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drm/radeon/kms: add new pll algo for avivo asics
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / gpu / drm / radeon / radeon_legacy_crtc.c
blobcf0638c3b7c70df070ff10fa11b7a914115689fc
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 <drm/drm_fixed.h>
30 #include "radeon.h"
31 #include "atom.h"
32
33 static void radeon_overscan_setup(struct drm_crtc *crtc,
34 struct drm_display_mode *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
40 WREG32(RADEON_OVR_CLR + radeon_crtc->crtc_offset, 0);
41 WREG32(RADEON_OVR_WID_LEFT_RIGHT + radeon_crtc->crtc_offset, 0);
42 WREG32(RADEON_OVR_WID_TOP_BOTTOM + radeon_crtc->crtc_offset, 0);
43 }
44
45 static void radeon_legacy_rmx_mode_set(struct drm_crtc *crtc,
46 struct drm_display_mode *mode)
47 {
48 struct drm_device *dev = crtc->dev;
49 struct radeon_device *rdev = dev->dev_private;
50 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
51 int xres = mode->hdisplay;
52 int yres = mode->vdisplay;
53 bool hscale = true, vscale = true;
54 int hsync_wid;
55 int vsync_wid;
56 int hsync_start;
57 int blank_width;
58 u32 scale, inc, crtc_more_cntl;
59 u32 fp_horz_stretch, fp_vert_stretch, fp_horz_vert_active;
60 u32 fp_h_sync_strt_wid, fp_crtc_h_total_disp;
61 u32 fp_v_sync_strt_wid, fp_crtc_v_total_disp;
62 struct drm_display_mode *native_mode = &radeon_crtc->native_mode;
63
64 fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH) &
65 (RADEON_VERT_STRETCH_RESERVED |
66 RADEON_VERT_AUTO_RATIO_INC);
67 fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH) &
68 (RADEON_HORZ_FP_LOOP_STRETCH |
69 RADEON_HORZ_AUTO_RATIO_INC);
70
71 crtc_more_cntl = 0;
72 if ((rdev->family == CHIP_RS100) ||
73 (rdev->family == CHIP_RS200)) {
74 /* This is to workaround the asic bug for RMX, some versions
75 of BIOS dosen't have this register initialized correctly. */
76 crtc_more_cntl |= RADEON_CRTC_H_CUTOFF_ACTIVE_EN;
77 }
78
79
80 fp_crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
81 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
82
83 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
84 if (!hsync_wid)
85 hsync_wid = 1;
86 hsync_start = mode->crtc_hsync_start - 8;
87
88 fp_h_sync_strt_wid = ((hsync_start & 0x1fff)
89 | ((hsync_wid & 0x3f) << 16)
90 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
91 ? RADEON_CRTC_H_SYNC_POL
92 : 0));
93
94 fp_crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
95 | ((mode->crtc_vdisplay - 1) << 16));
96
97 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
98 if (!vsync_wid)
99 vsync_wid = 1;
100
101 fp_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
102 | ((vsync_wid & 0x1f) << 16)
103 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
104 ? RADEON_CRTC_V_SYNC_POL
105 : 0));
106
107 fp_horz_vert_active = 0;
108
109 if (native_mode->hdisplay == 0 ||
110 native_mode->vdisplay == 0) {
111 hscale = false;
112 vscale = false;
113 } else {
114 if (xres > native_mode->hdisplay)
115 xres = native_mode->hdisplay;
116 if (yres > native_mode->vdisplay)
117 yres = native_mode->vdisplay;
118
119 if (xres == native_mode->hdisplay)
120 hscale = false;
121 if (yres == native_mode->vdisplay)
122 vscale = false;
123 }
124
125 switch (radeon_crtc->rmx_type) {
126 case RMX_FULL:
127 case RMX_ASPECT:
128 if (!hscale)
129 fp_horz_stretch |= ((xres/8-1) << 16);
130 else {
131 inc = (fp_horz_stretch & RADEON_HORZ_AUTO_RATIO_INC) ? 1 : 0;
132 scale = ((xres + inc) * RADEON_HORZ_STRETCH_RATIO_MAX)
133 / native_mode->hdisplay + 1;
134 fp_horz_stretch |= (((scale) & RADEON_HORZ_STRETCH_RATIO_MASK) |
135 RADEON_HORZ_STRETCH_BLEND |
136 RADEON_HORZ_STRETCH_ENABLE |
137 ((native_mode->hdisplay/8-1) << 16));
138 }
139
140 if (!vscale)
141 fp_vert_stretch |= ((yres-1) << 12);
142 else {
143 inc = (fp_vert_stretch & RADEON_VERT_AUTO_RATIO_INC) ? 1 : 0;
144 scale = ((yres + inc) * RADEON_VERT_STRETCH_RATIO_MAX)
145 / native_mode->vdisplay + 1;
146 fp_vert_stretch |= (((scale) & RADEON_VERT_STRETCH_RATIO_MASK) |
147 RADEON_VERT_STRETCH_ENABLE |
148 RADEON_VERT_STRETCH_BLEND |
149 ((native_mode->vdisplay-1) << 12));
150 }
151 break;
152 case RMX_CENTER:
153 fp_horz_stretch |= ((xres/8-1) << 16);
154 fp_vert_stretch |= ((yres-1) << 12);
155
156 crtc_more_cntl |= (RADEON_CRTC_AUTO_HORZ_CENTER_EN |
157 RADEON_CRTC_AUTO_VERT_CENTER_EN);
158
159 blank_width = (mode->crtc_hblank_end - mode->crtc_hblank_start) / 8;
160 if (blank_width > 110)
161 blank_width = 110;
162
163 fp_crtc_h_total_disp = (((blank_width) & 0x3ff)
164 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
165
166 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
167 if (!hsync_wid)
168 hsync_wid = 1;
169
170 fp_h_sync_strt_wid = ((((mode->crtc_hsync_start - mode->crtc_hblank_start) / 8) & 0x1fff)
171 | ((hsync_wid & 0x3f) << 16)
172 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
173 ? RADEON_CRTC_H_SYNC_POL
174 : 0));
175
176 fp_crtc_v_total_disp = (((mode->crtc_vblank_end - mode->crtc_vblank_start) & 0xffff)
177 | ((mode->crtc_vdisplay - 1) << 16));
178
179 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
180 if (!vsync_wid)
181 vsync_wid = 1;
182
183 fp_v_sync_strt_wid = ((((mode->crtc_vsync_start - mode->crtc_vblank_start) & 0xfff)
184 | ((vsync_wid & 0x1f) << 16)
185 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
186 ? RADEON_CRTC_V_SYNC_POL
187 : 0)));
188
189 fp_horz_vert_active = (((native_mode->vdisplay) & 0xfff) |
190 (((native_mode->hdisplay / 8) & 0x1ff) << 16));
191 break;
192 case RMX_OFF:
193 default:
194 fp_horz_stretch |= ((xres/8-1) << 16);
195 fp_vert_stretch |= ((yres-1) << 12);
196 break;
197 }
198
199 WREG32(RADEON_FP_HORZ_STRETCH, fp_horz_stretch);
200 WREG32(RADEON_FP_VERT_STRETCH, fp_vert_stretch);
201 WREG32(RADEON_CRTC_MORE_CNTL, crtc_more_cntl);
202 WREG32(RADEON_FP_HORZ_VERT_ACTIVE, fp_horz_vert_active);
203 WREG32(RADEON_FP_H_SYNC_STRT_WID, fp_h_sync_strt_wid);
204 WREG32(RADEON_FP_V_SYNC_STRT_WID, fp_v_sync_strt_wid);
205 WREG32(RADEON_FP_CRTC_H_TOTAL_DISP, fp_crtc_h_total_disp);
206 WREG32(RADEON_FP_CRTC_V_TOTAL_DISP, fp_crtc_v_total_disp);
207 }
208
209 void radeon_restore_common_regs(struct drm_device *dev)
210 {
211 /* don't need this yet */
212 }
213
214 static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev)
215 {
216 struct radeon_device *rdev = dev->dev_private;
217 int i = 0;
218
219 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
220 the cause yet, but this workaround will mask the problem for now.
221 Other chips usually will pass at the very first test, so the
222 workaround shouldn't have any effect on them. */
223 for (i = 0;
224 (i < 10000 &&
225 RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
226 i++);
227 }
228
229 static void radeon_pll_write_update(struct drm_device *dev)
230 {
231 struct radeon_device *rdev = dev->dev_private;
232
233 while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
234
235 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
236 RADEON_PPLL_ATOMIC_UPDATE_W,
237 ~(RADEON_PPLL_ATOMIC_UPDATE_W));
238 }
239
240 static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev)
241 {
242 struct radeon_device *rdev = dev->dev_private;
243 int i = 0;
244
245
246 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
247 the cause yet, but this workaround will mask the problem for now.
248 Other chips usually will pass at the very first test, so the
249 workaround shouldn't have any effect on them. */
250 for (i = 0;
251 (i < 10000 &&
252 RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
253 i++);
254 }
255
256 static void radeon_pll2_write_update(struct drm_device *dev)
257 {
258 struct radeon_device *rdev = dev->dev_private;
259
260 while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
261
262 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
263 RADEON_P2PLL_ATOMIC_UPDATE_W,
264 ~(RADEON_P2PLL_ATOMIC_UPDATE_W));
265 }
266
267 static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div,
268 uint16_t fb_div)
269 {
270 unsigned int vcoFreq;
271
272 if (!ref_div)
273 return 1;
274
275 vcoFreq = ((unsigned)ref_freq * fb_div) / ref_div;
276
277 /*
278 * This is horribly crude: the VCO frequency range is divided into
279 * 3 parts, each part having a fixed PLL gain value.
280 */
281 if (vcoFreq >= 30000)
282 /*
283 * [300..max] MHz : 7
284 */
285 return 7;
286 else if (vcoFreq >= 18000)
287 /*
288 * [180..300) MHz : 4
289 */
290 return 4;
291 else
292 /*
293 * [0..180) MHz : 1
294 */
295 return 1;
296 }
297
298 void radeon_crtc_dpms(struct drm_crtc *crtc, int mode)
299 {
300 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
301 struct drm_device *dev = crtc->dev;
302 struct radeon_device *rdev = dev->dev_private;
303 uint32_t mask;
304
305 if (radeon_crtc->crtc_id)
306 mask = (RADEON_CRTC2_DISP_DIS |
307 RADEON_CRTC2_VSYNC_DIS |
308 RADEON_CRTC2_HSYNC_DIS |
309 RADEON_CRTC2_DISP_REQ_EN_B);
310 else
311 mask = (RADEON_CRTC_DISPLAY_DIS |
312 RADEON_CRTC_VSYNC_DIS |
313 RADEON_CRTC_HSYNC_DIS);
314
315 switch (mode) {
316 case DRM_MODE_DPMS_ON:
317 radeon_crtc->enabled = true;
318 /* adjust pm to dpms changes BEFORE enabling crtcs */
319 radeon_pm_compute_clocks(rdev);
320 if (radeon_crtc->crtc_id)
321 WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~(RADEON_CRTC2_EN | mask));
322 else {
323 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN |
324 RADEON_CRTC_DISP_REQ_EN_B));
325 WREG32_P(RADEON_CRTC_EXT_CNTL, 0, ~mask);
326 }
327 drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
328 radeon_crtc_load_lut(crtc);
329 break;
330 case DRM_MODE_DPMS_STANDBY:
331 case DRM_MODE_DPMS_SUSPEND:
332 case DRM_MODE_DPMS_OFF:
333 drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id);
334 if (radeon_crtc->crtc_id)
335 WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~(RADEON_CRTC2_EN | mask));
336 else {
337 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN |
338 RADEON_CRTC_DISP_REQ_EN_B));
339 WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~mask);
340 }
341 radeon_crtc->enabled = false;
342 /* adjust pm to dpms changes AFTER disabling crtcs */
343 radeon_pm_compute_clocks(rdev);
344 break;
345 }
346 }
347
348 int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y,
349 struct drm_framebuffer *old_fb)
350 {
351 return radeon_crtc_do_set_base(crtc, old_fb, x, y, 0);
352 }
353
354 int radeon_crtc_set_base_atomic(struct drm_crtc *crtc,
355 struct drm_framebuffer *fb,
356 int x, int y, enum mode_set_atomic state)
357 {
358 return radeon_crtc_do_set_base(crtc, fb, x, y, 1);
359 }
360
361 int radeon_crtc_do_set_base(struct drm_crtc *crtc,
362 struct drm_framebuffer *fb,
363 int x, int y, int atomic)
364 {
365 struct drm_device *dev = crtc->dev;
366 struct radeon_device *rdev = dev->dev_private;
367 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
368 struct radeon_framebuffer *radeon_fb;
369 struct drm_framebuffer *target_fb;
370 struct drm_gem_object *obj;
371 struct radeon_bo *rbo;
372 uint64_t base;
373 uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0;
374 uint32_t crtc_pitch, pitch_pixels;
375 uint32_t tiling_flags;
376 int format;
377 uint32_t gen_cntl_reg, gen_cntl_val;
378 int r;
379
380 DRM_DEBUG_KMS("\n");
381 /* no fb bound */
382 if (!atomic && !crtc->fb) {
383 DRM_DEBUG_KMS("No FB bound\n");
384 return 0;
385 }
386
387 if (atomic) {
388 radeon_fb = to_radeon_framebuffer(fb);
389 target_fb = fb;
390 }
391 else {
392 radeon_fb = to_radeon_framebuffer(crtc->fb);
393 target_fb = crtc->fb;
394 }
395
396 switch (target_fb->bits_per_pixel) {
397 case 8:
398 format = 2;
399 break;
400 case 15: /* 555 */
401 format = 3;
402 break;
403 case 16: /* 565 */
404 format = 4;
405 break;
406 case 24: /* RGB */
407 format = 5;
408 break;
409 case 32: /* xRGB */
410 format = 6;
411 break;
412 default:
413 return false;
414 }
415
416 /* Pin framebuffer & get tilling informations */
417 obj = radeon_fb->obj;
418 rbo = obj->driver_private;
419 r = radeon_bo_reserve(rbo, false);
420 if (unlikely(r != 0))
421 return r;
422 r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &base);
423 if (unlikely(r != 0)) {
424 radeon_bo_unreserve(rbo);
425 return -EINVAL;
426 }
427 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
428 radeon_bo_unreserve(rbo);
429 if (tiling_flags & RADEON_TILING_MICRO)
430 DRM_ERROR("trying to scanout microtiled buffer\n");
431
432 /* if scanout was in GTT this really wouldn't work */
433 /* crtc offset is from display base addr not FB location */
434 radeon_crtc->legacy_display_base_addr = rdev->mc.vram_start;
435
436 base -= radeon_crtc->legacy_display_base_addr;
437
438 crtc_offset_cntl = 0;
439
440 pitch_pixels = target_fb->pitch / (target_fb->bits_per_pixel / 8);
441 crtc_pitch = (((pitch_pixels * target_fb->bits_per_pixel) +
442 ((target_fb->bits_per_pixel * 8) - 1)) /
443 (target_fb->bits_per_pixel * 8));
444 crtc_pitch |= crtc_pitch << 16;
445
446
447 if (tiling_flags & RADEON_TILING_MACRO) {
448 if (ASIC_IS_R300(rdev))
449 crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN |
450 R300_CRTC_MICRO_TILE_BUFFER_DIS |
451 R300_CRTC_MACRO_TILE_EN);
452 else
453 crtc_offset_cntl |= RADEON_CRTC_TILE_EN;
454 } else {
455 if (ASIC_IS_R300(rdev))
456 crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN |
457 R300_CRTC_MICRO_TILE_BUFFER_DIS |
458 R300_CRTC_MACRO_TILE_EN);
459 else
460 crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN;
461 }
462
463 if (tiling_flags & RADEON_TILING_MACRO) {
464 if (ASIC_IS_R300(rdev)) {
465 crtc_tile_x0_y0 = x | (y << 16);
466 base &= ~0x7ff;
467 } else {
468 int byteshift = target_fb->bits_per_pixel >> 4;
469 int tile_addr = (((y >> 3) * pitch_pixels + x) >> (8 - byteshift)) << 11;
470 base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8);
471 crtc_offset_cntl |= (y % 16);
472 }
473 } else {
474 int offset = y * pitch_pixels + x;
475 switch (target_fb->bits_per_pixel) {
476 case 8:
477 offset *= 1;
478 break;
479 case 15:
480 case 16:
481 offset *= 2;
482 break;
483 case 24:
484 offset *= 3;
485 break;
486 case 32:
487 offset *= 4;
488 break;
489 default:
490 return false;
491 }
492 base += offset;
493 }
494
495 base &= ~7;
496
497 if (radeon_crtc->crtc_id == 1)
498 gen_cntl_reg = RADEON_CRTC2_GEN_CNTL;
499 else
500 gen_cntl_reg = RADEON_CRTC_GEN_CNTL;
501
502 gen_cntl_val = RREG32(gen_cntl_reg);
503 gen_cntl_val &= ~(0xf << 8);
504 gen_cntl_val |= (format << 8);
505 WREG32(gen_cntl_reg, gen_cntl_val);
506
507 crtc_offset = (u32)base;
508
509 WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, radeon_crtc->legacy_display_base_addr);
510
511 if (ASIC_IS_R300(rdev)) {
512 if (radeon_crtc->crtc_id)
513 WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0);
514 else
515 WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0);
516 }
517 WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl);
518 WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset);
519 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);
520
521 if (!atomic && fb && fb != crtc->fb) {
522 radeon_fb = to_radeon_framebuffer(fb);
523 rbo = radeon_fb->obj->driver_private;
524 r = radeon_bo_reserve(rbo, false);
525 if (unlikely(r != 0))
526 return r;
527 radeon_bo_unpin(rbo);
528 radeon_bo_unreserve(rbo);
529 }
530
531 /* Bytes per pixel may have changed */
532 radeon_bandwidth_update(rdev);
533
534 return 0;
535 }
536
537 static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode)
538 {
539 struct drm_device *dev = crtc->dev;
540 struct radeon_device *rdev = dev->dev_private;
541 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
542 struct drm_encoder *encoder;
543 int format;
544 int hsync_start;
545 int hsync_wid;
546 int vsync_wid;
547 uint32_t crtc_h_total_disp;
548 uint32_t crtc_h_sync_strt_wid;
549 uint32_t crtc_v_total_disp;
550 uint32_t crtc_v_sync_strt_wid;
551 bool is_tv = false;
552
553 DRM_DEBUG_KMS("\n");
554 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
555 if (encoder->crtc == crtc) {
556 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
557 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
558 is_tv = true;
559 DRM_INFO("crtc %d is connected to a TV\n", radeon_crtc->crtc_id);
560 break;
561 }
562 }
563 }
564
565 switch (crtc->fb->bits_per_pixel) {
566 case 8:
567 format = 2;
568 break;
569 case 15: /* 555 */
570 format = 3;
571 break;
572 case 16: /* 565 */
573 format = 4;
574 break;
575 case 24: /* RGB */
576 format = 5;
577 break;
578 case 32: /* xRGB */
579 format = 6;
580 break;
581 default:
582 return false;
583 }
584
585 crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
586 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
587
588 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
589 if (!hsync_wid)
590 hsync_wid = 1;
591 hsync_start = mode->crtc_hsync_start - 8;
592
593 crtc_h_sync_strt_wid = ((hsync_start & 0x1fff)
594 | ((hsync_wid & 0x3f) << 16)
595 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
596 ? RADEON_CRTC_H_SYNC_POL
597 : 0));
598
599 /* This works for double scan mode. */
600 crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
601 | ((mode->crtc_vdisplay - 1) << 16));
602
603 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
604 if (!vsync_wid)
605 vsync_wid = 1;
606
607 crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
608 | ((vsync_wid & 0x1f) << 16)
609 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
610 ? RADEON_CRTC_V_SYNC_POL
611 : 0));
612
613 if (radeon_crtc->crtc_id) {
614 uint32_t crtc2_gen_cntl;
615 uint32_t disp2_merge_cntl;
616
617 /* if TV DAC is enabled for another crtc and keep it enabled */
618 crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0x00718080;
619 crtc2_gen_cntl |= ((format << 8)
620 | RADEON_CRTC2_VSYNC_DIS
621 | RADEON_CRTC2_HSYNC_DIS
622 | RADEON_CRTC2_DISP_DIS
623 | RADEON_CRTC2_DISP_REQ_EN_B
624 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
625 ? RADEON_CRTC2_DBL_SCAN_EN
626 : 0)
627 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
628 ? RADEON_CRTC2_CSYNC_EN
629 : 0)
630 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
631 ? RADEON_CRTC2_INTERLACE_EN
632 : 0));
633
634 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */
635 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480))
636 crtc2_gen_cntl |= RADEON_CRTC2_EN;
637
638 disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
639 disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
640
641 WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl);
642 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);
643
644 WREG32(RADEON_FP_H2_SYNC_STRT_WID, crtc_h_sync_strt_wid);
645 WREG32(RADEON_FP_V2_SYNC_STRT_WID, crtc_v_sync_strt_wid);
646 } else {
647 uint32_t crtc_gen_cntl;
648 uint32_t crtc_ext_cntl;
649 uint32_t disp_merge_cntl;
650
651 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0x00718000;
652 crtc_gen_cntl |= (RADEON_CRTC_EXT_DISP_EN
653 | (format << 8)
654 | RADEON_CRTC_DISP_REQ_EN_B
655 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
656 ? RADEON_CRTC_DBL_SCAN_EN
657 : 0)
658 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
659 ? RADEON_CRTC_CSYNC_EN
660 : 0)
661 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
662 ? RADEON_CRTC_INTERLACE_EN
663 : 0));
664
665 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */
666 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480))
667 crtc_gen_cntl |= RADEON_CRTC_EN;
668
669 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);
670 crtc_ext_cntl |= (RADEON_XCRT_CNT_EN |
671 RADEON_CRTC_VSYNC_DIS |
672 RADEON_CRTC_HSYNC_DIS |
673 RADEON_CRTC_DISPLAY_DIS);
674
675 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
676 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
677
678 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
679 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);
680 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl);
681 }
682
683 if (is_tv)
684 radeon_legacy_tv_adjust_crtc_reg(encoder, &crtc_h_total_disp,
685 &crtc_h_sync_strt_wid, &crtc_v_total_disp,
686 &crtc_v_sync_strt_wid);
687
688 WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp);
689 WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid);
690 WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp);
691 WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid);
692
693 return true;
694 }
695
696 static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
697 {
698 struct drm_device *dev = crtc->dev;
699 struct radeon_device *rdev = dev->dev_private;
700 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
701 struct drm_encoder *encoder;
702 uint32_t feedback_div = 0;
703 uint32_t frac_fb_div = 0;
704 uint32_t reference_div = 0;
705 uint32_t post_divider = 0;
706 uint32_t freq = 0;
707 uint8_t pll_gain;
708 bool use_bios_divs = false;
709 /* PLL registers */
710 uint32_t pll_ref_div = 0;
711 uint32_t pll_fb_post_div = 0;
712 uint32_t htotal_cntl = 0;
713 bool is_tv = false;
714 struct radeon_pll *pll;
715
716 struct {
717 int divider;
718 int bitvalue;
719 } *post_div, post_divs[] = {
720 /* From RAGE 128 VR/RAGE 128 GL Register
721 * Reference Manual (Technical Reference
722 * Manual P/N RRG-G04100-C Rev. 0.04), page
723 * 3-17 (PLL_DIV_[3:0]).
724 */
725 { 1, 0 }, /* VCLK_SRC */
726 { 2, 1 }, /* VCLK_SRC/2 */
727 { 4, 2 }, /* VCLK_SRC/4 */
728 { 8, 3 }, /* VCLK_SRC/8 */
729 { 3, 4 }, /* VCLK_SRC/3 */
730 { 16, 5 }, /* VCLK_SRC/16 */
731 { 6, 6 }, /* VCLK_SRC/6 */
732 { 12, 7 }, /* VCLK_SRC/12 */
733 { 0, 0 }
734 };
735
736 if (radeon_crtc->crtc_id)
737 pll = &rdev->clock.p2pll;
738 else
739 pll = &rdev->clock.p1pll;
740
741 pll->flags = RADEON_PLL_LEGACY;
742
743 if (mode->clock > 200000) /* range limits??? */
744 pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
745 else
746 pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
747
748 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
749 if (encoder->crtc == crtc) {
750 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
751
752 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
753 is_tv = true;
754 break;
755 }
756
757 if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
758 pll->flags |= RADEON_PLL_NO_ODD_POST_DIV;
759 if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) {
760 if (!rdev->is_atom_bios) {
761 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
762 struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv;
763 if (lvds) {
764 if (lvds->use_bios_dividers) {
765 pll_ref_div = lvds->panel_ref_divider;
766 pll_fb_post_div = (lvds->panel_fb_divider |
767 (lvds->panel_post_divider << 16));
768 htotal_cntl = 0;
769 use_bios_divs = true;
770 }
771 }
772 }
773 pll->flags |= RADEON_PLL_USE_REF_DIV;
774 }
775 }
776 }
777
778 DRM_DEBUG_KMS("\n");
779
780 if (!use_bios_divs) {
781 radeon_compute_pll_legacy(pll, mode->clock,
782 &freq, &feedback_div, &frac_fb_div,
783 &reference_div, &post_divider);
784
785 for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
786 if (post_div->divider == post_divider)
787 break;
788 }
789
790 if (!post_div->divider)
791 post_div = &post_divs[0];
792
793 DRM_DEBUG_KMS("dc=%u, fd=%d, rd=%d, pd=%d\n",
794 (unsigned)freq,
795 feedback_div,
796 reference_div,
797 post_divider);
798
799 pll_ref_div = reference_div;
800 #if defined(__powerpc__) && (0) /* TODO */
801 /* apparently programming this otherwise causes a hang??? */
802 if (info->MacModel == RADEON_MAC_IBOOK)
803 pll_fb_post_div = 0x000600ad;
804 else
805 #endif
806 pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16));
807
808 htotal_cntl = mode->htotal & 0x7;
809
810 }
811
812 pll_gain = radeon_compute_pll_gain(pll->reference_freq,
813 pll_ref_div & 0x3ff,
814 pll_fb_post_div & 0x7ff);
815
816 if (radeon_crtc->crtc_id) {
817 uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) &
818 ~(RADEON_PIX2CLK_SRC_SEL_MASK)) |
819 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK);
820
821 if (is_tv) {
822 radeon_legacy_tv_adjust_pll2(encoder, &htotal_cntl,
823 &pll_ref_div, &pll_fb_post_div,
824 &pixclks_cntl);
825 }
826
827 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
828 RADEON_PIX2CLK_SRC_SEL_CPUCLK,
829 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
830
831 WREG32_PLL_P(RADEON_P2PLL_CNTL,
832 RADEON_P2PLL_RESET
833 | RADEON_P2PLL_ATOMIC_UPDATE_EN
834 | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT),
835 ~(RADEON_P2PLL_RESET
836 | RADEON_P2PLL_ATOMIC_UPDATE_EN
837 | RADEON_P2PLL_PVG_MASK));
838
839 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
840 pll_ref_div,
841 ~RADEON_P2PLL_REF_DIV_MASK);
842
843 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
844 pll_fb_post_div,
845 ~RADEON_P2PLL_FB0_DIV_MASK);
846
847 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
848 pll_fb_post_div,
849 ~RADEON_P2PLL_POST0_DIV_MASK);
850
851 radeon_pll2_write_update(dev);
852 radeon_pll2_wait_for_read_update_complete(dev);
853
854 WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl);
855
856 WREG32_PLL_P(RADEON_P2PLL_CNTL,
857 0,
858 ~(RADEON_P2PLL_RESET
859 | RADEON_P2PLL_SLEEP
860 | RADEON_P2PLL_ATOMIC_UPDATE_EN));
861
862 DRM_DEBUG_KMS("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
863 (unsigned)pll_ref_div,
864 (unsigned)pll_fb_post_div,
865 (unsigned)htotal_cntl,
866 RREG32_PLL(RADEON_P2PLL_CNTL));
867 DRM_DEBUG_KMS("Wrote2: rd=%u, fd=%u, pd=%u\n",
868 (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK,
869 (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK,
870 (unsigned)((pll_fb_post_div &
871 RADEON_P2PLL_POST0_DIV_MASK) >> 16));
872
873 mdelay(50); /* Let the clock to lock */
874
875 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
876 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
877 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
878
879 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
880 } else {
881 uint32_t pixclks_cntl;
882
883
884 if (is_tv) {
885 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);
886 radeon_legacy_tv_adjust_pll1(encoder, &htotal_cntl, &pll_ref_div,
887 &pll_fb_post_div, &pixclks_cntl);
888 }
889
890 if (rdev->flags & RADEON_IS_MOBILITY) {
891 /* A temporal workaround for the occational blanking on certain laptop panels.
892 This appears to related to the PLL divider registers (fail to lock?).
893 It occurs even when all dividers are the same with their old settings.
894 In this case we really don't need to fiddle with PLL registers.
895 By doing this we can avoid the blanking problem with some panels.
896 */
897 if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) &&
898 (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) &
899 (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) {
900 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
901 RADEON_PLL_DIV_SEL,
902 ~(RADEON_PLL_DIV_SEL));
903 r100_pll_errata_after_index(rdev);
904 return;
905 }
906 }
907
908 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
909 RADEON_VCLK_SRC_SEL_CPUCLK,
910 ~(RADEON_VCLK_SRC_SEL_MASK));
911 WREG32_PLL_P(RADEON_PPLL_CNTL,
912 RADEON_PPLL_RESET
913 | RADEON_PPLL_ATOMIC_UPDATE_EN
914 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
915 | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT),
916 ~(RADEON_PPLL_RESET
917 | RADEON_PPLL_ATOMIC_UPDATE_EN
918 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
919 | RADEON_PPLL_PVG_MASK));
920
921 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
922 RADEON_PLL_DIV_SEL,
923 ~(RADEON_PLL_DIV_SEL));
924 r100_pll_errata_after_index(rdev);
925
926 if (ASIC_IS_R300(rdev) ||
927 (rdev->family == CHIP_RS300) ||
928 (rdev->family == CHIP_RS400) ||
929 (rdev->family == CHIP_RS480)) {
930 if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
931 /* When restoring console mode, use saved PPLL_REF_DIV
932 * setting.
933 */
934 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
935 pll_ref_div,
936 0);
937 } else {
938 /* R300 uses ref_div_acc field as real ref divider */
939 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
940 (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
941 ~R300_PPLL_REF_DIV_ACC_MASK);
942 }
943 } else
944 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
945 pll_ref_div,
946 ~RADEON_PPLL_REF_DIV_MASK);
947
948 WREG32_PLL_P(RADEON_PPLL_DIV_3,
949 pll_fb_post_div,
950 ~RADEON_PPLL_FB3_DIV_MASK);
951
952 WREG32_PLL_P(RADEON_PPLL_DIV_3,
953 pll_fb_post_div,
954 ~RADEON_PPLL_POST3_DIV_MASK);
955
956 radeon_pll_write_update(dev);
957 radeon_pll_wait_for_read_update_complete(dev);
958
959 WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl);
960
961 WREG32_PLL_P(RADEON_PPLL_CNTL,
962 0,
963 ~(RADEON_PPLL_RESET
964 | RADEON_PPLL_SLEEP
965 | RADEON_PPLL_ATOMIC_UPDATE_EN
966 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN));
967
968 DRM_DEBUG_KMS("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
969 pll_ref_div,
970 pll_fb_post_div,
971 (unsigned)htotal_cntl,
972 RREG32_PLL(RADEON_PPLL_CNTL));
973 DRM_DEBUG_KMS("Wrote: rd=%d, fd=%d, pd=%d\n",
974 pll_ref_div & RADEON_PPLL_REF_DIV_MASK,
975 pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK,
976 (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16);
977
978 mdelay(50); /* Let the clock to lock */
979
980 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
981 RADEON_VCLK_SRC_SEL_PPLLCLK,
982 ~(RADEON_VCLK_SRC_SEL_MASK));
983
984 if (is_tv)
985 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
986 }
987 }
988
989 static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc,
990 struct drm_display_mode *mode,
991 struct drm_display_mode *adjusted_mode)
992 {
993 struct drm_device *dev = crtc->dev;
994 struct radeon_device *rdev = dev->dev_private;
995
996 /* adjust pm to upcoming mode change */
997 radeon_pm_compute_clocks(rdev);
998
999 if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
1000 return false;
1001 return true;
1002 }
1003
1004 static int radeon_crtc_mode_set(struct drm_crtc *crtc,
1005 struct drm_display_mode *mode,
1006 struct drm_display_mode *adjusted_mode,
1007 int x, int y, struct drm_framebuffer *old_fb)
1008 {
1009 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1010
1011 /* TODO TV */
1012 radeon_crtc_set_base(crtc, x, y, old_fb);
1013 radeon_set_crtc_timing(crtc, adjusted_mode);
1014 radeon_set_pll(crtc, adjusted_mode);
1015 radeon_overscan_setup(crtc, adjusted_mode);
1016 if (radeon_crtc->crtc_id == 0) {
1017 radeon_legacy_rmx_mode_set(crtc, adjusted_mode);
1018 } else {
1019 if (radeon_crtc->rmx_type != RMX_OFF) {
1020 /* FIXME: only first crtc has rmx what should we
1021 * do ?
1022 */
1023 DRM_ERROR("Mode need scaling but only first crtc can do that.\n");
1024 }
1025 }
1026 return 0;
1027 }
1028
1029 static void radeon_crtc_prepare(struct drm_crtc *crtc)
1030 {
1031 struct drm_device *dev = crtc->dev;
1032 struct drm_crtc *crtci;
1033
1034 /*
1035 * The hardware wedges sometimes if you reconfigure one CRTC
1036 * whilst another is running (see fdo bug #24611).
1037 */
1038 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
1039 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_OFF);
1040 }
1041
1042 static void radeon_crtc_commit(struct drm_crtc *crtc)
1043 {
1044 struct drm_device *dev = crtc->dev;
1045 struct drm_crtc *crtci;
1046
1047 /*
1048 * Reenable the CRTCs that should be running.
1049 */
1050 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) {
1051 if (crtci->enabled)
1052 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_ON);
1053 }
1054 }
1055
1056 static const struct drm_crtc_helper_funcs legacy_helper_funcs = {
1057 .dpms = radeon_crtc_dpms,
1058 .mode_fixup = radeon_crtc_mode_fixup,
1059 .mode_set = radeon_crtc_mode_set,
1060 .mode_set_base = radeon_crtc_set_base,
1061 .mode_set_base_atomic = radeon_crtc_set_base_atomic,
1062 .prepare = radeon_crtc_prepare,
1063 .commit = radeon_crtc_commit,
1064 .load_lut = radeon_crtc_load_lut,
1065 };
1066
1067
1068 void radeon_legacy_init_crtc(struct drm_device *dev,
1069 struct radeon_crtc *radeon_crtc)
1070 {
1071 if (radeon_crtc->crtc_id == 1)
1072 radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP;
1073 drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs);
1074 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree