1 /*
2  * Copyright © 2018 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21  * DEALINGS IN THE SOFTWARE.
22  *
23  * Authors:
24  *   Madhav Chauhan <madhav.chauhan@intel.com>
25  *   Jani Nikula <jani.nikula@intel.com>
26  */
27 
28 #include <drm/display/drm_dsc_helper.h>
29 #include <drm/drm_atomic_helper.h>
30 #include <drm/drm_mipi_dsi.h>
31 
32 #include "icl_dsi.h"
33 #include "icl_dsi_regs.h"
34 #include "intel_atomic.h"
35 #include "intel_backlight.h"
36 #include "intel_combo_phy.h"
37 #include "intel_combo_phy_regs.h"
38 #include "intel_connector.h"
39 #include "intel_crtc.h"
40 #include "intel_ddi.h"
41 #include "intel_de.h"
42 #include "intel_dsi.h"
43 #include "intel_dsi_vbt.h"
44 #include "intel_panel.h"
45 #include "intel_vdsc.h"
46 #include "skl_scaler.h"
47 #include "skl_universal_plane.h"
48 
49 static int header_credits_available(struct drm_i915_private *dev_priv,
50 				    enum transcoder dsi_trans)
51 {
52 	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK)
53 		>> FREE_HEADER_CREDIT_SHIFT;
54 }
55 
56 static int payload_credits_available(struct drm_i915_private *dev_priv,
57 				     enum transcoder dsi_trans)
58 {
59 	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK)
60 		>> FREE_PLOAD_CREDIT_SHIFT;
61 }
62 
63 static bool wait_for_header_credits(struct drm_i915_private *dev_priv,
64 				    enum transcoder dsi_trans, int hdr_credit)
65 {
66 	if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >=
67 			hdr_credit, 100)) {
68 		drm_err(&dev_priv->drm, "DSI header credits not released\n");
69 		return false;
70 	}
71 
72 	return true;
73 }
74 
75 static bool wait_for_payload_credits(struct drm_i915_private *dev_priv,
76 				     enum transcoder dsi_trans, int payld_credit)
77 {
78 	if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >=
79 			payld_credit, 100)) {
80 		drm_err(&dev_priv->drm, "DSI payload credits not released\n");
81 		return false;
82 	}
83 
84 	return true;
85 }
86 
87 static enum transcoder dsi_port_to_transcoder(enum port port)
88 {
89 	if (port == PORT_A)
90 		return TRANSCODER_DSI_0;
91 	else
92 		return TRANSCODER_DSI_1;
93 }
94 
95 static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder)
96 {
97 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
98 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
99 	struct mipi_dsi_device *dsi;
100 	enum port port;
101 	enum transcoder dsi_trans;
102 	int ret;
103 
104 	/* wait for header/payload credits to be released */
105 	for_each_dsi_port(port, intel_dsi->ports) {
106 		dsi_trans = dsi_port_to_transcoder(port);
107 		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
108 		wait_for_payload_credits(dev_priv, dsi_trans, MAX_PLOAD_CREDIT);
109 	}
110 
111 	/* send nop DCS command */
112 	for_each_dsi_port(port, intel_dsi->ports) {
113 		dsi = intel_dsi->dsi_hosts[port]->device;
114 		dsi->mode_flags |= MIPI_DSI_MODE_LPM;
115 		dsi->channel = 0;
116 		ret = mipi_dsi_dcs_nop(dsi);
117 		if (ret < 0)
118 			drm_err(&dev_priv->drm,
119 				"error sending DCS NOP command\n");
120 	}
121 
122 	/* wait for header credits to be released */
123 	for_each_dsi_port(port, intel_dsi->ports) {
124 		dsi_trans = dsi_port_to_transcoder(port);
125 		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
126 	}
127 
128 	/* wait for LP TX in progress bit to be cleared */
129 	for_each_dsi_port(port, intel_dsi->ports) {
130 		dsi_trans = dsi_port_to_transcoder(port);
131 		if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
132 				  LPTX_IN_PROGRESS), 20))
133 			drm_err(&dev_priv->drm, "LPTX bit not cleared\n");
134 	}
135 }
136 
137 static int dsi_send_pkt_payld(struct intel_dsi_host *host,
138 			      const struct mipi_dsi_packet *packet)
139 {
140 	struct intel_dsi *intel_dsi = host->intel_dsi;
141 	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
142 	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
143 	const u8 *data = packet->payload;
144 	u32 len = packet->payload_length;
145 	int i, j;
146 
147 	/* payload queue can accept *256 bytes*, check limit */
148 	if (len > MAX_PLOAD_CREDIT * 4) {
149 		drm_err(&i915->drm, "payload size exceeds max queue limit\n");
150 		return -EINVAL;
151 	}
152 
153 	for (i = 0; i < len; i += 4) {
154 		u32 tmp = 0;
155 
156 		if (!wait_for_payload_credits(i915, dsi_trans, 1))
157 			return -EBUSY;
158 
159 		for (j = 0; j < min_t(u32, len - i, 4); j++)
160 			tmp |= *data++ << 8 * j;
161 
162 		intel_de_write(i915, DSI_CMD_TXPYLD(dsi_trans), tmp);
163 	}
164 
165 	return 0;
166 }
167 
168 static int dsi_send_pkt_hdr(struct intel_dsi_host *host,
169 			    const struct mipi_dsi_packet *packet,
170 			    bool enable_lpdt)
171 {
172 	struct intel_dsi *intel_dsi = host->intel_dsi;
173 	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
174 	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
175 	u32 tmp;
176 
177 	if (!wait_for_header_credits(dev_priv, dsi_trans, 1))
178 		return -EBUSY;
179 
180 	tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans));
181 
182 	if (packet->payload)
183 		tmp |= PAYLOAD_PRESENT;
184 	else
185 		tmp &= ~PAYLOAD_PRESENT;
186 
187 	tmp &= ~VBLANK_FENCE;
188 
189 	if (enable_lpdt)
190 		tmp |= LP_DATA_TRANSFER;
191 	else
192 		tmp &= ~LP_DATA_TRANSFER;
193 
194 	tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK);
195 	tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT);
196 	tmp |= ((packet->header[0] & DT_MASK) << DT_SHIFT);
197 	tmp |= (packet->header[1] << PARAM_WC_LOWER_SHIFT);
198 	tmp |= (packet->header[2] << PARAM_WC_UPPER_SHIFT);
199 	intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp);
200 
201 	return 0;
202 }
203 
204 void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
205 {
206 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
207 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
208 	u32 tmp, mode_flags;
209 	enum port port;
210 
211 	mode_flags = crtc_state->mode_flags;
212 
213 	/*
214 	 * case 1 also covers dual link
215 	 * In case of dual link, frame update should be set on
216 	 * DSI_0
217 	 */
218 	if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0)
219 		port = PORT_A;
220 	else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1)
221 		port = PORT_B;
222 	else
223 		return;
224 
225 	tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
226 	tmp |= DSI_FRAME_UPDATE_REQUEST;
227 	intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
228 }
229 
230 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
231 {
232 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
233 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
234 	enum phy phy;
235 	u32 tmp;
236 	int lane;
237 
238 	for_each_dsi_phy(phy, intel_dsi->phys) {
239 		/*
240 		 * Program voltage swing and pre-emphasis level values as per
241 		 * table in BSPEC under DDI buffer programing
242 		 */
243 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
244 		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
245 		tmp |= SCALING_MODE_SEL(0x2);
246 		tmp |= TAP2_DISABLE | TAP3_DISABLE;
247 		tmp |= RTERM_SELECT(0x6);
248 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
249 
250 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
251 		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
252 		tmp |= SCALING_MODE_SEL(0x2);
253 		tmp |= TAP2_DISABLE | TAP3_DISABLE;
254 		tmp |= RTERM_SELECT(0x6);
255 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
256 
257 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
258 		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
259 			 RCOMP_SCALAR_MASK);
260 		tmp |= SWING_SEL_UPPER(0x2);
261 		tmp |= SWING_SEL_LOWER(0x2);
262 		tmp |= RCOMP_SCALAR(0x98);
263 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
264 
265 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
266 		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
267 			 RCOMP_SCALAR_MASK);
268 		tmp |= SWING_SEL_UPPER(0x2);
269 		tmp |= SWING_SEL_LOWER(0x2);
270 		tmp |= RCOMP_SCALAR(0x98);
271 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
272 
273 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
274 		tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
275 			 CURSOR_COEFF_MASK);
276 		tmp |= POST_CURSOR_1(0x0);
277 		tmp |= POST_CURSOR_2(0x0);
278 		tmp |= CURSOR_COEFF(0x3f);
279 		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
280 
281 		for (lane = 0; lane <= 3; lane++) {
282 			/* Bspec: must not use GRP register for write */
283 			tmp = intel_de_read(dev_priv,
284 					    ICL_PORT_TX_DW4_LN(lane, phy));
285 			tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
286 				 CURSOR_COEFF_MASK);
287 			tmp |= POST_CURSOR_1(0x0);
288 			tmp |= POST_CURSOR_2(0x0);
289 			tmp |= CURSOR_COEFF(0x3f);
290 			intel_de_write(dev_priv,
291 				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
292 		}
293 	}
294 }
295 
296 static void configure_dual_link_mode(struct intel_encoder *encoder,
297 				     const struct intel_crtc_state *pipe_config)
298 {
299 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
300 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
301 	u32 dss_ctl1;
302 
303 	dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1);
304 	dss_ctl1 |= SPLITTER_ENABLE;
305 	dss_ctl1 &= ~OVERLAP_PIXELS_MASK;
306 	dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap);
307 
308 	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
309 		const struct drm_display_mode *adjusted_mode =
310 					&pipe_config->hw.adjusted_mode;
311 		u32 dss_ctl2;
312 		u16 hactive = adjusted_mode->crtc_hdisplay;
313 		u16 dl_buffer_depth;
314 
315 		dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE;
316 		dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap;
317 
318 		if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH)
319 			drm_err(&dev_priv->drm,
320 				"DL buffer depth exceed max value\n");
321 
322 		dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK;
323 		dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
324 		dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2);
325 		dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK;
326 		dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
327 		intel_de_write(dev_priv, DSS_CTL2, dss_ctl2);
328 	} else {
329 		/* Interleave */
330 		dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE;
331 	}
332 
333 	intel_de_write(dev_priv, DSS_CTL1, dss_ctl1);
334 }
335 
336 /* aka DSI 8X clock */
337 static int afe_clk(struct intel_encoder *encoder,
338 		   const struct intel_crtc_state *crtc_state)
339 {
340 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
341 	int bpp;
342 
343 	if (crtc_state->dsc.compression_enable)
344 		bpp = crtc_state->dsc.compressed_bpp;
345 	else
346 		bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
347 
348 	return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count);
349 }
350 
351 static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder,
352 					  const struct intel_crtc_state *crtc_state)
353 {
354 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
355 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
356 	enum port port;
357 	int afe_clk_khz;
358 	int theo_word_clk, act_word_clk;
359 	u32 esc_clk_div_m, esc_clk_div_m_phy;
360 
361 	afe_clk_khz = afe_clk(encoder, crtc_state);
362 
363 	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
364 		theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK);
365 		act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2);
366 		esc_clk_div_m = act_word_clk * 8;
367 		esc_clk_div_m_phy = (act_word_clk - 1) / 2;
368 	} else {
369 		esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK);
370 	}
371 
372 	for_each_dsi_port(port, intel_dsi->ports) {
373 		intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port),
374 			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
375 		intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port));
376 	}
377 
378 	for_each_dsi_port(port, intel_dsi->ports) {
379 		intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port),
380 			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
381 		intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port));
382 	}
383 
384 	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
385 		for_each_dsi_port(port, intel_dsi->ports) {
386 			intel_de_write(dev_priv, ADL_MIPIO_DW(port, 8),
387 				       esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY);
388 			intel_de_posting_read(dev_priv, ADL_MIPIO_DW(port, 8));
389 		}
390 	}
391 }
392 
393 static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv,
394 				     struct intel_dsi *intel_dsi)
395 {
396 	enum port port;
397 
398 	for_each_dsi_port(port, intel_dsi->ports) {
399 		drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]);
400 		intel_dsi->io_wakeref[port] =
401 			intel_display_power_get(dev_priv,
402 						port == PORT_A ?
403 						POWER_DOMAIN_PORT_DDI_IO_A :
404 						POWER_DOMAIN_PORT_DDI_IO_B);
405 	}
406 }
407 
408 static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
409 {
410 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
411 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
412 	enum port port;
413 	u32 tmp;
414 
415 	for_each_dsi_port(port, intel_dsi->ports) {
416 		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
417 		tmp |= COMBO_PHY_MODE_DSI;
418 		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
419 	}
420 
421 	get_dsi_io_power_domains(dev_priv, intel_dsi);
422 }
423 
424 static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder)
425 {
426 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
427 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
428 	enum phy phy;
429 
430 	for_each_dsi_phy(phy, intel_dsi->phys)
431 		intel_combo_phy_power_up_lanes(dev_priv, phy, true,
432 					       intel_dsi->lane_count, false);
433 }
434 
435 static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
436 {
437 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
438 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
439 	enum phy phy;
440 	u32 tmp;
441 	int lane;
442 
443 	/* Step 4b(i) set loadgen select for transmit and aux lanes */
444 	for_each_dsi_phy(phy, intel_dsi->phys) {
445 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
446 		tmp &= ~LOADGEN_SELECT;
447 		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
448 		for (lane = 0; lane <= 3; lane++) {
449 			tmp = intel_de_read(dev_priv,
450 					    ICL_PORT_TX_DW4_LN(lane, phy));
451 			tmp &= ~LOADGEN_SELECT;
452 			if (lane != 2)
453 				tmp |= LOADGEN_SELECT;
454 			intel_de_write(dev_priv,
455 				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
456 		}
457 	}
458 
459 	/* Step 4b(ii) set latency optimization for transmit and aux lanes */
460 	for_each_dsi_phy(phy, intel_dsi->phys) {
461 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
462 		tmp &= ~FRC_LATENCY_OPTIM_MASK;
463 		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
464 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
465 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
466 		tmp &= ~FRC_LATENCY_OPTIM_MASK;
467 		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
468 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
469 
470 		/* For EHL, TGL, set latency optimization for PCS_DW1 lanes */
471 		if (IS_JSL_EHL(dev_priv) || (DISPLAY_VER(dev_priv) >= 12)) {
472 			tmp = intel_de_read(dev_priv,
473 					    ICL_PORT_PCS_DW1_AUX(phy));
474 			tmp &= ~LATENCY_OPTIM_MASK;
475 			tmp |= LATENCY_OPTIM_VAL(0);
476 			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
477 				       tmp);
478 
479 			tmp = intel_de_read(dev_priv,
480 					    ICL_PORT_PCS_DW1_LN(0, phy));
481 			tmp &= ~LATENCY_OPTIM_MASK;
482 			tmp |= LATENCY_OPTIM_VAL(0x1);
483 			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy),
484 				       tmp);
485 		}
486 	}
487 
488 }
489 
490 static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
491 {
492 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
493 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
494 	u32 tmp;
495 	enum phy phy;
496 
497 	/* clear common keeper enable bit */
498 	for_each_dsi_phy(phy, intel_dsi->phys) {
499 		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
500 		tmp &= ~COMMON_KEEPER_EN;
501 		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp);
502 		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy));
503 		tmp &= ~COMMON_KEEPER_EN;
504 		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp);
505 	}
506 
507 	/*
508 	 * Set SUS Clock Config bitfield to 11b
509 	 * Note: loadgen select program is done
510 	 * as part of lane phy sequence configuration
511 	 */
512 	for_each_dsi_phy(phy, intel_dsi->phys) {
513 		tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
514 		tmp |= SUS_CLOCK_CONFIG;
515 		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp);
516 	}
517 
518 	/* Clear training enable to change swing values */
519 	for_each_dsi_phy(phy, intel_dsi->phys) {
520 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
521 		tmp &= ~TX_TRAINING_EN;
522 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
523 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
524 		tmp &= ~TX_TRAINING_EN;
525 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
526 	}
527 
528 	/* Program swing and de-emphasis */
529 	dsi_program_swing_and_deemphasis(encoder);
530 
531 	/* Set training enable to trigger update */
532 	for_each_dsi_phy(phy, intel_dsi->phys) {
533 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
534 		tmp |= TX_TRAINING_EN;
535 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
536 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
537 		tmp |= TX_TRAINING_EN;
538 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
539 	}
540 }
541 
542 static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder)
543 {
544 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
545 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
546 	u32 tmp;
547 	enum port port;
548 
549 	for_each_dsi_port(port, intel_dsi->ports) {
550 		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
551 		tmp |= DDI_BUF_CTL_ENABLE;
552 		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
553 
554 		if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
555 				  DDI_BUF_IS_IDLE),
556 				  500))
557 			drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n",
558 				port_name(port));
559 	}
560 }
561 
562 static void
563 gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
564 			     const struct intel_crtc_state *crtc_state)
565 {
566 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
567 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
568 	u32 tmp;
569 	enum port port;
570 	enum phy phy;
571 
572 	/* Program T-INIT master registers */
573 	for_each_dsi_port(port, intel_dsi->ports) {
574 		tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port));
575 		tmp &= ~DSI_T_INIT_MASTER_MASK;
576 		tmp |= intel_dsi->init_count;
577 		intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp);
578 	}
579 
580 	/* Program DPHY clock lanes timings */
581 	for_each_dsi_port(port, intel_dsi->ports) {
582 		intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port),
583 			       intel_dsi->dphy_reg);
584 
585 		/* shadow register inside display core */
586 		intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port),
587 			       intel_dsi->dphy_reg);
588 	}
589 
590 	/* Program DPHY data lanes timings */
591 	for_each_dsi_port(port, intel_dsi->ports) {
592 		intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port),
593 			       intel_dsi->dphy_data_lane_reg);
594 
595 		/* shadow register inside display core */
596 		intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port),
597 			       intel_dsi->dphy_data_lane_reg);
598 	}
599 
600 	/*
601 	 * If DSI link operating at or below an 800 MHz,
602 	 * TA_SURE should be override and programmed to
603 	 * a value '0' inside TA_PARAM_REGISTERS otherwise
604 	 * leave all fields at HW default values.
605 	 */
606 	if (DISPLAY_VER(dev_priv) == 11) {
607 		if (afe_clk(encoder, crtc_state) <= 800000) {
608 			for_each_dsi_port(port, intel_dsi->ports) {
609 				tmp = intel_de_read(dev_priv,
610 						    DPHY_TA_TIMING_PARAM(port));
611 				tmp &= ~TA_SURE_MASK;
612 				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
613 				intel_de_write(dev_priv,
614 					       DPHY_TA_TIMING_PARAM(port),
615 					       tmp);
616 
617 				/* shadow register inside display core */
618 				tmp = intel_de_read(dev_priv,
619 						    DSI_TA_TIMING_PARAM(port));
620 				tmp &= ~TA_SURE_MASK;
621 				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
622 				intel_de_write(dev_priv,
623 					       DSI_TA_TIMING_PARAM(port), tmp);
624 			}
625 		}
626 	}
627 
628 	if (IS_JSL_EHL(dev_priv)) {
629 		for_each_dsi_phy(phy, intel_dsi->phys) {
630 			tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy));
631 			tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP;
632 			intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp);
633 		}
634 	}
635 }
636 
637 static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
638 {
639 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
640 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
641 	u32 tmp;
642 	enum phy phy;
643 
644 	mutex_lock(&dev_priv->dpll.lock);
645 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
646 	for_each_dsi_phy(phy, intel_dsi->phys)
647 		tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
648 
649 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
650 	mutex_unlock(&dev_priv->dpll.lock);
651 }
652 
653 static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
654 {
655 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
656 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
657 	u32 tmp;
658 	enum phy phy;
659 
660 	mutex_lock(&dev_priv->dpll.lock);
661 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
662 	for_each_dsi_phy(phy, intel_dsi->phys)
663 		tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
664 
665 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
666 	mutex_unlock(&dev_priv->dpll.lock);
667 }
668 
669 static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder)
670 {
671 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
672 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
673 	bool clock_enabled = false;
674 	enum phy phy;
675 	u32 tmp;
676 
677 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
678 
679 	for_each_dsi_phy(phy, intel_dsi->phys) {
680 		if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)))
681 			clock_enabled = true;
682 	}
683 
684 	return clock_enabled;
685 }
686 
687 static void gen11_dsi_map_pll(struct intel_encoder *encoder,
688 			      const struct intel_crtc_state *crtc_state)
689 {
690 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
691 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
692 	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
693 	enum phy phy;
694 	u32 val;
695 
696 	mutex_lock(&dev_priv->dpll.lock);
697 
698 	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
699 	for_each_dsi_phy(phy, intel_dsi->phys) {
700 		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
701 		val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
702 	}
703 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
704 
705 	for_each_dsi_phy(phy, intel_dsi->phys) {
706 		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
707 	}
708 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
709 
710 	intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0);
711 
712 	mutex_unlock(&dev_priv->dpll.lock);
713 }
714 
715 static void
716 gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
717 			       const struct intel_crtc_state *pipe_config)
718 {
719 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
720 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
721 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
722 	enum pipe pipe = crtc->pipe;
723 	u32 tmp;
724 	enum port port;
725 	enum transcoder dsi_trans;
726 
727 	for_each_dsi_port(port, intel_dsi->ports) {
728 		dsi_trans = dsi_port_to_transcoder(port);
729 		tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
730 
731 		if (intel_dsi->eotp_pkt)
732 			tmp &= ~EOTP_DISABLED;
733 		else
734 			tmp |= EOTP_DISABLED;
735 
736 		/* enable link calibration if freq > 1.5Gbps */
737 		if (afe_clk(encoder, pipe_config) >= 1500 * 1000) {
738 			tmp &= ~LINK_CALIBRATION_MASK;
739 			tmp |= CALIBRATION_ENABLED_INITIAL_ONLY;
740 		}
741 
742 		/* configure continuous clock */
743 		tmp &= ~CONTINUOUS_CLK_MASK;
744 		if (intel_dsi->clock_stop)
745 			tmp |= CLK_ENTER_LP_AFTER_DATA;
746 		else
747 			tmp |= CLK_HS_CONTINUOUS;
748 
749 		/* configure buffer threshold limit to minimum */
750 		tmp &= ~PIX_BUF_THRESHOLD_MASK;
751 		tmp |= PIX_BUF_THRESHOLD_1_4;
752 
753 		/* set virtual channel to '0' */
754 		tmp &= ~PIX_VIRT_CHAN_MASK;
755 		tmp |= PIX_VIRT_CHAN(0);
756 
757 		/* program BGR transmission */
758 		if (intel_dsi->bgr_enabled)
759 			tmp |= BGR_TRANSMISSION;
760 
761 		/* select pixel format */
762 		tmp &= ~PIX_FMT_MASK;
763 		if (pipe_config->dsc.compression_enable) {
764 			tmp |= PIX_FMT_COMPRESSED;
765 		} else {
766 			switch (intel_dsi->pixel_format) {
767 			default:
768 				MISSING_CASE(intel_dsi->pixel_format);
769 				fallthrough;
770 			case MIPI_DSI_FMT_RGB565:
771 				tmp |= PIX_FMT_RGB565;
772 				break;
773 			case MIPI_DSI_FMT_RGB666_PACKED:
774 				tmp |= PIX_FMT_RGB666_PACKED;
775 				break;
776 			case MIPI_DSI_FMT_RGB666:
777 				tmp |= PIX_FMT_RGB666_LOOSE;
778 				break;
779 			case MIPI_DSI_FMT_RGB888:
780 				tmp |= PIX_FMT_RGB888;
781 				break;
782 			}
783 		}
784 
785 		if (DISPLAY_VER(dev_priv) >= 12) {
786 			if (is_vid_mode(intel_dsi))
787 				tmp |= BLANKING_PACKET_ENABLE;
788 		}
789 
790 		/* program DSI operation mode */
791 		if (is_vid_mode(intel_dsi)) {
792 			tmp &= ~OP_MODE_MASK;
793 			switch (intel_dsi->video_mode) {
794 			default:
795 				MISSING_CASE(intel_dsi->video_mode);
796 				fallthrough;
797 			case NON_BURST_SYNC_EVENTS:
798 				tmp |= VIDEO_MODE_SYNC_EVENT;
799 				break;
800 			case NON_BURST_SYNC_PULSE:
801 				tmp |= VIDEO_MODE_SYNC_PULSE;
802 				break;
803 			}
804 		} else {
805 			/*
806 			 * FIXME: Retrieve this info from VBT.
807 			 * As per the spec when dsi transcoder is operating
808 			 * in TE GATE mode, TE comes from GPIO
809 			 * which is UTIL PIN for DSI 0.
810 			 * Also this GPIO would not be used for other
811 			 * purposes is an assumption.
812 			 */
813 			tmp &= ~OP_MODE_MASK;
814 			tmp |= CMD_MODE_TE_GATE;
815 			tmp |= TE_SOURCE_GPIO;
816 		}
817 
818 		intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp);
819 	}
820 
821 	/* enable port sync mode if dual link */
822 	if (intel_dsi->dual_link) {
823 		for_each_dsi_port(port, intel_dsi->ports) {
824 			dsi_trans = dsi_port_to_transcoder(port);
825 			tmp = intel_de_read(dev_priv,
826 					    TRANS_DDI_FUNC_CTL2(dsi_trans));
827 			tmp |= PORT_SYNC_MODE_ENABLE;
828 			intel_de_write(dev_priv,
829 				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
830 		}
831 
832 		/* configure stream splitting */
833 		configure_dual_link_mode(encoder, pipe_config);
834 	}
835 
836 	for_each_dsi_port(port, intel_dsi->ports) {
837 		dsi_trans = dsi_port_to_transcoder(port);
838 
839 		/* select data lane width */
840 		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
841 		tmp &= ~DDI_PORT_WIDTH_MASK;
842 		tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count);
843 
844 		/* select input pipe */
845 		tmp &= ~TRANS_DDI_EDP_INPUT_MASK;
846 		switch (pipe) {
847 		default:
848 			MISSING_CASE(pipe);
849 			fallthrough;
850 		case PIPE_A:
851 			tmp |= TRANS_DDI_EDP_INPUT_A_ON;
852 			break;
853 		case PIPE_B:
854 			tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
855 			break;
856 		case PIPE_C:
857 			tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
858 			break;
859 		case PIPE_D:
860 			tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF;
861 			break;
862 		}
863 
864 		/* enable DDI buffer */
865 		tmp |= TRANS_DDI_FUNC_ENABLE;
866 		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
867 	}
868 
869 	/* wait for link ready */
870 	for_each_dsi_port(port, intel_dsi->ports) {
871 		dsi_trans = dsi_port_to_transcoder(port);
872 		if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) &
873 				 LINK_READY), 2500))
874 			drm_err(&dev_priv->drm, "DSI link not ready\n");
875 	}
876 }
877 
878 static void
879 gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder,
880 				 const struct intel_crtc_state *crtc_state)
881 {
882 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
883 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
884 	const struct drm_display_mode *adjusted_mode =
885 		&crtc_state->hw.adjusted_mode;
886 	enum port port;
887 	enum transcoder dsi_trans;
888 	/* horizontal timings */
889 	u16 htotal, hactive, hsync_start, hsync_end, hsync_size;
890 	u16 hback_porch;
891 	/* vertical timings */
892 	u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift;
893 	int mul = 1, div = 1;
894 
895 	/*
896 	 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account
897 	 * for slower link speed if DSC is enabled.
898 	 *
899 	 * The compression frequency ratio is the ratio between compressed and
900 	 * non-compressed link speeds, and simplifies down to the ratio between
901 	 * compressed and non-compressed bpp.
902 	 */
903 	if (crtc_state->dsc.compression_enable) {
904 		mul = crtc_state->dsc.compressed_bpp;
905 		div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
906 	}
907 
908 	hactive = adjusted_mode->crtc_hdisplay;
909 
910 	if (is_vid_mode(intel_dsi))
911 		htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
912 	else
913 		htotal = DIV_ROUND_UP((hactive + 160) * mul, div);
914 
915 	hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
916 	hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
917 	hsync_size  = hsync_end - hsync_start;
918 	hback_porch = (adjusted_mode->crtc_htotal -
919 		       adjusted_mode->crtc_hsync_end);
920 	vactive = adjusted_mode->crtc_vdisplay;
921 
922 	if (is_vid_mode(intel_dsi)) {
923 		vtotal = adjusted_mode->crtc_vtotal;
924 	} else {
925 		int bpp, line_time_us, byte_clk_period_ns;
926 
927 		if (crtc_state->dsc.compression_enable)
928 			bpp = crtc_state->dsc.compressed_bpp;
929 		else
930 			bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
931 
932 		byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state);
933 		line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count);
934 		vtotal = vactive + DIV_ROUND_UP(400, line_time_us);
935 	}
936 	vsync_start = adjusted_mode->crtc_vsync_start;
937 	vsync_end = adjusted_mode->crtc_vsync_end;
938 	vsync_shift = hsync_start - htotal / 2;
939 
940 	if (intel_dsi->dual_link) {
941 		hactive /= 2;
942 		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
943 			hactive += intel_dsi->pixel_overlap;
944 		htotal /= 2;
945 	}
946 
947 	/* minimum hactive as per bspec: 256 pixels */
948 	if (adjusted_mode->crtc_hdisplay < 256)
949 		drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n");
950 
951 	/* if RGB666 format, then hactive must be multiple of 4 pixels */
952 	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0)
953 		drm_err(&dev_priv->drm,
954 			"hactive pixels are not multiple of 4\n");
955 
956 	/* program TRANS_HTOTAL register */
957 	for_each_dsi_port(port, intel_dsi->ports) {
958 		dsi_trans = dsi_port_to_transcoder(port);
959 		intel_de_write(dev_priv, HTOTAL(dsi_trans),
960 			       (hactive - 1) | ((htotal - 1) << 16));
961 	}
962 
963 	/* TRANS_HSYNC register to be programmed only for video mode */
964 	if (is_vid_mode(intel_dsi)) {
965 		if (intel_dsi->video_mode == NON_BURST_SYNC_PULSE) {
966 			/* BSPEC: hsync size should be atleast 16 pixels */
967 			if (hsync_size < 16)
968 				drm_err(&dev_priv->drm,
969 					"hsync size < 16 pixels\n");
970 		}
971 
972 		if (hback_porch < 16)
973 			drm_err(&dev_priv->drm, "hback porch < 16 pixels\n");
974 
975 		if (intel_dsi->dual_link) {
976 			hsync_start /= 2;
977 			hsync_end /= 2;
978 		}
979 
980 		for_each_dsi_port(port, intel_dsi->ports) {
981 			dsi_trans = dsi_port_to_transcoder(port);
982 			intel_de_write(dev_priv, HSYNC(dsi_trans),
983 				       (hsync_start - 1) | ((hsync_end - 1) << 16));
984 		}
985 	}
986 
987 	/* program TRANS_VTOTAL register */
988 	for_each_dsi_port(port, intel_dsi->ports) {
989 		dsi_trans = dsi_port_to_transcoder(port);
990 		/*
991 		 * FIXME: Programing this by assuming progressive mode, since
992 		 * non-interlaced info from VBT is not saved inside
993 		 * struct drm_display_mode.
994 		 * For interlace mode: program required pixel minus 2
995 		 */
996 		intel_de_write(dev_priv, VTOTAL(dsi_trans),
997 			       (vactive - 1) | ((vtotal - 1) << 16));
998 	}
999 
1000 	if (vsync_end < vsync_start || vsync_end > vtotal)
1001 		drm_err(&dev_priv->drm, "Invalid vsync_end value\n");
1002 
1003 	if (vsync_start < vactive)
1004 		drm_err(&dev_priv->drm, "vsync_start less than vactive\n");
1005 
1006 	/* program TRANS_VSYNC register for video mode only */
1007 	if (is_vid_mode(intel_dsi)) {
1008 		for_each_dsi_port(port, intel_dsi->ports) {
1009 			dsi_trans = dsi_port_to_transcoder(port);
1010 			intel_de_write(dev_priv, VSYNC(dsi_trans),
1011 				       (vsync_start - 1) | ((vsync_end - 1) << 16));
1012 		}
1013 	}
1014 
1015 	/*
1016 	 * FIXME: It has to be programmed only for video modes and interlaced
1017 	 * modes. Put the check condition here once interlaced
1018 	 * info available as described above.
1019 	 * program TRANS_VSYNCSHIFT register
1020 	 */
1021 	if (is_vid_mode(intel_dsi)) {
1022 		for_each_dsi_port(port, intel_dsi->ports) {
1023 			dsi_trans = dsi_port_to_transcoder(port);
1024 			intel_de_write(dev_priv, VSYNCSHIFT(dsi_trans),
1025 				       vsync_shift);
1026 		}
1027 	}
1028 
1029 	/* program TRANS_VBLANK register, should be same as vtotal programmed */
1030 	if (DISPLAY_VER(dev_priv) >= 12) {
1031 		for_each_dsi_port(port, intel_dsi->ports) {
1032 			dsi_trans = dsi_port_to_transcoder(port);
1033 			intel_de_write(dev_priv, VBLANK(dsi_trans),
1034 				       (vactive - 1) | ((vtotal - 1) << 16));
1035 		}
1036 	}
1037 }
1038 
1039 static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder)
1040 {
1041 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1042 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1043 	enum port port;
1044 	enum transcoder dsi_trans;
1045 	u32 tmp;
1046 
1047 	for_each_dsi_port(port, intel_dsi->ports) {
1048 		dsi_trans = dsi_port_to_transcoder(port);
1049 		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1050 		tmp |= PIPECONF_ENABLE;
1051 		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
1052 
1053 		/* wait for transcoder to be enabled */
1054 		if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans),
1055 					  PIPECONF_STATE_ENABLE, 10))
1056 			drm_err(&dev_priv->drm,
1057 				"DSI transcoder not enabled\n");
1058 	}
1059 }
1060 
1061 static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
1062 				     const struct intel_crtc_state *crtc_state)
1063 {
1064 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1065 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1066 	enum port port;
1067 	enum transcoder dsi_trans;
1068 	u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
1069 
1070 	/*
1071 	 * escape clock count calculation:
1072 	 * BYTE_CLK_COUNT = TIME_NS/(8 * UI)
1073 	 * UI (nsec) = (10^6)/Bitrate
1074 	 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate
1075 	 * ESCAPE_CLK_COUNT  = TIME_NS/ESC_CLK_NS
1076 	 */
1077 	divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000;
1078 	mul = 8 * 1000000;
1079 	hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul,
1080 				     divisor);
1081 	lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor);
1082 	ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor);
1083 
1084 	for_each_dsi_port(port, intel_dsi->ports) {
1085 		dsi_trans = dsi_port_to_transcoder(port);
1086 
1087 		/* program hst_tx_timeout */
1088 		tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans));
1089 		tmp &= ~HSTX_TIMEOUT_VALUE_MASK;
1090 		tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout);
1091 		intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp);
1092 
1093 		/* FIXME: DSI_CALIB_TO */
1094 
1095 		/* program lp_rx_host timeout */
1096 		tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans));
1097 		tmp &= ~LPRX_TIMEOUT_VALUE_MASK;
1098 		tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout);
1099 		intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp);
1100 
1101 		/* FIXME: DSI_PWAIT_TO */
1102 
1103 		/* program turn around timeout */
1104 		tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans));
1105 		tmp &= ~TA_TIMEOUT_VALUE_MASK;
1106 		tmp |= TA_TIMEOUT_VALUE(ta_timeout);
1107 		intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp);
1108 	}
1109 }
1110 
1111 static void gen11_dsi_config_util_pin(struct intel_encoder *encoder,
1112 				      bool enable)
1113 {
1114 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1115 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1116 	u32 tmp;
1117 
1118 	/*
1119 	 * used as TE i/p for DSI0,
1120 	 * for dual link/DSI1 TE is from slave DSI1
1121 	 * through GPIO.
1122 	 */
1123 	if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B)))
1124 		return;
1125 
1126 	tmp = intel_de_read(dev_priv, UTIL_PIN_CTL);
1127 
1128 	if (enable) {
1129 		tmp |= UTIL_PIN_DIRECTION_INPUT;
1130 		tmp |= UTIL_PIN_ENABLE;
1131 	} else {
1132 		tmp &= ~UTIL_PIN_ENABLE;
1133 	}
1134 	intel_de_write(dev_priv, UTIL_PIN_CTL, tmp);
1135 }
1136 
1137 static void
1138 gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
1139 			      const struct intel_crtc_state *crtc_state)
1140 {
1141 	/* step 4a: power up all lanes of the DDI used by DSI */
1142 	gen11_dsi_power_up_lanes(encoder);
1143 
1144 	/* step 4b: configure lane sequencing of the Combo-PHY transmitters */
1145 	gen11_dsi_config_phy_lanes_sequence(encoder);
1146 
1147 	/* step 4c: configure voltage swing and skew */
1148 	gen11_dsi_voltage_swing_program_seq(encoder);
1149 
1150 	/* enable DDI buffer */
1151 	gen11_dsi_enable_ddi_buffer(encoder);
1152 
1153 	/* setup D-PHY timings */
1154 	gen11_dsi_setup_dphy_timings(encoder, crtc_state);
1155 
1156 	/* Since transcoder is configured to take events from GPIO */
1157 	gen11_dsi_config_util_pin(encoder, true);
1158 
1159 	/* step 4h: setup DSI protocol timeouts */
1160 	gen11_dsi_setup_timeouts(encoder, crtc_state);
1161 
1162 	/* Step (4h, 4i, 4j, 4k): Configure transcoder */
1163 	gen11_dsi_configure_transcoder(encoder, crtc_state);
1164 
1165 	/* Step 4l: Gate DDI clocks */
1166 	gen11_dsi_gate_clocks(encoder);
1167 }
1168 
1169 static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
1170 {
1171 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1172 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1173 	struct mipi_dsi_device *dsi;
1174 	enum port port;
1175 	enum transcoder dsi_trans;
1176 	u32 tmp;
1177 	int ret;
1178 
1179 	/* set maximum return packet size */
1180 	for_each_dsi_port(port, intel_dsi->ports) {
1181 		dsi_trans = dsi_port_to_transcoder(port);
1182 
1183 		/*
1184 		 * FIXME: This uses the number of DW's currently in the payload
1185 		 * receive queue. This is probably not what we want here.
1186 		 */
1187 		tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans));
1188 		tmp &= NUMBER_RX_PLOAD_DW_MASK;
1189 		/* multiply "Number Rx Payload DW" by 4 to get max value */
1190 		tmp = tmp * 4;
1191 		dsi = intel_dsi->dsi_hosts[port]->device;
1192 		ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp);
1193 		if (ret < 0)
1194 			drm_err(&dev_priv->drm,
1195 				"error setting max return pkt size%d\n", tmp);
1196 	}
1197 
1198 	/* panel power on related mipi dsi vbt sequences */
1199 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
1200 	intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay);
1201 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
1202 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
1203 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
1204 
1205 	/* ensure all panel commands dispatched before enabling transcoder */
1206 	wait_for_cmds_dispatched_to_panel(encoder);
1207 }
1208 
1209 static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state,
1210 				     struct intel_encoder *encoder,
1211 				     const struct intel_crtc_state *crtc_state,
1212 				     const struct drm_connector_state *conn_state)
1213 {
1214 	/* step2: enable IO power */
1215 	gen11_dsi_enable_io_power(encoder);
1216 
1217 	/* step3: enable DSI PLL */
1218 	gen11_dsi_program_esc_clk_div(encoder, crtc_state);
1219 }
1220 
1221 static void gen11_dsi_pre_enable(struct intel_atomic_state *state,
1222 				 struct intel_encoder *encoder,
1223 				 const struct intel_crtc_state *pipe_config,
1224 				 const struct drm_connector_state *conn_state)
1225 {
1226 	/* step3b */
1227 	gen11_dsi_map_pll(encoder, pipe_config);
1228 
1229 	/* step4: enable DSI port and DPHY */
1230 	gen11_dsi_enable_port_and_phy(encoder, pipe_config);
1231 
1232 	/* step5: program and powerup panel */
1233 	gen11_dsi_powerup_panel(encoder);
1234 
1235 	intel_dsc_dsi_pps_write(encoder, pipe_config);
1236 
1237 	/* step6c: configure transcoder timings */
1238 	gen11_dsi_set_transcoder_timings(encoder, pipe_config);
1239 }
1240 
1241 /*
1242  * Wa_1409054076:icl,jsl,ehl
1243  * When pipe A is disabled and MIPI DSI is enabled on pipe B,
1244  * the AMT KVMR feature will incorrectly see pipe A as enabled.
1245  * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave
1246  * it set while DSI is enabled on pipe B
1247  */
1248 static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder,
1249 				     enum pipe pipe, bool enable)
1250 {
1251 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1252 
1253 	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B)
1254 		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
1255 			     IGNORE_KVMR_PIPE_A,
1256 			     enable ? IGNORE_KVMR_PIPE_A : 0);
1257 }
1258 
1259 /*
1260  * Wa_16012360555:adl-p
1261  * SW will have to program the "LP to HS Wakeup Guardband"
1262  * to account for the repeaters on the HS Request/Ready
1263  * PPI signaling between the Display engine and the DPHY.
1264  */
1265 static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
1266 {
1267 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1268 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1269 	enum port port;
1270 
1271 	if (DISPLAY_VER(i915) == 13) {
1272 		for_each_dsi_port(port, intel_dsi->ports)
1273 			intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
1274 				     TGL_DSI_CHKN_LSHS_GB_MASK,
1275 				     TGL_DSI_CHKN_LSHS_GB(4));
1276 	}
1277 }
1278 
1279 static void gen11_dsi_enable(struct intel_atomic_state *state,
1280 			     struct intel_encoder *encoder,
1281 			     const struct intel_crtc_state *crtc_state,
1282 			     const struct drm_connector_state *conn_state)
1283 {
1284 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1285 	struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc);
1286 
1287 	drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
1288 
1289 	/* Wa_1409054076:icl,jsl,ehl */
1290 	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, true);
1291 
1292 	/* Wa_16012360555:adl-p */
1293 	adlp_set_lp_hs_wakeup_gb(encoder);
1294 
1295 	/* step6d: enable dsi transcoder */
1296 	gen11_dsi_enable_transcoder(encoder);
1297 
1298 	/* step7: enable backlight */
1299 	intel_backlight_enable(crtc_state, conn_state);
1300 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
1301 
1302 	intel_crtc_vblank_on(crtc_state);
1303 }
1304 
1305 static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder)
1306 {
1307 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1308 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1309 	enum port port;
1310 	enum transcoder dsi_trans;
1311 	u32 tmp;
1312 
1313 	for_each_dsi_port(port, intel_dsi->ports) {
1314 		dsi_trans = dsi_port_to_transcoder(port);
1315 
1316 		/* disable transcoder */
1317 		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1318 		tmp &= ~PIPECONF_ENABLE;
1319 		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
1320 
1321 		/* wait for transcoder to be disabled */
1322 		if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans),
1323 					    PIPECONF_STATE_ENABLE, 50))
1324 			drm_err(&dev_priv->drm,
1325 				"DSI trancoder not disabled\n");
1326 	}
1327 }
1328 
1329 static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder)
1330 {
1331 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1332 
1333 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
1334 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
1335 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
1336 
1337 	/* ensure cmds dispatched to panel */
1338 	wait_for_cmds_dispatched_to_panel(encoder);
1339 }
1340 
1341 static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
1342 {
1343 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1344 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1345 	enum port port;
1346 	enum transcoder dsi_trans;
1347 	u32 tmp;
1348 
1349 	/* disable periodic update mode */
1350 	if (is_cmd_mode(intel_dsi)) {
1351 		for_each_dsi_port(port, intel_dsi->ports) {
1352 			tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
1353 			tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE;
1354 			intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
1355 		}
1356 	}
1357 
1358 	/* put dsi link in ULPS */
1359 	for_each_dsi_port(port, intel_dsi->ports) {
1360 		dsi_trans = dsi_port_to_transcoder(port);
1361 		tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans));
1362 		tmp |= LINK_ENTER_ULPS;
1363 		tmp &= ~LINK_ULPS_TYPE_LP11;
1364 		intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp);
1365 
1366 		if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
1367 				 LINK_IN_ULPS),
1368 				10))
1369 			drm_err(&dev_priv->drm, "DSI link not in ULPS\n");
1370 	}
1371 
1372 	/* disable ddi function */
1373 	for_each_dsi_port(port, intel_dsi->ports) {
1374 		dsi_trans = dsi_port_to_transcoder(port);
1375 		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
1376 		tmp &= ~TRANS_DDI_FUNC_ENABLE;
1377 		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
1378 	}
1379 
1380 	/* disable port sync mode if dual link */
1381 	if (intel_dsi->dual_link) {
1382 		for_each_dsi_port(port, intel_dsi->ports) {
1383 			dsi_trans = dsi_port_to_transcoder(port);
1384 			tmp = intel_de_read(dev_priv,
1385 					    TRANS_DDI_FUNC_CTL2(dsi_trans));
1386 			tmp &= ~PORT_SYNC_MODE_ENABLE;
1387 			intel_de_write(dev_priv,
1388 				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
1389 		}
1390 	}
1391 }
1392 
1393 static void gen11_dsi_disable_port(struct intel_encoder *encoder)
1394 {
1395 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1396 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1397 	u32 tmp;
1398 	enum port port;
1399 
1400 	gen11_dsi_ungate_clocks(encoder);
1401 	for_each_dsi_port(port, intel_dsi->ports) {
1402 		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
1403 		tmp &= ~DDI_BUF_CTL_ENABLE;
1404 		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
1405 
1406 		if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
1407 				 DDI_BUF_IS_IDLE),
1408 				 8))
1409 			drm_err(&dev_priv->drm,
1410 				"DDI port:%c buffer not idle\n",
1411 				port_name(port));
1412 	}
1413 	gen11_dsi_gate_clocks(encoder);
1414 }
1415 
1416 static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
1417 {
1418 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1419 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1420 	enum port port;
1421 	u32 tmp;
1422 
1423 	for_each_dsi_port(port, intel_dsi->ports) {
1424 		intel_wakeref_t wakeref;
1425 
1426 		wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]);
1427 		intel_display_power_put(dev_priv,
1428 					port == PORT_A ?
1429 					POWER_DOMAIN_PORT_DDI_IO_A :
1430 					POWER_DOMAIN_PORT_DDI_IO_B,
1431 					wakeref);
1432 	}
1433 
1434 	/* set mode to DDI */
1435 	for_each_dsi_port(port, intel_dsi->ports) {
1436 		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
1437 		tmp &= ~COMBO_PHY_MODE_DSI;
1438 		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
1439 	}
1440 }
1441 
1442 static void gen11_dsi_disable(struct intel_atomic_state *state,
1443 			      struct intel_encoder *encoder,
1444 			      const struct intel_crtc_state *old_crtc_state,
1445 			      const struct drm_connector_state *old_conn_state)
1446 {
1447 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1448 	struct intel_crtc *crtc = to_intel_crtc(old_conn_state->crtc);
1449 
1450 	/* step1: turn off backlight */
1451 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
1452 	intel_backlight_disable(old_conn_state);
1453 
1454 	/* step2d,e: disable transcoder and wait */
1455 	gen11_dsi_disable_transcoder(encoder);
1456 
1457 	/* Wa_1409054076:icl,jsl,ehl */
1458 	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, false);
1459 
1460 	/* step2f,g: powerdown panel */
1461 	gen11_dsi_powerdown_panel(encoder);
1462 
1463 	/* step2h,i,j: deconfig trancoder */
1464 	gen11_dsi_deconfigure_trancoder(encoder);
1465 
1466 	/* step3: disable port */
1467 	gen11_dsi_disable_port(encoder);
1468 
1469 	gen11_dsi_config_util_pin(encoder, false);
1470 
1471 	/* step4: disable IO power */
1472 	gen11_dsi_disable_io_power(encoder);
1473 }
1474 
1475 static void gen11_dsi_post_disable(struct intel_atomic_state *state,
1476 				   struct intel_encoder *encoder,
1477 				   const struct intel_crtc_state *old_crtc_state,
1478 				   const struct drm_connector_state *old_conn_state)
1479 {
1480 	intel_crtc_vblank_off(old_crtc_state);
1481 
1482 	intel_dsc_disable(old_crtc_state);
1483 
1484 	skl_scaler_disable(old_crtc_state);
1485 }
1486 
1487 static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector,
1488 						 struct drm_display_mode *mode)
1489 {
1490 	/* FIXME: DSC? */
1491 	return intel_dsi_mode_valid(connector, mode);
1492 }
1493 
1494 static void gen11_dsi_get_timings(struct intel_encoder *encoder,
1495 				  struct intel_crtc_state *pipe_config)
1496 {
1497 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1498 	struct drm_display_mode *adjusted_mode =
1499 					&pipe_config->hw.adjusted_mode;
1500 
1501 	if (pipe_config->dsc.compressed_bpp) {
1502 		int div = pipe_config->dsc.compressed_bpp;
1503 		int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
1504 
1505 		adjusted_mode->crtc_htotal =
1506 			DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
1507 		adjusted_mode->crtc_hsync_start =
1508 			DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
1509 		adjusted_mode->crtc_hsync_end =
1510 			DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
1511 	}
1512 
1513 	if (intel_dsi->dual_link) {
1514 		adjusted_mode->crtc_hdisplay *= 2;
1515 		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
1516 			adjusted_mode->crtc_hdisplay -=
1517 						intel_dsi->pixel_overlap;
1518 		adjusted_mode->crtc_htotal *= 2;
1519 	}
1520 	adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay;
1521 	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal;
1522 
1523 	if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) {
1524 		if (intel_dsi->dual_link) {
1525 			adjusted_mode->crtc_hsync_start *= 2;
1526 			adjusted_mode->crtc_hsync_end *= 2;
1527 		}
1528 	}
1529 	adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay;
1530 	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal;
1531 }
1532 
1533 static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi)
1534 {
1535 	struct drm_device *dev = intel_dsi->base.base.dev;
1536 	struct drm_i915_private *dev_priv = to_i915(dev);
1537 	enum transcoder dsi_trans;
1538 	u32 val;
1539 
1540 	if (intel_dsi->ports == BIT(PORT_B))
1541 		dsi_trans = TRANSCODER_DSI_1;
1542 	else
1543 		dsi_trans = TRANSCODER_DSI_0;
1544 
1545 	val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
1546 	return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE);
1547 }
1548 
1549 static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi,
1550 					  struct intel_crtc_state *pipe_config)
1551 {
1552 	if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
1553 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 |
1554 					    I915_MODE_FLAG_DSI_USE_TE0;
1555 	else if (intel_dsi->ports == BIT(PORT_B))
1556 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1;
1557 	else
1558 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0;
1559 }
1560 
1561 static void gen11_dsi_get_config(struct intel_encoder *encoder,
1562 				 struct intel_crtc_state *pipe_config)
1563 {
1564 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
1565 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1566 
1567 	intel_ddi_get_clock(encoder, pipe_config, icl_ddi_combo_get_pll(encoder));
1568 
1569 	pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk;
1570 	if (intel_dsi->dual_link)
1571 		pipe_config->hw.adjusted_mode.crtc_clock *= 2;
1572 
1573 	gen11_dsi_get_timings(encoder, pipe_config);
1574 	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
1575 	pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc);
1576 
1577 	/* Get the details on which TE should be enabled */
1578 	if (is_cmd_mode(intel_dsi))
1579 		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
1580 
1581 	if (gen11_dsi_is_periodic_cmd_mode(intel_dsi))
1582 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
1583 }
1584 
1585 static void gen11_dsi_sync_state(struct intel_encoder *encoder,
1586 				 const struct intel_crtc_state *crtc_state)
1587 {
1588 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1589 	struct intel_crtc *intel_crtc;
1590 	enum pipe pipe;
1591 
1592 	if (!crtc_state)
1593 		return;
1594 
1595 	intel_crtc = to_intel_crtc(crtc_state->uapi.crtc);
1596 	pipe = intel_crtc->pipe;
1597 
1598 	/* wa verify 1409054076:icl,jsl,ehl */
1599 	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B &&
1600 	    !(intel_de_read(dev_priv, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A))
1601 		drm_dbg_kms(&dev_priv->drm,
1602 			    "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n",
1603 			    encoder->base.base.id,
1604 			    encoder->base.name);
1605 }
1606 
1607 static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder,
1608 					struct intel_crtc_state *crtc_state)
1609 {
1610 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1611 	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
1612 	int dsc_max_bpc = DISPLAY_VER(dev_priv) >= 12 ? 12 : 10;
1613 	bool use_dsc;
1614 	int ret;
1615 
1616 	use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc);
1617 	if (!use_dsc)
1618 		return 0;
1619 
1620 	if (crtc_state->pipe_bpp < 8 * 3)
1621 		return -EINVAL;
1622 
1623 	/* FIXME: split only when necessary */
1624 	if (crtc_state->dsc.slice_count > 1)
1625 		crtc_state->dsc.dsc_split = true;
1626 
1627 	vdsc_cfg->convert_rgb = true;
1628 
1629 	/* FIXME: initialize from VBT */
1630 	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
1631 
1632 	ret = intel_dsc_compute_params(crtc_state);
1633 	if (ret)
1634 		return ret;
1635 
1636 	/* DSI specific sanity checks on the common code */
1637 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable);
1638 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422);
1639 	drm_WARN_ON(&dev_priv->drm,
1640 		    vdsc_cfg->pic_width % vdsc_cfg->slice_width);
1641 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8);
1642 	drm_WARN_ON(&dev_priv->drm,
1643 		    vdsc_cfg->pic_height % vdsc_cfg->slice_height);
1644 
1645 	ret = drm_dsc_compute_rc_parameters(vdsc_cfg);
1646 	if (ret)
1647 		return ret;
1648 
1649 	crtc_state->dsc.compression_enable = true;
1650 
1651 	return 0;
1652 }
1653 
1654 static int gen11_dsi_compute_config(struct intel_encoder *encoder,
1655 				    struct intel_crtc_state *pipe_config,
1656 				    struct drm_connector_state *conn_state)
1657 {
1658 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1659 	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
1660 						   base);
1661 	struct intel_connector *intel_connector = intel_dsi->attached_connector;
1662 	struct drm_display_mode *adjusted_mode =
1663 		&pipe_config->hw.adjusted_mode;
1664 	int ret;
1665 
1666 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
1667 
1668 	ret = intel_panel_compute_config(intel_connector, adjusted_mode);
1669 	if (ret)
1670 		return ret;
1671 
1672 	ret = intel_panel_fitting(pipe_config, conn_state);
1673 	if (ret)
1674 		return ret;
1675 
1676 	adjusted_mode->flags = 0;
1677 
1678 	/* Dual link goes to trancoder DSI'0' */
1679 	if (intel_dsi->ports == BIT(PORT_B))
1680 		pipe_config->cpu_transcoder = TRANSCODER_DSI_1;
1681 	else
1682 		pipe_config->cpu_transcoder = TRANSCODER_DSI_0;
1683 
1684 	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888)
1685 		pipe_config->pipe_bpp = 24;
1686 	else
1687 		pipe_config->pipe_bpp = 18;
1688 
1689 	pipe_config->clock_set = true;
1690 
1691 	if (gen11_dsi_dsc_compute_config(encoder, pipe_config))
1692 		drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n");
1693 
1694 	pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5;
1695 
1696 	/*
1697 	 * In case of TE GATE cmd mode, we
1698 	 * receive TE from the slave if
1699 	 * dual link is enabled
1700 	 */
1701 	if (is_cmd_mode(intel_dsi))
1702 		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
1703 
1704 	return 0;
1705 }
1706 
1707 static void gen11_dsi_get_power_domains(struct intel_encoder *encoder,
1708 					struct intel_crtc_state *crtc_state)
1709 {
1710 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1711 
1712 	get_dsi_io_power_domains(i915,
1713 				 enc_to_intel_dsi(encoder));
1714 }
1715 
1716 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
1717 				   enum pipe *pipe)
1718 {
1719 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1720 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1721 	enum transcoder dsi_trans;
1722 	intel_wakeref_t wakeref;
1723 	enum port port;
1724 	bool ret = false;
1725 	u32 tmp;
1726 
1727 	wakeref = intel_display_power_get_if_enabled(dev_priv,
1728 						     encoder->power_domain);
1729 	if (!wakeref)
1730 		return false;
1731 
1732 	for_each_dsi_port(port, intel_dsi->ports) {
1733 		dsi_trans = dsi_port_to_transcoder(port);
1734 		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
1735 		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1736 		case TRANS_DDI_EDP_INPUT_A_ON:
1737 			*pipe = PIPE_A;
1738 			break;
1739 		case TRANS_DDI_EDP_INPUT_B_ONOFF:
1740 			*pipe = PIPE_B;
1741 			break;
1742 		case TRANS_DDI_EDP_INPUT_C_ONOFF:
1743 			*pipe = PIPE_C;
1744 			break;
1745 		case TRANS_DDI_EDP_INPUT_D_ONOFF:
1746 			*pipe = PIPE_D;
1747 			break;
1748 		default:
1749 			drm_err(&dev_priv->drm, "Invalid PIPE input\n");
1750 			goto out;
1751 		}
1752 
1753 		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1754 		ret = tmp & PIPECONF_ENABLE;
1755 	}
1756 out:
1757 	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
1758 	return ret;
1759 }
1760 
1761 static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder,
1762 					    struct intel_crtc_state *crtc_state)
1763 {
1764 	if (crtc_state->dsc.compression_enable) {
1765 		drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n");
1766 		crtc_state->uapi.mode_changed = true;
1767 
1768 		return false;
1769 	}
1770 
1771 	return true;
1772 }
1773 
1774 static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
1775 {
1776 	intel_encoder_destroy(encoder);
1777 }
1778 
1779 static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = {
1780 	.destroy = gen11_dsi_encoder_destroy,
1781 };
1782 
1783 static const struct drm_connector_funcs gen11_dsi_connector_funcs = {
1784 	.detect = intel_panel_detect,
1785 	.late_register = intel_connector_register,
1786 	.early_unregister = intel_connector_unregister,
1787 	.destroy = intel_connector_destroy,
1788 	.fill_modes = drm_helper_probe_single_connector_modes,
1789 	.atomic_get_property = intel_digital_connector_atomic_get_property,
1790 	.atomic_set_property = intel_digital_connector_atomic_set_property,
1791 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1792 	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
1793 };
1794 
1795 static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = {
1796 	.get_modes = intel_dsi_get_modes,
1797 	.mode_valid = gen11_dsi_mode_valid,
1798 	.atomic_check = intel_digital_connector_atomic_check,
1799 };
1800 
1801 static int gen11_dsi_host_attach(struct mipi_dsi_host *host,
1802 				 struct mipi_dsi_device *dsi)
1803 {
1804 	return 0;
1805 }
1806 
1807 static int gen11_dsi_host_detach(struct mipi_dsi_host *host,
1808 				 struct mipi_dsi_device *dsi)
1809 {
1810 	return 0;
1811 }
1812 
1813 static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host,
1814 				       const struct mipi_dsi_msg *msg)
1815 {
1816 	struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host);
1817 	struct mipi_dsi_packet dsi_pkt;
1818 	ssize_t ret;
1819 	bool enable_lpdt = false;
1820 
1821 	ret = mipi_dsi_create_packet(&dsi_pkt, msg);
1822 	if (ret < 0)
1823 		return ret;
1824 
1825 	if (msg->flags & MIPI_DSI_MSG_USE_LPM)
1826 		enable_lpdt = true;
1827 
1828 	/* only long packet contains payload */
1829 	if (mipi_dsi_packet_format_is_long(msg->type)) {
1830 		ret = dsi_send_pkt_payld(intel_dsi_host, &dsi_pkt);
1831 		if (ret < 0)
1832 			return ret;
1833 	}
1834 
1835 	/* send packet header */
1836 	ret  = dsi_send_pkt_hdr(intel_dsi_host, &dsi_pkt, enable_lpdt);
1837 	if (ret < 0)
1838 		return ret;
1839 
1840 	//TODO: add payload receive code if needed
1841 
1842 	ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length;
1843 
1844 	return ret;
1845 }
1846 
1847 static const struct mipi_dsi_host_ops gen11_dsi_host_ops = {
1848 	.attach = gen11_dsi_host_attach,
1849 	.detach = gen11_dsi_host_detach,
1850 	.transfer = gen11_dsi_host_transfer,
1851 };
1852 
1853 #define ICL_PREPARE_CNT_MAX	0x7
1854 #define ICL_CLK_ZERO_CNT_MAX	0xf
1855 #define ICL_TRAIL_CNT_MAX	0x7
1856 #define ICL_TCLK_PRE_CNT_MAX	0x3
1857 #define ICL_TCLK_POST_CNT_MAX	0x7
1858 #define ICL_HS_ZERO_CNT_MAX	0xf
1859 #define ICL_EXIT_ZERO_CNT_MAX	0x7
1860 
1861 static void icl_dphy_param_init(struct intel_dsi *intel_dsi)
1862 {
1863 	struct drm_device *dev = intel_dsi->base.base.dev;
1864 	struct drm_i915_private *dev_priv = to_i915(dev);
1865 	struct intel_connector *connector = intel_dsi->attached_connector;
1866 	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
1867 	u32 tlpx_ns;
1868 	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
1869 	u32 ths_prepare_ns, tclk_trail_ns;
1870 	u32 hs_zero_cnt;
1871 	u32 tclk_pre_cnt, tclk_post_cnt;
1872 
1873 	tlpx_ns = intel_dsi_tlpx_ns(intel_dsi);
1874 
1875 	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);
1876 	ths_prepare_ns = max(mipi_config->ths_prepare,
1877 			     mipi_config->tclk_prepare);
1878 
1879 	/*
1880 	 * prepare cnt in escape clocks
1881 	 * this field represents a hexadecimal value with a precision
1882 	 * of 1.2 – i.e. the most significant bit is the integer
1883 	 * and the least significant 2 bits are fraction bits.
1884 	 * so, the field can represent a range of 0.25 to 1.75
1885 	 */
1886 	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns);
1887 	if (prepare_cnt > ICL_PREPARE_CNT_MAX) {
1888 		drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n",
1889 			    prepare_cnt);
1890 		prepare_cnt = ICL_PREPARE_CNT_MAX;
1891 	}
1892 
1893 	/* clk zero count in escape clocks */
1894 	clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero -
1895 				    ths_prepare_ns, tlpx_ns);
1896 	if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) {
1897 		drm_dbg_kms(&dev_priv->drm,
1898 			    "clk_zero_cnt out of range (%d)\n", clk_zero_cnt);
1899 		clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX;
1900 	}
1901 
1902 	/* trail cnt in escape clocks*/
1903 	trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns);
1904 	if (trail_cnt > ICL_TRAIL_CNT_MAX) {
1905 		drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n",
1906 			    trail_cnt);
1907 		trail_cnt = ICL_TRAIL_CNT_MAX;
1908 	}
1909 
1910 	/* tclk pre count in escape clocks */
1911 	tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns);
1912 	if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) {
1913 		drm_dbg_kms(&dev_priv->drm,
1914 			    "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt);
1915 		tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX;
1916 	}
1917 
1918 	/* tclk post count in escape clocks */
1919 	tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns);
1920 	if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) {
1921 		drm_dbg_kms(&dev_priv->drm,
1922 			    "tclk_post_cnt out of range (%d)\n",
1923 			    tclk_post_cnt);
1924 		tclk_post_cnt = ICL_TCLK_POST_CNT_MAX;
1925 	}
1926 
1927 	/* hs zero cnt in escape clocks */
1928 	hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero -
1929 				   ths_prepare_ns, tlpx_ns);
1930 	if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) {
1931 		drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n",
1932 			    hs_zero_cnt);
1933 		hs_zero_cnt = ICL_HS_ZERO_CNT_MAX;
1934 	}
1935 
1936 	/* hs exit zero cnt in escape clocks */
1937 	exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns);
1938 	if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) {
1939 		drm_dbg_kms(&dev_priv->drm,
1940 			    "exit_zero_cnt out of range (%d)\n",
1941 			    exit_zero_cnt);
1942 		exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX;
1943 	}
1944 
1945 	/* clock lane dphy timings */
1946 	intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE |
1947 			       CLK_PREPARE(prepare_cnt) |
1948 			       CLK_ZERO_OVERRIDE |
1949 			       CLK_ZERO(clk_zero_cnt) |
1950 			       CLK_PRE_OVERRIDE |
1951 			       CLK_PRE(tclk_pre_cnt) |
1952 			       CLK_POST_OVERRIDE |
1953 			       CLK_POST(tclk_post_cnt) |
1954 			       CLK_TRAIL_OVERRIDE |
1955 			       CLK_TRAIL(trail_cnt));
1956 
1957 	/* data lanes dphy timings */
1958 	intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE |
1959 					 HS_PREPARE(prepare_cnt) |
1960 					 HS_ZERO_OVERRIDE |
1961 					 HS_ZERO(hs_zero_cnt) |
1962 					 HS_TRAIL_OVERRIDE |
1963 					 HS_TRAIL(trail_cnt) |
1964 					 HS_EXIT_OVERRIDE |
1965 					 HS_EXIT(exit_zero_cnt));
1966 
1967 	intel_dsi_log_params(intel_dsi);
1968 }
1969 
1970 static void icl_dsi_add_properties(struct intel_connector *connector)
1971 {
1972 	const struct drm_display_mode *fixed_mode =
1973 		intel_panel_preferred_fixed_mode(connector);
1974 	u32 allowed_scalers;
1975 
1976 	allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) |
1977 			   BIT(DRM_MODE_SCALE_FULLSCREEN) |
1978 			   BIT(DRM_MODE_SCALE_CENTER);
1979 
1980 	drm_connector_attach_scaling_mode_property(&connector->base,
1981 						   allowed_scalers);
1982 
1983 	connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
1984 
1985 	drm_connector_set_panel_orientation_with_quirk(&connector->base,
1986 						       intel_dsi_get_panel_orientation(connector),
1987 						       fixed_mode->hdisplay,
1988 						       fixed_mode->vdisplay);
1989 }
1990 
1991 void icl_dsi_init(struct drm_i915_private *dev_priv)
1992 {
1993 	struct drm_device *dev = &dev_priv->drm;
1994 	struct intel_dsi *intel_dsi;
1995 	struct intel_encoder *encoder;
1996 	struct intel_connector *intel_connector;
1997 	struct drm_connector *connector;
1998 	enum port port;
1999 
2000 	if (!intel_bios_is_dsi_present(dev_priv, &port))
2001 		return;
2002 
2003 	intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
2004 	if (!intel_dsi)
2005 		return;
2006 
2007 	intel_connector = intel_connector_alloc();
2008 	if (!intel_connector) {
2009 		kfree(intel_dsi);
2010 		return;
2011 	}
2012 
2013 	encoder = &intel_dsi->base;
2014 	intel_dsi->attached_connector = intel_connector;
2015 	connector = &intel_connector->base;
2016 
2017 	/* register DSI encoder with DRM subsystem */
2018 	drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs,
2019 			 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port));
2020 
2021 	encoder->pre_pll_enable = gen11_dsi_pre_pll_enable;
2022 	encoder->pre_enable = gen11_dsi_pre_enable;
2023 	encoder->enable = gen11_dsi_enable;
2024 	encoder->disable = gen11_dsi_disable;
2025 	encoder->post_disable = gen11_dsi_post_disable;
2026 	encoder->port = port;
2027 	encoder->get_config = gen11_dsi_get_config;
2028 	encoder->sync_state = gen11_dsi_sync_state;
2029 	encoder->update_pipe = intel_backlight_update;
2030 	encoder->compute_config = gen11_dsi_compute_config;
2031 	encoder->get_hw_state = gen11_dsi_get_hw_state;
2032 	encoder->initial_fastset_check = gen11_dsi_initial_fastset_check;
2033 	encoder->type = INTEL_OUTPUT_DSI;
2034 	encoder->cloneable = 0;
2035 	encoder->pipe_mask = ~0;
2036 	encoder->power_domain = POWER_DOMAIN_PORT_DSI;
2037 	encoder->get_power_domains = gen11_dsi_get_power_domains;
2038 	encoder->disable_clock = gen11_dsi_gate_clocks;
2039 	encoder->is_clock_enabled = gen11_dsi_is_clock_enabled;
2040 
2041 	/* register DSI connector with DRM subsystem */
2042 	drm_connector_init(dev, connector, &gen11_dsi_connector_funcs,
2043 			   DRM_MODE_CONNECTOR_DSI);
2044 	drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs);
2045 	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
2046 	connector->interlace_allowed = false;
2047 	connector->doublescan_allowed = false;
2048 	intel_connector->get_hw_state = intel_connector_get_hw_state;
2049 
2050 	/* attach connector to encoder */
2051 	intel_connector_attach_encoder(intel_connector, encoder);
2052 
2053 	intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL, NULL);
2054 
2055 	mutex_lock(&dev->mode_config.mutex);
2056 	intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
2057 	mutex_unlock(&dev->mode_config.mutex);
2058 
2059 	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
2060 		drm_err(&dev_priv->drm, "DSI fixed mode info missing\n");
2061 		goto err;
2062 	}
2063 
2064 	intel_panel_init(intel_connector);
2065 
2066 	intel_backlight_setup(intel_connector, INVALID_PIPE);
2067 
2068 	if (intel_connector->panel.vbt.dsi.config->dual_link)
2069 		intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B);
2070 	else
2071 		intel_dsi->ports = BIT(port);
2072 
2073 	intel_dsi->dcs_backlight_ports = intel_connector->panel.vbt.dsi.bl_ports;
2074 	intel_dsi->dcs_cabc_ports = intel_connector->panel.vbt.dsi.cabc_ports;
2075 
2076 	for_each_dsi_port(port, intel_dsi->ports) {
2077 		struct intel_dsi_host *host;
2078 
2079 		host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port);
2080 		if (!host)
2081 			goto err;
2082 
2083 		intel_dsi->dsi_hosts[port] = host;
2084 	}
2085 
2086 	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
2087 		drm_dbg_kms(&dev_priv->drm, "no device found\n");
2088 		goto err;
2089 	}
2090 
2091 	icl_dphy_param_init(intel_dsi);
2092 
2093 	icl_dsi_add_properties(intel_connector);
2094 	return;
2095 
2096 err:
2097 	drm_connector_cleanup(connector);
2098 	drm_encoder_cleanup(&encoder->base);
2099 	kfree(intel_dsi);
2100 	kfree(intel_connector);
2101 }
2102