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 "i915_reg.h"
33 #include "icl_dsi.h"
34 #include "icl_dsi_regs.h"
35 #include "intel_atomic.h"
36 #include "intel_backlight.h"
37 #include "intel_backlight_regs.h"
38 #include "intel_combo_phy.h"
39 #include "intel_combo_phy_regs.h"
40 #include "intel_connector.h"
41 #include "intel_crtc.h"
42 #include "intel_ddi.h"
43 #include "intel_de.h"
44 #include "intel_dsi.h"
45 #include "intel_dsi_vbt.h"
46 #include "intel_panel.h"
47 #include "intel_vdsc.h"
48 #include "intel_vdsc_regs.h"
49 #include "skl_scaler.h"
50 #include "skl_universal_plane.h"
51 
header_credits_available(struct drm_i915_private * dev_priv,enum transcoder dsi_trans)52 static int header_credits_available(struct drm_i915_private *dev_priv,
53 				    enum transcoder dsi_trans)
54 {
55 	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK)
56 		>> FREE_HEADER_CREDIT_SHIFT;
57 }
58 
payload_credits_available(struct drm_i915_private * dev_priv,enum transcoder dsi_trans)59 static int payload_credits_available(struct drm_i915_private *dev_priv,
60 				     enum transcoder dsi_trans)
61 {
62 	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK)
63 		>> FREE_PLOAD_CREDIT_SHIFT;
64 }
65 
wait_for_header_credits(struct drm_i915_private * dev_priv,enum transcoder dsi_trans,int hdr_credit)66 static bool wait_for_header_credits(struct drm_i915_private *dev_priv,
67 				    enum transcoder dsi_trans, int hdr_credit)
68 {
69 	if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >=
70 			hdr_credit, 100)) {
71 		drm_err(&dev_priv->drm, "DSI header credits not released\n");
72 		return false;
73 	}
74 
75 	return true;
76 }
77 
wait_for_payload_credits(struct drm_i915_private * dev_priv,enum transcoder dsi_trans,int payld_credit)78 static bool wait_for_payload_credits(struct drm_i915_private *dev_priv,
79 				     enum transcoder dsi_trans, int payld_credit)
80 {
81 	if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >=
82 			payld_credit, 100)) {
83 		drm_err(&dev_priv->drm, "DSI payload credits not released\n");
84 		return false;
85 	}
86 
87 	return true;
88 }
89 
dsi_port_to_transcoder(enum port port)90 static enum transcoder dsi_port_to_transcoder(enum port port)
91 {
92 	if (port == PORT_A)
93 		return TRANSCODER_DSI_0;
94 	else
95 		return TRANSCODER_DSI_1;
96 }
97 
wait_for_cmds_dispatched_to_panel(struct intel_encoder * encoder)98 static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder)
99 {
100 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
101 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
102 	struct mipi_dsi_device *dsi;
103 	enum port port;
104 	enum transcoder dsi_trans;
105 	int ret;
106 
107 	/* wait for header/payload credits to be released */
108 	for_each_dsi_port(port, intel_dsi->ports) {
109 		dsi_trans = dsi_port_to_transcoder(port);
110 		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
111 		wait_for_payload_credits(dev_priv, dsi_trans, MAX_PLOAD_CREDIT);
112 	}
113 
114 	/* send nop DCS command */
115 	for_each_dsi_port(port, intel_dsi->ports) {
116 		dsi = intel_dsi->dsi_hosts[port]->device;
117 		dsi->mode_flags |= MIPI_DSI_MODE_LPM;
118 		dsi->channel = 0;
119 		ret = mipi_dsi_dcs_nop(dsi);
120 		if (ret < 0)
121 			drm_err(&dev_priv->drm,
122 				"error sending DCS NOP command\n");
123 	}
124 
125 	/* wait for header credits to be released */
126 	for_each_dsi_port(port, intel_dsi->ports) {
127 		dsi_trans = dsi_port_to_transcoder(port);
128 		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
129 	}
130 
131 	/* wait for LP TX in progress bit to be cleared */
132 	for_each_dsi_port(port, intel_dsi->ports) {
133 		dsi_trans = dsi_port_to_transcoder(port);
134 		if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
135 				  LPTX_IN_PROGRESS), 20))
136 			drm_err(&dev_priv->drm, "LPTX bit not cleared\n");
137 	}
138 }
139 
dsi_send_pkt_payld(struct intel_dsi_host * host,const struct mipi_dsi_packet * packet)140 static int dsi_send_pkt_payld(struct intel_dsi_host *host,
141 			      const struct mipi_dsi_packet *packet)
142 {
143 	struct intel_dsi *intel_dsi = host->intel_dsi;
144 	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
145 	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
146 	const u8 *data = packet->payload;
147 	u32 len = packet->payload_length;
148 	int i, j;
149 
150 	/* payload queue can accept *256 bytes*, check limit */
151 	if (len > MAX_PLOAD_CREDIT * 4) {
152 		drm_err(&i915->drm, "payload size exceeds max queue limit\n");
153 		return -EINVAL;
154 	}
155 
156 	for (i = 0; i < len; i += 4) {
157 		u32 tmp = 0;
158 
159 		if (!wait_for_payload_credits(i915, dsi_trans, 1))
160 			return -EBUSY;
161 
162 		for (j = 0; j < min_t(u32, len - i, 4); j++)
163 			tmp |= *data++ << 8 * j;
164 
165 		intel_de_write(i915, DSI_CMD_TXPYLD(dsi_trans), tmp);
166 	}
167 
168 	return 0;
169 }
170 
dsi_send_pkt_hdr(struct intel_dsi_host * host,const struct mipi_dsi_packet * packet,bool enable_lpdt)171 static int dsi_send_pkt_hdr(struct intel_dsi_host *host,
172 			    const struct mipi_dsi_packet *packet,
173 			    bool enable_lpdt)
174 {
175 	struct intel_dsi *intel_dsi = host->intel_dsi;
176 	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
177 	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
178 	u32 tmp;
179 
180 	if (!wait_for_header_credits(dev_priv, dsi_trans, 1))
181 		return -EBUSY;
182 
183 	tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans));
184 
185 	if (packet->payload)
186 		tmp |= PAYLOAD_PRESENT;
187 	else
188 		tmp &= ~PAYLOAD_PRESENT;
189 
190 	tmp &= ~VBLANK_FENCE;
191 
192 	if (enable_lpdt)
193 		tmp |= LP_DATA_TRANSFER;
194 	else
195 		tmp &= ~LP_DATA_TRANSFER;
196 
197 	tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK);
198 	tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT);
199 	tmp |= ((packet->header[0] & DT_MASK) << DT_SHIFT);
200 	tmp |= (packet->header[1] << PARAM_WC_LOWER_SHIFT);
201 	tmp |= (packet->header[2] << PARAM_WC_UPPER_SHIFT);
202 	intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp);
203 
204 	return 0;
205 }
206 
icl_dsi_frame_update(struct intel_crtc_state * crtc_state)207 void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
208 {
209 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
210 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
211 	u32 mode_flags;
212 	enum port port;
213 
214 	mode_flags = crtc_state->mode_flags;
215 
216 	/*
217 	 * case 1 also covers dual link
218 	 * In case of dual link, frame update should be set on
219 	 * DSI_0
220 	 */
221 	if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0)
222 		port = PORT_A;
223 	else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1)
224 		port = PORT_B;
225 	else
226 		return;
227 
228 	intel_de_rmw(dev_priv, DSI_CMD_FRMCTL(port), 0, DSI_FRAME_UPDATE_REQUEST);
229 }
230 
dsi_program_swing_and_deemphasis(struct intel_encoder * encoder)231 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
232 {
233 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
234 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
235 	enum phy phy;
236 	u32 tmp, mask, val;
237 	int lane;
238 
239 	for_each_dsi_phy(phy, intel_dsi->phys) {
240 		/*
241 		 * Program voltage swing and pre-emphasis level values as per
242 		 * table in BSPEC under DDI buffer programing
243 		 */
244 		mask = SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK;
245 		val = SCALING_MODE_SEL(0x2) | TAP2_DISABLE | TAP3_DISABLE |
246 		      RTERM_SELECT(0x6);
247 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
248 		tmp &= ~mask;
249 		tmp |= val;
250 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
251 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), mask, val);
252 
253 		mask = SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
254 		       RCOMP_SCALAR_MASK;
255 		val = SWING_SEL_UPPER(0x2) | SWING_SEL_LOWER(0x2) |
256 		      RCOMP_SCALAR(0x98);
257 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
258 		tmp &= ~mask;
259 		tmp |= val;
260 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
261 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW2_AUX(phy), mask, val);
262 
263 		mask = POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
264 		       CURSOR_COEFF_MASK;
265 		val = POST_CURSOR_1(0x0) | POST_CURSOR_2(0x0) |
266 		      CURSOR_COEFF(0x3f);
267 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_AUX(phy), mask, val);
268 
269 		/* Bspec: must not use GRP register for write */
270 		for (lane = 0; lane <= 3; lane++)
271 			intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(lane, phy),
272 				     mask, val);
273 	}
274 }
275 
configure_dual_link_mode(struct intel_encoder * encoder,const struct intel_crtc_state * pipe_config)276 static void configure_dual_link_mode(struct intel_encoder *encoder,
277 				     const struct intel_crtc_state *pipe_config)
278 {
279 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
280 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
281 	i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
282 	u32 dss_ctl1;
283 
284 	/* FIXME: Move all DSS handling to intel_vdsc.c */
285 	if (DISPLAY_VER(dev_priv) >= 12) {
286 		struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
287 
288 		dss_ctl1_reg = ICL_PIPE_DSS_CTL1(crtc->pipe);
289 		dss_ctl2_reg = ICL_PIPE_DSS_CTL2(crtc->pipe);
290 	} else {
291 		dss_ctl1_reg = DSS_CTL1;
292 		dss_ctl2_reg = DSS_CTL2;
293 	}
294 
295 	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg);
296 	dss_ctl1 |= SPLITTER_ENABLE;
297 	dss_ctl1 &= ~OVERLAP_PIXELS_MASK;
298 	dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap);
299 
300 	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
301 		const struct drm_display_mode *adjusted_mode =
302 					&pipe_config->hw.adjusted_mode;
303 		u16 hactive = adjusted_mode->crtc_hdisplay;
304 		u16 dl_buffer_depth;
305 
306 		dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE;
307 		dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap;
308 
309 		if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH)
310 			drm_err(&dev_priv->drm,
311 				"DL buffer depth exceed max value\n");
312 
313 		dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK;
314 		dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
315 		intel_de_rmw(dev_priv, dss_ctl2_reg, RIGHT_DL_BUF_TARGET_DEPTH_MASK,
316 			     RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth));
317 	} else {
318 		/* Interleave */
319 		dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE;
320 	}
321 
322 	intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1);
323 }
324 
325 /* aka DSI 8X clock */
afe_clk(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)326 static int afe_clk(struct intel_encoder *encoder,
327 		   const struct intel_crtc_state *crtc_state)
328 {
329 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
330 	int bpp;
331 
332 	if (crtc_state->dsc.compression_enable)
333 		bpp = crtc_state->dsc.compressed_bpp;
334 	else
335 		bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
336 
337 	return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count);
338 }
339 
gen11_dsi_program_esc_clk_div(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)340 static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder,
341 					  const struct intel_crtc_state *crtc_state)
342 {
343 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
344 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
345 	enum port port;
346 	int afe_clk_khz;
347 	int theo_word_clk, act_word_clk;
348 	u32 esc_clk_div_m, esc_clk_div_m_phy;
349 
350 	afe_clk_khz = afe_clk(encoder, crtc_state);
351 
352 	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
353 		theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK);
354 		act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2);
355 		esc_clk_div_m = act_word_clk * 8;
356 		esc_clk_div_m_phy = (act_word_clk - 1) / 2;
357 	} else {
358 		esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK);
359 	}
360 
361 	for_each_dsi_port(port, intel_dsi->ports) {
362 		intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port),
363 			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
364 		intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port));
365 	}
366 
367 	for_each_dsi_port(port, intel_dsi->ports) {
368 		intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port),
369 			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
370 		intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port));
371 	}
372 
373 	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
374 		for_each_dsi_port(port, intel_dsi->ports) {
375 			intel_de_write(dev_priv, ADL_MIPIO_DW(port, 8),
376 				       esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY);
377 			intel_de_posting_read(dev_priv, ADL_MIPIO_DW(port, 8));
378 		}
379 	}
380 }
381 
get_dsi_io_power_domains(struct drm_i915_private * dev_priv,struct intel_dsi * intel_dsi)382 static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv,
383 				     struct intel_dsi *intel_dsi)
384 {
385 	enum port port;
386 
387 	for_each_dsi_port(port, intel_dsi->ports) {
388 		drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]);
389 		intel_dsi->io_wakeref[port] =
390 			intel_display_power_get(dev_priv,
391 						port == PORT_A ?
392 						POWER_DOMAIN_PORT_DDI_IO_A :
393 						POWER_DOMAIN_PORT_DDI_IO_B);
394 	}
395 }
396 
gen11_dsi_enable_io_power(struct intel_encoder * encoder)397 static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
398 {
399 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
400 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
401 	enum port port;
402 
403 	for_each_dsi_port(port, intel_dsi->ports)
404 		intel_de_rmw(dev_priv, ICL_DSI_IO_MODECTL(port),
405 			     0, COMBO_PHY_MODE_DSI);
406 
407 	get_dsi_io_power_domains(dev_priv, intel_dsi);
408 }
409 
gen11_dsi_power_up_lanes(struct intel_encoder * encoder)410 static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder)
411 {
412 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
413 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
414 	enum phy phy;
415 
416 	for_each_dsi_phy(phy, intel_dsi->phys)
417 		intel_combo_phy_power_up_lanes(dev_priv, phy, true,
418 					       intel_dsi->lane_count, false);
419 }
420 
gen11_dsi_config_phy_lanes_sequence(struct intel_encoder * encoder)421 static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
422 {
423 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
424 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
425 	enum phy phy;
426 	u32 tmp;
427 	int lane;
428 
429 	/* Step 4b(i) set loadgen select for transmit and aux lanes */
430 	for_each_dsi_phy(phy, intel_dsi->phys) {
431 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_AUX(phy), LOADGEN_SELECT, 0);
432 		for (lane = 0; lane <= 3; lane++)
433 			intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(lane, phy),
434 				     LOADGEN_SELECT, lane != 2 ? LOADGEN_SELECT : 0);
435 	}
436 
437 	/* Step 4b(ii) set latency optimization for transmit and aux lanes */
438 	for_each_dsi_phy(phy, intel_dsi->phys) {
439 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW2_AUX(phy),
440 			     FRC_LATENCY_OPTIM_MASK, FRC_LATENCY_OPTIM_VAL(0x5));
441 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
442 		tmp &= ~FRC_LATENCY_OPTIM_MASK;
443 		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
444 		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
445 
446 		/* For EHL, TGL, set latency optimization for PCS_DW1 lanes */
447 		if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv) ||
448 		    (DISPLAY_VER(dev_priv) >= 12)) {
449 			intel_de_rmw(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
450 				     LATENCY_OPTIM_MASK, LATENCY_OPTIM_VAL(0));
451 
452 			tmp = intel_de_read(dev_priv,
453 					    ICL_PORT_PCS_DW1_LN(0, phy));
454 			tmp &= ~LATENCY_OPTIM_MASK;
455 			tmp |= LATENCY_OPTIM_VAL(0x1);
456 			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy),
457 				       tmp);
458 		}
459 	}
460 
461 }
462 
gen11_dsi_voltage_swing_program_seq(struct intel_encoder * encoder)463 static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
464 {
465 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
466 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
467 	u32 tmp;
468 	enum phy phy;
469 
470 	/* clear common keeper enable bit */
471 	for_each_dsi_phy(phy, intel_dsi->phys) {
472 		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
473 		tmp &= ~COMMON_KEEPER_EN;
474 		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp);
475 		intel_de_rmw(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), COMMON_KEEPER_EN, 0);
476 	}
477 
478 	/*
479 	 * Set SUS Clock Config bitfield to 11b
480 	 * Note: loadgen select program is done
481 	 * as part of lane phy sequence configuration
482 	 */
483 	for_each_dsi_phy(phy, intel_dsi->phys)
484 		intel_de_rmw(dev_priv, ICL_PORT_CL_DW5(phy), 0, SUS_CLOCK_CONFIG);
485 
486 	/* Clear training enable to change swing values */
487 	for_each_dsi_phy(phy, intel_dsi->phys) {
488 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
489 		tmp &= ~TX_TRAINING_EN;
490 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
491 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), TX_TRAINING_EN, 0);
492 	}
493 
494 	/* Program swing and de-emphasis */
495 	dsi_program_swing_and_deemphasis(encoder);
496 
497 	/* Set training enable to trigger update */
498 	for_each_dsi_phy(phy, intel_dsi->phys) {
499 		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
500 		tmp |= TX_TRAINING_EN;
501 		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
502 		intel_de_rmw(dev_priv, ICL_PORT_TX_DW5_AUX(phy), 0, TX_TRAINING_EN);
503 	}
504 }
505 
gen11_dsi_enable_ddi_buffer(struct intel_encoder * encoder)506 static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder)
507 {
508 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
509 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
510 	enum port port;
511 
512 	for_each_dsi_port(port, intel_dsi->ports) {
513 		intel_de_rmw(dev_priv, DDI_BUF_CTL(port), 0, DDI_BUF_CTL_ENABLE);
514 
515 		if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
516 				  DDI_BUF_IS_IDLE),
517 				  500))
518 			drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n",
519 				port_name(port));
520 	}
521 }
522 
523 static void
gen11_dsi_setup_dphy_timings(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)524 gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
525 			     const struct intel_crtc_state *crtc_state)
526 {
527 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
528 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
529 	enum port port;
530 	enum phy phy;
531 
532 	/* Program DPHY clock lanes timings */
533 	for_each_dsi_port(port, intel_dsi->ports)
534 		intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port),
535 			       intel_dsi->dphy_reg);
536 
537 	/* Program DPHY data lanes timings */
538 	for_each_dsi_port(port, intel_dsi->ports)
539 		intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port),
540 			       intel_dsi->dphy_data_lane_reg);
541 
542 	/*
543 	 * If DSI link operating at or below an 800 MHz,
544 	 * TA_SURE should be override and programmed to
545 	 * a value '0' inside TA_PARAM_REGISTERS otherwise
546 	 * leave all fields at HW default values.
547 	 */
548 	if (DISPLAY_VER(dev_priv) == 11) {
549 		if (afe_clk(encoder, crtc_state) <= 800000) {
550 			for_each_dsi_port(port, intel_dsi->ports)
551 				intel_de_rmw(dev_priv, DPHY_TA_TIMING_PARAM(port),
552 					     TA_SURE_MASK,
553 					     TA_SURE_OVERRIDE | TA_SURE(0));
554 		}
555 	}
556 
557 	if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv)) {
558 		for_each_dsi_phy(phy, intel_dsi->phys)
559 			intel_de_rmw(dev_priv, ICL_DPHY_CHKN(phy),
560 				     0, ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP);
561 	}
562 }
563 
564 static void
gen11_dsi_setup_timings(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)565 gen11_dsi_setup_timings(struct intel_encoder *encoder,
566 			const struct intel_crtc_state *crtc_state)
567 {
568 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
569 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
570 	enum port port;
571 
572 	/* Program T-INIT master registers */
573 	for_each_dsi_port(port, intel_dsi->ports)
574 		intel_de_rmw(dev_priv, ICL_DSI_T_INIT_MASTER(port),
575 			     DSI_T_INIT_MASTER_MASK, intel_dsi->init_count);
576 
577 	/* shadow register inside display core */
578 	for_each_dsi_port(port, intel_dsi->ports)
579 		intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port),
580 			       intel_dsi->dphy_reg);
581 
582 	/* shadow register inside display core */
583 	for_each_dsi_port(port, intel_dsi->ports)
584 		intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port),
585 			       intel_dsi->dphy_data_lane_reg);
586 
587 	/* shadow register inside display core */
588 	if (DISPLAY_VER(dev_priv) == 11) {
589 		if (afe_clk(encoder, crtc_state) <= 800000) {
590 			for_each_dsi_port(port, intel_dsi->ports) {
591 				intel_de_rmw(dev_priv, DSI_TA_TIMING_PARAM(port),
592 					     TA_SURE_MASK,
593 					     TA_SURE_OVERRIDE | TA_SURE(0));
594 			}
595 		}
596 	}
597 }
598 
gen11_dsi_gate_clocks(struct intel_encoder * encoder)599 static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
600 {
601 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
602 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
603 	u32 tmp;
604 	enum phy phy;
605 
606 	mutex_lock(&dev_priv->display.dpll.lock);
607 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
608 	for_each_dsi_phy(phy, intel_dsi->phys)
609 		tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
610 
611 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
612 	mutex_unlock(&dev_priv->display.dpll.lock);
613 }
614 
gen11_dsi_ungate_clocks(struct intel_encoder * encoder)615 static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
616 {
617 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
618 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
619 	u32 tmp;
620 	enum phy phy;
621 
622 	mutex_lock(&dev_priv->display.dpll.lock);
623 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
624 	for_each_dsi_phy(phy, intel_dsi->phys)
625 		tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
626 
627 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
628 	mutex_unlock(&dev_priv->display.dpll.lock);
629 }
630 
gen11_dsi_is_clock_enabled(struct intel_encoder * encoder)631 static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder)
632 {
633 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
634 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
635 	bool clock_enabled = false;
636 	enum phy phy;
637 	u32 tmp;
638 
639 	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
640 
641 	for_each_dsi_phy(phy, intel_dsi->phys) {
642 		if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)))
643 			clock_enabled = true;
644 	}
645 
646 	return clock_enabled;
647 }
648 
gen11_dsi_map_pll(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)649 static void gen11_dsi_map_pll(struct intel_encoder *encoder,
650 			      const struct intel_crtc_state *crtc_state)
651 {
652 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
653 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
654 	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
655 	enum phy phy;
656 	u32 val;
657 
658 	mutex_lock(&dev_priv->display.dpll.lock);
659 
660 	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
661 	for_each_dsi_phy(phy, intel_dsi->phys) {
662 		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
663 		val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
664 	}
665 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
666 
667 	for_each_dsi_phy(phy, intel_dsi->phys) {
668 		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
669 	}
670 	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
671 
672 	intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0);
673 
674 	mutex_unlock(&dev_priv->display.dpll.lock);
675 }
676 
677 static void
gen11_dsi_configure_transcoder(struct intel_encoder * encoder,const struct intel_crtc_state * pipe_config)678 gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
679 			       const struct intel_crtc_state *pipe_config)
680 {
681 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
682 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
683 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
684 	enum pipe pipe = crtc->pipe;
685 	u32 tmp;
686 	enum port port;
687 	enum transcoder dsi_trans;
688 
689 	for_each_dsi_port(port, intel_dsi->ports) {
690 		dsi_trans = dsi_port_to_transcoder(port);
691 		tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
692 
693 		if (intel_dsi->eotp_pkt)
694 			tmp &= ~EOTP_DISABLED;
695 		else
696 			tmp |= EOTP_DISABLED;
697 
698 		/* enable link calibration if freq > 1.5Gbps */
699 		if (afe_clk(encoder, pipe_config) >= 1500 * 1000) {
700 			tmp &= ~LINK_CALIBRATION_MASK;
701 			tmp |= CALIBRATION_ENABLED_INITIAL_ONLY;
702 		}
703 
704 		/* configure continuous clock */
705 		tmp &= ~CONTINUOUS_CLK_MASK;
706 		if (intel_dsi->clock_stop)
707 			tmp |= CLK_ENTER_LP_AFTER_DATA;
708 		else
709 			tmp |= CLK_HS_CONTINUOUS;
710 
711 		/* configure buffer threshold limit to minimum */
712 		tmp &= ~PIX_BUF_THRESHOLD_MASK;
713 		tmp |= PIX_BUF_THRESHOLD_1_4;
714 
715 		/* set virtual channel to '0' */
716 		tmp &= ~PIX_VIRT_CHAN_MASK;
717 		tmp |= PIX_VIRT_CHAN(0);
718 
719 		/* program BGR transmission */
720 		if (intel_dsi->bgr_enabled)
721 			tmp |= BGR_TRANSMISSION;
722 
723 		/* select pixel format */
724 		tmp &= ~PIX_FMT_MASK;
725 		if (pipe_config->dsc.compression_enable) {
726 			tmp |= PIX_FMT_COMPRESSED;
727 		} else {
728 			switch (intel_dsi->pixel_format) {
729 			default:
730 				MISSING_CASE(intel_dsi->pixel_format);
731 				fallthrough;
732 			case MIPI_DSI_FMT_RGB565:
733 				tmp |= PIX_FMT_RGB565;
734 				break;
735 			case MIPI_DSI_FMT_RGB666_PACKED:
736 				tmp |= PIX_FMT_RGB666_PACKED;
737 				break;
738 			case MIPI_DSI_FMT_RGB666:
739 				tmp |= PIX_FMT_RGB666_LOOSE;
740 				break;
741 			case MIPI_DSI_FMT_RGB888:
742 				tmp |= PIX_FMT_RGB888;
743 				break;
744 			}
745 		}
746 
747 		if (DISPLAY_VER(dev_priv) >= 12) {
748 			if (is_vid_mode(intel_dsi))
749 				tmp |= BLANKING_PACKET_ENABLE;
750 		}
751 
752 		/* program DSI operation mode */
753 		if (is_vid_mode(intel_dsi)) {
754 			tmp &= ~OP_MODE_MASK;
755 			switch (intel_dsi->video_mode) {
756 			default:
757 				MISSING_CASE(intel_dsi->video_mode);
758 				fallthrough;
759 			case NON_BURST_SYNC_EVENTS:
760 				tmp |= VIDEO_MODE_SYNC_EVENT;
761 				break;
762 			case NON_BURST_SYNC_PULSE:
763 				tmp |= VIDEO_MODE_SYNC_PULSE;
764 				break;
765 			}
766 		} else {
767 			/*
768 			 * FIXME: Retrieve this info from VBT.
769 			 * As per the spec when dsi transcoder is operating
770 			 * in TE GATE mode, TE comes from GPIO
771 			 * which is UTIL PIN for DSI 0.
772 			 * Also this GPIO would not be used for other
773 			 * purposes is an assumption.
774 			 */
775 			tmp &= ~OP_MODE_MASK;
776 			tmp |= CMD_MODE_TE_GATE;
777 			tmp |= TE_SOURCE_GPIO;
778 		}
779 
780 		intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp);
781 	}
782 
783 	/* enable port sync mode if dual link */
784 	if (intel_dsi->dual_link) {
785 		for_each_dsi_port(port, intel_dsi->ports) {
786 			dsi_trans = dsi_port_to_transcoder(port);
787 			intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL2(dsi_trans),
788 				     0, PORT_SYNC_MODE_ENABLE);
789 		}
790 
791 		/* configure stream splitting */
792 		configure_dual_link_mode(encoder, pipe_config);
793 	}
794 
795 	for_each_dsi_port(port, intel_dsi->ports) {
796 		dsi_trans = dsi_port_to_transcoder(port);
797 
798 		/* select data lane width */
799 		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
800 		tmp &= ~DDI_PORT_WIDTH_MASK;
801 		tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count);
802 
803 		/* select input pipe */
804 		tmp &= ~TRANS_DDI_EDP_INPUT_MASK;
805 		switch (pipe) {
806 		default:
807 			MISSING_CASE(pipe);
808 			fallthrough;
809 		case PIPE_A:
810 			tmp |= TRANS_DDI_EDP_INPUT_A_ON;
811 			break;
812 		case PIPE_B:
813 			tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
814 			break;
815 		case PIPE_C:
816 			tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
817 			break;
818 		case PIPE_D:
819 			tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF;
820 			break;
821 		}
822 
823 		/* enable DDI buffer */
824 		tmp |= TRANS_DDI_FUNC_ENABLE;
825 		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
826 	}
827 
828 	/* wait for link ready */
829 	for_each_dsi_port(port, intel_dsi->ports) {
830 		dsi_trans = dsi_port_to_transcoder(port);
831 		if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) &
832 				 LINK_READY), 2500))
833 			drm_err(&dev_priv->drm, "DSI link not ready\n");
834 	}
835 }
836 
837 static void
gen11_dsi_set_transcoder_timings(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)838 gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder,
839 				 const struct intel_crtc_state *crtc_state)
840 {
841 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
842 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
843 	const struct drm_display_mode *adjusted_mode =
844 		&crtc_state->hw.adjusted_mode;
845 	enum port port;
846 	enum transcoder dsi_trans;
847 	/* horizontal timings */
848 	u16 htotal, hactive, hsync_start, hsync_end, hsync_size;
849 	u16 hback_porch;
850 	/* vertical timings */
851 	u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift;
852 	int mul = 1, div = 1;
853 
854 	/*
855 	 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account
856 	 * for slower link speed if DSC is enabled.
857 	 *
858 	 * The compression frequency ratio is the ratio between compressed and
859 	 * non-compressed link speeds, and simplifies down to the ratio between
860 	 * compressed and non-compressed bpp.
861 	 */
862 	if (crtc_state->dsc.compression_enable) {
863 		mul = crtc_state->dsc.compressed_bpp;
864 		div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
865 	}
866 
867 	hactive = adjusted_mode->crtc_hdisplay;
868 
869 	if (is_vid_mode(intel_dsi))
870 		htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
871 	else
872 		htotal = DIV_ROUND_UP((hactive + 160) * mul, div);
873 
874 	hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
875 	hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
876 	hsync_size  = hsync_end - hsync_start;
877 	hback_porch = (adjusted_mode->crtc_htotal -
878 		       adjusted_mode->crtc_hsync_end);
879 	vactive = adjusted_mode->crtc_vdisplay;
880 
881 	if (is_vid_mode(intel_dsi)) {
882 		vtotal = adjusted_mode->crtc_vtotal;
883 	} else {
884 		int bpp, line_time_us, byte_clk_period_ns;
885 
886 		if (crtc_state->dsc.compression_enable)
887 			bpp = crtc_state->dsc.compressed_bpp;
888 		else
889 			bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
890 
891 		byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state);
892 		line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count);
893 		vtotal = vactive + DIV_ROUND_UP(400, line_time_us);
894 	}
895 	vsync_start = adjusted_mode->crtc_vsync_start;
896 	vsync_end = adjusted_mode->crtc_vsync_end;
897 	vsync_shift = hsync_start - htotal / 2;
898 
899 	if (intel_dsi->dual_link) {
900 		hactive /= 2;
901 		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
902 			hactive += intel_dsi->pixel_overlap;
903 		htotal /= 2;
904 	}
905 
906 	/* minimum hactive as per bspec: 256 pixels */
907 	if (adjusted_mode->crtc_hdisplay < 256)
908 		drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n");
909 
910 	/* if RGB666 format, then hactive must be multiple of 4 pixels */
911 	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0)
912 		drm_err(&dev_priv->drm,
913 			"hactive pixels are not multiple of 4\n");
914 
915 	/* program TRANS_HTOTAL register */
916 	for_each_dsi_port(port, intel_dsi->ports) {
917 		dsi_trans = dsi_port_to_transcoder(port);
918 		intel_de_write(dev_priv, TRANS_HTOTAL(dsi_trans),
919 			       HACTIVE(hactive - 1) | HTOTAL(htotal - 1));
920 	}
921 
922 	/* TRANS_HSYNC register to be programmed only for video mode */
923 	if (is_vid_mode(intel_dsi)) {
924 		if (intel_dsi->video_mode == NON_BURST_SYNC_PULSE) {
925 			/* BSPEC: hsync size should be atleast 16 pixels */
926 			if (hsync_size < 16)
927 				drm_err(&dev_priv->drm,
928 					"hsync size < 16 pixels\n");
929 		}
930 
931 		if (hback_porch < 16)
932 			drm_err(&dev_priv->drm, "hback porch < 16 pixels\n");
933 
934 		if (intel_dsi->dual_link) {
935 			hsync_start /= 2;
936 			hsync_end /= 2;
937 		}
938 
939 		for_each_dsi_port(port, intel_dsi->ports) {
940 			dsi_trans = dsi_port_to_transcoder(port);
941 			intel_de_write(dev_priv, TRANS_HSYNC(dsi_trans),
942 				       HSYNC_START(hsync_start - 1) | HSYNC_END(hsync_end - 1));
943 		}
944 	}
945 
946 	/* program TRANS_VTOTAL register */
947 	for_each_dsi_port(port, intel_dsi->ports) {
948 		dsi_trans = dsi_port_to_transcoder(port);
949 		/*
950 		 * FIXME: Programing this by assuming progressive mode, since
951 		 * non-interlaced info from VBT is not saved inside
952 		 * struct drm_display_mode.
953 		 * For interlace mode: program required pixel minus 2
954 		 */
955 		intel_de_write(dev_priv, TRANS_VTOTAL(dsi_trans),
956 			       VACTIVE(vactive - 1) | VTOTAL(vtotal - 1));
957 	}
958 
959 	if (vsync_end < vsync_start || vsync_end > vtotal)
960 		drm_err(&dev_priv->drm, "Invalid vsync_end value\n");
961 
962 	if (vsync_start < vactive)
963 		drm_err(&dev_priv->drm, "vsync_start less than vactive\n");
964 
965 	/* program TRANS_VSYNC register for video mode only */
966 	if (is_vid_mode(intel_dsi)) {
967 		for_each_dsi_port(port, intel_dsi->ports) {
968 			dsi_trans = dsi_port_to_transcoder(port);
969 			intel_de_write(dev_priv, TRANS_VSYNC(dsi_trans),
970 				       VSYNC_START(vsync_start - 1) | VSYNC_END(vsync_end - 1));
971 		}
972 	}
973 
974 	/*
975 	 * FIXME: It has to be programmed only for video modes and interlaced
976 	 * modes. Put the check condition here once interlaced
977 	 * info available as described above.
978 	 * program TRANS_VSYNCSHIFT register
979 	 */
980 	if (is_vid_mode(intel_dsi)) {
981 		for_each_dsi_port(port, intel_dsi->ports) {
982 			dsi_trans = dsi_port_to_transcoder(port);
983 			intel_de_write(dev_priv, TRANS_VSYNCSHIFT(dsi_trans),
984 				       vsync_shift);
985 		}
986 	}
987 
988 	/*
989 	 * program TRANS_VBLANK register, should be same as vtotal programmed
990 	 *
991 	 * FIXME get rid of these local hacks and do it right,
992 	 * this will not handle eg. delayed vblank correctly.
993 	 */
994 	if (DISPLAY_VER(dev_priv) >= 12) {
995 		for_each_dsi_port(port, intel_dsi->ports) {
996 			dsi_trans = dsi_port_to_transcoder(port);
997 			intel_de_write(dev_priv, TRANS_VBLANK(dsi_trans),
998 				       VBLANK_START(vactive - 1) | VBLANK_END(vtotal - 1));
999 		}
1000 	}
1001 }
1002 
gen11_dsi_enable_transcoder(struct intel_encoder * encoder)1003 static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder)
1004 {
1005 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1006 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1007 	enum port port;
1008 	enum transcoder dsi_trans;
1009 
1010 	for_each_dsi_port(port, intel_dsi->ports) {
1011 		dsi_trans = dsi_port_to_transcoder(port);
1012 		intel_de_rmw(dev_priv, TRANSCONF(dsi_trans), 0, TRANSCONF_ENABLE);
1013 
1014 		/* wait for transcoder to be enabled */
1015 		if (intel_de_wait_for_set(dev_priv, TRANSCONF(dsi_trans),
1016 					  TRANSCONF_STATE_ENABLE, 10))
1017 			drm_err(&dev_priv->drm,
1018 				"DSI transcoder not enabled\n");
1019 	}
1020 }
1021 
gen11_dsi_setup_timeouts(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)1022 static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
1023 				     const struct intel_crtc_state *crtc_state)
1024 {
1025 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1026 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1027 	enum port port;
1028 	enum transcoder dsi_trans;
1029 	u32 hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
1030 
1031 	/*
1032 	 * escape clock count calculation:
1033 	 * BYTE_CLK_COUNT = TIME_NS/(8 * UI)
1034 	 * UI (nsec) = (10^6)/Bitrate
1035 	 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate
1036 	 * ESCAPE_CLK_COUNT  = TIME_NS/ESC_CLK_NS
1037 	 */
1038 	divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000;
1039 	mul = 8 * 1000000;
1040 	hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul,
1041 				     divisor);
1042 	lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor);
1043 	ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor);
1044 
1045 	for_each_dsi_port(port, intel_dsi->ports) {
1046 		dsi_trans = dsi_port_to_transcoder(port);
1047 
1048 		/* program hst_tx_timeout */
1049 		intel_de_rmw(dev_priv, DSI_HSTX_TO(dsi_trans),
1050 			     HSTX_TIMEOUT_VALUE_MASK,
1051 			     HSTX_TIMEOUT_VALUE(hs_tx_timeout));
1052 
1053 		/* FIXME: DSI_CALIB_TO */
1054 
1055 		/* program lp_rx_host timeout */
1056 		intel_de_rmw(dev_priv, DSI_LPRX_HOST_TO(dsi_trans),
1057 			     LPRX_TIMEOUT_VALUE_MASK,
1058 			     LPRX_TIMEOUT_VALUE(lp_rx_timeout));
1059 
1060 		/* FIXME: DSI_PWAIT_TO */
1061 
1062 		/* program turn around timeout */
1063 		intel_de_rmw(dev_priv, DSI_TA_TO(dsi_trans),
1064 			     TA_TIMEOUT_VALUE_MASK,
1065 			     TA_TIMEOUT_VALUE(ta_timeout));
1066 	}
1067 }
1068 
gen11_dsi_config_util_pin(struct intel_encoder * encoder,bool enable)1069 static void gen11_dsi_config_util_pin(struct intel_encoder *encoder,
1070 				      bool enable)
1071 {
1072 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1073 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1074 	u32 tmp;
1075 
1076 	/*
1077 	 * used as TE i/p for DSI0,
1078 	 * for dual link/DSI1 TE is from slave DSI1
1079 	 * through GPIO.
1080 	 */
1081 	if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B)))
1082 		return;
1083 
1084 	tmp = intel_de_read(dev_priv, UTIL_PIN_CTL);
1085 
1086 	if (enable) {
1087 		tmp |= UTIL_PIN_DIRECTION_INPUT;
1088 		tmp |= UTIL_PIN_ENABLE;
1089 	} else {
1090 		tmp &= ~UTIL_PIN_ENABLE;
1091 	}
1092 	intel_de_write(dev_priv, UTIL_PIN_CTL, tmp);
1093 }
1094 
1095 static void
gen11_dsi_enable_port_and_phy(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)1096 gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
1097 			      const struct intel_crtc_state *crtc_state)
1098 {
1099 	/* step 4a: power up all lanes of the DDI used by DSI */
1100 	gen11_dsi_power_up_lanes(encoder);
1101 
1102 	/* step 4b: configure lane sequencing of the Combo-PHY transmitters */
1103 	gen11_dsi_config_phy_lanes_sequence(encoder);
1104 
1105 	/* step 4c: configure voltage swing and skew */
1106 	gen11_dsi_voltage_swing_program_seq(encoder);
1107 
1108 	/* setup D-PHY timings */
1109 	gen11_dsi_setup_dphy_timings(encoder, crtc_state);
1110 
1111 	/* enable DDI buffer */
1112 	gen11_dsi_enable_ddi_buffer(encoder);
1113 
1114 	gen11_dsi_gate_clocks(encoder);
1115 
1116 	gen11_dsi_setup_timings(encoder, crtc_state);
1117 
1118 	/* Since transcoder is configured to take events from GPIO */
1119 	gen11_dsi_config_util_pin(encoder, true);
1120 
1121 	/* step 4h: setup DSI protocol timeouts */
1122 	gen11_dsi_setup_timeouts(encoder, crtc_state);
1123 
1124 	/* Step (4h, 4i, 4j, 4k): Configure transcoder */
1125 	gen11_dsi_configure_transcoder(encoder, crtc_state);
1126 }
1127 
gen11_dsi_powerup_panel(struct intel_encoder * encoder)1128 static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
1129 {
1130 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1131 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1132 	struct mipi_dsi_device *dsi;
1133 	enum port port;
1134 	enum transcoder dsi_trans;
1135 	u32 tmp;
1136 	int ret;
1137 
1138 	/* set maximum return packet size */
1139 	for_each_dsi_port(port, intel_dsi->ports) {
1140 		dsi_trans = dsi_port_to_transcoder(port);
1141 
1142 		/*
1143 		 * FIXME: This uses the number of DW's currently in the payload
1144 		 * receive queue. This is probably not what we want here.
1145 		 */
1146 		tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans));
1147 		tmp &= NUMBER_RX_PLOAD_DW_MASK;
1148 		/* multiply "Number Rx Payload DW" by 4 to get max value */
1149 		tmp = tmp * 4;
1150 		dsi = intel_dsi->dsi_hosts[port]->device;
1151 		ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp);
1152 		if (ret < 0)
1153 			drm_err(&dev_priv->drm,
1154 				"error setting max return pkt size%d\n", tmp);
1155 	}
1156 
1157 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
1158 
1159 	/* ensure all panel commands dispatched before enabling transcoder */
1160 	wait_for_cmds_dispatched_to_panel(encoder);
1161 }
1162 
gen11_dsi_pre_pll_enable(struct intel_atomic_state * state,struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state,const struct drm_connector_state * conn_state)1163 static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state,
1164 				     struct intel_encoder *encoder,
1165 				     const struct intel_crtc_state *crtc_state,
1166 				     const struct drm_connector_state *conn_state)
1167 {
1168 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1169 
1170 	intel_dsi_wait_panel_power_cycle(intel_dsi);
1171 
1172 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
1173 	msleep(intel_dsi->panel_on_delay);
1174 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
1175 
1176 	/* step2: enable IO power */
1177 	gen11_dsi_enable_io_power(encoder);
1178 
1179 	/* step3: enable DSI PLL */
1180 	gen11_dsi_program_esc_clk_div(encoder, crtc_state);
1181 }
1182 
gen11_dsi_pre_enable(struct intel_atomic_state * state,struct intel_encoder * encoder,const struct intel_crtc_state * pipe_config,const struct drm_connector_state * conn_state)1183 static void gen11_dsi_pre_enable(struct intel_atomic_state *state,
1184 				 struct intel_encoder *encoder,
1185 				 const struct intel_crtc_state *pipe_config,
1186 				 const struct drm_connector_state *conn_state)
1187 {
1188 	/* step3b */
1189 	gen11_dsi_map_pll(encoder, pipe_config);
1190 
1191 	/* step4: enable DSI port and DPHY */
1192 	gen11_dsi_enable_port_and_phy(encoder, pipe_config);
1193 
1194 	/* step5: program and powerup panel */
1195 	gen11_dsi_powerup_panel(encoder);
1196 
1197 	intel_dsc_dsi_pps_write(encoder, pipe_config);
1198 
1199 	/* step6c: configure transcoder timings */
1200 	gen11_dsi_set_transcoder_timings(encoder, pipe_config);
1201 }
1202 
1203 /*
1204  * Wa_1409054076:icl,jsl,ehl
1205  * When pipe A is disabled and MIPI DSI is enabled on pipe B,
1206  * the AMT KVMR feature will incorrectly see pipe A as enabled.
1207  * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave
1208  * it set while DSI is enabled on pipe B
1209  */
icl_apply_kvmr_pipe_a_wa(struct intel_encoder * encoder,enum pipe pipe,bool enable)1210 static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder,
1211 				     enum pipe pipe, bool enable)
1212 {
1213 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1214 
1215 	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B)
1216 		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
1217 			     IGNORE_KVMR_PIPE_A,
1218 			     enable ? IGNORE_KVMR_PIPE_A : 0);
1219 }
1220 
1221 /*
1222  * Wa_16012360555:adl-p
1223  * SW will have to program the "LP to HS Wakeup Guardband"
1224  * to account for the repeaters on the HS Request/Ready
1225  * PPI signaling between the Display engine and the DPHY.
1226  */
adlp_set_lp_hs_wakeup_gb(struct intel_encoder * encoder)1227 static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
1228 {
1229 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1230 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1231 	enum port port;
1232 
1233 	if (DISPLAY_VER(i915) == 13) {
1234 		for_each_dsi_port(port, intel_dsi->ports)
1235 			intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
1236 				     TGL_DSI_CHKN_LSHS_GB_MASK,
1237 				     TGL_DSI_CHKN_LSHS_GB(4));
1238 	}
1239 }
1240 
gen11_dsi_enable(struct intel_atomic_state * state,struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state,const struct drm_connector_state * conn_state)1241 static void gen11_dsi_enable(struct intel_atomic_state *state,
1242 			     struct intel_encoder *encoder,
1243 			     const struct intel_crtc_state *crtc_state,
1244 			     const struct drm_connector_state *conn_state)
1245 {
1246 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1247 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
1248 
1249 	/* Wa_1409054076:icl,jsl,ehl */
1250 	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, true);
1251 
1252 	/* Wa_16012360555:adl-p */
1253 	adlp_set_lp_hs_wakeup_gb(encoder);
1254 
1255 	/* step6d: enable dsi transcoder */
1256 	gen11_dsi_enable_transcoder(encoder);
1257 
1258 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
1259 
1260 	/* step7: enable backlight */
1261 	intel_backlight_enable(crtc_state, conn_state);
1262 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
1263 
1264 	intel_crtc_vblank_on(crtc_state);
1265 }
1266 
gen11_dsi_disable_transcoder(struct intel_encoder * encoder)1267 static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder)
1268 {
1269 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1270 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1271 	enum port port;
1272 	enum transcoder dsi_trans;
1273 
1274 	for_each_dsi_port(port, intel_dsi->ports) {
1275 		dsi_trans = dsi_port_to_transcoder(port);
1276 
1277 		/* disable transcoder */
1278 		intel_de_rmw(dev_priv, TRANSCONF(dsi_trans), TRANSCONF_ENABLE, 0);
1279 
1280 		/* wait for transcoder to be disabled */
1281 		if (intel_de_wait_for_clear(dev_priv, TRANSCONF(dsi_trans),
1282 					    TRANSCONF_STATE_ENABLE, 50))
1283 			drm_err(&dev_priv->drm,
1284 				"DSI trancoder not disabled\n");
1285 	}
1286 }
1287 
gen11_dsi_powerdown_panel(struct intel_encoder * encoder)1288 static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder)
1289 {
1290 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1291 
1292 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
1293 
1294 	/* ensure cmds dispatched to panel */
1295 	wait_for_cmds_dispatched_to_panel(encoder);
1296 }
1297 
gen11_dsi_deconfigure_trancoder(struct intel_encoder * encoder)1298 static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
1299 {
1300 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1301 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1302 	enum port port;
1303 	enum transcoder dsi_trans;
1304 	u32 tmp;
1305 
1306 	/* disable periodic update mode */
1307 	if (is_cmd_mode(intel_dsi)) {
1308 		for_each_dsi_port(port, intel_dsi->ports)
1309 			intel_de_rmw(dev_priv, DSI_CMD_FRMCTL(port),
1310 				     DSI_PERIODIC_FRAME_UPDATE_ENABLE, 0);
1311 	}
1312 
1313 	/* put dsi link in ULPS */
1314 	for_each_dsi_port(port, intel_dsi->ports) {
1315 		dsi_trans = dsi_port_to_transcoder(port);
1316 		tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans));
1317 		tmp |= LINK_ENTER_ULPS;
1318 		tmp &= ~LINK_ULPS_TYPE_LP11;
1319 		intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp);
1320 
1321 		if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
1322 				 LINK_IN_ULPS),
1323 				10))
1324 			drm_err(&dev_priv->drm, "DSI link not in ULPS\n");
1325 	}
1326 
1327 	/* disable ddi function */
1328 	for_each_dsi_port(port, intel_dsi->ports) {
1329 		dsi_trans = dsi_port_to_transcoder(port);
1330 		intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans),
1331 			     TRANS_DDI_FUNC_ENABLE, 0);
1332 	}
1333 
1334 	/* disable port sync mode if dual link */
1335 	if (intel_dsi->dual_link) {
1336 		for_each_dsi_port(port, intel_dsi->ports) {
1337 			dsi_trans = dsi_port_to_transcoder(port);
1338 			intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL2(dsi_trans),
1339 				     PORT_SYNC_MODE_ENABLE, 0);
1340 		}
1341 	}
1342 }
1343 
gen11_dsi_disable_port(struct intel_encoder * encoder)1344 static void gen11_dsi_disable_port(struct intel_encoder *encoder)
1345 {
1346 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1347 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1348 	enum port port;
1349 
1350 	gen11_dsi_ungate_clocks(encoder);
1351 	for_each_dsi_port(port, intel_dsi->ports) {
1352 		intel_de_rmw(dev_priv, DDI_BUF_CTL(port), DDI_BUF_CTL_ENABLE, 0);
1353 
1354 		if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
1355 				 DDI_BUF_IS_IDLE),
1356 				 8))
1357 			drm_err(&dev_priv->drm,
1358 				"DDI port:%c buffer not idle\n",
1359 				port_name(port));
1360 	}
1361 	gen11_dsi_gate_clocks(encoder);
1362 }
1363 
gen11_dsi_disable_io_power(struct intel_encoder * encoder)1364 static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
1365 {
1366 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1367 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1368 	enum port port;
1369 
1370 	for_each_dsi_port(port, intel_dsi->ports) {
1371 		intel_wakeref_t wakeref;
1372 
1373 		wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]);
1374 		intel_display_power_put(dev_priv,
1375 					port == PORT_A ?
1376 					POWER_DOMAIN_PORT_DDI_IO_A :
1377 					POWER_DOMAIN_PORT_DDI_IO_B,
1378 					wakeref);
1379 	}
1380 
1381 	/* set mode to DDI */
1382 	for_each_dsi_port(port, intel_dsi->ports)
1383 		intel_de_rmw(dev_priv, ICL_DSI_IO_MODECTL(port),
1384 			     COMBO_PHY_MODE_DSI, 0);
1385 }
1386 
gen11_dsi_disable(struct intel_atomic_state * state,struct intel_encoder * encoder,const struct intel_crtc_state * old_crtc_state,const struct drm_connector_state * old_conn_state)1387 static void gen11_dsi_disable(struct intel_atomic_state *state,
1388 			      struct intel_encoder *encoder,
1389 			      const struct intel_crtc_state *old_crtc_state,
1390 			      const struct drm_connector_state *old_conn_state)
1391 {
1392 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1393 
1394 	/* step1: turn off backlight */
1395 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
1396 	intel_backlight_disable(old_conn_state);
1397 }
1398 
gen11_dsi_post_disable(struct intel_atomic_state * state,struct intel_encoder * encoder,const struct intel_crtc_state * old_crtc_state,const struct drm_connector_state * old_conn_state)1399 static void gen11_dsi_post_disable(struct intel_atomic_state *state,
1400 				   struct intel_encoder *encoder,
1401 				   const struct intel_crtc_state *old_crtc_state,
1402 				   const struct drm_connector_state *old_conn_state)
1403 {
1404 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1405 	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
1406 
1407 	intel_crtc_vblank_off(old_crtc_state);
1408 
1409 	/* step2d,e: disable transcoder and wait */
1410 	gen11_dsi_disable_transcoder(encoder);
1411 
1412 	/* Wa_1409054076:icl,jsl,ehl */
1413 	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, false);
1414 
1415 	/* step2f,g: powerdown panel */
1416 	gen11_dsi_powerdown_panel(encoder);
1417 
1418 	/* step2h,i,j: deconfig trancoder */
1419 	gen11_dsi_deconfigure_trancoder(encoder);
1420 
1421 	intel_dsc_disable(old_crtc_state);
1422 	skl_scaler_disable(old_crtc_state);
1423 
1424 	/* step3: disable port */
1425 	gen11_dsi_disable_port(encoder);
1426 
1427 	gen11_dsi_config_util_pin(encoder, false);
1428 
1429 	/* step4: disable IO power */
1430 	gen11_dsi_disable_io_power(encoder);
1431 
1432 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
1433 
1434 	msleep(intel_dsi->panel_off_delay);
1435 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
1436 
1437 	intel_dsi->panel_power_off_time = ktime_get_boottime();
1438 }
1439 
gen11_dsi_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)1440 static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector,
1441 						 struct drm_display_mode *mode)
1442 {
1443 	struct drm_i915_private *i915 = to_i915(connector->dev);
1444 	enum drm_mode_status status;
1445 
1446 	status = intel_cpu_transcoder_mode_valid(i915, mode);
1447 	if (status != MODE_OK)
1448 		return status;
1449 
1450 	/* FIXME: DSC? */
1451 	return intel_dsi_mode_valid(connector, mode);
1452 }
1453 
gen11_dsi_get_timings(struct intel_encoder * encoder,struct intel_crtc_state * pipe_config)1454 static void gen11_dsi_get_timings(struct intel_encoder *encoder,
1455 				  struct intel_crtc_state *pipe_config)
1456 {
1457 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1458 	struct drm_display_mode *adjusted_mode =
1459 					&pipe_config->hw.adjusted_mode;
1460 
1461 	if (pipe_config->dsc.compressed_bpp) {
1462 		int div = pipe_config->dsc.compressed_bpp;
1463 		int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
1464 
1465 		adjusted_mode->crtc_htotal =
1466 			DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
1467 		adjusted_mode->crtc_hsync_start =
1468 			DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
1469 		adjusted_mode->crtc_hsync_end =
1470 			DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
1471 	}
1472 
1473 	if (intel_dsi->dual_link) {
1474 		adjusted_mode->crtc_hdisplay *= 2;
1475 		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
1476 			adjusted_mode->crtc_hdisplay -=
1477 						intel_dsi->pixel_overlap;
1478 		adjusted_mode->crtc_htotal *= 2;
1479 	}
1480 	adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay;
1481 	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal;
1482 
1483 	if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) {
1484 		if (intel_dsi->dual_link) {
1485 			adjusted_mode->crtc_hsync_start *= 2;
1486 			adjusted_mode->crtc_hsync_end *= 2;
1487 		}
1488 	}
1489 	adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay;
1490 	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal;
1491 }
1492 
gen11_dsi_is_periodic_cmd_mode(struct intel_dsi * intel_dsi)1493 static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi)
1494 {
1495 	struct drm_device *dev = intel_dsi->base.base.dev;
1496 	struct drm_i915_private *dev_priv = to_i915(dev);
1497 	enum transcoder dsi_trans;
1498 	u32 val;
1499 
1500 	if (intel_dsi->ports == BIT(PORT_B))
1501 		dsi_trans = TRANSCODER_DSI_1;
1502 	else
1503 		dsi_trans = TRANSCODER_DSI_0;
1504 
1505 	val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
1506 	return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE);
1507 }
1508 
gen11_dsi_get_cmd_mode_config(struct intel_dsi * intel_dsi,struct intel_crtc_state * pipe_config)1509 static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi,
1510 					  struct intel_crtc_state *pipe_config)
1511 {
1512 	if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
1513 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 |
1514 					    I915_MODE_FLAG_DSI_USE_TE0;
1515 	else if (intel_dsi->ports == BIT(PORT_B))
1516 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1;
1517 	else
1518 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0;
1519 }
1520 
gen11_dsi_get_config(struct intel_encoder * encoder,struct intel_crtc_state * pipe_config)1521 static void gen11_dsi_get_config(struct intel_encoder *encoder,
1522 				 struct intel_crtc_state *pipe_config)
1523 {
1524 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
1525 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1526 
1527 	intel_ddi_get_clock(encoder, pipe_config, icl_ddi_combo_get_pll(encoder));
1528 
1529 	pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk;
1530 	if (intel_dsi->dual_link)
1531 		pipe_config->hw.adjusted_mode.crtc_clock *= 2;
1532 
1533 	gen11_dsi_get_timings(encoder, pipe_config);
1534 	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
1535 	pipe_config->pipe_bpp = bdw_get_pipe_misc_bpp(crtc);
1536 
1537 	/* Get the details on which TE should be enabled */
1538 	if (is_cmd_mode(intel_dsi))
1539 		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
1540 
1541 	if (gen11_dsi_is_periodic_cmd_mode(intel_dsi))
1542 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
1543 }
1544 
gen11_dsi_sync_state(struct intel_encoder * encoder,const struct intel_crtc_state * crtc_state)1545 static void gen11_dsi_sync_state(struct intel_encoder *encoder,
1546 				 const struct intel_crtc_state *crtc_state)
1547 {
1548 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1549 	struct intel_crtc *intel_crtc;
1550 	enum pipe pipe;
1551 
1552 	if (!crtc_state)
1553 		return;
1554 
1555 	intel_crtc = to_intel_crtc(crtc_state->uapi.crtc);
1556 	pipe = intel_crtc->pipe;
1557 
1558 	/* wa verify 1409054076:icl,jsl,ehl */
1559 	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B &&
1560 	    !(intel_de_read(dev_priv, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A))
1561 		drm_dbg_kms(&dev_priv->drm,
1562 			    "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n",
1563 			    encoder->base.base.id,
1564 			    encoder->base.name);
1565 }
1566 
gen11_dsi_dsc_compute_config(struct intel_encoder * encoder,struct intel_crtc_state * crtc_state)1567 static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder,
1568 					struct intel_crtc_state *crtc_state)
1569 {
1570 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1571 	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
1572 	int dsc_max_bpc = DISPLAY_VER(dev_priv) >= 12 ? 12 : 10;
1573 	bool use_dsc;
1574 	int ret;
1575 
1576 	use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc);
1577 	if (!use_dsc)
1578 		return 0;
1579 
1580 	if (crtc_state->pipe_bpp < 8 * 3)
1581 		return -EINVAL;
1582 
1583 	/* FIXME: split only when necessary */
1584 	if (crtc_state->dsc.slice_count > 1)
1585 		crtc_state->dsc.dsc_split = true;
1586 
1587 	/* FIXME: initialize from VBT */
1588 	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
1589 
1590 	vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay;
1591 
1592 	ret = intel_dsc_compute_params(crtc_state);
1593 	if (ret)
1594 		return ret;
1595 
1596 	/* DSI specific sanity checks on the common code */
1597 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable);
1598 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422);
1599 	drm_WARN_ON(&dev_priv->drm,
1600 		    vdsc_cfg->pic_width % vdsc_cfg->slice_width);
1601 	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8);
1602 	drm_WARN_ON(&dev_priv->drm,
1603 		    vdsc_cfg->pic_height % vdsc_cfg->slice_height);
1604 
1605 	ret = drm_dsc_compute_rc_parameters(vdsc_cfg);
1606 	if (ret)
1607 		return ret;
1608 
1609 	crtc_state->dsc.compression_enable = true;
1610 
1611 	return 0;
1612 }
1613 
gen11_dsi_compute_config(struct intel_encoder * encoder,struct intel_crtc_state * pipe_config,struct drm_connector_state * conn_state)1614 static int gen11_dsi_compute_config(struct intel_encoder *encoder,
1615 				    struct intel_crtc_state *pipe_config,
1616 				    struct drm_connector_state *conn_state)
1617 {
1618 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1619 	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
1620 						   base);
1621 	struct intel_connector *intel_connector = intel_dsi->attached_connector;
1622 	struct drm_display_mode *adjusted_mode =
1623 		&pipe_config->hw.adjusted_mode;
1624 	int ret;
1625 
1626 	pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
1627 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
1628 
1629 	ret = intel_panel_compute_config(intel_connector, adjusted_mode);
1630 	if (ret)
1631 		return ret;
1632 
1633 	ret = intel_panel_fitting(pipe_config, conn_state);
1634 	if (ret)
1635 		return ret;
1636 
1637 	adjusted_mode->flags = 0;
1638 
1639 	/* Dual link goes to trancoder DSI'0' */
1640 	if (intel_dsi->ports == BIT(PORT_B))
1641 		pipe_config->cpu_transcoder = TRANSCODER_DSI_1;
1642 	else
1643 		pipe_config->cpu_transcoder = TRANSCODER_DSI_0;
1644 
1645 	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888)
1646 		pipe_config->pipe_bpp = 24;
1647 	else
1648 		pipe_config->pipe_bpp = 18;
1649 
1650 	pipe_config->clock_set = true;
1651 
1652 	if (gen11_dsi_dsc_compute_config(encoder, pipe_config))
1653 		drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n");
1654 
1655 	pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5;
1656 
1657 	/*
1658 	 * In case of TE GATE cmd mode, we
1659 	 * receive TE from the slave if
1660 	 * dual link is enabled
1661 	 */
1662 	if (is_cmd_mode(intel_dsi))
1663 		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
1664 
1665 	return 0;
1666 }
1667 
gen11_dsi_get_power_domains(struct intel_encoder * encoder,struct intel_crtc_state * crtc_state)1668 static void gen11_dsi_get_power_domains(struct intel_encoder *encoder,
1669 					struct intel_crtc_state *crtc_state)
1670 {
1671 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1672 
1673 	get_dsi_io_power_domains(i915,
1674 				 enc_to_intel_dsi(encoder));
1675 }
1676 
gen11_dsi_get_hw_state(struct intel_encoder * encoder,enum pipe * pipe)1677 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
1678 				   enum pipe *pipe)
1679 {
1680 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1681 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1682 	enum transcoder dsi_trans;
1683 	intel_wakeref_t wakeref;
1684 	enum port port;
1685 	bool ret = false;
1686 	u32 tmp;
1687 
1688 	wakeref = intel_display_power_get_if_enabled(dev_priv,
1689 						     encoder->power_domain);
1690 	if (!wakeref)
1691 		return false;
1692 
1693 	for_each_dsi_port(port, intel_dsi->ports) {
1694 		dsi_trans = dsi_port_to_transcoder(port);
1695 		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
1696 		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1697 		case TRANS_DDI_EDP_INPUT_A_ON:
1698 			*pipe = PIPE_A;
1699 			break;
1700 		case TRANS_DDI_EDP_INPUT_B_ONOFF:
1701 			*pipe = PIPE_B;
1702 			break;
1703 		case TRANS_DDI_EDP_INPUT_C_ONOFF:
1704 			*pipe = PIPE_C;
1705 			break;
1706 		case TRANS_DDI_EDP_INPUT_D_ONOFF:
1707 			*pipe = PIPE_D;
1708 			break;
1709 		default:
1710 			drm_err(&dev_priv->drm, "Invalid PIPE input\n");
1711 			goto out;
1712 		}
1713 
1714 		tmp = intel_de_read(dev_priv, TRANSCONF(dsi_trans));
1715 		ret = tmp & TRANSCONF_ENABLE;
1716 	}
1717 out:
1718 	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
1719 	return ret;
1720 }
1721 
gen11_dsi_initial_fastset_check(struct intel_encoder * encoder,struct intel_crtc_state * crtc_state)1722 static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder,
1723 					    struct intel_crtc_state *crtc_state)
1724 {
1725 	if (crtc_state->dsc.compression_enable) {
1726 		drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n");
1727 		crtc_state->uapi.mode_changed = true;
1728 
1729 		return false;
1730 	}
1731 
1732 	return true;
1733 }
1734 
gen11_dsi_encoder_destroy(struct drm_encoder * encoder)1735 static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
1736 {
1737 	intel_encoder_destroy(encoder);
1738 }
1739 
1740 static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = {
1741 	.destroy = gen11_dsi_encoder_destroy,
1742 };
1743 
1744 static const struct drm_connector_funcs gen11_dsi_connector_funcs = {
1745 	.detect = intel_panel_detect,
1746 	.late_register = intel_connector_register,
1747 	.early_unregister = intel_connector_unregister,
1748 	.destroy = intel_connector_destroy,
1749 	.fill_modes = drm_helper_probe_single_connector_modes,
1750 	.atomic_get_property = intel_digital_connector_atomic_get_property,
1751 	.atomic_set_property = intel_digital_connector_atomic_set_property,
1752 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1753 	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
1754 };
1755 
1756 static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = {
1757 	.get_modes = intel_dsi_get_modes,
1758 	.mode_valid = gen11_dsi_mode_valid,
1759 	.atomic_check = intel_digital_connector_atomic_check,
1760 };
1761 
gen11_dsi_host_attach(struct mipi_dsi_host * host,struct mipi_dsi_device * dsi)1762 static int gen11_dsi_host_attach(struct mipi_dsi_host *host,
1763 				 struct mipi_dsi_device *dsi)
1764 {
1765 	return 0;
1766 }
1767 
gen11_dsi_host_detach(struct mipi_dsi_host * host,struct mipi_dsi_device * dsi)1768 static int gen11_dsi_host_detach(struct mipi_dsi_host *host,
1769 				 struct mipi_dsi_device *dsi)
1770 {
1771 	return 0;
1772 }
1773 
gen11_dsi_host_transfer(struct mipi_dsi_host * host,const struct mipi_dsi_msg * msg)1774 static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host,
1775 				       const struct mipi_dsi_msg *msg)
1776 {
1777 	struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host);
1778 	struct mipi_dsi_packet dsi_pkt;
1779 	ssize_t ret;
1780 	bool enable_lpdt = false;
1781 
1782 	ret = mipi_dsi_create_packet(&dsi_pkt, msg);
1783 	if (ret < 0)
1784 		return ret;
1785 
1786 	if (msg->flags & MIPI_DSI_MSG_USE_LPM)
1787 		enable_lpdt = true;
1788 
1789 	/* only long packet contains payload */
1790 	if (mipi_dsi_packet_format_is_long(msg->type)) {
1791 		ret = dsi_send_pkt_payld(intel_dsi_host, &dsi_pkt);
1792 		if (ret < 0)
1793 			return ret;
1794 	}
1795 
1796 	/* send packet header */
1797 	ret  = dsi_send_pkt_hdr(intel_dsi_host, &dsi_pkt, enable_lpdt);
1798 	if (ret < 0)
1799 		return ret;
1800 
1801 	//TODO: add payload receive code if needed
1802 
1803 	ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length;
1804 
1805 	return ret;
1806 }
1807 
1808 static const struct mipi_dsi_host_ops gen11_dsi_host_ops = {
1809 	.attach = gen11_dsi_host_attach,
1810 	.detach = gen11_dsi_host_detach,
1811 	.transfer = gen11_dsi_host_transfer,
1812 };
1813 
1814 #define ICL_PREPARE_CNT_MAX	0x7
1815 #define ICL_CLK_ZERO_CNT_MAX	0xf
1816 #define ICL_TRAIL_CNT_MAX	0x7
1817 #define ICL_TCLK_PRE_CNT_MAX	0x3
1818 #define ICL_TCLK_POST_CNT_MAX	0x7
1819 #define ICL_HS_ZERO_CNT_MAX	0xf
1820 #define ICL_EXIT_ZERO_CNT_MAX	0x7
1821 
icl_dphy_param_init(struct intel_dsi * intel_dsi)1822 static void icl_dphy_param_init(struct intel_dsi *intel_dsi)
1823 {
1824 	struct drm_device *dev = intel_dsi->base.base.dev;
1825 	struct drm_i915_private *dev_priv = to_i915(dev);
1826 	struct intel_connector *connector = intel_dsi->attached_connector;
1827 	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
1828 	u32 tlpx_ns;
1829 	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
1830 	u32 ths_prepare_ns, tclk_trail_ns;
1831 	u32 hs_zero_cnt;
1832 	u32 tclk_pre_cnt, tclk_post_cnt;
1833 
1834 	tlpx_ns = intel_dsi_tlpx_ns(intel_dsi);
1835 
1836 	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);
1837 	ths_prepare_ns = max(mipi_config->ths_prepare,
1838 			     mipi_config->tclk_prepare);
1839 
1840 	/*
1841 	 * prepare cnt in escape clocks
1842 	 * this field represents a hexadecimal value with a precision
1843 	 * of 1.2 – i.e. the most significant bit is the integer
1844 	 * and the least significant 2 bits are fraction bits.
1845 	 * so, the field can represent a range of 0.25 to 1.75
1846 	 */
1847 	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns);
1848 	if (prepare_cnt > ICL_PREPARE_CNT_MAX) {
1849 		drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n",
1850 			    prepare_cnt);
1851 		prepare_cnt = ICL_PREPARE_CNT_MAX;
1852 	}
1853 
1854 	/* clk zero count in escape clocks */
1855 	clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero -
1856 				    ths_prepare_ns, tlpx_ns);
1857 	if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) {
1858 		drm_dbg_kms(&dev_priv->drm,
1859 			    "clk_zero_cnt out of range (%d)\n", clk_zero_cnt);
1860 		clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX;
1861 	}
1862 
1863 	/* trail cnt in escape clocks*/
1864 	trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns);
1865 	if (trail_cnt > ICL_TRAIL_CNT_MAX) {
1866 		drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n",
1867 			    trail_cnt);
1868 		trail_cnt = ICL_TRAIL_CNT_MAX;
1869 	}
1870 
1871 	/* tclk pre count in escape clocks */
1872 	tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns);
1873 	if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) {
1874 		drm_dbg_kms(&dev_priv->drm,
1875 			    "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt);
1876 		tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX;
1877 	}
1878 
1879 	/* tclk post count in escape clocks */
1880 	tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns);
1881 	if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) {
1882 		drm_dbg_kms(&dev_priv->drm,
1883 			    "tclk_post_cnt out of range (%d)\n",
1884 			    tclk_post_cnt);
1885 		tclk_post_cnt = ICL_TCLK_POST_CNT_MAX;
1886 	}
1887 
1888 	/* hs zero cnt in escape clocks */
1889 	hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero -
1890 				   ths_prepare_ns, tlpx_ns);
1891 	if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) {
1892 		drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n",
1893 			    hs_zero_cnt);
1894 		hs_zero_cnt = ICL_HS_ZERO_CNT_MAX;
1895 	}
1896 
1897 	/* hs exit zero cnt in escape clocks */
1898 	exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns);
1899 	if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) {
1900 		drm_dbg_kms(&dev_priv->drm,
1901 			    "exit_zero_cnt out of range (%d)\n",
1902 			    exit_zero_cnt);
1903 		exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX;
1904 	}
1905 
1906 	/* clock lane dphy timings */
1907 	intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE |
1908 			       CLK_PREPARE(prepare_cnt) |
1909 			       CLK_ZERO_OVERRIDE |
1910 			       CLK_ZERO(clk_zero_cnt) |
1911 			       CLK_PRE_OVERRIDE |
1912 			       CLK_PRE(tclk_pre_cnt) |
1913 			       CLK_POST_OVERRIDE |
1914 			       CLK_POST(tclk_post_cnt) |
1915 			       CLK_TRAIL_OVERRIDE |
1916 			       CLK_TRAIL(trail_cnt));
1917 
1918 	/* data lanes dphy timings */
1919 	intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE |
1920 					 HS_PREPARE(prepare_cnt) |
1921 					 HS_ZERO_OVERRIDE |
1922 					 HS_ZERO(hs_zero_cnt) |
1923 					 HS_TRAIL_OVERRIDE |
1924 					 HS_TRAIL(trail_cnt) |
1925 					 HS_EXIT_OVERRIDE |
1926 					 HS_EXIT(exit_zero_cnt));
1927 
1928 	intel_dsi_log_params(intel_dsi);
1929 }
1930 
icl_dsi_add_properties(struct intel_connector * connector)1931 static void icl_dsi_add_properties(struct intel_connector *connector)
1932 {
1933 	const struct drm_display_mode *fixed_mode =
1934 		intel_panel_preferred_fixed_mode(connector);
1935 
1936 	intel_attach_scaling_mode_property(&connector->base);
1937 
1938 	drm_connector_set_panel_orientation_with_quirk(&connector->base,
1939 						       intel_dsi_get_panel_orientation(connector),
1940 						       fixed_mode->hdisplay,
1941 						       fixed_mode->vdisplay);
1942 }
1943 
icl_dsi_init(struct drm_i915_private * dev_priv,const struct intel_bios_encoder_data * devdata)1944 void icl_dsi_init(struct drm_i915_private *dev_priv,
1945 		  const struct intel_bios_encoder_data *devdata)
1946 {
1947 	struct intel_dsi *intel_dsi;
1948 	struct intel_encoder *encoder;
1949 	struct intel_connector *intel_connector;
1950 	struct drm_connector *connector;
1951 	enum port port;
1952 
1953 	port = intel_bios_encoder_port(devdata);
1954 	if (port == PORT_NONE)
1955 		return;
1956 
1957 	intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
1958 	if (!intel_dsi)
1959 		return;
1960 
1961 	intel_connector = intel_connector_alloc();
1962 	if (!intel_connector) {
1963 		kfree(intel_dsi);
1964 		return;
1965 	}
1966 
1967 	encoder = &intel_dsi->base;
1968 	intel_dsi->attached_connector = intel_connector;
1969 	connector = &intel_connector->base;
1970 
1971 	encoder->devdata = devdata;
1972 
1973 	/* register DSI encoder with DRM subsystem */
1974 	drm_encoder_init(&dev_priv->drm, &encoder->base, &gen11_dsi_encoder_funcs,
1975 			 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port));
1976 
1977 	encoder->pre_pll_enable = gen11_dsi_pre_pll_enable;
1978 	encoder->pre_enable = gen11_dsi_pre_enable;
1979 	encoder->enable = gen11_dsi_enable;
1980 	encoder->disable = gen11_dsi_disable;
1981 	encoder->post_disable = gen11_dsi_post_disable;
1982 	encoder->port = port;
1983 	encoder->get_config = gen11_dsi_get_config;
1984 	encoder->sync_state = gen11_dsi_sync_state;
1985 	encoder->update_pipe = intel_backlight_update;
1986 	encoder->compute_config = gen11_dsi_compute_config;
1987 	encoder->get_hw_state = gen11_dsi_get_hw_state;
1988 	encoder->initial_fastset_check = gen11_dsi_initial_fastset_check;
1989 	encoder->type = INTEL_OUTPUT_DSI;
1990 	encoder->cloneable = 0;
1991 	encoder->pipe_mask = ~0;
1992 	encoder->power_domain = POWER_DOMAIN_PORT_DSI;
1993 	encoder->get_power_domains = gen11_dsi_get_power_domains;
1994 	encoder->disable_clock = gen11_dsi_gate_clocks;
1995 	encoder->is_clock_enabled = gen11_dsi_is_clock_enabled;
1996 	encoder->shutdown = intel_dsi_shutdown;
1997 
1998 	/* register DSI connector with DRM subsystem */
1999 	drm_connector_init(&dev_priv->drm, connector, &gen11_dsi_connector_funcs,
2000 			   DRM_MODE_CONNECTOR_DSI);
2001 	drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs);
2002 	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
2003 	intel_connector->get_hw_state = intel_connector_get_hw_state;
2004 
2005 	/* attach connector to encoder */
2006 	intel_connector_attach_encoder(intel_connector, encoder);
2007 
2008 	intel_dsi->panel_power_off_time = ktime_get_boottime();
2009 
2010 	intel_bios_init_panel_late(dev_priv, &intel_connector->panel, encoder->devdata, NULL);
2011 
2012 	mutex_lock(&dev_priv->drm.mode_config.mutex);
2013 	intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
2014 	mutex_unlock(&dev_priv->drm.mode_config.mutex);
2015 
2016 	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
2017 		drm_err(&dev_priv->drm, "DSI fixed mode info missing\n");
2018 		goto err;
2019 	}
2020 
2021 	intel_panel_init(intel_connector, NULL);
2022 
2023 	intel_backlight_setup(intel_connector, INVALID_PIPE);
2024 
2025 	if (intel_connector->panel.vbt.dsi.config->dual_link)
2026 		intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B);
2027 	else
2028 		intel_dsi->ports = BIT(port);
2029 
2030 	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.bl_ports & ~intel_dsi->ports))
2031 		intel_connector->panel.vbt.dsi.bl_ports &= intel_dsi->ports;
2032 
2033 	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.cabc_ports & ~intel_dsi->ports))
2034 		intel_connector->panel.vbt.dsi.cabc_ports &= intel_dsi->ports;
2035 
2036 	for_each_dsi_port(port, intel_dsi->ports) {
2037 		struct intel_dsi_host *host;
2038 
2039 		host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port);
2040 		if (!host)
2041 			goto err;
2042 
2043 		intel_dsi->dsi_hosts[port] = host;
2044 	}
2045 
2046 	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
2047 		drm_dbg_kms(&dev_priv->drm, "no device found\n");
2048 		goto err;
2049 	}
2050 
2051 	icl_dphy_param_init(intel_dsi);
2052 
2053 	icl_dsi_add_properties(intel_connector);
2054 	return;
2055 
2056 err:
2057 	drm_connector_cleanup(connector);
2058 	drm_encoder_cleanup(&encoder->base);
2059 	kfree(intel_dsi);
2060 	kfree(intel_connector);
2061 }
2062