drm/i915: Introduce g4x_dp.c

Move the g4x+ DP code into a new file. This will leave mostly
platform agnostic code in intel_dp.c. Well, the misplaced phy
test stuff pretty much ruins that, but let's squint real hard
for now.

v2: Add comment exlaining which platforms are covered (Daniel)
    Leave intel_dp_unused_lane_mask() be since it is pretty generic

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210318161015.22070-6-ville.syrjala@linux.intel.com

7 files changed, 1468 insertions, 1420 deletions

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 921db06232c3..9c06b857dda0 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -240,6 +240,7 @@ i915-y += \
 	display/dvo_ns2501.o \
 	display/dvo_sil164.o \
 	display/dvo_tfp410.o \
+	display/g4x_dp.o \
 	display/icl_dsi.o \
 	display/intel_crt.o \
 	display/intel_ddi.o \
diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c b/drivers/gpu/drm/i915/display/g4x_dp.c
new file mode 100644
index 000000000000..a35f1886f25b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_dp.c
@@ -0,0 +1,1433 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * DisplayPort support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
+ */
+
+#include "g4x_dp.h"
+#include "intel_audio.h"
+#include "intel_connector.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dpio_phy.h"
+#include "intel_fifo_underrun.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_panel.h"
+#include "intel_pps.h"
+#include "intel_sideband.h"
+
+struct dp_link_dpll {
+	int clock;
+	struct dpll dpll;
+};
+
+static const struct dp_link_dpll g4x_dpll[] = {
+	{ 162000,
+		{ .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } },
+	{ 270000,
+		{ .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } }
+};
+
+static const struct dp_link_dpll pch_dpll[] = {
+	{ 162000,
+		{ .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } },
+	{ 270000,
+		{ .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } }
+};
+
+static const struct dp_link_dpll vlv_dpll[] = {
+	{ 162000,
+		{ .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } },
+	{ 270000,
+		{ .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } }
+};
+
+/*
+ * CHV supports eDP 1.4 that have  more link rates.
+ * Below only provides the fixed rate but exclude variable rate.
+ */
+static const struct dp_link_dpll chv_dpll[] = {
+	/*
+	 * CHV requires to program fractional division for m2.
+	 * m2 is stored in fixed point format using formula below
+	 * (m2_int << 22) | m2_fraction
+	 */
+	{ 162000,	/* m2_int = 32, m2_fraction = 1677722 */
+		{ .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } },
+	{ 270000,	/* m2_int = 27, m2_fraction = 0 */
+		{ .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } },
+};
+
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915)
+{
+	return IS_CHERRYVIEW(i915) ? &chv_dpll[0].dpll : &vlv_dpll[0].dpll;
+}
+
+void intel_dp_set_clock(struct intel_encoder *encoder,
+			struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct dp_link_dpll *divisor = NULL;
+	int i, count = 0;
+
+	if (IS_G4X(dev_priv)) {
+		divisor = g4x_dpll;
+		count = ARRAY_SIZE(g4x_dpll);
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		divisor = pch_dpll;
+		count = ARRAY_SIZE(pch_dpll);
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		divisor = chv_dpll;
+		count = ARRAY_SIZE(chv_dpll);
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		divisor = vlv_dpll;
+		count = ARRAY_SIZE(vlv_dpll);
+	}
+
+	if (divisor && count) {
+		for (i = 0; i < count; i++) {
+			if (pipe_config->port_clock == divisor[i].clock) {
+				pipe_config->dpll = divisor[i].dpll;
+				pipe_config->clock_set = true;
+				break;
+			}
+		}
+	}
+}
+
+static void intel_dp_prepare(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+
+	intel_dp_set_link_params(intel_dp,
+				 pipe_config->port_clock,
+				 pipe_config->lane_count);
+
+	/*
+	 * There are four kinds of DP registers:
+	 * IBX PCH
+	 * SNB CPU
+	 * IVB CPU
+	 * CPT PCH
+	 *
+	 * IBX PCH and CPU are the same for almost everything,
+	 * except that the CPU DP PLL is configured in this
+	 * register
+	 *
+	 * CPT PCH is quite different, having many bits moved
+	 * to the TRANS_DP_CTL register instead. That
+	 * configuration happens (oddly) in ilk_pch_enable
+	 */
+
+	/* Preserve the BIOS-computed detected bit. This is
+	 * supposed to be read-only.
+	 */
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
+
+	/* Handle DP bits in common between all three register formats */
+	intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
+	intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count);
+
+	/* Split out the IBX/CPU vs CPT settings */
+
+	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+			intel_dp->DP |= DP_SYNC_HS_HIGH;
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+			intel_dp->DP |= DP_SYNC_VS_HIGH;
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+		intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
+	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+		u32 trans_dp;
+
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+		trans_dp = intel_de_read(dev_priv, TRANS_DP_CTL(crtc->pipe));
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			trans_dp |= TRANS_DP_ENH_FRAMING;
+		else
+			trans_dp &= ~TRANS_DP_ENH_FRAMING;
+		intel_de_write(dev_priv, TRANS_DP_CTL(crtc->pipe), trans_dp);
+	} else {
+		if (IS_G4X(dev_priv) && pipe_config->limited_color_range)
+			intel_dp->DP |= DP_COLOR_RANGE_16_235;
+
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+			intel_dp->DP |= DP_SYNC_HS_HIGH;
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+			intel_dp->DP |= DP_SYNC_VS_HIGH;
+		intel_dp->DP |= DP_LINK_TRAIN_OFF;
+
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+		if (IS_CHERRYVIEW(dev_priv))
+			intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
+		else
+			intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
+	}
+}
+
+static void assert_dp_port(struct intel_dp *intel_dp, bool state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	bool cur_state = intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN;
+
+	I915_STATE_WARN(cur_state != state,
+			"[ENCODER:%d:%s] state assertion failure (expected %s, current %s)\n",
+			dig_port->base.base.base.id, dig_port->base.base.name,
+			onoff(state), onoff(cur_state));
+}
+#define assert_dp_port_disabled(d) assert_dp_port((d), false)
+
+static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
+{
+	bool cur_state = intel_de_read(dev_priv, DP_A) & DP_PLL_ENABLE;
+
+	I915_STATE_WARN(cur_state != state,
+			"eDP PLL state assertion failure (expected %s, current %s)\n",
+			onoff(state), onoff(cur_state));
+}
+#define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
+#define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
+
+static void ilk_edp_pll_on(struct intel_dp *intel_dp,
+			   const struct intel_crtc_state *pipe_config)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	assert_pipe_disabled(dev_priv, pipe_config->cpu_transcoder);
+	assert_dp_port_disabled(intel_dp);
+	assert_edp_pll_disabled(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "enabling eDP PLL for clock %d\n",
+		    pipe_config->port_clock);
+
+	intel_dp->DP &= ~DP_PLL_FREQ_MASK;
+
+	if (pipe_config->port_clock == 162000)
+		intel_dp->DP |= DP_PLL_FREQ_162MHZ;
+	else
+		intel_dp->DP |= DP_PLL_FREQ_270MHZ;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(500);
+
+	/*
+	 * [DevILK] Work around required when enabling DP PLL
+	 * while a pipe is enabled going to FDI:
+	 * 1. Wait for the start of vertical blank on the enabled pipe going to FDI
+	 * 2. Program DP PLL enable
+	 */
+	if (IS_GEN(dev_priv, 5))
+		intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe);
+
+	intel_dp->DP |= DP_PLL_ENABLE;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(200);
+}
+
+static void ilk_edp_pll_off(struct intel_dp *intel_dp,
+			    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);
+
+	assert_pipe_disabled(dev_priv, old_crtc_state->cpu_transcoder);
+	assert_dp_port_disabled(intel_dp);
+	assert_edp_pll_enabled(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "disabling eDP PLL\n");
+
+	intel_dp->DP &= ~DP_PLL_ENABLE;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(200);
+}
+
+static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
+				 enum port port, enum pipe *pipe)
+{
+	enum pipe p;
+
+	for_each_pipe(dev_priv, p) {
+		u32 val = intel_de_read(dev_priv, TRANS_DP_CTL(p));
+
+		if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
+			*pipe = p;
+			return true;
+		}
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "No pipe for DP port %c found\n",
+		    port_name(port));
+
+	/* must initialize pipe to something for the asserts */
+	*pipe = PIPE_A;
+
+	return false;
+}
+
+bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
+			   i915_reg_t dp_reg, enum port port,
+			   enum pipe *pipe)
+{
+	bool ret;
+	u32 val;
+
+	val = intel_de_read(dev_priv, dp_reg);
+
+	ret = val & DP_PORT_EN;
+
+	/* asserts want to know the pipe even if the port is disabled */
+	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+		*pipe = (val & DP_PIPE_SEL_MASK_IVB) >> DP_PIPE_SEL_SHIFT_IVB;
+	else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
+		ret &= cpt_dp_port_selected(dev_priv, port, pipe);
+	else if (IS_CHERRYVIEW(dev_priv))
+		*pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
+	else
+		*pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
+
+	return ret;
+}
+
+static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
+				  enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
+				    encoder->port, pipe);
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static void intel_dp_get_config(struct intel_encoder *encoder,
+				struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u32 tmp, flags = 0;
+	enum port port = encoder->port;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+
+	if (encoder->type == INTEL_OUTPUT_EDP)
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
+	else
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
+
+	tmp = intel_de_read(dev_priv, intel_dp->output_reg);
+
+	pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
+
+	if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+		u32 trans_dp = intel_de_read(dev_priv,
+					     TRANS_DP_CTL(crtc->pipe));
+
+		if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
+			flags |= DRM_MODE_FLAG_PHSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NHSYNC;
+
+		if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH)
+			flags |= DRM_MODE_FLAG_PVSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NVSYNC;
+	} else {
+		if (tmp & DP_SYNC_HS_HIGH)
+			flags |= DRM_MODE_FLAG_PHSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NHSYNC;
+
+		if (tmp & DP_SYNC_VS_HIGH)
+			flags |= DRM_MODE_FLAG_PVSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NVSYNC;
+	}
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
+		pipe_config->limited_color_range = true;
+
+	pipe_config->lane_count =
+		((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
+
+	intel_dp_get_m_n(crtc, pipe_config);
+
+	if (port == PORT_A) {
+		if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)
+			pipe_config->port_clock = 162000;
+		else
+			pipe_config->port_clock = 270000;
+	}
+
+	pipe_config->hw.adjusted_mode.crtc_clock =
+		intel_dotclock_calculate(pipe_config->port_clock,
+					 &pipe_config->dp_m_n);
+
+	if (intel_dp_is_edp(intel_dp) && dev_priv->vbt.edp.bpp &&
+	    pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
+		/*
+		 * This is a big fat ugly hack.
+		 *
+		 * Some machines in UEFI boot mode provide us a VBT that has 18
+		 * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
+		 * unknown we fail to light up. Yet the same BIOS boots up with
+		 * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
+		 * max, not what it tells us to use.
+		 *
+		 * Note: This will still be broken if the eDP panel is not lit
+		 * up by the BIOS, and thus we can't get the mode at module
+		 * load.
+		 */
+		drm_dbg_kms(&dev_priv->drm,
+			    "pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
+			    pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
+		dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
+	}
+}
+
+static void
+intel_dp_link_down(struct intel_encoder *encoder,
+		   const struct intel_crtc_state *old_crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	enum port port = encoder->port;
+	u32 DP = intel_dp->DP;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			(intel_de_read(dev_priv, intel_dp->output_reg) &
+			 DP_PORT_EN) == 0))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+	    (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
+		DP &= ~DP_LINK_TRAIN_MASK_CPT;
+		DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
+	} else {
+		DP &= ~DP_LINK_TRAIN_MASK;
+		DP |= DP_LINK_TRAIN_PAT_IDLE;
+	}
+	intel_de_write(dev_priv, intel_dp->output_reg, DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE);
+	intel_de_write(dev_priv, intel_dp->output_reg, DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	/*
+	 * HW workaround for IBX, we need to move the port
+	 * to transcoder A after disabling it to allow the
+	 * matching HDMI port to be enabled on transcoder A.
+	 */
+	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
+		/*
+		 * We get CPU/PCH FIFO underruns on the other pipe when
+		 * doing the workaround. Sweep them under the rug.
+		 */
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+
+		/* always enable with pattern 1 (as per spec) */
+		DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
+		DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
+			DP_LINK_TRAIN_PAT_1;
+		intel_de_write(dev_priv, intel_dp->output_reg, DP);
+		intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+		DP &= ~DP_PORT_EN;
+		intel_de_write(dev_priv, intel_dp->output_reg, DP);
+		intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+		intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+	}
+
+	msleep(intel_dp->pps.panel_power_down_delay);
+
+	intel_dp->DP = DP;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		intel_wakeref_t wakeref;
+
+		with_intel_pps_lock(intel_dp, wakeref)
+			intel_dp->pps.active_pipe = INVALID_PIPE;
+	}
+}
+
+static void intel_disable_dp(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	intel_dp->link_trained = false;
+
+	if (old_crtc_state->has_audio)
+		intel_audio_codec_disable(encoder,
+					  old_crtc_state, old_conn_state);
+
+	/*
+	 * Make sure the panel is off before trying to change the mode.
+	 * But also ensure that we have vdd while we switch off the panel.
+	 */
+	intel_pps_vdd_on(intel_dp);
+	intel_edp_backlight_off(old_conn_state);
+	intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
+	intel_pps_off(intel_dp);
+}
+
+static void g4x_disable_dp(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void vlv_disable_dp(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void g4x_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+
+	/*
+	 * Bspec does not list a specific disable sequence for g4x DP.
+	 * Follow the ilk+ sequence (disable pipe before the port) for
+	 * g4x DP as it does not suffer from underruns like the normal
+	 * g4x modeset sequence (disable pipe after the port).
+	 */
+	intel_dp_link_down(encoder, old_crtc_state);
+
+	/* Only ilk+ has port A */
+	if (port == PORT_A)
+		ilk_edp_pll_off(intel_dp, old_crtc_state);
+}
+
+static void vlv_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	intel_dp_link_down(encoder, old_crtc_state);
+}
+
+static void chv_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	intel_dp_link_down(encoder, old_crtc_state);
+
+	vlv_dpio_get(dev_priv);
+
+	/* Assert data lane reset */
+	chv_data_lane_soft_reset(encoder, old_crtc_state, true);
+
+	vlv_dpio_put(dev_priv);
+}
+
+static void
+cpt_set_link_train(struct intel_dp *intel_dp,
+		   const struct intel_crtc_state *crtc_state,
+		   u8 dp_train_pat)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 *DP = &intel_dp->DP;
+
+	*DP &= ~DP_LINK_TRAIN_MASK_CPT;
+
+	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+	case DP_TRAINING_PATTERN_DISABLE:
+		*DP |= DP_LINK_TRAIN_OFF_CPT;
+		break;
+	case DP_TRAINING_PATTERN_1:
+		*DP |= DP_LINK_TRAIN_PAT_1_CPT;
+		break;
+	case DP_TRAINING_PATTERN_2:
+		*DP |= DP_LINK_TRAIN_PAT_2_CPT;
+		break;
+	default:
+		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+		return;
+	}
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void
+g4x_set_link_train(struct intel_dp *intel_dp,
+		   const struct intel_crtc_state *crtc_state,
+		   u8 dp_train_pat)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 *DP = &intel_dp->DP;
+
+	*DP &= ~DP_LINK_TRAIN_MASK;
+
+	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+	case DP_TRAINING_PATTERN_DISABLE:
+		*DP |= DP_LINK_TRAIN_OFF;
+		break;
+	case DP_TRAINING_PATTERN_1:
+		*DP |= DP_LINK_TRAIN_PAT_1;
+		break;
+	case DP_TRAINING_PATTERN_2:
+		*DP |= DP_LINK_TRAIN_PAT_2;
+		break;
+	default:
+		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+		return;
+	}
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_dp_enable_port(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/* enable with pattern 1 (as per spec) */
+
+	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
+					       DP_TRAINING_PATTERN_1);
+
+	/*
+	 * Magic for VLV/CHV. We _must_ first set up the register
+	 * without actually enabling the port, and then do another
+	 * write to enable the port. Otherwise link training will
+	 * fail when the power sequencer is freshly used for this port.
+	 */
+	intel_dp->DP |= DP_PORT_EN;
+	if (crtc_state->has_audio)
+		intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_enable_dp(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	u32 dp_reg = intel_de_read(dev_priv, intel_dp->output_reg);
+	enum pipe pipe = crtc->pipe;
+	intel_wakeref_t wakeref;
+
+	if (drm_WARN_ON(&dev_priv->drm, dp_reg & DP_PORT_EN))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+			vlv_pps_init(encoder, pipe_config);
+
+		intel_dp_enable_port(intel_dp, pipe_config);
+
+		intel_pps_vdd_on_unlocked(intel_dp);
+		intel_pps_on_unlocked(intel_dp);
+		intel_pps_vdd_off_unlocked(intel_dp, true);
+	}
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		unsigned int lane_mask = 0x0;
+
+		if (IS_CHERRYVIEW(dev_priv))
+			lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
+
+		vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
+				    lane_mask);
+	}
+
+	intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+	intel_dp_configure_protocol_converter(intel_dp, pipe_config);
+	intel_dp_check_frl_training(intel_dp);
+	intel_dp_pcon_dsc_configure(intel_dp, pipe_config);
+	intel_dp_start_link_train(intel_dp, pipe_config);
+	intel_dp_stop_link_train(intel_dp, pipe_config);
+
+	if (pipe_config->has_audio) {
+		drm_dbg(&dev_priv->drm, "Enabling DP audio on pipe %c\n",
+			pipe_name(pipe));
+		intel_audio_codec_enable(encoder, pipe_config, conn_state);
+	}
+}
+
+static void g4x_enable_dp(struct intel_atomic_state *state,
+			  struct intel_encoder *encoder,
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
+{
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+	intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void vlv_enable_dp(struct intel_atomic_state *state,
+			  struct intel_encoder *encoder,
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
+{
+	intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void g4x_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+
+	intel_dp_prepare(encoder, pipe_config);
+
+	/* Only ilk+ has port A */
+	if (port == PORT_A)
+		ilk_edp_pll_on(intel_dp, pipe_config);
+}
+
+static void vlv_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	vlv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+}
+
+static void vlv_dp_pre_pll_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	intel_dp_prepare(encoder, pipe_config);
+
+	vlv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	chv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+
+	/* Second common lane will stay alive on its own now */
+	chv_phy_release_cl2_override(encoder);
+}
+
+static void chv_dp_pre_pll_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	intel_dp_prepare(encoder, pipe_config);
+
+	chv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_dp_post_pll_disable(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state)
+{
+	chv_phy_post_pll_disable(encoder, old_crtc_state);
+}
+
+static u8 intel_dp_voltage_max_2(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+}
+
+static u8 intel_dp_voltage_max_3(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+}
+
+static u8 intel_dp_preemph_max_2(struct intel_dp *intel_dp)
+{
+	return DP_TRAIN_PRE_EMPH_LEVEL_2;
+}
+
+static u8 intel_dp_preemph_max_3(struct intel_dp *intel_dp)
+{
+	return DP_TRAIN_PRE_EMPH_LEVEL_3;
+}
+
+static void vlv_set_signal_levels(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	unsigned long demph_reg_value, preemph_reg_value,
+		uniqtranscale_reg_value;
+	u8 train_set = intel_dp->train_set[0];
+
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+		preemph_reg_value = 0x0004000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B405555;
+			uniqtranscale_reg_value = 0x552AB83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x5548B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			demph_reg_value = 0x2B245555;
+			uniqtranscale_reg_value = 0x5560B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+			demph_reg_value = 0x2B405555;
+			uniqtranscale_reg_value = 0x5598DA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		preemph_reg_value = 0x0002000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x5552B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B404848;
+			uniqtranscale_reg_value = 0x5580B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		preemph_reg_value = 0x0000000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B305555;
+			uniqtranscale_reg_value = 0x5570B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B2B4040;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		preemph_reg_value = 0x0006000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x1B405555;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	default:
+		return;
+	}
+
+	vlv_set_phy_signal_level(encoder, crtc_state,
+				 demph_reg_value, preemph_reg_value,
+				 uniqtranscale_reg_value, 0);
+}
+
+static void chv_set_signal_levels(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	u32 deemph_reg_value, margin_reg_value;
+	bool uniq_trans_scale = false;
+	u8 train_set = intel_dp->train_set[0];
+
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 128;
+			margin_reg_value = 52;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 128;
+			margin_reg_value = 77;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			deemph_reg_value = 128;
+			margin_reg_value = 102;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+			deemph_reg_value = 128;
+			margin_reg_value = 154;
+			uniq_trans_scale = true;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 85;
+			margin_reg_value = 78;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 85;
+			margin_reg_value = 116;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			deemph_reg_value = 85;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 64;
+			margin_reg_value = 104;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 64;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 43;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	default:
+		return;
+	}
+
+	chv_set_phy_signal_level(encoder, crtc_state,
+				 deemph_reg_value, margin_reg_value,
+				 uniq_trans_scale);
+}
+
+static u32 g4x_signal_levels(u8 train_set)
+{
+	u32 signal_levels = 0;
+
+	switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+	default:
+		signal_levels |= DP_VOLTAGE_0_4;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+		signal_levels |= DP_VOLTAGE_0_6;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+		signal_levels |= DP_VOLTAGE_0_8;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+		signal_levels |= DP_VOLTAGE_1_2;
+		break;
+	}
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+	default:
+		signal_levels |= DP_PRE_EMPHASIS_0;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		signal_levels |= DP_PRE_EMPHASIS_3_5;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		signal_levels |= DP_PRE_EMPHASIS_6;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		signal_levels |= DP_PRE_EMPHASIS_9_5;
+		break;
+	}
+	return signal_levels;
+}
+
+static void
+g4x_set_signal_levels(struct intel_dp *intel_dp,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = g4x_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~(DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK);
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* SNB CPU eDP voltage swing and pre-emphasis control */
+static u32 snb_cpu_edp_signal_levels(u8 train_set)
+{
+	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+					DP_TRAIN_PRE_EMPHASIS_MASK);
+
+	switch (signal_levels) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+		return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B;
+	default:
+		MISSING_CASE(signal_levels);
+		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+	}
+}
+
+static void
+snb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = snb_cpu_edp_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* IVB CPU eDP voltage swing and pre-emphasis control */
+static u32 ivb_cpu_edp_signal_levels(u8 train_set)
+{
+	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+					DP_TRAIN_PRE_EMPHASIS_MASK);
+
+	switch (signal_levels) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_400MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_400MV_3_5DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+		return EDP_LINK_TRAIN_400MV_6DB_IVB;
+
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_600MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_600MV_3_5DB_IVB;
+
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_800MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_800MV_3_5DB_IVB;
+
+	default:
+		MISSING_CASE(signal_levels);
+		return EDP_LINK_TRAIN_500MV_0DB_IVB;
+	}
+}
+
+static void
+ivb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = ivb_cpu_edp_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/*
+ * If display is now connected check links status,
+ * there has been known issues of link loss triggering
+ * long pulse.
+ *
+ * Some sinks (eg. ASUS PB287Q) seem to perform some
+ * weird HPD ping pong during modesets. So we can apparently
+ * end up with HPD going low during a modeset, and then
+ * going back up soon after. And once that happens we must
+ * retrain the link to get a picture. That's in case no
+ * userspace component reacted to intermittent HPD dip.
+ */
+static enum intel_hotplug_state
+intel_dp_hotplug(struct intel_encoder *encoder,
+		 struct intel_connector *connector)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_modeset_acquire_ctx ctx;
+	enum intel_hotplug_state state;
+	int ret;
+
+	if (intel_dp->compliance.test_active &&
+	    intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
+		intel_dp_phy_test(encoder);
+		/* just do the PHY test and nothing else */
+		return INTEL_HOTPLUG_UNCHANGED;
+	}
+
+	state = intel_encoder_hotplug(encoder, connector);
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	for (;;) {
+		ret = intel_dp_retrain_link(encoder, &ctx);
+
+		if (ret == -EDEADLK) {
+			drm_modeset_backoff(&ctx);
+			continue;
+		}
+
+		break;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	drm_WARN(encoder->base.dev, ret,
+		 "Acquiring modeset locks failed with %i\n", ret);
+
+	/*
+	 * Keeping it consistent with intel_ddi_hotplug() and
+	 * intel_hdmi_hotplug().
+	 */
+	if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
+		state = INTEL_HOTPLUG_RETRY;
+
+	return state;
+}
+
+static bool ibx_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->hotplug.pch_hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, SDEISR) & bit;
+}
+
+static bool g4x_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit;
+
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_B:
+		bit = PORTB_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	case HPD_PORT_C:
+		bit = PORTC_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	case HPD_PORT_D:
+		bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	default:
+		MISSING_CASE(encoder->hpd_pin);
+		return false;
+	}
+
+	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool gm45_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit;
+
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_B:
+		bit = PORTB_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	case HPD_PORT_C:
+		bit = PORTC_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	case HPD_PORT_D:
+		bit = PORTD_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	default:
+		MISSING_CASE(encoder->hpd_pin);
+		return false;
+	}
+
+	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool ilk_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->hotplug.hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, DEISR) & bit;
+}
+
+static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
+{
+	intel_dp_encoder_flush_work(encoder);
+
+	drm_encoder_cleanup(encoder);
+	kfree(enc_to_dig_port(to_intel_encoder(encoder)));
+}
+
+enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	enum pipe pipe;
+
+	if (intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
+				  encoder->port, &pipe))
+		return pipe;
+
+	return INVALID_PIPE;
+}
+
+static void intel_dp_encoder_reset(struct drm_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
+
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+
+	intel_dp->reset_link_params = true;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		intel_wakeref_t wakeref;
+
+		with_intel_pps_lock(intel_dp, wakeref)
+			intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
+	}
+
+	intel_pps_encoder_reset(intel_dp);
+}
+
+static const struct drm_encoder_funcs intel_dp_enc_funcs = {
+	.reset = intel_dp_encoder_reset,
+	.destroy = intel_dp_encoder_destroy,
+};
+
+bool intel_dp_init(struct drm_i915_private *dev_priv,
+		   i915_reg_t output_reg,
+		   enum port port)
+{
+	struct intel_digital_port *dig_port;
+	struct intel_encoder *intel_encoder;
+	struct drm_encoder *encoder;
+	struct intel_connector *intel_connector;
+
+	dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
+	if (!dig_port)
+		return false;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector)
+		goto err_connector_alloc;
+
+	intel_encoder = &dig_port->base;
+	encoder = &intel_encoder->base;
+
+	mutex_init(&dig_port->hdcp_mutex);
+
+	if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+			     &intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
+			     "DP %c", port_name(port)))
+		goto err_encoder_init;
+
+	intel_encoder->hotplug = intel_dp_hotplug;
+	intel_encoder->compute_config = intel_dp_compute_config;
+	intel_encoder->get_hw_state = intel_dp_get_hw_state;
+	intel_encoder->get_config = intel_dp_get_config;
+	intel_encoder->sync_state = intel_dp_sync_state;
+	intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
+	intel_encoder->update_pipe = intel_panel_update_backlight;
+	intel_encoder->suspend = intel_dp_encoder_suspend;
+	intel_encoder->shutdown = intel_dp_encoder_shutdown;
+	if (IS_CHERRYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
+		intel_encoder->pre_enable = chv_pre_enable_dp;
+		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
+		intel_encoder->post_disable = chv_post_disable_dp;
+		intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
+		intel_encoder->pre_enable = vlv_pre_enable_dp;
+		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
+		intel_encoder->post_disable = vlv_post_disable_dp;
+	} else {
+		intel_encoder->pre_enable = g4x_pre_enable_dp;
+		intel_encoder->enable = g4x_enable_dp;
+		intel_encoder->disable = g4x_disable_dp;
+		intel_encoder->post_disable = g4x_post_disable_dp;
+	}
+
+	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+	    (HAS_PCH_CPT(dev_priv) && port != PORT_A))
+		dig_port->dp.set_link_train = cpt_set_link_train;
+	else
+		dig_port->dp.set_link_train = g4x_set_link_train;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		dig_port->dp.set_signal_levels = chv_set_signal_levels;
+	else if (IS_VALLEYVIEW(dev_priv))
+		dig_port->dp.set_signal_levels = vlv_set_signal_levels;
+	else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+		dig_port->dp.set_signal_levels = ivb_cpu_edp_set_signal_levels;
+	else if (IS_GEN(dev_priv, 6) && port == PORT_A)
+		dig_port->dp.set_signal_levels = snb_cpu_edp_set_signal_levels;
+	else
+		dig_port->dp.set_signal_levels = g4x_set_signal_levels;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv) ||
+	    (HAS_PCH_SPLIT(dev_priv) && port != PORT_A)) {
+		dig_port->dp.preemph_max = intel_dp_preemph_max_3;
+		dig_port->dp.voltage_max = intel_dp_voltage_max_3;
+	} else {
+		dig_port->dp.preemph_max = intel_dp_preemph_max_2;
+		dig_port->dp.voltage_max = intel_dp_voltage_max_2;
+	}
+
+	dig_port->dp.output_reg = output_reg;
+	dig_port->max_lanes = 4;
+
+	intel_encoder->type = INTEL_OUTPUT_DP;
+	intel_encoder->power_domain = intel_port_to_power_domain(port);
+	if (IS_CHERRYVIEW(dev_priv)) {
+		if (port == PORT_D)
+			intel_encoder->pipe_mask = BIT(PIPE_C);
+		else
+			intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
+	} else {
+		intel_encoder->pipe_mask = ~0;
+	}
+	intel_encoder->cloneable = 0;
+	intel_encoder->port = port;
+	intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
+
+	dig_port->hpd_pulse = intel_dp_hpd_pulse;
+
+	if (HAS_GMCH(dev_priv)) {
+		if (IS_GM45(dev_priv))
+			dig_port->connected = gm45_digital_port_connected;
+		else
+			dig_port->connected = g4x_digital_port_connected;
+	} else {
+		if (port == PORT_A)
+			dig_port->connected = ilk_digital_port_connected;
+		else
+			dig_port->connected = ibx_digital_port_connected;
+	}
+
+	if (port != PORT_A)
+		intel_infoframe_init(dig_port);
+
+	dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
+	if (!intel_dp_init_connector(dig_port, intel_connector))
+		goto err_init_connector;
+
+	return true;
+
+err_init_connector:
+	drm_encoder_cleanup(encoder);
+err_encoder_init:
+	kfree(intel_connector);
+err_connector_alloc:
+	kfree(dig_port);
+	return false;
+}
diff --git a/drivers/gpu/drm/i915/display/g4x_dp.h b/drivers/gpu/drm/i915/display/g4x_dp.h
new file mode 100644
index 000000000000..530760f0d8a2
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_dp.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _G4X_DP_H_
+#define _G4X_DP_H_
+
+#include <linux/types.h>
+
+#include "i915_reg.h"
+
+enum pipe;
+enum port;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915);
+enum pipe vlv_active_pipe(struct intel_dp *intel_dp);
+void intel_dp_set_clock(struct intel_encoder *encoder,
+			struct intel_crtc_state *pipe_config);
+bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
+			   i915_reg_t dp_reg, enum port port,
+			   enum pipe *pipe);
+bool intel_dp_init(struct drm_i915_private *dev_priv,
+		   i915_reg_t output_reg,
+		   enum port port);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3957f7497461..0a0d1392c215 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -66,6 +66,7 @@
 
 #include "gt/intel_rps.h"
 
+#include "g4x_dp.h"
 #include "i915_drv.h"
 #include "intel_acpi.h"
 #include "intel_atomic.h"
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 07fbfa7ea915..19ed7cf2ed77 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -39,6 +39,7 @@
 #include <drm/drm_edid.h>
 #include <drm/drm_probe_helper.h>
 
+#include "g4x_dp.h"
 #include "i915_debugfs.h"
 #include "i915_drv.h"
 #include "intel_atomic.h"
@@ -82,52 +83,6 @@
 #define INTEL_DP_RESOLUTION_STANDARD	(2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
 #define INTEL_DP_RESOLUTION_FAILSAFE	(3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
 
-struct dp_link_dpll {
-	int clock;
-	struct dpll dpll;
-};
-
-static const struct dp_link_dpll g4x_dpll[] = {
-	{ 162000,
-		{ .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } },
-	{ 270000,
-		{ .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } }
-};
-
-static const struct dp_link_dpll pch_dpll[] = {
-	{ 162000,
-		{ .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } },
-	{ 270000,
-		{ .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } }
-};
-
-static const struct dp_link_dpll vlv_dpll[] = {
-	{ 162000,
-		{ .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } },
-	{ 270000,
-		{ .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } }
-};
-
-/*
- * CHV supports eDP 1.4 that have  more link rates.
- * Below only provides the fixed rate but exclude variable rate.
- */
-static const struct dp_link_dpll chv_dpll[] = {
-	/*
-	 * CHV requires to program fractional division for m2.
-	 * m2 is stored in fixed point format using formula below
-	 * (m2_int << 22) | m2_fraction
-	 */
-	{ 162000,	/* m2_int = 32, m2_fraction = 1677722 */
-		{ .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } },
-	{ 270000,	/* m2_int = 27, m2_fraction = 0 */
-		{ .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } },
-};
-
-const struct dpll *vlv_get_dpll(struct drm_i915_private *i915)
-{
-	return IS_CHERRYVIEW(i915) ? &chv_dpll[0].dpll : &vlv_dpll[0].dpll;
-}
 
 /* Constants for DP DSC configurations */
 static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15};
@@ -151,8 +106,6 @@ bool intel_dp_is_edp(struct intel_dp *intel_dp)
 	return dig_port->base.type == INTEL_OUTPUT_EDP;
 }
 
-static void intel_dp_link_down(struct intel_encoder *encoder,
-			       const struct intel_crtc_state *old_crtc_state);
 static void intel_dp_unset_edid(struct intel_dp *intel_dp);
 
 /* update sink rates from dpcd */
@@ -878,39 +831,6 @@ bool intel_dp_source_supports_hbr3(struct intel_dp *intel_dp)
 	return max_rate >= 810000;
 }
 
-static void
-intel_dp_set_clock(struct intel_encoder *encoder,
-		   struct intel_crtc_state *pipe_config)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	const struct dp_link_dpll *divisor = NULL;
-	int i, count = 0;
-
-	if (IS_G4X(dev_priv)) {
-		divisor = g4x_dpll;
-		count = ARRAY_SIZE(g4x_dpll);
-	} else if (HAS_PCH_SPLIT(dev_priv)) {
-		divisor = pch_dpll;
-		count = ARRAY_SIZE(pch_dpll);
-	} else if (IS_CHERRYVIEW(dev_priv)) {
-		divisor = chv_dpll;
-		count = ARRAY_SIZE(chv_dpll);
-	} else if (IS_VALLEYVIEW(dev_priv)) {
-		divisor = vlv_dpll;
-		count = ARRAY_SIZE(vlv_dpll);
-	}
-
-	if (divisor && count) {
-		for (i = 0; i < count; i++) {
-			if (pipe_config->port_clock == divisor[i].clock) {
-				pipe_config->dpll = divisor[i].dpll;
-				pipe_config->clock_set = true;
-				break;
-			}
-		}
-	}
-}
-
 static void snprintf_int_array(char *str, size_t len,
 			       const int *array, int nelem)
 {
@@ -1880,90 +1800,6 @@ void intel_dp_set_link_params(struct intel_dp *intel_dp,
 	intel_dp->lane_count = lane_count;
 }
 
-static void intel_dp_prepare(struct intel_encoder *encoder,
-			     const struct intel_crtc_state *pipe_config)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	enum port port = encoder->port;
-	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
-	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
-
-	intel_dp_set_link_params(intel_dp,
-				 pipe_config->port_clock,
-				 pipe_config->lane_count);
-
-	/*
-	 * There are four kinds of DP registers:
-	 *
-	 * 	IBX PCH
-	 * 	SNB CPU
-	 *	IVB CPU
-	 * 	CPT PCH
-	 *
-	 * IBX PCH and CPU are the same for almost everything,
-	 * except that the CPU DP PLL is configured in this
-	 * register
-	 *
-	 * CPT PCH is quite different, having many bits moved
-	 * to the TRANS_DP_CTL register instead. That
-	 * configuration happens (oddly) in ilk_pch_enable
-	 */
-
-	/* Preserve the BIOS-computed detected bit. This is
-	 * supposed to be read-only.
-	 */
-	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
-
-	/* Handle DP bits in common between all three register formats */
-	intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
-	intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count);
-
-	/* Split out the IBX/CPU vs CPT settings */
-
-	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
-			intel_dp->DP |= DP_SYNC_HS_HIGH;
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
-			intel_dp->DP |= DP_SYNC_VS_HIGH;
-		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-
-		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
-			intel_dp->DP |= DP_ENHANCED_FRAMING;
-
-		intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
-	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
-		u32 trans_dp;
-
-		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-
-		trans_dp = intel_de_read(dev_priv, TRANS_DP_CTL(crtc->pipe));
-		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
-			trans_dp |= TRANS_DP_ENH_FRAMING;
-		else
-			trans_dp &= ~TRANS_DP_ENH_FRAMING;
-		intel_de_write(dev_priv, TRANS_DP_CTL(crtc->pipe), trans_dp);
-	} else {
-		if (IS_G4X(dev_priv) && pipe_config->limited_color_range)
-			intel_dp->DP |= DP_COLOR_RANGE_16_235;
-
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
-			intel_dp->DP |= DP_SYNC_HS_HIGH;
-		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
-			intel_dp->DP |= DP_SYNC_VS_HIGH;
-		intel_dp->DP |= DP_LINK_TRAIN_OFF;
-
-		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
-			intel_dp->DP |= DP_ENHANCED_FRAMING;
-
-		if (IS_CHERRYVIEW(dev_priv))
-			intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
-		else
-			intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
-	}
-}
-
-
 /* Enable backlight PWM and backlight PP control. */
 void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
 			    const struct drm_connector_state *conn_state)
@@ -1995,89 +1831,6 @@ void intel_edp_backlight_off(const struct drm_connector_state *old_conn_state)
 	intel_panel_disable_backlight(old_conn_state);
 }
 
-static void assert_dp_port(struct intel_dp *intel_dp, bool state)
-{
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
-	bool cur_state = intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN;
-
-	I915_STATE_WARN(cur_state != state,
-			"[ENCODER:%d:%s] state assertion failure (expected %s, current %s)\n",
-			dig_port->base.base.base.id, dig_port->base.base.name,
-			onoff(state), onoff(cur_state));
-}
-#define assert_dp_port_disabled(d) assert_dp_port((d), false)
-
-static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
-{
-	bool cur_state = intel_de_read(dev_priv, DP_A) & DP_PLL_ENABLE;
-
-	I915_STATE_WARN(cur_state != state,
-			"eDP PLL state assertion failure (expected %s, current %s)\n",
-			onoff(state), onoff(cur_state));
-}
-#define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
-#define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
-
-static void ilk_edp_pll_on(struct intel_dp *intel_dp,
-			   const struct intel_crtc_state *pipe_config)
-{
-	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
-	assert_pipe_disabled(dev_priv, pipe_config->cpu_transcoder);
-	assert_dp_port_disabled(intel_dp);
-	assert_edp_pll_disabled(dev_priv);
-
-	drm_dbg_kms(&dev_priv->drm, "enabling eDP PLL for clock %d\n",
-		    pipe_config->port_clock);
-
-	intel_dp->DP &= ~DP_PLL_FREQ_MASK;
-
-	if (pipe_config->port_clock == 162000)
-		intel_dp->DP |= DP_PLL_FREQ_162MHZ;
-	else
-		intel_dp->DP |= DP_PLL_FREQ_270MHZ;
-
-	intel_de_write(dev_priv, DP_A, intel_dp->DP);
-	intel_de_posting_read(dev_priv, DP_A);
-	udelay(500);
-
-	/*
-	 * [DevILK] Work around required when enabling DP PLL
-	 * while a pipe is enabled going to FDI:
-	 * 1. Wait for the start of vertical blank on the enabled pipe going to FDI
-	 * 2. Program DP PLL enable
-	 */
-	if (IS_GEN(dev_priv, 5))
-		intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe);
-
-	intel_dp->DP |= DP_PLL_ENABLE;
-
-	intel_de_write(dev_priv, DP_A, intel_dp->DP);
-	intel_de_posting_read(dev_priv, DP_A);
-	udelay(200);
-}
-
-static void ilk_edp_pll_off(struct intel_dp *intel_dp,
-			    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);
-
-	assert_pipe_disabled(dev_priv, old_crtc_state->cpu_transcoder);
-	assert_dp_port_disabled(intel_dp);
-	assert_edp_pll_enabled(dev_priv);
-
-	drm_dbg_kms(&dev_priv->drm, "disabling eDP PLL\n");
-
-	intel_dp->DP &= ~DP_PLL_ENABLE;
-
-	intel_de_write(dev_priv, DP_A, intel_dp->DP);
-	intel_de_posting_read(dev_priv, DP_A);
-	udelay(200);
-}
-
 static bool downstream_hpd_needs_d0(struct intel_dp *intel_dp)
 {
 	/*
@@ -2180,160 +1933,6 @@ void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode)
 			    mode == DP_SET_POWER_D0 ? "D0" : "D3");
 }
 
-static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
-				 enum port port, enum pipe *pipe)
-{
-	enum pipe p;
-
-	for_each_pipe(dev_priv, p) {
-		u32 val = intel_de_read(dev_priv, TRANS_DP_CTL(p));
-
-		if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
-			*pipe = p;
-			return true;
-		}
-	}
-
-	drm_dbg_kms(&dev_priv->drm, "No pipe for DP port %c found\n",
-		    port_name(port));
-
-	/* must initialize pipe to something for the asserts */
-	*pipe = PIPE_A;
-
-	return false;
-}
-
-bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
-			   i915_reg_t dp_reg, enum port port,
-			   enum pipe *pipe)
-{
-	bool ret;
-	u32 val;
-
-	val = intel_de_read(dev_priv, dp_reg);
-
-	ret = val & DP_PORT_EN;
-
-	/* asserts want to know the pipe even if the port is disabled */
-	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
-		*pipe = (val & DP_PIPE_SEL_MASK_IVB) >> DP_PIPE_SEL_SHIFT_IVB;
-	else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
-		ret &= cpt_dp_port_selected(dev_priv, port, pipe);
-	else if (IS_CHERRYVIEW(dev_priv))
-		*pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
-	else
-		*pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
-
-	return ret;
-}
-
-static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
-				  enum pipe *pipe)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	intel_wakeref_t wakeref;
-	bool ret;
-
-	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     encoder->power_domain);
-	if (!wakeref)
-		return false;
-
-	ret = intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
-				    encoder->port, pipe);
-
-	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
-
-	return ret;
-}
-
-static void intel_dp_get_config(struct intel_encoder *encoder,
-				struct intel_crtc_state *pipe_config)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	u32 tmp, flags = 0;
-	enum port port = encoder->port;
-	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
-
-	if (encoder->type == INTEL_OUTPUT_EDP)
-		pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
-	else
-		pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
-
-	tmp = intel_de_read(dev_priv, intel_dp->output_reg);
-
-	pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
-
-	if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
-		u32 trans_dp = intel_de_read(dev_priv,
-					     TRANS_DP_CTL(crtc->pipe));
-
-		if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
-			flags |= DRM_MODE_FLAG_PHSYNC;
-		else
-			flags |= DRM_MODE_FLAG_NHSYNC;
-
-		if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH)
-			flags |= DRM_MODE_FLAG_PVSYNC;
-		else
-			flags |= DRM_MODE_FLAG_NVSYNC;
-	} else {
-		if (tmp & DP_SYNC_HS_HIGH)
-			flags |= DRM_MODE_FLAG_PHSYNC;
-		else
-			flags |= DRM_MODE_FLAG_NHSYNC;
-
-		if (tmp & DP_SYNC_VS_HIGH)
-			flags |= DRM_MODE_FLAG_PVSYNC;
-		else
-			flags |= DRM_MODE_FLAG_NVSYNC;
-	}
-
-	pipe_config->hw.adjusted_mode.flags |= flags;
-
-	if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
-		pipe_config->limited_color_range = true;
-
-	pipe_config->lane_count =
-		((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
-
-	intel_dp_get_m_n(crtc, pipe_config);
-
-	if (port == PORT_A) {
-		if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)
-			pipe_config->port_clock = 162000;
-		else
-			pipe_config->port_clock = 270000;
-	}
-
-	pipe_config->hw.adjusted_mode.crtc_clock =
-		intel_dotclock_calculate(pipe_config->port_clock,
-					 &pipe_config->dp_m_n);
-
-	if (intel_dp_is_edp(intel_dp) && dev_priv->vbt.edp.bpp &&
-	    pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
-		/*
-		 * This is a big fat ugly hack.
-		 *
-		 * Some machines in UEFI boot mode provide us a VBT that has 18
-		 * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
-		 * unknown we fail to light up. Yet the same BIOS boots up with
-		 * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
-		 * max, not what it tells us to use.
-		 *
-		 * Note: This will still be broken if the eDP panel is not lit
-		 * up by the BIOS, and thus we can't get the mode at module
-		 * load.
-		 */
-		drm_dbg_kms(&dev_priv->drm,
-			    "pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
-			    pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
-		dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
-	}
-}
-
 static bool
 intel_dp_get_dpcd(struct intel_dp *intel_dp);
 
@@ -2400,118 +1999,6 @@ bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 	return true;
 }
 
-static void intel_disable_dp(struct intel_atomic_state *state,
-			     struct intel_encoder *encoder,
-			     const struct intel_crtc_state *old_crtc_state,
-			     const struct drm_connector_state *old_conn_state)
-{
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-
-	intel_dp->link_trained = false;
-
-	if (old_crtc_state->has_audio)
-		intel_audio_codec_disable(encoder,
-					  old_crtc_state, old_conn_state);
-
-	/* Make sure the panel is off before trying to change the mode. But also
-	 * ensure that we have vdd while we switch off the panel. */
-	intel_pps_vdd_on(intel_dp);
-	intel_edp_backlight_off(old_conn_state);
-	intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
-	intel_pps_off(intel_dp);
-}
-
-static void g4x_disable_dp(struct intel_atomic_state *state,
-			   struct intel_encoder *encoder,
-			   const struct intel_crtc_state *old_crtc_state,
-			   const struct drm_connector_state *old_conn_state)
-{
-	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
-}
-
-static void vlv_disable_dp(struct intel_atomic_state *state,
-			   struct intel_encoder *encoder,
-			   const struct intel_crtc_state *old_crtc_state,
-			   const struct drm_connector_state *old_conn_state)
-{
-	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
-}
-
-static void g4x_post_disable_dp(struct intel_atomic_state *state,
-				struct intel_encoder *encoder,
-				const struct intel_crtc_state *old_crtc_state,
-				const struct drm_connector_state *old_conn_state)
-{
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	enum port port = encoder->port;
-
-	/*
-	 * Bspec does not list a specific disable sequence for g4x DP.
-	 * Follow the ilk+ sequence (disable pipe before the port) for
-	 * g4x DP as it does not suffer from underruns like the normal
-	 * g4x modeset sequence (disable pipe after the port).
-	 */
-	intel_dp_link_down(encoder, old_crtc_state);
-
-	/* Only ilk+ has port A */
-	if (port == PORT_A)
-		ilk_edp_pll_off(intel_dp, old_crtc_state);
-}
-
-static void vlv_post_disable_dp(struct intel_atomic_state *state,
-				struct intel_encoder *encoder,
-				const struct intel_crtc_state *old_crtc_state,
-				const struct drm_connector_state *old_conn_state)
-{
-	intel_dp_link_down(encoder, old_crtc_state);
-}
-
-static void chv_post_disable_dp(struct intel_atomic_state *state,
-				struct intel_encoder *encoder,
-				const struct intel_crtc_state *old_crtc_state,
-				const struct drm_connector_state *old_conn_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-
-	intel_dp_link_down(encoder, old_crtc_state);
-
-	vlv_dpio_get(dev_priv);
-
-	/* Assert data lane reset */
-	chv_data_lane_soft_reset(encoder, old_crtc_state, true);
-
-	vlv_dpio_put(dev_priv);
-}
-
-static void
-cpt_set_link_train(struct intel_dp *intel_dp,
-		   const struct intel_crtc_state *crtc_state,
-		   u8 dp_train_pat)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	u32 *DP = &intel_dp->DP;
-
-	*DP &= ~DP_LINK_TRAIN_MASK_CPT;
-
-	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
-	case DP_TRAINING_PATTERN_DISABLE:
-		*DP |= DP_LINK_TRAIN_OFF_CPT;
-		break;
-	case DP_TRAINING_PATTERN_1:
-		*DP |= DP_LINK_TRAIN_PAT_1_CPT;
-		break;
-	case DP_TRAINING_PATTERN_2:
-		*DP |= DP_LINK_TRAIN_PAT_2_CPT;
-		break;
-	default:
-		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
-		return;
-	}
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
 static void intel_dp_get_pcon_dsc_cap(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
@@ -2786,59 +2273,6 @@ intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
 		drm_dbg_kms(&i915->drm, "Failed to set pcon DSC\n");
 }
 
-static void
-g4x_set_link_train(struct intel_dp *intel_dp,
-		   const struct intel_crtc_state *crtc_state,
-		   u8 dp_train_pat)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	u32 *DP = &intel_dp->DP;
-
-	*DP &= ~DP_LINK_TRAIN_MASK;
-
-	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
-	case DP_TRAINING_PATTERN_DISABLE:
-		*DP |= DP_LINK_TRAIN_OFF;
-		break;
-	case DP_TRAINING_PATTERN_1:
-		*DP |= DP_LINK_TRAIN_PAT_1;
-		break;
-	case DP_TRAINING_PATTERN_2:
-		*DP |= DP_LINK_TRAIN_PAT_2;
-		break;
-	default:
-		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
-		return;
-	}
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-static void intel_dp_enable_port(struct intel_dp *intel_dp,
-				 const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-
-	/* enable with pattern 1 (as per spec) */
-
-	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
-					       DP_TRAINING_PATTERN_1);
-
-	/*
-	 * Magic for VLV/CHV. We _must_ first set up the register
-	 * without actually enabling the port, and then do another
-	 * write to enable the port. Otherwise link training will
-	 * fail when the power sequencer is freshly used for this port.
-	 */
-	intel_dp->DP |= DP_PORT_EN;
-	if (crtc_state->has_audio)
-		intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
 void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
 					   const struct intel_crtc_state *crtc_state)
 {
@@ -2907,557 +2341,6 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
 			   enableddisabled(tmp ? true : false));
 }
 
-static void intel_enable_dp(struct intel_atomic_state *state,
-			    struct intel_encoder *encoder,
-			    const struct intel_crtc_state *pipe_config,
-			    const struct drm_connector_state *conn_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
-	u32 dp_reg = intel_de_read(dev_priv, intel_dp->output_reg);
-	enum pipe pipe = crtc->pipe;
-	intel_wakeref_t wakeref;
-
-	if (drm_WARN_ON(&dev_priv->drm, dp_reg & DP_PORT_EN))
-		return;
-
-	with_intel_pps_lock(intel_dp, wakeref) {
-		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-			vlv_pps_init(encoder, pipe_config);
-
-		intel_dp_enable_port(intel_dp, pipe_config);
-
-		intel_pps_vdd_on_unlocked(intel_dp);
-		intel_pps_on_unlocked(intel_dp);
-		intel_pps_vdd_off_unlocked(intel_dp, true);
-	}
-
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		unsigned int lane_mask = 0x0;
-
-		if (IS_CHERRYVIEW(dev_priv))
-			lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
-
-		vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
-				    lane_mask);
-	}
-
-	intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
-	intel_dp_configure_protocol_converter(intel_dp, pipe_config);
-	intel_dp_check_frl_training(intel_dp);
-	intel_dp_pcon_dsc_configure(intel_dp, pipe_config);
-	intel_dp_start_link_train(intel_dp, pipe_config);
-	intel_dp_stop_link_train(intel_dp, pipe_config);
-
-	if (pipe_config->has_audio) {
-		drm_dbg(&dev_priv->drm, "Enabling DP audio on pipe %c\n",
-			pipe_name(pipe));
-		intel_audio_codec_enable(encoder, pipe_config, conn_state);
-	}
-}
-
-static void g4x_enable_dp(struct intel_atomic_state *state,
-			  struct intel_encoder *encoder,
-			  const struct intel_crtc_state *pipe_config,
-			  const struct drm_connector_state *conn_state)
-{
-	intel_enable_dp(state, encoder, pipe_config, conn_state);
-	intel_edp_backlight_on(pipe_config, conn_state);
-}
-
-static void vlv_enable_dp(struct intel_atomic_state *state,
-			  struct intel_encoder *encoder,
-			  const struct intel_crtc_state *pipe_config,
-			  const struct drm_connector_state *conn_state)
-{
-	intel_edp_backlight_on(pipe_config, conn_state);
-}
-
-static void g4x_pre_enable_dp(struct intel_atomic_state *state,
-			      struct intel_encoder *encoder,
-			      const struct intel_crtc_state *pipe_config,
-			      const struct drm_connector_state *conn_state)
-{
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	enum port port = encoder->port;
-
-	intel_dp_prepare(encoder, pipe_config);
-
-	/* Only ilk+ has port A */
-	if (port == PORT_A)
-		ilk_edp_pll_on(intel_dp, pipe_config);
-}
-
-static void vlv_pre_enable_dp(struct intel_atomic_state *state,
-			      struct intel_encoder *encoder,
-			      const struct intel_crtc_state *pipe_config,
-			      const struct drm_connector_state *conn_state)
-{
-	vlv_phy_pre_encoder_enable(encoder, pipe_config);
-
-	intel_enable_dp(state, encoder, pipe_config, conn_state);
-}
-
-static void vlv_dp_pre_pll_enable(struct intel_atomic_state *state,
-				  struct intel_encoder *encoder,
-				  const struct intel_crtc_state *pipe_config,
-				  const struct drm_connector_state *conn_state)
-{
-	intel_dp_prepare(encoder, pipe_config);
-
-	vlv_phy_pre_pll_enable(encoder, pipe_config);
-}
-
-static void chv_pre_enable_dp(struct intel_atomic_state *state,
-			      struct intel_encoder *encoder,
-			      const struct intel_crtc_state *pipe_config,
-			      const struct drm_connector_state *conn_state)
-{
-	chv_phy_pre_encoder_enable(encoder, pipe_config);
-
-	intel_enable_dp(state, encoder, pipe_config, conn_state);
-
-	/* Second common lane will stay alive on its own now */
-	chv_phy_release_cl2_override(encoder);
-}
-
-static void chv_dp_pre_pll_enable(struct intel_atomic_state *state,
-				  struct intel_encoder *encoder,
-				  const struct intel_crtc_state *pipe_config,
-				  const struct drm_connector_state *conn_state)
-{
-	intel_dp_prepare(encoder, pipe_config);
-
-	chv_phy_pre_pll_enable(encoder, pipe_config);
-}
-
-static void chv_dp_post_pll_disable(struct intel_atomic_state *state,
-				    struct intel_encoder *encoder,
-				    const struct intel_crtc_state *old_crtc_state,
-				    const struct drm_connector_state *old_conn_state)
-{
-	chv_phy_post_pll_disable(encoder, old_crtc_state);
-}
-
-static u8 intel_dp_voltage_max_2(struct intel_dp *intel_dp,
-				 const struct intel_crtc_state *crtc_state)
-{
-	return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
-}
-
-static u8 intel_dp_voltage_max_3(struct intel_dp *intel_dp,
-				 const struct intel_crtc_state *crtc_state)
-{
-	return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
-}
-
-static u8 intel_dp_preemph_max_2(struct intel_dp *intel_dp)
-{
-	return DP_TRAIN_PRE_EMPH_LEVEL_2;
-}
-
-static u8 intel_dp_preemph_max_3(struct intel_dp *intel_dp)
-{
-	return DP_TRAIN_PRE_EMPH_LEVEL_3;
-}
-
-static void vlv_set_signal_levels(struct intel_dp *intel_dp,
-				  const struct intel_crtc_state *crtc_state)
-{
-	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
-	unsigned long demph_reg_value, preemph_reg_value,
-		uniqtranscale_reg_value;
-	u8 train_set = intel_dp->train_set[0];
-
-	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
-	case DP_TRAIN_PRE_EMPH_LEVEL_0:
-		preemph_reg_value = 0x0004000;
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			demph_reg_value = 0x2B405555;
-			uniqtranscale_reg_value = 0x552AB83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			demph_reg_value = 0x2B404040;
-			uniqtranscale_reg_value = 0x5548B83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
-			demph_reg_value = 0x2B245555;
-			uniqtranscale_reg_value = 0x5560B83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
-			demph_reg_value = 0x2B405555;
-			uniqtranscale_reg_value = 0x5598DA3A;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_1:
-		preemph_reg_value = 0x0002000;
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			demph_reg_value = 0x2B404040;
-			uniqtranscale_reg_value = 0x5552B83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			demph_reg_value = 0x2B404848;
-			uniqtranscale_reg_value = 0x5580B83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
-			demph_reg_value = 0x2B404040;
-			uniqtranscale_reg_value = 0x55ADDA3A;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_2:
-		preemph_reg_value = 0x0000000;
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			demph_reg_value = 0x2B305555;
-			uniqtranscale_reg_value = 0x5570B83A;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			demph_reg_value = 0x2B2B4040;
-			uniqtranscale_reg_value = 0x55ADDA3A;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_3:
-		preemph_reg_value = 0x0006000;
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			demph_reg_value = 0x1B405555;
-			uniqtranscale_reg_value = 0x55ADDA3A;
-			break;
-		default:
-			return;
-		}
-		break;
-	default:
-		return;
-	}
-
-	vlv_set_phy_signal_level(encoder, crtc_state,
-				 demph_reg_value, preemph_reg_value,
-				 uniqtranscale_reg_value, 0);
-}
-
-static void chv_set_signal_levels(struct intel_dp *intel_dp,
-				  const struct intel_crtc_state *crtc_state)
-{
-	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
-	u32 deemph_reg_value, margin_reg_value;
-	bool uniq_trans_scale = false;
-	u8 train_set = intel_dp->train_set[0];
-
-	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
-	case DP_TRAIN_PRE_EMPH_LEVEL_0:
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			deemph_reg_value = 128;
-			margin_reg_value = 52;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			deemph_reg_value = 128;
-			margin_reg_value = 77;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
-			deemph_reg_value = 128;
-			margin_reg_value = 102;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
-			deemph_reg_value = 128;
-			margin_reg_value = 154;
-			uniq_trans_scale = true;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_1:
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			deemph_reg_value = 85;
-			margin_reg_value = 78;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			deemph_reg_value = 85;
-			margin_reg_value = 116;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
-			deemph_reg_value = 85;
-			margin_reg_value = 154;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_2:
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			deemph_reg_value = 64;
-			margin_reg_value = 104;
-			break;
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-			deemph_reg_value = 64;
-			margin_reg_value = 154;
-			break;
-		default:
-			return;
-		}
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_3:
-		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-			deemph_reg_value = 43;
-			margin_reg_value = 154;
-			break;
-		default:
-			return;
-		}
-		break;
-	default:
-		return;
-	}
-
-	chv_set_phy_signal_level(encoder, crtc_state,
-				 deemph_reg_value, margin_reg_value,
-				 uniq_trans_scale);
-}
-
-static u32 g4x_signal_levels(u8 train_set)
-{
-	u32 signal_levels = 0;
-
-	switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
-	default:
-		signal_levels |= DP_VOLTAGE_0_4;
-		break;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
-		signal_levels |= DP_VOLTAGE_0_6;
-		break;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
-		signal_levels |= DP_VOLTAGE_0_8;
-		break;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
-		signal_levels |= DP_VOLTAGE_1_2;
-		break;
-	}
-	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
-	case DP_TRAIN_PRE_EMPH_LEVEL_0:
-	default:
-		signal_levels |= DP_PRE_EMPHASIS_0;
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_1:
-		signal_levels |= DP_PRE_EMPHASIS_3_5;
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_2:
-		signal_levels |= DP_PRE_EMPHASIS_6;
-		break;
-	case DP_TRAIN_PRE_EMPH_LEVEL_3:
-		signal_levels |= DP_PRE_EMPHASIS_9_5;
-		break;
-	}
-	return signal_levels;
-}
-
-static void
-g4x_set_signal_levels(struct intel_dp *intel_dp,
-		      const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	u8 train_set = intel_dp->train_set[0];
-	u32 signal_levels;
-
-	signal_levels = g4x_signal_levels(train_set);
-
-	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
-		    signal_levels);
-
-	intel_dp->DP &= ~(DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK);
-	intel_dp->DP |= signal_levels;
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-/* SNB CPU eDP voltage swing and pre-emphasis control */
-static u32 snb_cpu_edp_signal_levels(u8 train_set)
-{
-	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
-					DP_TRAIN_PRE_EMPHASIS_MASK);
-
-	switch (signal_levels) {
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-		return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-		return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-		return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-		return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B;
-	default:
-		MISSING_CASE(signal_levels);
-		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
-	}
-}
-
-static void
-snb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
-			      const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	u8 train_set = intel_dp->train_set[0];
-	u32 signal_levels;
-
-	signal_levels = snb_cpu_edp_signal_levels(train_set);
-
-	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
-		    signal_levels);
-
-	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
-	intel_dp->DP |= signal_levels;
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-/* IVB CPU eDP voltage swing and pre-emphasis control */
-static u32 ivb_cpu_edp_signal_levels(u8 train_set)
-{
-	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
-					DP_TRAIN_PRE_EMPHASIS_MASK);
-
-	switch (signal_levels) {
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-		return EDP_LINK_TRAIN_400MV_0DB_IVB;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-		return EDP_LINK_TRAIN_400MV_3_5DB_IVB;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-		return EDP_LINK_TRAIN_400MV_6DB_IVB;
-
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-		return EDP_LINK_TRAIN_600MV_0DB_IVB;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-		return EDP_LINK_TRAIN_600MV_3_5DB_IVB;
-
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-		return EDP_LINK_TRAIN_800MV_0DB_IVB;
-	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-		return EDP_LINK_TRAIN_800MV_3_5DB_IVB;
-
-	default:
-		MISSING_CASE(signal_levels);
-		return EDP_LINK_TRAIN_500MV_0DB_IVB;
-	}
-}
-
-static void
-ivb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
-			      const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	u8 train_set = intel_dp->train_set[0];
-	u32 signal_levels;
-
-	signal_levels = ivb_cpu_edp_signal_levels(train_set);
-
-	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
-		    signal_levels);
-
-	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
-	intel_dp->DP |= signal_levels;
-
-	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-static void
-intel_dp_link_down(struct intel_encoder *encoder,
-		   const struct intel_crtc_state *old_crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
-	enum port port = encoder->port;
-	u32 DP = intel_dp->DP;
-
-	if (drm_WARN_ON(&dev_priv->drm,
-			(intel_de_read(dev_priv, intel_dp->output_reg) &
-			 DP_PORT_EN) == 0))
-		return;
-
-	drm_dbg_kms(&dev_priv->drm, "\n");
-
-	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
-	    (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
-		DP &= ~DP_LINK_TRAIN_MASK_CPT;
-		DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
-	} else {
-		DP &= ~DP_LINK_TRAIN_MASK;
-		DP |= DP_LINK_TRAIN_PAT_IDLE;
-	}
-	intel_de_write(dev_priv, intel_dp->output_reg, DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-
-	DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE);
-	intel_de_write(dev_priv, intel_dp->output_reg, DP);
-	intel_de_posting_read(dev_priv, intel_dp->output_reg);
-
-	/*
-	 * HW workaround for IBX, we need to move the port
-	 * to transcoder A after disabling it to allow the
-	 * matching HDMI port to be enabled on transcoder A.
-	 */
-	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
-		/*
-		 * We get CPU/PCH FIFO underruns on the other pipe when
-		 * doing the workaround. Sweep them under the rug.
-		 */
-		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
-		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
-
-		/* always enable with pattern 1 (as per spec) */
-		DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
-		DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
-			DP_LINK_TRAIN_PAT_1;
-		intel_de_write(dev_priv, intel_dp->output_reg, DP);
-		intel_de_posting_read(dev_priv, intel_dp->output_reg);
-
-		DP &= ~DP_PORT_EN;
-		intel_de_write(dev_priv, intel_dp->output_reg, DP);
-		intel_de_posting_read(dev_priv, intel_dp->output_reg);
-
-		intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
-		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
-		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
-	}
-
-	msleep(intel_dp->pps.panel_power_down_delay);
-
-	intel_dp->DP = DP;
-
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		intel_wakeref_t wakeref;
-
-		with_intel_pps_lock(intel_dp, wakeref)
-			intel_dp->pps.active_pipe = INVALID_PIPE;
-	}
-}
 
 bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
 {
@@ -4959,64 +3842,6 @@ void intel_dp_phy_test(struct intel_encoder *encoder)
 		 "Acquiring modeset locks failed with %i\n", ret);
 }
 
-/*
- * If display is now connected check links status,
- * there has been known issues of link loss triggering
- * long pulse.
- *
- * Some sinks (eg. ASUS PB287Q) seem to perform some
- * weird HPD ping pong during modesets. So we can apparently
- * end up with HPD going low during a modeset, and then
- * going back up soon after. And once that happens we must
- * retrain the link to get a picture. That's in case no
- * userspace component reacted to intermittent HPD dip.
- */
-static enum intel_hotplug_state
-intel_dp_hotplug(struct intel_encoder *encoder,
-		 struct intel_connector *connector)
-{
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-	struct drm_modeset_acquire_ctx ctx;
-	enum intel_hotplug_state state;
-	int ret;
-
-	if (intel_dp->compliance.test_active &&
-	    intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
-		intel_dp_phy_test(encoder);
-		/* just do the PHY test and nothing else */
-		return INTEL_HOTPLUG_UNCHANGED;
-	}
-
-	state = intel_encoder_hotplug(encoder, connector);
-
-	drm_modeset_acquire_init(&ctx, 0);
-
-	for (;;) {
-		ret = intel_dp_retrain_link(encoder, &ctx);
-
-		if (ret == -EDEADLK) {
-			drm_modeset_backoff(&ctx);
-			continue;
-		}
-
-		break;
-	}
-
-	drm_modeset_drop_locks(&ctx);
-	drm_modeset_acquire_fini(&ctx);
-	drm_WARN(encoder->base.dev, ret,
-		 "Acquiring modeset locks failed with %i\n", ret);
-
-	/*
-	 * Keeping it consistent with intel_ddi_hotplug() and
-	 * intel_hdmi_hotplug().
-	 */
-	if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
-		state = INTEL_HOTPLUG_RETRY;
-
-	return state;
-}
-
 static void intel_dp_check_device_service_irq(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
@@ -5198,68 +4023,6 @@ edp_detect(struct intel_dp *intel_dp)
 	return connector_status_connected;
 }
 
-static bool ibx_digital_port_connected(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	u32 bit = dev_priv->hotplug.pch_hpd[encoder->hpd_pin];
-
-	return intel_de_read(dev_priv, SDEISR) & bit;
-}
-
-static bool g4x_digital_port_connected(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	u32 bit;
-
-	switch (encoder->hpd_pin) {
-	case HPD_PORT_B:
-		bit = PORTB_HOTPLUG_LIVE_STATUS_G4X;
-		break;
-	case HPD_PORT_C:
-		bit = PORTC_HOTPLUG_LIVE_STATUS_G4X;
-		break;
-	case HPD_PORT_D:
-		bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
-		break;
-	default:
-		MISSING_CASE(encoder->hpd_pin);
-		return false;
-	}
-
-	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
-}
-
-static bool gm45_digital_port_connected(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	u32 bit;
-
-	switch (encoder->hpd_pin) {
-	case HPD_PORT_B:
-		bit = PORTB_HOTPLUG_LIVE_STATUS_GM45;
-		break;
-	case HPD_PORT_C:
-		bit = PORTC_HOTPLUG_LIVE_STATUS_GM45;
-		break;
-	case HPD_PORT_D:
-		bit = PORTD_HOTPLUG_LIVE_STATUS_GM45;
-		break;
-	default:
-		MISSING_CASE(encoder->hpd_pin);
-		return false;
-	}
-
-	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
-}
-
-static bool ilk_digital_port_connected(struct intel_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	u32 bit = dev_priv->hotplug.hpd[encoder->hpd_pin];
-
-	return intel_de_read(dev_priv, DEISR) & bit;
-}
-
 /*
  * intel_digital_port_connected - is the specified port connected?
  * @encoder: intel_encoder
@@ -5701,14 +4464,6 @@ void intel_dp_encoder_flush_work(struct drm_encoder *encoder)
 	intel_dp_aux_fini(intel_dp);
 }
 
-static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
-{
-	intel_dp_encoder_flush_work(encoder);
-
-	drm_encoder_cleanup(encoder);
-	kfree(enc_to_dig_port(to_intel_encoder(encoder)));
-}
-
 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
@@ -5723,38 +4478,6 @@ void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder)
 	intel_pps_wait_power_cycle(intel_dp);
 }
 
-static enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
-{
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
-	enum pipe pipe;
-
-	if (intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
-				  encoder->port, &pipe))
-		return pipe;
-
-	return INVALID_PIPE;
-}
-
-static void intel_dp_encoder_reset(struct drm_encoder *encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
-
-	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
-
-	intel_dp->reset_link_params = true;
-
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-		intel_wakeref_t wakeref;
-
-		with_intel_pps_lock(intel_dp, wakeref)
-			intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
-	}
-
-	intel_pps_encoder_reset(intel_dp);
-}
-
 static int intel_modeset_tile_group(struct intel_atomic_state *state,
 				    int tile_group_id)
 {
@@ -5912,11 +4635,6 @@ static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs =
 	.atomic_check = intel_dp_connector_atomic_check,
 };
 
-static const struct drm_encoder_funcs intel_dp_enc_funcs = {
-	.reset = intel_dp_encoder_reset,
-	.destroy = intel_dp_encoder_destroy,
-};
-
 enum irqreturn
 intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd)
 {
@@ -6705,137 +5423,6 @@ fail:
 	return false;
 }
 
-bool intel_dp_init(struct drm_i915_private *dev_priv,
-		   i915_reg_t output_reg,
-		   enum port port)
-{
-	struct intel_digital_port *dig_port;
-	struct intel_encoder *intel_encoder;
-	struct drm_encoder *encoder;
-	struct intel_connector *intel_connector;
-
-	dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
-	if (!dig_port)
-		return false;
-
-	intel_connector = intel_connector_alloc();
-	if (!intel_connector)
-		goto err_connector_alloc;
-
-	intel_encoder = &dig_port->base;
-	encoder = &intel_encoder->base;
-
-	mutex_init(&dig_port->hdcp_mutex);
-
-	if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
-			     &intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
-			     "DP %c", port_name(port)))
-		goto err_encoder_init;
-
-	intel_encoder->hotplug = intel_dp_hotplug;
-	intel_encoder->compute_config = intel_dp_compute_config;
-	intel_encoder->get_hw_state = intel_dp_get_hw_state;
-	intel_encoder->get_config = intel_dp_get_config;
-	intel_encoder->sync_state = intel_dp_sync_state;
-	intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
-	intel_encoder->update_pipe = intel_panel_update_backlight;
-	intel_encoder->suspend = intel_dp_encoder_suspend;
-	intel_encoder->shutdown = intel_dp_encoder_shutdown;
-	if (IS_CHERRYVIEW(dev_priv)) {
-		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
-		intel_encoder->pre_enable = chv_pre_enable_dp;
-		intel_encoder->enable = vlv_enable_dp;
-		intel_encoder->disable = vlv_disable_dp;
-		intel_encoder->post_disable = chv_post_disable_dp;
-		intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
-	} else if (IS_VALLEYVIEW(dev_priv)) {
-		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
-		intel_encoder->pre_enable = vlv_pre_enable_dp;
-		intel_encoder->enable = vlv_enable_dp;
-		intel_encoder->disable = vlv_disable_dp;
-		intel_encoder->post_disable = vlv_post_disable_dp;
-	} else {
-		intel_encoder->pre_enable = g4x_pre_enable_dp;
-		intel_encoder->enable = g4x_enable_dp;
-		intel_encoder->disable = g4x_disable_dp;
-		intel_encoder->post_disable = g4x_post_disable_dp;
-	}
-
-	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
-	    (HAS_PCH_CPT(dev_priv) && port != PORT_A))
-		dig_port->dp.set_link_train = cpt_set_link_train;
-	else
-		dig_port->dp.set_link_train = g4x_set_link_train;
-
-	if (IS_CHERRYVIEW(dev_priv))
-		dig_port->dp.set_signal_levels = chv_set_signal_levels;
-	else if (IS_VALLEYVIEW(dev_priv))
-		dig_port->dp.set_signal_levels = vlv_set_signal_levels;
-	else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
-		dig_port->dp.set_signal_levels = ivb_cpu_edp_set_signal_levels;
-	else if (IS_GEN(dev_priv, 6) && port == PORT_A)
-		dig_port->dp.set_signal_levels = snb_cpu_edp_set_signal_levels;
-	else
-		dig_port->dp.set_signal_levels = g4x_set_signal_levels;
-
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv) ||
-	    (HAS_PCH_SPLIT(dev_priv) && port != PORT_A)) {
-		dig_port->dp.preemph_max = intel_dp_preemph_max_3;
-		dig_port->dp.voltage_max = intel_dp_voltage_max_3;
-	} else {
-		dig_port->dp.preemph_max = intel_dp_preemph_max_2;
-		dig_port->dp.voltage_max = intel_dp_voltage_max_2;
-	}
-
-	dig_port->dp.output_reg = output_reg;
-	dig_port->max_lanes = 4;
-
-	intel_encoder->type = INTEL_OUTPUT_DP;
-	intel_encoder->power_domain = intel_port_to_power_domain(port);
-	if (IS_CHERRYVIEW(dev_priv)) {
-		if (port == PORT_D)
-			intel_encoder->pipe_mask = BIT(PIPE_C);
-		else
-			intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
-	} else {
-		intel_encoder->pipe_mask = ~0;
-	}
-	intel_encoder->cloneable = 0;
-	intel_encoder->port = port;
-	intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
-
-	dig_port->hpd_pulse = intel_dp_hpd_pulse;
-
-	if (HAS_GMCH(dev_priv)) {
-		if (IS_GM45(dev_priv))
-			dig_port->connected = gm45_digital_port_connected;
-		else
-			dig_port->connected = g4x_digital_port_connected;
-	} else {
-		if (port == PORT_A)
-			dig_port->connected = ilk_digital_port_connected;
-		else
-			dig_port->connected = ibx_digital_port_connected;
-	}
-
-	if (port != PORT_A)
-		intel_infoframe_init(dig_port);
-
-	dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
-	if (!intel_dp_init_connector(dig_port, intel_connector))
-		goto err_init_connector;
-
-	return true;
-
-err_init_connector:
-	drm_encoder_cleanup(encoder);
-err_encoder_init:
-	kfree(intel_connector);
-err_connector_alloc:
-	kfree(dig_port);
-	return false;
-}
-
 void intel_dp_mst_suspend(struct drm_i915_private *dev_priv)
 {
 	struct intel_encoder *encoder;
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index e4a71c19bd51..8db5062f6c4a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -37,11 +37,6 @@ void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
 bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
 				  const struct drm_connector_state *conn_state);
 int intel_dp_min_bpp(enum intel_output_format output_format);
-bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
-			   i915_reg_t dp_reg, enum port port,
-			   enum pipe *pipe);
-bool intel_dp_init(struct drm_i915_private *dev_priv, i915_reg_t output_reg,
-		   enum port port);
 bool intel_dp_init_connector(struct intel_digital_port *dig_port,
 			     struct intel_connector *intel_connector);
 void intel_dp_set_link_params(struct intel_dp *intel_dp,
@@ -131,7 +126,6 @@ bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 				    struct intel_crtc_state *crtc_state);
 void intel_dp_sync_state(struct intel_encoder *encoder,
 			 const struct intel_crtc_state *crtc_state);
-const struct dpll *vlv_get_dpll(struct drm_i915_private *i915);
 
 void intel_dp_check_frl_training(struct intel_dp *intel_dp);
 void intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index f20ba71f4307..932f56951914 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -3,6 +3,7 @@
  * Copyright © 2020 Intel Corporation
  */
 
+#include "g4x_dp.h"
 #include "i915_drv.h"
 #include "intel_display_types.h"
 #include "intel_dp.h"