drivers/gpu/drm/i915/display/intel_display.c

/*
 * Copyright © 2006-2007 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *	Eric Anholt <eric@anholt.net>
 */

#include <linux/dma-resv.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string_helpers.h>

#include <drm/display/drm_dp_helper.h>
#include <drm/display/drm_dp_tunnel.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_uapi.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_rect.h>

#include "gem/i915_gem_lmem.h"
#include "gem/i915_gem_object.h"

#include "g4x_dp.h"
#include "g4x_hdmi.h"
#include "hsw_ips.h"
#include "i915_config.h"
#include "i915_drv.h"
#include "i915_reg.h"
#include "i915_utils.h"
#include "i9xx_plane.h"
#include "i9xx_wm.h"
#include "intel_atomic.h"
#include "intel_atomic_plane.h"
#include "intel_audio.h"
#include "intel_bw.h"
#include "intel_cdclk.h"
#include "intel_clock_gating.h"
#include "intel_color.h"
#include "intel_crt.h"
#include "intel_crtc.h"
#include "intel_crtc_state_dump.h"
#include "intel_ddi.h"
#include "intel_de.h"
#include "intel_display_driver.h"
#include "intel_display_power.h"
#include "intel_display_types.h"
#include "intel_dmc.h"
#include "intel_dp.h"
#include "intel_dp_link_training.h"
#include "intel_dp_mst.h"
#include "intel_dp_tunnel.h"
#include "intel_dpll.h"
#include "intel_dpll_mgr.h"
#include "intel_dpt.h"
#include "intel_dpt_common.h"
#include "intel_drrs.h"
#include "intel_dsb.h"
#include "intel_dsi.h"
#include "intel_dvo.h"
#include "intel_fb.h"
#include "intel_fbc.h"
#include "intel_fbdev.h"
#include "intel_fdi.h"
#include "intel_fifo_underrun.h"
#include "intel_frontbuffer.h"
#include "intel_hdmi.h"
#include "intel_hotplug.h"
#include "intel_link_bw.h"
#include "intel_lvds.h"
#include "intel_lvds_regs.h"
#include "intel_modeset_setup.h"
#include "intel_modeset_verify.h"
#include "intel_overlay.h"
#include "intel_panel.h"
#include "intel_pch_display.h"
#include "intel_pch_refclk.h"
#include "intel_pcode.h"
#include "intel_pipe_crc.h"
#include "intel_plane_initial.h"
#include "intel_pmdemand.h"
#include "intel_pps.h"
#include "intel_psr.h"
#include "intel_psr_regs.h"
#include "intel_sdvo.h"
#include "intel_snps_phy.h"
#include "intel_tc.h"
#include "intel_tv.h"
#include "intel_vblank.h"
#include "intel_vdsc.h"
#include "intel_vdsc_regs.h"
#include "intel_vga.h"
#include "intel_vrr.h"
#include "intel_wm.h"
#include "skl_scaler.h"
#include "skl_universal_plane.h"
#include "skl_watermark.h"
#include "vlv_dsi.h"
#include "vlv_dsi_pll.h"
#include "vlv_dsi_regs.h"
#include "vlv_sideband.h"

static void intel_set_transcoder_timings(const struct intel_crtc_state *crtc_state);
static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state);
static void hsw_set_transconf(const struct intel_crtc_state *crtc_state);
static void bdw_set_pipe_misc(const struct intel_crtc_state *crtc_state);

/* returns HPLL frequency in kHz */
int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
{
	int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };

	/* Obtain SKU information */
	hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
		CCK_FUSE_HPLL_FREQ_MASK;

	return vco_freq[hpll_freq] * 1000;
}

int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
		      const char *name, u32 reg, int ref_freq)
{
	u32 val;
	int divider;

	val = vlv_cck_read(dev_priv, reg);
	divider = val & CCK_FREQUENCY_VALUES;

	drm_WARN(&dev_priv->drm, (val & CCK_FREQUENCY_STATUS) !=
		 (divider << CCK_FREQUENCY_STATUS_SHIFT),
		 "%s change in progress\n", name);

	return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
}

int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
			   const char *name, u32 reg)
{
	int hpll;

	vlv_cck_get(dev_priv);

	if (dev_priv->hpll_freq == 0)
		dev_priv->hpll_freq = vlv_get_hpll_vco(dev_priv);

	hpll = vlv_get_cck_clock(dev_priv, name, reg, dev_priv->hpll_freq);

	vlv_cck_put(dev_priv);

	return hpll;
}

void intel_update_czclk(struct drm_i915_private *dev_priv)
{
	if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
		return;

	dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
						      CCK_CZ_CLOCK_CONTROL);

	drm_dbg(&dev_priv->drm, "CZ clock rate: %d kHz\n",
		dev_priv->czclk_freq);
}

static bool is_hdr_mode(const struct intel_crtc_state *crtc_state)
{
	return (crtc_state->active_planes &
		~(icl_hdr_plane_mask() | BIT(PLANE_CURSOR))) == 0;
}

/* WA Display #0827: Gen9:all */
static void
skl_wa_827(struct drm_i915_private *dev_priv, enum pipe pipe, bool enable)
{
	intel_de_rmw(dev_priv, CLKGATE_DIS_PSL(pipe),
		     DUPS1_GATING_DIS | DUPS2_GATING_DIS,
		     enable ? DUPS1_GATING_DIS | DUPS2_GATING_DIS : 0);
}

/* Wa_2006604312:icl,ehl */
static void
icl_wa_scalerclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
		       bool enable)
{
	intel_de_rmw(dev_priv, CLKGATE_DIS_PSL(pipe),
		     DPFR_GATING_DIS,
		     enable ? DPFR_GATING_DIS : 0);
}

/* Wa_1604331009:icl,jsl,ehl */
static void
icl_wa_cursorclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
		       bool enable)
{
	intel_de_rmw(dev_priv, CLKGATE_DIS_PSL(pipe),
		     CURSOR_GATING_DIS,
		     enable ? CURSOR_GATING_DIS : 0);
}

static bool
is_trans_port_sync_slave(const struct intel_crtc_state *crtc_state)
{
	return crtc_state->master_transcoder != INVALID_TRANSCODER;
}

bool
is_trans_port_sync_master(const struct intel_crtc_state *crtc_state)
{
	return crtc_state->sync_mode_slaves_mask != 0;
}

bool
is_trans_port_sync_mode(const struct intel_crtc_state *crtc_state)
{
	return is_trans_port_sync_master(crtc_state) ||
		is_trans_port_sync_slave(crtc_state);
}

static enum pipe bigjoiner_master_pipe(const struct intel_crtc_state *crtc_state)
{
	return ffs(crtc_state->bigjoiner_pipes) - 1;
}

u8 intel_crtc_bigjoiner_slave_pipes(const struct intel_crtc_state *crtc_state)
{
	if (crtc_state->bigjoiner_pipes)
		return crtc_state->bigjoiner_pipes & ~BIT(bigjoiner_master_pipe(crtc_state));
	else
		return 0;
}

bool intel_crtc_is_bigjoiner_slave(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);

	return crtc_state->bigjoiner_pipes &&
		crtc->pipe != bigjoiner_master_pipe(crtc_state);
}

bool intel_crtc_is_bigjoiner_master(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);

	return crtc_state->bigjoiner_pipes &&
		crtc->pipe == bigjoiner_master_pipe(crtc_state);
}

static int intel_bigjoiner_num_pipes(const struct intel_crtc_state *crtc_state)
{
	return hweight8(crtc_state->bigjoiner_pipes);
}

struct intel_crtc *intel_master_crtc(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);

	if (intel_crtc_is_bigjoiner_slave(crtc_state))
		return intel_crtc_for_pipe(i915, bigjoiner_master_pipe(crtc_state));
	else
		return to_intel_crtc(crtc_state->uapi.crtc);
}

static void
intel_wait_for_pipe_off(const struct intel_crtc_state *old_crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	if (DISPLAY_VER(dev_priv) >= 4) {
		enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;

		/* Wait for the Pipe State to go off */
		if (intel_de_wait_for_clear(dev_priv, TRANSCONF(cpu_transcoder),
					    TRANSCONF_STATE_ENABLE, 100))
			drm_WARN(&dev_priv->drm, 1, "pipe_off wait timed out\n");
	} else {
		intel_wait_for_pipe_scanline_stopped(crtc);
	}
}

void assert_transcoder(struct drm_i915_private *dev_priv,
		       enum transcoder cpu_transcoder, bool state)
{
	bool cur_state;
	enum intel_display_power_domain power_domain;
	intel_wakeref_t wakeref;

	/* we keep both pipes enabled on 830 */
	if (IS_I830(dev_priv))
		state = true;

	power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
	if (wakeref) {
		u32 val = intel_de_read(dev_priv, TRANSCONF(cpu_transcoder));
		cur_state = !!(val & TRANSCONF_ENABLE);

		intel_display_power_put(dev_priv, power_domain, wakeref);
	} else {
		cur_state = false;
	}

	I915_STATE_WARN(dev_priv, cur_state != state,
			"transcoder %s assertion failure (expected %s, current %s)\n",
			transcoder_name(cpu_transcoder), str_on_off(state),
			str_on_off(cur_state));
}

static void assert_plane(struct intel_plane *plane, bool state)
{
	struct drm_i915_private *i915 = to_i915(plane->base.dev);
	enum pipe pipe;
	bool cur_state;

	cur_state = plane->get_hw_state(plane, &pipe);

	I915_STATE_WARN(i915, cur_state != state,
			"%s assertion failure (expected %s, current %s)\n",
			plane->base.name, str_on_off(state),
			str_on_off(cur_state));
}

#define assert_plane_enabled(p) assert_plane(p, true)
#define assert_plane_disabled(p) assert_plane(p, false)

static void assert_planes_disabled(struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	struct intel_plane *plane;

	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane)
		assert_plane_disabled(plane);
}

void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
			 struct intel_digital_port *dig_port,
			 unsigned int expected_mask)
{
	u32 port_mask;
	i915_reg_t dpll_reg;

	switch (dig_port->base.port) {
	default:
		MISSING_CASE(dig_port->base.port);
		fallthrough;
	case PORT_B:
		port_mask = DPLL_PORTB_READY_MASK;
		dpll_reg = DPLL(0);
		break;
	case PORT_C:
		port_mask = DPLL_PORTC_READY_MASK;
		dpll_reg = DPLL(0);
		expected_mask <<= 4;
		break;
	case PORT_D:
		port_mask = DPLL_PORTD_READY_MASK;
		dpll_reg = DPIO_PHY_STATUS;
		break;
	}

	if (intel_de_wait_for_register(dev_priv, dpll_reg,
				       port_mask, expected_mask, 1000))
		drm_WARN(&dev_priv->drm, 1,
			 "timed out waiting for [ENCODER:%d:%s] port ready: got 0x%x, expected 0x%x\n",
			 dig_port->base.base.base.id, dig_port->base.base.name,
			 intel_de_read(dev_priv, dpll_reg) & port_mask,
			 expected_mask);
}

void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
	enum pipe pipe = crtc->pipe;
	u32 val;

	drm_dbg_kms(&dev_priv->drm, "enabling pipe %c\n", pipe_name(pipe));

	assert_planes_disabled(crtc);

	/*
	 * A pipe without a PLL won't actually be able to drive bits from
	 * a plane.  On ILK+ the pipe PLLs are integrated, so we don't
	 * need the check.
	 */
	if (HAS_GMCH(dev_priv)) {
		if (intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI))
			assert_dsi_pll_enabled(dev_priv);
		else
			assert_pll_enabled(dev_priv, pipe);
	} else {
		if (new_crtc_state->has_pch_encoder) {
			/* if driving the PCH, we need FDI enabled */
			assert_fdi_rx_pll_enabled(dev_priv,
						  intel_crtc_pch_transcoder(crtc));
			assert_fdi_tx_pll_enabled(dev_priv,
						  (enum pipe) cpu_transcoder);
		}
		/* FIXME: assert CPU port conditions for SNB+ */
	}

	/* Wa_22012358565:adl-p */
	if (DISPLAY_VER(dev_priv) == 13)
		intel_de_rmw(dev_priv, PIPE_ARB_CTL(pipe),
			     0, PIPE_ARB_USE_PROG_SLOTS);

	val = intel_de_read(dev_priv, TRANSCONF(cpu_transcoder));
	if (val & TRANSCONF_ENABLE) {
		/* we keep both pipes enabled on 830 */
		drm_WARN_ON(&dev_priv->drm, !IS_I830(dev_priv));
		return;
	}

	intel_de_write(dev_priv, TRANSCONF(cpu_transcoder),
		       val | TRANSCONF_ENABLE);
	intel_de_posting_read(dev_priv, TRANSCONF(cpu_transcoder));

	/*
	 * Until the pipe starts PIPEDSL reads will return a stale value,
	 * which causes an apparent vblank timestamp jump when PIPEDSL
	 * resets to its proper value. That also messes up the frame count
	 * when it's derived from the timestamps. So let's wait for the
	 * pipe to start properly before we call drm_crtc_vblank_on()
	 */
	if (intel_crtc_max_vblank_count(new_crtc_state) == 0)
		intel_wait_for_pipe_scanline_moving(crtc);
}

void intel_disable_transcoder(const struct intel_crtc_state *old_crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
	enum pipe pipe = crtc->pipe;
	u32 val;

	drm_dbg_kms(&dev_priv->drm, "disabling pipe %c\n", pipe_name(pipe));

	/*
	 * Make sure planes won't keep trying to pump pixels to us,
	 * or we might hang the display.
	 */
	assert_planes_disabled(crtc);

	val = intel_de_read(dev_priv, TRANSCONF(cpu_transcoder));
	if ((val & TRANSCONF_ENABLE) == 0)
		return;

	/*
	 * Double wide has implications for planes
	 * so best keep it disabled when not needed.
	 */
	if (old_crtc_state->double_wide)
		val &= ~TRANSCONF_DOUBLE_WIDE;

	/* Don't disable pipe or pipe PLLs if needed */
	if (!IS_I830(dev_priv))
		val &= ~TRANSCONF_ENABLE;

	intel_de_write(dev_priv, TRANSCONF(cpu_transcoder), val);

	if (DISPLAY_VER(dev_priv) >= 12)
		intel_de_rmw(dev_priv, hsw_chicken_trans_reg(dev_priv, cpu_transcoder),
			     FECSTALL_DIS_DPTSTREAM_DPTTG, 0);

	if ((val & TRANSCONF_ENABLE) == 0)
		intel_wait_for_pipe_off(old_crtc_state);
}

unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
{
	unsigned int size = 0;
	int i;

	for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
		size += rot_info->plane[i].dst_stride * rot_info->plane[i].width;

	return size;
}

unsigned int intel_remapped_info_size(const struct intel_remapped_info *rem_info)
{
	unsigned int size = 0;
	int i;

	for (i = 0 ; i < ARRAY_SIZE(rem_info->plane); i++) {
		unsigned int plane_size;

		if (rem_info->plane[i].linear)
			plane_size = rem_info->plane[i].size;
		else
			plane_size = rem_info->plane[i].dst_stride * rem_info->plane[i].height;

		if (plane_size == 0)
			continue;

		if (rem_info->plane_alignment)
			size = ALIGN(size, rem_info->plane_alignment);

		size += plane_size;
	}

	return size;
}

bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
{
	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);

	return DISPLAY_VER(dev_priv) < 4 ||
		(plane->fbc &&
		 plane_state->view.gtt.type == I915_GTT_VIEW_NORMAL);
}

/*
 * Convert the x/y offsets into a linear offset.
 * Only valid with 0/180 degree rotation, which is fine since linear
 * offset is only used with linear buffers on pre-hsw and tiled buffers
 * with gen2/3, and 90/270 degree rotations isn't supported on any of them.
 */
u32 intel_fb_xy_to_linear(int x, int y,
			  const struct intel_plane_state *state,
			  int color_plane)
{
	const struct drm_framebuffer *fb = state->hw.fb;
	unsigned int cpp = fb->format->cpp[color_plane];
	unsigned int pitch = state->view.color_plane[color_plane].mapping_stride;

	return y * pitch + x * cpp;
}

/*
 * Add the x/y offsets derived from fb->offsets[] to the user
 * specified plane src x/y offsets. The resulting x/y offsets
 * specify the start of scanout from the beginning of the gtt mapping.
 */
void intel_add_fb_offsets(int *x, int *y,
			  const struct intel_plane_state *state,
			  int color_plane)

{
	*x += state->view.color_plane[color_plane].x;
	*y += state->view.color_plane[color_plane].y;
}

u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
			      u32 pixel_format, u64 modifier)
{
	struct intel_crtc *crtc;
	struct intel_plane *plane;

	if (!HAS_DISPLAY(dev_priv))
		return 0;

	/*
	 * We assume the primary plane for pipe A has
	 * the highest stride limits of them all,
	 * if in case pipe A is disabled, use the first pipe from pipe_mask.
	 */
	crtc = intel_first_crtc(dev_priv);
	if (!crtc)
		return 0;

	plane = to_intel_plane(crtc->base.primary);

	return plane->max_stride(plane, pixel_format, modifier,
				 DRM_MODE_ROTATE_0);
}

void intel_set_plane_visible(struct intel_crtc_state *crtc_state,
			     struct intel_plane_state *plane_state,
			     bool visible)
{
	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);

	plane_state->uapi.visible = visible;

	if (visible)
		crtc_state->uapi.plane_mask |= drm_plane_mask(&plane->base);
	else
		crtc_state->uapi.plane_mask &= ~drm_plane_mask(&plane->base);
}

void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
	struct drm_plane *plane;

	/*
	 * Active_planes aliases if multiple "primary" or cursor planes
	 * have been used on the same (or wrong) pipe. plane_mask uses
	 * unique ids, hence we can use that to reconstruct active_planes.
	 */
	crtc_state->enabled_planes = 0;
	crtc_state->active_planes = 0;

	drm_for_each_plane_mask(plane, &dev_priv->drm,
				crtc_state->uapi.plane_mask) {
		crtc_state->enabled_planes |= BIT(to_intel_plane(plane)->id);
		crtc_state->active_planes |= BIT(to_intel_plane(plane)->id);
	}
}

void intel_plane_disable_noatomic(struct intel_crtc *crtc,
				  struct intel_plane *plane)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	struct intel_crtc_state *crtc_state =
		to_intel_crtc_state(crtc->base.state);
	struct intel_plane_state *plane_state =
		to_intel_plane_state(plane->base.state);

	drm_dbg_kms(&dev_priv->drm,
		    "Disabling [PLANE:%d:%s] on [CRTC:%d:%s]\n",
		    plane->base.base.id, plane->base.name,
		    crtc->base.base.id, crtc->base.name);

	intel_set_plane_visible(crtc_state, plane_state, false);
	intel_plane_fixup_bitmasks(crtc_state);
	crtc_state->data_rate[plane->id] = 0;
	crtc_state->data_rate_y[plane->id] = 0;
	crtc_state->rel_data_rate[plane->id] = 0;
	crtc_state->rel_data_rate_y[plane->id] = 0;
	crtc_state->min_cdclk[plane->id] = 0;

	if ((crtc_state->active_planes & ~BIT(PLANE_CURSOR)) == 0 &&
	    hsw_ips_disable(crtc_state)) {
		crtc_state->ips_enabled = false;
		intel_crtc_wait_for_next_vblank(crtc);
	}

	/*
	 * Vblank time updates from the shadow to live plane control register
	 * are blocked if the memory self-refresh mode is active at that
	 * moment. So to make sure the plane gets truly disabled, disable
	 * first the self-refresh mode. The self-refresh enable bit in turn
	 * will be checked/applied by the HW only at the next frame start
	 * event which is after the vblank start event, so we need to have a
	 * wait-for-vblank between disabling the plane and the pipe.
	 */
	if (HAS_GMCH(dev_priv) &&
	    intel_set_memory_cxsr(dev_priv, false))
		intel_crtc_wait_for_next_vblank(crtc);

	/*
	 * Gen2 reports pipe underruns whenever all planes are disabled.
	 * So disable underrun reporting before all the planes get disabled.
	 */
	if (DISPLAY_VER(dev_priv) == 2 && !crtc_state->active_planes)
		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);

	intel_plane_disable_arm(plane, crtc_state);
	intel_crtc_wait_for_next_vblank(crtc);
}

unsigned int
intel_plane_fence_y_offset(const struct intel_plane_state *plane_state)
{
	int x = 0, y = 0;

	intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
					  plane_state->view.color_plane[0].offset, 0);

	return y;
}

static void icl_set_pipe_chicken(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;
	u32 tmp;

	tmp = intel_de_read(dev_priv, PIPE_CHICKEN(pipe));

	/*
	 * Display WA #1153: icl
	 * enable hardware to bypass the alpha math
	 * and rounding for per-pixel values 00 and 0xff
	 */
	tmp |= PER_PIXEL_ALPHA_BYPASS_EN;
	/*
	 * Display WA # 1605353570: icl
	 * Set the pixel rounding bit to 1 for allowing
	 * passthrough of Frame buffer pixels unmodified
	 * across pipe
	 */
	tmp |= PIXEL_ROUNDING_TRUNC_FB_PASSTHRU;

	/*
	 * Underrun recovery must always be disabled on display 13+.
	 * DG2 chicken bit meaning is inverted compared to other platforms.
	 */
	if (IS_DG2(dev_priv))
		tmp &= ~UNDERRUN_RECOVERY_ENABLE_DG2;
	else if (DISPLAY_VER(dev_priv) >= 13)
		tmp |= UNDERRUN_RECOVERY_DISABLE_ADLP;

	/* Wa_14010547955:dg2 */
	if (IS_DG2(dev_priv))
		tmp |= DG2_RENDER_CCSTAG_4_3_EN;

	intel_de_write(dev_priv, PIPE_CHICKEN(pipe), tmp);
}

bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
{
	struct drm_crtc *crtc;
	bool cleanup_done;

	drm_for_each_crtc(crtc, &dev_priv->drm) {
		struct drm_crtc_commit *commit;
		spin_lock(&crtc->commit_lock);
		commit = list_first_entry_or_null(&crtc->commit_list,
						  struct drm_crtc_commit, commit_entry);
		cleanup_done = commit ?
			try_wait_for_completion(&commit->cleanup_done) : true;
		spin_unlock(&crtc->commit_lock);

		if (cleanup_done)
			continue;

		intel_crtc_wait_for_next_vblank(to_intel_crtc(crtc));

		return true;
	}

	return false;
}

/*
 * Finds the encoder associated with the given CRTC. This can only be
 * used when we know that the CRTC isn't feeding multiple encoders!
 */
struct intel_encoder *
intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
			   const struct intel_crtc_state *crtc_state)
{
	const struct drm_connector_state *connector_state;
	const struct drm_connector *connector;
	struct intel_encoder *encoder = NULL;
	struct intel_crtc *master_crtc;
	int num_encoders = 0;
	int i;

	master_crtc = intel_master_crtc(crtc_state);

	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
		if (connector_state->crtc != &master_crtc->base)
			continue;

		encoder = to_intel_encoder(connector_state->best_encoder);
		num_encoders++;
	}

	drm_WARN(state->base.dev, num_encoders != 1,
		 "%d encoders for pipe %c\n",
		 num_encoders, pipe_name(master_crtc->pipe));

	return encoder;
}

static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	const struct drm_rect *dst = &crtc_state->pch_pfit.dst;
	enum pipe pipe = crtc->pipe;
	int width = drm_rect_width(dst);
	int height = drm_rect_height(dst);
	int x = dst->x1;
	int y = dst->y1;

	if (!crtc_state->pch_pfit.enabled)
		return;

	/* Force use of hard-coded filter coefficients
	 * as some pre-programmed values are broken,
	 * e.g. x201.
	 */
	if (IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv))
		intel_de_write_fw(dev_priv, PF_CTL(pipe), PF_ENABLE |
				  PF_FILTER_MED_3x3 | PF_PIPE_SEL_IVB(pipe));
	else
		intel_de_write_fw(dev_priv, PF_CTL(pipe), PF_ENABLE |
				  PF_FILTER_MED_3x3);
	intel_de_write_fw(dev_priv, PF_WIN_POS(pipe),
			  PF_WIN_XPOS(x) | PF_WIN_YPOS(y));
	intel_de_write_fw(dev_priv, PF_WIN_SZ(pipe),
			  PF_WIN_XSIZE(width) | PF_WIN_YSIZE(height));
}

static void intel_crtc_dpms_overlay_disable(struct intel_crtc *crtc)
{
	if (crtc->overlay)
		(void) intel_overlay_switch_off(crtc->overlay);

	/* Let userspace switch the overlay on again. In most cases userspace
	 * has to recompute where to put it anyway.
	 */
}

static bool needs_nv12_wa(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);

	if (!crtc_state->nv12_planes)
		return false;

	/* WA Display #0827: Gen9:all */
	if (DISPLAY_VER(dev_priv) == 9)
		return true;

	return false;
}

static bool needs_scalerclk_wa(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);

	/* Wa_2006604312:icl,ehl */
	if (crtc_state->scaler_state.scaler_users > 0 && DISPLAY_VER(dev_priv) == 11)
		return true;

	return false;
}

static bool needs_cursorclk_wa(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);

	/* Wa_1604331009:icl,jsl,ehl */
	if (is_hdr_mode(crtc_state) &&
	    crtc_state->active_planes & BIT(PLANE_CURSOR) &&
	    DISPLAY_VER(dev_priv) == 11)
		return true;

	return false;
}

static void intel_async_flip_vtd_wa(struct drm_i915_private *i915,
				    enum pipe pipe, bool enable)
{
	if (DISPLAY_VER(i915) == 9) {
		/*
		 * "Plane N strech max must be programmed to 11b (x1)
		 *  when Async flips are enabled on that plane."
		 */
		intel_de_rmw(i915, CHICKEN_PIPESL_1(pipe),
			     SKL_PLANE1_STRETCH_MAX_MASK,
			     enable ? SKL_PLANE1_STRETCH_MAX_X1 : SKL_PLANE1_STRETCH_MAX_X8);
	} else {
		/* Also needed on HSW/BDW albeit undocumented */
		intel_de_rmw(i915, CHICKEN_PIPESL_1(pipe),
			     HSW_PRI_STRETCH_MAX_MASK,
			     enable ? HSW_PRI_STRETCH_MAX_X1 : HSW_PRI_STRETCH_MAX_X8);
	}
}

static bool needs_async_flip_vtd_wa(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);

	return crtc_state->uapi.async_flip && i915_vtd_active(i915) &&
		(DISPLAY_VER(i915) == 9 || IS_BROADWELL(i915) || IS_HASWELL(i915));
}

static void intel_encoders_audio_enable(struct intel_atomic_state *state,
					struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	const struct drm_connector_state *conn_state;
	struct drm_connector *conn;
	int i;

	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(conn_state->best_encoder);

		if (conn_state->crtc != &crtc->base)
			continue;

		if (encoder->audio_enable)
			encoder->audio_enable(encoder, crtc_state, conn_state);
	}
}

static void intel_encoders_audio_disable(struct intel_atomic_state *state,
					 struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct drm_connector_state *old_conn_state;
	struct drm_connector *conn;
	int i;

	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(old_conn_state->best_encoder);

		if (old_conn_state->crtc != &crtc->base)
			continue;

		if (encoder->audio_disable)
			encoder->audio_disable(encoder, old_crtc_state, old_conn_state);
	}
}

#define is_enabling(feature, old_crtc_state, new_crtc_state) \
	((!(old_crtc_state)->feature || intel_crtc_needs_modeset(new_crtc_state)) && \
	 (new_crtc_state)->feature)
#define is_disabling(feature, old_crtc_state, new_crtc_state) \
	((old_crtc_state)->feature && \
	 (!(new_crtc_state)->feature || intel_crtc_needs_modeset(new_crtc_state)))

static bool planes_enabling(const struct intel_crtc_state *old_crtc_state,
			    const struct intel_crtc_state *new_crtc_state)
{
	if (!new_crtc_state->hw.active)
		return false;

	return is_enabling(active_planes, old_crtc_state, new_crtc_state);
}

static bool planes_disabling(const struct intel_crtc_state *old_crtc_state,
			     const struct intel_crtc_state *new_crtc_state)
{
	if (!old_crtc_state->hw.active)
		return false;

	return is_disabling(active_planes, old_crtc_state, new_crtc_state);
}

static bool vrr_params_changed(const struct intel_crtc_state *old_crtc_state,
			       const struct intel_crtc_state *new_crtc_state)
{
	return old_crtc_state->vrr.flipline != new_crtc_state->vrr.flipline ||
		old_crtc_state->vrr.vmin != new_crtc_state->vrr.vmin ||
		old_crtc_state->vrr.vmax != new_crtc_state->vrr.vmax ||
		old_crtc_state->vrr.guardband != new_crtc_state->vrr.guardband ||
		old_crtc_state->vrr.pipeline_full != new_crtc_state->vrr.pipeline_full;
}

static bool vrr_enabling(const struct intel_crtc_state *old_crtc_state,
			 const struct intel_crtc_state *new_crtc_state)
{
	if (!new_crtc_state->hw.active)
		return false;

	return is_enabling(vrr.enable, old_crtc_state, new_crtc_state) ||
		(new_crtc_state->vrr.enable &&
		 (new_crtc_state->update_m_n || new_crtc_state->update_lrr ||
		  vrr_params_changed(old_crtc_state, new_crtc_state)));
}

static bool vrr_disabling(const struct intel_crtc_state *old_crtc_state,
			  const struct intel_crtc_state *new_crtc_state)
{
	if (!old_crtc_state->hw.active)
		return false;

	return is_disabling(vrr.enable, old_crtc_state, new_crtc_state) ||
		(old_crtc_state->vrr.enable &&
		 (new_crtc_state->update_m_n || new_crtc_state->update_lrr ||
		  vrr_params_changed(old_crtc_state, new_crtc_state)));
}

static bool audio_enabling(const struct intel_crtc_state *old_crtc_state,
			   const struct intel_crtc_state *new_crtc_state)
{
	if (!new_crtc_state->hw.active)
		return false;

	return is_enabling(has_audio, old_crtc_state, new_crtc_state) ||
		(new_crtc_state->has_audio &&
		 memcmp(old_crtc_state->eld, new_crtc_state->eld, MAX_ELD_BYTES) != 0);
}

static bool audio_disabling(const struct intel_crtc_state *old_crtc_state,
			    const struct intel_crtc_state *new_crtc_state)
{
	if (!old_crtc_state->hw.active)
		return false;

	return is_disabling(has_audio, old_crtc_state, new_crtc_state) ||
		(old_crtc_state->has_audio &&
		 memcmp(old_crtc_state->eld, new_crtc_state->eld, MAX_ELD_BYTES) != 0);
}

#undef is_disabling
#undef is_enabling

static void intel_post_plane_update(struct intel_atomic_state *state,
				    struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	enum pipe pipe = crtc->pipe;

	intel_psr_post_plane_update(state, crtc);

	intel_frontbuffer_flip(dev_priv, new_crtc_state->fb_bits);

	if (new_crtc_state->update_wm_post && new_crtc_state->hw.active)
		intel_update_watermarks(dev_priv);

	intel_fbc_post_update(state, crtc);

	if (needs_async_flip_vtd_wa(old_crtc_state) &&
	    !needs_async_flip_vtd_wa(new_crtc_state))
		intel_async_flip_vtd_wa(dev_priv, pipe, false);

	if (needs_nv12_wa(old_crtc_state) &&
	    !needs_nv12_wa(new_crtc_state))
		skl_wa_827(dev_priv, pipe, false);

	if (needs_scalerclk_wa(old_crtc_state) &&
	    !needs_scalerclk_wa(new_crtc_state))
		icl_wa_scalerclkgating(dev_priv, pipe, false);

	if (needs_cursorclk_wa(old_crtc_state) &&
	    !needs_cursorclk_wa(new_crtc_state))
		icl_wa_cursorclkgating(dev_priv, pipe, false);

	if (intel_crtc_needs_color_update(new_crtc_state))
		intel_color_post_update(new_crtc_state);

	if (audio_enabling(old_crtc_state, new_crtc_state))
		intel_encoders_audio_enable(state, crtc);
}

static void intel_crtc_enable_flip_done(struct intel_atomic_state *state,
					struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	u8 update_planes = crtc_state->update_planes;
	const struct intel_plane_state __maybe_unused *plane_state;
	struct intel_plane *plane;
	int i;

	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
		if (plane->pipe == crtc->pipe &&
		    update_planes & BIT(plane->id))
			plane->enable_flip_done(plane);
	}
}

static void intel_crtc_disable_flip_done(struct intel_atomic_state *state,
					 struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	u8 update_planes = crtc_state->update_planes;
	const struct intel_plane_state __maybe_unused *plane_state;
	struct intel_plane *plane;
	int i;

	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
		if (plane->pipe == crtc->pipe &&
		    update_planes & BIT(plane->id))
			plane->disable_flip_done(plane);
	}
}

static void intel_crtc_async_flip_disable_wa(struct intel_atomic_state *state,
					     struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	u8 disable_async_flip_planes = old_crtc_state->async_flip_planes &
				       ~new_crtc_state->async_flip_planes;
	const struct intel_plane_state *old_plane_state;
	struct intel_plane *plane;
	bool need_vbl_wait = false;
	int i;

	for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
		if (plane->need_async_flip_disable_wa &&
		    plane->pipe == crtc->pipe &&
		    disable_async_flip_planes & BIT(plane->id)) {
			/*
			 * Apart from the async flip bit we want to
			 * preserve the old state for the plane.
			 */
			plane->async_flip(plane, old_crtc_state,
					  old_plane_state, false);
			need_vbl_wait = true;
		}
	}

	if (need_vbl_wait)
		intel_crtc_wait_for_next_vblank(crtc);
}

static void intel_pre_plane_update(struct intel_atomic_state *state,
				   struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	enum pipe pipe = crtc->pipe;

	if (vrr_disabling(old_crtc_state, new_crtc_state)) {
		intel_vrr_disable(old_crtc_state);
		intel_crtc_update_active_timings(old_crtc_state, false);
	}

	if (audio_disabling(old_crtc_state, new_crtc_state))
		intel_encoders_audio_disable(state, crtc);

	intel_drrs_deactivate(old_crtc_state);

	intel_psr_pre_plane_update(state, crtc);

	if (hsw_ips_pre_update(state, crtc))
		intel_crtc_wait_for_next_vblank(crtc);

	if (intel_fbc_pre_update(state, crtc))
		intel_crtc_wait_for_next_vblank(crtc);

	if (!needs_async_flip_vtd_wa(old_crtc_state) &&
	    needs_async_flip_vtd_wa(new_crtc_state))
		intel_async_flip_vtd_wa(dev_priv, pipe, true);

	/* Display WA 827 */
	if (!needs_nv12_wa(old_crtc_state) &&
	    needs_nv12_wa(new_crtc_state))
		skl_wa_827(dev_priv, pipe, true);

	/* Wa_2006604312:icl,ehl */
	if (!needs_scalerclk_wa(old_crtc_state) &&
	    needs_scalerclk_wa(new_crtc_state))
		icl_wa_scalerclkgating(dev_priv, pipe, true);

	/* Wa_1604331009:icl,jsl,ehl */
	if (!needs_cursorclk_wa(old_crtc_state) &&
	    needs_cursorclk_wa(new_crtc_state))
		icl_wa_cursorclkgating(dev_priv, pipe, true);

	/*
	 * Vblank time updates from the shadow to live plane control register
	 * are blocked if the memory self-refresh mode is active at that
	 * moment. So to make sure the plane gets truly disabled, disable
	 * first the self-refresh mode. The self-refresh enable bit in turn
	 * will be checked/applied by the HW only at the next frame start
	 * event which is after the vblank start event, so we need to have a
	 * wait-for-vblank between disabling the plane and the pipe.
	 */
	if (HAS_GMCH(dev_priv) && old_crtc_state->hw.active &&
	    new_crtc_state->disable_cxsr && intel_set_memory_cxsr(dev_priv, false))
		intel_crtc_wait_for_next_vblank(crtc);

	/*
	 * IVB workaround: must disable low power watermarks for at least
	 * one frame before enabling scaling.  LP watermarks can be re-enabled
	 * when scaling is disabled.
	 *
	 * WaCxSRDisabledForSpriteScaling:ivb
	 */
	if (old_crtc_state->hw.active &&
	    new_crtc_state->disable_lp_wm && ilk_disable_lp_wm(dev_priv))
		intel_crtc_wait_for_next_vblank(crtc);

	/*
	 * If we're doing a modeset we don't need to do any
	 * pre-vblank watermark programming here.
	 */
	if (!intel_crtc_needs_modeset(new_crtc_state)) {
		/*
		 * For platforms that support atomic watermarks, program the
		 * 'intermediate' watermarks immediately.  On pre-gen9 platforms, these
		 * will be the intermediate values that are safe for both pre- and
		 * post- vblank; when vblank happens, the 'active' values will be set
		 * to the final 'target' values and we'll do this again to get the
		 * optimal watermarks.  For gen9+ platforms, the values we program here
		 * will be the final target values which will get automatically latched
		 * at vblank time; no further programming will be necessary.
		 *
		 * If a platform hasn't been transitioned to atomic watermarks yet,
		 * we'll continue to update watermarks the old way, if flags tell
		 * us to.
		 */
		if (!intel_initial_watermarks(state, crtc))
			if (new_crtc_state->update_wm_pre)
				intel_update_watermarks(dev_priv);
	}

	/*
	 * Gen2 reports pipe underruns whenever all planes are disabled.
	 * So disable underrun reporting before all the planes get disabled.
	 *
	 * We do this after .initial_watermarks() so that we have a
	 * chance of catching underruns with the intermediate watermarks
	 * vs. the old plane configuration.
	 */
	if (DISPLAY_VER(dev_priv) == 2 && planes_disabling(old_crtc_state, new_crtc_state))
		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);

	/*
	 * WA for platforms where async address update enable bit
	 * is double buffered and only latched at start of vblank.
	 */
	if (old_crtc_state->async_flip_planes & ~new_crtc_state->async_flip_planes)
		intel_crtc_async_flip_disable_wa(state, crtc);
}

static void intel_crtc_disable_planes(struct intel_atomic_state *state,
				      struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	unsigned int update_mask = new_crtc_state->update_planes;
	const struct intel_plane_state *old_plane_state;
	struct intel_plane *plane;
	unsigned fb_bits = 0;
	int i;

	intel_crtc_dpms_overlay_disable(crtc);

	for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
		if (crtc->pipe != plane->pipe ||
		    !(update_mask & BIT(plane->id)))
			continue;

		intel_plane_disable_arm(plane, new_crtc_state);

		if (old_plane_state->uapi.visible)
			fb_bits |= plane->frontbuffer_bit;
	}

	intel_frontbuffer_flip(dev_priv, fb_bits);
}

static void intel_encoders_update_prepare(struct intel_atomic_state *state)
{
	struct drm_i915_private *i915 = to_i915(state->base.dev);
	struct intel_crtc_state *new_crtc_state, *old_crtc_state;
	struct intel_crtc *crtc;
	int i;

	/*
	 * Make sure the DPLL state is up-to-date for fastset TypeC ports after non-blocking commits.
	 * TODO: Update the DPLL state for all cases in the encoder->update_prepare() hook.
	 */
	if (i915->display.dpll.mgr) {
		for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
			if (intel_crtc_needs_modeset(new_crtc_state))
				continue;

			new_crtc_state->shared_dpll = old_crtc_state->shared_dpll;
			new_crtc_state->dpll_hw_state = old_crtc_state->dpll_hw_state;
		}
	}
}

static void intel_encoders_pre_pll_enable(struct intel_atomic_state *state,
					  struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	const struct drm_connector_state *conn_state;
	struct drm_connector *conn;
	int i;

	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(conn_state->best_encoder);

		if (conn_state->crtc != &crtc->base)
			continue;

		if (encoder->pre_pll_enable)
			encoder->pre_pll_enable(state, encoder,
						crtc_state, conn_state);
	}
}

static void intel_encoders_pre_enable(struct intel_atomic_state *state,
				      struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	const struct drm_connector_state *conn_state;
	struct drm_connector *conn;
	int i;

	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(conn_state->best_encoder);

		if (conn_state->crtc != &crtc->base)
			continue;

		if (encoder->pre_enable)
			encoder->pre_enable(state, encoder,
					    crtc_state, conn_state);
	}
}

static void intel_encoders_enable(struct intel_atomic_state *state,
				  struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	const struct drm_connector_state *conn_state;
	struct drm_connector *conn;
	int i;

	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(conn_state->best_encoder);

		if (conn_state->crtc != &crtc->base)
			continue;

		if (encoder->enable)
			encoder->enable(state, encoder,
					crtc_state, conn_state);
		intel_opregion_notify_encoder(encoder, true);
	}
}

static void intel_encoders_disable(struct intel_atomic_state *state,
				   struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct drm_connector_state *old_conn_state;
	struct drm_connector *conn;
	int i;

	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(old_conn_state->best_encoder);

		if (old_conn_state->crtc != &crtc->base)
			continue;

		intel_opregion_notify_encoder(encoder, false);
		if (encoder->disable)
			encoder->disable(state, encoder,
					 old_crtc_state, old_conn_state);
	}
}

static void intel_encoders_post_disable(struct intel_atomic_state *state,
					struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct drm_connector_state *old_conn_state;
	struct drm_connector *conn;
	int i;

	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(old_conn_state->best_encoder);

		if (old_conn_state->crtc != &crtc->base)
			continue;

		if (encoder->post_disable)
			encoder->post_disable(state, encoder,
					      old_crtc_state, old_conn_state);
	}
}

static void intel_encoders_post_pll_disable(struct intel_atomic_state *state,
					    struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	const struct drm_connector_state *old_conn_state;
	struct drm_connector *conn;
	int i;

	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(old_conn_state->best_encoder);

		if (old_conn_state->crtc != &crtc->base)
			continue;

		if (encoder->post_pll_disable)
			encoder->post_pll_disable(state, encoder,
						  old_crtc_state, old_conn_state);
	}
}

static void intel_encoders_update_pipe(struct intel_atomic_state *state,
				       struct intel_crtc *crtc)
{
	const struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	const struct drm_connector_state *conn_state;
	struct drm_connector *conn;
	int i;

	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
		struct intel_encoder *encoder =
			to_intel_encoder(conn_state->best_encoder);

		if (conn_state->crtc != &crtc->base)
			continue;

		if (encoder->update_pipe)
			encoder->update_pipe(state, encoder,
					     crtc_state, conn_state);
	}
}

static void intel_disable_primary_plane(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct intel_plane *plane = to_intel_plane(crtc->base.primary);

	plane->disable_arm(plane, crtc_state);
}

static void ilk_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;

	if (crtc_state->has_pch_encoder) {
		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
					       &crtc_state->fdi_m_n);
	} else if (intel_crtc_has_dp_encoder(crtc_state)) {
		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
					       &crtc_state->dp_m_n);
		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
					       &crtc_state->dp_m2_n2);
	}

	intel_set_transcoder_timings(crtc_state);

	ilk_set_pipeconf(crtc_state);
}

static void ilk_crtc_enable(struct intel_atomic_state *state,
			    struct intel_crtc *crtc)
{
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
		return;

	/*
	 * Sometimes spurious CPU pipe underruns happen during FDI
	 * training, at least with VGA+HDMI cloning. Suppress them.
	 *
	 * On ILK we get an occasional spurious CPU pipe underruns
	 * between eDP port A enable and vdd enable. Also PCH port
	 * enable seems to result in the occasional CPU pipe underrun.
	 *
	 * Spurious PCH underruns also occur during PCH enabling.
	 */
	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);

	ilk_configure_cpu_transcoder(new_crtc_state);

	intel_set_pipe_src_size(new_crtc_state);

	crtc->active = true;

	intel_encoders_pre_enable(state, crtc);

	if (new_crtc_state->has_pch_encoder) {
		ilk_pch_pre_enable(state, crtc);
	} else {
		assert_fdi_tx_disabled(dev_priv, pipe);
		assert_fdi_rx_disabled(dev_priv, pipe);
	}

	ilk_pfit_enable(new_crtc_state);

	/*
	 * On ILK+ LUT must be loaded before the pipe is running but with
	 * clocks enabled
	 */
	intel_color_load_luts(new_crtc_state);
	intel_color_commit_noarm(new_crtc_state);
	intel_color_commit_arm(new_crtc_state);
	/* update DSPCNTR to configure gamma for pipe bottom color */
	intel_disable_primary_plane(new_crtc_state);

	intel_initial_watermarks(state, crtc);
	intel_enable_transcoder(new_crtc_state);

	if (new_crtc_state->has_pch_encoder)
		ilk_pch_enable(state, crtc);

	intel_crtc_vblank_on(new_crtc_state);

	intel_encoders_enable(state, crtc);

	if (HAS_PCH_CPT(dev_priv))
		intel_wait_for_pipe_scanline_moving(crtc);

	/*
	 * Must wait for vblank to avoid spurious PCH FIFO underruns.
	 * And a second vblank wait is needed at least on ILK with
	 * some interlaced HDMI modes. Let's do the double wait always
	 * in case there are more corner cases we don't know about.
	 */
	if (new_crtc_state->has_pch_encoder) {
		intel_crtc_wait_for_next_vblank(crtc);
		intel_crtc_wait_for_next_vblank(crtc);
	}
	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
}

static void glk_pipe_scaler_clock_gating_wa(struct drm_i915_private *dev_priv,
					    enum pipe pipe, bool apply)
{
	u32 val = intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe));
	u32 mask = DPF_GATING_DIS | DPF_RAM_GATING_DIS | DPFR_GATING_DIS;

	if (apply)
		val |= mask;
	else
		val &= ~mask;

	intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe), val);
}

static void hsw_set_linetime_wm(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	intel_de_write(dev_priv, WM_LINETIME(crtc->pipe),
		       HSW_LINETIME(crtc_state->linetime) |
		       HSW_IPS_LINETIME(crtc_state->ips_linetime));
}

static void hsw_set_frame_start_delay(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *i915 = to_i915(crtc->base.dev);

	intel_de_rmw(i915, hsw_chicken_trans_reg(i915, crtc_state->cpu_transcoder),
		     HSW_FRAME_START_DELAY_MASK,
		     HSW_FRAME_START_DELAY(crtc_state->framestart_delay - 1));
}

static void icl_ddi_bigjoiner_pre_enable(struct intel_atomic_state *state,
					 const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *master_crtc = intel_master_crtc(crtc_state);

	/*
	 * Enable sequence steps 1-7 on bigjoiner master
	 */
	if (intel_crtc_is_bigjoiner_slave(crtc_state))
		intel_encoders_pre_pll_enable(state, master_crtc);

	if (crtc_state->shared_dpll)
		intel_enable_shared_dpll(crtc_state);

	if (intel_crtc_is_bigjoiner_slave(crtc_state))
		intel_encoders_pre_enable(state, master_crtc);
}

static void hsw_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;

	if (crtc_state->has_pch_encoder) {
		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
					       &crtc_state->fdi_m_n);
	} else if (intel_crtc_has_dp_encoder(crtc_state)) {
		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
					       &crtc_state->dp_m_n);
		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
					       &crtc_state->dp_m2_n2);
	}

	intel_set_transcoder_timings(crtc_state);
	if (HAS_VRR(dev_priv))
		intel_vrr_set_transcoder_timings(crtc_state);

	if (cpu_transcoder != TRANSCODER_EDP)
		intel_de_write(dev_priv, TRANS_MULT(cpu_transcoder),
			       crtc_state->pixel_multiplier - 1);

	hsw_set_frame_start_delay(crtc_state);

	hsw_set_transconf(crtc_state);
}

static void hsw_crtc_enable(struct intel_atomic_state *state,
			    struct intel_crtc *crtc)
{
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe, hsw_workaround_pipe;
	enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
	bool psl_clkgate_wa;

	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
		return;

	intel_dmc_enable_pipe(dev_priv, crtc->pipe);

	if (!new_crtc_state->bigjoiner_pipes) {
		intel_encoders_pre_pll_enable(state, crtc);

		if (new_crtc_state->shared_dpll)
			intel_enable_shared_dpll(new_crtc_state);

		intel_encoders_pre_enable(state, crtc);
	} else {
		icl_ddi_bigjoiner_pre_enable(state, new_crtc_state);
	}

	intel_dsc_enable(new_crtc_state);

	if (DISPLAY_VER(dev_priv) >= 13)
		intel_uncompressed_joiner_enable(new_crtc_state);

	intel_set_pipe_src_size(new_crtc_state);
	if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
		bdw_set_pipe_misc(new_crtc_state);

	if (!intel_crtc_is_bigjoiner_slave(new_crtc_state) &&
	    !transcoder_is_dsi(cpu_transcoder))
		hsw_configure_cpu_transcoder(new_crtc_state);

	crtc->active = true;

	/* Display WA #1180: WaDisableScalarClockGating: glk */
	psl_clkgate_wa = DISPLAY_VER(dev_priv) == 10 &&
		new_crtc_state->pch_pfit.enabled;
	if (psl_clkgate_wa)
		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, true);

	if (DISPLAY_VER(dev_priv) >= 9)
		skl_pfit_enable(new_crtc_state);
	else
		ilk_pfit_enable(new_crtc_state);

	/*
	 * On ILK+ LUT must be loaded before the pipe is running but with
	 * clocks enabled
	 */
	intel_color_load_luts(new_crtc_state);
	intel_color_commit_noarm(new_crtc_state);
	intel_color_commit_arm(new_crtc_state);
	/* update DSPCNTR to configure gamma/csc for pipe bottom color */
	if (DISPLAY_VER(dev_priv) < 9)
		intel_disable_primary_plane(new_crtc_state);

	hsw_set_linetime_wm(new_crtc_state);

	if (DISPLAY_VER(dev_priv) >= 11)
		icl_set_pipe_chicken(new_crtc_state);

	intel_initial_watermarks(state, crtc);

	if (intel_crtc_is_bigjoiner_slave(new_crtc_state))
		intel_crtc_vblank_on(new_crtc_state);

	intel_encoders_enable(state, crtc);

	if (psl_clkgate_wa) {
		intel_crtc_wait_for_next_vblank(crtc);
		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, false);
	}

	/* If we change the relative order between pipe/planes enabling, we need
	 * to change the workaround. */
	hsw_workaround_pipe = new_crtc_state->hsw_workaround_pipe;
	if (IS_HASWELL(dev_priv) && hsw_workaround_pipe != INVALID_PIPE) {
		struct intel_crtc *wa_crtc;

		wa_crtc = intel_crtc_for_pipe(dev_priv, hsw_workaround_pipe);

		intel_crtc_wait_for_next_vblank(wa_crtc);
		intel_crtc_wait_for_next_vblank(wa_crtc);
	}
}

void ilk_pfit_disable(const struct intel_crtc_state *old_crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	/* To avoid upsetting the power well on haswell only disable the pfit if
	 * it's in use. The hw state code will make sure we get this right. */
	if (!old_crtc_state->pch_pfit.enabled)
		return;

	intel_de_write_fw(dev_priv, PF_CTL(pipe), 0);
	intel_de_write_fw(dev_priv, PF_WIN_POS(pipe), 0);
	intel_de_write_fw(dev_priv, PF_WIN_SZ(pipe), 0);
}

static void ilk_crtc_disable(struct intel_atomic_state *state,
			     struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	/*
	 * Sometimes spurious CPU pipe underruns happen when the
	 * pipe is already disabled, but FDI RX/TX is still enabled.
	 * Happens at least with VGA+HDMI cloning. Suppress them.
	 */
	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);

	intel_encoders_disable(state, crtc);

	intel_crtc_vblank_off(old_crtc_state);

	intel_disable_transcoder(old_crtc_state);

	ilk_pfit_disable(old_crtc_state);

	if (old_crtc_state->has_pch_encoder)
		ilk_pch_disable(state, crtc);

	intel_encoders_post_disable(state, crtc);

	if (old_crtc_state->has_pch_encoder)
		ilk_pch_post_disable(state, crtc);

	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);

	intel_disable_shared_dpll(old_crtc_state);
}

static void hsw_crtc_disable(struct intel_atomic_state *state,
			     struct intel_crtc *crtc)
{
	const struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	struct drm_i915_private *i915 = to_i915(crtc->base.dev);

	/*
	 * FIXME collapse everything to one hook.
	 * Need care with mst->ddi interactions.
	 */
	if (!intel_crtc_is_bigjoiner_slave(old_crtc_state)) {
		intel_encoders_disable(state, crtc);
		intel_encoders_post_disable(state, crtc);
	}

	intel_disable_shared_dpll(old_crtc_state);

	if (!intel_crtc_is_bigjoiner_slave(old_crtc_state)) {
		struct intel_crtc *slave_crtc;

		intel_encoders_post_pll_disable(state, crtc);

		intel_dmc_disable_pipe(i915, crtc->pipe);

		for_each_intel_crtc_in_pipe_mask(&i915->drm, slave_crtc,
						 intel_crtc_bigjoiner_slave_pipes(old_crtc_state))
			intel_dmc_disable_pipe(i915, slave_crtc->pipe);
	}
}

static void i9xx_pfit_enable(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	if (!crtc_state->gmch_pfit.control)
		return;

	/*
	 * The panel fitter should only be adjusted whilst the pipe is disabled,
	 * according to register description and PRM.
	 */
	drm_WARN_ON(&dev_priv->drm,
		    intel_de_read(dev_priv, PFIT_CONTROL) & PFIT_ENABLE);
	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);

	intel_de_write(dev_priv, PFIT_PGM_RATIOS,
		       crtc_state->gmch_pfit.pgm_ratios);
	intel_de_write(dev_priv, PFIT_CONTROL, crtc_state->gmch_pfit.control);

	/* Border color in case we don't scale up to the full screen. Black by
	 * default, change to something else for debugging. */
	intel_de_write(dev_priv, BCLRPAT(crtc->pipe), 0);
}

bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
{
	if (phy == PHY_NONE)
		return false;
	else if (IS_ALDERLAKE_S(dev_priv))
		return phy <= PHY_E;
	else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
		return phy <= PHY_D;
	else if (IS_JASPERLAKE(dev_priv) || IS_ELKHARTLAKE(dev_priv))
		return phy <= PHY_C;
	else if (IS_ALDERLAKE_P(dev_priv) || IS_DISPLAY_VER(dev_priv, 11, 12))
		return phy <= PHY_B;
	else
		/*
		 * DG2 outputs labelled as "combo PHY" in the bspec use
		 * SNPS PHYs with completely different programming,
		 * hence we always return false here.
		 */
		return false;
}

bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
{
	/*
	 * DG2's "TC1", although TC-capable output, doesn't share the same flow
	 * as other platforms on the display engine side and rather rely on the
	 * SNPS PHY, that is programmed separately
	 */
	if (IS_DG2(dev_priv))
		return false;

	if (DISPLAY_VER(dev_priv) >= 13)
		return phy >= PHY_F && phy <= PHY_I;
	else if (IS_TIGERLAKE(dev_priv))
		return phy >= PHY_D && phy <= PHY_I;
	else if (IS_ICELAKE(dev_priv))
		return phy >= PHY_C && phy <= PHY_F;

	return false;
}

bool intel_phy_is_snps(struct drm_i915_private *dev_priv, enum phy phy)
{
	/*
	 * For DG2, and for DG2 only, all four "combo" ports and the TC1 port
	 * (PHY E) use Synopsis PHYs. See intel_phy_is_tc().
	 */
	return IS_DG2(dev_priv) && phy > PHY_NONE && phy <= PHY_E;
}

enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
{
	if (DISPLAY_VER(i915) >= 13 && port >= PORT_D_XELPD)
		return PHY_D + port - PORT_D_XELPD;
	else if (DISPLAY_VER(i915) >= 13 && port >= PORT_TC1)
		return PHY_F + port - PORT_TC1;
	else if (IS_ALDERLAKE_S(i915) && port >= PORT_TC1)
		return PHY_B + port - PORT_TC1;
	else if ((IS_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
		return PHY_C + port - PORT_TC1;
	else if ((IS_JASPERLAKE(i915) || IS_ELKHARTLAKE(i915)) &&
		 port == PORT_D)
		return PHY_A;

	return PHY_A + port - PORT_A;
}

enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
{
	if (!intel_phy_is_tc(dev_priv, intel_port_to_phy(dev_priv, port)))
		return TC_PORT_NONE;

	if (DISPLAY_VER(dev_priv) >= 12)
		return TC_PORT_1 + port - PORT_TC1;
	else
		return TC_PORT_1 + port - PORT_C;
}

enum intel_display_power_domain
intel_aux_power_domain(struct intel_digital_port *dig_port)
{
	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);

	if (intel_tc_port_in_tbt_alt_mode(dig_port))
		return intel_display_power_tbt_aux_domain(i915, dig_port->aux_ch);

	return intel_display_power_legacy_aux_domain(i915, dig_port->aux_ch);
}

static void get_crtc_power_domains(struct intel_crtc_state *crtc_state,
				   struct intel_power_domain_mask *mask)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
	struct drm_encoder *encoder;
	enum pipe pipe = crtc->pipe;

	bitmap_zero(mask->bits, POWER_DOMAIN_NUM);

	if (!crtc_state->hw.active)
		return;

	set_bit(POWER_DOMAIN_PIPE(pipe), mask->bits);
	set_bit(POWER_DOMAIN_TRANSCODER(cpu_transcoder), mask->bits);
	if (crtc_state->pch_pfit.enabled ||
	    crtc_state->pch_pfit.force_thru)
		set_bit(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe), mask->bits);

	drm_for_each_encoder_mask(encoder, &dev_priv->drm,
				  crtc_state->uapi.encoder_mask) {
		struct intel_encoder *intel_encoder = to_intel_encoder(encoder);

		set_bit(intel_encoder->power_domain, mask->bits);
	}

	if (HAS_DDI(dev_priv) && crtc_state->has_audio)
		set_bit(POWER_DOMAIN_AUDIO_MMIO, mask->bits);

	if (crtc_state->shared_dpll)
		set_bit(POWER_DOMAIN_DISPLAY_CORE, mask->bits);

	if (crtc_state->dsc.compression_enable)
		set_bit(intel_dsc_power_domain(crtc, cpu_transcoder), mask->bits);
}

void intel_modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
					  struct intel_power_domain_mask *old_domains)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum intel_display_power_domain domain;
	struct intel_power_domain_mask domains, new_domains;

	get_crtc_power_domains(crtc_state, &domains);

	bitmap_andnot(new_domains.bits,
		      domains.bits,
		      crtc->enabled_power_domains.mask.bits,
		      POWER_DOMAIN_NUM);
	bitmap_andnot(old_domains->bits,
		      crtc->enabled_power_domains.mask.bits,
		      domains.bits,
		      POWER_DOMAIN_NUM);

	for_each_power_domain(domain, &new_domains)
		intel_display_power_get_in_set(dev_priv,
					       &crtc->enabled_power_domains,
					       domain);
}

void intel_modeset_put_crtc_power_domains(struct intel_crtc *crtc,
					  struct intel_power_domain_mask *domains)
{
	intel_display_power_put_mask_in_set(to_i915(crtc->base.dev),
					    &crtc->enabled_power_domains,
					    domains);
}

static void i9xx_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;

	if (intel_crtc_has_dp_encoder(crtc_state)) {
		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
					       &crtc_state->dp_m_n);
		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
					       &crtc_state->dp_m2_n2);
	}

	intel_set_transcoder_timings(crtc_state);

	i9xx_set_pipeconf(crtc_state);
}

static void valleyview_crtc_enable(struct intel_atomic_state *state,
				   struct intel_crtc *crtc)
{
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
		return;

	i9xx_configure_cpu_transcoder(new_crtc_state);

	intel_set_pipe_src_size(new_crtc_state);

	intel_de_write(dev_priv, VLV_PIPE_MSA_MISC(pipe), 0);

	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
		intel_de_write(dev_priv, CHV_BLEND(pipe), CHV_BLEND_LEGACY);
		intel_de_write(dev_priv, CHV_CANVAS(pipe), 0);
	}

	crtc->active = true;

	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);

	intel_encoders_pre_pll_enable(state, crtc);

	if (IS_CHERRYVIEW(dev_priv))
		chv_enable_pll(new_crtc_state);
	else
		vlv_enable_pll(new_crtc_state);

	intel_encoders_pre_enable(state, crtc);

	i9xx_pfit_enable(new_crtc_state);

	intel_color_load_luts(new_crtc_state);
	intel_color_commit_noarm(new_crtc_state);
	intel_color_commit_arm(new_crtc_state);
	/* update DSPCNTR to configure gamma for pipe bottom color */
	intel_disable_primary_plane(new_crtc_state);

	intel_initial_watermarks(state, crtc);
	intel_enable_transcoder(new_crtc_state);

	intel_crtc_vblank_on(new_crtc_state);

	intel_encoders_enable(state, crtc);
}

static void i9xx_crtc_enable(struct intel_atomic_state *state,
			     struct intel_crtc *crtc)
{
	const struct intel_crtc_state *new_crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
		return;

	i9xx_configure_cpu_transcoder(new_crtc_state);

	intel_set_pipe_src_size(new_crtc_state);

	crtc->active = true;

	if (DISPLAY_VER(dev_priv) != 2)
		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);

	intel_encoders_pre_enable(state, crtc);

	i9xx_enable_pll(new_crtc_state);

	i9xx_pfit_enable(new_crtc_state);

	intel_color_load_luts(new_crtc_state);
	intel_color_commit_noarm(new_crtc_state);
	intel_color_commit_arm(new_crtc_state);
	/* update DSPCNTR to configure gamma for pipe bottom color */
	intel_disable_primary_plane(new_crtc_state);

	if (!intel_initial_watermarks(state, crtc))
		intel_update_watermarks(dev_priv);
	intel_enable_transcoder(new_crtc_state);

	intel_crtc_vblank_on(new_crtc_state);

	intel_encoders_enable(state, crtc);

	/* prevents spurious underruns */
	if (DISPLAY_VER(dev_priv) == 2)
		intel_crtc_wait_for_next_vblank(crtc);
}

static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	if (!old_crtc_state->gmch_pfit.control)
		return;

	assert_transcoder_disabled(dev_priv, old_crtc_state->cpu_transcoder);

	drm_dbg_kms(&dev_priv->drm, "disabling pfit, current: 0x%08x\n",
		    intel_de_read(dev_priv, PFIT_CONTROL));
	intel_de_write(dev_priv, PFIT_CONTROL, 0);
}

static void i9xx_crtc_disable(struct intel_atomic_state *state,
			      struct intel_crtc *crtc)
{
	struct intel_crtc_state *old_crtc_state =
		intel_atomic_get_old_crtc_state(state, crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	/*
	 * On gen2 planes are double buffered but the pipe isn't, so we must
	 * wait for planes to fully turn off before disabling the pipe.
	 */
	if (DISPLAY_VER(dev_priv) == 2)
		intel_crtc_wait_for_next_vblank(crtc);

	intel_encoders_disable(state, crtc);

	intel_crtc_vblank_off(old_crtc_state);

	intel_disable_transcoder(old_crtc_state);

	i9xx_pfit_disable(old_crtc_state);

	intel_encoders_post_disable(state, crtc);

	if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI)) {
		if (IS_CHERRYVIEW(dev_priv))
			chv_disable_pll(dev_priv, pipe);
		else if (IS_VALLEYVIEW(dev_priv))
			vlv_disable_pll(dev_priv, pipe);
		else
			i9xx_disable_pll(old_crtc_state);
	}

	intel_encoders_post_pll_disable(state, crtc);

	if (DISPLAY_VER(dev_priv) != 2)
		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);

	if (!dev_priv->display.funcs.wm->initial_watermarks)
		intel_update_watermarks(dev_priv);

	/* clock the pipe down to 640x480@60 to potentially save power */
	if (IS_I830(dev_priv))
		i830_enable_pipe(dev_priv, pipe);
}

void intel_encoder_destroy(struct drm_encoder *encoder)
{
	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);

	drm_encoder_cleanup(encoder);
	kfree(intel_encoder);
}

static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
{
	const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	/* GDG double wide on either pipe, otherwise pipe A only */
	return DISPLAY_VER(dev_priv) < 4 &&
		(crtc->pipe == PIPE_A || IS_I915G(dev_priv));
}

static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *crtc_state)
{
	u32 pixel_rate = crtc_state->hw.pipe_mode.crtc_clock;
	struct drm_rect src;

	/*
	 * We only use IF-ID interlacing. If we ever use
	 * PF-ID we'll need to adjust the pixel_rate here.
	 */

	if (!crtc_state->pch_pfit.enabled)
		return pixel_rate;

	drm_rect_init(&src, 0, 0,
		      drm_rect_width(&crtc_state->pipe_src) << 16,
		      drm_rect_height(&crtc_state->pipe_src) << 16);

	return intel_adjusted_rate(&src, &crtc_state->pch_pfit.dst,
				   pixel_rate);
}

static void intel_mode_from_crtc_timings(struct drm_display_mode *mode,
					 const struct drm_display_mode *timings)
{
	mode->hdisplay = timings->crtc_hdisplay;
	mode->htotal = timings->crtc_htotal;
	mode->hsync_start = timings->crtc_hsync_start;
	mode->hsync_end = timings->crtc_hsync_end;

	mode->vdisplay = timings->crtc_vdisplay;
	mode->vtotal = timings->crtc_vtotal;
	mode->vsync_start = timings->crtc_vsync_start;
	mode->vsync_end = timings->crtc_vsync_end;

	mode->flags = timings->flags;
	mode->type = DRM_MODE_TYPE_DRIVER;

	mode->clock = timings->crtc_clock;

	drm_mode_set_name(mode);
}

static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);

	if (HAS_GMCH(dev_priv))
		/* FIXME calculate proper pipe pixel rate for GMCH pfit */
		crtc_state->pixel_rate =
			crtc_state->hw.pipe_mode.crtc_clock;
	else
		crtc_state->pixel_rate =
			ilk_pipe_pixel_rate(crtc_state);
}

static void intel_bigjoiner_adjust_timings(const struct intel_crtc_state *crtc_state,
					   struct drm_display_mode *mode)
{
	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);

	if (num_pipes < 2)
		return;

	mode->crtc_clock /= num_pipes;
	mode->crtc_hdisplay /= num_pipes;
	mode->crtc_hblank_start /= num_pipes;
	mode->crtc_hblank_end /= num_pipes;
	mode->crtc_hsync_start /= num_pipes;
	mode->crtc_hsync_end /= num_pipes;
	mode->crtc_htotal /= num_pipes;
}

static void intel_splitter_adjust_timings(const struct intel_crtc_state *crtc_state,
					  struct drm_display_mode *mode)
{
	int overlap = crtc_state->splitter.pixel_overlap;
	int n = crtc_state->splitter.link_count;

	if (!crtc_state->splitter.enable)
		return;

	/*
	 * eDP MSO uses segment timings from EDID for transcoder
	 * timings, but full mode for everything else.
	 *
	 * h_full = (h_segment - pixel_overlap) * link_count
	 */
	mode->crtc_hdisplay = (mode->crtc_hdisplay - overlap) * n;
	mode->crtc_hblank_start = (mode->crtc_hblank_start - overlap) * n;
	mode->crtc_hblank_end = (mode->crtc_hblank_end - overlap) * n;
	mode->crtc_hsync_start = (mode->crtc_hsync_start - overlap) * n;
	mode->crtc_hsync_end = (mode->crtc_hsync_end - overlap) * n;
	mode->crtc_htotal = (mode->crtc_htotal - overlap) * n;
	mode->crtc_clock *= n;
}

static void intel_crtc_readout_derived_state(struct intel_crtc_state *crtc_state)
{
	struct drm_display_mode *mode = &crtc_state->hw.mode;
	struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;

	/*
	 * Start with the adjusted_mode crtc timings, which
	 * have been filled with the transcoder timings.
	 */
	drm_mode_copy(pipe_mode, adjusted_mode);

	/* Expand MSO per-segment transcoder timings to full */
	intel_splitter_adjust_timings(crtc_state, pipe_mode);

	/*
	 * We want the full numbers in adjusted_mode normal timings,
	 * adjusted_mode crtc timings are left with the raw transcoder
	 * timings.
	 */
	intel_mode_from_crtc_timings(adjusted_mode, pipe_mode);

	/* Populate the "user" mode with full numbers */
	drm_mode_copy(mode, pipe_mode);
	intel_mode_from_crtc_timings(mode, mode);
	mode->hdisplay = drm_rect_width(&crtc_state->pipe_src) *
		(intel_bigjoiner_num_pipes(crtc_state) ?: 1);
	mode->vdisplay = drm_rect_height(&crtc_state->pipe_src);

	/* Derive per-pipe timings in case bigjoiner is used */
	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
	intel_mode_from_crtc_timings(pipe_mode, pipe_mode);

	intel_crtc_compute_pixel_rate(crtc_state);
}

void intel_encoder_get_config(struct intel_encoder *encoder,
			      struct intel_crtc_state *crtc_state)
{
	encoder->get_config(encoder, crtc_state);

	intel_crtc_readout_derived_state(crtc_state);
}

static void intel_bigjoiner_compute_pipe_src(struct intel_crtc_state *crtc_state)
{
	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);
	int width, height;

	if (num_pipes < 2)
		return;

	width = drm_rect_width(&crtc_state->pipe_src);
	height = drm_rect_height(&crtc_state->pipe_src);

	drm_rect_init(&crtc_state->pipe_src, 0, 0,
		      width / num_pipes, height);
}

static int intel_crtc_compute_pipe_src(struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *i915 = to_i915(crtc->base.dev);

	intel_bigjoiner_compute_pipe_src(crtc_state);

	/*
	 * Pipe horizontal size must be even in:
	 * - DVO ganged mode
	 * - LVDS dual channel mode
	 * - Double wide pipe
	 */
	if (drm_rect_width(&crtc_state->pipe_src) & 1) {
		if (crtc_state->double_wide) {
			drm_dbg_kms(&i915->drm,
				    "[CRTC:%d:%s] Odd pipe source width not supported with double wide pipe\n",
				    crtc->base.base.id, crtc->base.name);
			return -EINVAL;
		}

		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
		    intel_is_dual_link_lvds(i915)) {
			drm_dbg_kms(&i915->drm,
				    "[CRTC:%d:%s] Odd pipe source width not supported with dual link LVDS\n",
				    crtc->base.base.id, crtc->base.name);
			return -EINVAL;
		}
	}

	return 0;
}

static int intel_crtc_compute_pipe_mode(struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
	struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
	int clock_limit = i915->max_dotclk_freq;

	/*
	 * Start with the adjusted_mode crtc timings, which
	 * have been filled with the transcoder timings.
	 */
	drm_mode_copy(pipe_mode, adjusted_mode);

	/* Expand MSO per-segment transcoder timings to full */
	intel_splitter_adjust_timings(crtc_state, pipe_mode);

	/* Derive per-pipe timings in case bigjoiner is used */
	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
	intel_mode_from_crtc_timings(pipe_mode, pipe_mode);

	if (DISPLAY_VER(i915) < 4) {
		clock_limit = i915->display.cdclk.max_cdclk_freq * 9 / 10;

		/*
		 * Enable double wide mode when the dot clock
		 * is > 90% of the (display) core speed.
		 */
		if (intel_crtc_supports_double_wide(crtc) &&
		    pipe_mode->crtc_clock > clock_limit) {
			clock_limit = i915->max_dotclk_freq;
			crtc_state->double_wide = true;
		}
	}

	if (pipe_mode->crtc_clock > clock_limit) {
		drm_dbg_kms(&i915->drm,
			    "[CRTC:%d:%s] requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
			    crtc->base.base.id, crtc->base.name,
			    pipe_mode->crtc_clock, clock_limit,
			    str_yes_no(crtc_state->double_wide));
		return -EINVAL;
	}

	return 0;
}

static int intel_crtc_compute_config(struct intel_atomic_state *state,
				     struct intel_crtc *crtc)
{
	struct intel_crtc_state *crtc_state =
		intel_atomic_get_new_crtc_state(state, crtc);
	int ret;

	ret = intel_dpll_crtc_compute_clock(state, crtc);
	if (ret)
		return ret;

	ret = intel_crtc_compute_pipe_src(crtc_state);
	if (ret)
		return ret;

	ret = intel_crtc_compute_pipe_mode(crtc_state);
	if (ret)
		return ret;

	intel_crtc_compute_pixel_rate(crtc_state);

	if (crtc_state->has_pch_encoder)
		return ilk_fdi_compute_config(crtc, crtc_state);

	return 0;
}

static void
intel_reduce_m_n_ratio(u32 *num, u32 *den)
{
	while (*num > DATA_LINK_M_N_MASK ||
	       *den > DATA_LINK_M_N_MASK) {
		*num >>= 1;
		*den >>= 1;
	}
}

static void compute_m_n(u32 *ret_m, u32 *ret_n,
			u32 m, u32 n, u32 constant_n)
{
	if (constant_n)
		*ret_n = constant_n;
	else
		*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);

	*ret_m = div_u64(mul_u32_u32(m, *ret_n), n);
	intel_reduce_m_n_ratio(ret_m, ret_n);
}

void
intel_link_compute_m_n(u16 bits_per_pixel_x16, int nlanes,
		       int pixel_clock, int link_clock,
		       int bw_overhead,
		       struct intel_link_m_n *m_n)
{
	u32 link_symbol_clock = intel_dp_link_symbol_clock(link_clock);
	u32 data_m = intel_dp_effective_data_rate(pixel_clock, bits_per_pixel_x16,
						  bw_overhead);
	u32 data_n = drm_dp_max_dprx_data_rate(link_clock, nlanes);

	/*
	 * Windows/BIOS uses fixed M/N values always. Follow suit.
	 *
	 * Also several DP dongles in particular seem to be fussy
	 * about too large link M/N values. Presumably the 20bit
	 * value used by Windows/BIOS is acceptable to everyone.
	 */
	m_n->tu = 64;
	compute_m_n(&m_n->data_m, &m_n->data_n,
		    data_m, data_n,
		    0x8000000);

	compute_m_n(&m_n->link_m, &m_n->link_n,
		    pixel_clock, link_symbol_clock,
		    0x80000);
}

void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
{
	/*
	 * There may be no VBT; and if the BIOS enabled SSC we can
	 * just keep using it to avoid unnecessary flicker.  Whereas if the
	 * BIOS isn't using it, don't assume it will work even if the VBT
	 * indicates as much.
	 */
	if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
		bool bios_lvds_use_ssc = intel_de_read(dev_priv,
						       PCH_DREF_CONTROL) &
			DREF_SSC1_ENABLE;

		if (dev_priv->display.vbt.lvds_use_ssc != bios_lvds_use_ssc) {
			drm_dbg_kms(&dev_priv->drm,
				    "SSC %s by BIOS, overriding VBT which says %s\n",
				    str_enabled_disabled(bios_lvds_use_ssc),
				    str_enabled_disabled(dev_priv->display.vbt.lvds_use_ssc));
			dev_priv->display.vbt.lvds_use_ssc = bios_lvds_use_ssc;
		}
	}
}

void intel_zero_m_n(struct intel_link_m_n *m_n)
{
	/* corresponds to 0 register value */
	memset(m_n, 0, sizeof(*m_n));
	m_n->tu = 1;
}

void intel_set_m_n(struct drm_i915_private *i915,
		   const struct intel_link_m_n *m_n,
		   i915_reg_t data_m_reg, i915_reg_t data_n_reg,
		   i915_reg_t link_m_reg, i915_reg_t link_n_reg)
{
	intel_de_write(i915, data_m_reg, TU_SIZE(m_n->tu) | m_n->data_m);
	intel_de_write(i915, data_n_reg, m_n->data_n);
	intel_de_write(i915, link_m_reg, m_n->link_m);
	/*
	 * On BDW+ writing LINK_N arms the double buffered update
	 * of all the M/N registers, so it must be written last.
	 */
	intel_de_write(i915, link_n_reg, m_n->link_n);
}

bool intel_cpu_transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
				    enum transcoder transcoder)
{
	if (IS_HASWELL(dev_priv))
		return transcoder == TRANSCODER_EDP;

	return IS_DISPLAY_VER(dev_priv, 5, 7) || IS_CHERRYVIEW(dev_priv);
}

void intel_cpu_transcoder_set_m1_n1(struct intel_crtc *crtc,
				    enum transcoder transcoder,
				    const struct intel_link_m_n *m_n)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;

	if (DISPLAY_VER(dev_priv) >= 5)
		intel_set_m_n(dev_priv, m_n,
			      PIPE_DATA_M1(transcoder), PIPE_DATA_N1(transcoder),
			      PIPE_LINK_M1(transcoder), PIPE_LINK_N1(transcoder));
	else
		intel_set_m_n(dev_priv, m_n,
			      PIPE_DATA_M_G4X(pipe), PIPE_DATA_N_G4X(pipe),
			      PIPE_LINK_M_G4X(pipe), PIPE_LINK_N_G4X(pipe));
}

void intel_cpu_transcoder_set_m2_n2(struct intel_crtc *crtc,
				    enum transcoder transcoder,
				    const struct intel_link_m_n *m_n)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);

	if (!intel_cpu_transcoder_has_m2_n2(dev_priv, transcoder))
		return;

	intel_set_m_n(dev_priv, m_n,
		      PIPE_DATA_M2(transcoder), PIPE_DATA_N2(transcoder),
		      PIPE_LINK_M2(transcoder), PIPE_LINK_N2(transcoder));
}

static void intel_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe = crtc->pipe;
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
	u32 crtc_vdisplay, crtc_vtotal, crtc_vblank_start, crtc_vblank_end;
	int vsyncshift = 0;

	/* We need to be careful not to changed the adjusted mode, for otherwise
	 * the hw state checker will get angry at the mismatch. */
	crtc_vdisplay = adjusted_mode->crtc_vdisplay;
	crtc_vtotal = adjusted_mode->crtc_vtotal;
	crtc_vblank_start = adjusted_mode->crtc_vblank_start;
	crtc_vblank_end = adjusted_mode->crtc_vblank_end;

	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
		/* the chip adds 2 halflines automatically */
		crtc_vtotal -= 1;
		crtc_vblank_end -= 1;

		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
			vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
		else
			vsyncshift = adjusted_mode->crtc_hsync_start -
				adjusted_mode->crtc_htotal / 2;
		if (vsyncshift < 0)
			vsyncshift += adjusted_mode->crtc_htotal;
	}

	/*
	 * VBLANK_START no longer works on ADL+, instead we must use
	 * TRANS_SET_CONTEXT_LATENCY to configure the pipe vblank start.
	 */
	if (DISPLAY_VER(dev_priv) >= 13) {
		intel_de_write(dev_priv, TRANS_SET_CONTEXT_LATENCY(cpu_transcoder),
			       crtc_vblank_start - crtc_vdisplay);

		/*
		 * VBLANK_START not used by hw, just clear it
		 * to make it stand out in register dumps.
		 */
		crtc_vblank_start = 1;
	}

	if (DISPLAY_VER(dev_priv) >= 4)
		intel_de_write(dev_priv, TRANS_VSYNCSHIFT(cpu_transcoder),
			       vsyncshift);

	intel_de_write(dev_priv, TRANS_HTOTAL(cpu_transcoder),
		       HACTIVE(adjusted_mode->crtc_hdisplay - 1) |
		       HTOTAL(adjusted_mode->crtc_htotal - 1));
	intel_de_write(dev_priv, TRANS_HBLANK(cpu_transcoder),
		       HBLANK_START(adjusted_mode->crtc_hblank_start - 1) |
		       HBLANK_END(adjusted_mode->crtc_hblank_end - 1));
	intel_de_write(dev_priv, TRANS_HSYNC(cpu_transcoder),
		       HSYNC_START(adjusted_mode->crtc_hsync_start - 1) |
		       HSYNC_END(adjusted_mode->crtc_hsync_end - 1));

	intel_de_write(dev_priv, TRANS_VTOTAL(cpu_transcoder),
		       VACTIVE(crtc_vdisplay - 1) |
		       VTOTAL(crtc_vtotal - 1));
	intel_de_write(dev_priv, TRANS_VBLANK(cpu_transcoder),
		       VBLANK_START(crtc_vblank_start - 1) |
		       VBLANK_END(crtc_vblank_end - 1));
	intel_de_write(dev_priv, TRANS_VSYNC(cpu_transcoder),
		       VSYNC_START(adjusted_mode->crtc_vsync_start - 1) |
		       VSYNC_END(adjusted_mode->crtc_vsync_end - 1));

	/* Workaround: when the EDP input selection is B, the VTOTAL_B must be
	 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
	 * documented on the DDI_FUNC_CTL register description, EDP Input Select
	 * bits. */
	if (IS_HASWELL(dev_priv) && cpu_transcoder == TRANSCODER_EDP &&
	    (pipe == PIPE_B || pipe == PIPE_C))
		intel_de_write(dev_priv, TRANS_VTOTAL(pipe),
			       VACTIVE(crtc_vdisplay - 1) |
			       VTOTAL(crtc_vtotal - 1));
}

static void intel_set_transcoder_timings_lrr(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
	u32 crtc_vdisplay, crtc_vtotal, crtc_vblank_start, crtc_vblank_end;

	crtc_vdisplay = adjusted_mode->crtc_vdisplay;
	crtc_vtotal = adjusted_mode->crtc_vtotal;
	crtc_vblank_start = adjusted_mode->crtc_vblank_start;
	crtc_vblank_end = adjusted_mode->crtc_vblank_end;

	drm_WARN_ON(&dev_priv->drm, adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE);

	/*
	 * The hardware actually ignores TRANS_VBLANK.VBLANK_END in DP mode.
	 * But let's write it anyway to keep the state checker happy.
	 */
	intel_de_write(dev_priv, TRANS_VBLANK(cpu_transcoder),
		       VBLANK_START(crtc_vblank_start - 1) |
		       VBLANK_END(crtc_vblank_end - 1));
	/*
	 * The double buffer latch point for TRANS_VTOTAL
	 * is the transcoder's undelayed vblank.
	 */
	intel_de_write(dev_priv, TRANS_VTOTAL(cpu_transcoder),
		       VACTIVE(crtc_vdisplay - 1) |
		       VTOTAL(crtc_vtotal - 1));
}

static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	int width = drm_rect_width(&crtc_state->pipe_src);
	int height = drm_rect_height(&crtc_state->pipe_src);
	enum pipe pipe = crtc->pipe;

	/* pipesrc controls the size that is scaled from, which should
	 * always be the user's requested size.
	 */
	intel_de_write(dev_priv, PIPESRC(pipe),
		       PIPESRC_WIDTH(width - 1) | PIPESRC_HEIGHT(height - 1));
}

static bool intel_pipe_is_interlaced(const struct intel_crtc_state *crtc_state)
{
	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;

	if (DISPLAY_VER(dev_priv) == 2)
		return false;

	if (DISPLAY_VER(dev_priv) >= 9 ||
	    IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
		return intel_de_read(dev_priv, TRANSCONF(cpu_transcoder)) & TRANSCONF_INTERLACE_MASK_HSW;
	else
		return intel_de_read(dev_priv, TRANSCONF(cpu_transcoder)) & TRANSCONF_INTERLACE_MASK;
}

static void intel_get_transcoder_timings(struct intel_crtc *crtc,
					 struct intel_crtc_state *pipe_config)
{
	struct drm_device *dev = crtc->base.dev;
	struct drm_i915_private *dev_priv = to_i915(dev);
	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
	u32 tmp;

	tmp = intel_de_read(dev_priv, TRANS_HTOTAL(cpu_transcoder));
	adjusted_mode->crtc_hdisplay = REG_FIELD_GET(HACTIVE_MASK, tmp) + 1;
	adjusted_mode->crtc_htotal = REG_FIELD_GET(HTOTAL_MASK, tmp) + 1;

	if (!transcoder_is_dsi(cpu_transcoder)) {
		tmp = intel_de_read(dev_priv, TRANS_HBLANK(cpu_transcoder));
		adjusted_mode->crtc_hblank_start = REG_FIELD_GET(HBLANK_START_MASK, tmp) + 1;
		adjusted_mode->crtc_hblank_end = REG_FIELD_GET(HBLANK_END_MASK, tmp) + 1;
	}

	tmp = intel_de_read(dev_priv, TRANS_HSYNC(cpu_transcoder));
	adjusted_mode->crtc_hsync_start = REG_FIELD_GET(HSYNC_START_MASK, tmp) + 1;
	adjusted_mode->crtc_hsync_end = REG_FIELD_GET(HSYNC_END_MASK, tmp) + 1;

	tmp = intel_de_read(dev_priv, TRANS_VTOTAL(cpu_transcoder));
	adjusted_mode->crtc_vdisplay = REG_FIELD_GET(VACTIVE_MASK, tmp) + 1;
	adjusted_mode->crtc_vtotal = REG_FIELD_GET(VTOTAL_MASK, tmp) + 1;

	/* FIXME TGL+ DSI transcoders have this! */
	if (!transcoder_is_dsi(cpu_transcoder)) {
		tmp = intel_de_read(dev_priv, TRANS_VBLANK(cpu_transcoder));
		adjusted_mode->crtc_vblank_start = REG_FIELD_GET(VBLANK_START_MASK, tmp) + 1;
		adjusted_mode->crtc_vblank_end = REG_FIELD_GET(VBLANK_END_MASK, tmp) + 1;
	}
	tmp = intel_de_read(dev_priv, TRANS_VSYNC(cpu_transcoder));
	adjusted_mode->crtc_vsync_start = REG_FIELD_GET(VSYNC_START_MASK, tmp) + 1;
	adjusted_mode->crtc_vsync_end = REG_FIELD_GET(VSYNC_END_MASK, tmp) + 1;

	if (intel_pipe_is_interlaced(pipe_config)) {
		adjusted_mode->flags |= DRM_MODE_FLAG_INTERLACE;
		adjusted_mode->crtc_vtotal += 1;
		adjusted_mode->crtc_vblank_end += 1;
	}

	if (DISPLAY_VER(dev_priv) >= 13 && !transcoder_is_dsi(cpu_transcoder))
		adjusted_mode->crtc_vblank_start =
			adjusted_mode->crtc_vdisplay +
			intel_de_read(dev_priv, TRANS_SET_CONTEXT_LATENCY(cpu_transcoder));
}

static void intel_bigjoiner_adjust_pipe_src(struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);
	enum pipe master_pipe, pipe = crtc->pipe;
	int width;

	if (num_pipes < 2)
		return;

	master_pipe = bigjoiner_master_pipe(crtc_state);
	width = drm_rect_width(&crtc_state->pipe_src);

	drm_rect_translate_to(&crtc_state->pipe_src,
			      (pipe - master_pipe) * width, 0);
}

static void intel_get_pipe_src_size(struct intel_crtc *crtc,
				    struct intel_crtc_state *pipe_config)
{
	struct drm_device *dev = crtc->base.dev;
	struct drm_i915_private *dev_priv = to_i915(dev);
	u32 tmp;

	tmp = intel_de_read(dev_priv, PIPESRC(crtc->pipe));

	drm_rect_init(&pipe_config->pipe_src, 0, 0,
		      REG_FIELD_GET(PIPESRC_WIDTH_MASK, tmp) + 1,
		      REG_FIELD_GET(PIPESRC_HEIGHT_MASK, tmp) + 1);

	intel_bigjoiner_adjust_pipe_src(pipe_config);
}

void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
	u32 val = 0;

	/*
	 * - We keep both pipes enabled on 830
	 * - During modeset the pipe is still disabled and must remain so
	 * - During fastset the pipe is already enabled and must remain so
	 */
	if (IS_I830(dev_priv) || !intel_crtc_needs_modeset(crtc_state))
		val |= TRANSCONF_ENABLE;

	if (crtc_state->double_wide)
		val |= TRANSCONF_DOUBLE_WIDE;

	/* only g4x and later have fancy bpc/dither controls */
	if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
	    IS_CHERRYVIEW(dev_priv)) {
		/* Bspec claims that we can't use dithering for 30bpp pipes. */
		if (crtc_state->dither && crtc_state->pipe_bpp != 30)
			val |= TRANSCONF_DITHER_EN |
				TRANSCONF_DITHER_TYPE_SP;

		switch (crtc_state->pipe_bpp) {
		default:
			/* Case prevented by intel_choose_pipe_bpp_dither. */
			MISSING_CASE(crtc_state->pipe_bpp);
			fallthrough;
		case 18:
			val |= TRANSCONF_BPC_6;
			break;
		case 24:
			val |= TRANSCONF_BPC_8;
			break;
		case 30:
			val |= TRANSCONF_BPC_10;
			break;
		}
	}

	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
		if (DISPLAY_VER(dev_priv) < 4 ||
		    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
			val |= TRANSCONF_INTERLACE_W_FIELD_INDICATION;
		else
			val |= TRANSCONF_INTERLACE_W_SYNC_SHIFT;
	} else {
		val |= TRANSCONF_INTERLACE_PROGRESSIVE;
	}

	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
	     crtc_state->limited_color_range)
		val |= TRANSCONF_COLOR_RANGE_SELECT;

	val |= TRANSCONF_GAMMA_MODE(crtc_state->gamma_mode);

	if (crtc_state->wgc_enable)
		val |= TRANSCONF_WGC_ENABLE;

	val |= TRANSCONF_FRAME_START_DELAY(crtc_state->framestart_delay - 1);

	intel_de_write(dev_priv, TRANSCONF(cpu_transcoder), val);
	intel_de_posting_read(dev_priv, TRANSCONF(cpu_transcoder));
}

static bool i9xx_has_pfit(struct drm_i915_private *dev_priv)
{
	if (IS_I830(dev_priv))
		return false;

	return DISPLAY_VER(dev_priv) >= 4 ||
		IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
}

static void i9xx_get_pfit_config(struct intel_crtc_state *crtc_state)
{
	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum pipe pipe;
	u32 tmp;

	if (!i9xx_has_pfit(dev_priv))
		return;

	tmp = intel_de_read(dev_priv, PFIT_CONTROL);
	if (!(tmp & PFIT_ENABLE))
		return;

	/* Check whether the pfit is attached to our pipe. */
	if (DISPLAY_VER(dev_priv) >= 4)
		pipe = REG_FIELD_GET(PFIT_PIPE_MASK, tmp);
	else
		pipe = PIPE_B;

	if (pipe != crtc->pipe)
		return;

	crtc_state->gmch_pfit.control = tmp;
	crtc_state->gmch_pfit.pgm_ratios =
		intel_de_read(dev_priv, PFIT_PGM_RATIOS);
}

static enum intel_output_format
bdw_get_pipe_misc_output_format(struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	u32 tmp;

	tmp = intel_de_read(dev_priv, PIPE_MISC(crtc->pipe));

	if (tmp & PIPE_MISC_YUV420_ENABLE) {
		/* We support 4:2:0 in full blend mode only */
		drm_WARN_ON(&dev_priv->drm,
			    (tmp & PIPE_MISC_YUV420_MODE_FULL_BLEND) == 0);

		return INTEL_OUTPUT_FORMAT_YCBCR420;
	} else if (tmp & PIPE_MISC_OUTPUT_COLORSPACE_YUV) {
		return INTEL_OUTPUT_FORMAT_YCBCR444;
	} else {
		return INTEL_OUTPUT_FORMAT_RGB;
	}
}

static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
				 struct intel_crtc_state *pipe_config)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	enum intel_display_power_domain power_domain;
	intel_wakeref_t wakeref;
	u32 tmp;
	bool ret;

	power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
	if (!wakeref)
		return false;

	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
	pipe_config->sink_format = pipe_config->output_format;
	pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
	pipe_config->shared_dpll = NULL;

	ret = false;

	tmp = intel_de_read(dev_priv, TRANSCONF(pipe_config->cpu_transcoder));
	if (!(tmp & TRANSCONF_ENABLE))
		goto out;

	if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
	    IS_CHERRYVIEW(dev_priv)) {
		switch (tmp & TRANSCONF_BPC_MASK) {
		case TRANSCONF_BPC_6:
			pipe_config->pipe_bpp = 18;
			break;
		case TRANSCONF_BPC_8:
			pipe_config->pipe_bpp = 24;
			break;
		case TRANSCONF_BPC_10:
			pipe_config->pipe_bpp = 30;
			break;
		default:
			MISSING_CASE(tmp);
			break;
		}
	}

	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
	    (tmp & TRANSCONF_COLOR_RANGE_SELECT))
		pipe_config->limited_color_range = true;

	pipe_config->gamma_mode = REG_FIELD_GET(TRANSCONF_GAMMA_MODE_MASK_I9XX, tmp);

	pipe_config->framestart_delay = REG_FIELD_GET(TRANSCONF_FRAME_START_DELAY_MASK, tmp) + 1;

	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
	    (tmp & TRANSCONF_WGC_ENABLE))
		pipe_config->wgc_enable = true;

	intel_color_get_config(pipe_config);

	if (DISPLAY_VER(dev_priv) < 4)
		pipe_config->double_wide = tmp & TRANSCONF_DOUBLE_WIDE;

	intel_get_transcoder_timings(crtc, pipe_config);
	intel_get_pipe_src_size(crtc, pipe_config);

	i9xx_get_pfit_config(pipe_config);

	if (DISPLAY_VER(dev_priv) >= 4) {
		/* No way to read it out on pipes B and C */
		if (IS_CHERRYVIEW(dev_priv) && crtc->pipe != PIPE_A)
			tmp = dev_priv->display.state.chv_dpll_md[crtc->pipe];
		else
			tmp = intel_de_read(dev_priv, DPLL_MD(crtc->pipe));
		pipe_config->pixel_multiplier =
			((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
			 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
		pipe_config->dpll_hw_state.dpll_md = tmp;
	} else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
		   IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
		tmp = intel_de_read(dev_priv, DPLL(crtc->pipe));
		pipe_config->pixel_multiplier =
			((tmp & SDVO_MULTIPLIER_MASK)
			 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
	} else {
		/* Note that on i915G/GM the pixel multiplier is in the sdvo
		 * port and will be fixed up in the encoder->get_config
		 * function. */
		pipe_config->pixel_multiplier = 1;
	}
	pipe_config->dpll_hw_state.dpll = intel_de_read(dev_priv,
							DPLL(crtc->pipe));
	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
		pipe_config->dpll_hw_state.fp0 = intel_de_read(dev_priv,
							       FP0(crtc->pipe));
		pipe_config->dpll_hw_state.fp1 = intel_de_read(dev_priv,
							       FP1(crtc->pipe));
	} else {
		/* Mask out read-only status bits. */
		pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
						     DPLL_PORTC_READY_MASK |
						     DPLL_PORTB_READY_MASK);
	}

	if (IS_CHERRYVIEW(dev_priv))
		chv_crtc_clock_get(crtc, pipe_config);
	else