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First Support on Ginger and OMAP TI
[linux-ginger.git] / drivers / gpu / drm / radeon / radeon_legacy_crtc.c
blob36410f85d7059a73830137d26a3287f51535febd
1 /*
2 * Copyright 2007-8 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: Dave Airlie
24 * Alex Deucher
25 */
26 #include <drm/drmP.h>
27 #include <drm/drm_crtc_helper.h>
28 #include <drm/radeon_drm.h>
29 #include "radeon_fixed.h"
30 #include "radeon.h"
31 #include "atom.h"
32
33 static void radeon_legacy_rmx_mode_set(struct drm_crtc *crtc,
34 struct drm_display_mode *mode,
35 struct drm_display_mode *adjusted_mode)
36 {
37 struct drm_device *dev = crtc->dev;
38 struct radeon_device *rdev = dev->dev_private;
39 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
40 int xres = mode->hdisplay;
41 int yres = mode->vdisplay;
42 bool hscale = true, vscale = true;
43 int hsync_wid;
44 int vsync_wid;
45 int hsync_start;
46 int blank_width;
47 u32 scale, inc, crtc_more_cntl;
48 u32 fp_horz_stretch, fp_vert_stretch, fp_horz_vert_active;
49 u32 fp_h_sync_strt_wid, fp_crtc_h_total_disp;
50 u32 fp_v_sync_strt_wid, fp_crtc_v_total_disp;
51 struct radeon_native_mode *native_mode = &radeon_crtc->native_mode;
52
53 fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH) &
54 (RADEON_VERT_STRETCH_RESERVED |
55 RADEON_VERT_AUTO_RATIO_INC);
56 fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH) &
57 (RADEON_HORZ_FP_LOOP_STRETCH |
58 RADEON_HORZ_AUTO_RATIO_INC);
59
60 crtc_more_cntl = 0;
61 if ((rdev->family == CHIP_RS100) ||
62 (rdev->family == CHIP_RS200)) {
63 /* This is to workaround the asic bug for RMX, some versions
64 of BIOS dosen't have this register initialized correctly. */
65 crtc_more_cntl |= RADEON_CRTC_H_CUTOFF_ACTIVE_EN;
66 }
67
68
69 fp_crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
70 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
71
72 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
73 if (!hsync_wid)
74 hsync_wid = 1;
75 hsync_start = mode->crtc_hsync_start - 8;
76
77 fp_h_sync_strt_wid = ((hsync_start & 0x1fff)
78 | ((hsync_wid & 0x3f) << 16)
79 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
80 ? RADEON_CRTC_H_SYNC_POL
81 : 0));
82
83 fp_crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
84 | ((mode->crtc_vdisplay - 1) << 16));
85
86 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
87 if (!vsync_wid)
88 vsync_wid = 1;
89
90 fp_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
91 | ((vsync_wid & 0x1f) << 16)
92 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
93 ? RADEON_CRTC_V_SYNC_POL
94 : 0));
95
96 fp_horz_vert_active = 0;
97
98 if (native_mode->panel_xres == 0 ||
99 native_mode->panel_yres == 0) {
100 hscale = false;
101 vscale = false;
102 } else {
103 if (xres > native_mode->panel_xres)
104 xres = native_mode->panel_xres;
105 if (yres > native_mode->panel_yres)
106 yres = native_mode->panel_yres;
107
108 if (xres == native_mode->panel_xres)
109 hscale = false;
110 if (yres == native_mode->panel_yres)
111 vscale = false;
112 }
113
114 switch (radeon_crtc->rmx_type) {
115 case RMX_FULL:
116 case RMX_ASPECT:
117 if (!hscale)
118 fp_horz_stretch |= ((xres/8-1) << 16);
119 else {
120 inc = (fp_horz_stretch & RADEON_HORZ_AUTO_RATIO_INC) ? 1 : 0;
121 scale = ((xres + inc) * RADEON_HORZ_STRETCH_RATIO_MAX)
122 / native_mode->panel_xres + 1;
123 fp_horz_stretch |= (((scale) & RADEON_HORZ_STRETCH_RATIO_MASK) |
124 RADEON_HORZ_STRETCH_BLEND |
125 RADEON_HORZ_STRETCH_ENABLE |
126 ((native_mode->panel_xres/8-1) << 16));
127 }
128
129 if (!vscale)
130 fp_vert_stretch |= ((yres-1) << 12);
131 else {
132 inc = (fp_vert_stretch & RADEON_VERT_AUTO_RATIO_INC) ? 1 : 0;
133 scale = ((yres + inc) * RADEON_VERT_STRETCH_RATIO_MAX)
134 / native_mode->panel_yres + 1;
135 fp_vert_stretch |= (((scale) & RADEON_VERT_STRETCH_RATIO_MASK) |
136 RADEON_VERT_STRETCH_ENABLE |
137 RADEON_VERT_STRETCH_BLEND |
138 ((native_mode->panel_yres-1) << 12));
139 }
140 break;
141 case RMX_CENTER:
142 fp_horz_stretch |= ((xres/8-1) << 16);
143 fp_vert_stretch |= ((yres-1) << 12);
144
145 crtc_more_cntl |= (RADEON_CRTC_AUTO_HORZ_CENTER_EN |
146 RADEON_CRTC_AUTO_VERT_CENTER_EN);
147
148 blank_width = (mode->crtc_hblank_end - mode->crtc_hblank_start) / 8;
149 if (blank_width > 110)
150 blank_width = 110;
151
152 fp_crtc_h_total_disp = (((blank_width) & 0x3ff)
153 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
154
155 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
156 if (!hsync_wid)
157 hsync_wid = 1;
158
159 fp_h_sync_strt_wid = ((((mode->crtc_hsync_start - mode->crtc_hblank_start) / 8) & 0x1fff)
160 | ((hsync_wid & 0x3f) << 16)
161 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
162 ? RADEON_CRTC_H_SYNC_POL
163 : 0));
164
165 fp_crtc_v_total_disp = (((mode->crtc_vblank_end - mode->crtc_vblank_start) & 0xffff)
166 | ((mode->crtc_vdisplay - 1) << 16));
167
168 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
169 if (!vsync_wid)
170 vsync_wid = 1;
171
172 fp_v_sync_strt_wid = ((((mode->crtc_vsync_start - mode->crtc_vblank_start) & 0xfff)
173 | ((vsync_wid & 0x1f) << 16)
174 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
175 ? RADEON_CRTC_V_SYNC_POL
176 : 0)));
177
178 fp_horz_vert_active = (((native_mode->panel_yres) & 0xfff) |
179 (((native_mode->panel_xres / 8) & 0x1ff) << 16));
180 break;
181 case RMX_OFF:
182 default:
183 fp_horz_stretch |= ((xres/8-1) << 16);
184 fp_vert_stretch |= ((yres-1) << 12);
185 break;
186 }
187
188 WREG32(RADEON_FP_HORZ_STRETCH, fp_horz_stretch);
189 WREG32(RADEON_FP_VERT_STRETCH, fp_vert_stretch);
190 WREG32(RADEON_CRTC_MORE_CNTL, crtc_more_cntl);
191 WREG32(RADEON_FP_HORZ_VERT_ACTIVE, fp_horz_vert_active);
192 WREG32(RADEON_FP_H_SYNC_STRT_WID, fp_h_sync_strt_wid);
193 WREG32(RADEON_FP_V_SYNC_STRT_WID, fp_v_sync_strt_wid);
194 WREG32(RADEON_FP_CRTC_H_TOTAL_DISP, fp_crtc_h_total_disp);
195 WREG32(RADEON_FP_CRTC_V_TOTAL_DISP, fp_crtc_v_total_disp);
196 }
197
198 void radeon_restore_common_regs(struct drm_device *dev)
199 {
200 /* don't need this yet */
201 }
202
203 static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev)
204 {
205 struct radeon_device *rdev = dev->dev_private;
206 int i = 0;
207
208 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
209 the cause yet, but this workaround will mask the problem for now.
210 Other chips usually will pass at the very first test, so the
211 workaround shouldn't have any effect on them. */
212 for (i = 0;
213 (i < 10000 &&
214 RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
215 i++);
216 }
217
218 static void radeon_pll_write_update(struct drm_device *dev)
219 {
220 struct radeon_device *rdev = dev->dev_private;
221
222 while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
223
224 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
225 RADEON_PPLL_ATOMIC_UPDATE_W,
226 ~(RADEON_PPLL_ATOMIC_UPDATE_W));
227 }
228
229 static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev)
230 {
231 struct radeon_device *rdev = dev->dev_private;
232 int i = 0;
233
234
235 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
236 the cause yet, but this workaround will mask the problem for now.
237 Other chips usually will pass at the very first test, so the
238 workaround shouldn't have any effect on them. */
239 for (i = 0;
240 (i < 10000 &&
241 RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
242 i++);
243 }
244
245 static void radeon_pll2_write_update(struct drm_device *dev)
246 {
247 struct radeon_device *rdev = dev->dev_private;
248
249 while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
250
251 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
252 RADEON_P2PLL_ATOMIC_UPDATE_W,
253 ~(RADEON_P2PLL_ATOMIC_UPDATE_W));
254 }
255
256 static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div,
257 uint16_t fb_div)
258 {
259 unsigned int vcoFreq;
260
261 if (!ref_div)
262 return 1;
263
264 vcoFreq = ((unsigned)ref_freq & fb_div) / ref_div;
265
266 /*
267 * This is horribly crude: the VCO frequency range is divided into
268 * 3 parts, each part having a fixed PLL gain value.
269 */
270 if (vcoFreq >= 30000)
271 /*
272 * [300..max] MHz : 7
273 */
274 return 7;
275 else if (vcoFreq >= 18000)
276 /*
277 * [180..300) MHz : 4
278 */
279 return 4;
280 else
281 /*
282 * [0..180) MHz : 1
283 */
284 return 1;
285 }
286
287 void radeon_crtc_dpms(struct drm_crtc *crtc, int mode)
288 {
289 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
290 struct drm_device *dev = crtc->dev;
291 struct radeon_device *rdev = dev->dev_private;
292 uint32_t mask;
293
294 if (radeon_crtc->crtc_id)
295 mask = (RADEON_CRTC2_EN |
296 RADEON_CRTC2_DISP_DIS |
297 RADEON_CRTC2_VSYNC_DIS |
298 RADEON_CRTC2_HSYNC_DIS |
299 RADEON_CRTC2_DISP_REQ_EN_B);
300 else
301 mask = (RADEON_CRTC_DISPLAY_DIS |
302 RADEON_CRTC_VSYNC_DIS |
303 RADEON_CRTC_HSYNC_DIS);
304
305 switch (mode) {
306 case DRM_MODE_DPMS_ON:
307 if (radeon_crtc->crtc_id)
308 WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~mask);
309 else {
310 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN |
311 RADEON_CRTC_DISP_REQ_EN_B));
312 WREG32_P(RADEON_CRTC_EXT_CNTL, 0, ~mask);
313 }
314 drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
315 radeon_crtc_load_lut(crtc);
316 break;
317 case DRM_MODE_DPMS_STANDBY:
318 case DRM_MODE_DPMS_SUSPEND:
319 case DRM_MODE_DPMS_OFF:
320 drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id);
321 if (radeon_crtc->crtc_id)
322 WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~mask);
323 else {
324 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN |
325 RADEON_CRTC_DISP_REQ_EN_B));
326 WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~mask);
327 }
328 break;
329 }
330 }
331
332 /* properly set crtc bpp when using atombios */
333 void radeon_legacy_atom_set_surface(struct drm_crtc *crtc)
334 {
335 struct drm_device *dev = crtc->dev;
336 struct radeon_device *rdev = dev->dev_private;
337 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
338 int format;
339 uint32_t crtc_gen_cntl;
340 uint32_t disp_merge_cntl;
341 uint32_t crtc_pitch;
342
343 switch (crtc->fb->bits_per_pixel) {
344 case 8:
345 format = 2;
346 break;
347 case 15: /* 555 */
348 format = 3;
349 break;
350 case 16: /* 565 */
351 format = 4;
352 break;
353 case 24: /* RGB */
354 format = 5;
355 break;
356 case 32: /* xRGB */
357 format = 6;
358 break;
359 default:
360 return;
361 }
362
363 crtc_pitch = ((((crtc->fb->pitch / (crtc->fb->bits_per_pixel / 8)) * crtc->fb->bits_per_pixel) +
364 ((crtc->fb->bits_per_pixel * 8) - 1)) /
365 (crtc->fb->bits_per_pixel * 8));
366 crtc_pitch |= crtc_pitch << 16;
367
368 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);
369
370 switch (radeon_crtc->crtc_id) {
371 case 0:
372 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
373 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
374 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
375
376 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0xfffff0ff;
377 crtc_gen_cntl |= (format << 8);
378 crtc_gen_cntl |= RADEON_CRTC_EXT_DISP_EN;
379 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);
380 break;
381 case 1:
382 disp_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
383 disp_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
384 WREG32(RADEON_DISP2_MERGE_CNTL, disp_merge_cntl);
385
386 crtc_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0xfffff0ff;
387 crtc_gen_cntl |= (format << 8);
388 WREG32(RADEON_CRTC2_GEN_CNTL, crtc_gen_cntl);
389 WREG32(RADEON_FP_H2_SYNC_STRT_WID, RREG32(RADEON_CRTC2_H_SYNC_STRT_WID));
390 WREG32(RADEON_FP_V2_SYNC_STRT_WID, RREG32(RADEON_CRTC2_V_SYNC_STRT_WID));
391 break;
392 }
393 }
394
395 int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y,
396 struct drm_framebuffer *old_fb)
397 {
398 struct drm_device *dev = crtc->dev;
399 struct radeon_device *rdev = dev->dev_private;
400 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
401 struct radeon_framebuffer *radeon_fb;
402 struct drm_gem_object *obj;
403 uint64_t base;
404 uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0;
405 uint32_t crtc_pitch, pitch_pixels;
406 uint32_t tiling_flags;
407 int format;
408 uint32_t gen_cntl_reg, gen_cntl_val;
409
410 DRM_DEBUG("\n");
411
412 radeon_fb = to_radeon_framebuffer(crtc->fb);
413
414 switch (crtc->fb->bits_per_pixel) {
415 case 8:
416 format = 2;
417 break;
418 case 15: /* 555 */
419 format = 3;
420 break;
421 case 16: /* 565 */
422 format = 4;
423 break;
424 case 24: /* RGB */
425 format = 5;
426 break;
427 case 32: /* xRGB */
428 format = 6;
429 break;
430 default:
431 return false;
432 }
433
434 obj = radeon_fb->obj;
435 if (radeon_gem_object_pin(obj, RADEON_GEM_DOMAIN_VRAM, &base)) {
436 return -EINVAL;
437 }
438 /* if scanout was in GTT this really wouldn't work */
439 /* crtc offset is from display base addr not FB location */
440 radeon_crtc->legacy_display_base_addr = rdev->mc.vram_location;
441
442 base -= radeon_crtc->legacy_display_base_addr;
443
444 crtc_offset_cntl = 0;
445
446 pitch_pixels = crtc->fb->pitch / (crtc->fb->bits_per_pixel / 8);
447 crtc_pitch = (((pitch_pixels * crtc->fb->bits_per_pixel) +
448 ((crtc->fb->bits_per_pixel * 8) - 1)) /
449 (crtc->fb->bits_per_pixel * 8));
450 crtc_pitch |= crtc_pitch << 16;
451
452 radeon_object_get_tiling_flags(obj->driver_private,
453 &tiling_flags, NULL);
454 if (tiling_flags & RADEON_TILING_MICRO)
455 DRM_ERROR("trying to scanout microtiled buffer\n");
456
457 if (tiling_flags & RADEON_TILING_MACRO) {
458 if (ASIC_IS_R300(rdev))
459 crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN |
460 R300_CRTC_MICRO_TILE_BUFFER_DIS |
461 R300_CRTC_MACRO_TILE_EN);
462 else
463 crtc_offset_cntl |= RADEON_CRTC_TILE_EN;
464 } else {
465 if (ASIC_IS_R300(rdev))
466 crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN |
467 R300_CRTC_MICRO_TILE_BUFFER_DIS |
468 R300_CRTC_MACRO_TILE_EN);
469 else
470 crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN;
471 }
472
473 if (tiling_flags & RADEON_TILING_MACRO) {
474 if (ASIC_IS_R300(rdev)) {
475 crtc_tile_x0_y0 = x | (y << 16);
476 base &= ~0x7ff;
477 } else {
478 int byteshift = crtc->fb->bits_per_pixel >> 4;
479 int tile_addr = (((y >> 3) * pitch_pixels + x) >> (8 - byteshift)) << 11;
480 base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8);
481 crtc_offset_cntl |= (y % 16);
482 }
483 } else {
484 int offset = y * pitch_pixels + x;
485 switch (crtc->fb->bits_per_pixel) {
486 case 8:
487 offset *= 1;
488 break;
489 case 15:
490 case 16:
491 offset *= 2;
492 break;
493 case 24:
494 offset *= 3;
495 break;
496 case 32:
497 offset *= 4;
498 break;
499 default:
500 return false;
501 }
502 base += offset;
503 }
504
505 base &= ~7;
506
507 if (radeon_crtc->crtc_id == 1)
508 gen_cntl_reg = RADEON_CRTC2_GEN_CNTL;
509 else
510 gen_cntl_reg = RADEON_CRTC_GEN_CNTL;
511
512 gen_cntl_val = RREG32(gen_cntl_reg);
513 gen_cntl_val &= ~(0xf << 8);
514 gen_cntl_val |= (format << 8);
515 WREG32(gen_cntl_reg, gen_cntl_val);
516
517 crtc_offset = (u32)base;
518
519 WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, radeon_crtc->legacy_display_base_addr);
520
521 if (ASIC_IS_R300(rdev)) {
522 if (radeon_crtc->crtc_id)
523 WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0);
524 else
525 WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0);
526 }
527 WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl);
528 WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset);
529 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);
530
531 if (old_fb && old_fb != crtc->fb) {
532 radeon_fb = to_radeon_framebuffer(old_fb);
533 radeon_gem_object_unpin(radeon_fb->obj);
534 }
535 return 0;
536 }
537
538 static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode)
539 {
540 struct drm_device *dev = crtc->dev;
541 struct radeon_device *rdev = dev->dev_private;
542 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
543 struct drm_encoder *encoder;
544 int format;
545 int hsync_start;
546 int hsync_wid;
547 int vsync_wid;
548 uint32_t crtc_h_total_disp;
549 uint32_t crtc_h_sync_strt_wid;
550 uint32_t crtc_v_total_disp;
551 uint32_t crtc_v_sync_strt_wid;
552 bool is_tv = false;
553
554 DRM_DEBUG("\n");
555 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
556 if (encoder->crtc == crtc) {
557 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
558 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
559 is_tv = true;
560 DRM_INFO("crtc %d is connected to a TV\n", radeon_crtc->crtc_id);
561 break;
562 }
563 }
564 }
565
566 switch (crtc->fb->bits_per_pixel) {
567 case 8:
568 format = 2;
569 break;
570 case 15: /* 555 */
571 format = 3;
572 break;
573 case 16: /* 565 */
574 format = 4;
575 break;
576 case 24: /* RGB */
577 format = 5;
578 break;
579 case 32: /* xRGB */
580 format = 6;
581 break;
582 default:
583 return false;
584 }
585
586 crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
587 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
588
589 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
590 if (!hsync_wid)
591 hsync_wid = 1;
592 hsync_start = mode->crtc_hsync_start - 8;
593
594 crtc_h_sync_strt_wid = ((hsync_start & 0x1fff)
595 | ((hsync_wid & 0x3f) << 16)
596 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
597 ? RADEON_CRTC_H_SYNC_POL
598 : 0));
599
600 /* This works for double scan mode. */
601 crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
602 | ((mode->crtc_vdisplay - 1) << 16));
603
604 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
605 if (!vsync_wid)
606 vsync_wid = 1;
607
608 crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
609 | ((vsync_wid & 0x1f) << 16)
610 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
611 ? RADEON_CRTC_V_SYNC_POL
612 : 0));
613
614 /* TODO -> Dell Server */
615 if (0) {
616 uint32_t disp_hw_debug = RREG32(RADEON_DISP_HW_DEBUG);
617 uint32_t tv_dac_cntl = RREG32(RADEON_TV_DAC_CNTL);
618 uint32_t dac2_cntl = RREG32(RADEON_DAC_CNTL2);
619 uint32_t crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL);
620
621 dac2_cntl &= ~RADEON_DAC2_DAC_CLK_SEL;
622 dac2_cntl |= RADEON_DAC2_DAC2_CLK_SEL;
623
624 /* For CRT on DAC2, don't turn it on if BIOS didn't
625 enable it, even it's detected.
626 */
627 disp_hw_debug |= RADEON_CRT2_DISP1_SEL;
628 tv_dac_cntl &= ~((1<<2) | (3<<8) | (7<<24) | (0xff<<16));
629 tv_dac_cntl |= (0x03 | (2<<8) | (0x58<<16));
630
631 WREG32(RADEON_TV_DAC_CNTL, tv_dac_cntl);
632 WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug);
633 WREG32(RADEON_DAC_CNTL2, dac2_cntl);
634 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);
635 }
636
637 if (radeon_crtc->crtc_id) {
638 uint32_t crtc2_gen_cntl;
639 uint32_t disp2_merge_cntl;
640
641 /* check to see if TV DAC is enabled for another crtc and keep it enabled */
642 if (RREG32(RADEON_CRTC2_GEN_CNTL) & RADEON_CRTC2_CRT2_ON)
643 crtc2_gen_cntl = RADEON_CRTC2_CRT2_ON;
644 else
645 crtc2_gen_cntl = 0;
646
647 crtc2_gen_cntl |= ((format << 8)
648 | RADEON_CRTC2_VSYNC_DIS
649 | RADEON_CRTC2_HSYNC_DIS
650 | RADEON_CRTC2_DISP_DIS
651 | RADEON_CRTC2_DISP_REQ_EN_B
652 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
653 ? RADEON_CRTC2_DBL_SCAN_EN
654 : 0)
655 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
656 ? RADEON_CRTC2_CSYNC_EN
657 : 0)
658 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
659 ? RADEON_CRTC2_INTERLACE_EN
660 : 0));
661
662 disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
663 disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
664
665 WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl);
666 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);
667 } else {
668 uint32_t crtc_gen_cntl;
669 uint32_t crtc_ext_cntl;
670 uint32_t disp_merge_cntl;
671
672 crtc_gen_cntl = (RADEON_CRTC_EXT_DISP_EN
673 | (format << 8)
674 | RADEON_CRTC_DISP_REQ_EN_B
675 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
676 ? RADEON_CRTC_DBL_SCAN_EN
677 : 0)
678 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
679 ? RADEON_CRTC_CSYNC_EN
680 : 0)
681 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
682 ? RADEON_CRTC_INTERLACE_EN
683 : 0));
684
685 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);
686 crtc_ext_cntl |= (RADEON_XCRT_CNT_EN |
687 RADEON_CRTC_VSYNC_DIS |
688 RADEON_CRTC_HSYNC_DIS |
689 RADEON_CRTC_DISPLAY_DIS);
690
691 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
692 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
693
694 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
695 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);
696 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl);
697 }
698
699 if (is_tv)
700 radeon_legacy_tv_adjust_crtc_reg(encoder, &crtc_h_total_disp,
701 &crtc_h_sync_strt_wid, &crtc_v_total_disp,
702 &crtc_v_sync_strt_wid);
703
704 WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp);
705 WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid);
706 WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp);
707 WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid);
708
709 return true;
710 }
711
712 static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
713 {
714 struct drm_device *dev = crtc->dev;
715 struct radeon_device *rdev = dev->dev_private;
716 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
717 struct drm_encoder *encoder;
718 uint32_t feedback_div = 0;
719 uint32_t frac_fb_div = 0;
720 uint32_t reference_div = 0;
721 uint32_t post_divider = 0;
722 uint32_t freq = 0;
723 uint8_t pll_gain;
724 int pll_flags = RADEON_PLL_LEGACY;
725 bool use_bios_divs = false;
726 /* PLL registers */
727 uint32_t pll_ref_div = 0;
728 uint32_t pll_fb_post_div = 0;
729 uint32_t htotal_cntl = 0;
730 bool is_tv = false;
731 struct radeon_pll *pll;
732
733 struct {
734 int divider;
735 int bitvalue;
736 } *post_div, post_divs[] = {
737 /* From RAGE 128 VR/RAGE 128 GL Register
738 * Reference Manual (Technical Reference
739 * Manual P/N RRG-G04100-C Rev. 0.04), page
740 * 3-17 (PLL_DIV_[3:0]).
741 */
742 { 1, 0 }, /* VCLK_SRC */
743 { 2, 1 }, /* VCLK_SRC/2 */
744 { 4, 2 }, /* VCLK_SRC/4 */
745 { 8, 3 }, /* VCLK_SRC/8 */
746 { 3, 4 }, /* VCLK_SRC/3 */
747 { 16, 5 }, /* VCLK_SRC/16 */
748 { 6, 6 }, /* VCLK_SRC/6 */
749 { 12, 7 }, /* VCLK_SRC/12 */
750 { 0, 0 }
751 };
752
753 if (radeon_crtc->crtc_id)
754 pll = &rdev->clock.p2pll;
755 else
756 pll = &rdev->clock.p1pll;
757
758 if (mode->clock > 200000) /* range limits??? */
759 pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
760 else
761 pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
762
763 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
764 if (encoder->crtc == crtc) {
765 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
766
767 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
768 is_tv = true;
769 break;
770 }
771
772 if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
773 pll_flags |= RADEON_PLL_NO_ODD_POST_DIV;
774 if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) {
775 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
776 struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv;
777 if (lvds) {
778 if (lvds->use_bios_dividers) {
779 pll_ref_div = lvds->panel_ref_divider;
780 pll_fb_post_div = (lvds->panel_fb_divider |
781 (lvds->panel_post_divider << 16));
782 htotal_cntl = 0;
783 use_bios_divs = true;
784 }
785 }
786 pll_flags |= RADEON_PLL_USE_REF_DIV;
787 }
788 }
789 }
790
791 DRM_DEBUG("\n");
792
793 if (!use_bios_divs) {
794 radeon_compute_pll(pll, mode->clock,
795 &freq, &feedback_div, &frac_fb_div,
796 &reference_div, &post_divider,
797 pll_flags);
798
799 for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
800 if (post_div->divider == post_divider)
801 break;
802 }
803
804 if (!post_div->divider)
805 post_div = &post_divs[0];
806
807 DRM_DEBUG("dc=%u, fd=%d, rd=%d, pd=%d\n",
808 (unsigned)freq,
809 feedback_div,
810 reference_div,
811 post_divider);
812
813 pll_ref_div = reference_div;
814 #if defined(__powerpc__) && (0) /* TODO */
815 /* apparently programming this otherwise causes a hang??? */
816 if (info->MacModel == RADEON_MAC_IBOOK)
817 pll_fb_post_div = 0x000600ad;
818 else
819 #endif
820 pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16));
821
822 htotal_cntl = mode->htotal & 0x7;
823
824 }
825
826 pll_gain = radeon_compute_pll_gain(pll->reference_freq,
827 pll_ref_div & 0x3ff,
828 pll_fb_post_div & 0x7ff);
829
830 if (radeon_crtc->crtc_id) {
831 uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) &
832 ~(RADEON_PIX2CLK_SRC_SEL_MASK)) |
833 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK);
834
835 if (is_tv) {
836 radeon_legacy_tv_adjust_pll2(encoder, &htotal_cntl,
837 &pll_ref_div, &pll_fb_post_div,
838 &pixclks_cntl);
839 }
840
841 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
842 RADEON_PIX2CLK_SRC_SEL_CPUCLK,
843 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
844
845 WREG32_PLL_P(RADEON_P2PLL_CNTL,
846 RADEON_P2PLL_RESET
847 | RADEON_P2PLL_ATOMIC_UPDATE_EN
848 | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT),
849 ~(RADEON_P2PLL_RESET
850 | RADEON_P2PLL_ATOMIC_UPDATE_EN
851 | RADEON_P2PLL_PVG_MASK));
852
853 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
854 pll_ref_div,
855 ~RADEON_P2PLL_REF_DIV_MASK);
856
857 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
858 pll_fb_post_div,
859 ~RADEON_P2PLL_FB0_DIV_MASK);
860
861 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
862 pll_fb_post_div,
863 ~RADEON_P2PLL_POST0_DIV_MASK);
864
865 radeon_pll2_write_update(dev);
866 radeon_pll2_wait_for_read_update_complete(dev);
867
868 WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl);
869
870 WREG32_PLL_P(RADEON_P2PLL_CNTL,
871 0,
872 ~(RADEON_P2PLL_RESET
873 | RADEON_P2PLL_SLEEP
874 | RADEON_P2PLL_ATOMIC_UPDATE_EN));
875
876 DRM_DEBUG("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
877 (unsigned)pll_ref_div,
878 (unsigned)pll_fb_post_div,
879 (unsigned)htotal_cntl,
880 RREG32_PLL(RADEON_P2PLL_CNTL));
881 DRM_DEBUG("Wrote2: rd=%u, fd=%u, pd=%u\n",
882 (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK,
883 (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK,
884 (unsigned)((pll_fb_post_div &
885 RADEON_P2PLL_POST0_DIV_MASK) >> 16));
886
887 mdelay(50); /* Let the clock to lock */
888
889 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
890 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
891 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
892
893 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
894 } else {
895 uint32_t pixclks_cntl;
896
897
898 if (is_tv) {
899 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);
900 radeon_legacy_tv_adjust_pll1(encoder, &htotal_cntl, &pll_ref_div,
901 &pll_fb_post_div, &pixclks_cntl);
902 }
903
904 if (rdev->flags & RADEON_IS_MOBILITY) {
905 /* A temporal workaround for the occational blanking on certain laptop panels.
906 This appears to related to the PLL divider registers (fail to lock?).
907 It occurs even when all dividers are the same with their old settings.
908 In this case we really don't need to fiddle with PLL registers.
909 By doing this we can avoid the blanking problem with some panels.
910 */
911 if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) &&
912 (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) &
913 (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) {
914 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
915 RADEON_PLL_DIV_SEL,
916 ~(RADEON_PLL_DIV_SEL));
917 r100_pll_errata_after_index(rdev);
918 return;
919 }
920 }
921
922 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
923 RADEON_VCLK_SRC_SEL_CPUCLK,
924 ~(RADEON_VCLK_SRC_SEL_MASK));
925 WREG32_PLL_P(RADEON_PPLL_CNTL,
926 RADEON_PPLL_RESET
927 | RADEON_PPLL_ATOMIC_UPDATE_EN
928 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
929 | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT),
930 ~(RADEON_PPLL_RESET
931 | RADEON_PPLL_ATOMIC_UPDATE_EN
932 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
933 | RADEON_PPLL_PVG_MASK));
934
935 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
936 RADEON_PLL_DIV_SEL,
937 ~(RADEON_PLL_DIV_SEL));
938 r100_pll_errata_after_index(rdev);
939
940 if (ASIC_IS_R300(rdev) ||
941 (rdev->family == CHIP_RS300) ||
942 (rdev->family == CHIP_RS400) ||
943 (rdev->family == CHIP_RS480)) {
944 if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
945 /* When restoring console mode, use saved PPLL_REF_DIV
946 * setting.
947 */
948 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
949 pll_ref_div,
950 0);
951 } else {
952 /* R300 uses ref_div_acc field as real ref divider */
953 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
954 (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
955 ~R300_PPLL_REF_DIV_ACC_MASK);
956 }
957 } else
958 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
959 pll_ref_div,
960 ~RADEON_PPLL_REF_DIV_MASK);
961
962 WREG32_PLL_P(RADEON_PPLL_DIV_3,
963 pll_fb_post_div,
964 ~RADEON_PPLL_FB3_DIV_MASK);
965
966 WREG32_PLL_P(RADEON_PPLL_DIV_3,
967 pll_fb_post_div,
968 ~RADEON_PPLL_POST3_DIV_MASK);
969
970 radeon_pll_write_update(dev);
971 radeon_pll_wait_for_read_update_complete(dev);
972
973 WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl);
974
975 WREG32_PLL_P(RADEON_PPLL_CNTL,
976 0,
977 ~(RADEON_PPLL_RESET
978 | RADEON_PPLL_SLEEP
979 | RADEON_PPLL_ATOMIC_UPDATE_EN
980 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN));
981
982 DRM_DEBUG("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
983 pll_ref_div,
984 pll_fb_post_div,
985 (unsigned)htotal_cntl,
986 RREG32_PLL(RADEON_PPLL_CNTL));
987 DRM_DEBUG("Wrote: rd=%d, fd=%d, pd=%d\n",
988 pll_ref_div & RADEON_PPLL_REF_DIV_MASK,
989 pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK,
990 (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16);
991
992 mdelay(50); /* Let the clock to lock */
993
994 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
995 RADEON_VCLK_SRC_SEL_PPLLCLK,
996 ~(RADEON_VCLK_SRC_SEL_MASK));
997
998 if (is_tv)
999 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
1000 }
1001 }
1002
1003 static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc,
1004 struct drm_display_mode *mode,
1005 struct drm_display_mode *adjusted_mode)
1006 {
1007 if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
1008 return false;
1009 return true;
1010 }
1011
1012 static int radeon_crtc_mode_set(struct drm_crtc *crtc,
1013 struct drm_display_mode *mode,
1014 struct drm_display_mode *adjusted_mode,
1015 int x, int y, struct drm_framebuffer *old_fb)
1016 {
1017 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1018 struct drm_device *dev = crtc->dev;
1019 struct radeon_device *rdev = dev->dev_private;
1020
1021 /* TODO TV */
1022 radeon_crtc_set_base(crtc, x, y, old_fb);
1023 radeon_set_crtc_timing(crtc, adjusted_mode);
1024 radeon_set_pll(crtc, adjusted_mode);
1025 radeon_bandwidth_update(rdev);
1026 if (radeon_crtc->crtc_id == 0) {
1027 radeon_legacy_rmx_mode_set(crtc, mode, adjusted_mode);
1028 } else {
1029 if (radeon_crtc->rmx_type != RMX_OFF) {
1030 /* FIXME: only first crtc has rmx what should we
1031 * do ?
1032 */
1033 DRM_ERROR("Mode need scaling but only first crtc can do that.\n");
1034 }
1035 }
1036 return 0;
1037 }
1038
1039 static void radeon_crtc_prepare(struct drm_crtc *crtc)
1040 {
1041 radeon_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
1042 }
1043
1044 static void radeon_crtc_commit(struct drm_crtc *crtc)
1045 {
1046 radeon_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
1047 }
1048
1049 static const struct drm_crtc_helper_funcs legacy_helper_funcs = {
1050 .dpms = radeon_crtc_dpms,
1051 .mode_fixup = radeon_crtc_mode_fixup,
1052 .mode_set = radeon_crtc_mode_set,
1053 .mode_set_base = radeon_crtc_set_base,
1054 .prepare = radeon_crtc_prepare,
1055 .commit = radeon_crtc_commit,
1056 .load_lut = radeon_crtc_load_lut,
1057 };
1058
1059
1060 void radeon_legacy_init_crtc(struct drm_device *dev,
1061 struct radeon_crtc *radeon_crtc)
1062 {
1063 if (radeon_crtc->crtc_id == 1)
1064 radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP;
1065 drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs);
1066 }
Linux for Ginger Game Console