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/drm_fb_helper.h>
29 #include <drm/radeon_drm.h>
30 #include <drm/drm_fixed.h>
31 #include "radeon.h"
32 #include "atom.h"
33 #include "atom-bits.h"
34 
35 static void atombios_overscan_setup(struct drm_crtc *crtc,
36 				    struct drm_display_mode *mode,
37 				    struct drm_display_mode *adjusted_mode)
38 {
39 	struct drm_device *dev = crtc->dev;
40 	struct radeon_device *rdev = dev->dev_private;
41 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
42 	SET_CRTC_OVERSCAN_PS_ALLOCATION args;
43 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_OverScan);
44 	int a1, a2;
45 
46 	memset(&args, 0, sizeof(args));
47 
48 	args.ucCRTC = radeon_crtc->crtc_id;
49 
50 	switch (radeon_crtc->rmx_type) {
51 	case RMX_CENTER:
52 		args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
53 		args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
54 		args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
55 		args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
56 		break;
57 	case RMX_ASPECT:
58 		a1 = mode->crtc_vdisplay * adjusted_mode->crtc_hdisplay;
59 		a2 = adjusted_mode->crtc_vdisplay * mode->crtc_hdisplay;
60 
61 		if (a1 > a2) {
62 			args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
63 			args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
64 		} else if (a2 > a1) {
65 			args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
66 			args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
67 		}
68 		break;
69 	case RMX_FULL:
70 	default:
71 		args.usOverscanRight = cpu_to_le16(radeon_crtc->h_border);
72 		args.usOverscanLeft = cpu_to_le16(radeon_crtc->h_border);
73 		args.usOverscanBottom = cpu_to_le16(radeon_crtc->v_border);
74 		args.usOverscanTop = cpu_to_le16(radeon_crtc->v_border);
75 		break;
76 	}
77 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
78 }
79 
80 static void atombios_scaler_setup(struct drm_crtc *crtc)
81 {
82 	struct drm_device *dev = crtc->dev;
83 	struct radeon_device *rdev = dev->dev_private;
84 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
85 	ENABLE_SCALER_PS_ALLOCATION args;
86 	int index = GetIndexIntoMasterTable(COMMAND, EnableScaler);
87 	struct radeon_encoder *radeon_encoder =
88 		to_radeon_encoder(radeon_crtc->encoder);
89 	/* fixme - fill in enc_priv for atom dac */
90 	enum radeon_tv_std tv_std = TV_STD_NTSC;
91 	bool is_tv = false, is_cv = false;
92 
93 	if (!ASIC_IS_AVIVO(rdev) && radeon_crtc->crtc_id)
94 		return;
95 
96 	if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
97 		struct radeon_encoder_atom_dac *tv_dac = radeon_encoder->enc_priv;
98 		tv_std = tv_dac->tv_std;
99 		is_tv = true;
100 	}
101 
102 	memset(&args, 0, sizeof(args));
103 
104 	args.ucScaler = radeon_crtc->crtc_id;
105 
106 	if (is_tv) {
107 		switch (tv_std) {
108 		case TV_STD_NTSC:
109 		default:
110 			args.ucTVStandard = ATOM_TV_NTSC;
111 			break;
112 		case TV_STD_PAL:
113 			args.ucTVStandard = ATOM_TV_PAL;
114 			break;
115 		case TV_STD_PAL_M:
116 			args.ucTVStandard = ATOM_TV_PALM;
117 			break;
118 		case TV_STD_PAL_60:
119 			args.ucTVStandard = ATOM_TV_PAL60;
120 			break;
121 		case TV_STD_NTSC_J:
122 			args.ucTVStandard = ATOM_TV_NTSCJ;
123 			break;
124 		case TV_STD_SCART_PAL:
125 			args.ucTVStandard = ATOM_TV_PAL; /* ??? */
126 			break;
127 		case TV_STD_SECAM:
128 			args.ucTVStandard = ATOM_TV_SECAM;
129 			break;
130 		case TV_STD_PAL_CN:
131 			args.ucTVStandard = ATOM_TV_PALCN;
132 			break;
133 		}
134 		args.ucEnable = SCALER_ENABLE_MULTITAP_MODE;
135 	} else if (is_cv) {
136 		args.ucTVStandard = ATOM_TV_CV;
137 		args.ucEnable = SCALER_ENABLE_MULTITAP_MODE;
138 	} else {
139 		switch (radeon_crtc->rmx_type) {
140 		case RMX_FULL:
141 			args.ucEnable = ATOM_SCALER_EXPANSION;
142 			break;
143 		case RMX_CENTER:
144 			args.ucEnable = ATOM_SCALER_CENTER;
145 			break;
146 		case RMX_ASPECT:
147 			args.ucEnable = ATOM_SCALER_EXPANSION;
148 			break;
149 		default:
150 			if (ASIC_IS_AVIVO(rdev))
151 				args.ucEnable = ATOM_SCALER_DISABLE;
152 			else
153 				args.ucEnable = ATOM_SCALER_CENTER;
154 			break;
155 		}
156 	}
157 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
158 	if ((is_tv || is_cv)
159 	    && rdev->family >= CHIP_RV515 && rdev->family <= CHIP_R580) {
160 		atom_rv515_force_tv_scaler(rdev, radeon_crtc);
161 	}
162 }
163 
164 static void atombios_lock_crtc(struct drm_crtc *crtc, int lock)
165 {
166 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
167 	struct drm_device *dev = crtc->dev;
168 	struct radeon_device *rdev = dev->dev_private;
169 	int index =
170 	    GetIndexIntoMasterTable(COMMAND, UpdateCRTC_DoubleBufferRegisters);
171 	ENABLE_CRTC_PS_ALLOCATION args;
172 
173 	memset(&args, 0, sizeof(args));
174 
175 	args.ucCRTC = radeon_crtc->crtc_id;
176 	args.ucEnable = lock;
177 
178 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
179 }
180 
181 static void atombios_enable_crtc(struct drm_crtc *crtc, int state)
182 {
183 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
184 	struct drm_device *dev = crtc->dev;
185 	struct radeon_device *rdev = dev->dev_private;
186 	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTC);
187 	ENABLE_CRTC_PS_ALLOCATION args;
188 
189 	memset(&args, 0, sizeof(args));
190 
191 	args.ucCRTC = radeon_crtc->crtc_id;
192 	args.ucEnable = state;
193 
194 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
195 }
196 
197 static void atombios_enable_crtc_memreq(struct drm_crtc *crtc, int state)
198 {
199 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
200 	struct drm_device *dev = crtc->dev;
201 	struct radeon_device *rdev = dev->dev_private;
202 	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTCMemReq);
203 	ENABLE_CRTC_PS_ALLOCATION args;
204 
205 	memset(&args, 0, sizeof(args));
206 
207 	args.ucCRTC = radeon_crtc->crtc_id;
208 	args.ucEnable = state;
209 
210 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
211 }
212 
213 static const u32 vga_control_regs[6] =
214 {
215 	AVIVO_D1VGA_CONTROL,
216 	AVIVO_D2VGA_CONTROL,
217 	EVERGREEN_D3VGA_CONTROL,
218 	EVERGREEN_D4VGA_CONTROL,
219 	EVERGREEN_D5VGA_CONTROL,
220 	EVERGREEN_D6VGA_CONTROL,
221 };
222 
223 static void atombios_blank_crtc(struct drm_crtc *crtc, int state)
224 {
225 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
226 	struct drm_device *dev = crtc->dev;
227 	struct radeon_device *rdev = dev->dev_private;
228 	int index = GetIndexIntoMasterTable(COMMAND, BlankCRTC);
229 	BLANK_CRTC_PS_ALLOCATION args;
230 	u32 vga_control = 0;
231 
232 	memset(&args, 0, sizeof(args));
233 
234 	if (ASIC_IS_DCE8(rdev)) {
235 		vga_control = RREG32(vga_control_regs[radeon_crtc->crtc_id]);
236 		WREG32(vga_control_regs[radeon_crtc->crtc_id], vga_control | 1);
237 	}
238 
239 	args.ucCRTC = radeon_crtc->crtc_id;
240 	args.ucBlanking = state;
241 
242 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
243 
244 	if (ASIC_IS_DCE8(rdev)) {
245 		WREG32(vga_control_regs[radeon_crtc->crtc_id], vga_control);
246 	}
247 }
248 
249 static void atombios_powergate_crtc(struct drm_crtc *crtc, int state)
250 {
251 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
252 	struct drm_device *dev = crtc->dev;
253 	struct radeon_device *rdev = dev->dev_private;
254 	int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
255 	ENABLE_DISP_POWER_GATING_PARAMETERS_V2_1 args;
256 
257 	memset(&args, 0, sizeof(args));
258 
259 	args.ucDispPipeId = radeon_crtc->crtc_id;
260 	args.ucEnable = state;
261 
262 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
263 }
264 
265 void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
266 {
267 	struct drm_device *dev = crtc->dev;
268 	struct radeon_device *rdev = dev->dev_private;
269 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
270 
271 	switch (mode) {
272 	case DRM_MODE_DPMS_ON:
273 		radeon_crtc->enabled = true;
274 		atombios_enable_crtc(crtc, ATOM_ENABLE);
275 		if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
276 			atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
277 		atombios_blank_crtc(crtc, ATOM_DISABLE);
278 		if (dev->num_crtcs > radeon_crtc->crtc_id)
279 			drm_crtc_vblank_on(crtc);
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 		if (dev->num_crtcs > radeon_crtc->crtc_id)
286 			drm_crtc_vblank_off(crtc);
287 		if (radeon_crtc->enabled)
288 			atombios_blank_crtc(crtc, ATOM_ENABLE);
289 		if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
290 			atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
291 		atombios_enable_crtc(crtc, ATOM_DISABLE);
292 		radeon_crtc->enabled = false;
293 		break;
294 	}
295 	/* adjust pm to dpms */
296 	radeon_pm_compute_clocks(rdev);
297 }
298 
299 static void
300 atombios_set_crtc_dtd_timing(struct drm_crtc *crtc,
301 			     struct drm_display_mode *mode)
302 {
303 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
304 	struct drm_device *dev = crtc->dev;
305 	struct radeon_device *rdev = dev->dev_private;
306 	SET_CRTC_USING_DTD_TIMING_PARAMETERS args;
307 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_UsingDTDTiming);
308 	u16 misc = 0;
309 
310 	memset(&args, 0, sizeof(args));
311 	args.usH_Size = cpu_to_le16(mode->crtc_hdisplay - (radeon_crtc->h_border * 2));
312 	args.usH_Blanking_Time =
313 		cpu_to_le16(mode->crtc_hblank_end - mode->crtc_hdisplay + (radeon_crtc->h_border * 2));
314 	args.usV_Size = cpu_to_le16(mode->crtc_vdisplay - (radeon_crtc->v_border * 2));
315 	args.usV_Blanking_Time =
316 		cpu_to_le16(mode->crtc_vblank_end - mode->crtc_vdisplay + (radeon_crtc->v_border * 2));
317 	args.usH_SyncOffset =
318 		cpu_to_le16(mode->crtc_hsync_start - mode->crtc_hdisplay + radeon_crtc->h_border);
319 	args.usH_SyncWidth =
320 		cpu_to_le16(mode->crtc_hsync_end - mode->crtc_hsync_start);
321 	args.usV_SyncOffset =
322 		cpu_to_le16(mode->crtc_vsync_start - mode->crtc_vdisplay + radeon_crtc->v_border);
323 	args.usV_SyncWidth =
324 		cpu_to_le16(mode->crtc_vsync_end - mode->crtc_vsync_start);
325 	args.ucH_Border = radeon_crtc->h_border;
326 	args.ucV_Border = radeon_crtc->v_border;
327 
328 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
329 		misc |= ATOM_VSYNC_POLARITY;
330 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
331 		misc |= ATOM_HSYNC_POLARITY;
332 	if (mode->flags & DRM_MODE_FLAG_CSYNC)
333 		misc |= ATOM_COMPOSITESYNC;
334 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
335 		misc |= ATOM_INTERLACE;
336 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
337 		misc |= ATOM_DOUBLE_CLOCK_MODE;
338 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
339 		misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
340 
341 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
342 	args.ucCRTC = radeon_crtc->crtc_id;
343 
344 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
345 }
346 
347 static void atombios_crtc_set_timing(struct drm_crtc *crtc,
348 				     struct drm_display_mode *mode)
349 {
350 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
351 	struct drm_device *dev = crtc->dev;
352 	struct radeon_device *rdev = dev->dev_private;
353 	SET_CRTC_TIMING_PARAMETERS_PS_ALLOCATION args;
354 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_Timing);
355 	u16 misc = 0;
356 
357 	memset(&args, 0, sizeof(args));
358 	args.usH_Total = cpu_to_le16(mode->crtc_htotal);
359 	args.usH_Disp = cpu_to_le16(mode->crtc_hdisplay);
360 	args.usH_SyncStart = cpu_to_le16(mode->crtc_hsync_start);
361 	args.usH_SyncWidth =
362 		cpu_to_le16(mode->crtc_hsync_end - mode->crtc_hsync_start);
363 	args.usV_Total = cpu_to_le16(mode->crtc_vtotal);
364 	args.usV_Disp = cpu_to_le16(mode->crtc_vdisplay);
365 	args.usV_SyncStart = cpu_to_le16(mode->crtc_vsync_start);
366 	args.usV_SyncWidth =
367 		cpu_to_le16(mode->crtc_vsync_end - mode->crtc_vsync_start);
368 
369 	args.ucOverscanRight = radeon_crtc->h_border;
370 	args.ucOverscanLeft = radeon_crtc->h_border;
371 	args.ucOverscanBottom = radeon_crtc->v_border;
372 	args.ucOverscanTop = radeon_crtc->v_border;
373 
374 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
375 		misc |= ATOM_VSYNC_POLARITY;
376 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
377 		misc |= ATOM_HSYNC_POLARITY;
378 	if (mode->flags & DRM_MODE_FLAG_CSYNC)
379 		misc |= ATOM_COMPOSITESYNC;
380 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
381 		misc |= ATOM_INTERLACE;
382 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
383 		misc |= ATOM_DOUBLE_CLOCK_MODE;
384 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
385 		misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
386 
387 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
388 	args.ucCRTC = radeon_crtc->crtc_id;
389 
390 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
391 }
392 
393 static void atombios_disable_ss(struct radeon_device *rdev, int pll_id)
394 {
395 	u32 ss_cntl;
396 
397 	if (ASIC_IS_DCE4(rdev)) {
398 		switch (pll_id) {
399 		case ATOM_PPLL1:
400 			ss_cntl = RREG32(EVERGREEN_P1PLL_SS_CNTL);
401 			ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
402 			WREG32(EVERGREEN_P1PLL_SS_CNTL, ss_cntl);
403 			break;
404 		case ATOM_PPLL2:
405 			ss_cntl = RREG32(EVERGREEN_P2PLL_SS_CNTL);
406 			ss_cntl &= ~EVERGREEN_PxPLL_SS_EN;
407 			WREG32(EVERGREEN_P2PLL_SS_CNTL, ss_cntl);
408 			break;
409 		case ATOM_DCPLL:
410 		case ATOM_PPLL_INVALID:
411 			return;
412 		}
413 	} else if (ASIC_IS_AVIVO(rdev)) {
414 		switch (pll_id) {
415 		case ATOM_PPLL1:
416 			ss_cntl = RREG32(AVIVO_P1PLL_INT_SS_CNTL);
417 			ss_cntl &= ~1;
418 			WREG32(AVIVO_P1PLL_INT_SS_CNTL, ss_cntl);
419 			break;
420 		case ATOM_PPLL2:
421 			ss_cntl = RREG32(AVIVO_P2PLL_INT_SS_CNTL);
422 			ss_cntl &= ~1;
423 			WREG32(AVIVO_P2PLL_INT_SS_CNTL, ss_cntl);
424 			break;
425 		case ATOM_DCPLL:
426 		case ATOM_PPLL_INVALID:
427 			return;
428 		}
429 	}
430 }
431 
432 
433 union atom_enable_ss {
434 	ENABLE_LVDS_SS_PARAMETERS lvds_ss;
435 	ENABLE_LVDS_SS_PARAMETERS_V2 lvds_ss_2;
436 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION v1;
437 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V2 v2;
438 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V3 v3;
439 };
440 
441 static void atombios_crtc_program_ss(struct radeon_device *rdev,
442 				     int enable,
443 				     int pll_id,
444 				     int crtc_id,
445 				     struct radeon_atom_ss *ss)
446 {
447 	unsigned i;
448 	int index = GetIndexIntoMasterTable(COMMAND, EnableSpreadSpectrumOnPPLL);
449 	union atom_enable_ss args;
450 
451 	if (enable) {
452 		/* Don't mess with SS if percentage is 0 or external ss.
453 		 * SS is already disabled previously, and disabling it
454 		 * again can cause display problems if the pll is already
455 		 * programmed.
456 		 */
457 		if (ss->percentage == 0)
458 			return;
459 		if (ss->type & ATOM_EXTERNAL_SS_MASK)
460 			return;
461 	} else {
462 		for (i = 0; i < rdev->num_crtc; i++) {
463 			if (rdev->mode_info.crtcs[i] &&
464 			    rdev->mode_info.crtcs[i]->enabled &&
465 			    i != crtc_id &&
466 			    pll_id == rdev->mode_info.crtcs[i]->pll_id) {
467 				/* one other crtc is using this pll don't turn
468 				 * off spread spectrum as it might turn off
469 				 * display on active crtc
470 				 */
471 				return;
472 			}
473 		}
474 	}
475 
476 	memset(&args, 0, sizeof(args));
477 
478 	if (ASIC_IS_DCE5(rdev)) {
479 		args.v3.usSpreadSpectrumAmountFrac = cpu_to_le16(0);
480 		args.v3.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
481 		switch (pll_id) {
482 		case ATOM_PPLL1:
483 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P1PLL;
484 			break;
485 		case ATOM_PPLL2:
486 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P2PLL;
487 			break;
488 		case ATOM_DCPLL:
489 			args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_DCPLL;
490 			break;
491 		case ATOM_PPLL_INVALID:
492 			return;
493 		}
494 		args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
495 		args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
496 		args.v3.ucEnable = enable;
497 	} else if (ASIC_IS_DCE4(rdev)) {
498 		args.v2.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
499 		args.v2.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
500 		switch (pll_id) {
501 		case ATOM_PPLL1:
502 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P1PLL;
503 			break;
504 		case ATOM_PPLL2:
505 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P2PLL;
506 			break;
507 		case ATOM_DCPLL:
508 			args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_DCPLL;
509 			break;
510 		case ATOM_PPLL_INVALID:
511 			return;
512 		}
513 		args.v2.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
514 		args.v2.usSpreadSpectrumStep = cpu_to_le16(ss->step);
515 		args.v2.ucEnable = enable;
516 	} else if (ASIC_IS_DCE3(rdev)) {
517 		args.v1.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
518 		args.v1.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
519 		args.v1.ucSpreadSpectrumStep = ss->step;
520 		args.v1.ucSpreadSpectrumDelay = ss->delay;
521 		args.v1.ucSpreadSpectrumRange = ss->range;
522 		args.v1.ucPpll = pll_id;
523 		args.v1.ucEnable = enable;
524 	} else if (ASIC_IS_AVIVO(rdev)) {
525 		if ((enable == ATOM_DISABLE) || (ss->percentage == 0) ||
526 		    (ss->type & ATOM_EXTERNAL_SS_MASK)) {
527 			atombios_disable_ss(rdev, pll_id);
528 			return;
529 		}
530 		args.lvds_ss_2.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
531 		args.lvds_ss_2.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
532 		args.lvds_ss_2.ucSpreadSpectrumStep = ss->step;
533 		args.lvds_ss_2.ucSpreadSpectrumDelay = ss->delay;
534 		args.lvds_ss_2.ucSpreadSpectrumRange = ss->range;
535 		args.lvds_ss_2.ucEnable = enable;
536 	} else {
537 		if (enable == ATOM_DISABLE) {
538 			atombios_disable_ss(rdev, pll_id);
539 			return;
540 		}
541 		args.lvds_ss.usSpreadSpectrumPercentage = cpu_to_le16(ss->percentage);
542 		args.lvds_ss.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
543 		args.lvds_ss.ucSpreadSpectrumStepSize_Delay = (ss->step & 3) << 2;
544 		args.lvds_ss.ucSpreadSpectrumStepSize_Delay |= (ss->delay & 7) << 4;
545 		args.lvds_ss.ucEnable = enable;
546 	}
547 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
548 }
549 
550 union adjust_pixel_clock {
551 	ADJUST_DISPLAY_PLL_PS_ALLOCATION v1;
552 	ADJUST_DISPLAY_PLL_PS_ALLOCATION_V3 v3;
553 };
554 
555 static u32 atombios_adjust_pll(struct drm_crtc *crtc,
556 			       struct drm_display_mode *mode)
557 {
558 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
559 	struct drm_device *dev = crtc->dev;
560 	struct radeon_device *rdev = dev->dev_private;
561 	struct drm_encoder *encoder = radeon_crtc->encoder;
562 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
563 	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
564 	u32 adjusted_clock = mode->clock;
565 	int encoder_mode = atombios_get_encoder_mode(encoder);
566 	u32 dp_clock = mode->clock;
567 	u32 clock = mode->clock;
568 	int bpc = radeon_crtc->bpc;
569 	bool is_duallink = radeon_dig_monitor_is_duallink(encoder, mode->clock);
570 
571 	/* reset the pll flags */
572 	radeon_crtc->pll_flags = 0;
573 
574 	if (ASIC_IS_AVIVO(rdev)) {
575 		if ((rdev->family == CHIP_RS600) ||
576 		    (rdev->family == CHIP_RS690) ||
577 		    (rdev->family == CHIP_RS740))
578 			radeon_crtc->pll_flags |= (/*RADEON_PLL_USE_FRAC_FB_DIV |*/
579 				RADEON_PLL_PREFER_CLOSEST_LOWER);
580 
581 		if (ASIC_IS_DCE32(rdev) && mode->clock > 200000)	/* range limits??? */
582 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
583 		else
584 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
585 
586 		if (rdev->family < CHIP_RV770)
587 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
588 		/* use frac fb div on APUs */
589 		if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
590 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
591 		/* use frac fb div on RS780/RS880 */
592 		if (((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
593 		    && !radeon_crtc->ss_enabled)
594 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
595 		if (ASIC_IS_DCE32(rdev) && mode->clock > 165000)
596 			radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
597 	} else {
598 		radeon_crtc->pll_flags |= RADEON_PLL_LEGACY;
599 
600 		if (mode->clock > 200000)	/* range limits??? */
601 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
602 		else
603 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
604 	}
605 
606 	if ((radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
607 	    (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) {
608 		if (connector) {
609 			struct radeon_connector *radeon_connector = to_radeon_connector(connector);
610 			struct radeon_connector_atom_dig *dig_connector =
611 				radeon_connector->con_priv;
612 
613 			dp_clock = dig_connector->dp_clock;
614 		}
615 	}
616 
617 	if (radeon_encoder->is_mst_encoder) {
618 		struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv;
619 		struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv;
620 
621 		dp_clock = dig_connector->dp_clock;
622 	}
623 
624 	/* use recommended ref_div for ss */
625 	if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
626 		if (radeon_crtc->ss_enabled) {
627 			if (radeon_crtc->ss.refdiv) {
628 				radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
629 				radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv;
630 				if (ASIC_IS_AVIVO(rdev) &&
631 				    rdev->family != CHIP_RS780 &&
632 				    rdev->family != CHIP_RS880)
633 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
634 			}
635 		}
636 	}
637 
638 	if (ASIC_IS_AVIVO(rdev)) {
639 		/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */
640 		if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)
641 			adjusted_clock = mode->clock * 2;
642 		if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
643 			radeon_crtc->pll_flags |= RADEON_PLL_PREFER_CLOSEST_LOWER;
644 		if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
645 			radeon_crtc->pll_flags |= RADEON_PLL_IS_LCD;
646 	} else {
647 		if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
648 			radeon_crtc->pll_flags |= RADEON_PLL_NO_ODD_POST_DIV;
649 		if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS)
650 			radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
651 	}
652 
653 	/* adjust pll for deep color modes */
654 	if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
655 		switch (bpc) {
656 		case 8:
657 		default:
658 			break;
659 		case 10:
660 			clock = (clock * 5) / 4;
661 			break;
662 		case 12:
663 			clock = (clock * 3) / 2;
664 			break;
665 		case 16:
666 			clock = clock * 2;
667 			break;
668 		}
669 	}
670 
671 	/* DCE3+ has an AdjustDisplayPll that will adjust the pixel clock
672 	 * accordingly based on the encoder/transmitter to work around
673 	 * special hw requirements.
674 	 */
675 	if (ASIC_IS_DCE3(rdev)) {
676 		union adjust_pixel_clock args;
677 		u8 frev, crev;
678 		int index;
679 
680 		index = GetIndexIntoMasterTable(COMMAND, AdjustDisplayPll);
681 		if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
682 					   &crev))
683 			return adjusted_clock;
684 
685 		memset(&args, 0, sizeof(args));
686 
687 		switch (frev) {
688 		case 1:
689 			switch (crev) {
690 			case 1:
691 			case 2:
692 				args.v1.usPixelClock = cpu_to_le16(clock / 10);
693 				args.v1.ucTransmitterID = radeon_encoder->encoder_id;
694 				args.v1.ucEncodeMode = encoder_mode;
695 				if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage)
696 					args.v1.ucConfig |=
697 						ADJUST_DISPLAY_CONFIG_SS_ENABLE;
698 
699 				atom_execute_table(rdev->mode_info.atom_context,
700 						   index, (uint32_t *)&args);
701 				adjusted_clock = le16_to_cpu(args.v1.usPixelClock) * 10;
702 				break;
703 			case 3:
704 				args.v3.sInput.usPixelClock = cpu_to_le16(clock / 10);
705 				args.v3.sInput.ucTransmitterID = radeon_encoder->encoder_id;
706 				args.v3.sInput.ucEncodeMode = encoder_mode;
707 				args.v3.sInput.ucDispPllConfig = 0;
708 				if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage)
709 					args.v3.sInput.ucDispPllConfig |=
710 						DISPPLL_CONFIG_SS_ENABLE;
711 				if (ENCODER_MODE_IS_DP(encoder_mode)) {
712 					args.v3.sInput.ucDispPllConfig |=
713 						DISPPLL_CONFIG_COHERENT_MODE;
714 					/* 16200 or 27000 */
715 					args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
716 				} else if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
717 					struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
718 					if (dig->coherent_mode)
719 						args.v3.sInput.ucDispPllConfig |=
720 							DISPPLL_CONFIG_COHERENT_MODE;
721 					if (is_duallink)
722 						args.v3.sInput.ucDispPllConfig |=
723 							DISPPLL_CONFIG_DUAL_LINK;
724 				}
725 				if (radeon_encoder_get_dp_bridge_encoder_id(encoder) !=
726 				    ENCODER_OBJECT_ID_NONE)
727 					args.v3.sInput.ucExtTransmitterID =
728 						radeon_encoder_get_dp_bridge_encoder_id(encoder);
729 				else
730 					args.v3.sInput.ucExtTransmitterID = 0;
731 
732 				atom_execute_table(rdev->mode_info.atom_context,
733 						   index, (uint32_t *)&args);
734 				adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10;
735 				if (args.v3.sOutput.ucRefDiv) {
736 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
737 					radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV;
738 					radeon_crtc->pll_reference_div = args.v3.sOutput.ucRefDiv;
739 				}
740 				if (args.v3.sOutput.ucPostDiv) {
741 					radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
742 					radeon_crtc->pll_flags |= RADEON_PLL_USE_POST_DIV;
743 					radeon_crtc->pll_post_div = args.v3.sOutput.ucPostDiv;
744 				}
745 				break;
746 			default:
747 				DRM_ERROR("Unknown table version %d %d\n", frev, crev);
748 				return adjusted_clock;
749 			}
750 			break;
751 		default:
752 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
753 			return adjusted_clock;
754 		}
755 	}
756 	return adjusted_clock;
757 }
758 
759 union set_pixel_clock {
760 	SET_PIXEL_CLOCK_PS_ALLOCATION base;
761 	PIXEL_CLOCK_PARAMETERS v1;
762 	PIXEL_CLOCK_PARAMETERS_V2 v2;
763 	PIXEL_CLOCK_PARAMETERS_V3 v3;
764 	PIXEL_CLOCK_PARAMETERS_V5 v5;
765 	PIXEL_CLOCK_PARAMETERS_V6 v6;
766 };
767 
768 /* on DCE5, make sure the voltage is high enough to support the
769  * required disp clk.
770  */
771 static void atombios_crtc_set_disp_eng_pll(struct radeon_device *rdev,
772 				    u32 dispclk)
773 {
774 	u8 frev, crev;
775 	int index;
776 	union set_pixel_clock args;
777 
778 	memset(&args, 0, sizeof(args));
779 
780 	index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
781 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
782 				   &crev))
783 		return;
784 
785 	switch (frev) {
786 	case 1:
787 		switch (crev) {
788 		case 5:
789 			/* if the default dcpll clock is specified,
790 			 * SetPixelClock provides the dividers
791 			 */
792 			args.v5.ucCRTC = ATOM_CRTC_INVALID;
793 			args.v5.usPixelClock = cpu_to_le16(dispclk);
794 			args.v5.ucPpll = ATOM_DCPLL;
795 			break;
796 		case 6:
797 			/* if the default dcpll clock is specified,
798 			 * SetPixelClock provides the dividers
799 			 */
800 			args.v6.ulDispEngClkFreq = cpu_to_le32(dispclk);
801 			if (ASIC_IS_DCE61(rdev) || ASIC_IS_DCE8(rdev))
802 				args.v6.ucPpll = ATOM_EXT_PLL1;
803 			else if (ASIC_IS_DCE6(rdev))
804 				args.v6.ucPpll = ATOM_PPLL0;
805 			else
806 				args.v6.ucPpll = ATOM_DCPLL;
807 			break;
808 		default:
809 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
810 			return;
811 		}
812 		break;
813 	default:
814 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
815 		return;
816 	}
817 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
818 }
819 
820 static void atombios_crtc_program_pll(struct drm_crtc *crtc,
821 				      u32 crtc_id,
822 				      int pll_id,
823 				      u32 encoder_mode,
824 				      u32 encoder_id,
825 				      u32 clock,
826 				      u32 ref_div,
827 				      u32 fb_div,
828 				      u32 frac_fb_div,
829 				      u32 post_div,
830 				      int bpc,
831 				      bool ss_enabled,
832 				      struct radeon_atom_ss *ss)
833 {
834 	struct drm_device *dev = crtc->dev;
835 	struct radeon_device *rdev = dev->dev_private;
836 	u8 frev, crev;
837 	int index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
838 	union set_pixel_clock args;
839 
840 	memset(&args, 0, sizeof(args));
841 
842 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev,
843 				   &crev))
844 		return;
845 
846 	switch (frev) {
847 	case 1:
848 		switch (crev) {
849 		case 1:
850 			if (clock == ATOM_DISABLE)
851 				return;
852 			args.v1.usPixelClock = cpu_to_le16(clock / 10);
853 			args.v1.usRefDiv = cpu_to_le16(ref_div);
854 			args.v1.usFbDiv = cpu_to_le16(fb_div);
855 			args.v1.ucFracFbDiv = frac_fb_div;
856 			args.v1.ucPostDiv = post_div;
857 			args.v1.ucPpll = pll_id;
858 			args.v1.ucCRTC = crtc_id;
859 			args.v1.ucRefDivSrc = 1;
860 			break;
861 		case 2:
862 			args.v2.usPixelClock = cpu_to_le16(clock / 10);
863 			args.v2.usRefDiv = cpu_to_le16(ref_div);
864 			args.v2.usFbDiv = cpu_to_le16(fb_div);
865 			args.v2.ucFracFbDiv = frac_fb_div;
866 			args.v2.ucPostDiv = post_div;
867 			args.v2.ucPpll = pll_id;
868 			args.v2.ucCRTC = crtc_id;
869 			args.v2.ucRefDivSrc = 1;
870 			break;
871 		case 3:
872 			args.v3.usPixelClock = cpu_to_le16(clock / 10);
873 			args.v3.usRefDiv = cpu_to_le16(ref_div);
874 			args.v3.usFbDiv = cpu_to_le16(fb_div);
875 			args.v3.ucFracFbDiv = frac_fb_div;
876 			args.v3.ucPostDiv = post_div;
877 			args.v3.ucPpll = pll_id;
878 			if (crtc_id == ATOM_CRTC2)
879 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC2;
880 			else
881 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC1;
882 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
883 				args.v3.ucMiscInfo |= PIXEL_CLOCK_MISC_REF_DIV_SRC;
884 			args.v3.ucTransmitterId = encoder_id;
885 			args.v3.ucEncoderMode = encoder_mode;
886 			break;
887 		case 5:
888 			args.v5.ucCRTC = crtc_id;
889 			args.v5.usPixelClock = cpu_to_le16(clock / 10);
890 			args.v5.ucRefDiv = ref_div;
891 			args.v5.usFbDiv = cpu_to_le16(fb_div);
892 			args.v5.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
893 			args.v5.ucPostDiv = post_div;
894 			args.v5.ucMiscInfo = 0; /* HDMI depth, etc. */
895 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
896 				args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_REF_DIV_SRC;
897 			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
898 				switch (bpc) {
899 				case 8:
900 				default:
901 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_24BPP;
902 					break;
903 				case 10:
904 					/* yes this is correct, the atom define is wrong */
905 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_32BPP;
906 					break;
907 				case 12:
908 					/* yes this is correct, the atom define is wrong */
909 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_30BPP;
910 					break;
911 				}
912 			}
913 			args.v5.ucTransmitterID = encoder_id;
914 			args.v5.ucEncoderMode = encoder_mode;
915 			args.v5.ucPpll = pll_id;
916 			break;
917 		case 6:
918 			args.v6.ulDispEngClkFreq = cpu_to_le32(crtc_id << 24 | clock / 10);
919 			args.v6.ucRefDiv = ref_div;
920 			args.v6.usFbDiv = cpu_to_le16(fb_div);
921 			args.v6.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
922 			args.v6.ucPostDiv = post_div;
923 			args.v6.ucMiscInfo = 0; /* HDMI depth, etc. */
924 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
925 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_REF_DIV_SRC;
926 			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
927 				switch (bpc) {
928 				case 8:
929 				default:
930 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_24BPP;
931 					break;
932 				case 10:
933 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_30BPP_V6;
934 					break;
935 				case 12:
936 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_36BPP_V6;
937 					break;
938 				case 16:
939 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_48BPP;
940 					break;
941 				}
942 			}
943 			args.v6.ucTransmitterID = encoder_id;
944 			args.v6.ucEncoderMode = encoder_mode;
945 			args.v6.ucPpll = pll_id;
946 			break;
947 		default:
948 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
949 			return;
950 		}
951 		break;
952 	default:
953 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
954 		return;
955 	}
956 
957 	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
958 }
959 
960 static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
961 {
962 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
963 	struct drm_device *dev = crtc->dev;
964 	struct radeon_device *rdev = dev->dev_private;
965 	struct radeon_encoder *radeon_encoder =
966 		to_radeon_encoder(radeon_crtc->encoder);
967 	int encoder_mode = atombios_get_encoder_mode(radeon_crtc->encoder);
968 
969 	radeon_crtc->bpc = 8;
970 	radeon_crtc->ss_enabled = false;
971 
972 	if (radeon_encoder->is_mst_encoder) {
973 		radeon_dp_mst_prepare_pll(crtc, mode);
974 	} else if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
975 	    (radeon_encoder_get_dp_bridge_encoder_id(radeon_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) {
976 		struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
977 		struct drm_connector *connector =
978 			radeon_get_connector_for_encoder(radeon_crtc->encoder);
979 		struct radeon_connector *radeon_connector =
980 			to_radeon_connector(connector);
981 		struct radeon_connector_atom_dig *dig_connector =
982 			radeon_connector->con_priv;
983 		int dp_clock;
984 
985 		/* Assign mode clock for hdmi deep color max clock limit check */
986 		radeon_connector->pixelclock_for_modeset = mode->clock;
987 		radeon_crtc->bpc = radeon_get_monitor_bpc(connector);
988 
989 		switch (encoder_mode) {
990 		case ATOM_ENCODER_MODE_DP_MST:
991 		case ATOM_ENCODER_MODE_DP:
992 			/* DP/eDP */
993 			dp_clock = dig_connector->dp_clock / 10;
994 			if (ASIC_IS_DCE4(rdev))
995 				radeon_crtc->ss_enabled =
996 					radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss,
997 									 ASIC_INTERNAL_SS_ON_DP,
998 									 dp_clock);
999 			else {
1000 				if (dp_clock == 16200) {
1001 					radeon_crtc->ss_enabled =
1002 						radeon_atombios_get_ppll_ss_info(rdev,
1003 										 &radeon_crtc->ss,
1004 										 ATOM_DP_SS_ID2);
1005 					if (!radeon_crtc->ss_enabled)
1006 						radeon_crtc->ss_enabled =
1007 							radeon_atombios_get_ppll_ss_info(rdev,
1008 											 &radeon_crtc->ss,
1009 											 ATOM_DP_SS_ID1);
1010 				} else {
1011 					radeon_crtc->ss_enabled =
1012 						radeon_atombios_get_ppll_ss_info(rdev,
1013 										 &radeon_crtc->ss,
1014 										 ATOM_DP_SS_ID1);
1015 				}
1016 				/* disable spread spectrum on DCE3 DP */
1017 				radeon_crtc->ss_enabled = false;
1018 			}
1019 			break;
1020 		case ATOM_ENCODER_MODE_LVDS:
1021 			if (ASIC_IS_DCE4(rdev))
1022 				radeon_crtc->ss_enabled =
1023 					radeon_atombios_get_asic_ss_info(rdev,
1024 									 &radeon_crtc->ss,
1025 									 dig->lcd_ss_id,
1026 									 mode->clock / 10);
1027 			else
1028 				radeon_crtc->ss_enabled =
1029 					radeon_atombios_get_ppll_ss_info(rdev,
1030 									 &radeon_crtc->ss,
1031 									 dig->lcd_ss_id);
1032 			break;
1033 		case ATOM_ENCODER_MODE_DVI:
1034 			if (ASIC_IS_DCE4(rdev))
1035 				radeon_crtc->ss_enabled =
1036 					radeon_atombios_get_asic_ss_info(rdev,
1037 									 &radeon_crtc->ss,
1038 									 ASIC_INTERNAL_SS_ON_TMDS,
1039 									 mode->clock / 10);
1040 			break;
1041 		case ATOM_ENCODER_MODE_HDMI:
1042 			if (ASIC_IS_DCE4(rdev))
1043 				radeon_crtc->ss_enabled =
1044 					radeon_atombios_get_asic_ss_info(rdev,
1045 									 &radeon_crtc->ss,
1046 									 ASIC_INTERNAL_SS_ON_HDMI,
1047 									 mode->clock / 10);
1048 			break;
1049 		default:
1050 			break;
1051 		}
1052 	}
1053 
1054 	/* adjust pixel clock as needed */
1055 	radeon_crtc->adjusted_clock = atombios_adjust_pll(crtc, mode);
1056 
1057 	return true;
1058 }
1059 
1060 static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
1061 {
1062 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1063 	struct drm_device *dev = crtc->dev;
1064 	struct radeon_device *rdev = dev->dev_private;
1065 	struct radeon_encoder *radeon_encoder =
1066 		to_radeon_encoder(radeon_crtc->encoder);
1067 	u32 pll_clock = mode->clock;
1068 	u32 clock = mode->clock;
1069 	u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0;
1070 	struct radeon_pll *pll;
1071 	int encoder_mode = atombios_get_encoder_mode(radeon_crtc->encoder);
1072 
1073 	/* pass the actual clock to atombios_crtc_program_pll for DCE5,6 for HDMI */
1074 	if (ASIC_IS_DCE5(rdev) &&
1075 	    (encoder_mode == ATOM_ENCODER_MODE_HDMI) &&
1076 	    (radeon_crtc->bpc > 8))
1077 		clock = radeon_crtc->adjusted_clock;
1078 
1079 	switch (radeon_crtc->pll_id) {
1080 	case ATOM_PPLL1:
1081 		pll = &rdev->clock.p1pll;
1082 		break;
1083 	case ATOM_PPLL2:
1084 		pll = &rdev->clock.p2pll;
1085 		break;
1086 	case ATOM_DCPLL:
1087 	case ATOM_PPLL_INVALID:
1088 	default:
1089 		pll = &rdev->clock.dcpll;
1090 		break;
1091 	}
1092 
1093 	/* update pll params */
1094 	pll->flags = radeon_crtc->pll_flags;
1095 	pll->reference_div = radeon_crtc->pll_reference_div;
1096 	pll->post_div = radeon_crtc->pll_post_div;
1097 
1098 	if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
1099 		/* TV seems to prefer the legacy algo on some boards */
1100 		radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock,
1101 					  &fb_div, &frac_fb_div, &ref_div, &post_div);
1102 	else if (ASIC_IS_AVIVO(rdev))
1103 		radeon_compute_pll_avivo(pll, radeon_crtc->adjusted_clock, &pll_clock,
1104 					 &fb_div, &frac_fb_div, &ref_div, &post_div);
1105 	else
1106 		radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock,
1107 					  &fb_div, &frac_fb_div, &ref_div, &post_div);
1108 
1109 	atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id,
1110 				 radeon_crtc->crtc_id, &radeon_crtc->ss);
1111 
1112 	atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
1113 				  encoder_mode, radeon_encoder->encoder_id, clock,
1114 				  ref_div, fb_div, frac_fb_div, post_div,
1115 				  radeon_crtc->bpc, radeon_crtc->ss_enabled, &radeon_crtc->ss);
1116 
1117 	if (radeon_crtc->ss_enabled) {
1118 		/* calculate ss amount and step size */
1119 		if (ASIC_IS_DCE4(rdev)) {
1120 			u32 step_size;
1121 			u32 amount = (((fb_div * 10) + frac_fb_div) *
1122 				      (u32)radeon_crtc->ss.percentage) /
1123 				(100 * (u32)radeon_crtc->ss.percentage_divider);
1124 			radeon_crtc->ss.amount = (amount / 10) & ATOM_PPLL_SS_AMOUNT_V2_FBDIV_MASK;
1125 			radeon_crtc->ss.amount |= ((amount - (amount / 10)) << ATOM_PPLL_SS_AMOUNT_V2_NFRAC_SHIFT) &
1126 				ATOM_PPLL_SS_AMOUNT_V2_NFRAC_MASK;
1127 			if (radeon_crtc->ss.type & ATOM_PPLL_SS_TYPE_V2_CENTRE_SPREAD)
1128 				step_size = (4 * amount * ref_div * ((u32)radeon_crtc->ss.rate * 2048)) /
1129 					(125 * 25 * pll->reference_freq / 100);
1130 			else
1131 				step_size = (2 * amount * ref_div * ((u32)radeon_crtc->ss.rate * 2048)) /
1132 					(125 * 25 * pll->reference_freq / 100);
1133 			radeon_crtc->ss.step = step_size;
1134 		}
1135 
1136 		atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id,
1137 					 radeon_crtc->crtc_id, &radeon_crtc->ss);
1138 	}
1139 }
1140 
1141 static int dce4_crtc_do_set_base(struct drm_crtc *crtc,
1142 				 struct drm_framebuffer *fb,
1143 				 int x, int y, int atomic)
1144 {
1145 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1146 	struct drm_device *dev = crtc->dev;
1147 	struct radeon_device *rdev = dev->dev_private;
1148 	struct drm_framebuffer *target_fb;
1149 	struct drm_gem_object *obj;
1150 	struct radeon_bo *rbo;
1151 	uint64_t fb_location;
1152 	uint32_t fb_format, fb_pitch_pixels, tiling_flags;
1153 	unsigned bankw, bankh, mtaspect, tile_split;
1154 	u32 fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_NONE);
1155 	u32 tmp, viewport_w, viewport_h;
1156 	int r;
1157 	bool bypass_lut = false;
1158 	struct drm_format_name_buf format_name;
1159 
1160 	/* no fb bound */
1161 	if (!atomic && !crtc->primary->fb) {
1162 		DRM_DEBUG_KMS("No FB bound\n");
1163 		return 0;
1164 	}
1165 
1166 	if (atomic)
1167 		target_fb = fb;
1168 	else
1169 		target_fb = crtc->primary->fb;
1170 
1171 	/* If atomic, assume fb object is pinned & idle & fenced and
1172 	 * just update base pointers
1173 	 */
1174 	obj = target_fb->obj[0];
1175 	rbo = gem_to_radeon_bo(obj);
1176 	r = radeon_bo_reserve(rbo, false);
1177 	if (unlikely(r != 0))
1178 		return r;
1179 
1180 	if (atomic)
1181 		fb_location = radeon_bo_gpu_offset(rbo);
1182 	else {
1183 		r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &fb_location);
1184 		if (unlikely(r != 0)) {
1185 			radeon_bo_unreserve(rbo);
1186 			return -EINVAL;
1187 		}
1188 	}
1189 
1190 	radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
1191 	radeon_bo_unreserve(rbo);
1192 
1193 	switch (target_fb->format->format) {
1194 	case DRM_FORMAT_C8:
1195 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_8BPP) |
1196 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_INDEXED));
1197 		break;
1198 	case DRM_FORMAT_XRGB4444:
1199 	case DRM_FORMAT_ARGB4444:
1200 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1201 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB4444));
1202 #ifdef __BIG_ENDIAN
1203 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN16);
1204 #endif
1205 		break;
1206 	case DRM_FORMAT_XRGB1555:
1207 	case DRM_FORMAT_ARGB1555:
1208 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1209 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB1555));
1210 #ifdef __BIG_ENDIAN
1211 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN16);
1212 #endif
1213 		break;
1214 	case DRM_FORMAT_BGRX5551:
1215 	case DRM_FORMAT_BGRA5551:
1216 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1217 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_BGRA5551));
1218 #ifdef __BIG_ENDIAN
1219 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN16);
1220 #endif
1221 		break;
1222 	case DRM_FORMAT_RGB565:
1223 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_16BPP) |
1224 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB565));
1225 #ifdef __BIG_ENDIAN
1226 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN16);
1227 #endif
1228 		break;
1229 	case DRM_FORMAT_XRGB8888:
1230 	case DRM_FORMAT_ARGB8888:
1231 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_32BPP) |
1232 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB8888));
1233 #ifdef __BIG_ENDIAN
1234 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN32);
1235 #endif
1236 		break;
1237 	case DRM_FORMAT_XRGB2101010:
1238 	case DRM_FORMAT_ARGB2101010:
1239 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_32BPP) |
1240 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB2101010));
1241 #ifdef __BIG_ENDIAN
1242 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN32);
1243 #endif
1244 		/* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
1245 		bypass_lut = true;
1246 		break;
1247 	case DRM_FORMAT_BGRX1010102:
1248 	case DRM_FORMAT_BGRA1010102:
1249 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_32BPP) |
1250 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_BGRA1010102));
1251 #ifdef __BIG_ENDIAN
1252 		fb_swap = EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN32);
1253 #endif
1254 		/* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
1255 		bypass_lut = true;
1256 		break;
1257 	case DRM_FORMAT_XBGR8888:
1258 	case DRM_FORMAT_ABGR8888:
1259 		fb_format = (EVERGREEN_GRPH_DEPTH(EVERGREEN_GRPH_DEPTH_32BPP) |
1260 			     EVERGREEN_GRPH_FORMAT(EVERGREEN_GRPH_FORMAT_ARGB8888));
1261 		fb_swap = (EVERGREEN_GRPH_RED_CROSSBAR(EVERGREEN_GRPH_RED_SEL_B) |
1262 			   EVERGREEN_GRPH_BLUE_CROSSBAR(EVERGREEN_GRPH_BLUE_SEL_R));
1263 #ifdef __BIG_ENDIAN
1264 		fb_swap |= EVERGREEN_GRPH_ENDIAN_SWAP(EVERGREEN_GRPH_ENDIAN_8IN32);
1265 #endif
1266 		break;
1267 	default:
1268 		DRM_ERROR("Unsupported screen format %s\n",
1269 		          drm_get_format_name(target_fb->format->format, &format_name));
1270 		return -EINVAL;
1271 	}
1272 
1273 	if (tiling_flags & RADEON_TILING_MACRO) {
1274 		evergreen_tiling_fields(tiling_flags, &bankw, &bankh, &mtaspect, &tile_split);
1275 
1276 		/* Set NUM_BANKS. */
1277 		if (rdev->family >= CHIP_TAHITI) {
1278 			unsigned index, num_banks;
1279 
1280 			if (rdev->family >= CHIP_BONAIRE) {
1281 				unsigned tileb, tile_split_bytes;
1282 
1283 				/* Calculate the macrotile mode index. */
1284 				tile_split_bytes = 64 << tile_split;
1285 				tileb = 8 * 8 * target_fb->format->cpp[0];
1286 				tileb = min(tile_split_bytes, tileb);
1287 
1288 				for (index = 0; tileb > 64; index++)
1289 					tileb >>= 1;
1290 
1291 				if (index >= 16) {
1292 					DRM_ERROR("Wrong screen bpp (%u) or tile split (%u)\n",
1293 						  target_fb->format->cpp[0] * 8,
1294 						  tile_split);
1295 					return -EINVAL;
1296 				}
1297 
1298 				num_banks = (rdev->config.cik.macrotile_mode_array[index] >> 6) & 0x3;
1299 			} else {
1300 				switch (target_fb->format->cpp[0] * 8) {
1301 				case 8:
1302 					index = 10;
1303 					break;
1304 				case 16:
1305 					index = SI_TILE_MODE_COLOR_2D_SCANOUT_16BPP;
1306 					break;
1307 				default:
1308 				case 32:
1309 					index = SI_TILE_MODE_COLOR_2D_SCANOUT_32BPP;
1310 					break;
1311 				}
1312 
1313 				num_banks = (rdev->config.si.tile_mode_array[index] >> 20) & 0x3;
1314 			}
1315 
1316 			fb_format |= EVERGREEN_GRPH_NUM_BANKS(num_banks);
1317 		} else {
1318 			/* NI and older. */
1319 			if (rdev->family >= CHIP_CAYMAN)
1320 				tmp = rdev->config.cayman.tile_config;
1321 			else
1322 				tmp = rdev->config.evergreen.tile_config;
1323 
1324 			switch ((tmp & 0xf0) >> 4) {
1325 			case 0: /* 4 banks */
1326 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_4_BANK);
1327 				break;
1328 			case 1: /* 8 banks */
1329 			default:
1330 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_8_BANK);
1331 				break;
1332 			case 2: /* 16 banks */
1333 				fb_format |= EVERGREEN_GRPH_NUM_BANKS(EVERGREEN_ADDR_SURF_16_BANK);
1334 				break;
1335 			}
1336 		}
1337 
1338 		fb_format |= EVERGREEN_GRPH_ARRAY_MODE(EVERGREEN_GRPH_ARRAY_2D_TILED_THIN1);
1339 		fb_format |= EVERGREEN_GRPH_TILE_SPLIT(tile_split);
1340 		fb_format |= EVERGREEN_GRPH_BANK_WIDTH(bankw);
1341 		fb_format |= EVERGREEN_GRPH_BANK_HEIGHT(bankh);
1342 		fb_format |= EVERGREEN_GRPH_MACRO_TILE_ASPECT(mtaspect);
1343 		if (rdev->family >= CHIP_BONAIRE) {
1344 			/* XXX need to know more about the surface tiling mode */
1345 			fb_format |= CIK_GRPH_MICRO_TILE_MODE(CIK_DISPLAY_MICRO_TILING);
1346 		}
1347 	} else if (tiling_flags & RADEON_TILING_MICRO)
1348 		fb_format |= EVERGREEN_GRPH_ARRAY_MODE(EVERGREEN_GRPH_ARRAY_1D_TILED_THIN1);
1349 
1350 	if (rdev->family >= CHIP_BONAIRE) {
1351 		/* Read the pipe config from the 2D TILED SCANOUT mode.
1352 		 * It should be the same for the other modes too, but not all
1353 		 * modes set the pipe config field. */
1354 		u32 pipe_config = (rdev->config.cik.tile_mode_array[10] >> 6) & 0x1f;
1355 
1356 		fb_format |= CIK_GRPH_PIPE_CONFIG(pipe_config);
1357 	} else if ((rdev->family == CHIP_TAHITI) ||
1358 		   (rdev->family == CHIP_PITCAIRN))
1359 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P8_32x32_8x16);
1360 	else if ((rdev->family == CHIP_VERDE) ||
1361 		 (rdev->family == CHIP_OLAND) ||
1362 		 (rdev->family == CHIP_HAINAN)) /* for completeness.  HAINAN has no display hw */
1363 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P4_8x16);
1364 
1365 	switch (radeon_crtc->crtc_id) {
1366 	case 0:
1367 		WREG32(AVIVO_D1VGA_CONTROL, 0);
1368 		break;
1369 	case 1:
1370 		WREG32(AVIVO_D2VGA_CONTROL, 0);
1371 		break;
1372 	case 2:
1373 		WREG32(EVERGREEN_D3VGA_CONTROL, 0);
1374 		break;
1375 	case 3:
1376 		WREG32(EVERGREEN_D4VGA_CONTROL, 0);
1377 		break;
1378 	case 4:
1379 		WREG32(EVERGREEN_D5VGA_CONTROL, 0);
1380 		break;
1381 	case 5:
1382 		WREG32(EVERGREEN_D6VGA_CONTROL, 0);
1383 		break;
1384 	default:
1385 		break;
1386 	}
1387 
1388 	/* Make sure surface address is updated at vertical blank rather than
1389 	 * horizontal blank
1390 	 */
1391 	WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, 0);
1392 
1393 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
1394 	       upper_32_bits(fb_location));
1395 	WREG32(EVERGREEN_GRPH_SECONDARY_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
1396 	       upper_32_bits(fb_location));
1397 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1398 	       (u32)fb_location & EVERGREEN_GRPH_SURFACE_ADDRESS_MASK);
1399 	WREG32(EVERGREEN_GRPH_SECONDARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1400 	       (u32) fb_location & EVERGREEN_GRPH_SURFACE_ADDRESS_MASK);
1401 	WREG32(EVERGREEN_GRPH_CONTROL + radeon_crtc->crtc_offset, fb_format);
1402 	WREG32(EVERGREEN_GRPH_SWAP_CONTROL + radeon_crtc->crtc_offset, fb_swap);
1403 
1404 	/*
1405 	 * The LUT only has 256 slots for indexing by a 8 bpc fb. Bypass the LUT
1406 	 * for > 8 bpc scanout to avoid truncation of fb indices to 8 msb's, to
1407 	 * retain the full precision throughout the pipeline.
1408 	 */
1409 	WREG32_P(EVERGREEN_GRPH_LUT_10BIT_BYPASS_CONTROL + radeon_crtc->crtc_offset,
1410 		 (bypass_lut ? EVERGREEN_LUT_10BIT_BYPASS_EN : 0),
1411 		 ~EVERGREEN_LUT_10BIT_BYPASS_EN);
1412 
1413 	if (bypass_lut)
1414 		DRM_DEBUG_KMS("Bypassing hardware LUT due to 10 bit fb scanout.\n");
1415 
1416 	WREG32(EVERGREEN_GRPH_SURFACE_OFFSET_X + radeon_crtc->crtc_offset, 0);
1417 	WREG32(EVERGREEN_GRPH_SURFACE_OFFSET_Y + radeon_crtc->crtc_offset, 0);
1418 	WREG32(EVERGREEN_GRPH_X_START + radeon_crtc->crtc_offset, 0);
1419 	WREG32(EVERGREEN_GRPH_Y_START + radeon_crtc->crtc_offset, 0);
1420 	WREG32(EVERGREEN_GRPH_X_END + radeon_crtc->crtc_offset, target_fb->width);
1421 	WREG32(EVERGREEN_GRPH_Y_END + radeon_crtc->crtc_offset, target_fb->height);
1422 
1423 	fb_pitch_pixels = target_fb->pitches[0] / target_fb->format->cpp[0];
1424 	WREG32(EVERGREEN_GRPH_PITCH + radeon_crtc->crtc_offset, fb_pitch_pixels);
1425 	WREG32(EVERGREEN_GRPH_ENABLE + radeon_crtc->crtc_offset, 1);
1426 
1427 	if (rdev->family >= CHIP_BONAIRE)
1428 		WREG32(CIK_LB_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1429 		       target_fb->height);
1430 	else
1431 		WREG32(EVERGREEN_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1432 		       target_fb->height);
1433 	x &= ~3;
1434 	y &= ~1;
1435 	WREG32(EVERGREEN_VIEWPORT_START + radeon_crtc->crtc_offset,
1436 	       (x << 16) | y);
1437 	viewport_w = crtc->mode.hdisplay;
1438 	viewport_h = (crtc->mode.vdisplay + 1) & ~1;
1439 	if ((rdev->family >= CHIP_BONAIRE) &&
1440 	    (crtc->mode.flags & DRM_MODE_FLAG_INTERLACE))
1441 		viewport_h *= 2;
1442 	WREG32(EVERGREEN_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
1443 	       (viewport_w << 16) | viewport_h);
1444 
1445 	/* set pageflip to happen anywhere in vblank interval */
1446 	WREG32(EVERGREEN_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 0);
1447 
1448 	if (!atomic && fb && fb != crtc->primary->fb) {
1449 		rbo = gem_to_radeon_bo(fb->obj[0]);
1450 		r = radeon_bo_reserve(rbo, false);
1451 		if (unlikely(r != 0))
1452 			return r;
1453 		radeon_bo_unpin(rbo);
1454 		radeon_bo_unreserve(rbo);
1455 	}
1456 
1457 	/* Bytes per pixel may have changed */
1458 	radeon_bandwidth_update(rdev);
1459 
1460 	return 0;
1461 }
1462 
1463 static int avivo_crtc_do_set_base(struct drm_crtc *crtc,
1464 				  struct drm_framebuffer *fb,
1465 				  int x, int y, int atomic)
1466 {
1467 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1468 	struct drm_device *dev = crtc->dev;
1469 	struct radeon_device *rdev = dev->dev_private;
1470 	struct drm_gem_object *obj;
1471 	struct radeon_bo *rbo;
1472 	struct drm_framebuffer *target_fb;
1473 	uint64_t fb_location;
1474 	uint32_t fb_format, fb_pitch_pixels, tiling_flags;
1475 	u32 fb_swap = R600_D1GRPH_SWAP_ENDIAN_NONE;
1476 	u32 viewport_w, viewport_h;
1477 	int r;
1478 	bool bypass_lut = false;
1479 	struct drm_format_name_buf format_name;
1480 
1481 	/* no fb bound */
1482 	if (!atomic && !crtc->primary->fb) {
1483 		DRM_DEBUG_KMS("No FB bound\n");
1484 		return 0;
1485 	}
1486 
1487 	if (atomic)
1488 		target_fb = fb;
1489 	else
1490 		target_fb = crtc->primary->fb;
1491 
1492 	obj = target_fb->obj[0];
1493 	rbo = gem_to_radeon_bo(obj);
1494 	r = radeon_bo_reserve(rbo, false);
1495 	if (unlikely(r != 0))
1496 		return r;
1497 
1498 	/* If atomic, assume fb object is pinned & idle & fenced and
1499 	 * just update base pointers
1500 	 */
1501 	if (atomic)
1502 		fb_location = radeon_bo_gpu_offset(rbo);
1503 	else {
1504 		r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &fb_location);
1505 		if (unlikely(r != 0)) {
1506 			radeon_bo_unreserve(rbo);
1507 			return -EINVAL;
1508 		}
1509 	}
1510 	radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
1511 	radeon_bo_unreserve(rbo);
1512 
1513 	switch (target_fb->format->format) {
1514 	case DRM_FORMAT_C8:
1515 		fb_format =
1516 		    AVIVO_D1GRPH_CONTROL_DEPTH_8BPP |
1517 		    AVIVO_D1GRPH_CONTROL_8BPP_INDEXED;
1518 		break;
1519 	case DRM_FORMAT_XRGB4444:
1520 	case DRM_FORMAT_ARGB4444:
1521 		fb_format =
1522 		    AVIVO_D1GRPH_CONTROL_DEPTH_16BPP |
1523 		    AVIVO_D1GRPH_CONTROL_16BPP_ARGB4444;
1524 #ifdef __BIG_ENDIAN
1525 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_16BIT;
1526 #endif
1527 		break;
1528 	case DRM_FORMAT_XRGB1555:
1529 		fb_format =
1530 		    AVIVO_D1GRPH_CONTROL_DEPTH_16BPP |
1531 		    AVIVO_D1GRPH_CONTROL_16BPP_ARGB1555;
1532 #ifdef __BIG_ENDIAN
1533 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_16BIT;
1534 #endif
1535 		break;
1536 	case DRM_FORMAT_RGB565:
1537 		fb_format =
1538 		    AVIVO_D1GRPH_CONTROL_DEPTH_16BPP |
1539 		    AVIVO_D1GRPH_CONTROL_16BPP_RGB565;
1540 #ifdef __BIG_ENDIAN
1541 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_16BIT;
1542 #endif
1543 		break;
1544 	case DRM_FORMAT_XRGB8888:
1545 	case DRM_FORMAT_ARGB8888:
1546 		fb_format =
1547 		    AVIVO_D1GRPH_CONTROL_DEPTH_32BPP |
1548 		    AVIVO_D1GRPH_CONTROL_32BPP_ARGB8888;
1549 #ifdef __BIG_ENDIAN
1550 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_32BIT;
1551 #endif
1552 		break;
1553 	case DRM_FORMAT_XRGB2101010:
1554 	case DRM_FORMAT_ARGB2101010:
1555 		fb_format =
1556 		    AVIVO_D1GRPH_CONTROL_DEPTH_32BPP |
1557 		    AVIVO_D1GRPH_CONTROL_32BPP_ARGB2101010;
1558 #ifdef __BIG_ENDIAN
1559 		fb_swap = R600_D1GRPH_SWAP_ENDIAN_32BIT;
1560 #endif
1561 		/* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
1562 		bypass_lut = true;
1563 		break;
1564 	case DRM_FORMAT_XBGR8888:
1565 	case DRM_FORMAT_ABGR8888:
1566 		fb_format =
1567 		    AVIVO_D1GRPH_CONTROL_DEPTH_32BPP |
1568 		    AVIVO_D1GRPH_CONTROL_32BPP_ARGB8888;
1569 		if (rdev->family >= CHIP_R600)
1570 			fb_swap =
1571 			    (R600_D1GRPH_RED_CROSSBAR(R600_D1GRPH_RED_SEL_B) |
1572 			     R600_D1GRPH_BLUE_CROSSBAR(R600_D1GRPH_BLUE_SEL_R));
1573 		else /* DCE1 (R5xx) */
1574 			fb_format |= AVIVO_D1GRPH_SWAP_RB;
1575 #ifdef __BIG_ENDIAN
1576 		fb_swap |= R600_D1GRPH_SWAP_ENDIAN_32BIT;
1577 #endif
1578 		break;
1579 	default:
1580 		DRM_ERROR("Unsupported screen format %s\n",
1581 		          drm_get_format_name(target_fb->format->format, &format_name));
1582 		return -EINVAL;
1583 	}
1584 
1585 	if (rdev->family >= CHIP_R600) {
1586 		if (tiling_flags & RADEON_TILING_MACRO)
1587 			fb_format |= R600_D1GRPH_ARRAY_MODE_2D_TILED_THIN1;
1588 		else if (tiling_flags & RADEON_TILING_MICRO)
1589 			fb_format |= R600_D1GRPH_ARRAY_MODE_1D_TILED_THIN1;
1590 	} else {
1591 		if (tiling_flags & RADEON_TILING_MACRO)
1592 			fb_format |= AVIVO_D1GRPH_MACRO_ADDRESS_MODE;
1593 
1594 		if (tiling_flags & RADEON_TILING_MICRO)
1595 			fb_format |= AVIVO_D1GRPH_TILED;
1596 	}
1597 
1598 	if (radeon_crtc->crtc_id == 0)
1599 		WREG32(AVIVO_D1VGA_CONTROL, 0);
1600 	else
1601 		WREG32(AVIVO_D2VGA_CONTROL, 0);
1602 
1603 	/* Make sure surface address is update at vertical blank rather than
1604 	 * horizontal blank
1605 	 */
1606 	WREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, 0);
1607 
1608 	if (rdev->family >= CHIP_RV770) {
1609 		if (radeon_crtc->crtc_id) {
1610 			WREG32(R700_D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1611 			WREG32(R700_D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1612 		} else {
1613 			WREG32(R700_D1GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1614 			WREG32(R700_D1GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(fb_location));
1615 		}
1616 	}
1617 	WREG32(AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
1618 	       (u32) fb_location);
1619 	WREG32(AVIVO_D1GRPH_SECONDARY_SURFACE_ADDRESS +
1620 	       radeon_crtc->crtc_offset, (u32) fb_location);
1621 	WREG32(AVIVO_D1GRPH_CONTROL + radeon_crtc->crtc_offset, fb_format);
1622 	if (rdev->family >= CHIP_R600)
1623 		WREG32(R600_D1GRPH_SWAP_CONTROL + radeon_crtc->crtc_offset, fb_swap);
1624 
1625 	/* LUT only has 256 slots for 8 bpc fb. Bypass for > 8 bpc scanout for precision */
1626 	WREG32_P(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset,
1627 		 (bypass_lut ? AVIVO_LUT_10BIT_BYPASS_EN : 0), ~AVIVO_LUT_10BIT_BYPASS_EN);
1628 
1629 	if (bypass_lut)
1630 		DRM_DEBUG_KMS("Bypassing hardware LUT due to 10 bit fb scanout.\n");
1631 
1632 	WREG32(AVIVO_D1GRPH_SURFACE_OFFSET_X + radeon_crtc->crtc_offset, 0);
1633 	WREG32(AVIVO_D1GRPH_SURFACE_OFFSET_Y + radeon_crtc->crtc_offset, 0);
1634 	WREG32(AVIVO_D1GRPH_X_START + radeon_crtc->crtc_offset, 0);
1635 	WREG32(AVIVO_D1GRPH_Y_START + radeon_crtc->crtc_offset, 0);
1636 	WREG32(AVIVO_D1GRPH_X_END + radeon_crtc->crtc_offset, target_fb->width);
1637 	WREG32(AVIVO_D1GRPH_Y_END + radeon_crtc->crtc_offset, target_fb->height);
1638 
1639 	fb_pitch_pixels = target_fb->pitches[0] / target_fb->format->cpp[0];
1640 	WREG32(AVIVO_D1GRPH_PITCH + radeon_crtc->crtc_offset, fb_pitch_pixels);
1641 	WREG32(AVIVO_D1GRPH_ENABLE + radeon_crtc->crtc_offset, 1);
1642 
1643 	WREG32(AVIVO_D1MODE_DESKTOP_HEIGHT + radeon_crtc->crtc_offset,
1644 	       target_fb->height);
1645 	x &= ~3;
1646 	y &= ~1;
1647 	WREG32(AVIVO_D1MODE_VIEWPORT_START + radeon_crtc->crtc_offset,
1648 	       (x << 16) | y);
1649 	viewport_w = crtc->mode.hdisplay;
1650 	viewport_h = (crtc->mode.vdisplay + 1) & ~1;
1651 	WREG32(AVIVO_D1MODE_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
1652 	       (viewport_w << 16) | viewport_h);
1653 
1654 	/* set pageflip to happen only at start of vblank interval (front porch) */
1655 	WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 3);
1656 
1657 	if (!atomic && fb && fb != crtc->primary->fb) {
1658 		rbo = gem_to_radeon_bo(fb->obj[0]);
1659 		r = radeon_bo_reserve(rbo, false);
1660 		if (unlikely(r != 0))
1661 			return r;
1662 		radeon_bo_unpin(rbo);
1663 		radeon_bo_unreserve(rbo);
1664 	}
1665 
1666 	/* Bytes per pixel may have changed */
1667 	radeon_bandwidth_update(rdev);
1668 
1669 	return 0;
1670 }
1671 
1672 int atombios_crtc_set_base(struct drm_crtc *crtc, int x, int y,
1673 			   struct drm_framebuffer *old_fb)
1674 {
1675 	struct drm_device *dev = crtc->dev;
1676 	struct radeon_device *rdev = dev->dev_private;
1677 
1678 	if (ASIC_IS_DCE4(rdev))
1679 		return dce4_crtc_do_set_base(crtc, old_fb, x, y, 0);
1680 	else if (ASIC_IS_AVIVO(rdev))
1681 		return avivo_crtc_do_set_base(crtc, old_fb, x, y, 0);
1682 	else
1683 		return radeon_crtc_do_set_base(crtc, old_fb, x, y, 0);
1684 }
1685 
1686 int atombios_crtc_set_base_atomic(struct drm_crtc *crtc,
1687 				  struct drm_framebuffer *fb,
1688 				  int x, int y, enum mode_set_atomic state)
1689 {
1690 	struct drm_device *dev = crtc->dev;
1691 	struct radeon_device *rdev = dev->dev_private;
1692 
1693 	if (ASIC_IS_DCE4(rdev))
1694 		return dce4_crtc_do_set_base(crtc, fb, x, y, 1);
1695 	else if (ASIC_IS_AVIVO(rdev))
1696 		return avivo_crtc_do_set_base(crtc, fb, x, y, 1);
1697 	else
1698 		return radeon_crtc_do_set_base(crtc, fb, x, y, 1);
1699 }
1700 
1701 /* properly set additional regs when using atombios */
1702 static void radeon_legacy_atom_fixup(struct drm_crtc *crtc)
1703 {
1704 	struct drm_device *dev = crtc->dev;
1705 	struct radeon_device *rdev = dev->dev_private;
1706 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1707 	u32 disp_merge_cntl;
1708 
1709 	switch (radeon_crtc->crtc_id) {
1710 	case 0:
1711 		disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
1712 		disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
1713 		WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
1714 		break;
1715 	case 1:
1716 		disp_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
1717 		disp_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
1718 		WREG32(RADEON_DISP2_MERGE_CNTL, disp_merge_cntl);
1719 		WREG32(RADEON_FP_H2_SYNC_STRT_WID,   RREG32(RADEON_CRTC2_H_SYNC_STRT_WID));
1720 		WREG32(RADEON_FP_V2_SYNC_STRT_WID,   RREG32(RADEON_CRTC2_V_SYNC_STRT_WID));
1721 		break;
1722 	}
1723 }
1724 
1725 /**
1726  * radeon_get_pll_use_mask - look up a mask of which pplls are in use
1727  *
1728  * @crtc: drm crtc
1729  *
1730  * Returns the mask of which PPLLs (Pixel PLLs) are in use.
1731  */
1732 static u32 radeon_get_pll_use_mask(struct drm_crtc *crtc)
1733 {
1734 	struct drm_device *dev = crtc->dev;
1735 	struct drm_crtc *test_crtc;
1736 	struct radeon_crtc *test_radeon_crtc;
1737 	u32 pll_in_use = 0;
1738 
1739 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1740 		if (crtc == test_crtc)
1741 			continue;
1742 
1743 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1744 		if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1745 			pll_in_use |= (1 << test_radeon_crtc->pll_id);
1746 	}
1747 	return pll_in_use;
1748 }
1749 
1750 /**
1751  * radeon_get_shared_dp_ppll - return the PPLL used by another crtc for DP
1752  *
1753  * @crtc: drm crtc
1754  *
1755  * Returns the PPLL (Pixel PLL) used by another crtc/encoder which is
1756  * also in DP mode.  For DP, a single PPLL can be used for all DP
1757  * crtcs/encoders.
1758  */
1759 static int radeon_get_shared_dp_ppll(struct drm_crtc *crtc)
1760 {
1761 	struct drm_device *dev = crtc->dev;
1762 	struct radeon_device *rdev = dev->dev_private;
1763 	struct drm_crtc *test_crtc;
1764 	struct radeon_crtc *test_radeon_crtc;
1765 
1766 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1767 		if (crtc == test_crtc)
1768 			continue;
1769 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1770 		if (test_radeon_crtc->encoder &&
1771 		    ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
1772 			/* PPLL2 is exclusive to UNIPHYA on DCE61 */
1773 			if (ASIC_IS_DCE61(rdev) && !ASIC_IS_DCE8(rdev) &&
1774 			    test_radeon_crtc->pll_id == ATOM_PPLL2)
1775 				continue;
1776 			/* for DP use the same PLL for all */
1777 			if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1778 				return test_radeon_crtc->pll_id;
1779 		}
1780 	}
1781 	return ATOM_PPLL_INVALID;
1782 }
1783 
1784 /**
1785  * radeon_get_shared_nondp_ppll - return the PPLL used by another non-DP crtc
1786  *
1787  * @crtc: drm crtc
1788  * @encoder: drm encoder
1789  *
1790  * Returns the PPLL (Pixel PLL) used by another non-DP crtc/encoder which can
1791  * be shared (i.e., same clock).
1792  */
1793 static int radeon_get_shared_nondp_ppll(struct drm_crtc *crtc)
1794 {
1795 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1796 	struct drm_device *dev = crtc->dev;
1797 	struct radeon_device *rdev = dev->dev_private;
1798 	struct drm_crtc *test_crtc;
1799 	struct radeon_crtc *test_radeon_crtc;
1800 	u32 adjusted_clock, test_adjusted_clock;
1801 
1802 	adjusted_clock = radeon_crtc->adjusted_clock;
1803 
1804 	if (adjusted_clock == 0)
1805 		return ATOM_PPLL_INVALID;
1806 
1807 	list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
1808 		if (crtc == test_crtc)
1809 			continue;
1810 		test_radeon_crtc = to_radeon_crtc(test_crtc);
1811 		if (test_radeon_crtc->encoder &&
1812 		    !ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_radeon_crtc->encoder))) {
1813 			/* PPLL2 is exclusive to UNIPHYA on DCE61 */
1814 			if (ASIC_IS_DCE61(rdev) && !ASIC_IS_DCE8(rdev) &&
1815 			    test_radeon_crtc->pll_id == ATOM_PPLL2)
1816 				continue;
1817 			/* check if we are already driving this connector with another crtc */
1818 			if (test_radeon_crtc->connector == radeon_crtc->connector) {
1819 				/* if we are, return that pll */
1820 				if (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID)
1821 					return test_radeon_crtc->pll_id;
1822 			}
1823 			/* for non-DP check the clock */
1824 			test_adjusted_clock = test_radeon_crtc->adjusted_clock;
1825 			if ((crtc->mode.clock == test_crtc->mode.clock) &&
1826 			    (adjusted_clock == test_adjusted_clock) &&
1827 			    (radeon_crtc->ss_enabled == test_radeon_crtc->ss_enabled) &&
1828 			    (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID))
1829 				return test_radeon_crtc->pll_id;
1830 		}
1831 	}
1832 	return ATOM_PPLL_INVALID;
1833 }
1834 
1835 /**
1836  * radeon_atom_pick_pll - Allocate a PPLL for use by the crtc.
1837  *
1838  * @crtc: drm crtc
1839  *
1840  * Returns the PPLL (Pixel PLL) to be used by the crtc.  For DP monitors
1841  * a single PPLL can be used for all DP crtcs/encoders.  For non-DP
1842  * monitors a dedicated PPLL must be used.  If a particular board has
1843  * an external DP PLL, return ATOM_PPLL_INVALID to skip PLL programming
1844  * as there is no need to program the PLL itself.  If we are not able to
1845  * allocate a PLL, return ATOM_PPLL_INVALID to skip PLL programming to
1846  * avoid messing up an existing monitor.
1847  *
1848  * Asic specific PLL information
1849  *
1850  * DCE 8.x
1851  * KB/KV
1852  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP)
1853  * CI
1854  * - PPLL0, PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1855  *
1856  * DCE 6.1
1857  * - PPLL2 is only available to UNIPHYA (both DP and non-DP)
1858  * - PPLL0, PPLL1 are available for UNIPHYB/C/D/E/F (both DP and non-DP)
1859  *
1860  * DCE 6.0
1861  * - PPLL0 is available to all UNIPHY (DP only)
1862  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1863  *
1864  * DCE 5.0
1865  * - DCPLL is available to all UNIPHY (DP only)
1866  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1867  *
1868  * DCE 3.0/4.0/4.1
1869  * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
1870  *
1871  */
1872 static int radeon_atom_pick_pll(struct drm_crtc *crtc)
1873 {
1874 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1875 	struct drm_device *dev = crtc->dev;
1876 	struct radeon_device *rdev = dev->dev_private;
1877 	struct radeon_encoder *radeon_encoder =
1878 		to_radeon_encoder(radeon_crtc->encoder);
1879 	u32 pll_in_use;
1880 	int pll;
1881 
1882 	if (ASIC_IS_DCE8(rdev)) {
1883 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1884 			if (rdev->clock.dp_extclk)
1885 				/* skip PPLL programming if using ext clock */
1886 				return ATOM_PPLL_INVALID;
1887 			else {
1888 				/* use the same PPLL for all DP monitors */
1889 				pll = radeon_get_shared_dp_ppll(crtc);
1890 				if (pll != ATOM_PPLL_INVALID)
1891 					return pll;
1892 			}
1893 		} else {
1894 			/* use the same PPLL for all monitors with the same clock */
1895 			pll = radeon_get_shared_nondp_ppll(crtc);
1896 			if (pll != ATOM_PPLL_INVALID)
1897 				return pll;
1898 		}
1899 		/* otherwise, pick one of the plls */
1900 		if ((rdev->family == CHIP_KABINI) ||
1901 		    (rdev->family == CHIP_MULLINS)) {
1902 			/* KB/ML has PPLL1 and PPLL2 */
1903 			pll_in_use = radeon_get_pll_use_mask(crtc);
1904 			if (!(pll_in_use & (1 << ATOM_PPLL2)))
1905 				return ATOM_PPLL2;
1906 			if (!(pll_in_use & (1 << ATOM_PPLL1)))
1907 				return ATOM_PPLL1;
1908 			DRM_ERROR("unable to allocate a PPLL\n");
1909 			return ATOM_PPLL_INVALID;
1910 		} else {
1911 			/* CI/KV has PPLL0, PPLL1, and PPLL2 */
1912 			pll_in_use = radeon_get_pll_use_mask(crtc);
1913 			if (!(pll_in_use & (1 << ATOM_PPLL2)))
1914 				return ATOM_PPLL2;
1915 			if (!(pll_in_use & (1 << ATOM_PPLL1)))
1916 				return ATOM_PPLL1;
1917 			if (!(pll_in_use & (1 << ATOM_PPLL0)))
1918 				return ATOM_PPLL0;
1919 			DRM_ERROR("unable to allocate a PPLL\n");
1920 			return ATOM_PPLL_INVALID;
1921 		}
1922 	} else if (ASIC_IS_DCE61(rdev)) {
1923 		struct radeon_encoder_atom_dig *dig =
1924 			radeon_encoder->enc_priv;
1925 
1926 		if ((radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_UNIPHY) &&
1927 		    (dig->linkb == false))
1928 			/* UNIPHY A uses PPLL2 */
1929 			return ATOM_PPLL2;
1930 		else if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1931 			/* UNIPHY B/C/D/E/F */
1932 			if (rdev->clock.dp_extclk)
1933 				/* skip PPLL programming if using ext clock */
1934 				return ATOM_PPLL_INVALID;
1935 			else {
1936 				/* use the same PPLL for all DP monitors */
1937 				pll = radeon_get_shared_dp_ppll(crtc);
1938 				if (pll != ATOM_PPLL_INVALID)
1939 					return pll;
1940 			}
1941 		} else {
1942 			/* use the same PPLL for all monitors with the same clock */
1943 			pll = radeon_get_shared_nondp_ppll(crtc);
1944 			if (pll != ATOM_PPLL_INVALID)
1945 				return pll;
1946 		}
1947 		/* UNIPHY B/C/D/E/F */
1948 		pll_in_use = radeon_get_pll_use_mask(crtc);
1949 		if (!(pll_in_use & (1 << ATOM_PPLL0)))
1950 			return ATOM_PPLL0;
1951 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
1952 			return ATOM_PPLL1;
1953 		DRM_ERROR("unable to allocate a PPLL\n");
1954 		return ATOM_PPLL_INVALID;
1955 	} else if (ASIC_IS_DCE41(rdev)) {
1956 		/* Don't share PLLs on DCE4.1 chips */
1957 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1958 			if (rdev->clock.dp_extclk)
1959 				/* skip PPLL programming if using ext clock */
1960 				return ATOM_PPLL_INVALID;
1961 		}
1962 		pll_in_use = radeon_get_pll_use_mask(crtc);
1963 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
1964 			return ATOM_PPLL1;
1965 		if (!(pll_in_use & (1 << ATOM_PPLL2)))
1966 			return ATOM_PPLL2;
1967 		DRM_ERROR("unable to allocate a PPLL\n");
1968 		return ATOM_PPLL_INVALID;
1969 	} else if (ASIC_IS_DCE4(rdev)) {
1970 		/* in DP mode, the DP ref clock can come from PPLL, DCPLL, or ext clock,
1971 		 * depending on the asic:
1972 		 * DCE4: PPLL or ext clock
1973 		 * DCE5: PPLL, DCPLL, or ext clock
1974 		 * DCE6: PPLL, PPLL0, or ext clock
1975 		 *
1976 		 * Setting ATOM_PPLL_INVALID will cause SetPixelClock to skip
1977 		 * PPLL/DCPLL programming and only program the DP DTO for the
1978 		 * crtc virtual pixel clock.
1979 		 */
1980 		if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1981 			if (rdev->clock.dp_extclk)
1982 				/* skip PPLL programming if using ext clock */
1983 				return ATOM_PPLL_INVALID;
1984 			else if (ASIC_IS_DCE6(rdev))
1985 				/* use PPLL0 for all DP */
1986 				return ATOM_PPLL0;
1987 			else if (ASIC_IS_DCE5(rdev))
1988 				/* use DCPLL for all DP */
1989 				return ATOM_DCPLL;
1990 			else {
1991 				/* use the same PPLL for all DP monitors */
1992 				pll = radeon_get_shared_dp_ppll(crtc);
1993 				if (pll != ATOM_PPLL_INVALID)
1994 					return pll;
1995 			}
1996 		} else {
1997 			/* use the same PPLL for all monitors with the same clock */
1998 			pll = radeon_get_shared_nondp_ppll(crtc);
1999 			if (pll != ATOM_PPLL_INVALID)
2000 				return pll;
2001 		}
2002 		/* all other cases */
2003 		pll_in_use = radeon_get_pll_use_mask(crtc);
2004 		if (!(pll_in_use & (1 << ATOM_PPLL1)))
2005 			return ATOM_PPLL1;
2006 		if (!(pll_in_use & (1 << ATOM_PPLL2)))
2007 			return ATOM_PPLL2;
2008 		DRM_ERROR("unable to allocate a PPLL\n");
2009 		return ATOM_PPLL_INVALID;
2010 	} else {
2011 		/* on pre-R5xx asics, the crtc to pll mapping is hardcoded */
2012 		/* some atombios (observed in some DCE2/DCE3) code have a bug,
2013 		 * the matching btw pll and crtc is done through
2014 		 * PCLK_CRTC[1|2]_CNTL (0x480/0x484) but atombios code use the
2015 		 * pll (1 or 2) to select which register to write. ie if using
2016 		 * pll1 it will use PCLK_CRTC1_CNTL (0x480) and if using pll2
2017 		 * it will use PCLK_CRTC2_CNTL (0x484), it then use crtc id to
2018 		 * choose which value to write. Which is reverse order from
2019 		 * register logic. So only case that works is when pllid is
2020 		 * same as crtcid or when both pll and crtc are enabled and
2021 		 * both use same clock.
2022 		 *
2023 		 * So just return crtc id as if crtc and pll were hard linked
2024 		 * together even if they aren't
2025 		 */
2026 		return radeon_crtc->crtc_id;
2027 	}
2028 }
2029 
2030 void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev)
2031 {
2032 	/* always set DCPLL */
2033 	if (ASIC_IS_DCE6(rdev))
2034 		atombios_crtc_set_disp_eng_pll(rdev, rdev->clock.default_dispclk);
2035 	else if (ASIC_IS_DCE4(rdev)) {
2036 		struct radeon_atom_ss ss;
2037 		bool ss_enabled = radeon_atombios_get_asic_ss_info(rdev, &ss,
2038 								   ASIC_INTERNAL_SS_ON_DCPLL,
2039 								   rdev->clock.default_dispclk);
2040 		if (ss_enabled)
2041 			atombios_crtc_program_ss(rdev, ATOM_DISABLE, ATOM_DCPLL, -1, &ss);
2042 		/* XXX: DCE5, make sure voltage, dispclk is high enough */
2043 		atombios_crtc_set_disp_eng_pll(rdev, rdev->clock.default_dispclk);
2044 		if (ss_enabled)
2045 			atombios_crtc_program_ss(rdev, ATOM_ENABLE, ATOM_DCPLL, -1, &ss);
2046 	}
2047 
2048 }
2049 
2050 int atombios_crtc_mode_set(struct drm_crtc *crtc,
2051 			   struct drm_display_mode *mode,
2052 			   struct drm_display_mode *adjusted_mode,
2053 			   int x, int y, struct drm_framebuffer *old_fb)
2054 {
2055 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
2056 	struct drm_device *dev = crtc->dev;
2057 	struct radeon_device *rdev = dev->dev_private;
2058 	struct radeon_encoder *radeon_encoder =
2059 		to_radeon_encoder(radeon_crtc->encoder);
2060 	bool is_tvcv = false;
2061 
2062 	if (radeon_encoder->active_device &
2063 	    (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT))
2064 		is_tvcv = true;
2065 
2066 	if (!radeon_crtc->adjusted_clock)
2067 		return -EINVAL;
2068 
2069 	atombios_crtc_set_pll(crtc, adjusted_mode);
2070 
2071 	if (ASIC_IS_DCE4(rdev))
2072 		atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
2073 	else if (ASIC_IS_AVIVO(rdev)) {
2074 		if (is_tvcv)
2075 			atombios_crtc_set_timing(crtc, adjusted_mode);
2076 		else
2077 			atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
2078 	} else {
2079 		atombios_crtc_set_timing(crtc, adjusted_mode);
2080 		if (radeon_crtc->crtc_id == 0)
2081 			atombios_set_crtc_dtd_timing(crtc, adjusted_mode);
2082 		radeon_legacy_atom_fixup(crtc);
2083 	}
2084 	atombios_crtc_set_base(crtc, x, y, old_fb);
2085 	atombios_overscan_setup(crtc, mode, adjusted_mode);
2086 	atombios_scaler_setup(crtc);
2087 	radeon_cursor_reset(crtc);
2088 	/* update the hw version fpr dpm */
2089 	radeon_crtc->hw_mode = *adjusted_mode;
2090 
2091 	return 0;
2092 }
2093 
2094 static bool atombios_crtc_mode_fixup(struct drm_crtc *crtc,
2095 				     const struct drm_display_mode *mode,
2096 				     struct drm_display_mode *adjusted_mode)
2097 {
2098 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
2099 	struct drm_device *dev = crtc->dev;
2100 	struct drm_encoder *encoder;
2101 
2102 	/* assign the encoder to the radeon crtc to avoid repeated lookups later */
2103 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
2104 		if (encoder->crtc == crtc) {
2105 			radeon_crtc->encoder = encoder;
2106 			radeon_crtc->connector = radeon_get_connector_for_encoder(encoder);
2107 			break;
2108 		}
2109 	}
2110 	if ((radeon_crtc->encoder == NULL) || (radeon_crtc->connector == NULL)) {
2111 		radeon_crtc->encoder = NULL;
2112 		radeon_crtc->connector = NULL;
2113 		return false;
2114 	}
2115 	if (radeon_crtc->encoder) {
2116 		struct radeon_encoder *radeon_encoder =
2117 			to_radeon_encoder(radeon_crtc->encoder);
2118 
2119 		radeon_crtc->output_csc = radeon_encoder->output_csc;
2120 	}
2121 	if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
2122 		return false;
2123 	if (!atombios_crtc_prepare_pll(crtc, adjusted_mode))
2124 		return false;
2125 	/* pick pll */
2126 	radeon_crtc->pll_id = radeon_atom_pick_pll(crtc);
2127 	/* if we can't get a PPLL for a non-DP encoder, fail */
2128 	if ((radeon_crtc->pll_id == ATOM_PPLL_INVALID) &&
2129 	    !ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder)))
2130 		return false;
2131 
2132 	return true;
2133 }
2134 
2135 static void atombios_crtc_prepare(struct drm_crtc *crtc)
2136 {
2137 	struct drm_device *dev = crtc->dev;
2138 	struct radeon_device *rdev = dev->dev_private;
2139 
2140 	/* disable crtc pair power gating before programming */
2141 	if (ASIC_IS_DCE6(rdev))
2142 		atombios_powergate_crtc(crtc, ATOM_DISABLE);
2143 
2144 	atombios_lock_crtc(crtc, ATOM_ENABLE);
2145 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
2146 }
2147 
2148 static void atombios_crtc_commit(struct drm_crtc *crtc)
2149 {
2150 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
2151 	atombios_lock_crtc(crtc, ATOM_DISABLE);
2152 }
2153 
2154 static void atombios_crtc_disable(struct drm_crtc *crtc)
2155 {
2156 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
2157 	struct drm_device *dev = crtc->dev;
2158 	struct radeon_device *rdev = dev->dev_private;
2159 	struct radeon_atom_ss ss;
2160 	int i;
2161 
2162 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
2163 	if (crtc->primary->fb) {
2164 		int r;
2165 		struct radeon_bo *rbo;
2166 
2167 		rbo = gem_to_radeon_bo(crtc->primary->fb->obj[0]);
2168 		r = radeon_bo_reserve(rbo, false);
2169 		if (unlikely(r))
2170 			DRM_ERROR("failed to reserve rbo before unpin\n");
2171 		else {
2172 			radeon_bo_unpin(rbo);
2173 			radeon_bo_unreserve(rbo);
2174 		}
2175 	}
2176 	/* disable the GRPH */
2177 	if (ASIC_IS_DCE4(rdev))
2178 		WREG32(EVERGREEN_GRPH_ENABLE + radeon_crtc->crtc_offset, 0);
2179 	else if (ASIC_IS_AVIVO(rdev))
2180 		WREG32(AVIVO_D1GRPH_ENABLE + radeon_crtc->crtc_offset, 0);
2181 
2182 	if (ASIC_IS_DCE6(rdev))
2183 		atombios_powergate_crtc(crtc, ATOM_ENABLE);
2184 
2185 	for (i = 0; i < rdev->num_crtc; i++) {
2186 		if (rdev->mode_info.crtcs[i] &&
2187 		    rdev->mode_info.crtcs[i]->enabled &&
2188 		    i != radeon_crtc->crtc_id &&
2189 		    radeon_crtc->pll_id == rdev->mode_info.crtcs[i]->pll_id) {
2190 			/* one other crtc is using this pll don't turn
2191 			 * off the pll
2192 			 */
2193 			goto done;
2194 		}
2195 	}
2196 
2197 	switch (radeon_crtc->pll_id) {
2198 	case ATOM_PPLL1:
2199 	case ATOM_PPLL2:
2200 		/* disable the ppll */
2201 		atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
2202 					  0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
2203 		break;
2204 	case ATOM_PPLL0:
2205 		/* disable the ppll */
2206 		if ((rdev->family == CHIP_ARUBA) ||
2207 		    (rdev->family == CHIP_KAVERI) ||
2208 		    (rdev->family == CHIP_BONAIRE) ||
2209 		    (rdev->family == CHIP_HAWAII))
2210 			atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
2211 						  0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
2212 		break;
2213 	default:
2214 		break;
2215 	}
2216 done:
2217 	radeon_crtc->pll_id = ATOM_PPLL_INVALID;
2218 	radeon_crtc->adjusted_clock = 0;
2219 	radeon_crtc->encoder = NULL;
2220 	radeon_crtc->connector = NULL;
2221 }
2222 
2223 static const struct drm_crtc_helper_funcs atombios_helper_funcs = {
2224 	.dpms = atombios_crtc_dpms,
2225 	.mode_fixup = atombios_crtc_mode_fixup,
2226 	.mode_set = atombios_crtc_mode_set,
2227 	.mode_set_base = atombios_crtc_set_base,
2228 	.mode_set_base_atomic = atombios_crtc_set_base_atomic,
2229 	.prepare = atombios_crtc_prepare,
2230 	.commit = atombios_crtc_commit,
2231 	.disable = atombios_crtc_disable,
2232 };
2233 
2234 void radeon_atombios_init_crtc(struct drm_device *dev,
2235 			       struct radeon_crtc *radeon_crtc)
2236 {
2237 	struct radeon_device *rdev = dev->dev_private;
2238 
2239 	if (ASIC_IS_DCE4(rdev)) {
2240 		switch (radeon_crtc->crtc_id) {
2241 		case 0:
2242 		default:
2243 			radeon_crtc->crtc_offset = EVERGREEN_CRTC0_REGISTER_OFFSET;
2244 			break;
2245 		case 1:
2246 			radeon_crtc->crtc_offset = EVERGREEN_CRTC1_REGISTER_OFFSET;
2247 			break;
2248 		case 2:
2249 			radeon_crtc->crtc_offset = EVERGREEN_CRTC2_REGISTER_OFFSET;
2250 			break;
2251 		case 3:
2252 			radeon_crtc->crtc_offset = EVERGREEN_CRTC3_REGISTER_OFFSET;
2253 			break;
2254 		case 4:
2255 			radeon_crtc->crtc_offset = EVERGREEN_CRTC4_REGISTER_OFFSET;
2256 			break;
2257 		case 5:
2258 			radeon_crtc->crtc_offset = EVERGREEN_CRTC5_REGISTER_OFFSET;
2259 			break;
2260 		}
2261 	} else {
2262 		if (radeon_crtc->crtc_id == 1)
2263 			radeon_crtc->crtc_offset =
2264 				AVIVO_D2CRTC_H_TOTAL - AVIVO_D1CRTC_H_TOTAL;
2265 		else
2266 			radeon_crtc->crtc_offset = 0;
2267 	}
2268 	radeon_crtc->pll_id = ATOM_PPLL_INVALID;
2269 	radeon_crtc->adjusted_clock = 0;
2270 	radeon_crtc->encoder = NULL;
2271 	radeon_crtc->connector = NULL;
2272 	drm_crtc_helper_add(&radeon_crtc->base, &atombios_helper_funcs);
2273 }
2274