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