WebSVN – Kolibri OS – Diff – /drivers/video/drm/i915/intel_dp.c

 		{ .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } },
 	{ DP_LINK_BW_2_7,
 		{ .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
+	 */
+	{ DP_LINK_BW_1_62,	/* m2_int = 32, m2_fraction = 1677722 */
+		{ .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } },
+	{ DP_LINK_BW_2_7,	/* m2_int = 27, m2_fraction = 0 */
+		{ .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } },
+	{ DP_LINK_BW_5_4,	/* m2_int = 27, m2_fraction = 0 */
+		{ .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }
+};
 /**
  * is_edp - is the given port attached to an eDP panel (either CPU or PCH)
  * @intel_dp: DP struct
+ *
+{
 	return enc_to_intel_dp(&intel_attached_encoder(connector)->base);
+}
+static void intel_dp_link_down(struct intel_dp *intel_dp);
+static bool _edp_panel_vdd_on(struct intel_dp *intel_dp);
-static void intel_dp_link_down(struct intel_dp *intel_dp);
+static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
-static int
+int
 intel_dp_max_link_bw(struct intel_dp *intel_dp)
+{
 	int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE];
-	int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE];
+	struct drm_device *dev = intel_dp->attached_connector->base.dev;
 	switch (max_link_bw) {
 	case DP_LINK_BW_1_62:
+	case DP_LINK_BW_2_7:
+		break;
+	case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */
+		if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) ||
+		     INTEL_INFO(dev)->gen >= 8) &&
-	case DP_LINK_BW_2_7:
+		    intel_dp->dpcd[DP_DPCD_REV] >= 0x12)
-		break;
+			max_link_bw = DP_LINK_BW_5_4;
-	case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */
+		else
-		max_link_bw = DP_LINK_BW_2_7;
+			max_link_bw = DP_LINK_BW_2_7;
 		break;
 		break;
+	}
 	return max_link_bw;
+}
+static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	u8 source_max, sink_max;
+	source_max = 4;
+	if (HAS_DDI(dev) && intel_dig_port->port == PORT_A &&
+	    (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0)
+		source_max = 2;
+	sink_max = drm_dp_max_lane_count(intel_dp->dpcd);
+	return min(source_max, sink_max);
+}
 /*
  * The units on the numbers in the next two are... bizarre.  Examples will
  * make it clearer; this one parallels an example in the eDP spec.
+ *
 		target_clock = fixed_mode->clock;
+	}
 	max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp));
-	max_lanes = drm_dp_max_lane_count(intel_dp->dpcd);
+	max_lanes = intel_dp_max_lane_count(intel_dp);
 		return PCH_PP_STATUS;
 	else
 		return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp));
+}
-static bool ironlake_edp_have_panel_power(struct intel_dp *intel_dp)
+static bool edp_have_panel_power(struct intel_dp *intel_dp)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0;
+}
-static bool ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp)
+static bool edp_have_panel_vdd(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
-{
+	enum intel_display_power_domain power_domain;
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	power_domain = intel_display_port_power_domain(intel_encoder);
 	return intel_display_power_enabled(dev_priv, power_domain) &&
-	return (I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0;
+	       (I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	if (!is_edp(intel_dp))
 		return;
-	if (!ironlake_edp_have_panel_power(intel_dp) && !ironlake_edp_have_panel_vdd(intel_dp)) {
+	if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) {
 		WARN(1, "eDP powered off while attempting aux channel communication.\n");
 		DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n",
 			      I915_READ(_pp_stat_reg(intel_dp)),
 #undef C
 	return status;
 }
 static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp,
-				      int index)
+static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	/* The clock divider is based off the hrawclk,
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	 * and would like to run at 2MHz. So, take the
+	struct drm_device *dev = intel_dig_port->base.base.dev;
-	 * hrawclk value and divide by 2 and use that
 	/*
-	 * Note that PCH attached eDP panels should use a 125MHz input
+	 * The clock divider is based off the hrawclk, and would like to run at
+	 * 2MHz.  So, take the hrawclk value and divide by 2 and use that
+	 */
+	return index ? 0 : intel_hrawclk(dev) / 2;
+}
-	 * clock divider.
-	 */
+static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
-	if (IS_VALLEYVIEW(dev)) {
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-		return index ? 0 : 100;
+	struct drm_device *dev = intel_dig_port->base.base.dev;
-	} else if (intel_dig_port->port == PORT_A) {
-		if (index)
+	if (index)
-			return 0;
+		return 0;
 		if (HAS_DDI(dev))
-			return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000);
+	if (intel_dig_port->port == PORT_A) {
-		else if (IS_GEN6(dev) || IS_GEN7(dev))
+		if (IS_GEN6(dev) || IS_GEN7(dev))
+			return 200; /* SNB & IVB eDP input clock at 400Mhz */
+		else
+			return 225; /* eDP input clock at 450Mhz */
+	} else {
+		return DIV_ROUND_UP(intel_pch_rawclk(dev), 2);
+	}
+}
+static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	if (intel_dig_port->port == PORT_A) {
-			return 200; /* SNB & IVB eDP input clock at 400Mhz */
+		if (index)
-		else
+			return 0;
-			return 225; /* eDP input clock at 450Mhz */
+		return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000);
 	} else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
 		/* Workaround for non-ULT HSW */
 		switch (index) {
 		case 0: return 63;
-		case 1: return 72;
-		default: return 0;
 		case 1: return 72;
-	} else if (HAS_PCH_SPLIT(dev)) {
+		default: return 0;
 		return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2);
-	} else {
+	} else  {
+		return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2);
+	}
+}
+static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	return index ? 0 : 100;
+}
+static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp,
+				      bool has_aux_irq,
+				      int send_bytes,
+				      uint32_t aux_clock_divider)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	uint32_t precharge, timeout;
+	if (IS_GEN6(dev))
+		precharge = 3;
+	else
+		precharge = 5;
+	if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL)
+		timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
+	else
+		timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
+	return DP_AUX_CH_CTL_SEND_BUSY |
+	       DP_AUX_CH_CTL_DONE |
+	       (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) |
+	       DP_AUX_CH_CTL_TIME_OUT_ERROR |
+	       timeout |
+	       DP_AUX_CH_CTL_RECEIVE_ERROR |
+	       (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
-		return index ? 0 :intel_hrawclk(dev) / 2;
+	       (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
 	       (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT);
+}
 static int
 	uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg;
 	uint32_t ch_data = ch_ctl + 4;
 	uint32_t aux_clock_divider;
 	int i, ret, recv_bytes;
 	uint32_t status;
-	int try, precharge, clock = 0;
+	int try, clock = 0;
-	bool has_aux_irq = true;
+	bool has_aux_irq = HAS_AUX_IRQ(dev);
-	uint32_t timeout;
+	bool vdd;
+	vdd = _edp_panel_vdd_on(intel_dp);
 	/* dp aux is extremely sensitive to irq latency, hence request the
 	 * lowest possible wakeup latency and so prevent the cpu from going into
 	 * deep sleep states.
-	 */
-//	pm_qos_update_request(&dev_priv->pm_qos, 0);
+	 */
-	intel_dp_check_edp(intel_dp);
-	if (IS_GEN6(dev))
-		precharge = 3;
-	else
-		precharge = 5;
-	if (IS_BROADWELL(dev) && ch_ctl == DPA_AUX_CH_CTL)
-		timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
 	else
-		timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
+	intel_dp_check_edp(intel_dp);
 	intel_aux_display_runtime_get(dev_priv);
 	if (WARN_ON(send_bytes > 20 || recv_size > 20)) {
 		ret = -E2BIG;
 		goto out;
+	}
+	while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) {
+		u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp,
+							  has_aux_irq,
+							  send_bytes,
+							  aux_clock_divider);
 	while ((aux_clock_divider = get_aux_clock_divider(intel_dp, clock++))) {
 	/* Must try at least 3 times according to DP spec */
 	for (try = 0; try < 5; try++) {
 		/* Load the send data into the aux channel data registers */
 		for (i = 0; i < send_bytes; i += 4)
 			I915_WRITE(ch_data + i,
 				   pack_aux(send + i, send_bytes - i));
-		/* Send the command and wait for it to complete */
-		I915_WRITE(ch_ctl,
-			   DP_AUX_CH_CTL_SEND_BUSY |
-			   (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) |
-				   timeout |
-			   (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
-			   (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
-			   (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) |
-			   DP_AUX_CH_CTL_DONE |
-			   DP_AUX_CH_CTL_TIME_OUT_ERROR |
+		/* Send the command and wait for it to complete */
-			   DP_AUX_CH_CTL_RECEIVE_ERROR);
+			I915_WRITE(ch_ctl, send_ctl);
 	ret = recv_bytes;
 out:
 //	pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE);
 	intel_aux_display_runtime_put(dev_priv);
+	if (vdd)
+		edp_panel_vdd_off(intel_dp, false);
 	return ret;
+}
-}
+#define BARE_ADDRESS_SIZE	3
-/* Write data to the aux channel in native mode */
+#define HEADER_SIZE		(BARE_ADDRESS_SIZE + 1)
-static int
-intel_dp_aux_native_write(struct intel_dp *intel_dp,
+static ssize_t
+intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+{
+	struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux);
-			  uint16_t address, uint8_t *send, int send_bytes)
+	uint8_t txbuf[20], rxbuf[20];
-{
-	int ret;
-	uint8_t	msg[20];
+	size_t txsize, rxsize;
+	int ret;
+	txbuf[0] = msg->request << 4;
+	txbuf[1] = msg->address >> 8;
+	txbuf[2] = msg->address & 0xff;
+	txbuf[3] = msg->size - 1;
+	switch (msg->request & ~DP_AUX_I2C_MOT) {
+	case DP_AUX_NATIVE_WRITE:
+	case DP_AUX_I2C_WRITE:
-	int msg_bytes;
+		txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE;
-	uint8_t	ack;
+		rxsize = 1;
-	if (WARN_ON(send_bytes > 16))
-		return -E2BIG;
-	intel_dp_check_edp(intel_dp);
-	msg[0] = DP_AUX_NATIVE_WRITE << 4;
-	msg[1] = address >> 8;
-	msg[2] = address & 0xff;
-	msg[3] = send_bytes - 1;
-	memcpy(&msg[4], send, send_bytes);
-	msg_bytes = send_bytes + 4;
-	for (;;) {
-		ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1);
-		if (ret < 0)
-			return ret;
-		ack >>= 4;
-		if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)
-			break;
-		else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
-			udelay(100);
-		else
-			return -EIO;
+		if (WARN_ON(txsize > 20))
-	}
+		return -E2BIG;
-	return send_bytes;
-}
+		memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size);
-/* Write a single byte to the aux channel in native mode */
+		ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize);
-static int
+		if (ret > 0) {
+			msg->reply = rxbuf[0] >> 4;
-intel_dp_aux_native_write_1(struct intel_dp *intel_dp,
-			    uint16_t address, uint8_t byte)
+			/* Return payload size. */
-{
-	return intel_dp_aux_native_write(intel_dp, address, &byte, 1);
+			ret = msg->size;
-}
-/* read bytes from a native aux channel */
+		}
-static int
-intel_dp_aux_native_read(struct intel_dp *intel_dp,
-			 uint16_t address, uint8_t *recv, int recv_bytes)
-{
-	uint8_t msg[4];
+			break;
 	int msg_bytes;
-	uint8_t reply[20];
+	case DP_AUX_NATIVE_READ:
-	int reply_bytes;
+	case DP_AUX_I2C_READ:
-	uint8_t ack;
+		txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE;
+		rxsize = msg->size + 1;
+		if (WARN_ON(rxsize > 20))
+		return -E2BIG;
-	int ret;
+		ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize);
+		if (ret > 0) {
+			msg->reply = rxbuf[0] >> 4;
+			/*
+			 * Assume happy day, and copy the data. The caller is
-	if (WARN_ON(recv_bytes > 19))
+			 * expected to check msg->reply before touching it.
-		return -E2BIG;
+			 *
+			 * Return payload size.
+			 */
-	intel_dp_check_edp(intel_dp);
-	msg[0] = DP_AUX_NATIVE_READ << 4;
-	msg[1] = address >> 8;
-	msg[2] = address & 0xff;
-	msg[3] = recv_bytes - 1;
 			ret--;
-	msg_bytes = 4;
-	reply_bytes = recv_bytes + 1;
-	for (;;) {
-		ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes,
-				      reply, reply_bytes);
-		if (ret == 0)
-			return -EPROTO;
-		if (ret < 0)
-			return ret;
-		ack = reply[0] >> 4;
+			memcpy(msg->buffer, rxbuf + 1, ret);
-		if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK) {
+		}
-			memcpy(recv, reply + 1, ret - 1);
+		break;
-			return ret - 1;
-		else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
+	default:
-			udelay(100);
+		ret = -EINVAL;
-		else
-			return -EIO;
-	}
+		break;
-}
+	}
-static int
-intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
-		    uint8_t write_byte, uint8_t *read_byte)
-	struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
-	struct intel_dp *intel_dp = container_of(adapter,
-						struct intel_dp,
-						adapter);
-	uint16_t address = algo_data->address;
-	uint8_t msg[5];
-	uint8_t reply[2];
-	unsigned retry;
-	int msg_bytes;
-	int reply_bytes;
-	int ret;
-	ironlake_edp_panel_vdd_on(intel_dp);
-	intel_dp_check_edp(intel_dp);
-	/* Set up the command byte */
+			return ret;
-	if (mode & MODE_I2C_READ)
+}
-		msg[0] = DP_AUX_I2C_READ << 4;
-	else
-		msg[0] = DP_AUX_I2C_WRITE << 4;
+static void
-	if (!(mode & MODE_I2C_STOP))
+intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector)
-		msg[0] |= DP_AUX_I2C_MOT << 4;
+{
-	msg[1] = address >> 8;
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	msg[2] = address;
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->port;
-	switch (mode) {
+	const char *name = NULL;
-	case MODE_I2C_WRITE:
+	int ret;
-		msg[3] = 0;
-		msg[4] = write_byte;
+	switch (port) {
-		msg_bytes = 5;
-		reply_bytes = 1;
-		break;
-	case MODE_I2C_READ:
-		msg[3] = 0;
-		msg_bytes = 4;
-		reply_bytes = 2;
-		break;
-	default:
-		msg_bytes = 3;
-		reply_bytes = 1;
-		break;
+	case PORT_A:
-	}
+		intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL;
+		name = "DPDDC-A";
-	/*
-	 * DP1.2 sections 2.7.7.1.5.6.1 and 2.7.7.1.6.6.1: A DP Source device is
-	 * required to retry at least seven times upon receiving AUX_DEFER
-	 * before giving up the AUX transaction.
-	 */
-	for (retry = 0; retry < 7; retry++) {
-		ret = intel_dp_aux_ch(intel_dp,
-				      msg, msg_bytes,
+		break;
-				      reply, reply_bytes);
-		if (ret < 0) {
-			DRM_DEBUG_KMS("aux_ch failed %d\n", ret);
-			goto out;
-		}
-		switch ((reply[0] >> 4) & DP_AUX_NATIVE_REPLY_MASK) {
-		case DP_AUX_NATIVE_REPLY_ACK:
-			/* I2C-over-AUX Reply field is only valid
-			 * when paired with AUX ACK.
-			 */
-			break;
-		case DP_AUX_NATIVE_REPLY_NACK:
-			DRM_DEBUG_KMS("aux_ch native nack\n");
-			ret = -EREMOTEIO;
+	case PORT_B:
-			goto out;
-		case DP_AUX_NATIVE_REPLY_DEFER:
-			/*
-			 * For now, just give more slack to branch devices. We
+		intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL;
-			 * could check the DPCD for I2C bit rate capabilities,
+		name = "DPDDC-B";
-			 * and if available, adjust the interval. We could also
-			 * be more careful with DP-to-Legacy adapters where a
-			 * long legacy cable may force very low I2C bit rates.
-			 */
-            udelay(400);
-			continue;
-		default:
-			DRM_ERROR("aux_ch invalid native reply 0x%02x\n",
-				  reply[0]);
-			ret = -EREMOTEIO;
-			goto out;
-		}
-		switch ((reply[0] >> 4) & DP_AUX_I2C_REPLY_MASK) {
+		break;
-		case DP_AUX_I2C_REPLY_ACK:
-			if (mode == MODE_I2C_READ) {
-				*read_byte = reply[1];
+	case PORT_C:
-			}
-			ret = reply_bytes - 1;
-			goto out;
-		case DP_AUX_I2C_REPLY_NACK:
-			DRM_DEBUG_KMS("aux_i2c nack\n");
+		intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL;
-			ret = -EREMOTEIO;
+		name = "DPDDC-C";
+		break;
-			goto out;
+	case PORT_D:
-		case DP_AUX_I2C_REPLY_DEFER:
+		intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL;
+		name = "DPDDC-D";
+		break;
+	default:
-			DRM_DEBUG_KMS("aux_i2c defer\n");
+		BUG();
+	}
 			udelay(100);
-			break;
+	if (!HAS_DDI(dev))
-		default:
+		intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10;
-			DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]);
 			ret = -EREMOTEIO;
-			goto out;
+	intel_dp->aux.name = name;
-		}
-	}
-	DRM_ERROR("too many retries, giving up\n");
+	intel_dp->aux.dev = dev->dev;
-	ret = -EREMOTEIO;
+	intel_dp->aux.transfer = intel_dp_aux_transfer;
-out:
-	ironlake_edp_panel_vdd_off(intel_dp, false);
-	return ret;
-}
-static int
+	ret = drm_dp_aux_register(&intel_dp->aux);
+		if (ret < 0) {
+		DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n",
-intel_dp_i2c_init(struct intel_dp *intel_dp,
+			  name, ret);
+		return;
+	}
+}
+static void
+intel_dp_connector_unregister(struct intel_connector *intel_connector)
-		  struct intel_connector *intel_connector, const char *name)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base);
-	int	ret;
+	intel_connector_unregister(intel_connector);
+}
 	DRM_DEBUG_KMS("i2c_init %s\n", name);
 	int i, count = 0;
 	if (IS_G4X(dev)) {
 		divisor = gen4_dpll;
-		count = ARRAY_SIZE(gen4_dpll);
-	} else if (IS_HASWELL(dev)) {
-		/* Haswell has special-purpose DP DDI clocks. */
+		count = ARRAY_SIZE(gen4_dpll);
 	} else if (HAS_PCH_SPLIT(dev)) {
 		divisor = pch_dpll;
+		count = ARRAY_SIZE(pch_dpll);
+	} else if (IS_CHERRYVIEW(dev)) {
+		divisor = chv_dpll;
-		count = ARRAY_SIZE(pch_dpll);
+		count = ARRAY_SIZE(chv_dpll);
 	} else if (IS_VALLEYVIEW(dev)) {
 		divisor = vlv_dpll;
 		count = ARRAY_SIZE(vlv_dpll);
+			}
+		}
+	}
+}
+static void
+intel_dp_set_m2_n2(struct intel_crtc *crtc, struct intel_link_m_n *m_n)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum transcoder transcoder = crtc->config.cpu_transcoder;
+	I915_WRITE(PIPE_DATA_M2(transcoder),
+		TU_SIZE(m_n->tu) | m_n->gmch_m);
+	I915_WRITE(PIPE_DATA_N2(transcoder), m_n->gmch_n);
+	I915_WRITE(PIPE_LINK_M2(transcoder), m_n->link_m);
+	I915_WRITE(PIPE_LINK_N2(transcoder), m_n->link_n);
+}
 bool
 intel_dp_compute_config(struct intel_encoder *encoder,
 			struct intel_crtc_config *pipe_config)
+{
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	enum port port = dp_to_dig_port(intel_dp)->port;
 	struct intel_crtc *intel_crtc = encoder->new_crtc;
 	struct intel_connector *intel_connector = intel_dp->attached_connector;
 	int lane_count, clock;
+	int min_lane_count = 1;
-	int max_lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
+	int max_lane_count = intel_dp_max_lane_count(intel_dp);
+	/* Conveniently, the link BW constants become indices with a shift...*/
+	int min_clock = 0;
-	int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0;
+	int max_clock = intel_dp_max_link_bw(intel_dp) >> 3;
 	int bpp, mode_rate;
-	static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 };
+	static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 };
 	int link_avail, link_clock;
 	if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A)
 		pipe_config->has_pch_encoder = true;
 	pipe_config->has_dp_encoder = true;
-	pipe_config->has_dp_encoder = true;
+	pipe_config->has_audio = intel_dp->has_audio;
 	if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) {
 		      adjusted_mode->crtc_clock);
 	/* Walk through all bpp values. Luckily they're all nicely spaced with 2
 	 * bpc in between. */
 	bpp = pipe_config->pipe_bpp;
-	if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp &&
+	if (is_edp(intel_dp)) {
-	    dev_priv->vbt.edp_bpp < bpp) {
+		if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) {
 		DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n",
 			      dev_priv->vbt.edp_bpp);
 		bpp = dev_priv->vbt.edp_bpp;
+	}
+		if (IS_BROADWELL(dev)) {
+			/* Yes, it's an ugly hack. */
+			min_lane_count = max_lane_count;
+			DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n",
+				      min_lane_count);
+		} else if (dev_priv->vbt.edp_lanes) {
+			min_lane_count = min(dev_priv->vbt.edp_lanes,
+					     max_lane_count);
+			DRM_DEBUG_KMS("using min %u lanes per VBT\n",
+				      min_lane_count);
+		}
+		if (dev_priv->vbt.edp_rate) {
+			min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock);
+			DRM_DEBUG_KMS("using min %02x link bw per VBT\n",
+				      bws[min_clock]);
+		}
+	}
 	for (; bpp >= 6*3; bpp -= 2*3) {
 		mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock,
 						   bpp);
-		for (clock = 0; clock <= max_clock; clock++) {
+		for (clock = min_clock; clock <= max_clock; clock++) {
-			for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) {
+		for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) {
 				link_clock = drm_dp_bw_code_to_link_rate(bws[clock]);
 	intel_link_compute_m_n(bpp, lane_count,
 			       adjusted_mode->crtc_clock,
 			       pipe_config->port_clock,
 			       &pipe_config->dp_m_n);
+	if (intel_connector->panel.downclock_mode != NULL &&
+		intel_dp->drrs_state.type == SEAMLESS_DRRS_SUPPORT) {
+			intel_link_compute_m_n(bpp, lane_count,
+				intel_connector->panel.downclock_mode->clock,
+				pipe_config->port_clock,
+				&pipe_config->dp_m2_n2);
+	}
+	if (HAS_DDI(dev))
+		hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw);
 	else
 	intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw);
 	POSTING_READ(DP_A);
 	udelay(500);
 }
-static void intel_dp_mode_set(struct intel_encoder *encoder)
+static void intel_dp_prepare(struct intel_encoder *encoder)
+{
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	/* 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(intel_dp->lane_count);
-	if (intel_dp->has_audio) {
+	if (crtc->config.has_audio) {
 		DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
 				 pipe_name(crtc->pipe));
 		intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
 		intel_dp->DP |= DP_LINK_TRAIN_OFF;
 		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+		intel_dp->DP |= DP_ENHANCED_FRAMING;
 		intel_dp->DP |= DP_ENHANCED_FRAMING;
 		if (!IS_CHERRYVIEW(dev)) {
 		if (crtc->pipe == 1)
+		intel_dp->DP |= DP_PIPEB_SELECT;
+	} else {
+			intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe);
 		intel_dp->DP |= DP_PIPEB_SELECT;
 	} else {
-		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-	}
-	if (port == PORT_A && !IS_VALLEYVIEW(dev))
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-		ironlake_set_pll_cpu_edp(intel_dp);
+	}
 }
-#define IDLE_ON_MASK		(PP_ON | 0 	  | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
+#define IDLE_ON_MASK		(PP_ON | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
-#define IDLE_ON_VALUE   	(PP_ON | 0 	  | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_ON_IDLE)
+#define IDLE_ON_VALUE   	(PP_ON | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_ON_IDLE)
-#define IDLE_OFF_MASK		(PP_ON | 0        | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
+#define IDLE_OFF_MASK		(PP_ON | PP_SEQUENCE_MASK | 0                     | 0)
-#define IDLE_OFF_VALUE		(0     | 0        | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+#define IDLE_OFF_VALUE		(0     | PP_SEQUENCE_NONE | 0                     | 0)
-#define IDLE_CYCLE_MASK		(PP_ON | 0        | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK)
+#define IDLE_CYCLE_MASK		(PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK)
-#define IDLE_CYCLE_VALUE	(0     | 0        | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+#define IDLE_CYCLE_VALUE	(0     | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+	}
 	DRM_DEBUG_KMS("Wait complete\n");
 }
-static void ironlake_wait_panel_on(struct intel_dp *intel_dp)
+static void wait_panel_on(struct intel_dp *intel_dp)
 {
 	DRM_DEBUG_KMS("Wait for panel power on\n");
-	ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE);
+	wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE);
+}
-static void ironlake_wait_panel_off(struct intel_dp *intel_dp)
+static void wait_panel_off(struct intel_dp *intel_dp)
+{
 	DRM_DEBUG_KMS("Wait for panel power off time\n");
-	ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE);
+	wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE);
+}
+static void wait_panel_power_cycle(struct intel_dp *intel_dp)
+{
+	DRM_DEBUG_KMS("Wait for panel power cycle\n");
+	/* When we disable the VDD override bit last we have to do the manual
+	 * wait. */
-static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp)
+	wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle,
+				       intel_dp->panel_power_cycle_delay);
+	wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE);
+}
+static void wait_backlight_on(struct intel_dp *intel_dp)
+{
+	wait_remaining_ms_from_jiffies(intel_dp->last_power_on,
+				       intel_dp->backlight_on_delay);
+}
 static void edp_wait_backlight_off(struct intel_dp *intel_dp)
 	DRM_DEBUG_KMS("Wait for panel power cycle\n");
-	ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE);
+	wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off,
 	control &= ~PANEL_UNLOCK_MASK;
 	control |= PANEL_UNLOCK_REGS;
 	return control;
+}
-void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp)
+static bool _edp_panel_vdd_on(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
+	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum intel_display_power_domain power_domain;
 	u32 pp;
+	u32 pp_stat_reg, pp_ctrl_reg;
-	u32 pp_stat_reg, pp_ctrl_reg;
+	bool need_to_disable = !intel_dp->want_panel_vdd;
-	if (!is_edp(intel_dp))
-		return;
-	WARN(intel_dp->want_panel_vdd,
+	if (!is_edp(intel_dp))
-	     "eDP VDD already requested on\n");
+		return false;
+	intel_dp->want_panel_vdd = true;
-	intel_dp->want_panel_vdd = true;
 	if (edp_have_panel_vdd(intel_dp))
-	if (ironlake_edp_have_panel_vdd(intel_dp))
+		return need_to_disable;
-		return;
 	power_domain = intel_display_port_power_domain(intel_encoder);
-	intel_runtime_pm_get(dev_priv);
+	intel_display_power_get(dev_priv, power_domain);
 	DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
 			I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
 	/*
 	 * If the panel wasn't on, delay before accessing aux channel
 	 */
-	if (!ironlake_edp_have_panel_power(intel_dp)) {
+	if (!edp_have_panel_power(intel_dp)) {
 		DRM_DEBUG_KMS("eDP was not running\n");
 		msleep(intel_dp->panel_power_up_delay);
+	}
+	return need_to_disable;
+}
+void intel_edp_panel_vdd_on(struct intel_dp *intel_dp)
+{
+	if (is_edp(intel_dp)) {
+		bool vdd = _edp_panel_vdd_on(intel_dp);
+		WARN(!vdd, "eDP VDD already requested on\n");
+	}
+}
-static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp)
+static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 pp;
 	u32 pp_stat_reg, pp_ctrl_reg;
+	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
+	if (!intel_dp->want_panel_vdd && edp_have_panel_vdd(intel_dp)) {
+		struct intel_digital_port *intel_dig_port =
+						dp_to_dig_port(intel_dp);
-	WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
+		struct intel_encoder *intel_encoder = &intel_dig_port->base;
 		enum intel_display_power_domain power_domain;
 	if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) {
 	/* Make sure sequencer is idle before allowing subsequent activity */
 		DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
 		I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
 		if ((pp & POWER_TARGET_ON) == 0)
+			intel_dp->last_power_cycle = jiffies;
-			msleep(intel_dp->panel_power_cycle_delay);
 		power_domain = intel_display_port_power_domain(intel_encoder);
-		intel_runtime_pm_put(dev_priv);
+		intel_display_power_put(dev_priv, power_domain);
 	}
+}
-static void ironlake_panel_vdd_work(struct work_struct *__work)
+static void edp_panel_vdd_work(struct work_struct *__work)
+{
 	struct intel_dp *intel_dp = container_of(to_delayed_work(__work),
 						 struct intel_dp, panel_vdd_work);
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+	edp_panel_vdd_off_sync(intel_dp);
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+}
+static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp)
+{
+	unsigned long delay;
+	/*
+	 * Queue the timer to fire a long time from now (relative to the power
+	 * down delay) to keep the panel power up across a sequence of
 	 * operations.
-	mutex_lock(&dev->mode_config.mutex);
+	 */
-	ironlake_panel_vdd_off_sync(intel_dp);
+	delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5);
-	mutex_unlock(&dev->mode_config.mutex);
+	schedule_delayed_work(&intel_dp->panel_vdd_work, delay);
+}
-void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync)
+static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync)
 {
 	if (!is_edp(intel_dp))
 		return;
-	WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on");
-	intel_dp->want_panel_vdd = false;
-	if (sync) {
-		ironlake_panel_vdd_off_sync(intel_dp);
-	} else {
-		/*
+	WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on");
-		 * Queue the timer to fire a long
-		 * time from now (relative to the power down delay)
+	intel_dp->want_panel_vdd = false;
 		 * to keep the panel power up across a sequence of operations
-		 */
+	if (sync)
-		schedule_delayed_work(&intel_dp->panel_vdd_work,
+		edp_panel_vdd_off_sync(intel_dp);
-				      msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5));
+	else
 	if (!is_edp(intel_dp))
 		return;
 	DRM_DEBUG_KMS("Turn eDP power on\n");
-	if (ironlake_edp_have_panel_power(intel_dp)) {
+	if (edp_have_panel_power(intel_dp)) {
 		DRM_DEBUG_KMS("eDP power already on\n");
 		return;
+	}
-	ironlake_wait_panel_power_cycle(intel_dp);
+	wait_panel_power_cycle(intel_dp);
 		pp |= PANEL_POWER_RESET;
 	I915_WRITE(pp_ctrl_reg, pp);
 	POSTING_READ(pp_ctrl_reg);
 	wait_panel_on(intel_dp);
-	ironlake_wait_panel_on(intel_dp);
+	intel_dp->last_power_on = jiffies;
 	if (IS_GEN5(dev)) {
 	pp |= PANEL_POWER_RESET; /* restore panel reset bit */
 		I915_WRITE(pp_ctrl_reg, pp);
 		POSTING_READ(pp_ctrl_reg);
+	}
+}
 void intel_edp_panel_off(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-void ironlake_edp_panel_off(struct intel_dp *intel_dp)
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum intel_display_power_domain power_domain;
 	u32 pp;
+	u32 pp_ctrl_reg;
-	u32 pp_ctrl_reg;
+	if (!is_edp(intel_dp))
 		return;
 	if (!is_edp(intel_dp))
-		return;
+	DRM_DEBUG_KMS("Turn eDP power off\n");
 	WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n");
+	pp = ironlake_get_pp_control(intel_dp);
-	DRM_DEBUG_KMS("Turn eDP power off\n");
+	/* We need to switch off panel power _and_ force vdd, for otherwise some
 	 * panels get very unhappy and cease to work. */
+	pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD |
-	pp = ironlake_get_pp_control(intel_dp);
+		EDP_BLC_ENABLE);
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+	intel_dp->want_panel_vdd = false;
 	/* We need to switch off panel power _and_ force vdd, for otherwise some
-	 * panels get very unhappy and cease to work. */
+	I915_WRITE(pp_ctrl_reg, pp);
-	pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_BLC_ENABLE);
+	POSTING_READ(pp_ctrl_reg);
-	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+	intel_dp->last_power_cycle = jiffies;
 	wait_panel_off(intel_dp);
 	I915_WRITE(pp_ctrl_reg, pp);
 	if (!is_edp(intel_dp))
 		return;
+	DRM_DEBUG_KMS("\n");
 	intel_panel_enable_backlight(intel_dp->attached_connector);
 	DRM_DEBUG_KMS("\n");
 	/*
 	 * If we enable the backlight right away following a panel power
 	 * on, we may see slight flicker as the panel syncs with the eDP
 	 * link.  So delay a bit to make sure the image is solid before
 	 * allowing it to appear.
 	 */
-	msleep(intel_dp->backlight_on_delay);
+	wait_backlight_on(intel_dp);
 	pp = ironlake_get_pp_control(intel_dp);
 	pp |= EDP_BLC_ENABLE;
-	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
-	I915_WRITE(pp_ctrl_reg, pp);
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
-	POSTING_READ(pp_ctrl_reg);
 	I915_WRITE(pp_ctrl_reg, pp);
-	intel_panel_enable_backlight(intel_dp->attached_connector);
+	POSTING_READ(pp_ctrl_reg);
+}
-void ironlake_edp_backlight_off(struct intel_dp *intel_dp)
+void intel_edp_backlight_off(struct intel_dp *intel_dp)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 pp;
-	u32 pp_ctrl_reg;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 pp;
-	if (!is_edp(intel_dp))
+	u32 pp_ctrl_reg;
 		return;
 	if (!is_edp(intel_dp))
-	intel_panel_disable_backlight(intel_dp->attached_connector);
+		return;
+	DRM_DEBUG_KMS("\n");
+	pp = ironlake_get_pp_control(intel_dp);
+	pp &= ~EDP_BLC_ENABLE;
-	DRM_DEBUG_KMS("\n");
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
 	pp = ironlake_get_pp_control(intel_dp);
-	pp &= ~EDP_BLC_ENABLE;
+	I915_WRITE(pp_ctrl_reg, pp);
 	POSTING_READ(pp_ctrl_reg);
 	/* Should have a valid DPCD by this point */
 	if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
 		return;
 	if (mode != DRM_MODE_DPMS_ON) {
-		ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER,
+		ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
 						  DP_SET_POWER_D3);
 		if (ret != 1)
 			DRM_DEBUG_DRIVER("failed to write sink power state\n");
 	} else {
 		/*
 		 * When turning on, we need to retry for 1ms to give the sink
 		 * time to wake up.
 		 */
 		for (i = 0; i < 3; i++) {
-			ret = intel_dp_aux_native_write_1(intel_dp,
-							  DP_SET_POWER,
+			ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
 							  DP_SET_POWER_D0);
 			if (ret == 1)
 				break;
 			msleep(1);
+{
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	enum port port = dp_to_dig_port(intel_dp)->port;
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum intel_display_power_domain power_domain;
+	u32 tmp;
+	power_domain = intel_display_port_power_domain(encoder);
+	if (!intel_display_power_enabled(dev_priv, power_domain))
+		return false;
-	u32 tmp = I915_READ(intel_dp->output_reg);
+	tmp = I915_READ(intel_dp->output_reg);
 	if (!(tmp & DP_PORT_EN))
 		return false;
+	if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) {
+		*pipe = PORT_TO_PIPE_CPT(tmp);
-	if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) {
+	} else if (IS_CHERRYVIEW(dev)) {
-		*pipe = PORT_TO_PIPE_CPT(tmp);
+		*pipe = DP_PORT_TO_PIPE_CHV(tmp);
 	} else if (!HAS_PCH_CPT(dev) || port == PORT_A) {
 		*pipe = PORT_TO_PIPE(tmp);
 	} else {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	enum port port = dp_to_dig_port(intel_dp)->port;
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	int dotclock;
 	if ((port == PORT_A) || !HAS_PCH_CPT(dev)) {
+	tmp = I915_READ(intel_dp->output_reg);
+	if (tmp & DP_AUDIO_OUTPUT_ENABLE)
+		pipe_config->has_audio = true;
-		tmp = I915_READ(intel_dp->output_reg);
+	if ((port == PORT_A) || !HAS_PCH_CPT(dev)) {
 		if (tmp & DP_SYNC_HS_HIGH)
 			flags |= DRM_MODE_FLAG_PHSYNC;
 		else
 			      pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp);
 		dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp;
+	}
+}
-static bool is_edp_psr(struct drm_device *dev)
+static bool is_edp_psr(struct intel_dp *intel_dp)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
+{
-	return dev_priv->psr.sink_support;
+	return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED;
+}
 static bool intel_edp_is_psr_enabled(struct drm_device *dev)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct edp_vsc_psr psr_vsc;
-	if (intel_dp->psr_setup_done)
-		return;
 	/* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
 	memset(&psr_vsc, 0, sizeof(psr_vsc));
 	psr_vsc.sdp_header.HB0 = 0;
 	psr_vsc.sdp_header.HB1 = 0x7;
 	intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
 	/* Avoid continuous PSR exit by masking memup and hpd */
 	I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
-		   EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
-	intel_dp->psr_setup_done = true;
+		   EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
+}
+static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
-static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
+{
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp, 0);
+	uint32_t aux_clock_divider;
+	int precharge = 0x3;
+	int msg_size = 5;       /* Header(4) + Message(1) */
+	bool only_standby = false;
+	aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0);
-	int precharge = 0x3;
+	if (IS_BROADWELL(dev) && dig_port->port != PORT_A)
-	int msg_size = 5;       /* Header(4) + Message(1) */
+		only_standby = true;
-	/* Enable PSR in sink */
-	if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT)
+	/* Enable PSR in sink */
-		intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG,
+	if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby)
-					    DP_PSR_ENABLE &
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
-					    ~DP_PSR_MAIN_LINK_ACTIVE);
-	else
+				   DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE);
-		intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG,
+	else
-					    DP_PSR_ENABLE |
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
-					    DP_PSR_MAIN_LINK_ACTIVE);
+				   DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
 		   (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT));
+}
 static void intel_edp_psr_enable_source(struct intel_dp *intel_dp)
+{
-{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	uint32_t max_sleep_time = 0x1f;
 	uint32_t idle_frames = 1;
 	uint32_t val = 0x0;
+	const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
+	bool only_standby = false;
+	if (IS_BROADWELL(dev) && dig_port->port != PORT_A)
-	const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
+		only_standby = true;
-	if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) {
+	if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) {
 		val |= EDP_PSR_LINK_STANDBY;
 		val |= EDP_PSR_TP2_TP3_TIME_0us;
+		val |= EDP_PSR_TP1_TIME_0us;
-		val |= EDP_PSR_TP1_TIME_0us;
+		val |= EDP_PSR_SKIP_AUX_EXIT;
-		val |= EDP_PSR_SKIP_AUX_EXIT;
+		val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0;
 	} else
 		val |= EDP_PSR_LINK_DISABLE;
 	I915_WRITE(EDP_PSR_CTL(dev), val |
-		   IS_BROADWELL(dev) ? 0 : link_entry_time |
+		   (IS_BROADWELL(dev) ? 0 : link_entry_time) |
 		   max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT |
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_crtc *crtc = dig_port->base.base.crtc;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct drm_i915_gem_object *obj = to_intel_framebuffer(crtc->fb)->obj;
-	struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
+	lockdep_assert_held(&dev_priv->psr.lock);
+	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
-	dev_priv->psr.source_ok = false;
-	if (!HAS_PSR(dev)) {
+	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
-		DRM_DEBUG_KMS("PSR not supported on this platform\n");
-		return false;
-	}
 	dev_priv->psr.source_ok = false;
 	if ((intel_encoder->type != INTEL_OUTPUT_EDP) ||
-	    (dig_port->port != PORT_A)) {
+	if (IS_HASWELL(dev) && dig_port->port != PORT_A) {
 		DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n");
 		return false;
+	}
-	if (!i915_enable_psr) {
-		DRM_DEBUG_KMS("PSR disable by flag\n");
-		return false;
+	if (!i915.enable_psr) {
-	}
-	crtc = dig_port->base.base.crtc;
-	if (crtc == NULL) {
-		DRM_DEBUG_KMS("crtc not active for PSR\n");
+		DRM_DEBUG_KMS("PSR disable by flag\n");
-		return false;
-	}
-	intel_crtc = to_intel_crtc(crtc);
-	if (!intel_crtc_active(crtc)) {
-		DRM_DEBUG_KMS("crtc not active for PSR\n");
-		return false;
-	}
-	obj = to_intel_framebuffer(crtc->fb)->obj;
-	if (obj->tiling_mode != I915_TILING_X ||
-	    obj->fence_reg == I915_FENCE_REG_NONE) {
-		DRM_DEBUG_KMS("PSR condition failed: fb not tiled or fenced\n");
 		return false;
-	}
+	}
 	if (I915_READ(SPRCTL(intel_crtc->pipe)) & SPRITE_ENABLE) {
-		DRM_DEBUG_KMS("PSR condition failed: Sprite is Enabled\n");
+	/* Below limitations aren't valid for Broadwell */
-		return false;
+	if (IS_BROADWELL(dev))
 	if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
 		DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n");
 		return false;
+	}
  out:
 	dev_priv->psr.source_ok = true;
 	return true;
+}
 static void intel_edp_psr_do_enable(struct intel_dp *intel_dp)
-{
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	if (!intel_edp_psr_match_conditions(intel_dp) ||
+	struct drm_device *dev = intel_dig_port->base.base.dev;
-	    intel_edp_is_psr_enabled(dev))
+	struct drm_i915_private *dev_priv = dev->dev_private;
-		return;
 	WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE);
-	/* Setup PSR once */
+	WARN_ON(dev_priv->psr.active);
-	intel_edp_psr_setup(intel_dp);
+	lockdep_assert_held(&dev_priv->psr.lock);
+	/* Enable PSR on the panel */
+	intel_edp_psr_enable_sink(intel_dp);
 	/* Enable PSR on the panel */
-	intel_edp_psr_enable_sink(intel_dp);
+	/* Enable PSR on the host */
 	intel_edp_psr_enable_source(intel_dp);
 	/* Enable PSR on the host */
+	dev_priv->psr.active = true;
+}
+void intel_edp_psr_enable(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	intel_edp_psr_enable_source(intel_dp);
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	if (!HAS_PSR(dev)) {
+		DRM_DEBUG_KMS("PSR not supported on this platform\n");
+		return;
+	}
-}
+	if (!is_edp_psr(intel_dp)) {
+		DRM_DEBUG_KMS("PSR not supported by this panel\n");
+		return;
+	}
+	mutex_lock(&dev_priv->psr.lock);
+	if (dev_priv->psr.enabled) {
+		DRM_DEBUG_KMS("PSR already in use\n");
+		mutex_unlock(&dev_priv->psr.lock);
+		return;
+	}
+	dev_priv->psr.busy_frontbuffer_bits = 0;
 void intel_edp_psr_enable(struct intel_dp *intel_dp)
 	/* Setup PSR once */
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	intel_edp_psr_setup(intel_dp);
-	if (intel_edp_psr_match_conditions(intel_dp) &&
+	if (intel_edp_psr_match_conditions(intel_dp))
+		dev_priv->psr.enabled = intel_dp;
-	    !intel_edp_is_psr_enabled(dev))
+	mutex_unlock(&dev_priv->psr.lock);
+}
 		intel_edp_psr_do_enable(intel_dp);
+void intel_edp_psr_disable(struct intel_dp *intel_dp)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = dev->dev_private;
 void intel_edp_psr_disable(struct intel_dp *intel_dp)
 	mutex_lock(&dev_priv->psr.lock);
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	if (!dev_priv->psr.enabled) {
-	struct drm_i915_private *dev_priv = dev->dev_private;
+		mutex_unlock(&dev_priv->psr.lock);
+		return;
+	}
+	if (dev_priv->psr.active) {
 	I915_WRITE(EDP_PSR_CTL(dev),
+		   I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE);
+	/* Wait till PSR is idle */
+	if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) &
+		       EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10))
+		DRM_ERROR("Timed out waiting for PSR Idle State\n");
-	if (!intel_edp_is_psr_enabled(dev))
-		return;
+		dev_priv->psr.active = false;
+	} else {
+		WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE);
-	I915_WRITE(EDP_PSR_CTL(dev),
+	}
-		   I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE);
-	/* Wait till PSR is idle */
+	dev_priv->psr.enabled = NULL;
-	if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) &
+	mutex_unlock(&dev_priv->psr.lock);
-		       EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10))
+	cancel_delayed_work_sync(&dev_priv->psr.work);
+}
+static void intel_edp_psr_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, typeof(*dev_priv), psr.work.work);
+	struct intel_dp *intel_dp = dev_priv->psr.enabled;
-		DRM_ERROR("Timed out waiting for PSR Idle State\n");
-}
-void intel_edp_psr_update(struct drm_device *dev)
+	mutex_lock(&dev_priv->psr.lock);
+	intel_dp = dev_priv->psr.enabled;
 	struct intel_encoder *encoder;
+	if (!intel_dp)
+		goto unlock;
+	/*
+	 * The delayed work can race with an invalidate hence we need to
+	 * recheck. Since psr_flush first clears this and then reschedules we
+	 * won't ever miss a flush when bailing out here.
+	 */
+	if (dev_priv->psr.busy_frontbuffer_bits)
+		goto unlock;
+	intel_edp_psr_do_enable(intel_dp);
+unlock:
+	mutex_unlock(&dev_priv->psr.lock);
+}
+static void intel_edp_psr_do_exit(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	if (dev_priv->psr.active) {
+		u32 val = I915_READ(EDP_PSR_CTL(dev));
+		WARN_ON(!(val & EDP_PSR_ENABLE));
+		I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE);
+		dev_priv->psr.active = false;
+	}
+}
+void intel_edp_psr_invalidate(struct drm_device *dev,
+			      unsigned frontbuffer_bits)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_crtc *crtc;
+	enum pipe pipe;
+	mutex_lock(&dev_priv->psr.lock);
+	if (!dev_priv->psr.enabled) {
+		mutex_unlock(&dev_priv->psr.lock);
+				return;
+	}
+	crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc;
+	pipe = to_intel_crtc(crtc)->pipe;
+	intel_edp_psr_do_exit(dev);
+	frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
+	dev_priv->psr.busy_frontbuffer_bits |= frontbuffer_bits;
+	mutex_unlock(&dev_priv->psr.lock);
+}
+void intel_edp_psr_flush(struct drm_device *dev,
+			 unsigned frontbuffer_bits)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_crtc *crtc;
+	enum pipe pipe;
+	mutex_lock(&dev_priv->psr.lock);
+	if (!dev_priv->psr.enabled) {
+		mutex_unlock(&dev_priv->psr.lock);
+		return;
+		}
+	crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc;
+	pipe = to_intel_crtc(crtc)->pipe;
+	dev_priv->psr.busy_frontbuffer_bits &= ~frontbuffer_bits;
+	/*
+	 * On Haswell sprite plane updates don't result in a psr invalidating
+	 * signal in the hardware. Which means we need to manually fake this in
+	 * software for all flushes, not just when we've seen a preceding
+	 * invalidation through frontbuffer rendering.
+	 */
+	if (IS_HASWELL(dev) &&
-	struct intel_dp *intel_dp = NULL;
+	    (frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe)))
 		intel_edp_psr_do_exit(dev);
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head)
-		if (encoder->type == INTEL_OUTPUT_EDP) {
+	if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)
-			intel_dp = enc_to_intel_dp(&encoder->base);
+		schedule_delayed_work(&dev_priv->psr.work,
 				      msecs_to_jiffies(100));
-			if (!is_edp_psr(dev))
+	mutex_unlock(&dev_priv->psr.lock);
 				return;
+void intel_edp_psr_init(struct drm_device *dev)
 			if (!intel_edp_psr_match_conditions(intel_dp))
-				intel_edp_psr_disable(intel_dp);
+	struct drm_i915_private *dev_priv = dev->dev_private;
 			else
-				if (!intel_edp_is_psr_enabled(dev))
+	INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work);
-					intel_edp_psr_do_enable(intel_dp);
+	mutex_init(&dev_priv->psr.lock);
+}
-}
 static void intel_disable_dp(struct intel_encoder *encoder)
 static void intel_disable_dp(struct intel_encoder *encoder)
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
-	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	enum port port = dp_to_dig_port(intel_dp)->port;
+	struct drm_device *dev = encoder->base.dev;
-	struct drm_device *dev = encoder->base.dev;
+	/* Make sure the panel is off before trying to change the mode. But also
-	/* 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. */
-	 * ensure that we have vdd while we switch off the panel. */
+	intel_edp_panel_vdd_on(intel_dp);
+	intel_edp_backlight_off(intel_dp);
+	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
+	intel_edp_panel_off(intel_dp);
+	/* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */
+	if (!(port == PORT_A || IS_VALLEYVIEW(dev)))
+		intel_dp_link_down(intel_dp);
+}
+static void g4x_post_disable_dp(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	enum port port = dp_to_dig_port(intel_dp)->port;
+	if (port != PORT_A)
+		return;
+	intel_dp_link_down(intel_dp);
+	ironlake_edp_pll_off(intel_dp);
+}
+static void vlv_post_disable_dp(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	intel_dp_link_down(intel_dp);
+}
+static void chv_post_disable_dp(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc =
+		to_intel_crtc(encoder->base.crtc);
+	enum dpio_channel ch = vlv_dport_to_channel(dport);
+	enum pipe pipe = intel_crtc->pipe;
+	u32 val;
+		intel_dp_link_down(intel_dp);
-	ironlake_edp_backlight_off(intel_dp);
+	mutex_lock(&dev_priv->dpio_lock);
 	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
-	ironlake_edp_panel_off(intel_dp);
+	/* Propagate soft reset to data lane reset */
 	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
 	uint32_t dp_reg = I915_READ(intel_dp->output_reg);
 	if (WARN_ON(dp_reg & DP_PORT_EN))
 		return;
-		ironlake_edp_panel_vdd_on(intel_dp);
+	intel_edp_panel_vdd_on(intel_dp);
 	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
 			intel_dp_start_link_train(intel_dp);
-				ironlake_edp_panel_on(intel_dp);
+	intel_edp_panel_on(intel_dp);
-			ironlake_edp_panel_vdd_off(intel_dp, true);
+	edp_panel_vdd_off(intel_dp, true);
 			intel_dp_complete_link_train(intel_dp);
 	intel_dp_stop_link_train(intel_dp);
+}
 static void g4x_enable_dp(struct intel_encoder *encoder)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	intel_enable_dp(encoder);
-		ironlake_edp_backlight_on(intel_dp);
+	intel_edp_backlight_on(intel_dp);
 }
 static void vlv_enable_dp(struct intel_encoder *encoder)
+{
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	intel_edp_backlight_on(intel_dp);
+}
-	ironlake_edp_backlight_on(intel_dp);
+static void g4x_pre_enable_dp(struct intel_encoder *encoder)
+{
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
-static void g4x_pre_enable_dp(struct intel_encoder *encoder)
+	intel_dp_prepare(encoder);
-	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	/* Only ilk+ has port A */
-	struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
+	if (dport->port == PORT_A) {
 	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
 	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
+	mutex_unlock(&dev_priv->dpio_lock);
 	mutex_unlock(&dev_priv->dpio_lock);
 	if (is_edp(intel_dp)) {
 	/* init power sequencer on this pipe and port */
 	intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq);
+	intel_dp_init_panel_power_sequencer_registers(dev, intel_dp,
-	intel_dp_init_panel_power_sequencer_registers(dev, intel_dp,
+						      &power_seq);
 						      &power_seq);
 	struct intel_crtc *intel_crtc =
 		to_intel_crtc(encoder->base.crtc);
 	enum dpio_channel port = vlv_dport_to_channel(dport);
 	int pipe = intel_crtc->pipe;
+	intel_dp_prepare(encoder);
 	/* Program Tx lane resets to default */
 	mutex_lock(&dev_priv->dpio_lock);
 	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
 			 DPIO_PCS_TX_LANE2_RESET |
 	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
 	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
 	mutex_unlock(&dev_priv->dpio_lock);
+}
+static void chv_pre_enable_dp(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+	struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct edp_power_seq power_seq;
+	struct intel_crtc *intel_crtc =
+		to_intel_crtc(encoder->base.crtc);
+	enum dpio_channel ch = vlv_dport_to_channel(dport);
+	int pipe = intel_crtc->pipe;
+	int data, i;
+	u32 val;
+	mutex_lock(&dev_priv->dpio_lock);
+	/* Deassert soft data lane reset*/
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
+	val |= CHV_PCS_REQ_SOFTRESET_EN;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
+	val |= CHV_PCS_REQ_SOFTRESET_EN;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
+	val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
+	val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
+	/* Program Tx lane latency optimal setting*/
+	for (i = 0; i < 4; i++) {
+		/* Set the latency optimal bit */
+		data = (i == 1) ? 0x0 : 0x6;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i),
+				data << DPIO_FRC_LATENCY_SHFIT);
+		/* Set the upar bit */
+		data = (i == 1) ? 0x0 : 0x1;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
+				data << DPIO_UPAR_SHIFT);
+	}
+	/* Data lane stagger programming */
+	/* FIXME: Fix up value only after power analysis */
+	mutex_unlock(&dev_priv->dpio_lock);
+	if (is_edp(intel_dp)) {
+		/* init power sequencer on this pipe and port */
+		intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq);
+		intel_dp_init_panel_power_sequencer_registers(dev, intel_dp,
+							      &power_seq);
+	}
+	intel_enable_dp(encoder);
+	vlv_wait_port_ready(dev_priv, dport);
+}
+static void chv_dp_pre_pll_enable(struct intel_encoder *encoder)
+{
+	struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc =
+		to_intel_crtc(encoder->base.crtc);
+	enum dpio_channel ch = vlv_dport_to_channel(dport);
+	enum pipe pipe = intel_crtc->pipe;
+	u32 val;
+	mutex_lock(&dev_priv->dpio_lock);
+	/* program left/right clock distribution */
+	if (pipe != PIPE_B) {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+		val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+		if (ch == DPIO_CH0)
+			val |= CHV_BUFLEFTENA1_FORCE;
+		if (ch == DPIO_CH1)
+			val |= CHV_BUFRIGHTENA1_FORCE;
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+	} else {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+		val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+		if (ch == DPIO_CH0)
+			val |= CHV_BUFLEFTENA2_FORCE;
+		if (ch == DPIO_CH1)
+			val |= CHV_BUFRIGHTENA2_FORCE;
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+	}
+	/* program clock channel usage */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
+	val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
+	if (pipe != PIPE_B)
+		val &= ~CHV_PCS_USEDCLKCHANNEL;
+	else
+		val |= CHV_PCS_USEDCLKCHANNEL;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch));
+	val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
+	if (pipe != PIPE_B)
+		val &= ~CHV_PCS_USEDCLKCHANNEL;
+	else
+		val |= CHV_PCS_USEDCLKCHANNEL;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val);
+	/*
+	 * This a a bit weird since generally CL
+	 * matches the pipe, but here we need to
+	 * pick the CL based on the port.
+	 */
+	val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch));
+	if (pipe != PIPE_B)
+		val &= ~CHV_CMN_USEDCLKCHANNEL;
+	else
+		val |= CHV_CMN_USEDCLKCHANNEL;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
+	mutex_unlock(&dev_priv->dpio_lock);
+}
 /*
  * Native read with retry for link status and receiver capability reads for
+ * cases where the sink may still be asleep.
+ *
+ * Sinks are *supposed* to come up within 1ms from an off state, but we're also
- * cases where the sink may still be asleep.
+ * supposed to retry 3 times per the spec.
  */
-static bool
+static ssize_t
-intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address,
+intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset,
-			       uint8_t *recv, int recv_bytes)
+			void *buffer, size_t size)
+{
-{
+	ssize_t ret;
-	int ret, i;
-	/*
-	 * Sinks are *supposed* to come up within 1ms from an off state,
-	 * but we're also supposed to retry 3 times per the spec.
+	int i;
-	 */
-	for (i = 0; i < 3; i++) {
-		ret = intel_dp_aux_native_read(intel_dp, address, recv,
+	for (i = 0; i < 3; i++) {
-					       recv_bytes);
+		ret = drm_dp_dpcd_read(aux, offset, buffer, size);
-		if (ret == recv_bytes)
+		if (ret == size)
-			return true;
+			return ret;
 		msleep(1);
+	}
-	return false;
+	return ret;
+}
 /*
  * Fetch AUX CH registers 0x202 - 0x207 which contain
  * link status information
  */
 static bool
 intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE])
 {
-	return intel_dp_aux_native_read_retry(intel_dp,
+	return intel_dp_dpcd_read_wake(&intel_dp->aux,
-					      DP_LANE0_1_STATUS,
-					      link_status,
+					      DP_LANE0_1_STATUS,
-					      DP_LINK_STATUS_SIZE);
-}
-/*
+					      link_status,
- * These are source-specific values; current Intel hardware supports
+				       DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE;
  * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB
  */
 /* These are source-specific values. */
 static uint8_t
 intel_dp_voltage_max(struct intel_dp *intel_dp)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	enum port port = dp_to_dig_port(intel_dp)->port;
 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
+{
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	enum port port = dp_to_dig_port(intel_dp)->port;
-	if (IS_BROADWELL(dev)) {
-		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
-		case DP_TRAIN_VOLTAGE_SWING_400:
-		case DP_TRAIN_VOLTAGE_SWING_600:
-			return DP_TRAIN_PRE_EMPHASIS_6;
-		case DP_TRAIN_VOLTAGE_SWING_800:
-			return DP_TRAIN_PRE_EMPHASIS_3_5;
-		case DP_TRAIN_VOLTAGE_SWING_1200:
-		default:
-			return DP_TRAIN_PRE_EMPHASIS_0;
-		}
-	} else if (IS_HASWELL(dev)) {
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
 		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
 		case DP_TRAIN_VOLTAGE_SWING_400:
 			return DP_TRAIN_PRE_EMPHASIS_9_5;
 		case DP_TRAIN_VOLTAGE_SWING_600:
 	mutex_unlock(&dev_priv->dpio_lock);
 	return 0;
+}
+static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
+	struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc);
+	u32 deemph_reg_value, margin_reg_value, val;
+	uint8_t train_set = intel_dp->train_set[0];
+	enum dpio_channel ch = vlv_dport_to_channel(dport);
+	enum pipe pipe = intel_crtc->pipe;
+	int i;
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPHASIS_0:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_400:
+			deemph_reg_value = 128;
+			margin_reg_value = 52;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_600:
+			deemph_reg_value = 128;
+			margin_reg_value = 77;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_800:
+			deemph_reg_value = 128;
+			margin_reg_value = 102;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_1200:
+			deemph_reg_value = 128;
+			margin_reg_value = 154;
+			/* FIXME extra to set for 1200 */
+			break;
+		default:
+			return 0;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPHASIS_3_5:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_400:
+			deemph_reg_value = 85;
+			margin_reg_value = 78;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_600:
+			deemph_reg_value = 85;
+			margin_reg_value = 116;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_800:
+			deemph_reg_value = 85;
+			margin_reg_value = 154;
+			break;
+		default:
+			return 0;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPHASIS_6:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_400:
+			deemph_reg_value = 64;
+			margin_reg_value = 104;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_600:
+			deemph_reg_value = 64;
+			margin_reg_value = 154;
+			break;
+		default:
+			return 0;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPHASIS_9_5:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_400:
+			deemph_reg_value = 43;
+			margin_reg_value = 154;
+			break;
+		default:
+			return 0;
+		}
+		break;
+	default:
+		return 0;
+	}
+	mutex_lock(&dev_priv->dpio_lock);
+	/* Clear calc init */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
+	val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
+	val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
+	/* Program swing deemph */
+	for (i = 0; i < 4; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
+		val &= ~DPIO_SWING_DEEMPH9P5_MASK;
+		val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
+	}
+	/* Program swing margin */
+	for (i = 0; i < 4; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
+		val &= ~DPIO_SWING_MARGIN_MASK;
+		val |= margin_reg_value << DPIO_SWING_MARGIN_SHIFT;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
+	}
+	/* Disable unique transition scale */
+	for (i = 0; i < 4; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
+		val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
+	}
+	if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK)
+			== DP_TRAIN_PRE_EMPHASIS_0) &&
+		((train_set & DP_TRAIN_VOLTAGE_SWING_MASK)
+			== DP_TRAIN_VOLTAGE_SWING_1200)) {
+		/*
+		 * The document said it needs to set bit 27 for ch0 and bit 26
+		 * for ch1. Might be a typo in the doc.
+		 * For now, for this unique transition scale selection, set bit
+		 * 27 for ch0 and ch1.
+		 */
+		for (i = 0; i < 4; i++) {
+			val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
+			val |= DPIO_TX_UNIQ_TRANS_SCALE_EN;
+			vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
+		}
+		for (i = 0; i < 4; i++) {
+			val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
+			val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT);
+			val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT);
+			vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
+		}
+	}
+	/* Start swing calculation */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
+	val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
+	val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
+	/* LRC Bypass */
+	val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
+	val |= DPIO_LRC_BYPASS;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val);
+	mutex_unlock(&dev_priv->dpio_lock);
+	return 0;
+}
 static void
 intel_get_adjust_train(struct intel_dp *intel_dp,
 		       const uint8_t link_status[DP_LINK_STATUS_SIZE])
 			      "0x%x\n", signal_levels);
 		return DDI_BUF_EMP_400MV_0DB_HSW;
+	}
+}
-static uint32_t
-intel_bdw_signal_levels(uint8_t train_set)
-{
-	int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
-					 DP_TRAIN_PRE_EMPHASIS_MASK);
-	switch (signal_levels) {
-	case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0:
-		return DDI_BUF_EMP_400MV_0DB_BDW;	/* Sel0 */
-	case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5:
-		return DDI_BUF_EMP_400MV_3_5DB_BDW;	/* Sel1 */
-	case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6:
-		return DDI_BUF_EMP_400MV_6DB_BDW;	/* Sel2 */
-	case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0:
-		return DDI_BUF_EMP_600MV_0DB_BDW;	/* Sel3 */
-	case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5:
-		return DDI_BUF_EMP_600MV_3_5DB_BDW;	/* Sel4 */
-	case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6:
-		return DDI_BUF_EMP_600MV_6DB_BDW;	/* Sel5 */
-	case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0:
-		return DDI_BUF_EMP_800MV_0DB_BDW;	/* Sel6 */
-	case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5:
-		return DDI_BUF_EMP_800MV_3_5DB_BDW;	/* Sel7 */
-	case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0:
-		return DDI_BUF_EMP_1200MV_0DB_BDW;	/* Sel8 */
-	default:
-		DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:"
-			      "0x%x\n", signal_levels);
-		return DDI_BUF_EMP_400MV_0DB_BDW;	/* Sel0 */
-	}
-}
 /* Properly updates "DP" with the correct signal levels. */
 static void
 intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP)
+{
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->port;
 	struct drm_device *dev = intel_dig_port->base.base.dev;
 	uint32_t signal_levels, mask;
 	uint8_t train_set = intel_dp->train_set[0];
-	if (IS_BROADWELL(dev)) {
-		signal_levels = intel_bdw_signal_levels(train_set);
 		mask = DDI_BUF_EMP_MASK;
-	} else if (IS_HASWELL(dev)) {
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+		signal_levels = intel_hsw_signal_levels(train_set);
+		mask = DDI_BUF_EMP_MASK;
+	} else if (IS_CHERRYVIEW(dev)) {
-		signal_levels = intel_hsw_signal_levels(train_set);
+		signal_levels = intel_chv_signal_levels(intel_dp);
-		mask = DDI_BUF_EMP_MASK;
+		mask = 0;
 	} else if (IS_VALLEYVIEW(dev)) {
 		signal_levels = intel_vlv_signal_levels(intel_dp);
 		mask = 0;
 		/* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */
 		memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count);
 		len = intel_dp->lane_count + 1;
+	}
-	ret = intel_dp_aux_native_write(intel_dp, DP_TRAINING_PATTERN_SET,
+	ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET,
 					buf, len);
 	intel_dp_set_signal_levels(intel_dp, DP);
 	I915_WRITE(intel_dp->output_reg, *DP);
 	POSTING_READ(intel_dp->output_reg);
-	ret = intel_dp_aux_native_write(intel_dp, DP_TRAINING_LANE0_SET,
-					intel_dp->train_set,
+	ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET,
-					intel_dp->lane_count);
+				intel_dp->train_set, intel_dp->lane_count);
 	/* Write the link configuration data */
 	link_config[0] = intel_dp->link_bw;
 	link_config[1] = intel_dp->lane_count;
 	if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
 		link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
-	intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, link_config, 2);
+	drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2);
 	link_config[0] = 0;
 	link_config[1] = DP_SET_ANSI_8B10B;
-	intel_dp_aux_native_write(intel_dp, DP_DOWNSPREAD_CTRL, link_config, 2);
+	drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2);
 	DP |= DP_PORT_EN;
 intel_dp_complete_link_train(struct intel_dp *intel_dp)
+{
 	bool channel_eq = false;
 	int tries, cr_tries;
 	uint32_t DP = intel_dp->DP;
+	uint32_t training_pattern = DP_TRAINING_PATTERN_2;
+	/* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/
+	if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3)
+		training_pattern = DP_TRAINING_PATTERN_3;
 	/* channel equalization */
 	if (!intel_dp_set_link_train(intel_dp, &DP,
-				     DP_TRAINING_PATTERN_2 |
+				     training_pattern |
 				     DP_LINK_SCRAMBLING_DISABLE)) {
 		DRM_ERROR("failed to start channel equalization\n");
 		return;
 		/* Make sure clock is still ok */
 		if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) {
 			intel_dp_start_link_train(intel_dp);
 			intel_dp_set_link_train(intel_dp, &DP,
-						DP_TRAINING_PATTERN_2 |
+						training_pattern |
 						DP_LINK_SCRAMBLING_DISABLE);
 			cr_tries++;
 			continue;
 		/* Try 5 times, then try clock recovery if that fails */
 		if (tries > 5) {
 			intel_dp_link_down(intel_dp);
 			intel_dp_start_link_train(intel_dp);
 			intel_dp_set_link_train(intel_dp, &DP,
-						DP_TRAINING_PATTERN_2 |
+						training_pattern |
 						DP_LINK_SCRAMBLING_DISABLE);
 			tries = 0;
 			cr_tries++;
 			continue;
+		}
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *intel_crtc =
 		to_intel_crtc(intel_dig_port->base.base.crtc);
 	uint32_t DP = intel_dp->DP;
-	/*
-	 * DDI code has a strict mode set sequence and we should try to respect
-	 * it, otherwise we might hang the machine in many different ways. So we
-	 * really should be disabling the port only on a complete crtc_disable
-	 * sequence. This function is just called under two conditions on DDI
-	 * code:
-	 * - Link train failed while doing crtc_enable, and on this case we
-	 *   really should respect the mode set sequence and wait for a
-	 *   crtc_disable.
-	 * - Someone turned the monitor off and intel_dp_check_link_status
-	 *   called us. We don't need to disable the whole port on this case, so
-	 *   when someone turns the monitor on again,
-	 *   intel_ddi_prepare_link_retrain will take care of redoing the link
-	 *   train.
-	 */
-	if (HAS_DDI(dev))
+	if (WARN_ON(HAS_DDI(dev)))
 		return;
 		DP &= ~DP_LINK_TRAIN_MASK;
 		I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE);
+	}
 	POSTING_READ(intel_dp->output_reg);
-	/* We don't really know why we're doing this */
-	intel_wait_for_vblank(dev, intel_crtc->pipe);
 	if (HAS_PCH_IBX(dev) &&
 	    I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) {
 		struct drm_crtc *crtc = intel_dig_port->base.base.crtc;
 	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3];
-	if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd,
+	if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd,
-					   sizeof(intel_dp->dpcd)) == 0)
+				    sizeof(intel_dp->dpcd)) < 0)
 		return false; /* aux transfer failed */
 		return false; /* DPCD not present */
 	/* Check if the panel supports PSR */
 	memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd));
 	if (is_edp(intel_dp)) {
-	intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT,
+		intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT,
 				       intel_dp->psr_dpcd,
 				       sizeof(intel_dp->psr_dpcd));
 		if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) {
 			dev_priv->psr.sink_support = true;
 		DRM_DEBUG_KMS("Detected EDP PSR Panel.\n");
+		}
+	}
+	/* Training Pattern 3 support */
+	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 &&
+	    intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) {
+		intel_dp->use_tps3 = true;
+		DRM_DEBUG_KMS("Displayport TPS3 supported");
+	} else
 		intel_dp->use_tps3 = false;
 	if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
 	      DP_DWN_STRM_PORT_PRESENT))
 		return true; /* native DP sink */
 	if (intel_dp->dpcd[DP_DPCD_REV] == 0x10)
 		return true; /* no per-port downstream info */
-	if (intel_dp_aux_native_read_retry(intel_dp, DP_DOWNSTREAM_PORT_0,
+	if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0,
 					   intel_dp->downstream_ports,
 	u8 buf[3];
 	if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
 		return;
-	ironlake_edp_panel_vdd_on(intel_dp);
+	intel_edp_panel_vdd_on(intel_dp);
-	if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3))
+	if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3)
 		DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
 			      buf[0], buf[1], buf[2]);
+	if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3)
+		DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
+			      buf[0], buf[1], buf[2]);
+	edp_panel_vdd_off(intel_dp, false);
+}
+static bool
+intel_dp_probe_mst(struct intel_dp *intel_dp)
+{
+	u8 buf[1];
+	if (!intel_dp->can_mst)
+		return false;
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x12)
+		return false;
+	_edp_panel_vdd_on(intel_dp);
+	if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) {
+		if (buf[0] & DP_MST_CAP) {
+			DRM_DEBUG_KMS("Sink is MST capable\n");
+			intel_dp->is_mst = true;
+		} else {
+			DRM_DEBUG_KMS("Sink is not MST capable\n");
+			intel_dp->is_mst = false;
+		}
+	}
+	edp_panel_vdd_off(intel_dp, false);
+	drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst);
+	return intel_dp->is_mst;
+}
+int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct intel_crtc *intel_crtc =
+		to_intel_crtc(intel_dig_port->base.base.crtc);
+	u8 buf[1];
+	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0)
+		return -EAGAIN;
+	if (!(buf[0] & DP_TEST_CRC_SUPPORTED))
+		return -ENOTTY;
+	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK,
+			       DP_TEST_SINK_START) < 0)
+		return -EAGAIN;
+	/* Wait 2 vblanks to be sure we will have the correct CRC value */
+	intel_wait_for_vblank(dev, intel_crtc->pipe);
+	intel_wait_for_vblank(dev, intel_crtc->pipe);
-	if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3))
+	if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0)
-		DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
+		return -EAGAIN;
 			      buf[0], buf[1], buf[2]);
 	drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0);
+	return 0;
+}
+static bool
+intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector)
+{
+	return intel_dp_dpcd_read_wake(&intel_dp->aux,
+					     DP_DEVICE_SERVICE_IRQ_VECTOR,
-	ironlake_edp_panel_vdd_off(intel_dp, false);
+				       sink_irq_vector, 1) == 1;
 }
 static bool
-intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector)
+intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector)
+{
 	int ret;
-	ret = intel_dp_aux_native_read_retry(intel_dp,
+	ret = intel_dp_dpcd_read_wake(&intel_dp->aux,
-					     DP_DEVICE_SERVICE_IRQ_VECTOR,
+					     DP_SINK_COUNT_ESI,
-					     sink_irq_vector, 1);
+					     sink_irq_vector, 14);
-	if (!ret)
+	if (ret != 14)
 		return false;
+	return true;
+}
+static void
+intel_dp_handle_test_request(struct intel_dp *intel_dp)
+{
+	/* NAK by default */
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK);
+}
+static int
+intel_dp_check_mst_status(struct intel_dp *intel_dp)
+{
+	bool bret;
+	if (intel_dp->is_mst) {
+		u8 esi[16] = { 0 };
+		int ret = 0;
+		int retry;
+		bool handled;
+		bret = intel_dp_get_sink_irq_esi(intel_dp, esi);
+go_again:
+		if (bret == true) {
+			/* check link status - esi[10] = 0x200c */
+			if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) {
+				DRM_DEBUG_KMS("channel EQ not ok, retraining\n");
+				intel_dp_start_link_train(intel_dp);
+				intel_dp_complete_link_train(intel_dp);
+				intel_dp_stop_link_train(intel_dp);
+			}
+			DRM_DEBUG_KMS("got esi %02x %02x %02x\n", esi[0], esi[1], esi[2]);
+			ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled);
+			if (handled) {
+				for (retry = 0; retry < 3; retry++) {
+					int wret;
+					wret = drm_dp_dpcd_write(&intel_dp->aux,
+								 DP_SINK_COUNT_ESI+1,
+								 &esi[1], 3);
+					if (wret == 3) {
+						break;
+					}
+				}
+				bret = intel_dp_get_sink_irq_esi(intel_dp, esi);
+				if (bret == true) {
+					DRM_DEBUG_KMS("got esi2 %02x %02x %02x\n", esi[0], esi[1], esi[2]);
+					goto go_again;
+				}
+			} else
+				ret = 0;
+			return ret;
+		} else {
 			struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	return true;
+			DRM_DEBUG_KMS("failed to get ESI - device may have failed\n");
 			intel_dp->is_mst = false;
 			drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst);
-static void
+			/* send a hotplug event */
-intel_dp_handle_test_request(struct intel_dp *intel_dp)
+			drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev);
+		}
 	/* NAK by default */
-	intel_dp_aux_native_write_1(intel_dp, DP_TEST_RESPONSE, DP_TEST_NAK);
+	return -EINVAL;
-}
+}
 /*
- * According to DP spec
+/*
+ * According to DP spec
  * 5.1.2:
  *  1. Read DPCD
  *  2. Configure link according to Receiver Capabilities
+ *  3. Use Link Training from 2.5.3.3 and 3.5.1.3
+ *  4. Check link status on receipt of hot-plug interrupt
- *  3. Use Link Training from 2.5.3.3 and 3.5.1.3
+ */
- *  4. Check link status on receipt of hot-plug interrupt
+void
- */
+intel_dp_check_link_status(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
+	u8 sink_irq_vector;
-void
+	u8 link_status[DP_LINK_STATUS_SIZE];
 intel_dp_check_link_status(struct intel_dp *intel_dp)
 	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 	struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
 	/* Try to read the source of the interrupt */
 	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
 	    intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) {
 		/* Clear interrupt source */
-		intel_dp_aux_native_write_1(intel_dp,
+		drm_dp_dpcd_writeb(&intel_dp->aux,
 					    DP_DEVICE_SERVICE_IRQ_VECTOR,
 					    sink_irq_vector);
 			DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n");
+	}
 	if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) {
 		DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n",
-			      drm_get_encoder_name(&intel_encoder->base));
+			      intel_encoder->base.name);
 		intel_dp_start_link_train(intel_dp);
 		intel_dp_complete_link_train(intel_dp);
 		intel_dp_stop_link_train(intel_dp);
+	}
 	/* If we're HPD-aware, SINK_COUNT changes dynamically */
 	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
 	    intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) {
+		uint8_t reg;
-		uint8_t reg;
-		if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT,
+		if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT,
-						    ®, 1))
+					    ®, 1) < 0)
+			return connector_status_unknown;
 			return connector_status_unknown;
 		return DP_GET_SINK_COUNT(reg) ? connector_status_connected
 					      : connector_status_disconnected;
+	}
 	/* If no HPD, poke DDC gently */
-	if (drm_probe_ddc(&intel_dp->adapter))
+	if (drm_probe_ddc(&intel_dp->aux.ddc))
 		return connector_status_connected;
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	struct intel_encoder *intel_encoder = &intel_dig_port->base;
 	struct drm_device *dev = connector->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	enum drm_connector_status status;
+	enum intel_display_power_domain power_domain;
 	struct edid *edid = NULL;
+	bool ret;
+	power_domain = intel_display_port_power_domain(intel_encoder);
-	intel_runtime_pm_get(dev_priv);
+	intel_display_power_get(dev_priv, power_domain);
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, connector->name);
+	if (intel_dp->is_mst) {
+		/* MST devices are disconnected from a monitor POV */
+		if (intel_encoder->type != INTEL_OUTPUT_EDP)
+			intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
+		status = connector_status_disconnected;
-	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		goto out;
 		      connector->base.id, drm_get_connector_name(connector));
 	if (status != connector_status_connected)
 		goto out;
+	intel_dp_probe_oui(intel_dp);
+	ret = intel_dp_probe_mst(intel_dp);
+	if (ret) {
+		/* if we are in MST mode then this connector
+		   won't appear connected or have anything with EDID on it */
+		if (intel_encoder->type != INTEL_OUTPUT_EDP)
+			intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
+		status = connector_status_disconnected;
+		goto out;
 	intel_dp_probe_oui(intel_dp);
 	if (intel_dp->force_audio != HDMI_AUDIO_AUTO) {
 		intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON);
 	} else {
-		edid = intel_dp_get_edid(connector, &intel_dp->adapter);
+		edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc);
 		if (edid) {
 			intel_dp->has_audio = drm_detect_monitor_audio(edid);
 			kfree(edid);
 	if (intel_encoder->type != INTEL_OUTPUT_EDP)
 		intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
 	status = connector_status_connected;
 out:
-	intel_runtime_pm_put(dev_priv);
+	intel_display_power_put(dev_priv, power_domain);
 	return status;
+}
 static int intel_dp_get_modes(struct drm_connector *connector)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct drm_device *dev = connector->dev;
-	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_device *dev = connector->dev;
+	enum intel_display_power_domain power_domain;
 	int ret;
+	/* We should parse the EDID data and find out if it has an audio sink
+	 */
+	power_domain = intel_display_port_power_domain(intel_encoder);
-	/* We should parse the EDID data and find out if it has an audio sink
+	intel_display_power_get(dev_priv, power_domain);
 	 */
 	ret = intel_dp_get_edid_modes(connector, &intel_dp->aux.ddc);
-	ret = intel_dp_get_edid_modes(connector, &intel_dp->adapter);
+	intel_display_power_put(dev_priv, power_domain);
 static bool
 intel_dp_detect_audio(struct drm_connector *connector)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	enum intel_display_power_domain power_domain;
 	struct edid *edid;
+	bool has_audio = false;
+	power_domain = intel_display_port_power_domain(intel_encoder);
-	bool has_audio = false;
+	intel_display_power_get(dev_priv, power_domain);
-	edid = intel_dp_get_edid(connector, &intel_dp->adapter);
+	edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc);
 	if (edid) {
 		has_audio = drm_detect_monitor_audio(edid);
+		kfree(edid);
+	}
 		kfree(edid);
 	intel_display_power_put(dev_priv, power_domain);
 	return has_audio;
+{
 	struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	drm_dp_aux_unregister(&intel_dp->aux);
-	i2c_del_adapter(&intel_dp->adapter);
+	intel_dp_mst_encoder_cleanup(intel_dig_port);
 	drm_encoder_cleanup(encoder);
 	if (is_edp(intel_dp)) {
 		cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
-		mutex_lock(&dev->mode_config.mutex);
+		drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
-		ironlake_panel_vdd_off_sync(intel_dp);
+		edp_panel_vdd_off_sync(intel_dp);
-		mutex_unlock(&dev->mode_config.mutex);
+		drm_modeset_unlock(&dev->mode_config.connection_mutex);
+	}
 	kfree(intel_dig_port);
+}
+static void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
+	if (!is_edp(intel_dp))
+		return;
+	edp_panel_vdd_off_sync(intel_dp);
+}
+static void intel_dp_encoder_reset(struct drm_encoder *encoder)
+{
+	intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder));
+}
 static const struct drm_connector_funcs intel_dp_connector_funcs = {
 	.dpms = intel_connector_dpms,
 	.detect = intel_dp_detect,
 	.mode_valid = intel_dp_mode_valid,
 	.best_encoder = intel_best_encoder,
 };
+static const struct drm_encoder_funcs intel_dp_enc_funcs = {
-static const struct drm_encoder_funcs intel_dp_enc_funcs = {
+	.reset = intel_dp_encoder_reset,
 	.destroy = intel_dp_encoder_destroy,
 };
-static void
+void
+intel_dp_hot_plug(struct intel_encoder *intel_encoder)
+{
+	return;
+}
+bool
-intel_dp_hot_plug(struct intel_encoder *intel_encoder)
+intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
+{
+	struct intel_dp *intel_dp = &intel_dig_port->dp;
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum intel_display_power_domain power_domain;
+	bool ret = true;
+	if (intel_dig_port->base.type != INTEL_OUTPUT_EDP)
+		intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT;
+	DRM_DEBUG_KMS("got hpd irq on port %d - %s\n", intel_dig_port->port,
+		      long_hpd ? "long" : "short");
+	power_domain = intel_display_port_power_domain(intel_encoder);
+	intel_display_power_get(dev_priv, power_domain);
+	if (long_hpd) {
+		if (!ibx_digital_port_connected(dev_priv, intel_dig_port))
+			goto mst_fail;
+		if (!intel_dp_get_dpcd(intel_dp)) {
+			goto mst_fail;
+		}
+		intel_dp_probe_oui(intel_dp);
+		if (!intel_dp_probe_mst(intel_dp))
+			goto mst_fail;
+	} else {
+		if (intel_dp->is_mst) {
+			if (intel_dp_check_mst_status(intel_dp) == -EINVAL)
+				goto mst_fail;
+		}
+		if (!intel_dp->is_mst) {
+			/*
+			 * we'll check the link status via the normal hot plug path later -
 			 * but for short hpds we should check it now
+			 */
+			drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+			intel_dp_check_link_status(intel_dp);
+			drm_modeset_unlock(&dev->mode_config.connection_mutex);
+		}
+	}
+	ret = false;
+	goto put_power;
+mst_fail:
+	/* if we were in MST mode, and device is not there get out of MST mode */
+	if (intel_dp->is_mst) {
+		DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state);
+		intel_dp->is_mst = false;
+		drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst);
+	}
+put_power:
-	struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
+	intel_display_power_put(dev_priv, power_domain);
-	intel_dp_check_link_status(intel_dp);
+	return ret;
+}
 			return true;
+	}
 	return false;
+}
-static void
+void
 intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector)
+{
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 			DRM_MODE_SCALE_ASPECT);
 		intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT;
+	}
+}
+static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp)
+{
+	intel_dp->last_power_cycle = jiffies;
+	intel_dp->last_power_on = jiffies;
+	intel_dp->last_backlight_off = jiffies;
+}
 static void
 intel_dp_init_panel_power_sequencer(struct drm_device *dev,
 				    struct intel_dp *intel_dp,
 				    struct edp_power_seq *out)
 		pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe);
 		pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe);
 		pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe);
+	}
+	/*
+	 * And finally store the new values in the power sequencer. The
+	 * backlight delays are set to 1 because we do manual waits on them. For
+	 * T8, even BSpec recommends doing it. For T9, if we don't do this,
+	 * we'll end up waiting for the backlight off delay twice: once when we
+	 * do the manual sleep, and once when we disable the panel and wait for
+	 * the PP_STATUS bit to become zero.
-	/* And finally store the new values in the power sequencer. */
+	 */
 	pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) |
-		(seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT);
+		(1 << PANEL_LIGHT_ON_DELAY_SHIFT);
-	pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) |
+	pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) |
 		 (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT);
 	/* Compute the divisor for the pp clock, simply match the Bspec
 	 * formula. */
 	pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT;
 		      I915_READ(pp_on_reg),
 		      I915_READ(pp_off_reg),
 		      I915_READ(pp_div_reg));
+}
+void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_encoder *encoder;
+	struct intel_dp *intel_dp = NULL;
+	struct intel_crtc_config *config = NULL;
+	struct intel_crtc *intel_crtc = NULL;
+	struct intel_connector *intel_connector = dev_priv->drrs.connector;
+	u32 reg, val;
+	enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR;
+	if (refresh_rate <= 0) {
+		DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n");
+		return;
+	}
+	if (intel_connector == NULL) {
+		DRM_DEBUG_KMS("DRRS supported for eDP only.\n");
+		return;
+	}
+	/*
+	 * FIXME: This needs proper synchronization with psr state. But really
+	 * hard to tell without seeing the user of this function of this code.
+	 * Check locking and ordering once that lands.
+	 */
+	if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) {
+		DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n");
+		return;
+	}
+	encoder = intel_attached_encoder(&intel_connector->base);
+	intel_dp = enc_to_intel_dp(&encoder->base);
+	intel_crtc = encoder->new_crtc;
+	if (!intel_crtc) {
+		DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n");
+		return;
+	}
+	config = &intel_crtc->config;
+	if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) {
+		DRM_DEBUG_KMS("Only Seamless DRRS supported.\n");
+		return;
+	}
+	if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate)
+		index = DRRS_LOW_RR;
+	if (index == intel_dp->drrs_state.refresh_rate_type) {
+		DRM_DEBUG_KMS(
+			"DRRS requested for previously set RR...ignoring\n");
+		return;
+	}
+	if (!intel_crtc->active) {
+		DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n");
+		return;
+	}
+	if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) {
+		reg = PIPECONF(intel_crtc->config.cpu_transcoder);
+		val = I915_READ(reg);
+		if (index > DRRS_HIGH_RR) {
+			val |= PIPECONF_EDP_RR_MODE_SWITCH;
+			intel_dp_set_m2_n2(intel_crtc, &config->dp_m2_n2);
+		} else {
+			val &= ~PIPECONF_EDP_RR_MODE_SWITCH;
+		}
+		I915_WRITE(reg, val);
+	}
+	/*
+	 * mutex taken to ensure that there is no race between differnt
+	 * drrs calls trying to update refresh rate. This scenario may occur
+	 * in future when idleness detection based DRRS in kernel and
+	 * possible calls from user space to set differnt RR are made.
+	 */
+	mutex_lock(&intel_dp->drrs_state.mutex);
+	intel_dp->drrs_state.refresh_rate_type = index;
+	mutex_unlock(&intel_dp->drrs_state.mutex);
+	DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate);
+}
+static struct drm_display_mode *
+intel_dp_drrs_init(struct intel_digital_port *intel_dig_port,
+			struct intel_connector *intel_connector,
+			struct drm_display_mode *fixed_mode)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct intel_dp *intel_dp = &intel_dig_port->dp;
+	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_display_mode *downclock_mode = NULL;
+	if (INTEL_INFO(dev)->gen <= 6) {
+		DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n");
+		return NULL;
+	}
+	if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) {
+		DRM_INFO("VBT doesn't support DRRS\n");
+		return NULL;
+	}
+	downclock_mode = intel_find_panel_downclock
+					(dev, fixed_mode, connector);
+	if (!downclock_mode) {
+		DRM_INFO("DRRS not supported\n");
+		return NULL;
+	}
+	dev_priv->drrs.connector = intel_connector;
+	mutex_init(&intel_dp->drrs_state.mutex);
+	intel_dp->drrs_state.type = dev_priv->vbt.drrs_type;
+	intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR;
+	DRM_INFO("seamless DRRS supported for eDP panel.\n");
+	return downclock_mode;
+}
+void intel_edp_panel_vdd_sanitize(struct intel_encoder *intel_encoder)
+{
+	struct drm_device *dev = intel_encoder->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_dp *intel_dp;
+	enum intel_display_power_domain power_domain;
+	if (intel_encoder->type != INTEL_OUTPUT_EDP)
+		return;
+	intel_dp = enc_to_intel_dp(&intel_encoder->base);
+	if (!edp_have_panel_vdd(intel_dp))
+		return;
+	/*
+	 * The VDD bit needs a power domain reference, so if the bit is
+	 * already enabled when we boot or resume, grab this reference and
+	 * schedule a vdd off, so we don't hold on to the reference
+	 * indefinitely.
+	 */
+	DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n");
+	power_domain = intel_display_port_power_domain(intel_encoder);
+	intel_display_power_get(dev_priv, power_domain);
+	edp_panel_vdd_schedule_off(intel_dp);
+}
 static bool intel_edp_init_connector(struct intel_dp *intel_dp,
+				     struct intel_connector *intel_connector,
-				     struct intel_connector *intel_connector)
+				     struct edp_power_seq *power_seq)
+{
 	struct drm_connector *connector = &intel_connector->base;
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
-	struct drm_device *dev = intel_dig_port->base.base.dev;
+	struct drm_device *dev = intel_encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_display_mode *fixed_mode = NULL;
-	struct edp_power_seq power_seq = { 0 };
+	struct drm_display_mode *downclock_mode = NULL;
 	bool has_dpcd;
 	struct drm_display_mode *scan;
+	struct edid *edid;
-	struct edid *edid;
+	intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED;
 	if (!is_edp(intel_dp))
 		return true;
-	intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq);
+	intel_edp_panel_vdd_sanitize(intel_encoder);
 	/* Cache DPCD and EDID for edp. */
-	ironlake_edp_panel_vdd_on(intel_dp);
+	intel_edp_panel_vdd_on(intel_dp);
 	has_dpcd = intel_dp_get_dpcd(intel_dp);
-	ironlake_edp_panel_vdd_off(intel_dp, false);
+	edp_panel_vdd_off(intel_dp, false);
 		DRM_INFO("failed to retrieve link info, disabling eDP\n");
 		return false;
+	}
 	/* We now know it's not a ghost, init power sequence regs. */
-	intel_dp_init_panel_power_sequencer_registers(dev, intel_dp,
+	intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, power_seq);
-						      &power_seq);
 	mutex_lock(&dev->mode_config.mutex);
-	edid = drm_get_edid(connector, &intel_dp->adapter);
+	edid = drm_get_edid(connector, &intel_dp->aux.ddc);
 	if (edid) {
 		if (drm_add_edid_modes(connector, edid)) {
 			drm_mode_connector_update_edid_property(connector,
 	/* prefer fixed mode from EDID if available */
 	list_for_each_entry(scan, &connector->probed_modes, head) {
 		if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
+			fixed_mode = drm_mode_duplicate(dev, scan);
+			downclock_mode = intel_dp_drrs_init(
+						intel_dig_port,
-			fixed_mode = drm_mode_duplicate(dev, scan);
+						intel_connector, fixed_mode);
 			break;
+		}
+	}
 		fixed_mode = drm_mode_duplicate(dev,
 					dev_priv->vbt.lfp_lvds_vbt_mode);
 		if (fixed_mode)
 			fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
+	}
+	mutex_unlock(&dev->mode_config.mutex);
-	intel_panel_init(&intel_connector->panel, fixed_mode);
+	intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode);
 	intel_panel_setup_backlight(connector);
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
 	struct intel_encoder *intel_encoder = &intel_dig_port->base;
 	struct drm_device *dev = intel_encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	enum port port = intel_dig_port->port;
-	const char *name = NULL;
+	struct edp_power_seq power_seq = { 0 };
-	int type, error;
+	int type;
+	/* intel_dp vfuncs */
+	if (IS_VALLEYVIEW(dev))
+		intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider;
+	else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+		intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider;
+	else if (HAS_PCH_SPLIT(dev))
+		intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider;
+	else
+		intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider;
+	intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl;
 	/* Preserve the current hw state. */
 	intel_dp->DP = I915_READ(intel_dp->output_reg);
 	connector->interlace_allowed = true;
 	connector->doublescan_allowed = 0;
 	INIT_DELAYED_WORK(&intel_dp->panel_vdd_work,
-			  ironlake_panel_vdd_work);
+			  edp_panel_vdd_work);
 	intel_connector_attach_encoder(intel_connector, intel_encoder);
-	drm_sysfs_connector_add(connector);
+	drm_connector_register(connector);
+	if (HAS_DDI(dev))
-	if (HAS_DDI(dev))
-		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
-	else
-	intel_connector->get_hw_state = intel_connector_get_hw_state;
-	intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10;
-	if (HAS_DDI(dev)) {
-		switch (intel_dig_port->port) {
-		case PORT_A:
-			intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL;
-			break;
-		case PORT_B:
-			intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL;
-			break;
-		case PORT_C:
-			intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL;
-			break;
-		case PORT_D:
-			intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL;
-			break;
-		default:
+		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
-			BUG();
+	else
 	intel_connector->get_hw_state = intel_connector_get_hw_state;
 	intel_connector->unregister = intel_dp_connector_unregister;
 	/* Set up the DDC bus. */
-	switch (port) {
+	/* Set up the hotplug pin. */
-	case PORT_A:
+	switch (port) {
-		intel_encoder->hpd_pin = HPD_PORT_A;
-			name = "DPDDC-A";
+	case PORT_A:
-			break;
+		intel_encoder->hpd_pin = HPD_PORT_A;
-	case PORT_B:
+			break;
-		intel_encoder->hpd_pin = HPD_PORT_B;
-			name = "DPDDC-B";
+	case PORT_B:
-			break;
+		intel_encoder->hpd_pin = HPD_PORT_B;
-	case PORT_C:
+			break;
-		intel_encoder->hpd_pin = HPD_PORT_C;
-			name = "DPDDC-C";
+	case PORT_C:
-			break;
+		intel_encoder->hpd_pin = HPD_PORT_C;
-	case PORT_D:
+			break;
-		intel_encoder->hpd_pin = HPD_PORT_D;
+	case PORT_D:
-			name = "DPDDC-D";
+		intel_encoder->hpd_pin = HPD_PORT_D;
 			break;
 	default:
+		BUG();
-		BUG();
+	}
+	if (is_edp(intel_dp)) {
+		intel_dp_init_panel_power_timestamps(intel_dp);
+		intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq);
+	}
+	intel_dp_aux_init(intel_dp, intel_connector);
-	}
+	/* init MST on ports that can support it */
-	error = intel_dp_i2c_init(intel_dp, intel_connector, name);
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
-	WARN(error, "intel_dp_i2c_init failed with error %d for port %c\n",
+		if (port == PORT_B || port == PORT_C || port == PORT_D) {
-	     error, port_name(port));
+			intel_dp_mst_encoder_init(intel_dig_port, intel_connector->base.base.id);
+		}
-	intel_dp->psr_setup_done = false;
+	}
-	if (!intel_edp_init_connector(intel_dp, intel_connector)) {
+	if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) {
-		i2c_del_adapter(&intel_dp->adapter);
+		drm_dp_aux_unregister(&intel_dp->aux);
 	if (is_edp(intel_dp)) {
 			cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
-			mutex_lock(&dev->mode_config.mutex);
+			drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+}
 void
 intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
+{
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_digital_port *intel_dig_port;
 	struct intel_encoder *intel_encoder;
 	struct drm_encoder *encoder;
 	drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs,
 			 DRM_MODE_ENCODER_TMDS);
 	intel_encoder->compute_config = intel_dp_compute_config;
-	intel_encoder->mode_set = intel_dp_mode_set;
-	intel_encoder->disable = intel_disable_dp;
+	intel_encoder->compute_config = intel_dp_compute_config;
-	intel_encoder->post_disable = intel_post_disable_dp;
+	intel_encoder->disable = intel_disable_dp;
+	intel_encoder->get_hw_state = intel_dp_get_hw_state;
-	intel_encoder->get_hw_state = intel_dp_get_hw_state;
+	intel_encoder->get_config = intel_dp_get_config;
+	intel_encoder->suspend = intel_dp_encoder_suspend;
+	if (IS_CHERRYVIEW(dev)) {
+		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->get_config = intel_dp_get_config;
+		intel_encoder->post_disable = chv_post_disable_dp;
-	if (IS_VALLEYVIEW(dev)) {
+	} else if (IS_VALLEYVIEW(dev)) {
 		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
+		intel_encoder->pre_enable = vlv_pre_enable_dp;
-		intel_encoder->pre_enable = vlv_pre_enable_dp;
+		intel_encoder->enable = vlv_enable_dp;
-		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->post_disable = vlv_post_disable_dp;
 	} else {
+		intel_encoder->pre_enable = g4x_pre_enable_dp;
-		intel_encoder->pre_enable = g4x_pre_enable_dp;
+		intel_encoder->enable = g4x_enable_dp;
-		intel_encoder->enable = g4x_enable_dp;
+		intel_encoder->post_disable = g4x_post_disable_dp;
+	}
+	intel_dig_port->port = port;
+	intel_dig_port->dp.output_reg = output_reg;
+	intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
+	if (IS_CHERRYVIEW(dev)) {
+		if (port == PORT_D)
-	intel_dig_port->port = port;
+			intel_encoder->crtc_mask = 1 << 2;
+		else
-	intel_dig_port->dp.output_reg = output_reg;
+			intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
 	} else {
+	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
+	}
+	intel_encoder->cloneable = 0;
-	intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT;
+	intel_encoder->hot_plug = intel_dp_hot_plug;
 	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
-	intel_encoder->cloneable = false;
+	intel_dig_port->hpd_pulse = intel_dp_hpd_pulse;
-	intel_encoder->hot_plug = intel_dp_hot_plug;
+	dev_priv->hpd_irq_port[port] = intel_dig_port;
 	if (!intel_dp_init_connector(intel_dig_port, intel_connector)) {
+		drm_encoder_cleanup(encoder);
+		kfree(intel_dig_port);
+		kfree(intel_connector);
+	}
+}
+void intel_dp_mst_suspend(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+	/* disable MST */
+	for (i = 0; i < I915_MAX_PORTS; i++) {
+		struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i];
+		if (!intel_dig_port)
+			continue;
+		if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) {
+			if (!intel_dig_port->dp.can_mst)
+				continue;
+			if (intel_dig_port->dp.is_mst)
+				drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr);
+		}
+	}
+}
+void intel_dp_mst_resume(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+	for (i = 0; i < I915_MAX_PORTS; i++) {
+		struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i];
+		if (!intel_dig_port)
+			continue;
+		if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) {
+			int ret;
+			if (!intel_dig_port->dp.can_mst)
+				continue;
+			ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr);
+			if (ret != 0) {

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/i915/intel_dp.c – Rev 4560 → 5060