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 #include "atom-bits.h"
33 
34 static void atombios_overscan_setup(struct drm_crtc *crtc,
35 				    struct drm_display_mode *mode,
36 				    struct drm_display_mode *adjusted_mode)
37 {
38 	struct drm_device *dev = crtc->dev;
39 	struct radeon_device *rdev = dev->dev_private;
40 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
41 	SET_CRTC_OVERSCAN_PS_ALLOCATION args;
42 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_OverScan);
43 	int a1, a2;
44 
45 	memset(&args, 0, sizeof(args));
46 
47 	args.ucCRTC = radeon_crtc->crtc_id;
48 
49 	switch (radeon_crtc->rmx_type) {
50 	case RMX_CENTER:
51 		args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
52 		args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
53 		args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
54 		args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
55 		break;
56 	case RMX_ASPECT:
57 		a1 = mode->crtc_vdisplay * adjusted_mode->crtc_hdisplay;
58 		a2 = adjusted_mode->crtc_vdisplay * mode->crtc_hdisplay;
59 
60 		if (a1 > a2) {
61 			args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
62 			args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
63 		} else if (a2 > a1) {
64 			args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
65 			args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
66 		}
67 		break;
68 	case RMX_FULL:
69 	default:
70 		args.usOverscanRight = cpu_to_le16(radeon_crtc->h_border);
71 		args.usOverscanLeft = cpu_to_le16(radeon_crtc->h_border);
72 		args.usOverscanBottom = cpu_to_le16(radeon_crtc->v_border);
73 		args.usOverscanTop = cpu_to_le16(radeon_crtc->v_border);
74 		break;
75 	}
76 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
77 }
78 
79 static void atombios_scaler_setup(struct drm_crtc *crtc)
80 {
81 	struct drm_device *dev = crtc->dev;
82 	struct radeon_device *rdev = dev->dev_private;
83 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
84 	ENABLE_SCALER_PS_ALLOCATION args;
85 	int index = GetIndexIntoMasterTable(COMMAND, EnableScaler);
86 	struct radeon_encoder *radeon_encoder =
87 		to_radeon_encoder(radeon_crtc->encoder);
88 	/* fixme - fill in enc_priv for atom dac */
89 	enum radeon_tv_std tv_std = TV_STD_NTSC;
90 	bool is_tv = false, is_cv = false;
91 
92 	if (!ASIC_IS_AVIVO(rdev) && radeon_crtc->crtc_id)
93 		return;
94 
95 	if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
96 		struct radeon_encoder_atom_dac *tv_dac = radeon_encoder->enc_priv;
97 		tv_std = tv_dac->tv_std;
98 		is_tv = true;
99 	}
100 
101 	memset(&args, 0, sizeof(args));
102 
103 	args.ucScaler = radeon_crtc->crtc_id;
104 
105 	if (is_tv) {
106 		switch (tv_std) {
107 		case TV_STD_NTSC:
108 		default:
109 			args.ucTVStandard = ATOM_TV_NTSC;
110 			break;
111 		case TV_STD_PAL:
112 			args.ucTVStandard = ATOM_TV_PAL;
113 			break;
114 		case TV_STD_PAL_M:
115 			args.ucTVStandard = ATOM_TV_PALM;
116 			break;
117 		case TV_STD_PAL_60:
118 			args.ucTVStandard = ATOM_TV_PAL60;
119 			break;
120 		case TV_STD_NTSC_J:
121 			args.ucTVStandard = ATOM_TV_NTSCJ;
122 			break;
123 		case TV_STD_SCART_PAL:
124 			args.ucTVStandard = ATOM_TV_PAL; /* ??? */
125 			break;
126 		case TV_STD_SECAM:
127 			args.ucTVStandard = ATOM_TV_SECAM;
128 			break;
129 		case TV_STD_PAL_CN:
130 			args.ucTVStandard = ATOM_TV_PALCN;
131 			break;
132 		}
133 		args.ucEnable = SCALER_ENABLE_MULTITAP_MODE;
134 	} else if (is_cv) {
135 		args.ucTVStandard = ATOM_TV_CV;
136 		args.ucEnable = SCALER_ENABLE_MULTITAP_MODE;
137 	} else {
138 		switch (radeon_crtc->rmx_type) {
139 		case RMX_FULL:
140 			args.ucEnable = ATOM_SCALER_EXPANSION;
141 			break;
142 		case RMX_CENTER:
143 			args.ucEnable = ATOM_SCALER_CENTER;
144 			break;
145 		case RMX_ASPECT:
146 			args.ucEnable = ATOM_SCALER_EXPANSION;
147 			break;
148 		default:
149 			if (ASIC_IS_AVIVO(rdev))
150 				args.ucEnable = ATOM_SCALER_DISABLE;
151 			else
152 				args.ucEnable = ATOM_SCALER_CENTER;
153 			break;
154 		}
155 	}
156 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
157 	if ((is_tv || is_cv)
158 	    && rdev->family >= CHIP_RV515 && rdev->family <= CHIP_R580) {
159 		atom_rv515_force_tv_scaler(rdev, radeon_crtc);
160 	}
161 }
162 
163 static void atombios_lock_crtc(struct drm_crtc *crtc, int lock)
164 {
165 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
166 	struct drm_device *dev = crtc->dev;
167 	struct radeon_device *rdev = dev->dev_private;
168 	int index =
169 	    GetIndexIntoMasterTable(COMMAND, UpdateCRTC_DoubleBufferRegisters);
170 	ENABLE_CRTC_PS_ALLOCATION args;
171 
172 	memset(&args, 0, sizeof(args));
173 
174 	args.ucCRTC = radeon_crtc->crtc_id;
175 	args.ucEnable = lock;
176 
177 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
178 }
179 
180 static void atombios_enable_crtc(struct drm_crtc *crtc, int state)
181 {
182 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
183 	struct drm_device *dev = crtc->dev;
184 	struct radeon_device *rdev = dev->dev_private;
185 	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTC);
186 	ENABLE_CRTC_PS_ALLOCATION args;
187 
188 	memset(&args, 0, sizeof(args));
189 
190 	args.ucCRTC = radeon_crtc->crtc_id;
191 	args.ucEnable = state;
192 
193 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
194 }
195 
196 static void atombios_enable_crtc_memreq(struct drm_crtc *crtc, int state)
197 {
198 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
199 	struct drm_device *dev = crtc->dev;
200 	struct radeon_device *rdev = dev->dev_private;
201 	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTCMemReq);
202 	ENABLE_CRTC_PS_ALLOCATION args;
203 
204 	memset(&args, 0, sizeof(args));
205 
206 	args.ucCRTC = radeon_crtc->crtc_id;
207 	args.ucEnable = state;
208 
209 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
210 }
211 
212 static const u32 vga_control_regs[6] =
213 {
214 	AVIVO_D1VGA_CONTROL,
215 	AVIVO_D2VGA_CONTROL,
216 	EVERGREEN_D3VGA_CONTROL,
217 	EVERGREEN_D4VGA_CONTROL,
218 	EVERGREEN_D5VGA_CONTROL,
219 	EVERGREEN_D6VGA_CONTROL,
220 };
221 
222 static void atombios_blank_crtc(struct drm_crtc *crtc, int state)
223 {
224 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
225 	struct drm_device *dev = crtc->dev;
226 	struct radeon_device *rdev = dev->dev_private;
227 	int index = GetIndexIntoMasterTable(COMMAND, BlankCRTC);
228 	BLANK_CRTC_PS_ALLOCATION args;
229 	u32 vga_control = 0;
230 
231 	memset(&args, 0, sizeof(args));
232 
233 	if (ASIC_IS_DCE8(rdev)) {
234 		vga_control = RREG32(vga_control_regs[radeon_crtc->crtc_id]);
235 		WREG32(vga_control_regs[radeon_crtc->crtc_id], vga_control | 1);
236 	}
237 
238 	args.ucCRTC = radeon_crtc->crtc_id;
239 	args.ucBlanking = state;
240 
241 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
242 
243 	if (ASIC_IS_DCE8(rdev)) {
244 		WREG32(vga_control_regs[radeon_crtc->crtc_id], vga_control);
245 	}
246 }
247 
248 static void atombios_powergate_crtc(struct drm_crtc *crtc, int state)
249 {
250 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
251 	struct drm_device *dev = crtc->dev;
252 	struct radeon_device *rdev = dev->dev_private;
253 	int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
254 	ENABLE_DISP_POWER_GATING_PARAMETERS_V2_1 args;
255 
256 	memset(&args, 0, sizeof(args));
257 
258 	args.ucDispPipeId = radeon_crtc->crtc_id;
259 	args.ucEnable = state;
260 
261 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
262 }
263 
264 void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
265 {
266 	struct drm_device *dev = crtc->dev;
267 	struct radeon_device *rdev = dev->dev_private;
268 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
269 
270 	switch (mode) {
271 	case DRM_MODE_DPMS_ON:
272 		radeon_crtc->enabled = true;
273 		/* adjust pm to dpms changes BEFORE enabling crtcs */
274 		radeon_pm_compute_clocks(rdev);
275 		atombios_enable_crtc(crtc, ATOM_ENABLE);
276 		if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
277 			atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
278 		atombios_blank_crtc(crtc, ATOM_DISABLE);
279 		drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
280 		radeon_crtc_load_lut(crtc);
281 		break;
282 	case DRM_MODE_DPMS_STANDBY:
283 	case DRM_MODE_DPMS_SUSPEND:
284 	case DRM_MODE_DPMS_OFF:
285 		drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id);
286 		if (radeon_crtc->enabled)
287 			atombios_blank_crtc(crtc, ATOM_ENABLE);
288 		if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
289 			atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
290 		atombios_enable_crtc(crtc, ATOM_DISABLE);
291 		radeon_crtc->enabled = false;
292 		/* adjust pm to dpms changes AFTER disabling crtcs */
293 		radeon_pm_compute_clocks(rdev);
294 		break;
295 	}
296 }
297 
298 static void
299 atombios_set_crtc_dtd_timing(struct drm_crtc *crtc,
300 			     struct drm_display_mode *mode)
301 {
302 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
303 	struct drm_device *dev = crtc->dev;
304 	struct radeon_device *rdev = dev->dev_private;
305 	SET_CRTC_USING_DTD_TIMING_PARAMETERS args;
306 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_UsingDTDTiming);
307 	u16 misc = 0;
308 
309 	memset(&args, 0, sizeof(args));
310 	args.usH_Size = cpu_to_le16(mode->crtc_hdisplay - (radeon_crtc->h_border * 2));
311 	args.usH_Blanking_Time =
312 		cpu_to_le16(mode->crtc_hblank_end - mode->crtc_hdisplay + (radeon_crtc->h_border * 2));
313 	args.usV_Size = cpu_to_le16(mode->crtc_vdisplay - (radeon_crtc->v_border * 2));
314 	args.usV_Blanking_Time =
315 		cpu_to_le16(mode->crtc_vblank_end - mode->crtc_vdisplay + (radeon_crtc->v_border * 2));
316 	args.usH_SyncOffset =
317 		cpu_to_le16(mode->crtc_hsync_start - mode->crtc_hdisplay + radeon_crtc->h_border);
318 	args.usH_SyncWidth =
319 		cpu_to_le16(mode->crtc_hsync_end - mode->crtc_hsync_start);
320 	args.usV_SyncOffset =
321 		cpu_to_le16(mode->crtc_vsync_start - mode->crtc_vdisplay + radeon_crtc->v_border);
322 	args.usV_SyncWidth =
323 		cpu_to_le16(mode->crtc_vsync_end - mode->crtc_vsync_start);
324 	args.ucH_Border = radeon_crtc->h_border;
325 	args.ucV_Border = radeon_crtc->v_border;
326 
327 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
328 		misc |= ATOM_VSYNC_POLARITY;
329 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
330 		misc |= ATOM_HSYNC_POLARITY;
331 	if (mode->flags & DRM_MODE_FLAG_CSYNC)
332 		misc |= ATOM_COMPOSITESYNC;
333 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
334 		misc |= ATOM_INTERLACE;
335 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
336 		misc |= ATOM_DOUBLE_CLOCK_MODE;
337 
338 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
339 	args.ucCRTC = radeon_crtc->crtc_id;
340 
341 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
342 }
343 
344 static void atombios_crtc_set_timing(struct drm_crtc *crtc,
345 				     struct drm_display_mode *mode)
346 {
347 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
348 	struct drm_device *dev = crtc->dev;
349 	struct radeon_device *rdev = dev->dev_private;
350 	SET_CRTC_TIMING_PARAMETERS_PS_ALLOCATION args;
351 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_Timing);
352 	u16 misc = 0;
353 
354 	memset(&args, 0, sizeof(args));
355 	args.usH_Total = cpu_to_le16(mode->crtc_htotal);
356 	args.usH_Disp = cpu_to_le16(mode->crtc_hdisplay);
357 	args.usH_SyncStart = cpu_to_le16(mode->crtc_hsync_start);
358 	args.usH_SyncWidth =
359 		cpu_to_le16(mode->crtc_hsync_end - mode->crtc_hsync_start);
360 	args.usV_Total = cpu_to_le16(mode->crtc_vtotal);
361 	args.usV_Disp = cpu_to_le16(mode->crtc_vdisplay);
362 	args.usV_SyncStart = cpu_to_le16(mode->crtc_vsync_start);
363 	args.usV_SyncWidth =
364 		cpu_to_le16(mode->crtc_vsync_end - mode->crtc_vsync_start);
365 
366 	args.ucOverscanRight = radeon_crtc->h_border;
367 	args.ucOverscanLeft = radeon_crtc->h_border;
368 	args.ucOverscanBottom = radeon_crtc->v_border;
369 	args.ucOverscanTop = radeon_crtc->v_border;
370 
371 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
372 		misc |= ATOM_VSYNC_POLARITY;
373 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
374 		misc |= ATOM_HSYNC_POLARITY;
375 	if (mode->flags & DRM_MODE_FLAG_CSYNC)
376 		misc |= ATOM_COMPOSITESYNC;
377 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
378 		misc |= ATOM_INTERLACE;
379 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
380 		misc |= ATOM_DOUBLE_CLOCK_MODE;
381 
382 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
383 	args.ucCRTC = radeon_crtc->crtc_id;
384 
385 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
386 }
387 
388 static void atombios_disable_ss(struct radeon_device *rdev, int pll_id)
389 {
390 	u32 ss_cntl;
391 
392 	if (ASIC_IS_DCE4(rdev)) {
393 		switch (pll_id) {
394 		case ATOM_PPLL1:
395 			ss_cntl = RREG32(EVERGREEN_P1PLL_SS_CNTL);
396 			ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
397 			WREG32(EVERGREEN_P1PLL_SS_CNTL, ss_cntl);
398 			break;
399 		case ATOM_PPLL2:
400 			ss_cntl = RREG32(EVERGREEN_P2PLL_SS_CNTL);
401 			ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
402 			WREG32(EVERGREEN_P2PLL_SS_CNTL, ss_cntl);
403 			break;
404 		case ATOM_DCPLL:
405 		case ATOM_PPLL_INVALID:
406 			return;
407 		}
408 	} else if (ASIC_IS_AVIVO(rdev)) {
409 		switch (pll_id) {
410 		case ATOM_PPLL1:
411 			ss_cntl = RREG32(AVIVO_P1PLL_INT_SS_CNTL);
412 			ss_cntl &= ~1;
413 			WREG32(AVIVO_P1PLL_INT_SS_CNTL, ss_cntl);
414 			break;
415 		case ATOM_PPLL2:
416 			ss_cntl = RREG32(AVIVO_P2PLL_INT_SS_CNTL);
417 			ss_cntl &= ~1;
418 			WREG32(AVIVO_P2PLL_INT_SS_CNTL, ss_cntl);
419 			break;
420 		case ATOM_DCPLL:
421 		case ATOM_PPLL_INVALID:
422 			return;
423 		}
424 	}
425 }
426 
427 
428 union atom_enable_ss {
429 	ENABLE_LVDS_SS_PARAMETERS lvds_ss;
430 	ENABLE_LVDS_SS_PARAMETERS_V2 lvds_ss_2;
431 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION v1;
432 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V2 v2;
433 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V3 v3;
434 };
435 
436 static void atombios_crtc_program_ss(struct radeon_device *rdev,
437 				     int enable,
438 				     int pll_id,
439 				     int crtc_id,
440 				     struct radeon_atom_ss *ss)
441 {
442 	unsigned i;
443 	int index = GetIndexIntoMasterTable(COMMAND, EnableSpreadSpectrumOnPPLL);
444 	union atom_enable_ss args;
445 
446 	if (enable) {
447 		/* Don't mess with SS if percentage is 0 or external ss.
448 		 * SS is already disabled previously, and disabling it
449 		 * again can cause display problems if the pll is already
450 		 * programmed.
451 		 */
452 		if (ss->percentage == 0)
453 			return;
454 		if (ss->type & ATOM_EXTERNAL_SS_MASK)
455 			return;
456 	} else {
457 		for (i = 0; i < rdev->num_crtc; i++) {
458 			if (rdev->mode_info.crtcs[i] &&
459 			    rdev->mode_info.crtcs[i]->enabled &&
460 			    i != crtc_id &&
461 			    pll_id == rdev->mode_info.crtcs[i]->pll_id) {
462 				/* one other crtc is using this pll don't turn
463 				 * off spread spectrum as it might turn off
464 				 * display on active crtc
465 				 */
466 				return;
467 			}
468 		}
469 	}
470 
471 	memset(&args, 0, sizeof(args));
472 
473 	if (ASIC_IS_DCE5(rdev)) {
474 		args.v3.usSpreadSpectrumAmountFrac = cpu_to_le16(0);
475 		args.v3.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
476 		switch (pll_id) {
477 		case ATOM_PPLL1:
478 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P1PLL;
479 			break;
480 		case ATOM_PPLL2:
481 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P2PLL;
482 			break;
483 		case ATOM_DCPLL:
484 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_DCPLL;
485 			break;
486 		case ATOM_PPLL_INVALID:
487 			return;
488 		}
489 		args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
490 		args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
491 		args.v3.ucEnable = enable;
492 	} else if (ASIC_IS_DCE4(rdev)) {
493 		args.v2.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
494 		args.v2.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
495 		switch (pll_id) {
496 		case ATOM_PPLL1:
497 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P1PLL;
498 			break;
499 		case ATOM_PPLL2:
500 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P2PLL;
501 			break;
502 		case ATOM_DCPLL:
503 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_DCPLL;
504 			break;
505 		case ATOM_PPLL_INVALID:
506 			return;
507 		}
508 		args.v2.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
509 		args.v2.usSpreadSpectrumStep = cpu_to_le16(ss->step);
510 		args.v2.ucEnable = enable;
511 	} else if (ASIC_IS_DCE3(rdev)) {
512 		args.v1.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
513 		args.v1.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
514 		args.v1.ucSpreadSpectrumStep = ss->step;
515 		args.v1.ucSpreadSpectrumDelay = ss->delay;
516 		args.v1.ucSpreadSpectrumRange = ss->range;
517 		args.v1.ucPpll = pll_id;
518 		args.v1.ucEnable = enable;
519 	} else if (ASIC_IS_AVIVO(rdev)) {
520 		if ((enable == ATOM_DISABLE) || (ss->percentage == 0) ||
521 		    (ss->type & ATOM_EXTERNAL_SS_MASK)) {
522 			atombios_disable_ss(rdev, pll_id);
523 			return;
524 		}
525 		args.lvds_ss_2.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
526 		args.lvds_ss_2.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
527 		args.lvds_ss_2.ucSpreadSpectrumStep = ss->step;
528 		args.lvds_ss_2.ucSpreadSpectrumDelay = ss->delay;
529 		args.lvds_ss_2.ucSpreadSpectrumRange = ss->range;
530 		args.lvds_ss_2.ucEnable = enable;
531 	} else {
532 		if (enable == ATOM_DISABLE) {
533 			atombios_disable_ss(rdev, pll_id);
534 			return;
535 		}
536 		args.lvds_ss.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
537 		args.lvds_ss.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
538 		args.lvds_ss.ucSpreadSpectrumStepSize_Delay = (ss->step & 3) << 2;
539 		args.lvds_ss.ucSpreadSpectrumStepSize_Delay |= (ss->delay & 7) << 4;
540 		args.lvds_ss.ucEnable = enable;
541 	}
542 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
543 }
544 
545 union adjust_pixel_clock {
546 	ADJUST_DISPLAY_PLL_PS_ALLOCATION v1;
547 	ADJUST_DISPLAY_PLL_PS_ALLOCATION_V3 v3;
548 };
549 
550 static u32 atombios_adjust_pll(struct drm_crtc *crtc,
551 			       struct drm_display_mode *mode)
552 {
553 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
554 	struct drm_device *dev = crtc->dev;
555 	struct radeon_device *rdev = dev->dev_private;
556 	struct drm_encoder *encoder = radeon_crtc->encoder;
557 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
558 	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
559 	u32 adjusted_clock = mode->clock;
560 	int encoder_mode = atombios_get_encoder_mode(encoder);
561 	u32 dp_clock = mode->clock;
562 	int bpc = radeon_crtc->bpc;
563 	bool is_duallink = radeon_dig_monitor_is_duallink(encoder, mode->clock);
564 
565 	/* reset the pll flags */
566 	radeon_crtc->pll_flags = 0;
567 
568 	if (ASIC_IS_AVIVO(rdev)) {
569 		if ((rdev->family == CHIP_RS600) ||
570 		    (rdev->family == CHIP_RS690) ||
571 		    (rdev->family == CHIP_RS740))
572 			radeon_crtc->pll_flags |= (/*RADEON_PLL_USE_FRAC_FB_DIV |*/
573 				RADEON_PLL_PREFER_CLOSEST_LOWER);
574 
575 		if (ASIC_IS_DCE32(rdev) && mode->clock > 200000)	/* range limits??? */
576 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
577 		else
578 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
579 
580 		if (rdev->family < CHIP_RV770)
581 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
582 		/* use frac fb div on APUs */
583 		if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
584 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
585 		/* use frac fb div on RS780/RS880 */
586 		if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
587 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
588 		if (ASIC_IS_DCE32(rdev) && mode->clock > 165000)
589 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
590 	} else {
591 		radeon_crtc->pll_flags |= RADEON_PLL_LEGACY;
592 
593 		if (mode->clock > 200000)	/* range limits??? */
594 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
595 		else
596 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
597 	}
598 
599 	if ((radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
600 	    (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) {
601 		if (connector) {
602 			struct radeon_connector *radeon_connector = to_radeon_connector(connector);
603 			struct radeon_connector_atom_dig *dig_connector =
604 				radeon_connector->con_priv;
605 
606 			dp_clock = dig_connector->dp_clock;
607 		}
608 	}
609 
610 	/* use recommended ref_div for ss */
611 	if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
612 		if (radeon_crtc->ss_enabled) {
613 			if (radeon_crtc->ss.refdiv) {
614 				radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
615 				radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv;
616 				if (ASIC_IS_AVIVO(rdev))
617 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
618 			}
619 		}
620 	}
621 
622 	if (ASIC_IS_AVIVO(rdev)) {
623 		/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */
624 		if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)
625 			adjusted_clock = mode->clock * 2;
626 		if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
627 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_CLOSEST_LOWER;
628 		if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
629 			radeon_crtc->pll_flags |= RADEON_PLL_IS_LCD;
630 	} else {
631 		if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
632 			radeon_crtc->pll_flags |= RADEON_PLL_NO_ODD_POST_DIV;
633 		if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS)
634 			radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
635 	}
636 
637 	/* DCE3+ has an AdjustDisplayPll that will adjust the pixel clock
638 	 * accordingly based on the encoder/transmitter to work around
639 	 * special hw requirements.
640 	 */
641 	if (ASIC_IS_DCE3(rdev)) {
642 		union adjust_pixel_clock args;
643 		u8 frev, crev;
644 		int index;
645 
646 		index = GetIndexIntoMasterTable(COMMAND, AdjustDisplayPll);
647 		if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
648 					   &crev))
649 			return adjusted_clock;
650 
651 		memset(&args, 0, sizeof(args));
652 
653 		switch (frev) {
654 		case 1:
655 			switch (crev) {
656 			case 1:
657 			case 2:
658 				args.v1.usPixelClock = cpu_to_le16(mode->clock / 10);
659 				args.v1.ucTransmitterID = radeon_encoder->encoder_id;
660 				args.v1.ucEncodeMode = encoder_mode;
661 				if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage)
662 					args.v1.ucConfig |=
663 						ADJUST_DISPLAY_CONFIG_SS_ENABLE;
664 
665 				atom_execute_table(rdev->mode_info.atom_context,
666 						   index, (uint32_t *)&args);
667 				adjusted_clock = le16_to_cpu(args.v1.usPixelClock) * 10;
668 				break;
669 			case 3:
670 				args.v3.sInput.usPixelClock = cpu_to_le16(mode->clock / 10);
671 				args.v3.sInput.ucTransmitterID = radeon_encoder->encoder_id;
672 				args.v3.sInput.ucEncodeMode = encoder_mode;
673 				args.v3.sInput.ucDispPllConfig = 0;
674 				if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage)
675 					args.v3.sInput.ucDispPllConfig |=
676 						DISPPLL_CONFIG_SS_ENABLE;
677 				if (ENCODER_MODE_IS_DP(encoder_mode)) {
678 					args.v3.sInput.ucDispPllConfig |=
679 						DISPPLL_CONFIG_COHERENT_MODE;
680 					/* 16200 or 27000 */
681 					args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
682 				} else if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
683 					struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
684 					if (encoder_mode == ATOM_ENCODER_MODE_HDMI)
685 						/* deep color support */
686 						args.v3.sInput.usPixelClock =
687 							cpu_to_le16((mode->clock * bpc / 8) / 10);
688 					if (dig->coherent_mode)
689 						args.v3.sInput.ucDispPllConfig |=
690 							DISPPLL_CONFIG_COHERENT_MODE;
691 					if (is_duallink)
692 						args.v3.sInput.ucDispPllConfig |=
693 							DISPPLL_CONFIG_DUAL_LINK;
694 				}
695 				if (radeon_encoder_get_dp_bridge_encoder_id(encoder) !=
696 				    ENCODER_OBJECT_ID_NONE)
697 					args.v3.sInput.ucExtTransmitterID =
698 						radeon_encoder_get_dp_bridge_encoder_id(encoder);
699 				else
700 					args.v3.sInput.ucExtTransmitterID = 0;
701 
702 				atom_execute_table(rdev->mode_info.atom_context,
703 						   index, (uint32_t *)&args);
704 				adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10;
705 				if (args.v3.sOutput.ucRefDiv) {
706 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
707 					radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
708 					radeon_crtc->pll_reference_div = args.v3.sOutput.ucRefDiv;
709 				}
710 				if (args.v3.sOutput.ucPostDiv) {
711 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
712 					radeon_crtc->pll_flags |= RADEON_PLL_USE_POST_DIV;
713 					radeon_crtc->pll_post_div = args.v3.sOutput.ucPostDiv;
714 				}
715 				break;
716 			default:
717 				DRM_ERROR("Unknown table version %d %d\n", frev, crev);
718 				return adjusted_clock;
719 			}
720 			break;
721 		default:
722 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
723 			return adjusted_clock;
724 		}
725 	}
726 	return adjusted_clock;
727 }
728 
729 union set_pixel_clock {
730 	SET_PIXEL_CLOCK_PS_ALLOCATION base;
731 	PIXEL_CLOCK_PARAMETERS v1;
732 	PIXEL_CLOCK_PARAMETERS_V2 v2;
733 	PIXEL_CLOCK_PARAMETERS_V3 v3;
734 	PIXEL_CLOCK_PARAMETERS_V5 v5;
735 	PIXEL_CLOCK_PARAMETERS_V6 v6;
736 };
737 
738 /* on DCE5, make sure the voltage is high enough to support the
739  * required disp clk.
740  */
741 static void atombios_crtc_set_disp_eng_pll(struct radeon_device *rdev,
742 				    u32 dispclk)
743 {
744 	u8 frev, crev;
745 	int index;
746 	union set_pixel_clock args;
747 
748 	memset(&args, 0, sizeof(args));
749 
750 	index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
751 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
752 				   &crev))
753 		return;
754 
755 	switch (frev) {
756 	case 1:
757 		switch (crev) {
758 		case 5:
759 			/* if the default dcpll clock is specified,
760 			 * SetPixelClock provides the dividers
761 			 */
762 			args.v5.ucCRTC = ATOM_CRTC_INVALID;
763 			args.v5.usPixelClock = cpu_to_le16(dispclk);
764 			args.v5.ucPpll = ATOM_DCPLL;
765 			break;
766 		case 6:
767 			/* if the default dcpll clock is specified,
768 			 * SetPixelClock provides the dividers
769 			 */
770 			args.v6.ulDispEngClkFreq = cpu_to_le32(dispclk);
771 			if (ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
772 				args.v6.ucPpll = ATOM_EXT_PLL1;
773 			else if (ASIC_IS_DCE6(rdev))
774 				args.v6.ucPpll = ATOM_PPLL0;
775 			else
776 				args.v6.ucPpll = ATOM_DCPLL;
777 			break;
778 		default:
779 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
780 			return;
781 		}
782 		break;
783 	default:
784 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
785 		return;
786 	}
787 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
788 }
789 
790 static void atombios_crtc_program_pll(struct drm_crtc *crtc,
791 				      u32 crtc_id,
792 				      int pll_id,
793 				      u32 encoder_mode,
794 				      u32 encoder_id,
795 				      u32 clock,
796 				      u32 ref_div,
797 				      u32 fb_div,
798 				      u32 frac_fb_div,
799 				      u32 post_div,
800 				      int bpc,
801 				      bool ss_enabled,
802 				      struct radeon_atom_ss *ss)
803 {
804 	struct drm_device *dev = crtc->dev;
805 	struct radeon_device *rdev = dev->dev_private;
806 	u8 frev, crev;
807 	int index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
808 	union set_pixel_clock args;
809 
810 	memset(&args, 0, sizeof(args));
811 
812 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
813 				   &crev))
814 		return;
815 
816 	switch (frev) {
817 	case 1:
818 		switch (crev) {
819 		case 1:
820 			if (clock == ATOM_DISABLE)
821 				return;
822 			args.v1.usPixelClock = cpu_to_le16(clock / 10);
823 			args.v1.usRefDiv = cpu_to_le16(ref_div);
824 			args.v1.usFbDiv = cpu_to_le16(fb_div);
825 			args.v1.ucFracFbDiv = frac_fb_div;
826 			args.v1.ucPostDiv = post_div;
827 			args.v1.ucPpll = pll_id;
828 			args.v1.ucCRTC = crtc_id;
829 			args.v1.ucRefDivSrc = 1;
830 			break;
831 		case 2:
832 			args.v2.usPixelClock = cpu_to_le16(clock / 10);
833 			args.v2.usRefDiv = cpu_to_le16(ref_div);
834 			args.v2.usFbDiv = cpu_to_le16(fb_div);
835 			args.v2.ucFracFbDiv = frac_fb_div;
836 			args.v2.ucPostDiv = post_div;
837 			args.v2.ucPpll = pll_id;
838 			args.v2.ucCRTC = crtc_id;
839 			args.v2.ucRefDivSrc = 1;
840 			break;
841 		case 3:
842 			args.v3.usPixelClock = cpu_to_le16(clock / 10);
843 			args.v3.usRefDiv = cpu_to_le16(ref_div);
844 			args.v3.usFbDiv = cpu_to_le16(fb_div);
845 			args.v3.ucFracFbDiv = frac_fb_div;
846 			args.v3.ucPostDiv = post_div;
847 			args.v3.ucPpll = pll_id;
848 			if (crtc_id == ATOM_CRTC2)
849 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC2;
850 			else
851 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC1;
852 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
853 				args.v3.ucMiscInfo |= PIXEL_CLOCK_MISC_REF_DIV_SRC;
854 			args.v3.ucTransmitterId = encoder_id;
855 			args.v3.ucEncoderMode = encoder_mode;
856 			break;
857 		case 5:
858 			args.v5.ucCRTC = crtc_id;
859 			args.v5.usPixelClock = cpu_to_le16(clock / 10);
860 			args.v5.ucRefDiv = ref_div;
861 			args.v5.usFbDiv = cpu_to_le16(fb_div);
862 			args.v5.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
863 			args.v5.ucPostDiv = post_div;
864 			args.v5.ucMiscInfo = 0; /* HDMI depth, etc. */
865 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
866 				args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_REF_DIV_SRC;
867 			switch (bpc) {
868 			case 8:
869 			default:
870 				args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_24BPP;
871 				break;
872 			case 10:
873 				args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_30BPP;
874 				break;
875 			}
876 			args.v5.ucTransmitterID = encoder_id;
877 			args.v5.ucEncoderMode = encoder_mode;
878 			args.v5.ucPpll = pll_id;
879 			break;
880 		case 6:
881 			args.v6.ulDispEngClkFreq = cpu_to_le32(crtc_id << 24 | clock / 10);
882 			args.v6.ucRefDiv = ref_div;
883 			args.v6.usFbDiv = cpu_to_le16(fb_div);
884 			args.v6.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
885 			args.v6.ucPostDiv = post_div;
886 			args.v6.ucMiscInfo = 0; /* HDMI depth, etc. */
887 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
888 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_REF_DIV_SRC;
889 			switch (bpc) {
890 			case 8:
891 			default:
892 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_24BPP;
893 				break;
894 			case 10:
895 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_30BPP;
896 				break;
897 			case 12:
898 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_36BPP;
899 				break;
900 			case 16:
901 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_48BPP;
902 				break;
903 			}
904 			args.v6.ucTransmitterID = encoder_id;
905 			args.v6.ucEncoderMode = encoder_mode;
906 			args.v6.ucPpll = pll_id;
907 			break;
908 		default:
909 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
910 			return;
911 		}
912 		break;
913 	default:
914 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
915 		return;
916 	}
917 
918 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
919 }
920 
921 static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
922 {
923 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
924 	struct drm_device *dev = crtc->dev;
925 	struct radeon_device *rdev = dev->dev_private;
926 	struct radeon_encoder *radeon_encoder =
927 		to_radeon_encoder(radeon_crtc->encoder);
928 	int encoder_mode = atombios_get_encoder_mode(radeon_crtc->encoder);
929 
930 	radeon_crtc->bpc = 8;
931 	radeon_crtc->ss_enabled = false;
932 
933 	if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
934 	    (radeon_encoder_get_dp_bridge_encoder_id(radeon_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) {
935 		struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
936 		struct drm_connector *connector =
937 			radeon_get_connector_for_encoder(radeon_crtc->encoder);
938 		struct radeon_connector *radeon_connector =
939 			to_radeon_connector(connector);
940 		struct radeon_connector_atom_dig *dig_connector =
941 			radeon_connector->con_priv;
942 		int dp_clock;
943 		radeon_crtc->bpc = radeon_get_monitor_bpc(connector);
944 
945 		switch (encoder_mode) {
946 		case ATOM_ENCODER_MODE_DP_MST:
947 		case ATOM_ENCODER_MODE_DP:
948 			/* DP/eDP */
949 			dp_clock = dig_connector->dp_clock / 10;
950 			if (ASIC_IS_DCE4(rdev))
951 				radeon_crtc->ss_enabled =
952 					radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss,
953 									 ASIC_INTERNAL_SS_ON_DP,
954 									 dp_clock);
955 			else {
956 				if (dp_clock == 16200) {
957 					radeon_crtc->ss_enabled =
958 						radeon_atombios_get_ppll_ss_info(rdev,
959 										 &radeon_crtc->ss,
960 										 ATOM_DP_SS_ID2);
961 					if (!radeon_crtc->ss_enabled)
962 						radeon_crtc->ss_enabled =
963 							radeon_atombios_get_ppll_ss_info(rdev,
964 											 &radeon_crtc->ss,
965 											 ATOM_DP_SS_ID1);
966 				} else {
967 					radeon_crtc->ss_enabled =
968 						radeon_atombios_get_ppll_ss_info(rdev,
969 										 &radeon_crtc->ss,
970 										 ATOM_DP_SS_ID1);
971 				}
972 				/* disable spread spectrum on DCE3 DP */
973 				radeon_crtc->ss_enabled = false;
974 			}
975 			break;
976 		case ATOM_ENCODER_MODE_LVDS:
977 			if (ASIC_IS_DCE4(rdev))
978 				radeon_crtc->ss_enabled =
979 					radeon_atombios_get_asic_ss_info(rdev,
980 									 &radeon_crtc->ss,
981 									 dig->lcd_ss_id,
982 									 mode->clock / 10);
983 			else
984 				radeon_crtc->ss_enabled =
985 					radeon_atombios_get_ppll_ss_info(rdev,
986 									 &radeon_crtc->ss,
987 									 dig->lcd_ss_id);
988 			break;
989 		case ATOM_ENCODER_MODE_DVI:
990 			if (ASIC_IS_DCE4(rdev))
991 				radeon_crtc->ss_enabled =
992 					radeon_atombios_get_asic_ss_info(rdev,
993 									 &radeon_crtc->ss,
994 									 ASIC_INTERNAL_SS_ON_TMDS,
995 									 mode->clock / 10);
996 			break;
997 		case ATOM_ENCODER_MODE_HDMI:
998 			if (ASIC_IS_DCE4(rdev))
999 				radeon_crtc->ss_enabled =
1000 					radeon_atombios_get_asic_ss_info(rdev,
1001 									 &radeon_crtc->ss,
1002 									 ASIC_INTERNAL_SS_ON_HDMI,
1003 									 mode->clock / 10);
1004 			break;
1005 		default:
1006 			break;
1007 		}
1008 	}
1009 
1010 	/* adjust pixel clock as needed */
1011 	radeon_crtc->adjusted_clock = atombios_adjust_pll(crtc, mode);
1012 
1013 	return true;
1014 }
1015 
1016 static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
1017 {
1018 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1019 	struct drm_device *dev = crtc->dev;
1020 	struct radeon_device *rdev = dev->dev_private;
1021 	struct radeon_encoder *radeon_encoder =
1022 		to_radeon_encoder(radeon_crtc->encoder);
1023 	u32 pll_clock = mode->clock;
1024 	u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0;
1025 	struct radeon_pll *pll;
1026 	int encoder_mode = atombios_get_encoder_mode(radeon_crtc->encoder);
1027 
1028 	switch (radeon_crtc->pll_id) {
1029 	case ATOM_PPLL1:
1030 		pll = &rdev->clock.p1pll;
1031 		break;
1032 	case ATOM_PPLL2:
1033 		pll = &rdev->clock.p2pll;
1034 		break;
1035 	case ATOM_DCPLL:
1036 	case ATOM_PPLL_INVALID:
1037 	default:
1038 		pll = &rdev->clock.dcpll;
1039 		break;
1040 	}
1041 
1042 	/* update pll params */
1043 	pll->flags = radeon_crtc->pll_flags;
1044 	pll->reference_div = radeon_crtc->pll_reference_div;
1045 	pll->post_div = radeon_crtc->pll_post_div;
1046 
1047 	if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
1048 		/* TV seems to prefer the legacy algo on some boards */
1049 		radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock,
1050 					  &fb_div, &frac_fb_div, &ref_div, &post_div);
1051 	else if (ASIC_IS_AVIVO(rdev))
1052 		radeon_compute_pll_avivo(pll, radeon_crtc->adjusted_clock, &pll_clock,
1053 					 &fb_div, &frac_fb_div, &ref_div, &post_div);
1054 	else
1055 		radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock,
1056 					  &fb_div, &frac_fb_div, &ref_div, &post_div);
1057 
1058 	atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id,
1059 				 radeon_crtc->crtc_id, &radeon_crtc->ss);
1060 
1061 	atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
1062 				  encoder_mode, radeon_encoder->encoder_id, mode->clock,
1063 				  ref_div, fb_div, frac_fb_div, post_div,
1064 				  radeon_crtc->bpc, radeon_crtc->ss_enabled, &radeon_crtc->ss);
1065 
1066 	if (radeon_crtc->ss_enabled) {
1067 		/* calculate ss amount and step size */
1068 		if (ASIC_IS_DCE4(rdev)) {
1069 			u32 step_size;
1070 			u32 amount = (((fb_div * 10) + frac_fb_div) *
1071 				      (u32)radeon_crtc->ss.percentage) /
1072 				(100 * (u32)radeon_crtc->ss.percentage_divider);
1073 			radeon_crtc->ss.amount = (amount / 10) & ATOM_PPLL_SS_AMOUNT_V2_FBDIV_MASK;
1074 			radeon_crtc->ss.amount |= ((amount - (amount / 10)) << ATOM_PPLL_SS_AMOUNT_V2_NFRAC_SHIFT) &
1075 				ATOM_PPLL_SS_AMOUNT_V2_NFRAC_MASK;
1076 			if (radeon_crtc->ss.type & ATOM_PPLL_SS_TYPE_V2_CENTRE_SPREAD)
1077 				step_size = (4 * amount * ref_div * ((u32)radeon_crtc->ss.rate * 2048)) /
1078 					(125 * 25 * pll->reference_freq / 100);
1079 			else
1080 				step_size = (2 * amount * ref_div * ((u32)radeon_crtc->ss.rate * 2048)) /
1081 					(125 * 25 * pll->reference_freq / 100);
1082 			radeon_crtc->ss.step = step_size;
1083 		}
1084 
1085 		atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id,
1086 					 radeon_crtc->crtc_id, &radeon_crtc->ss);
1087 	}
1088 }
1089 
1090 static int dce4_crtc_do_set_base(struct drm_crtc *crtc,
1091 				 struct drm_framebuffer *fb,
1092 				 int x, int y, int atomic)
1093 {
1094 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1095 	struct drm_device *dev = crtc->dev;
1096 	struct radeon_device *rdev = dev->dev_private;
1097 	struct radeon_framebuffer *radeon_fb;
1098 	struct drm_framebuffer *target_fb;
1099 	struct drm_gem_object *obj;
1100 	struct radeon_bo *rbo;
1101 	uint64_t fb_location;
1102 	uint32_t fb_format, fb_pitch_pixels, tiling_flags;
1103 	unsigned bankw, bankh, mtaspect, tile_split;
1104 	u32 fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_NONE);
1105 	u32 tmp, viewport_w, viewport_h;
1106 	int r;
1107 
1108 	/* no fb bound */
1109 	if (!atomic && !crtc->primary->fb) {
1110 		DRM_DEBUG_KMS("No FB bound\n");
1111 		return 0;
1112 	}
1113 
1114 	if (atomic) {
1115 		radeon_fb = to_radeon_framebuffer(fb);
1116 		target_fb = fb;
1117 	}
1118 	else {
1119 		radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
1120 		target_fb = crtc->primary->fb;
1121 	}
1122 
1123 	/* If atomic, assume fb object is pinned & idle & fenced and
1124 	 * just update base pointers
1125 	 */
1126 	obj = radeon_fb->obj;
1127 	rbo = gem_to_radeon_bo(obj);
1128 	r = radeon_bo_reserve(rbo, false);
1129 	if (unlikely(r != 0))
1130 		return r;
1131 
1132 	if (atomic)
1133 		fb_location = radeon_bo_gpu_offset(rbo);
1134 	else {
1135 		r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &fb_location);
1136 		if (unlikely(r != 0)) {
1137 			radeon_bo_unreserve(rbo);
1138 			return -EINVAL;
1139 		}
1140 	}
1141 
1142 	radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
1143 	radeon_bo_unreserve(rbo);
1144 
1145 	switch (target_fb->bits_per_pixel) {
1146 	case 8:
1147 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_8BPP) |
1148 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_INDEXED));
1149 		break;
1150 	case 15:
1151 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1152 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB1555));
1153 		break;
1154 	case 16:
1155 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1156 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB565));
1157 #ifdef __BIG_ENDIAN
1158 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN16);
1159 #endif
1160 		break;
1161 	case 24:
1162 	case 32:
1163 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_32BPP) |
1164 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB8888));
1165 #ifdef __BIG_ENDIAN
1166 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN32);
1167 #endif
1168 		break;
1169 	default:
1170 		DRM_ERROR("Unsupported screen depth %d\n",
1171 			  target_fb->bits_per_pixel);
1172 		return -EINVAL;
1173 	}
1174 
1175 	if (tiling_flags & RADEON_TILING_MACRO) {
1176 		evergreen_tiling_fields(tiling_flags, &bankw, &bankh, &mtaspect, &tile_split);
1177 
1178 		/* Set NUM_BANKS. */
1179 		if (rdev->family >= CHIP_TAHITI) {
1180 			unsigned index, num_banks;
1181 
1182 			if (rdev->family >= CHIP_BONAIRE) {
1183 				unsigned tileb, tile_split_bytes;
1184 
1185 				/* Calculate the macrotile mode index. */
1186 				tile_split_bytes = 64 << tile_split;
1187 				tileb = 8 * 8 * target_fb->bits_per_pixel / 8;
1188 				tileb = min(tile_split_bytes, tileb);
1189 
1190 				for (index = 0; tileb > 64; index++)
1191 					tileb >>= 1;
1192 
1193 				if (index >= 16) {
1194 					DRM_ERROR("Wrong screen bpp (%u) or tile split (%u)\n",
1195 						  target_fb->bits_per_pixel, tile_split);
1196 					return -EINVAL;
1197 				}
1198 
1199 				num_banks = (rdev->config.cik.macrotile_mode_array[index] >> 6) & 0x3;
1200 			} else {
1201 				switch (target_fb->bits_per_pixel) {
1202 				case 8:
1203 					index = 10;
1204 					break;
1205 				case 16:
1206 					index = SI_TILE_MODE_COLOR_2D_SCANOUT_16BPP;
1207 					break;
1208 				default:
1209 				case 32:
1210 					index = SI_TILE_MODE_COLOR_2D_SCANOUT_32BPP;
1211 					break;
1212 				}
1213 
1214 				num_banks = (rdev->config.si.tile_mode_array[index] >> 20) & 0x3;
1215 			}
1216 
1217 			fb_format |= EVERGREEN_GRPH_NUM_BANKS(num_banks);
1218 		} else {
1219 			/* NI and older. */
1220 			if (rdev->family >= CHIP_CAYMAN)
1221 				tmp = rdev->config.cayman.tile_config;
1222 			else
1223 				tmp = rdev->config.evergreen.tile_config;
1224 
1225 			switch ((tmp & 0xf0) >> 4) {
1226 			case 0: /* 4 banks */
1227 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_4_BANK);
1228 				break;
1229 			case 1: /* 8 banks */
1230 			default:
1231 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_8_BANK);
1232 				break;
1233 			case 2: /* 16 banks */
1234 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_16_BANK);
1235 				break;
1236 			}
1237 		}
1238 
1239 		fb_format |= EVERGREEN_GRPH_ARRAY_MODE(EVERGREEN_GRPH_ARRAY_2D_TILED_THIN1);
1240 		fb_format |= EVERGREEN_GRPH_TILE_SPLIT(tile_split);
1241 		fb_format |= EVERGREEN_GRPH_BANK_WIDTH(bankw);
1242 		fb_format |= EVERGREEN_GRPH_BANK_HEIGHT(bankh);
1243 		fb_format |= EVERGREEN_GRPH_MACRO_TILE_ASPECT(mtaspect);
1244 		if (rdev->family >= CHIP_BONAIRE) {
1245 			/* XXX need to know more about the surface tiling mode */
1246 			fb_format |= CIK_GRPH_MICRO_TILE_MODE(CIK_DISPLAY_MICRO_TILING);
1247 		}
1248 	} else if (tiling_flags & RADEON_TILING_MICRO)
1249 		fb_format |= EVERGREEN_GRPH_ARRAY_MODE(EVERGREEN_GRPH_ARRAY_1D_TILED_THIN1);
1250 
1251 	if (rdev->family >= CHIP_BONAIRE) {
1252 		/* Read the pipe config from the 2D TILED SCANOUT mode.
1253 		 * It should be the same for the other modes too, but not all
1254 		 * modes set the pipe config field. */
1255 		u32 pipe_config = (rdev->config.cik.tile_mode_array[10] >> 6) & 0x1f;
1256 
1257 		fb_format |= CIK_GRPH_PIPE_CONFIG(pipe_config);
1258 	} else if ((rdev->family == CHIP_TAHITI) ||
1259 		   (rdev->family == CHIP_PITCAIRN))
1260 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P8_32x32_8x16);
1261 	else if ((rdev->family == CHIP_VERDE) ||
1262 		 (rdev->family == CHIP_OLAND) ||
1263 		 (rdev->family == CHIP_HAINAN)) /* for completeness.  HAINAN has no display hw */
1264 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P4_8x16);
1265 
1266 	switch (radeon_crtc->crtc_id) {
1267 	case 0:
1268 		WREG32(AVIVO_D1VGA_CONTROL, 0);
1269 		break;
1270 	case 1:
1271 		WREG32(AVIVO_D2VGA_CONTROL, 0);
1272 		break;
1273 	case 2:
1274 		WREG32(EVERGREEN_D3VGA_CONTROL, 0);
1275 		break;
1276 	case 3:
1277 		WREG32(EVERGREEN_D4VGA_CONTROL, 0);
1278 		break;
1279 	case 4:
1280 		WREG32(EVERGREEN_D5VGA_CONTROL, 0);
1281 		break;
1282 	case 5:
1283 		WREG32(EVERGREEN_D6VGA_CONTROL, 0);
1284 		break;
1285 	default:
1286 		break;
1287 	}
1288 
1289 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
1290 	       upper_32_bits(fb_location));
1291 	WREG32(EVERGREEN_GRPH_SECONDARY_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
1292 	       upper_32_bits(fb_location));
1293 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1294 	       (u32)fb_location & EVERGREEN_GRPH_SURFACE_ADDRESS_MASK);
1295 	WREG32(EVERGREEN_GRPH_SECONDARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1296 	       (u32) fb_location & EVERGREEN_GRPH_SURFACE_ADDRESS_MASK);
1297 	WREG32(EVERGREEN_GRPH_CONTROL + radeon_crtc->crtc_offset, fb_format);
1298 	WREG32(EVERGREEN_GRPH_SWAP_CONTROL + radeon_crtc->crtc_offset, fb_swap);
1299 
1300 	WREG32(EVERGREEN_GRPH_SURFACE_OFFSET_X + radeon_crtc->crtc_offset, 0);
1301 	WREG32(EVERGREEN_GRPH_SURFACE_OFFSET_Y + radeon_crtc->crtc_offset, 0);
1302 	WREG32(EVERGREEN_GRPH_X_START + radeon_crtc->crtc_offset, 0);
1303 	WREG32(EVERGREEN_GRPH_Y_START + radeon_crtc->crtc_offset, 0);
1304 	WREG32(EVERGREEN_GRPH_X_END + radeon_crtc->crtc_offset, target_fb->width);
1305 	WREG32(EVERGREEN_GRPH_Y_END + radeon_crtc->crtc_offset, target_fb->height);
1306 
1307 	fb_pitch_pixels = target_fb->pitches[0] / (target_fb->bits_per_pixel / 8);
1308 	WREG32(EVERGREEN_GRPH_PITCH + radeon_crtc->crtc_offset, fb_pitch_pixels);
1309 	WREG32(EVERGREEN_GRPH_ENABLE + radeon_crtc->crtc_offset, 1);
1310 
1311 	if (rdev->family >= CHIP_BONAIRE)
1312 		WREG32(CIK_LB_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1313 		       target_fb->height);
1314 	else
1315 		WREG32(EVERGREEN_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1316 		       target_fb->height);
1317 	x &= ~3;
1318 	y &= ~1;
1319 	WREG32(EVERGREEN_VIEWPORT_START + radeon_crtc->crtc_offset,
1320 	       (x << 16) | y);
1321 	viewport_w = crtc->mode.hdisplay;
1322 	viewport_h = (crtc->mode.vdisplay + 1) & ~1;
1323 	WREG32(EVERGREEN_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
1324 	       (viewport_w << 16) | viewport_h);
1325 
1326 	/* pageflip setup */
1327 	/* make sure flip is at vb rather than hb */
1328 	tmp = RREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset);
1329 	tmp &= ~EVERGREEN_GRPH_SURFACE_UPDATE_H_RETRACE_EN;
1330 	WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, tmp);
1331 
1332 	/* set pageflip to happen anywhere in vblank interval */
1333 	WREG32(EVERGREEN_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 0);
1334 
1335 	if (!atomic && fb && fb != crtc->primary->fb) {
1336 		radeon_fb = to_radeon_framebuffer(fb);
1337 		rbo = gem_to_radeon_bo(radeon_fb->obj);
1338 		r = radeon_bo_reserve(rbo, false);
1339 		if (unlikely(r != 0))
1340 			return r;
1341 		radeon_bo_unpin(rbo);
1342 		radeon_bo_unreserve(rbo);
1343 	}
1344 
1345 	/* Bytes per pixel may have changed */
1346 	radeon_bandwidth_update(rdev);
1347 
1348 	return 0;
1349 }
1350 
1351 static int avivo_crtc_do_set_base(struct drm_crtc *crtc,
1352 				  struct drm_framebuffer *fb,
1353 				  int x, int y, int atomic)
1354 {
1355 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1356 	struct drm_device *dev = crtc->dev;
1357 	struct radeon_device *rdev = dev->dev_private;
1358 	struct radeon_framebuffer *radeon_fb;
1359 	struct drm_gem_object *obj;
1360 	struct radeon_bo *rbo;
1361 	struct drm_framebuffer *target_fb;
1362 	uint64_t fb_location;
1363 	uint32_t fb_format, fb_pitch_pixels, tiling_flags;
1364 	u32 fb_swap = R600_D1GRPH_SWAP_ENDIAN_NONE;
1365 	u32 tmp, viewport_w, viewport_h;
1366 	int r;
1367 
1368 	/* no fb bound */
1369 	if (!atomic && !crtc->primary->fb) {
1370 		DRM_DEBUG_KMS("No FB bound\n");
1371 		return 0;
1372 	}
1373 
1374 	if (atomic) {
1375 		radeon_fb = to_radeon_framebuffer(fb);
1376 		target_fb = fb;
1377 	}
1378 	else {
1379 		radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
1380 		target_fb = crtc->primary->fb;
1381 	}
1382 
1383 	obj = radeon_fb->obj;
1384 	rbo = gem_to_radeon_bo(obj);
1385 	r = radeon_bo_reserve(rbo, false);
1386 	if (unlikely(r != 0))
1387 		return r;
1388 
1389 	/* If atomic, assume fb object is pinned & idle & fenced and
1390 	 * just update base pointers
1391 	 */
1392 	if (atomic)
1393 		fb_location = radeon_bo_gpu_offset(rbo);
1394 	else {
1395 		r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &fb_location);
1396 		if (unlikely(r != 0)) {
1397 			radeon_bo_unreserve(rbo);
1398 			return -EINVAL;
1399 		}
1400 	}
1401 	radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
1402 	radeon_bo_unreserve(rbo);
1403 
1404 	switch (target_fb->bits_per_pixel) {
1405 	case 8:
1406 		fb_format =
1407 		    AVIVO_D1GRPH_CONTROL_DEPTH_8BPP |
1408 		    AVIVO_D1GRPH_CONTROL_8BPP_INDEXED;
1409 		break;
1410 	case 15:
1411 		fb_format =
1412 		    AVIVO_D1GRPH_CONTROL_DEPTH_16BPP |
1413 		    AVIVO_D1GRPH_CONTROL_16BPP_ARGB1555;
1414 		break;
1415 	case 16:
1416 		fb_format =
1417 		    AVIVO_D1GRPH_CONTROL_DEPTH_16BPP |
1418 		    AVIVO_D1GRPH_CONTROL_16BPP_RGB565;
1419 #ifdef __BIG_ENDIAN
1420 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_16BIT;
1421 #endif
1422 		break;
1423 	case 24:
1424 	case 32:
1425 		fb_format =
1426 		    AVIVO_D1GRPH_CONTROL_DEPTH_32BPP |
1427 		    AVIVO_D1GRPH_CONTROL_32BPP_ARGB8888;
1428 #ifdef __BIG_ENDIAN
1429 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_32BIT;
1430 #endif
1431 		break;
1432 	default:
1433 		DRM_ERROR("Unsupported screen depth %d\n",
1434 			  target_fb->bits_per_pixel);
1435 		return -EINVAL;
1436 	}
1437 
1438 	if (rdev->family >= CHIP_R600) {
1439 		if (tiling_flags & RADEON_TILING_MACRO)
1440 			fb_format |= R600_D1GRPH_ARRAY_MODE_2D_TILED_THIN1;
1441 		else if (tiling_flags & RADEON_TILING_MICRO)
1442 			fb_format |= R600_D1GRPH_ARRAY_MODE_1D_TILED_THIN1;
1443 	} else {
1444 		if (tiling_flags & RADEON_TILING_MACRO)
1445 			fb_format |= AVIVO_D1GRPH_MACRO_ADDRESS_MODE;
1446 
1447 		if (tiling_flags & RADEON_TILING_MICRO)
1448 			fb_format |= AVIVO_D1GRPH_TILED;
1449 	}
1450 
1451 	if (radeon_crtc->crtc_id == 0)
1452 		WREG32(AVIVO_D1VGA_CONTROL, 0);
1453 	else
1454 		WREG32(AVIVO_D2VGA_CONTROL, 0);
1455 
1456 	if (rdev->family >= CHIP_RV770) {
1457 		if (radeon_crtc->crtc_id) {
1458 			WREG32(R700_D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1459 			WREG32(R700_D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1460 		} else {
1461 			WREG32(R700_D1GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1462 			WREG32(R700_D1GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1463 		}
1464 	}
1465 	WREG32(AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1466 	       (u32) fb_location);
1467 	WREG32(AVIVO_D1GRPH_SECONDARY_SURFACE_ADDRESS +
1468 	       radeon_crtc->crtc_offset, (u32) fb_location);
1469 	WREG32(AVIVO_D1GRPH_CONTROL + radeon_crtc->crtc_offset, fb_format);
1470 	if (rdev->family >= CHIP_R600)
1471 		WREG32(R600_D1GRPH_SWAP_CONTROL + radeon_crtc->crtc_offset, fb_swap);
1472 
1473 	WREG32(AVIVO_D1GRPH_SURFACE_OFFSET_X + radeon_crtc->crtc_offset, 0);
1474 	WREG32(AVIVO_D1GRPH_SURFACE_OFFSET_Y + radeon_crtc->crtc_offset, 0);
1475 	WREG32(AVIVO_D1GRPH_X_START + radeon_crtc->crtc_offset, 0);
1476 	WREG32(AVIVO_D1GRPH_Y_START + radeon_crtc->crtc_offset, 0);
1477 	WREG32(AVIVO_D1GRPH_X_END + radeon_crtc->crtc_offset, target_fb->width);
1478 	WREG32(AVIVO_D1GRPH_Y_END + radeon_crtc->crtc_offset, target_fb->height);
1479 
1480 	fb_pitch_pixels = target_fb->pitches[0] / (target_fb->bits_per_pixel / 8);
1481 	WREG32(AVIVO_D1GRPH_PITCH + radeon_crtc->crtc_offset, fb_pitch_pixels);
1482 	WREG32(AVIVO_D1GRPH_ENABLE + radeon_crtc->crtc_offset, 1);
1483 
1484 	WREG32(AVIVO_D1MODE_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1485 	       target_fb->height);
1486 	x &= ~3;
1487 	y &= ~1;
1488 	WREG32(AVIVO_D1MODE_VIEWPORT_START + radeon_crtc->crtc_offset,
1489 	       (x << 16) | y);
1490 	viewport_w = crtc->mode.hdisplay;
1491 	viewport_h = (crtc->mode.vdisplay + 1) & ~1;
1492 	WREG32(AVIVO_D1MODE_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
1493 	       (viewport_w << 16) | viewport_h);
1494 
1495 	/* pageflip setup */
1496 	/* make sure flip is at vb rather than hb */
1497 	tmp = RREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset);
1498 	tmp &= ~AVIVO_D1GRPH_SURFACE_UPDATE_H_RETRACE_EN;
1499 	WREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, tmp);
1500 
1501 	/* set pageflip to happen anywhere in vblank interval */
1502 	WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 0);
1503 
1504 	if (!atomic && fb && fb != crtc->primary->fb) {
1505 		radeon_fb = to_radeon_framebuffer(fb);
1506 		rbo = gem_to_radeon_bo(radeon_fb->obj);
1507 		r = radeon_bo_reserve(rbo, false);
1508 		if (unlikely(r != 0))
1509 			return r;
1510 		radeon_bo_unpin(rbo);
1511 		radeon_bo_unreserve(rbo);
1512 	}
1513 
1514 	/* Bytes per pixel may have changed */
1515 	radeon_bandwidth_update(rdev);
1516 
1517 	return 0;
1518 }
1519 
1520 int atombios_crtc_set_base(struct drm_crtc *crtc, int x, int y,
1521 			   struct drm_framebuffer *old_fb)
1522 {
1523 	struct drm_device *dev = crtc->dev;
1524 	struct radeon_device *rdev = dev->dev_private;
1525 
1526 	if (ASIC_IS_DCE4(rdev))
1527 		return dce4_crtc_do_set_base(crtc, old_fb, x, y, 0);
1528 	else if (ASIC_IS_AVIVO(rdev))
1529 		return avivo_crtc_do_set_base(crtc, old_fb, x, y, 0);
1530 	else
1531 		return radeon_crtc_do_set_base(crtc, old_fb, x, y, 0);
1532 }
1533 
1534 int atombios_crtc_set_base_atomic(struct drm_crtc *crtc,
1535                                   struct drm_framebuffer *fb,
1536 				  int x, int y, enum mode_set_atomic state)
1537 {
1538        struct drm_device *dev = crtc->dev;
1539        struct radeon_device *rdev = dev->dev_private;
1540 
1541 	if (ASIC_IS_DCE4(rdev))
1542 		return dce4_crtc_do_set_base(crtc, fb, x, y, 1);
1543 	else if (ASIC_IS_AVIVO(rdev))
1544 		return avivo_crtc_do_set_base(crtc, fb, x, y, 1);
1545 	else
1546 		return radeon_crtc_do_set_base(crtc, fb, x, y, 1);
1547 }
1548 
1549 /* properly set additional regs when using atombios */
1550 static void radeon_legacy_atom_fixup(struct drm_crtc *crtc)
1551 {
1552 	struct drm_device *dev = crtc->dev;
1553 	struct radeon_device *rdev = dev->dev_private;
1554 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1555 	u32 disp_merge_cntl;
1556 
1557 	switch (radeon_crtc->crtc_id) {
1558 	case 0:
1559 		disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
1560 		disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
1561 		WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
1562 		break;
1563 	case 1:
1564 		disp_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
1565 		disp_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
1566 		WREG32(RADEON_DISP2_MERGE_CNTL, disp_merge_cntl);
1567 		WREG32(RADEON_FP_H2_SYNC_STRT_WID,   RREG32(RADEON_CRTC2_H_SYNC_STRT_WID));
1568 		WREG32(RADEON_FP_V2_SYNC_STRT_WID,   RREG32(RADEON_CRTC2_V_SYNC_STRT_WID));
1569 		break;
1570 	}
1571 }
1572 
1573 /**
1574  * radeon_get_pll_use_mask - look up a mask of which pplls are in use
1575  *
1576  * @crtc: drm crtc
1577  *
1578  * Returns the mask of which PPLLs (Pixel PLLs) are in use.
1579  */
1580 static u32 radeon_get_pll_use_mask(struct drm_crtc *crtc)
1581 {
1582 	struct drm_device *dev = crtc->dev;
1583 	struct drm_crtc *test_crtc;
1584 	struct radeon_crtc *test_radeon_crtc;
1585 	u32 pll_in_use = 0;
1586 
1587 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1588 		if (crtc == test_crtc)
1589 			continue;
1590 
1591 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1592 		if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1593 			pll_in_use |= (1 << test_radeon_crtc->pll_id);
1594 	}
1595 	return pll_in_use;
1596 }
1597 
1598 /**
1599  * radeon_get_shared_dp_ppll - return the PPLL used by another crtc for DP
1600  *
1601  * @crtc: drm crtc
1602  *
1603  * Returns the PPLL (Pixel PLL) used by another crtc/encoder which is
1604  * also in DP mode.  For DP, a single PPLL can be used for all DP
1605  * crtcs/encoders.
1606  */
1607 static int radeon_get_shared_dp_ppll(struct drm_crtc *crtc)
1608 {
1609 	struct drm_device *dev = crtc->dev;
1610 	struct drm_crtc *test_crtc;
1611 	struct radeon_crtc *test_radeon_crtc;
1612 
1613 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1614 		if (crtc == test_crtc)
1615 			continue;
1616 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1617 		if (test_radeon_crtc->encoder &&
1618 		    ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
1619 			/* for DP use the same PLL for all */
1620 			if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1621 				return test_radeon_crtc->pll_id;
1622 		}
1623 	}
1624 	return ATOM_PPLL_INVALID;
1625 }
1626 
1627 /**
1628  * radeon_get_shared_nondp_ppll - return the PPLL used by another non-DP crtc
1629  *
1630  * @crtc: drm crtc
1631  * @encoder: drm encoder
1632  *
1633  * Returns the PPLL (Pixel PLL) used by another non-DP crtc/encoder which can
1634  * be shared (i.e., same clock).
1635  */
1636 static int radeon_get_shared_nondp_ppll(struct drm_crtc *crtc)
1637 {
1638 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1639 	struct drm_device *dev = crtc->dev;
1640 	struct drm_crtc *test_crtc;
1641 	struct radeon_crtc *test_radeon_crtc;
1642 	u32 adjusted_clock, test_adjusted_clock;
1643 
1644 	adjusted_clock = radeon_crtc->adjusted_clock;
1645 
1646 	if (adjusted_clock == 0)
1647 		return ATOM_PPLL_INVALID;
1648 
1649 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1650 		if (crtc == test_crtc)
1651 			continue;
1652 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1653 		if (test_radeon_crtc->encoder &&
1654 		    !ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
1655 			/* check if we are already driving this connector with another crtc */
1656 			if (test_radeon_crtc->connector == radeon_crtc->connector) {
1657 				/* if we are, return that pll */
1658 				if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1659 					return test_radeon_crtc->pll_id;
1660 			}
1661 			/* for non-DP check the clock */
1662 			test_adjusted_clock = test_radeon_crtc->adjusted_clock;
1663 			if ((crtc->mode.clock == test_crtc->mode.clock) &&
1664 			    (adjusted_clock == test_adjusted_clock) &&
1665 			    (radeon_crtc->ss_enabled == test_radeon_crtc->ss_enabled) &&
1666 			    (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID))
1667 				return test_radeon_crtc->pll_id;
1668 		}
1669 	}
1670 	return ATOM_PPLL_INVALID;
1671 }
1672 
1673 /**
1674  * radeon_atom_pick_pll - Allocate a PPLL for use by the crtc.
1675  *
1676  * @crtc: drm crtc
1677  *
1678  * Returns the PPLL (Pixel PLL) to be used by the crtc.  For DP monitors
1679  * a single PPLL can be used for all DP crtcs/encoders.  For non-DP
1680  * monitors a dedicated PPLL must be used.  If a particular board has
1681  * an external DP PLL, return ATOM_PPLL_INVALID to skip PLL programming
1682  * as there is no need to program the PLL itself.  If we are not able to
1683  * allocate a PLL, return ATOM_PPLL_INVALID to skip PLL programming to
1684  * avoid messing up an existing monitor.
1685  *
1686  * Asic specific PLL information
1687  *
1688  * DCE 8.x
1689  * KB/KV
1690  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP)
1691  * CI
1692  * - PPLL0, PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1693  *
1694  * DCE 6.1
1695  * - PPLL2 is only available to UNIPHYA (both DP and non-DP)
1696  * - PPLL0, PPLL1 are available for UNIPHYB/C/D/E/F (both DP and non-DP)
1697  *
1698  * DCE 6.0
1699  * - PPLL0 is available to all UNIPHY (DP only)
1700  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1701  *
1702  * DCE 5.0
1703  * - DCPLL is available to all UNIPHY (DP only)
1704  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1705  *
1706  * DCE 3.0/4.0/4.1
1707  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1708  *
1709  */
1710 static int radeon_atom_pick_pll(struct drm_crtc *crtc)
1711 {
1712 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1713 	struct drm_device *dev = crtc->dev;
1714 	struct radeon_device *rdev = dev->dev_private;
1715 	struct radeon_encoder *radeon_encoder =
1716 		to_radeon_encoder(radeon_crtc->encoder);
1717 	u32 pll_in_use;
1718 	int pll;
1719 
1720 	if (ASIC_IS_DCE8(rdev)) {
1721 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1722 			if (rdev->clock.dp_extclk)
1723 				/* skip PPLL programming if using ext clock */
1724 				return ATOM_PPLL_INVALID;
1725 			else {
1726 				/* use the same PPLL for all DP monitors */
1727 				pll = radeon_get_shared_dp_ppll(crtc);
1728 				if (pll != ATOM_PPLL_INVALID)
1729 					return pll;
1730 			}
1731 		} else {
1732 			/* use the same PPLL for all monitors with the same clock */
1733 			pll = radeon_get_shared_nondp_ppll(crtc);
1734 			if (pll != ATOM_PPLL_INVALID)
1735 				return pll;
1736 		}
1737 		/* otherwise, pick one of the plls */
1738 		if ((rdev->family == CHIP_KAVERI) ||
1739 		    (rdev->family == CHIP_KABINI) ||
1740 		    (rdev->family == CHIP_MULLINS)) {
1741 			/* KB/KV/ML has PPLL1 and PPLL2 */
1742 			pll_in_use = radeon_get_pll_use_mask(crtc);
1743 			if (!(pll_in_use & (1 << ATOM_PPLL2)))
1744 				return ATOM_PPLL2;
1745 			if (!(pll_in_use & (1 << ATOM_PPLL1)))
1746 				return ATOM_PPLL1;
1747 			DRM_ERROR("unable to allocate a PPLL\n");
1748 			return ATOM_PPLL_INVALID;
1749 		} else {
1750 			/* CI has PPLL0, PPLL1, and PPLL2 */
1751 			pll_in_use = radeon_get_pll_use_mask(crtc);
1752 			if (!(pll_in_use & (1 << ATOM_PPLL2)))
1753 				return ATOM_PPLL2;
1754 			if (!(pll_in_use & (1 << ATOM_PPLL1)))
1755 				return ATOM_PPLL1;
1756 			if (!(pll_in_use & (1 << ATOM_PPLL0)))
1757 				return ATOM_PPLL0;
1758 			DRM_ERROR("unable to allocate a PPLL\n");
1759 			return ATOM_PPLL_INVALID;
1760 		}
1761 	} else if (ASIC_IS_DCE61(rdev)) {
1762 		struct radeon_encoder_atom_dig *dig =
1763 			radeon_encoder->enc_priv;
1764 
1765 		if ((radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_UNIPHY) &&
1766 		    (dig->linkb == false))
1767 			/* UNIPHY A uses PPLL2 */
1768 			return ATOM_PPLL2;
1769 		else if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1770 			/* UNIPHY B/C/D/E/F */
1771 			if (rdev->clock.dp_extclk)
1772 				/* skip PPLL programming if using ext clock */
1773 				return ATOM_PPLL_INVALID;
1774 			else {
1775 				/* use the same PPLL for all DP monitors */
1776 				pll = radeon_get_shared_dp_ppll(crtc);
1777 				if (pll != ATOM_PPLL_INVALID)
1778 					return pll;
1779 			}
1780 		} else {
1781 			/* use the same PPLL for all monitors with the same clock */
1782 			pll = radeon_get_shared_nondp_ppll(crtc);
1783 			if (pll != ATOM_PPLL_INVALID)
1784 				return pll;
1785 		}
1786 		/* UNIPHY B/C/D/E/F */
1787 		pll_in_use = radeon_get_pll_use_mask(crtc);
1788 		if (!(pll_in_use & (1 << ATOM_PPLL0)))
1789 			return ATOM_PPLL0;
1790 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
1791 			return ATOM_PPLL1;
1792 		DRM_ERROR("unable to allocate a PPLL\n");
1793 		return ATOM_PPLL_INVALID;
1794 	} else if (ASIC_IS_DCE41(rdev)) {
1795 		/* Don't share PLLs on DCE4.1 chips */
1796 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1797 			if (rdev->clock.dp_extclk)
1798 				/* skip PPLL programming if using ext clock */
1799 				return ATOM_PPLL_INVALID;
1800 		}
1801 		pll_in_use = radeon_get_pll_use_mask(crtc);
1802 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
1803 			return ATOM_PPLL1;
1804 		if (!(pll_in_use & (1 << ATOM_PPLL2)))
1805 			return ATOM_PPLL2;
1806 		DRM_ERROR("unable to allocate a PPLL\n");
1807 		return ATOM_PPLL_INVALID;
1808 	} else if (ASIC_IS_DCE4(rdev)) {
1809 		/* in DP mode, the DP ref clock can come from PPLL, DCPLL, or ext clock,
1810 		 * depending on the asic:
1811 		 * DCE4: PPLL or ext clock
1812 		 * DCE5: PPLL, DCPLL, or ext clock
1813 		 * DCE6: PPLL, PPLL0, or ext clock
1814 		 *
1815 		 * Setting ATOM_PPLL_INVALID will cause SetPixelClock to skip
1816 		 * PPLL/DCPLL programming and only program the DP DTO for the
1817 		 * crtc virtual pixel clock.
1818 		 */
1819 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1820 			if (rdev->clock.dp_extclk)
1821 				/* skip PPLL programming if using ext clock */
1822 				return ATOM_PPLL_INVALID;
1823 			else if (ASIC_IS_DCE6(rdev))
1824 				/* use PPLL0 for all DP */
1825 				return ATOM_PPLL0;
1826 			else if (ASIC_IS_DCE5(rdev))
1827 				/* use DCPLL for all DP */
1828 				return ATOM_DCPLL;
1829 			else {
1830 				/* use the same PPLL for all DP monitors */
1831 				pll = radeon_get_shared_dp_ppll(crtc);
1832 				if (pll != ATOM_PPLL_INVALID)
1833 					return pll;
1834 			}
1835 		} else {
1836 			/* use the same PPLL for all monitors with the same clock */
1837 			pll = radeon_get_shared_nondp_ppll(crtc);
1838 			if (pll != ATOM_PPLL_INVALID)
1839 				return pll;
1840 		}
1841 		/* all other cases */
1842 		pll_in_use = radeon_get_pll_use_mask(crtc);
1843 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
1844 			return ATOM_PPLL1;
1845 		if (!(pll_in_use & (1 << ATOM_PPLL2)))
1846 			return ATOM_PPLL2;
1847 		DRM_ERROR("unable to allocate a PPLL\n");
1848 		return ATOM_PPLL_INVALID;
1849 	} else {
1850 		/* on pre-R5xx asics, the crtc to pll mapping is hardcoded */
1851 		/* some atombios (observed in some DCE2/DCE3) code have a bug,
1852 		 * the matching btw pll and crtc is done through
1853 		 * PCLK_CRTC[1|2]_CNTL (0x480/0x484) but atombios code use the
1854 		 * pll (1 or 2) to select which register to write. ie if using
1855 		 * pll1 it will use PCLK_CRTC1_CNTL (0x480) and if using pll2
1856 		 * it will use PCLK_CRTC2_CNTL (0x484), it then use crtc id to
1857 		 * choose which value to write. Which is reverse order from
1858 		 * register logic. So only case that works is when pllid is
1859 		 * same as crtcid or when both pll and crtc are enabled and
1860 		 * both use same clock.
1861 		 *
1862 		 * So just return crtc id as if crtc and pll were hard linked
1863 		 * together even if they aren't
1864 		 */
1865 		return radeon_crtc->crtc_id;
1866 	}
1867 }
1868 
1869 void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev)
1870 {
1871 	/* always set DCPLL */
1872 	if (ASIC_IS_DCE6(rdev))
1873 		atombios_crtc_set_disp_eng_pll(rdev, rdev->clock.default_dispclk);
1874 	else if (ASIC_IS_DCE4(rdev)) {
1875 		struct radeon_atom_ss ss;
1876 		bool ss_enabled = radeon_atombios_get_asic_ss_info(rdev, &ss,
1877 								   ASIC_INTERNAL_SS_ON_DCPLL,
1878 								   rdev->clock.default_dispclk);
1879 		if (ss_enabled)
1880 			atombios_crtc_program_ss(rdev, ATOM_DISABLE, ATOM_DCPLL, -1, &ss);
1881 		/* XXX: DCE5, make sure voltage, dispclk is high enough */
1882 		atombios_crtc_set_disp_eng_pll(rdev, rdev->clock.default_dispclk);
1883 		if (ss_enabled)
1884 			atombios_crtc_program_ss(rdev, ATOM_ENABLE, ATOM_DCPLL, -1, &ss);
1885 	}
1886 
1887 }
1888 
1889 int atombios_crtc_mode_set(struct drm_crtc *crtc,
1890 			   struct drm_display_mode *mode,
1891 			   struct drm_display_mode *adjusted_mode,
1892 			   int x, int y, struct drm_framebuffer *old_fb)
1893 {
1894 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1895 	struct drm_device *dev = crtc->dev;
1896 	struct radeon_device *rdev = dev->dev_private;
1897 	struct radeon_encoder *radeon_encoder =
1898 		to_radeon_encoder(radeon_crtc->encoder);
1899 	bool is_tvcv = false;
1900 
1901 	if (radeon_encoder->active_device &
1902 	    (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT))
1903 		is_tvcv = true;
1904 
1905 	if (!radeon_crtc->adjusted_clock)
1906 		return -EINVAL;
1907 
1908 	atombios_crtc_set_pll(crtc, adjusted_mode);
1909 
1910 	if (ASIC_IS_DCE4(rdev))
1911 		atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
1912 	else if (ASIC_IS_AVIVO(rdev)) {
1913 		if (is_tvcv)
1914 			atombios_crtc_set_timing(crtc, adjusted_mode);
1915 		else
1916 			atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
1917 	} else {
1918 		atombios_crtc_set_timing(crtc, adjusted_mode);
1919 		if (radeon_crtc->crtc_id == 0)
1920 			atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
1921 		radeon_legacy_atom_fixup(crtc);
1922 	}
1923 	atombios_crtc_set_base(crtc, x, y, old_fb);
1924 	atombios_overscan_setup(crtc, mode, adjusted_mode);
1925 	atombios_scaler_setup(crtc);
1926 	/* update the hw version fpr dpm */
1927 	radeon_crtc->hw_mode = *adjusted_mode;
1928 
1929 	return 0;
1930 }
1931 
1932 static bool atombios_crtc_mode_fixup(struct drm_crtc *crtc,
1933 				     const struct drm_display_mode *mode,
1934 				     struct drm_display_mode *adjusted_mode)
1935 {
1936 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1937 	struct drm_device *dev = crtc->dev;
1938 	struct drm_encoder *encoder;
1939 
1940 	/* assign the encoder to the radeon crtc to avoid repeated lookups later */
1941 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1942 		if (encoder->crtc == crtc) {
1943 			radeon_crtc->encoder = encoder;
1944 			radeon_crtc->connector = radeon_get_connector_for_encoder(encoder);
1945 			break;
1946 		}
1947 	}
1948 	if ((radeon_crtc->encoder == NULL) || (radeon_crtc->connector == NULL)) {
1949 		radeon_crtc->encoder = NULL;
1950 		radeon_crtc->connector = NULL;
1951 		return false;
1952 	}
1953 	if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
1954 		return false;
1955 	if (!atombios_crtc_prepare_pll(crtc, adjusted_mode))
1956 		return false;
1957 	/* pick pll */
1958 	radeon_crtc->pll_id = radeon_atom_pick_pll(crtc);
1959 	/* if we can't get a PPLL for a non-DP encoder, fail */
1960 	if ((radeon_crtc->pll_id == ATOM_PPLL_INVALID) &&
1961 	    !ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder)))
1962 		return false;
1963 
1964 	return true;
1965 }
1966 
1967 static void atombios_crtc_prepare(struct drm_crtc *crtc)
1968 {
1969 	struct drm_device *dev = crtc->dev;
1970 	struct radeon_device *rdev = dev->dev_private;
1971 
1972 	/* disable crtc pair power gating before programming */
1973 	if (ASIC_IS_DCE6(rdev))
1974 		atombios_powergate_crtc(crtc, ATOM_DISABLE);
1975 
1976 	atombios_lock_crtc(crtc, ATOM_ENABLE);
1977 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
1978 }
1979 
1980 static void atombios_crtc_commit(struct drm_crtc *crtc)
1981 {
1982 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
1983 	atombios_lock_crtc(crtc, ATOM_DISABLE);
1984 }
1985 
1986 static void atombios_crtc_disable(struct drm_crtc *crtc)
1987 {
1988 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1989 	struct drm_device *dev = crtc->dev;
1990 	struct radeon_device *rdev = dev->dev_private;
1991 	struct radeon_atom_ss ss;
1992 	int i;
1993 
1994 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
1995 	if (crtc->primary->fb) {
1996 		int r;
1997 		struct radeon_framebuffer *radeon_fb;
1998 		struct radeon_bo *rbo;
1999 
2000 		radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
2001 		rbo = gem_to_radeon_bo(radeon_fb->obj);
2002 		r = radeon_bo_reserve(rbo, false);
2003 		if (unlikely(r))
2004 			DRM_ERROR("failed to reserve rbo before unpin\n");
2005 		else {
2006 			radeon_bo_unpin(rbo);
2007 			radeon_bo_unreserve(rbo);
2008 		}
2009 	}
2010 	/* disable the GRPH */
2011 	if (ASIC_IS_DCE4(rdev))
2012 		WREG32(EVERGREEN_GRPH_ENABLE + radeon_crtc->crtc_offset, 0);
2013 	else if (ASIC_IS_AVIVO(rdev))
2014 		WREG32(AVIVO_D1GRPH_ENABLE + radeon_crtc->crtc_offset, 0);
2015 
2016 	if (ASIC_IS_DCE6(rdev))
2017 		atombios_powergate_crtc(crtc, ATOM_ENABLE);
2018 
2019 	for (i = 0; i < rdev->num_crtc; i++) {
2020 		if (rdev->mode_info.crtcs[i] &&
2021 		    rdev->mode_info.crtcs[i]->enabled &&
2022 		    i != radeon_crtc->crtc_id &&
2023 		    radeon_crtc->pll_id == rdev->mode_info.crtcs[i]->pll_id) {
2024 			/* one other crtc is using this pll don't turn
2025 			 * off the pll
2026 			 */
2027 			goto done;
2028 		}
2029 	}
2030 
2031 	switch (radeon_crtc->pll_id) {
2032 	case ATOM_PPLL1:
2033 	case ATOM_PPLL2:
2034 		/* disable the ppll */
2035 		atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
2036 					  0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
2037 		break;
2038 	case ATOM_PPLL0:
2039 		/* disable the ppll */
2040 		if ((rdev->family == CHIP_ARUBA) ||
2041 		    (rdev->family == CHIP_BONAIRE) ||
2042 		    (rdev->family == CHIP_HAWAII))
2043 			atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
2044 						  0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
2045 		break;
2046 	default:
2047 		break;
2048 	}
2049 done:
2050 	radeon_crtc->pll_id = ATOM_PPLL_INVALID;
2051 	radeon_crtc->adjusted_clock = 0;
2052 	radeon_crtc->encoder = NULL;
2053 	radeon_crtc->connector = NULL;
2054 }
2055 
2056 static const struct drm_crtc_helper_funcs atombios_helper_funcs = {
2057 	.dpms = atombios_crtc_dpms,
2058 	.mode_fixup = atombios_crtc_mode_fixup,
2059 	.mode_set = atombios_crtc_mode_set,
2060 	.mode_set_base = atombios_crtc_set_base,
2061 	.mode_set_base_atomic = atombios_crtc_set_base_atomic,
2062 	.prepare = atombios_crtc_prepare,
2063 	.commit = atombios_crtc_commit,
2064 	.load_lut = radeon_crtc_load_lut,
2065 	.disable = atombios_crtc_disable,
2066 };
2067 
2068 void radeon_atombios_init_crtc(struct drm_device *dev,
2069 			       struct radeon_crtc *radeon_crtc)
2070 {
2071 	struct radeon_device *rdev = dev->dev_private;
2072 
2073 	if (ASIC_IS_DCE4(rdev)) {
2074 		switch (radeon_crtc->crtc_id) {
2075 		case 0:
2076 		default:
2077 			radeon_crtc->crtc_offset = EVERGREEN_CRTC0_REGISTER_OFFSET;
2078 			break;
2079 		case 1:
2080 			radeon_crtc->crtc_offset = EVERGREEN_CRTC1_REGISTER_OFFSET;
2081 			break;
2082 		case 2:
2083 			radeon_crtc->crtc_offset = EVERGREEN_CRTC2_REGISTER_OFFSET;
2084 			break;
2085 		case 3:
2086 			radeon_crtc->crtc_offset = EVERGREEN_CRTC3_REGISTER_OFFSET;
2087 			break;
2088 		case 4:
2089 			radeon_crtc->crtc_offset = EVERGREEN_CRTC4_REGISTER_OFFSET;
2090 			break;
2091 		case 5:
2092 			radeon_crtc->crtc_offset = EVERGREEN_CRTC5_REGISTER_OFFSET;
2093 			break;
2094 		}
2095 	} else {
2096 		if (radeon_crtc->crtc_id == 1)
2097 			radeon_crtc->crtc_offset =
2098 				AVIVO_D2CRTC_H_TOTAL - AVIVO_D1CRTC_H_TOTAL;
2099 		else
2100 			radeon_crtc->crtc_offset = 0;
2101 	}
2102 	radeon_crtc->pll_id = ATOM_PPLL_INVALID;
2103 	radeon_crtc->adjusted_clock = 0;
2104 	radeon_crtc->encoder = NULL;
2105 	radeon_crtc->connector = NULL;
2106 	drm_crtc_helper_add(&radeon_crtc->base, &atombios_helper_funcs);
2107 }
2108