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/drm_atomic_helper.h>
  29#include <drm/drm_mipi_dsi.h>
  30
  31#include "intel_atomic.h"
  32#include "intel_combo_phy.h"
  33#include "intel_connector.h"
  34#include "intel_crtc.h"
  35#include "intel_ddi.h"
  36#include "intel_de.h"
  37#include "intel_dsi.h"
  38#include "intel_panel.h"
  39#include "intel_vdsc.h"
  40#include "skl_scaler.h"
  41#include "skl_universal_plane.h"
  42
  43static int header_credits_available(struct drm_i915_private *dev_priv,
  44				    enum transcoder dsi_trans)
  45{
  46	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK)
  47		>> FREE_HEADER_CREDIT_SHIFT;
  48}
  49
  50static int payload_credits_available(struct drm_i915_private *dev_priv,
  51				     enum transcoder dsi_trans)
  52{
  53	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK)
  54		>> FREE_PLOAD_CREDIT_SHIFT;
  55}
  56
  57static void wait_for_header_credits(struct drm_i915_private *dev_priv,
  58				    enum transcoder dsi_trans)
  59{
  60	if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >=
  61			MAX_HEADER_CREDIT, 100))
  62		drm_err(&dev_priv->drm, "DSI header credits not released\n");
  63}
  64
  65static void wait_for_payload_credits(struct drm_i915_private *dev_priv,
  66				     enum transcoder dsi_trans)
  67{
  68	if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >=
  69			MAX_PLOAD_CREDIT, 100))
  70		drm_err(&dev_priv->drm, "DSI payload credits not released\n");
  71}
  72
  73static enum transcoder dsi_port_to_transcoder(enum port port)
  74{
  75	if (port == PORT_A)
  76		return TRANSCODER_DSI_0;
  77	else
  78		return TRANSCODER_DSI_1;
  79}
  80
  81static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder)
  82{
  83	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
  84	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
  85	struct mipi_dsi_device *dsi;
  86	enum port port;
  87	enum transcoder dsi_trans;
  88	int ret;
  89
  90	/* wait for header/payload credits to be released */
  91	for_each_dsi_port(port, intel_dsi->ports) {
  92		dsi_trans = dsi_port_to_transcoder(port);
  93		wait_for_header_credits(dev_priv, dsi_trans);
  94		wait_for_payload_credits(dev_priv, dsi_trans);
  95	}
  96
  97	/* send nop DCS command */
  98	for_each_dsi_port(port, intel_dsi->ports) {
  99		dsi = intel_dsi->dsi_hosts[port]->device;
 100		dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 101		dsi->channel = 0;
 102		ret = mipi_dsi_dcs_nop(dsi);
 103		if (ret < 0)
 104			drm_err(&dev_priv->drm,
 105				"error sending DCS NOP command\n");
 106	}
 107
 108	/* wait for header credits to be released */
 109	for_each_dsi_port(port, intel_dsi->ports) {
 110		dsi_trans = dsi_port_to_transcoder(port);
 111		wait_for_header_credits(dev_priv, dsi_trans);
 112	}
 113
 114	/* wait for LP TX in progress bit to be cleared */
 115	for_each_dsi_port(port, intel_dsi->ports) {
 116		dsi_trans = dsi_port_to_transcoder(port);
 117		if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
 118				  LPTX_IN_PROGRESS), 20))
 119			drm_err(&dev_priv->drm, "LPTX bit not cleared\n");
 120	}
 121}
 122
 123static bool add_payld_to_queue(struct intel_dsi_host *host, const u8 *data,
 124			       u32 len)
 125{
 126	struct intel_dsi *intel_dsi = host->intel_dsi;
 127	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
 128	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
 129	int free_credits;
 130	int i, j;
 131
 132	for (i = 0; i < len; i += 4) {
 133		u32 tmp = 0;
 134
 135		free_credits = payload_credits_available(dev_priv, dsi_trans);
 136		if (free_credits < 1) {
 137			drm_err(&dev_priv->drm,
 138				"Payload credit not available\n");
 139			return false;
 140		}
 141
 142		for (j = 0; j < min_t(u32, len - i, 4); j++)
 143			tmp |= *data++ << 8 * j;
 144
 145		intel_de_write(dev_priv, DSI_CMD_TXPYLD(dsi_trans), tmp);
 146	}
 147
 148	return true;
 149}
 150
 151static int dsi_send_pkt_hdr(struct intel_dsi_host *host,
 152			    struct mipi_dsi_packet pkt, bool enable_lpdt)
 153{
 154	struct intel_dsi *intel_dsi = host->intel_dsi;
 155	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
 156	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
 157	u32 tmp;
 158	int free_credits;
 159
 160	/* check if header credit available */
 161	free_credits = header_credits_available(dev_priv, dsi_trans);
 162	if (free_credits < 1) {
 163		drm_err(&dev_priv->drm,
 164			"send pkt header failed, not enough hdr credits\n");
 165		return -1;
 166	}
 167
 168	tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans));
 169
 170	if (pkt.payload)
 171		tmp |= PAYLOAD_PRESENT;
 172	else
 173		tmp &= ~PAYLOAD_PRESENT;
 174
 175	tmp &= ~VBLANK_FENCE;
 176
 177	if (enable_lpdt)
 178		tmp |= LP_DATA_TRANSFER;
 179
 180	tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK);
 181	tmp |= ((pkt.header[0] & VC_MASK) << VC_SHIFT);
 182	tmp |= ((pkt.header[0] & DT_MASK) << DT_SHIFT);
 183	tmp |= (pkt.header[1] << PARAM_WC_LOWER_SHIFT);
 184	tmp |= (pkt.header[2] << PARAM_WC_UPPER_SHIFT);
 185	intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp);
 186
 187	return 0;
 188}
 189
 190static int dsi_send_pkt_payld(struct intel_dsi_host *host,
 191			      struct mipi_dsi_packet pkt)
 192{
 193	struct intel_dsi *intel_dsi = host->intel_dsi;
 194	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
 195
 196	/* payload queue can accept *256 bytes*, check limit */
 197	if (pkt.payload_length > MAX_PLOAD_CREDIT * 4) {
 198		drm_err(&i915->drm, "payload size exceeds max queue limit\n");
 199		return -1;
 200	}
 201
 202	/* load data into command payload queue */
 203	if (!add_payld_to_queue(host, pkt.payload,
 204				pkt.payload_length)) {
 205		drm_err(&i915->drm, "adding payload to queue failed\n");
 206		return -1;
 207	}
 208
 209	return 0;
 210}
 211
 212void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
 213{
 214	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 215	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 216	u32 tmp, mode_flags;
 217	enum port port;
 218
 219	mode_flags = crtc_state->mode_flags;
 220
 221	/*
 222	 * case 1 also covers dual link
 223	 * In case of dual link, frame update should be set on
 224	 * DSI_0
 225	 */
 226	if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0)
 227		port = PORT_A;
 228	else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1)
 229		port = PORT_B;
 230	else
 231		return;
 232
 233	tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
 234	tmp |= DSI_FRAME_UPDATE_REQUEST;
 235	intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
 236}
 237
 238static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
 239{
 240	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 241	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 242	enum phy phy;
 243	u32 tmp;
 244	int lane;
 245
 246	for_each_dsi_phy(phy, intel_dsi->phys) {
 247		/*
 248		 * Program voltage swing and pre-emphasis level values as per
 249		 * table in BSPEC under DDI buffer programing
 250		 */
 251		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(phy));
 252		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
 253		tmp |= SCALING_MODE_SEL(0x2);
 254		tmp |= TAP2_DISABLE | TAP3_DISABLE;
 255		tmp |= RTERM_SELECT(0x6);
 256		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
 257
 258		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
 259		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
 260		tmp |= SCALING_MODE_SEL(0x2);
 261		tmp |= TAP2_DISABLE | TAP3_DISABLE;
 262		tmp |= RTERM_SELECT(0x6);
 263		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
 264
 265		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN0(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_GRP(phy), tmp);
 272
 273		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
 274		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
 275			 RCOMP_SCALAR_MASK);
 276		tmp |= SWING_SEL_UPPER(0x2);
 277		tmp |= SWING_SEL_LOWER(0x2);
 278		tmp |= RCOMP_SCALAR(0x98);
 279		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
 280
 281		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
 282		tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
 283			 CURSOR_COEFF_MASK);
 284		tmp |= POST_CURSOR_1(0x0);
 285		tmp |= POST_CURSOR_2(0x0);
 286		tmp |= CURSOR_COEFF(0x3f);
 287		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
 288
 289		for (lane = 0; lane <= 3; lane++) {
 290			/* Bspec: must not use GRP register for write */
 291			tmp = intel_de_read(dev_priv,
 292					    ICL_PORT_TX_DW4_LN(lane, phy));
 293			tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
 294				 CURSOR_COEFF_MASK);
 295			tmp |= POST_CURSOR_1(0x0);
 296			tmp |= POST_CURSOR_2(0x0);
 297			tmp |= CURSOR_COEFF(0x3f);
 298			intel_de_write(dev_priv,
 299				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
 300		}
 301	}
 302}
 303
 304static void configure_dual_link_mode(struct intel_encoder *encoder,
 305				     const struct intel_crtc_state *pipe_config)
 306{
 307	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 308	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 309	u32 dss_ctl1;
 310
 311	dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1);
 312	dss_ctl1 |= SPLITTER_ENABLE;
 313	dss_ctl1 &= ~OVERLAP_PIXELS_MASK;
 314	dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap);
 315
 316	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
 317		const struct drm_display_mode *adjusted_mode =
 318					&pipe_config->hw.adjusted_mode;
 319		u32 dss_ctl2;
 320		u16 hactive = adjusted_mode->crtc_hdisplay;
 321		u16 dl_buffer_depth;
 322
 323		dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE;
 324		dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap;
 325
 326		if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH)
 327			drm_err(&dev_priv->drm,
 328				"DL buffer depth exceed max value\n");
 329
 330		dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK;
 331		dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
 332		dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2);
 333		dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK;
 334		dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
 335		intel_de_write(dev_priv, DSS_CTL2, dss_ctl2);
 336	} else {
 337		/* Interleave */
 338		dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE;
 339	}
 340
 341	intel_de_write(dev_priv, DSS_CTL1, dss_ctl1);
 342}
 343
 344/* aka DSI 8X clock */
 345static int afe_clk(struct intel_encoder *encoder,
 346		   const struct intel_crtc_state *crtc_state)
 347{
 348	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 349	int bpp;
 350
 351	if (crtc_state->dsc.compression_enable)
 352		bpp = crtc_state->dsc.compressed_bpp;
 353	else
 354		bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
 355
 356	return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count);
 357}
 358
 359static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder,
 360					  const struct intel_crtc_state *crtc_state)
 361{
 362	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 363	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 364	enum port port;
 365	int afe_clk_khz;
 366	int theo_word_clk, act_word_clk;
 367	u32 esc_clk_div_m, esc_clk_div_m_phy;
 368
 369	afe_clk_khz = afe_clk(encoder, crtc_state);
 370
 371	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
 372		theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK);
 373		act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2);
 374		esc_clk_div_m = act_word_clk * 8;
 375		esc_clk_div_m_phy = (act_word_clk - 1) / 2;
 376	} else {
 377		esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK);
 378	}
 379
 380	for_each_dsi_port(port, intel_dsi->ports) {
 381		intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port),
 382			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
 383		intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port));
 384	}
 385
 386	for_each_dsi_port(port, intel_dsi->ports) {
 387		intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port),
 388			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
 389		intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port));
 390	}
 391
 392	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
 393		for_each_dsi_port(port, intel_dsi->ports) {
 394			intel_de_write(dev_priv, ADL_MIPIO_DW(port, 8),
 395				       esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY);
 396			intel_de_posting_read(dev_priv, ADL_MIPIO_DW(port, 8));
 397		}
 398	}
 399}
 400
 401static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv,
 402				     struct intel_dsi *intel_dsi)
 403{
 404	enum port port;
 405
 406	for_each_dsi_port(port, intel_dsi->ports) {
 407		drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]);
 408		intel_dsi->io_wakeref[port] =
 409			intel_display_power_get(dev_priv,
 410						port == PORT_A ?
 411						POWER_DOMAIN_PORT_DDI_A_IO :
 412						POWER_DOMAIN_PORT_DDI_B_IO);
 413	}
 414}
 415
 416static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
 417{
 418	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 419	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 420	enum port port;
 421	u32 tmp;
 422
 423	for_each_dsi_port(port, intel_dsi->ports) {
 424		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
 425		tmp |= COMBO_PHY_MODE_DSI;
 426		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
 427	}
 428
 429	get_dsi_io_power_domains(dev_priv, intel_dsi);
 430}
 431
 432static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder)
 433{
 434	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 435	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 436	enum phy phy;
 437
 438	for_each_dsi_phy(phy, intel_dsi->phys)
 439		intel_combo_phy_power_up_lanes(dev_priv, phy, true,
 440					       intel_dsi->lane_count, false);
 441}
 442
 443static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
 444{
 445	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 446	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 447	enum phy phy;
 448	u32 tmp;
 449	int lane;
 450
 451	/* Step 4b(i) set loadgen select for transmit and aux lanes */
 452	for_each_dsi_phy(phy, intel_dsi->phys) {
 453		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
 454		tmp &= ~LOADGEN_SELECT;
 455		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
 456		for (lane = 0; lane <= 3; lane++) {
 457			tmp = intel_de_read(dev_priv,
 458					    ICL_PORT_TX_DW4_LN(lane, phy));
 459			tmp &= ~LOADGEN_SELECT;
 460			if (lane != 2)
 461				tmp |= LOADGEN_SELECT;
 462			intel_de_write(dev_priv,
 463				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
 464		}
 465	}
 466
 467	/* Step 4b(ii) set latency optimization for transmit and aux lanes */
 468	for_each_dsi_phy(phy, intel_dsi->phys) {
 469		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
 470		tmp &= ~FRC_LATENCY_OPTIM_MASK;
 471		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
 472		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
 473		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN0(phy));
 474		tmp &= ~FRC_LATENCY_OPTIM_MASK;
 475		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
 476		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
 477
 478		/* For EHL, TGL, set latency optimization for PCS_DW1 lanes */
 479		if (IS_JSL_EHL(dev_priv) || (DISPLAY_VER(dev_priv) >= 12)) {
 480			tmp = intel_de_read(dev_priv,
 481					    ICL_PORT_PCS_DW1_AUX(phy));
 482			tmp &= ~LATENCY_OPTIM_MASK;
 483			tmp |= LATENCY_OPTIM_VAL(0);
 484			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
 485				       tmp);
 486
 487			tmp = intel_de_read(dev_priv,
 488					    ICL_PORT_PCS_DW1_LN0(phy));
 489			tmp &= ~LATENCY_OPTIM_MASK;
 490			tmp |= LATENCY_OPTIM_VAL(0x1);
 491			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy),
 492				       tmp);
 493		}
 494	}
 495
 496}
 497
 498static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
 499{
 500	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 501	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 502	u32 tmp;
 503	enum phy phy;
 504
 505	/* clear common keeper enable bit */
 506	for_each_dsi_phy(phy, intel_dsi->phys) {
 507		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN0(phy));
 508		tmp &= ~COMMON_KEEPER_EN;
 509		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp);
 510		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy));
 511		tmp &= ~COMMON_KEEPER_EN;
 512		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp);
 513	}
 514
 515	/*
 516	 * Set SUS Clock Config bitfield to 11b
 517	 * Note: loadgen select program is done
 518	 * as part of lane phy sequence configuration
 519	 */
 520	for_each_dsi_phy(phy, intel_dsi->phys) {
 521		tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
 522		tmp |= SUS_CLOCK_CONFIG;
 523		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp);
 524	}
 525
 526	/* Clear training enable to change swing values */
 527	for_each_dsi_phy(phy, intel_dsi->phys) {
 528		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(phy));
 529		tmp &= ~TX_TRAINING_EN;
 530		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
 531		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
 532		tmp &= ~TX_TRAINING_EN;
 533		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
 534	}
 535
 536	/* Program swing and de-emphasis */
 537	dsi_program_swing_and_deemphasis(encoder);
 538
 539	/* Set training enable to trigger update */
 540	for_each_dsi_phy(phy, intel_dsi->phys) {
 541		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(phy));
 542		tmp |= TX_TRAINING_EN;
 543		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
 544		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
 545		tmp |= TX_TRAINING_EN;
 546		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
 547	}
 548}
 549
 550static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder)
 551{
 552	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 553	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 554	u32 tmp;
 555	enum port port;
 556
 557	for_each_dsi_port(port, intel_dsi->ports) {
 558		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
 559		tmp |= DDI_BUF_CTL_ENABLE;
 560		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
 561
 562		if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
 563				  DDI_BUF_IS_IDLE),
 564				  500))
 565			drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n",
 566				port_name(port));
 567	}
 568}
 569
 570static void
 571gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
 572			     const struct intel_crtc_state *crtc_state)
 573{
 574	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 575	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 576	u32 tmp;
 577	enum port port;
 578	enum phy phy;
 579
 580	/* Program T-INIT master registers */
 581	for_each_dsi_port(port, intel_dsi->ports) {
 582		tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port));
 583		tmp &= ~MASTER_INIT_TIMER_MASK;
 584		tmp |= intel_dsi->init_count;
 585		intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp);
 586	}
 587
 588	/* Program DPHY clock lanes timings */
 589	for_each_dsi_port(port, intel_dsi->ports) {
 590		intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port),
 591			       intel_dsi->dphy_reg);
 592
 593		/* shadow register inside display core */
 594		intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port),
 595			       intel_dsi->dphy_reg);
 596	}
 597
 598	/* Program DPHY data lanes timings */
 599	for_each_dsi_port(port, intel_dsi->ports) {
 600		intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port),
 601			       intel_dsi->dphy_data_lane_reg);
 602
 603		/* shadow register inside display core */
 604		intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port),
 605			       intel_dsi->dphy_data_lane_reg);
 606	}
 607
 608	/*
 609	 * If DSI link operating at or below an 800 MHz,
 610	 * TA_SURE should be override and programmed to
 611	 * a value '0' inside TA_PARAM_REGISTERS otherwise
 612	 * leave all fields at HW default values.
 613	 */
 614	if (DISPLAY_VER(dev_priv) == 11) {
 615		if (afe_clk(encoder, crtc_state) <= 800000) {
 616			for_each_dsi_port(port, intel_dsi->ports) {
 617				tmp = intel_de_read(dev_priv,
 618						    DPHY_TA_TIMING_PARAM(port));
 619				tmp &= ~TA_SURE_MASK;
 620				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
 621				intel_de_write(dev_priv,
 622					       DPHY_TA_TIMING_PARAM(port),
 623					       tmp);
 624
 625				/* shadow register inside display core */
 626				tmp = intel_de_read(dev_priv,
 627						    DSI_TA_TIMING_PARAM(port));
 628				tmp &= ~TA_SURE_MASK;
 629				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
 630				intel_de_write(dev_priv,
 631					       DSI_TA_TIMING_PARAM(port), tmp);
 632			}
 633		}
 634	}
 635
 636	if (IS_JSL_EHL(dev_priv)) {
 637		for_each_dsi_phy(phy, intel_dsi->phys) {
 638			tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy));
 639			tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP;
 640			intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp);
 641		}
 642	}
 643}
 644
 645static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
 646{
 647	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 648	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 649	u32 tmp;
 650	enum phy phy;
 651
 652	mutex_lock(&dev_priv->dpll.lock);
 653	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
 654	for_each_dsi_phy(phy, intel_dsi->phys)
 655		tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 656
 657	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
 658	mutex_unlock(&dev_priv->dpll.lock);
 659}
 660
 661static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
 662{
 663	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 664	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 665	u32 tmp;
 666	enum phy phy;
 667
 668	mutex_lock(&dev_priv->dpll.lock);
 669	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
 670	for_each_dsi_phy(phy, intel_dsi->phys)
 671		tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 672
 673	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
 674	mutex_unlock(&dev_priv->dpll.lock);
 675}
 676
 677static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder)
 678{
 679	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 680	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 681	bool clock_enabled = false;
 682	enum phy phy;
 683	u32 tmp;
 684
 685	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
 686
 687	for_each_dsi_phy(phy, intel_dsi->phys) {
 688		if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)))
 689			clock_enabled = true;
 690	}
 691
 692	return clock_enabled;
 693}
 694
 695static void gen11_dsi_map_pll(struct intel_encoder *encoder,
 696			      const struct intel_crtc_state *crtc_state)
 697{
 698	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 699	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 700	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
 701	enum phy phy;
 702	u32 val;
 703
 704	mutex_lock(&dev_priv->dpll.lock);
 705
 706	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
 707	for_each_dsi_phy(phy, intel_dsi->phys) {
 708		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
 709		val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
 710	}
 711	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
 712
 713	for_each_dsi_phy(phy, intel_dsi->phys) {
 714		if (DISPLAY_VER(dev_priv) >= 12)
 715			val |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 716		else
 717			val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 718	}
 719	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
 720
 721	intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0);
 722
 723	mutex_unlock(&dev_priv->dpll.lock);
 724}
 725
 726static void
 727gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 728			       const struct intel_crtc_state *pipe_config)
 729{
 730	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 731	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 732	struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc);
 733	enum pipe pipe = intel_crtc->pipe;
 734	u32 tmp;
 735	enum port port;
 736	enum transcoder dsi_trans;
 737
 738	for_each_dsi_port(port, intel_dsi->ports) {
 739		dsi_trans = dsi_port_to_transcoder(port);
 740		tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
 741
 742		if (intel_dsi->eotp_pkt)
 743			tmp &= ~EOTP_DISABLED;
 744		else
 745			tmp |= EOTP_DISABLED;
 746
 747		/* enable link calibration if freq > 1.5Gbps */
 748		if (afe_clk(encoder, pipe_config) >= 1500 * 1000) {
 749			tmp &= ~LINK_CALIBRATION_MASK;
 750			tmp |= CALIBRATION_ENABLED_INITIAL_ONLY;
 751		}
 752
 753		/* configure continuous clock */
 754		tmp &= ~CONTINUOUS_CLK_MASK;
 755		if (intel_dsi->clock_stop)
 756			tmp |= CLK_ENTER_LP_AFTER_DATA;
 757		else
 758			tmp |= CLK_HS_CONTINUOUS;
 759
 760		/* configure buffer threshold limit to minimum */
 761		tmp &= ~PIX_BUF_THRESHOLD_MASK;
 762		tmp |= PIX_BUF_THRESHOLD_1_4;
 763
 764		/* set virtual channel to '0' */
 765		tmp &= ~PIX_VIRT_CHAN_MASK;
 766		tmp |= PIX_VIRT_CHAN(0);
 767
 768		/* program BGR transmission */
 769		if (intel_dsi->bgr_enabled)
 770			tmp |= BGR_TRANSMISSION;
 771
 772		/* select pixel format */
 773		tmp &= ~PIX_FMT_MASK;
 774		if (pipe_config->dsc.compression_enable) {
 775			tmp |= PIX_FMT_COMPRESSED;
 776		} else {
 777			switch (intel_dsi->pixel_format) {
 778			default:
 779				MISSING_CASE(intel_dsi->pixel_format);
 780				fallthrough;
 781			case MIPI_DSI_FMT_RGB565:
 782				tmp |= PIX_FMT_RGB565;
 783				break;
 784			case MIPI_DSI_FMT_RGB666_PACKED:
 785				tmp |= PIX_FMT_RGB666_PACKED;
 786				break;
 787			case MIPI_DSI_FMT_RGB666:
 788				tmp |= PIX_FMT_RGB666_LOOSE;
 789				break;
 790			case MIPI_DSI_FMT_RGB888:
 791				tmp |= PIX_FMT_RGB888;
 792				break;
 793			}
 794		}
 795
 796		if (DISPLAY_VER(dev_priv) >= 12) {
 797			if (is_vid_mode(intel_dsi))
 798				tmp |= BLANKING_PACKET_ENABLE;
 799		}
 800
 801		/* program DSI operation mode */
 802		if (is_vid_mode(intel_dsi)) {
 803			tmp &= ~OP_MODE_MASK;
 804			switch (intel_dsi->video_mode_format) {
 805			default:
 806				MISSING_CASE(intel_dsi->video_mode_format);
 807				fallthrough;
 808			case VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS:
 809				tmp |= VIDEO_MODE_SYNC_EVENT;
 810				break;
 811			case VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE:
 812				tmp |= VIDEO_MODE_SYNC_PULSE;
 813				break;
 814			}
 815		} else {
 816			/*
 817			 * FIXME: Retrieve this info from VBT.
 818			 * As per the spec when dsi transcoder is operating
 819			 * in TE GATE mode, TE comes from GPIO
 820			 * which is UTIL PIN for DSI 0.
 821			 * Also this GPIO would not be used for other
 822			 * purposes is an assumption.
 823			 */
 824			tmp &= ~OP_MODE_MASK;
 825			tmp |= CMD_MODE_TE_GATE;
 826			tmp |= TE_SOURCE_GPIO;
 827		}
 828
 829		intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp);
 830	}
 831
 832	/* enable port sync mode if dual link */
 833	if (intel_dsi->dual_link) {
 834		for_each_dsi_port(port, intel_dsi->ports) {
 835			dsi_trans = dsi_port_to_transcoder(port);
 836			tmp = intel_de_read(dev_priv,
 837					    TRANS_DDI_FUNC_CTL2(dsi_trans));
 838			tmp |= PORT_SYNC_MODE_ENABLE;
 839			intel_de_write(dev_priv,
 840				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
 841		}
 842
 843		/* configure stream splitting */
 844		configure_dual_link_mode(encoder, pipe_config);
 845	}
 846
 847	for_each_dsi_port(port, intel_dsi->ports) {
 848		dsi_trans = dsi_port_to_transcoder(port);
 849
 850		/* select data lane width */
 851		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
 852		tmp &= ~DDI_PORT_WIDTH_MASK;
 853		tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count);
 854
 855		/* select input pipe */
 856		tmp &= ~TRANS_DDI_EDP_INPUT_MASK;
 857		switch (pipe) {
 858		default:
 859			MISSING_CASE(pipe);
 860			fallthrough;
 861		case PIPE_A:
 862			tmp |= TRANS_DDI_EDP_INPUT_A_ON;
 863			break;
 864		case PIPE_B:
 865			tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
 866			break;
 867		case PIPE_C:
 868			tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
 869			break;
 870		case PIPE_D:
 871			tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF;
 872			break;
 873		}
 874
 875		/* enable DDI buffer */
 876		tmp |= TRANS_DDI_FUNC_ENABLE;
 877		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
 878	}
 879
 880	/* wait for link ready */
 881	for_each_dsi_port(port, intel_dsi->ports) {
 882		dsi_trans = dsi_port_to_transcoder(port);
 883		if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) &
 884				 LINK_READY), 2500))
 885			drm_err(&dev_priv->drm, "DSI link not ready\n");
 886	}
 887}
 888
 889static void
 890gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder,
 891				 const struct intel_crtc_state *crtc_state)
 892{
 893	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 894	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 895	const struct drm_display_mode *adjusted_mode =
 896		&crtc_state->hw.adjusted_mode;
 897	enum port port;
 898	enum transcoder dsi_trans;
 899	/* horizontal timings */
 900	u16 htotal, hactive, hsync_start, hsync_end, hsync_size;
 901	u16 hback_porch;
 902	/* vertical timings */
 903	u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift;
 904	int mul = 1, div = 1;
 905
 906	/*
 907	 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account
 908	 * for slower link speed if DSC is enabled.
 909	 *
 910	 * The compression frequency ratio is the ratio between compressed and
 911	 * non-compressed link speeds, and simplifies down to the ratio between
 912	 * compressed and non-compressed bpp.
 913	 */
 914	if (crtc_state->dsc.compression_enable) {
 915		mul = crtc_state->dsc.compressed_bpp;
 916		div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
 917	}
 918
 919	hactive = adjusted_mode->crtc_hdisplay;
 920
 921	if (is_vid_mode(intel_dsi))
 922		htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
 923	else
 924		htotal = DIV_ROUND_UP((hactive + 160) * mul, div);
 925
 926	hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
 927	hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
 928	hsync_size  = hsync_end - hsync_start;
 929	hback_porch = (adjusted_mode->crtc_htotal -
 930		       adjusted_mode->crtc_hsync_end);
 931	vactive = adjusted_mode->crtc_vdisplay;
 932
 933	if (is_vid_mode(intel_dsi)) {
 934		vtotal = adjusted_mode->crtc_vtotal;
 935	} else {
 936		int bpp, line_time_us, byte_clk_period_ns;
 937
 938		if (crtc_state->dsc.compression_enable)
 939			bpp = crtc_state->dsc.compressed_bpp;
 940		else
 941			bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
 942
 943		byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state);
 944		line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count);
 945		vtotal = vactive + DIV_ROUND_UP(400, line_time_us);
 946	}
 947	vsync_start = adjusted_mode->crtc_vsync_start;
 948	vsync_end = adjusted_mode->crtc_vsync_end;
 949	vsync_shift = hsync_start - htotal / 2;
 950
 951	if (intel_dsi->dual_link) {
 952		hactive /= 2;
 953		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
 954			hactive += intel_dsi->pixel_overlap;
 955		htotal /= 2;
 956	}
 957
 958	/* minimum hactive as per bspec: 256 pixels */
 959	if (adjusted_mode->crtc_hdisplay < 256)
 960		drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n");
 961
 962	/* if RGB666 format, then hactive must be multiple of 4 pixels */
 963	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0)
 964		drm_err(&dev_priv->drm,
 965			"hactive pixels are not multiple of 4\n");
 966
 967	/* program TRANS_HTOTAL register */
 968	for_each_dsi_port(port, intel_dsi->ports) {
 969		dsi_trans = dsi_port_to_transcoder(port);
 970		intel_de_write(dev_priv, HTOTAL(dsi_trans),
 971			       (hactive - 1) | ((htotal - 1) << 16));
 972	}
 973
 974	/* TRANS_HSYNC register to be programmed only for video mode */
 975	if (is_vid_mode(intel_dsi)) {
 976		if (intel_dsi->video_mode_format ==
 977		    VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE) {
 978			/* BSPEC: hsync size should be atleast 16 pixels */
 979			if (hsync_size < 16)
 980				drm_err(&dev_priv->drm,
 981					"hsync size < 16 pixels\n");
 982		}
 983
 984		if (hback_porch < 16)
 985			drm_err(&dev_priv->drm, "hback porch < 16 pixels\n");
 986
 987		if (intel_dsi->dual_link) {
 988			hsync_start /= 2;
 989			hsync_end /= 2;
 990		}
 991
 992		for_each_dsi_port(port, intel_dsi->ports) {
 993			dsi_trans = dsi_port_to_transcoder(port);
 994			intel_de_write(dev_priv, HSYNC(dsi_trans),
 995				       (hsync_start - 1) | ((hsync_end - 1) << 16));
 996		}
 997	}
 998
 999	/* program TRANS_VTOTAL register */
1000	for_each_dsi_port(port, intel_dsi->ports) {
1001		dsi_trans = dsi_port_to_transcoder(port);
1002		/*
1003		 * FIXME: Programing this by assuming progressive mode, since
1004		 * non-interlaced info from VBT is not saved inside
1005		 * struct drm_display_mode.
1006		 * For interlace mode: program required pixel minus 2
1007		 */
1008		intel_de_write(dev_priv, VTOTAL(dsi_trans),
1009			       (vactive - 1) | ((vtotal - 1) << 16));
1010	}
1011
1012	if (vsync_end < vsync_start || vsync_end > vtotal)
1013		drm_err(&dev_priv->drm, "Invalid vsync_end value\n");
1014
1015	if (vsync_start < vactive)
1016		drm_err(&dev_priv->drm, "vsync_start less than vactive\n");
1017
1018	/* program TRANS_VSYNC register for video mode only */
1019	if (is_vid_mode(intel_dsi)) {
1020		for_each_dsi_port(port, intel_dsi->ports) {
1021			dsi_trans = dsi_port_to_transcoder(port);
1022			intel_de_write(dev_priv, VSYNC(dsi_trans),
1023				       (vsync_start - 1) | ((vsync_end - 1) << 16));
1024		}
1025	}
1026
1027	/*
1028	 * FIXME: It has to be programmed only for video modes and interlaced
1029	 * modes. Put the check condition here once interlaced
1030	 * info available as described above.
1031	 * program TRANS_VSYNCSHIFT register
1032	 */
1033	if (is_vid_mode(intel_dsi)) {
1034		for_each_dsi_port(port, intel_dsi->ports) {
1035			dsi_trans = dsi_port_to_transcoder(port);
1036			intel_de_write(dev_priv, VSYNCSHIFT(dsi_trans),
1037				       vsync_shift);
1038		}
1039	}
1040
1041	/* program TRANS_VBLANK register, should be same as vtotal programmed */
1042	if (DISPLAY_VER(dev_priv) >= 12) {
1043		for_each_dsi_port(port, intel_dsi->ports) {
1044			dsi_trans = dsi_port_to_transcoder(port);
1045			intel_de_write(dev_priv, VBLANK(dsi_trans),
1046				       (vactive - 1) | ((vtotal - 1) << 16));
1047		}
1048	}
1049}
1050
1051static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder)
1052{
1053	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1054	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1055	enum port port;
1056	enum transcoder dsi_trans;
1057	u32 tmp;
1058
1059	for_each_dsi_port(port, intel_dsi->ports) {
1060		dsi_trans = dsi_port_to_transcoder(port);
1061		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1062		tmp |= PIPECONF_ENABLE;
1063		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
1064
1065		/* wait for transcoder to be enabled */
1066		if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans),
1067					  I965_PIPECONF_ACTIVE, 10))
1068			drm_err(&dev_priv->drm,
1069				"DSI transcoder not enabled\n");
1070	}
1071}
1072
1073static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
1074				     const struct intel_crtc_state *crtc_state)
1075{
1076	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1077	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1078	enum port port;
1079	enum transcoder dsi_trans;
1080	u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
1081
1082	/*
1083	 * escape clock count calculation:
1084	 * BYTE_CLK_COUNT = TIME_NS/(8 * UI)
1085	 * UI (nsec) = (10^6)/Bitrate
1086	 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate
1087	 * ESCAPE_CLK_COUNT  = TIME_NS/ESC_CLK_NS
1088	 */
1089	divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000;
1090	mul = 8 * 1000000;
1091	hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul,
1092				     divisor);
1093	lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor);
1094	ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor);
1095
1096	for_each_dsi_port(port, intel_dsi->ports) {
1097		dsi_trans = dsi_port_to_transcoder(port);
1098
1099		/* program hst_tx_timeout */
1100		tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans));
1101		tmp &= ~HSTX_TIMEOUT_VALUE_MASK;
1102		tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout);
1103		intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp);
1104
1105		/* FIXME: DSI_CALIB_TO */
1106
1107		/* program lp_rx_host timeout */
1108		tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans));
1109		tmp &= ~LPRX_TIMEOUT_VALUE_MASK;
1110		tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout);
1111		intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp);
1112
1113		/* FIXME: DSI_PWAIT_TO */
1114
1115		/* program turn around timeout */
1116		tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans));
1117		tmp &= ~TA_TIMEOUT_VALUE_MASK;
1118		tmp |= TA_TIMEOUT_VALUE(ta_timeout);
1119		intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp);
1120	}
1121}
1122
1123static void gen11_dsi_config_util_pin(struct intel_encoder *encoder,
1124				      bool enable)
1125{
1126	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1127	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1128	u32 tmp;
1129
1130	/*
1131	 * used as TE i/p for DSI0,
1132	 * for dual link/DSI1 TE is from slave DSI1
1133	 * through GPIO.
1134	 */
1135	if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B)))
1136		return;
1137
1138	tmp = intel_de_read(dev_priv, UTIL_PIN_CTL);
1139
1140	if (enable) {
1141		tmp |= UTIL_PIN_DIRECTION_INPUT;
1142		tmp |= UTIL_PIN_ENABLE;
1143	} else {
1144		tmp &= ~UTIL_PIN_ENABLE;
1145	}
1146	intel_de_write(dev_priv, UTIL_PIN_CTL, tmp);
1147}
1148
1149static void
1150gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
1151			      const struct intel_crtc_state *crtc_state)
1152{
1153	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1154
1155	/* step 4a: power up all lanes of the DDI used by DSI */
1156	gen11_dsi_power_up_lanes(encoder);
1157
1158	/* step 4b: configure lane sequencing of the Combo-PHY transmitters */
1159	gen11_dsi_config_phy_lanes_sequence(encoder);
1160
1161	/* step 4c: configure voltage swing and skew */
1162	gen11_dsi_voltage_swing_program_seq(encoder);
1163
1164	/* enable DDI buffer */
1165	gen11_dsi_enable_ddi_buffer(encoder);
1166
1167	/* setup D-PHY timings */
1168	gen11_dsi_setup_dphy_timings(encoder, crtc_state);
1169
1170	/* Since transcoder is configured to take events from GPIO */
1171	gen11_dsi_config_util_pin(encoder, true);
1172
1173	/* step 4h: setup DSI protocol timeouts */
1174	gen11_dsi_setup_timeouts(encoder, crtc_state);
1175
1176	/* Step (4h, 4i, 4j, 4k): Configure transcoder */
1177	gen11_dsi_configure_transcoder(encoder, crtc_state);
1178
1179	/* Step 4l: Gate DDI clocks */
1180	if (DISPLAY_VER(dev_priv) == 11)
1181		gen11_dsi_gate_clocks(encoder);
1182}
1183
1184static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
1185{
1186	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1187	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1188	struct mipi_dsi_device *dsi;
1189	enum port port;
1190	enum transcoder dsi_trans;
1191	u32 tmp;
1192	int ret;
1193
1194	/* set maximum return packet size */
1195	for_each_dsi_port(port, intel_dsi->ports) {
1196		dsi_trans = dsi_port_to_transcoder(port);
1197
1198		/*
1199		 * FIXME: This uses the number of DW's currently in the payload
1200		 * receive queue. This is probably not what we want here.
1201		 */
1202		tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans));
1203		tmp &= NUMBER_RX_PLOAD_DW_MASK;
1204		/* multiply "Number Rx Payload DW" by 4 to get max value */
1205		tmp = tmp * 4;
1206		dsi = intel_dsi->dsi_hosts[port]->device;
1207		ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp);
1208		if (ret < 0)
1209			drm_err(&dev_priv->drm,
1210				"error setting max return pkt size%d\n", tmp);
1211	}
1212
1213	/* panel power on related mipi dsi vbt sequences */
1214	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
1215	intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay);
1216	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
1217	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
1218	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
1219
1220	/* ensure all panel commands dispatched before enabling transcoder */
1221	wait_for_cmds_dispatched_to_panel(encoder);
1222}
1223
1224static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state,
1225				     struct intel_encoder *encoder,
1226				     const struct intel_crtc_state *crtc_state,
1227				     const struct drm_connector_state *conn_state)
1228{
1229	/* step2: enable IO power */
1230	gen11_dsi_enable_io_power(encoder);
1231
1232	/* step3: enable DSI PLL */
1233	gen11_dsi_program_esc_clk_div(encoder, crtc_state);
1234}
1235
1236static void gen11_dsi_pre_enable(struct intel_atomic_state *state,
1237				 struct intel_encoder *encoder,
1238				 const struct intel_crtc_state *pipe_config,
1239				 const struct drm_connector_state *conn_state)
1240{
1241	/* step3b */
1242	gen11_dsi_map_pll(encoder, pipe_config);
1243
1244	/* step4: enable DSI port and DPHY */
1245	gen11_dsi_enable_port_and_phy(encoder, pipe_config);
1246
1247	/* step5: program and powerup panel */
1248	gen11_dsi_powerup_panel(encoder);
1249
1250	intel_dsc_enable(encoder, pipe_config);
1251
1252	/* step6c: configure transcoder timings */
1253	gen11_dsi_set_transcoder_timings(encoder, pipe_config);
1254}
1255
1256/*
1257 * Wa_1409054076:icl,jsl,ehl
1258 * When pipe A is disabled and MIPI DSI is enabled on pipe B,
1259 * the AMT KVMR feature will incorrectly see pipe A as enabled.
1260 * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave
1261 * it set while DSI is enabled on pipe B
1262 */
1263static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder,
1264				     enum pipe pipe, bool enable)
1265{
1266	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1267
1268	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B)
1269		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
1270			     IGNORE_KVMR_PIPE_A,
1271			     enable ? IGNORE_KVMR_PIPE_A : 0);
1272}
1273static void gen11_dsi_enable(struct intel_atomic_state *state,
1274			     struct intel_encoder *encoder,
1275			     const struct intel_crtc_state *crtc_state,
1276			     const struct drm_connector_state *conn_state)
1277{
1278	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1279	struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc);
1280
1281	drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
1282
1283	/* Wa_1409054076:icl,jsl,ehl */
1284	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, true);
1285
1286	/* step6d: enable dsi transcoder */
1287	gen11_dsi_enable_transcoder(encoder);
1288
1289	/* step7: enable backlight */
1290	intel_panel_enable_backlight(crtc_state, conn_state);
1291	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
1292
1293	intel_crtc_vblank_on(crtc_state);
1294}
1295
1296static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder)
1297{
1298	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1299	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1300	enum port port;
1301	enum transcoder dsi_trans;
1302	u32 tmp;
1303
1304	for_each_dsi_port(port, intel_dsi->ports) {
1305		dsi_trans = dsi_port_to_transcoder(port);
1306
1307		/* disable transcoder */
1308		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1309		tmp &= ~PIPECONF_ENABLE;
1310		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
1311
1312		/* wait for transcoder to be disabled */
1313		if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans),
1314					    I965_PIPECONF_ACTIVE, 50))
1315			drm_err(&dev_priv->drm,
1316				"DSI trancoder not disabled\n");
1317	}
1318}
1319
1320static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder)
1321{
1322	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1323
1324	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
1325	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
1326	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
1327
1328	/* ensure cmds dispatched to panel */
1329	wait_for_cmds_dispatched_to_panel(encoder);
1330}
1331
1332static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
1333{
1334	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1335	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1336	enum port port;
1337	enum transcoder dsi_trans;
1338	u32 tmp;
1339
1340	/* disable periodic update mode */
1341	if (is_cmd_mode(intel_dsi)) {
1342		for_each_dsi_port(port, intel_dsi->ports) {
1343			tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
1344			tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE;
1345			intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
1346		}
1347	}
1348
1349	/* put dsi link in ULPS */
1350	for_each_dsi_port(port, intel_dsi->ports) {
1351		dsi_trans = dsi_port_to_transcoder(port);
1352		tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans));
1353		tmp |= LINK_ENTER_ULPS;
1354		tmp &= ~LINK_ULPS_TYPE_LP11;
1355		intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp);
1356
1357		if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
1358				 LINK_IN_ULPS),
1359				10))
1360			drm_err(&dev_priv->drm, "DSI link not in ULPS\n");
1361	}
1362
1363	/* disable ddi function */
1364	for_each_dsi_port(port, intel_dsi->ports) {
1365		dsi_trans = dsi_port_to_transcoder(port);
1366		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
1367		tmp &= ~TRANS_DDI_FUNC_ENABLE;
1368		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
1369	}
1370
1371	/* disable port sync mode if dual link */
1372	if (intel_dsi->dual_link) {
1373		for_each_dsi_port(port, intel_dsi->ports) {
1374			dsi_trans = dsi_port_to_transcoder(port);
1375			tmp = intel_de_read(dev_priv,
1376					    TRANS_DDI_FUNC_CTL2(dsi_trans));
1377			tmp &= ~PORT_SYNC_MODE_ENABLE;
1378			intel_de_write(dev_priv,
1379				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
1380		}
1381	}
1382}
1383
1384static void gen11_dsi_disable_port(struct intel_encoder *encoder)
1385{
1386	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1387	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1388	u32 tmp;
1389	enum port port;
1390
1391	gen11_dsi_ungate_clocks(encoder);
1392	for_each_dsi_port(port, intel_dsi->ports) {
1393		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
1394		tmp &= ~DDI_BUF_CTL_ENABLE;
1395		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
1396
1397		if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
1398				 DDI_BUF_IS_IDLE),
1399				 8))
1400			drm_err(&dev_priv->drm,
1401				"DDI port:%c buffer not idle\n",
1402				port_name(port));
1403	}
1404	gen11_dsi_gate_clocks(encoder);
1405}
1406
1407static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
1408{
1409	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1410	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1411	enum port port;
1412	u32 tmp;
1413
1414	for_each_dsi_port(port, intel_dsi->ports) {
1415		intel_wakeref_t wakeref;
1416
1417		wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]);
1418		intel_display_power_put(dev_priv,
1419					port == PORT_A ?
1420					POWER_DOMAIN_PORT_DDI_A_IO :
1421					POWER_DOMAIN_PORT_DDI_B_IO,
1422					wakeref);
1423	}
1424
1425	/* set mode to DDI */
1426	for_each_dsi_port(port, intel_dsi->ports) {
1427		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
1428		tmp &= ~COMBO_PHY_MODE_DSI;
1429		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
1430	}
1431}
1432
1433static void gen11_dsi_disable(struct intel_atomic_state *state,
1434			      struct intel_encoder *encoder,
1435			      const struct intel_crtc_state *old_crtc_state,
1436			      const struct drm_connector_state *old_conn_state)
1437{
1438	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1439	struct intel_crtc *crtc = to_intel_crtc(old_conn_state->crtc);
1440
1441	/* step1: turn off backlight */
1442	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
1443	intel_panel_disable_backlight(old_conn_state);
1444
1445	/* step2d,e: disable transcoder and wait */
1446	gen11_dsi_disable_transcoder(encoder);
1447
1448	/* Wa_1409054076:icl,jsl,ehl */
1449	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, false);
1450
1451	/* step2f,g: powerdown panel */
1452	gen11_dsi_powerdown_panel(encoder);
1453
1454	/* step2h,i,j: deconfig trancoder */
1455	gen11_dsi_deconfigure_trancoder(encoder);
1456
1457	/* step3: disable port */
1458	gen11_dsi_disable_port(encoder);
1459
1460	gen11_dsi_config_util_pin(encoder, false);
1461
1462	/* step4: disable IO power */
1463	gen11_dsi_disable_io_power(encoder);
1464}
1465
1466static void gen11_dsi_post_disable(struct intel_atomic_state *state,
1467				   struct intel_encoder *encoder,
1468				   const struct intel_crtc_state *old_crtc_state,
1469				   const struct drm_connector_state *old_conn_state)
1470{
1471	intel_crtc_vblank_off(old_crtc_state);
1472
1473	intel_dsc_disable(old_crtc_state);
1474
1475	skl_scaler_disable(old_crtc_state);
1476}
1477
1478static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector,
1479						 struct drm_display_mode *mode)
1480{
1481	/* FIXME: DSC? */
1482	return intel_dsi_mode_valid(connector, mode);
1483}
1484
1485static void gen11_dsi_get_timings(struct intel_encoder *encoder,
1486				  struct intel_crtc_state *pipe_config)
1487{
1488	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1489	struct drm_display_mode *adjusted_mode =
1490					&pipe_config->hw.adjusted_mode;
1491
1492	if (pipe_config->dsc.compressed_bpp) {
1493		int div = pipe_config->dsc.compressed_bpp;
1494		int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
1495
1496		adjusted_mode->crtc_htotal =
1497			DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
1498		adjusted_mode->crtc_hsync_start =
1499			DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
1500		adjusted_mode->crtc_hsync_end =
1501			DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
1502	}
1503
1504	if (intel_dsi->dual_link) {
1505		adjusted_mode->crtc_hdisplay *= 2;
1506		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
1507			adjusted_mode->crtc_hdisplay -=
1508						intel_dsi->pixel_overlap;
1509		adjusted_mode->crtc_htotal *= 2;
1510	}
1511	adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay;
1512	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal;
1513
1514	if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) {
1515		if (intel_dsi->dual_link) {
1516			adjusted_mode->crtc_hsync_start *= 2;
1517			adjusted_mode->crtc_hsync_end *= 2;
1518		}
1519	}
1520	adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay;
1521	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal;
1522}
1523
1524static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi)
1525{
1526	struct drm_device *dev = intel_dsi->base.base.dev;
1527	struct drm_i915_private *dev_priv = to_i915(dev);
1528	enum transcoder dsi_trans;
1529	u32 val;
1530
1531	if (intel_dsi->ports == BIT(PORT_B))
1532		dsi_trans = TRANSCODER_DSI_1;
1533	else
1534		dsi_trans = TRANSCODER_DSI_0;
1535
1536	val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
1537	return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE);
1538}
1539
1540static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi,
1541					  struct intel_crtc_state *pipe_config)
1542{
1543	if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
1544		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 |
1545					    I915_MODE_FLAG_DSI_USE_TE0;
1546	else if (intel_dsi->ports == BIT(PORT_B))
1547		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1;
1548	else
1549		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0;
1550}
1551
1552static void gen11_dsi_get_config(struct intel_encoder *encoder,
1553				 struct intel_crtc_state *pipe_config)
1554{
 
1555	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
1556	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1557
1558	intel_ddi_get_clock(encoder, pipe_config, icl_ddi_combo_get_pll(encoder));
 
 
 
 
1559
1560	pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk;
1561	if (intel_dsi->dual_link)
1562		pipe_config->hw.adjusted_mode.crtc_clock *= 2;
1563
1564	gen11_dsi_get_timings(encoder, pipe_config);
1565	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
1566	pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc);
1567
1568	/* Get the details on which TE should be enabled */
1569	if (is_cmd_mode(intel_dsi))
1570		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
1571
1572	if (gen11_dsi_is_periodic_cmd_mode(intel_dsi))
1573		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
1574}
1575
1576static void gen11_dsi_sync_state(struct intel_encoder *encoder,
1577				 const struct intel_crtc_state *crtc_state)
1578{
1579	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1580	struct intel_crtc *intel_crtc;
1581	enum pipe pipe;
1582
1583	if (!crtc_state)
1584		return;
1585
1586	intel_crtc = to_intel_crtc(crtc_state->uapi.crtc);
1587	pipe = intel_crtc->pipe;
1588
1589	/* wa verify 1409054076:icl,jsl,ehl */
1590	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B &&
1591	    !(intel_de_read(dev_priv, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A))
1592		drm_dbg_kms(&dev_priv->drm,
1593			    "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n",
1594			    encoder->base.base.id,
1595			    encoder->base.name);
1596}
1597
1598static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder,
1599					struct intel_crtc_state *crtc_state)
1600{
1601	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1602	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
1603	int dsc_max_bpc = DISPLAY_VER(dev_priv) >= 12 ? 12 : 10;
1604	bool use_dsc;
1605	int ret;
1606
1607	use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc);
1608	if (!use_dsc)
1609		return 0;
1610
1611	if (crtc_state->pipe_bpp < 8 * 3)
1612		return -EINVAL;
1613
1614	/* FIXME: split only when necessary */
1615	if (crtc_state->dsc.slice_count > 1)
1616		crtc_state->dsc.dsc_split = true;
1617
1618	vdsc_cfg->convert_rgb = true;
1619
1620	/* FIXME: initialize from VBT */
1621	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
1622
1623	ret = intel_dsc_compute_params(encoder, crtc_state);
1624	if (ret)
1625		return ret;
1626
1627	/* DSI specific sanity checks on the common code */
1628	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable);
1629	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422);
1630	drm_WARN_ON(&dev_priv->drm,
1631		    vdsc_cfg->pic_width % vdsc_cfg->slice_width);
1632	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8);
1633	drm_WARN_ON(&dev_priv->drm,
1634		    vdsc_cfg->pic_height % vdsc_cfg->slice_height);
1635
1636	ret = drm_dsc_compute_rc_parameters(vdsc_cfg);
1637	if (ret)
1638		return ret;
1639
1640	crtc_state->dsc.compression_enable = true;
1641
1642	return 0;
1643}
1644
1645static int gen11_dsi_compute_config(struct intel_encoder *encoder,
1646				    struct intel_crtc_state *pipe_config,
1647				    struct drm_connector_state *conn_state)
1648{
1649	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1650	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
1651						   base);
1652	struct intel_connector *intel_connector = intel_dsi->attached_connector;
1653	const struct drm_display_mode *fixed_mode =
1654		intel_connector->panel.fixed_mode;
1655	struct drm_display_mode *adjusted_mode =
1656		&pipe_config->hw.adjusted_mode;
1657	int ret;
1658
1659	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
1660	intel_fixed_panel_mode(fixed_mode, adjusted_mode);
1661
1662	ret = intel_pch_panel_fitting(pipe_config, conn_state);
1663	if (ret)
1664		return ret;
1665
1666	adjusted_mode->flags = 0;
1667
1668	/* Dual link goes to trancoder DSI'0' */
1669	if (intel_dsi->ports == BIT(PORT_B))
1670		pipe_config->cpu_transcoder = TRANSCODER_DSI_1;
1671	else
1672		pipe_config->cpu_transcoder = TRANSCODER_DSI_0;
1673
1674	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888)
1675		pipe_config->pipe_bpp = 24;
1676	else
1677		pipe_config->pipe_bpp = 18;
1678
1679	pipe_config->clock_set = true;
1680
1681	if (gen11_dsi_dsc_compute_config(encoder, pipe_config))
1682		drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n");
1683
1684	pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5;
1685
1686	/*
1687	 * In case of TE GATE cmd mode, we
1688	 * receive TE from the slave if
1689	 * dual link is enabled
1690	 */
1691	if (is_cmd_mode(intel_dsi))
1692		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
 
 
 
 
 
 
 
 
 
 
1693
1694	return 0;
1695}
1696
1697static void gen11_dsi_get_power_domains(struct intel_encoder *encoder,
1698					struct intel_crtc_state *crtc_state)
1699{
1700	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
1701
1702	get_dsi_io_power_domains(i915,
1703				 enc_to_intel_dsi(encoder));
 
 
 
 
1704}
1705
1706static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
1707				   enum pipe *pipe)
1708{
1709	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
1710	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
1711	enum transcoder dsi_trans;
1712	intel_wakeref_t wakeref;
1713	enum port port;
1714	bool ret = false;
1715	u32 tmp;
1716
1717	wakeref = intel_display_power_get_if_enabled(dev_priv,
1718						     encoder->power_domain);
1719	if (!wakeref)
1720		return false;
1721
1722	for_each_dsi_port(port, intel_dsi->ports) {
1723		dsi_trans = dsi_port_to_transcoder(port);
1724		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
1725		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1726		case TRANS_DDI_EDP_INPUT_A_ON:
1727			*pipe = PIPE_A;
1728			break;
1729		case TRANS_DDI_EDP_INPUT_B_ONOFF:
1730			*pipe = PIPE_B;
1731			break;
1732		case TRANS_DDI_EDP_INPUT_C_ONOFF:
1733			*pipe = PIPE_C;
1734			break;
1735		case TRANS_DDI_EDP_INPUT_D_ONOFF:
1736			*pipe = PIPE_D;
1737			break;
1738		default:
1739			drm_err(&dev_priv->drm, "Invalid PIPE input\n");
1740			goto out;
1741		}
1742
1743		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
1744		ret = tmp & PIPECONF_ENABLE;
1745	}
1746out:
1747	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
1748	return ret;
1749}
1750
1751static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder,
1752					    struct intel_crtc_state *crtc_state)
1753{
1754	if (crtc_state->dsc.compression_enable) {
1755		drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n");
1756		crtc_state->uapi.mode_changed = true;
1757
1758		return false;
1759	}
1760
1761	return true;
1762}
1763
1764static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
1765{
1766	intel_encoder_destroy(encoder);
1767}
1768
1769static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = {
1770	.destroy = gen11_dsi_encoder_destroy,
1771};
1772
1773static const struct drm_connector_funcs gen11_dsi_connector_funcs = {
1774	.detect = intel_panel_detect,
1775	.late_register = intel_connector_register,
1776	.early_unregister = intel_connector_unregister,
1777	.destroy = intel_connector_destroy,
1778	.fill_modes = drm_helper_probe_single_connector_modes,
1779	.atomic_get_property = intel_digital_connector_atomic_get_property,
1780	.atomic_set_property = intel_digital_connector_atomic_set_property,
1781	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1782	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
1783};
1784
1785static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = {
1786	.get_modes = intel_dsi_get_modes,
1787	.mode_valid = gen11_dsi_mode_valid,
1788	.atomic_check = intel_digital_connector_atomic_check,
1789};
1790
1791static int gen11_dsi_host_attach(struct mipi_dsi_host *host,
1792				 struct mipi_dsi_device *dsi)
1793{
1794	return 0;
1795}
1796
1797static int gen11_dsi_host_detach(struct mipi_dsi_host *host,
1798				 struct mipi_dsi_device *dsi)
1799{
1800	return 0;
1801}
1802
1803static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host,
1804				       const struct mipi_dsi_msg *msg)
1805{
1806	struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host);
1807	struct mipi_dsi_packet dsi_pkt;
1808	ssize_t ret;
1809	bool enable_lpdt = false;
1810
1811	ret = mipi_dsi_create_packet(&dsi_pkt, msg);
1812	if (ret < 0)
1813		return ret;
1814
1815	if (msg->flags & MIPI_DSI_MSG_USE_LPM)
1816		enable_lpdt = true;
1817
1818	/* send packet header */
1819	ret  = dsi_send_pkt_hdr(intel_dsi_host, dsi_pkt, enable_lpdt);
1820	if (ret < 0)
1821		return ret;
1822
1823	/* only long packet contains payload */
1824	if (mipi_dsi_packet_format_is_long(msg->type)) {
1825		ret = dsi_send_pkt_payld(intel_dsi_host, dsi_pkt);
1826		if (ret < 0)
1827			return ret;
1828	}
1829
1830	//TODO: add payload receive code if needed
1831
1832	ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length;
1833
1834	return ret;
1835}
1836
1837static const struct mipi_dsi_host_ops gen11_dsi_host_ops = {
1838	.attach = gen11_dsi_host_attach,
1839	.detach = gen11_dsi_host_detach,
1840	.transfer = gen11_dsi_host_transfer,
1841};
1842
1843#define ICL_PREPARE_CNT_MAX	0x7
1844#define ICL_CLK_ZERO_CNT_MAX	0xf
1845#define ICL_TRAIL_CNT_MAX	0x7
1846#define ICL_TCLK_PRE_CNT_MAX	0x3
1847#define ICL_TCLK_POST_CNT_MAX	0x7
1848#define ICL_HS_ZERO_CNT_MAX	0xf
1849#define ICL_EXIT_ZERO_CNT_MAX	0x7
1850
1851static void icl_dphy_param_init(struct intel_dsi *intel_dsi)
1852{
1853	struct drm_device *dev = intel_dsi->base.base.dev;
1854	struct drm_i915_private *dev_priv = to_i915(dev);
1855	struct mipi_config *mipi_config = dev_priv->vbt.dsi.config;
1856	u32 tlpx_ns;
1857	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
1858	u32 ths_prepare_ns, tclk_trail_ns;
1859	u32 hs_zero_cnt;
1860	u32 tclk_pre_cnt, tclk_post_cnt;
1861
1862	tlpx_ns = intel_dsi_tlpx_ns(intel_dsi);
1863
1864	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);
1865	ths_prepare_ns = max(mipi_config->ths_prepare,
1866			     mipi_config->tclk_prepare);
1867
1868	/*
1869	 * prepare cnt in escape clocks
1870	 * this field represents a hexadecimal value with a precision
1871	 * of 1.2 – i.e. the most significant bit is the integer
1872	 * and the least significant 2 bits are fraction bits.
1873	 * so, the field can represent a range of 0.25 to 1.75
1874	 */
1875	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns);
1876	if (prepare_cnt > ICL_PREPARE_CNT_MAX) {
1877		drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n",
1878			    prepare_cnt);
1879		prepare_cnt = ICL_PREPARE_CNT_MAX;
1880	}
1881
1882	/* clk zero count in escape clocks */
1883	clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero -
1884				    ths_prepare_ns, tlpx_ns);
1885	if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) {
1886		drm_dbg_kms(&dev_priv->drm,
1887			    "clk_zero_cnt out of range (%d)\n", clk_zero_cnt);
1888		clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX;
1889	}
1890
1891	/* trail cnt in escape clocks*/
1892	trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns);
1893	if (trail_cnt > ICL_TRAIL_CNT_MAX) {
1894		drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n",
1895			    trail_cnt);
1896		trail_cnt = ICL_TRAIL_CNT_MAX;
1897	}
1898
1899	/* tclk pre count in escape clocks */
1900	tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns);
1901	if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) {
1902		drm_dbg_kms(&dev_priv->drm,
1903			    "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt);
1904		tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX;
1905	}
1906
1907	/* tclk post count in escape clocks */
1908	tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns);
1909	if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) {
1910		drm_dbg_kms(&dev_priv->drm,
1911			    "tclk_post_cnt out of range (%d)\n",
1912			    tclk_post_cnt);
1913		tclk_post_cnt = ICL_TCLK_POST_CNT_MAX;
1914	}
1915
1916	/* hs zero cnt in escape clocks */
1917	hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero -
1918				   ths_prepare_ns, tlpx_ns);
1919	if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) {
1920		drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n",
1921			    hs_zero_cnt);
1922		hs_zero_cnt = ICL_HS_ZERO_CNT_MAX;
1923	}
1924
1925	/* hs exit zero cnt in escape clocks */
1926	exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns);
1927	if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) {
1928		drm_dbg_kms(&dev_priv->drm,
1929			    "exit_zero_cnt out of range (%d)\n",
1930			    exit_zero_cnt);
1931		exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX;
1932	}
1933
1934	/* clock lane dphy timings */
1935	intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE |
1936			       CLK_PREPARE(prepare_cnt) |
1937			       CLK_ZERO_OVERRIDE |
1938			       CLK_ZERO(clk_zero_cnt) |
1939			       CLK_PRE_OVERRIDE |
1940			       CLK_PRE(tclk_pre_cnt) |
1941			       CLK_POST_OVERRIDE |
1942			       CLK_POST(tclk_post_cnt) |
1943			       CLK_TRAIL_OVERRIDE |
1944			       CLK_TRAIL(trail_cnt));
1945
1946	/* data lanes dphy timings */
1947	intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE |
1948					 HS_PREPARE(prepare_cnt) |
1949					 HS_ZERO_OVERRIDE |
1950					 HS_ZERO(hs_zero_cnt) |
1951					 HS_TRAIL_OVERRIDE |
1952					 HS_TRAIL(trail_cnt) |
1953					 HS_EXIT_OVERRIDE |
1954					 HS_EXIT(exit_zero_cnt));
1955
1956	intel_dsi_log_params(intel_dsi);
1957}
1958
1959static void icl_dsi_add_properties(struct intel_connector *connector)
1960{
1961	u32 allowed_scalers;
1962
1963	allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) |
1964			   BIT(DRM_MODE_SCALE_FULLSCREEN) |
1965			   BIT(DRM_MODE_SCALE_CENTER);
1966
1967	drm_connector_attach_scaling_mode_property(&connector->base,
1968						   allowed_scalers);
1969
1970	connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
1971
1972	drm_connector_set_panel_orientation_with_quirk(&connector->base,
1973				intel_dsi_get_panel_orientation(connector),
1974				connector->panel.fixed_mode->hdisplay,
1975				connector->panel.fixed_mode->vdisplay);
1976}
1977
1978void icl_dsi_init(struct drm_i915_private *dev_priv)
1979{
1980	struct drm_device *dev = &dev_priv->drm;
1981	struct intel_dsi *intel_dsi;
1982	struct intel_encoder *encoder;
1983	struct intel_connector *intel_connector;
1984	struct drm_connector *connector;
1985	struct drm_display_mode *fixed_mode;
1986	enum port port;
1987
1988	if (!intel_bios_is_dsi_present(dev_priv, &port))
1989		return;
1990
1991	intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
1992	if (!intel_dsi)
1993		return;
1994
1995	intel_connector = intel_connector_alloc();
1996	if (!intel_connector) {
1997		kfree(intel_dsi);
1998		return;
1999	}
2000
2001	encoder = &intel_dsi->base;
2002	intel_dsi->attached_connector = intel_connector;
2003	connector = &intel_connector->base;
2004
2005	/* register DSI encoder with DRM subsystem */
2006	drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs,
2007			 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port));
2008
2009	encoder->pre_pll_enable = gen11_dsi_pre_pll_enable;
2010	encoder->pre_enable = gen11_dsi_pre_enable;
2011	encoder->enable = gen11_dsi_enable;
2012	encoder->disable = gen11_dsi_disable;
2013	encoder->post_disable = gen11_dsi_post_disable;
2014	encoder->port = port;
2015	encoder->get_config = gen11_dsi_get_config;
2016	encoder->sync_state = gen11_dsi_sync_state;
2017	encoder->update_pipe = intel_panel_update_backlight;
2018	encoder->compute_config = gen11_dsi_compute_config;
2019	encoder->get_hw_state = gen11_dsi_get_hw_state;
2020	encoder->initial_fastset_check = gen11_dsi_initial_fastset_check;
2021	encoder->type = INTEL_OUTPUT_DSI;
2022	encoder->cloneable = 0;
2023	encoder->pipe_mask = ~0;
2024	encoder->power_domain = POWER_DOMAIN_PORT_DSI;
2025	encoder->get_power_domains = gen11_dsi_get_power_domains;
2026	encoder->disable_clock = gen11_dsi_gate_clocks;
2027	encoder->is_clock_enabled = gen11_dsi_is_clock_enabled;
2028
2029	/* register DSI connector with DRM subsystem */
2030	drm_connector_init(dev, connector, &gen11_dsi_connector_funcs,
2031			   DRM_MODE_CONNECTOR_DSI);
2032	drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs);
2033	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
2034	connector->interlace_allowed = false;
2035	connector->doublescan_allowed = false;
2036	intel_connector->get_hw_state = intel_connector_get_hw_state;
2037
2038	/* attach connector to encoder */
2039	intel_connector_attach_encoder(intel_connector, encoder);
2040
2041	mutex_lock(&dev->mode_config.mutex);
2042	fixed_mode = intel_panel_vbt_fixed_mode(intel_connector);
2043	mutex_unlock(&dev->mode_config.mutex);
2044
2045	if (!fixed_mode) {
2046		drm_err(&dev_priv->drm, "DSI fixed mode info missing\n");
2047		goto err;
2048	}
2049
2050	intel_panel_init(&intel_connector->panel, fixed_mode, NULL);
2051	intel_panel_setup_backlight(connector, INVALID_PIPE);
2052
2053	if (dev_priv->vbt.dsi.config->dual_link)
2054		intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B);
2055	else
2056		intel_dsi->ports = BIT(port);
2057
2058	intel_dsi->dcs_backlight_ports = dev_priv->vbt.dsi.bl_ports;
2059	intel_dsi->dcs_cabc_ports = dev_priv->vbt.dsi.cabc_ports;
2060
2061	for_each_dsi_port(port, intel_dsi->ports) {
2062		struct intel_dsi_host *host;
2063
2064		host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port);
2065		if (!host)
2066			goto err;
2067
2068		intel_dsi->dsi_hosts[port] = host;
2069	}
2070
2071	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
2072		drm_dbg_kms(&dev_priv->drm, "no device found\n");
2073		goto err;
2074	}
2075
2076	icl_dphy_param_init(intel_dsi);
2077
2078	icl_dsi_add_properties(intel_connector);
2079	return;
2080
2081err:
2082	drm_connector_cleanup(connector);
2083	drm_encoder_cleanup(&encoder->base);
2084	kfree(intel_dsi);
2085	kfree(intel_connector);
2086}