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 
27 #include <drm/drm_crtc_helper.h>
28 #include <drm/amdgpu_drm.h>
29 #include <drm/drm_fixed.h>
30 #include "amdgpu.h"
31 #include "atom.h"
32 #include "atom-bits.h"
33 #include "atombios_encoders.h"
34 #include "atombios_crtc.h"
35 #include "amdgpu_atombios.h"
36 #include "amdgpu_pll.h"
37 #include "amdgpu_connectors.h"
38 
39 void amdgpu_atombios_crtc_overscan_setup(struct drm_crtc *crtc,
40 				  struct drm_display_mode *mode,
41 				  struct drm_display_mode *adjusted_mode)
42 {
43 	struct drm_device *dev = crtc->dev;
44 	struct amdgpu_device *adev = drm_to_adev(dev);
45 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
46 	SET_CRTC_OVERSCAN_PS_ALLOCATION args;
47 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_OverScan);
48 	int a1, a2;
49 
50 	memset(&args, 0, sizeof(args));
51 
52 	args.ucCRTC = amdgpu_crtc->crtc_id;
53 
54 	switch (amdgpu_crtc->rmx_type) {
55 	case RMX_CENTER:
56 		args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
57 		args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2);
58 		args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
59 		args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2);
60 		break;
61 	case RMX_ASPECT:
62 		a1 = mode->crtc_vdisplay * adjusted_mode->crtc_hdisplay;
63 		a2 = adjusted_mode->crtc_vdisplay * mode->crtc_hdisplay;
64 
65 		if (a1 > a2) {
66 			args.usOverscanLeft = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
67 			args.usOverscanRight = cpu_to_le16((adjusted_mode->crtc_hdisplay - (a2 / mode->crtc_vdisplay)) / 2);
68 		} else if (a2 > a1) {
69 			args.usOverscanTop = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
70 			args.usOverscanBottom = cpu_to_le16((adjusted_mode->crtc_vdisplay - (a1 / mode->crtc_hdisplay)) / 2);
71 		}
72 		break;
73 	case RMX_FULL:
74 	default:
75 		args.usOverscanRight = cpu_to_le16(amdgpu_crtc->h_border);
76 		args.usOverscanLeft = cpu_to_le16(amdgpu_crtc->h_border);
77 		args.usOverscanBottom = cpu_to_le16(amdgpu_crtc->v_border);
78 		args.usOverscanTop = cpu_to_le16(amdgpu_crtc->v_border);
79 		break;
80 	}
81 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
82 }
83 
84 void amdgpu_atombios_crtc_scaler_setup(struct drm_crtc *crtc)
85 {
86 	struct drm_device *dev = crtc->dev;
87 	struct amdgpu_device *adev = drm_to_adev(dev);
88 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
89 	ENABLE_SCALER_PS_ALLOCATION args;
90 	int index = GetIndexIntoMasterTable(COMMAND, EnableScaler);
91 
92 	memset(&args, 0, sizeof(args));
93 
94 	args.ucScaler = amdgpu_crtc->crtc_id;
95 
96 	switch (amdgpu_crtc->rmx_type) {
97 	case RMX_FULL:
98 		args.ucEnable = ATOM_SCALER_EXPANSION;
99 		break;
100 	case RMX_CENTER:
101 		args.ucEnable = ATOM_SCALER_CENTER;
102 		break;
103 	case RMX_ASPECT:
104 		args.ucEnable = ATOM_SCALER_EXPANSION;
105 		break;
106 	default:
107 		args.ucEnable = ATOM_SCALER_DISABLE;
108 		break;
109 	}
110 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
111 }
112 
113 void amdgpu_atombios_crtc_lock(struct drm_crtc *crtc, int lock)
114 {
115 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
116 	struct drm_device *dev = crtc->dev;
117 	struct amdgpu_device *adev = drm_to_adev(dev);
118 	int index =
119 	    GetIndexIntoMasterTable(COMMAND, UpdateCRTC_DoubleBufferRegisters);
120 	ENABLE_CRTC_PS_ALLOCATION args;
121 
122 	memset(&args, 0, sizeof(args));
123 
124 	args.ucCRTC = amdgpu_crtc->crtc_id;
125 	args.ucEnable = lock;
126 
127 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
128 }
129 
130 void amdgpu_atombios_crtc_enable(struct drm_crtc *crtc, int state)
131 {
132 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
133 	struct drm_device *dev = crtc->dev;
134 	struct amdgpu_device *adev = drm_to_adev(dev);
135 	int index = GetIndexIntoMasterTable(COMMAND, EnableCRTC);
136 	ENABLE_CRTC_PS_ALLOCATION args;
137 
138 	memset(&args, 0, sizeof(args));
139 
140 	args.ucCRTC = amdgpu_crtc->crtc_id;
141 	args.ucEnable = state;
142 
143 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
144 }
145 
146 void amdgpu_atombios_crtc_blank(struct drm_crtc *crtc, int state)
147 {
148 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
149 	struct drm_device *dev = crtc->dev;
150 	struct amdgpu_device *adev = drm_to_adev(dev);
151 	int index = GetIndexIntoMasterTable(COMMAND, BlankCRTC);
152 	BLANK_CRTC_PS_ALLOCATION args;
153 
154 	memset(&args, 0, sizeof(args));
155 
156 	args.ucCRTC = amdgpu_crtc->crtc_id;
157 	args.ucBlanking = state;
158 
159 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
160 }
161 
162 void amdgpu_atombios_crtc_powergate(struct drm_crtc *crtc, int state)
163 {
164 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
165 	struct drm_device *dev = crtc->dev;
166 	struct amdgpu_device *adev = drm_to_adev(dev);
167 	int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
168 	ENABLE_DISP_POWER_GATING_PS_ALLOCATION args;
169 
170 	memset(&args, 0, sizeof(args));
171 
172 	args.ucDispPipeId = amdgpu_crtc->crtc_id;
173 	args.ucEnable = state;
174 
175 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
176 }
177 
178 void amdgpu_atombios_crtc_powergate_init(struct amdgpu_device *adev)
179 {
180 	int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
181 	ENABLE_DISP_POWER_GATING_PS_ALLOCATION args;
182 
183 	memset(&args, 0, sizeof(args));
184 
185 	args.ucEnable = ATOM_INIT;
186 
187 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
188 }
189 
190 void amdgpu_atombios_crtc_set_dtd_timing(struct drm_crtc *crtc,
191 				  struct drm_display_mode *mode)
192 {
193 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
194 	struct drm_device *dev = crtc->dev;
195 	struct amdgpu_device *adev = drm_to_adev(dev);
196 	SET_CRTC_USING_DTD_TIMING_PARAMETERS args;
197 	int index = GetIndexIntoMasterTable(COMMAND, SetCRTC_UsingDTDTiming);
198 	u16 misc = 0;
199 
200 	memset(&args, 0, sizeof(args));
201 	args.usH_Size = cpu_to_le16(mode->crtc_hdisplay - (amdgpu_crtc->h_border * 2));
202 	args.usH_Blanking_Time =
203 		cpu_to_le16(mode->crtc_hblank_end - mode->crtc_hdisplay + (amdgpu_crtc->h_border * 2));
204 	args.usV_Size = cpu_to_le16(mode->crtc_vdisplay - (amdgpu_crtc->v_border * 2));
205 	args.usV_Blanking_Time =
206 		cpu_to_le16(mode->crtc_vblank_end - mode->crtc_vdisplay + (amdgpu_crtc->v_border * 2));
207 	args.usH_SyncOffset =
208 		cpu_to_le16(mode->crtc_hsync_start - mode->crtc_hdisplay + amdgpu_crtc->h_border);
209 	args.usH_SyncWidth =
210 		cpu_to_le16(mode->crtc_hsync_end - mode->crtc_hsync_start);
211 	args.usV_SyncOffset =
212 		cpu_to_le16(mode->crtc_vsync_start - mode->crtc_vdisplay + amdgpu_crtc->v_border);
213 	args.usV_SyncWidth =
214 		cpu_to_le16(mode->crtc_vsync_end - mode->crtc_vsync_start);
215 	args.ucH_Border = amdgpu_crtc->h_border;
216 	args.ucV_Border = amdgpu_crtc->v_border;
217 
218 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
219 		misc |= ATOM_VSYNC_POLARITY;
220 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
221 		misc |= ATOM_HSYNC_POLARITY;
222 	if (mode->flags & DRM_MODE_FLAG_CSYNC)
223 		misc |= ATOM_COMPOSITESYNC;
224 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
225 		misc |= ATOM_INTERLACE;
226 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
227 		misc |= ATOM_DOUBLE_CLOCK_MODE;
228 
229 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
230 	args.ucCRTC = amdgpu_crtc->crtc_id;
231 
232 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
233 }
234 
235 union atom_enable_ss {
236 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION v1;
237 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V2 v2;
238 	ENABLE_SPREAD_SPECTRUM_ON_PPLL_V3 v3;
239 };
240 
241 static void amdgpu_atombios_crtc_program_ss(struct amdgpu_device *adev,
242 				     int enable,
243 				     int pll_id,
244 				     int crtc_id,
245 				     struct amdgpu_atom_ss *ss)
246 {
247 	unsigned i;
248 	int index = GetIndexIntoMasterTable(COMMAND, EnableSpreadSpectrumOnPPLL);
249 	union atom_enable_ss args;
250 
251 	if (enable) {
252 		/* Don't mess with SS if percentage is 0 or external ss.
253 		 * SS is already disabled previously, and disabling it
254 		 * again can cause display problems if the pll is already
255 		 * programmed.
256 		 */
257 		if (ss->percentage == 0)
258 			return;
259 		if (ss->type & ATOM_EXTERNAL_SS_MASK)
260 			return;
261 	} else {
262 		for (i = 0; i < adev->mode_info.num_crtc; i++) {
263 			if (adev->mode_info.crtcs[i] &&
264 			    adev->mode_info.crtcs[i]->enabled &&
265 			    i != crtc_id &&
266 			    pll_id == adev->mode_info.crtcs[i]->pll_id) {
267 				/* one other crtc is using this pll don't turn
268 				 * off spread spectrum as it might turn off
269 				 * display on active crtc
270 				 */
271 				return;
272 			}
273 		}
274 	}
275 
276 	memset(&args, 0, sizeof(args));
277 
278 	args.v3.usSpreadSpectrumAmountFrac = cpu_to_le16(0);
279 	args.v3.ucSpreadSpectrumType = ss->type & ATOM_SS_CENTRE_SPREAD_MODE_MASK;
280 	switch (pll_id) {
281 	case ATOM_PPLL1:
282 		args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P1PLL;
283 		break;
284 	case ATOM_PPLL2:
285 		args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P2PLL;
286 		break;
287 	case ATOM_DCPLL:
288 		args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_DCPLL;
289 		break;
290 	case ATOM_PPLL_INVALID:
291 		return;
292 	}
293 	args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
294 	args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
295 	args.v3.ucEnable = enable;
296 
297 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
298 }
299 
300 union adjust_pixel_clock {
301 	ADJUST_DISPLAY_PLL_PS_ALLOCATION v1;
302 	ADJUST_DISPLAY_PLL_PS_ALLOCATION_V3 v3;
303 };
304 
305 static u32 amdgpu_atombios_crtc_adjust_pll(struct drm_crtc *crtc,
306 				    struct drm_display_mode *mode)
307 {
308 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
309 	struct drm_device *dev = crtc->dev;
310 	struct amdgpu_device *adev = drm_to_adev(dev);
311 	struct drm_encoder *encoder = amdgpu_crtc->encoder;
312 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
313 	struct drm_connector *connector = amdgpu_get_connector_for_encoder(encoder);
314 	u32 adjusted_clock = mode->clock;
315 	int encoder_mode = amdgpu_atombios_encoder_get_encoder_mode(encoder);
316 	u32 dp_clock = mode->clock;
317 	u32 clock = mode->clock;
318 	int bpc = amdgpu_crtc->bpc;
319 	bool is_duallink = amdgpu_dig_monitor_is_duallink(encoder, mode->clock);
320 	union adjust_pixel_clock args;
321 	u8 frev, crev;
322 	int index;
323 
324 	amdgpu_crtc->pll_flags = AMDGPU_PLL_USE_FRAC_FB_DIV;
325 
326 	if ((amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
327 	    (amdgpu_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) {
328 		if (connector) {
329 			struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
330 			struct amdgpu_connector_atom_dig *dig_connector =
331 				amdgpu_connector->con_priv;
332 
333 			dp_clock = dig_connector->dp_clock;
334 		}
335 	}
336 
337 	/* use recommended ref_div for ss */
338 	if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
339 		if (amdgpu_crtc->ss_enabled) {
340 			if (amdgpu_crtc->ss.refdiv) {
341 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_REF_DIV;
342 				amdgpu_crtc->pll_reference_div = amdgpu_crtc->ss.refdiv;
343 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_FRAC_FB_DIV;
344 			}
345 		}
346 	}
347 
348 	/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */
349 	if (amdgpu_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)
350 		adjusted_clock = mode->clock * 2;
351 	if (amdgpu_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
352 		amdgpu_crtc->pll_flags |= AMDGPU_PLL_PREFER_CLOSEST_LOWER;
353 	if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
354 		amdgpu_crtc->pll_flags |= AMDGPU_PLL_IS_LCD;
355 
356 
357 	/* adjust pll for deep color modes */
358 	if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
359 		switch (bpc) {
360 		case 8:
361 		default:
362 			break;
363 		case 10:
364 			clock = (clock * 5) / 4;
365 			break;
366 		case 12:
367 			clock = (clock * 3) / 2;
368 			break;
369 		case 16:
370 			clock = clock * 2;
371 			break;
372 		}
373 	}
374 
375 	/* DCE3+ has an AdjustDisplayPll that will adjust the pixel clock
376 	 * accordingly based on the encoder/transmitter to work around
377 	 * special hw requirements.
378 	 */
379 	index = GetIndexIntoMasterTable(COMMAND, AdjustDisplayPll);
380 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev,
381 				   &crev))
382 		return adjusted_clock;
383 
384 	memset(&args, 0, sizeof(args));
385 
386 	switch (frev) {
387 	case 1:
388 		switch (crev) {
389 		case 1:
390 		case 2:
391 			args.v1.usPixelClock = cpu_to_le16(clock / 10);
392 			args.v1.ucTransmitterID = amdgpu_encoder->encoder_id;
393 			args.v1.ucEncodeMode = encoder_mode;
394 			if (amdgpu_crtc->ss_enabled && amdgpu_crtc->ss.percentage)
395 				args.v1.ucConfig |=
396 					ADJUST_DISPLAY_CONFIG_SS_ENABLE;
397 
398 			amdgpu_atom_execute_table(adev->mode_info.atom_context,
399 					   index, (uint32_t *)&args);
400 			adjusted_clock = le16_to_cpu(args.v1.usPixelClock) * 10;
401 			break;
402 		case 3:
403 			args.v3.sInput.usPixelClock = cpu_to_le16(clock / 10);
404 			args.v3.sInput.ucTransmitterID = amdgpu_encoder->encoder_id;
405 			args.v3.sInput.ucEncodeMode = encoder_mode;
406 			args.v3.sInput.ucDispPllConfig = 0;
407 			if (amdgpu_crtc->ss_enabled && amdgpu_crtc->ss.percentage)
408 				args.v3.sInput.ucDispPllConfig |=
409 					DISPPLL_CONFIG_SS_ENABLE;
410 			if (ENCODER_MODE_IS_DP(encoder_mode)) {
411 				args.v3.sInput.ucDispPllConfig |=
412 					DISPPLL_CONFIG_COHERENT_MODE;
413 				/* 16200 or 27000 */
414 				args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
415 			} else if (amdgpu_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
416 				struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
417 				if (dig->coherent_mode)
418 					args.v3.sInput.ucDispPllConfig |=
419 						DISPPLL_CONFIG_COHERENT_MODE;
420 				if (is_duallink)
421 					args.v3.sInput.ucDispPllConfig |=
422 						DISPPLL_CONFIG_DUAL_LINK;
423 			}
424 			if (amdgpu_encoder_get_dp_bridge_encoder_id(encoder) !=
425 			    ENCODER_OBJECT_ID_NONE)
426 				args.v3.sInput.ucExtTransmitterID =
427 					amdgpu_encoder_get_dp_bridge_encoder_id(encoder);
428 			else
429 				args.v3.sInput.ucExtTransmitterID = 0;
430 
431 			amdgpu_atom_execute_table(adev->mode_info.atom_context,
432 					   index, (uint32_t *)&args);
433 			adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10;
434 			if (args.v3.sOutput.ucRefDiv) {
435 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_FRAC_FB_DIV;
436 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_REF_DIV;
437 				amdgpu_crtc->pll_reference_div = args.v3.sOutput.ucRefDiv;
438 			}
439 			if (args.v3.sOutput.ucPostDiv) {
440 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_FRAC_FB_DIV;
441 				amdgpu_crtc->pll_flags |= AMDGPU_PLL_USE_POST_DIV;
442 				amdgpu_crtc->pll_post_div = args.v3.sOutput.ucPostDiv;
443 			}
444 			break;
445 		default:
446 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
447 			return adjusted_clock;
448 		}
449 		break;
450 	default:
451 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
452 		return adjusted_clock;
453 	}
454 
455 	return adjusted_clock;
456 }
457 
458 union set_pixel_clock {
459 	SET_PIXEL_CLOCK_PS_ALLOCATION base;
460 	PIXEL_CLOCK_PARAMETERS v1;
461 	PIXEL_CLOCK_PARAMETERS_V2 v2;
462 	PIXEL_CLOCK_PARAMETERS_V3 v3;
463 	PIXEL_CLOCK_PARAMETERS_V5 v5;
464 	PIXEL_CLOCK_PARAMETERS_V6 v6;
465 	PIXEL_CLOCK_PARAMETERS_V7 v7;
466 };
467 
468 /* on DCE5, make sure the voltage is high enough to support the
469  * required disp clk.
470  */
471 void amdgpu_atombios_crtc_set_disp_eng_pll(struct amdgpu_device *adev,
472 					   u32 dispclk)
473 {
474 	u8 frev, crev;
475 	int index;
476 	union set_pixel_clock args;
477 
478 	memset(&args, 0, sizeof(args));
479 
480 	index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
481 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev,
482 				   &crev))
483 		return;
484 
485 	switch (frev) {
486 	case 1:
487 		switch (crev) {
488 		case 5:
489 			/* if the default dcpll clock is specified,
490 			 * SetPixelClock provides the dividers
491 			 */
492 			args.v5.ucCRTC = ATOM_CRTC_INVALID;
493 			args.v5.usPixelClock = cpu_to_le16(dispclk);
494 			args.v5.ucPpll = ATOM_DCPLL;
495 			break;
496 		case 6:
497 			/* if the default dcpll clock is specified,
498 			 * SetPixelClock provides the dividers
499 			 */
500 			args.v6.ulDispEngClkFreq = cpu_to_le32(dispclk);
501 			if (adev->asic_type == CHIP_TAHITI ||
502 			    adev->asic_type == CHIP_PITCAIRN ||
503 			    adev->asic_type == CHIP_VERDE ||
504 			    adev->asic_type == CHIP_OLAND)
505 				args.v6.ucPpll = ATOM_PPLL0;
506 			else
507 				args.v6.ucPpll = ATOM_EXT_PLL1;
508 			break;
509 		default:
510 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
511 			return;
512 		}
513 		break;
514 	default:
515 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
516 		return;
517 	}
518 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
519 }
520 
521 union set_dce_clock {
522 	SET_DCE_CLOCK_PS_ALLOCATION_V1_1 v1_1;
523 	SET_DCE_CLOCK_PS_ALLOCATION_V2_1 v2_1;
524 };
525 
526 u32 amdgpu_atombios_crtc_set_dce_clock(struct amdgpu_device *adev,
527 				       u32 freq, u8 clk_type, u8 clk_src)
528 {
529 	u8 frev, crev;
530 	int index;
531 	union set_dce_clock args;
532 	u32 ret_freq = 0;
533 
534 	memset(&args, 0, sizeof(args));
535 
536 	index = GetIndexIntoMasterTable(COMMAND, SetDCEClock);
537 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev,
538 				   &crev))
539 		return 0;
540 
541 	switch (frev) {
542 	case 2:
543 		switch (crev) {
544 		case 1:
545 			args.v2_1.asParam.ulDCEClkFreq = cpu_to_le32(freq); /* 10kHz units */
546 			args.v2_1.asParam.ucDCEClkType = clk_type;
547 			args.v2_1.asParam.ucDCEClkSrc = clk_src;
548 			amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
549 			ret_freq = le32_to_cpu(args.v2_1.asParam.ulDCEClkFreq) * 10;
550 			break;
551 		default:
552 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
553 			return 0;
554 		}
555 		break;
556 	default:
557 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
558 		return 0;
559 	}
560 
561 	return ret_freq;
562 }
563 
564 static bool is_pixel_clock_source_from_pll(u32 encoder_mode, int pll_id)
565 {
566 	if (ENCODER_MODE_IS_DP(encoder_mode)) {
567 		if (pll_id < ATOM_EXT_PLL1)
568 			return true;
569 		else
570 			return false;
571 	} else {
572 		return true;
573 	}
574 }
575 
576 void amdgpu_atombios_crtc_program_pll(struct drm_crtc *crtc,
577 				      u32 crtc_id,
578 				      int pll_id,
579 				      u32 encoder_mode,
580 				      u32 encoder_id,
581 				      u32 clock,
582 				      u32 ref_div,
583 				      u32 fb_div,
584 				      u32 frac_fb_div,
585 				      u32 post_div,
586 				      int bpc,
587 				      bool ss_enabled,
588 				      struct amdgpu_atom_ss *ss)
589 {
590 	struct drm_device *dev = crtc->dev;
591 	struct amdgpu_device *adev = drm_to_adev(dev);
592 	u8 frev, crev;
593 	int index = GetIndexIntoMasterTable(COMMAND, SetPixelClock);
594 	union set_pixel_clock args;
595 
596 	memset(&args, 0, sizeof(args));
597 
598 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev,
599 				   &crev))
600 		return;
601 
602 	switch (frev) {
603 	case 1:
604 		switch (crev) {
605 		case 1:
606 			if (clock == ATOM_DISABLE)
607 				return;
608 			args.v1.usPixelClock = cpu_to_le16(clock / 10);
609 			args.v1.usRefDiv = cpu_to_le16(ref_div);
610 			args.v1.usFbDiv = cpu_to_le16(fb_div);
611 			args.v1.ucFracFbDiv = frac_fb_div;
612 			args.v1.ucPostDiv = post_div;
613 			args.v1.ucPpll = pll_id;
614 			args.v1.ucCRTC = crtc_id;
615 			args.v1.ucRefDivSrc = 1;
616 			break;
617 		case 2:
618 			args.v2.usPixelClock = cpu_to_le16(clock / 10);
619 			args.v2.usRefDiv = cpu_to_le16(ref_div);
620 			args.v2.usFbDiv = cpu_to_le16(fb_div);
621 			args.v2.ucFracFbDiv = frac_fb_div;
622 			args.v2.ucPostDiv = post_div;
623 			args.v2.ucPpll = pll_id;
624 			args.v2.ucCRTC = crtc_id;
625 			args.v2.ucRefDivSrc = 1;
626 			break;
627 		case 3:
628 			args.v3.usPixelClock = cpu_to_le16(clock / 10);
629 			args.v3.usRefDiv = cpu_to_le16(ref_div);
630 			args.v3.usFbDiv = cpu_to_le16(fb_div);
631 			args.v3.ucFracFbDiv = frac_fb_div;
632 			args.v3.ucPostDiv = post_div;
633 			args.v3.ucPpll = pll_id;
634 			if (crtc_id == ATOM_CRTC2)
635 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC2;
636 			else
637 				args.v3.ucMiscInfo = PIXEL_CLOCK_MISC_CRTC_SEL_CRTC1;
638 			if (ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK))
639 				args.v3.ucMiscInfo |= PIXEL_CLOCK_MISC_REF_DIV_SRC;
640 			args.v3.ucTransmitterId = encoder_id;
641 			args.v3.ucEncoderMode = encoder_mode;
642 			break;
643 		case 5:
644 			args.v5.ucCRTC = crtc_id;
645 			args.v5.usPixelClock = cpu_to_le16(clock / 10);
646 			args.v5.ucRefDiv = ref_div;
647 			args.v5.usFbDiv = cpu_to_le16(fb_div);
648 			args.v5.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
649 			args.v5.ucPostDiv = post_div;
650 			args.v5.ucMiscInfo = 0; /* HDMI depth, etc. */
651 			if ((ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK)) &&
652 			    (pll_id < ATOM_EXT_PLL1))
653 				args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_REF_DIV_SRC;
654 			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
655 				switch (bpc) {
656 				case 8:
657 				default:
658 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_24BPP;
659 					break;
660 				case 10:
661 					/* yes this is correct, the atom define is wrong */
662 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_32BPP;
663 					break;
664 				case 12:
665 					/* yes this is correct, the atom define is wrong */
666 					args.v5.ucMiscInfo |= PIXEL_CLOCK_V5_MISC_HDMI_30BPP;
667 					break;
668 				}
669 			}
670 			args.v5.ucTransmitterID = encoder_id;
671 			args.v5.ucEncoderMode = encoder_mode;
672 			args.v5.ucPpll = pll_id;
673 			break;
674 		case 6:
675 			args.v6.ulDispEngClkFreq = cpu_to_le32(crtc_id << 24 | clock / 10);
676 			args.v6.ucRefDiv = ref_div;
677 			args.v6.usFbDiv = cpu_to_le16(fb_div);
678 			args.v6.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
679 			args.v6.ucPostDiv = post_div;
680 			args.v6.ucMiscInfo = 0; /* HDMI depth, etc. */
681 			if ((ss_enabled && (ss->type & ATOM_EXTERNAL_SS_MASK)) &&
682 			    (pll_id < ATOM_EXT_PLL1) &&
683 			    !is_pixel_clock_source_from_pll(encoder_mode, pll_id))
684 				args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_REF_DIV_SRC;
685 			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
686 				switch (bpc) {
687 				case 8:
688 				default:
689 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_24BPP;
690 					break;
691 				case 10:
692 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_30BPP_V6;
693 					break;
694 				case 12:
695 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_36BPP_V6;
696 					break;
697 				case 16:
698 					args.v6.ucMiscInfo |= PIXEL_CLOCK_V6_MISC_HDMI_48BPP;
699 					break;
700 				}
701 			}
702 			args.v6.ucTransmitterID = encoder_id;
703 			args.v6.ucEncoderMode = encoder_mode;
704 			args.v6.ucPpll = pll_id;
705 			break;
706 		case 7:
707 			args.v7.ulPixelClock = cpu_to_le32(clock * 10); /* 100 hz units */
708 			args.v7.ucMiscInfo = 0;
709 			if ((encoder_mode == ATOM_ENCODER_MODE_DVI) &&
710 			    (clock > 165000))
711 				args.v7.ucMiscInfo |= PIXEL_CLOCK_V7_MISC_DVI_DUALLINK_EN;
712 			args.v7.ucCRTC = crtc_id;
713 			if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
714 				switch (bpc) {
715 				case 8:
716 				default:
717 					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_DIS;
718 					break;
719 				case 10:
720 					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_5_4;
721 					break;
722 				case 12:
723 					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_3_2;
724 					break;
725 				case 16:
726 					args.v7.ucDeepColorRatio = PIXEL_CLOCK_V7_DEEPCOLOR_RATIO_2_1;
727 					break;
728 				}
729 			}
730 			args.v7.ucTransmitterID = encoder_id;
731 			args.v7.ucEncoderMode = encoder_mode;
732 			args.v7.ucPpll = pll_id;
733 			break;
734 		default:
735 			DRM_ERROR("Unknown table version %d %d\n", frev, crev);
736 			return;
737 		}
738 		break;
739 	default:
740 		DRM_ERROR("Unknown table version %d %d\n", frev, crev);
741 		return;
742 	}
743 
744 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
745 }
746 
747 int amdgpu_atombios_crtc_prepare_pll(struct drm_crtc *crtc,
748 			      struct drm_display_mode *mode)
749 {
750 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
751 	struct drm_device *dev = crtc->dev;
752 	struct amdgpu_device *adev = drm_to_adev(dev);
753 	struct amdgpu_encoder *amdgpu_encoder =
754 		to_amdgpu_encoder(amdgpu_crtc->encoder);
755 	int encoder_mode = amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder);
756 
757 	amdgpu_crtc->bpc = 8;
758 	amdgpu_crtc->ss_enabled = false;
759 
760 	if ((amdgpu_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
761 	    (amdgpu_encoder_get_dp_bridge_encoder_id(amdgpu_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) {
762 		struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
763 		struct drm_connector *connector =
764 			amdgpu_get_connector_for_encoder(amdgpu_crtc->encoder);
765 		struct amdgpu_connector *amdgpu_connector =
766 			to_amdgpu_connector(connector);
767 		struct amdgpu_connector_atom_dig *dig_connector =
768 			amdgpu_connector->con_priv;
769 		int dp_clock;
770 
771 		/* Assign mode clock for hdmi deep color max clock limit check */
772 		amdgpu_connector->pixelclock_for_modeset = mode->clock;
773 		amdgpu_crtc->bpc = amdgpu_connector_get_monitor_bpc(connector);
774 
775 		switch (encoder_mode) {
776 		case ATOM_ENCODER_MODE_DP_MST:
777 		case ATOM_ENCODER_MODE_DP:
778 			/* DP/eDP */
779 			dp_clock = dig_connector->dp_clock / 10;
780 			amdgpu_crtc->ss_enabled =
781 				amdgpu_atombios_get_asic_ss_info(adev, &amdgpu_crtc->ss,
782 								 ASIC_INTERNAL_SS_ON_DP,
783 								 dp_clock);
784 			break;
785 		case ATOM_ENCODER_MODE_LVDS:
786 			amdgpu_crtc->ss_enabled =
787 				amdgpu_atombios_get_asic_ss_info(adev,
788 								 &amdgpu_crtc->ss,
789 								 dig->lcd_ss_id,
790 								 mode->clock / 10);
791 			break;
792 		case ATOM_ENCODER_MODE_DVI:
793 			amdgpu_crtc->ss_enabled =
794 				amdgpu_atombios_get_asic_ss_info(adev,
795 								 &amdgpu_crtc->ss,
796 								 ASIC_INTERNAL_SS_ON_TMDS,
797 								 mode->clock / 10);
798 			break;
799 		case ATOM_ENCODER_MODE_HDMI:
800 			amdgpu_crtc->ss_enabled =
801 				amdgpu_atombios_get_asic_ss_info(adev,
802 								 &amdgpu_crtc->ss,
803 								 ASIC_INTERNAL_SS_ON_HDMI,
804 								 mode->clock / 10);
805 			break;
806 		default:
807 			break;
808 		}
809 	}
810 
811 	/* adjust pixel clock as needed */
812 	amdgpu_crtc->adjusted_clock = amdgpu_atombios_crtc_adjust_pll(crtc, mode);
813 
814 	return 0;
815 }
816 
817 void amdgpu_atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
818 {
819 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
820 	struct drm_device *dev = crtc->dev;
821 	struct amdgpu_device *adev = drm_to_adev(dev);
822 	struct amdgpu_encoder *amdgpu_encoder =
823 		to_amdgpu_encoder(amdgpu_crtc->encoder);
824 	u32 pll_clock = mode->clock;
825 	u32 clock = mode->clock;
826 	u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0;
827 	struct amdgpu_pll *pll;
828 	int encoder_mode = amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder);
829 
830 	/* pass the actual clock to amdgpu_atombios_crtc_program_pll for HDMI */
831 	if ((encoder_mode == ATOM_ENCODER_MODE_HDMI) &&
832 	    (amdgpu_crtc->bpc > 8))
833 		clock = amdgpu_crtc->adjusted_clock;
834 
835 	switch (amdgpu_crtc->pll_id) {
836 	case ATOM_PPLL1:
837 		pll = &adev->clock.ppll[0];
838 		break;
839 	case ATOM_PPLL2:
840 		pll = &adev->clock.ppll[1];
841 		break;
842 	case ATOM_PPLL0:
843 	case ATOM_PPLL_INVALID:
844 	default:
845 		pll = &adev->clock.ppll[2];
846 		break;
847 	}
848 
849 	/* update pll params */
850 	pll->flags = amdgpu_crtc->pll_flags;
851 	pll->reference_div = amdgpu_crtc->pll_reference_div;
852 	pll->post_div = amdgpu_crtc->pll_post_div;
853 
854 	amdgpu_pll_compute(pll, amdgpu_crtc->adjusted_clock, &pll_clock,
855 			    &fb_div, &frac_fb_div, &ref_div, &post_div);
856 
857 	amdgpu_atombios_crtc_program_ss(adev, ATOM_DISABLE, amdgpu_crtc->pll_id,
858 				 amdgpu_crtc->crtc_id, &amdgpu_crtc->ss);
859 
860 	amdgpu_atombios_crtc_program_pll(crtc, amdgpu_crtc->crtc_id, amdgpu_crtc->pll_id,
861 				  encoder_mode, amdgpu_encoder->encoder_id, clock,
862 				  ref_div, fb_div, frac_fb_div, post_div,
863 				  amdgpu_crtc->bpc, amdgpu_crtc->ss_enabled, &amdgpu_crtc->ss);
864 
865 	if (amdgpu_crtc->ss_enabled) {
866 		/* calculate ss amount and step size */
867 		u32 step_size;
868 		u32 amount = (((fb_div * 10) + frac_fb_div) *
869 			      (u32)amdgpu_crtc->ss.percentage) /
870 			(100 * (u32)amdgpu_crtc->ss.percentage_divider);
871 		amdgpu_crtc->ss.amount = (amount / 10) & ATOM_PPLL_SS_AMOUNT_V2_FBDIV_MASK;
872 		amdgpu_crtc->ss.amount |= ((amount - (amount / 10)) << ATOM_PPLL_SS_AMOUNT_V2_NFRAC_SHIFT) &
873 			ATOM_PPLL_SS_AMOUNT_V2_NFRAC_MASK;
874 		if (amdgpu_crtc->ss.type & ATOM_PPLL_SS_TYPE_V2_CENTRE_SPREAD)
875 			step_size = (4 * amount * ref_div * ((u32)amdgpu_crtc->ss.rate * 2048)) /
876 				(125 * 25 * pll->reference_freq / 100);
877 		else
878 			step_size = (2 * amount * ref_div * ((u32)amdgpu_crtc->ss.rate * 2048)) /
879 				(125 * 25 * pll->reference_freq / 100);
880 		amdgpu_crtc->ss.step = step_size;
881 
882 		amdgpu_atombios_crtc_program_ss(adev, ATOM_ENABLE, amdgpu_crtc->pll_id,
883 					 amdgpu_crtc->crtc_id, &amdgpu_crtc->ss);
884 	}
885 }
886 
887