrb7);
1014 jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x04);
1015 if (ujcrb7 == jtemp)
1016 break;
1017 }
1018}
1019
1020static struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev)
1021{
1022 struct ast_i2c_chan *i2c;
1023 int ret;
1024
1025 i2c = kzalloc(sizeof(struct ast_i2c_chan), GFP_KERNEL);
1026 if (!i2c)
1027 return NULL;
1028
1029 i2c->adapter.owner = THIS_MODULE;
1030 i2c->adapter.class = I2C_CLASS_DDC;
1031 i2c->adapter.dev.parent = &dev->pdev->dev;
1032 i2c->dev = dev;
1033 i2c_set_adapdata(&i2c->adapter, i2c);
1034 snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
1035 "AST i2c bit bus");
1036 i2c->adapter.algo_data = &i2c->bit;
1037
1038 i2c->bit.udelay = 20;
1039 i2c->bit.timeout = 2;
1040 i2c->bit.data = i2c;
1041 i2c->bit.setsda = set_data;
1042 i2c->bit.setscl = set_clock;
1043 i2c->bit.getsda = get_data;
1044 i2c->bit.getscl = get_clock;
1045 ret = i2c_bit_add_bus(&i2c->adapter);
1046 if (ret) {
1047 DRM_ERROR("Failed to register bit i2c\n");
1048 goto out_free;
1049 }
1050
1051 return i2c;
1052out_free:
1053 kfree(i2c);
1054 return NULL;
1055}
1056
1057static void ast_i2c_destroy(struct ast_i2c_chan *i2c)
1058{
1059 if (!i2c)
1060 return;
1061 i2c_del_adapter(&i2c->adapter);
1062 kfree(i2c);
1063}
1064
1065static void ast_show_cursor(struct drm_crtc *crtc)
1066{
1067 struct ast_private *ast = crtc->dev->dev_private;
1068 u8 jreg;
1069
1070 jreg = 0x2;
1071
1072 jreg |= 1;
1073 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
1074}
1075
1076static void ast_hide_cursor(struct drm_crtc *crtc)
1077{
1078 struct ast_private *ast = crtc->dev->dev_private;
1079 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, 0x00);
1080}
1081
1082static u32 copy_cursor_image(u8 *src, u8 *dst, int width, int height)
1083{
1084 union {
1085 u32 ul;
1086 u8 b[4];
1087 } srcdata32[2], data32;
1088 union {
1089 u16 us;
1090 u8 b[2];
1091 } data16;
1092 u32 csum = 0;
1093 s32 alpha_dst_delta, last_alpha_dst_delta;
1094 u8 *srcxor, *dstxor;
1095 int i, j;
1096 u32 per_pixel_copy, two_pixel_copy;
1097
1098 alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
1099 last_alpha_dst_delta = alpha_dst_delta - (width << 1);
1100
1101 srcxor = src;
1102 dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
1103 per_pixel_copy = width & 1;
1104 two_pixel_copy = width >> 1;
1105
1106 for (j = 0; j < height; j++) {
1107 for (i = 0; i < two_pixel_copy; i++) {
1108 srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
1109 srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
1110 data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
1111 data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
1112 data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
1113 data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
1114
1115 writel(data32.ul, dstxor);
1116 csum += data32.ul;
1117
1118 dstxor += 4;
1119 srcxor += 8;
1120
1121 }
1122
1123 for (i = 0; i < per_pixel_copy; i++) {
1124 srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
1125 data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
1126 data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
1127 writew(data16.us, dstxor);
1128 csum += (u32)data16.us;
1129
1130 dstxor += 2;
1131 srcxor += 4;
1132 }
1133 dstxor += last_alpha_dst_delta;
1134 }
1135 return csum;
1136}
1137
1138static int ast_cursor_set(struct drm_crtc *crtc,
1139 struct drm_file *file_priv,
1140 uint32_t handle,
1141 uint32_t width,
1142 uint32_t height)
1143{
1144 struct ast_private *ast = crtc->dev->dev_private;
1145 struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
1146 struct drm_gem_object *obj;
1147 struct ast_bo *bo;
1148 uint64_t gpu_addr;
1149 u32 csum;
1150 int ret;
1151 struct ttm_bo_kmap_obj uobj_map;
1152 u8 *src, *dst;
1153 bool src_isiomem, dst_isiomem;
1154 if (!handle) {
1155 ast_hide_cursor(crtc);
1156 return 0;
1157 }
1158
1159 if (width > AST_MAX_HWC_WIDTH || height > AST_MAX_HWC_HEIGHT)
1160 return -EINVAL;
1161
1162 obj = drm_gem_object_lookup(file_priv, handle);
1163 if (!obj) {
1164 DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
1165 return -ENOENT;
1166 }
1167 bo = gem_to_ast_bo(obj);
1168
1169 ret = ast_bo_reserve(bo, false);
1170 if (ret)
1171 goto fail;
1172
1173 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
1174
1175 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
1176 dst = ttm_kmap_obj_virtual(&ast->cache_kmap, &dst_isiomem);
1177
1178 if (src_isiomem == true)
1179 DRM_ERROR("src cursor bo should be in main memory\n");
1180 if (dst_isiomem == false)
1181 DRM_ERROR("dst bo should be in VRAM\n");
1182
1183 dst += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor;
1184
1185
1186 csum = copy_cursor_image(src, dst, width, height);
1187
1188
1189 ttm_bo_kunmap(&uobj_map);
1190 ast_bo_unreserve(bo);
1191 {
1192 u8 *dst = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE;
1193 writel(csum, dst);
1194 writel(width, dst + AST_HWC_SIGNATURE_SizeX);
1195 writel(height, dst + AST_HWC_SIGNATURE_SizeY);
1196 writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
1197 writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
1198
1199
1200 gpu_addr = ast->cursor_cache_gpu_addr;
1201 gpu_addr += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor;
1202 gpu_addr >>= 3;
1203 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, gpu_addr & 0xff);
1204 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, (gpu_addr >> 8) & 0xff);
1205 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, (gpu_addr >> 16) & 0xff);
1206 }
1207 ast_crtc->cursor_width = width;
1208 ast_crtc->cursor_height = height;
1209 ast_crtc->offset_x = AST_MAX_HWC_WIDTH - width;
1210 ast_crtc->offset_y = AST_MAX_HWC_WIDTH - height;
1211
1212 ast->next_cursor = (ast->next_cursor + 1) % AST_DEFAULT_HWC_NUM;
1213
1214 ast_show_cursor(crtc);
1215
1216 drm_gem_object_unreference_unlocked(obj);
1217 return 0;
1218fail:
1219 drm_gem_object_unreference_unlocked(obj);
1220 return ret;
1221}
1222
1223static int ast_cursor_move(struct drm_crtc *crtc,
1224 int x, int y)
1225{
1226 struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
1227 struct ast_private *ast = crtc->dev->dev_private;
1228 int x_offset, y_offset;
1229 u8 *sig;
1230
1231 sig = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE;
1232 writel(x, sig + AST_HWC_SIGNATURE_X);
1233 writel(y, sig + AST_HWC_SIGNATURE_Y);
1234
1235 x_offset = ast_crtc->offset_x;
1236 y_offset = ast_crtc->offset_y;
1237 if (x < 0) {
1238 x_offset = (-x) + ast_crtc->offset_x;
1239 x = 0;
1240 }
1241
1242 if (y < 0) {
1243 y_offset = (-y) + ast_crtc->offset_y;
1244 y = 0;
1245 }
1246 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
1247 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
1248 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, (x & 0xff));
1249 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, ((x >> 8) & 0x0f));
1250 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, (y & 0xff));
1251 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
1252
1253
1254 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xCB, 0xFF, 0x00);
1255
1256 return 0;
1257}
1258
