diff mbox series

[9/9] drm/i915: Eliminate intel_dp.regs.dp_tp_{ctl, status}

Message ID 20200506112328.16562-10-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: Plumb crtc state to link training code | expand

Commit Message

Ville Syrjälä May 6, 2020, 11:23 a.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Now that we've plumbed the crtc state all the way down we can
eliminate the DP_TP_{CTL,STATUS} register offsets from intel_dp,
and instead we derive them directly from the crtc state.

And thus we can get rid of the nasty hack in intel_ddi_get_config()
which mutates intel_dp during the readout.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c      | 103 ++++++++++--------
 drivers/gpu/drm/i915/display/intel_ddi.h      |   5 +
 .../drm/i915/display/intel_display_types.h    |   8 --
 drivers/gpu/drm/i915/display/intel_dp.c       |   2 -
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  10 +-
 5 files changed, 68 insertions(+), 60 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 77d2021d0bcd..8e7caf78ea09 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3029,6 +3029,37 @@  icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port,
 	}
 }
 
+static enum transcoder
+tgl_dp_tp_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
+		return crtc_state->mst_master_transcoder;
+	else
+		return crtc_state->cpu_transcoder;
+}
+
+i915_reg_t dp_tp_ctl_reg(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (INTEL_GEN(dev_priv) >= 12)
+		return TGL_DP_TP_CTL(tgl_dp_tp_transcoder(crtc_state));
+	else
+		return DP_TP_CTL(encoder->port);
+}
+
+i915_reg_t dp_tp_status_reg(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (INTEL_GEN(dev_priv) >= 12)
+		return TGL_DP_TP_STATUS(tgl_dp_tp_transcoder(crtc_state));
+	else
+		return DP_TP_STATUS(encoder->port);
+}
+
 static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,
 					const struct intel_crtc_state *crtc_state)
 {
@@ -3053,11 +3084,12 @@  static void intel_ddi_enable_fec(struct intel_encoder *encoder,
 		return;
 
 	intel_dp = enc_to_intel_dp(encoder);
-	val = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 	val |= DP_TP_CTL_FEC_ENABLE;
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, val);
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
 
-	if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
+	if (intel_de_wait_for_set(dev_priv,
+				  dp_tp_status_reg(encoder, crtc_state),
 				  DP_TP_STATUS_FEC_ENABLE_LIVE, 1))
 		drm_err(&dev_priv->drm,
 			"Timed out waiting for FEC Enable Status\n");
@@ -3074,10 +3106,10 @@  static void intel_ddi_disable_fec_state(struct intel_encoder *encoder,
 		return;
 
 	intel_dp = enc_to_intel_dp(encoder);
-	val = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 	val &= ~DP_TP_CTL_FEC_ENABLE;
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, val);
-	intel_de_posting_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
+	intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 }
 
 static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
@@ -3091,15 +3123,11 @@  static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
 	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
 	bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
 	int level = intel_ddi_dp_level(intel_dp);
-	enum transcoder transcoder = crtc_state->cpu_transcoder;
 
 	intel_dp_set_link_params(intel_dp,
 				 crtc_state->port_clock,
 				 crtc_state->lane_count);
 
-	intel_dp->regs.dp_tp_ctl = TGL_DP_TP_CTL(transcoder);
-	intel_dp->regs.dp_tp_status = TGL_DP_TP_STATUS(transcoder);
-
 	/*
 	 * 1. Enable Power Wells
 	 *
@@ -3418,12 +3446,10 @@  static void intel_disable_ddi_buf(struct intel_encoder *encoder,
 	}
 
 	if (intel_crtc_has_dp_encoder(crtc_state)) {
-		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-
-		val = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+		val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 		val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
 		val |= DP_TP_CTL_LINK_TRAIN_PAT1;
-		intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, val);
+		intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
 	}
 
 	/* Disable FEC in DP Sink */
@@ -3915,14 +3941,13 @@  intel_ddi_pre_pll_enable(struct intel_atomic_state *state,
 static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
 					   const struct intel_crtc_state *crtc_state)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv =
-		to_i915(intel_dig_port->base.base.dev);
-	enum port port = intel_dig_port->base.port;
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
 	u32 dp_tp_ctl, ddi_buf_ctl;
 	bool wait = false;
 
-	dp_tp_ctl = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	dp_tp_ctl = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 
 	if (dp_tp_ctl & DP_TP_CTL_ENABLE) {
 		ddi_buf_ctl = intel_de_read(dev_priv, DDI_BUF_CTL(port));
@@ -3934,8 +3959,8 @@  static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
 
 		dp_tp_ctl &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
 		dp_tp_ctl |= DP_TP_CTL_LINK_TRAIN_PAT1;
-		intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, dp_tp_ctl);
-		intel_de_posting_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+		intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
+		intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 
 		if (wait)
 			intel_wait_ddi_buf_idle(dev_priv, port);
@@ -3950,8 +3975,8 @@  static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
 		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
 			dp_tp_ctl |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
 	}
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, dp_tp_ctl);
-	intel_de_posting_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
+	intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 
 	intel_dp->DP |= DDI_BUF_CTL_ENABLE;
 	intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
@@ -3964,12 +3989,13 @@  static void intel_ddi_set_link_train(struct intel_dp *intel_dp,
 				     const struct intel_crtc_state *crtc_state,
 				     u8 dp_train_pat)
 {
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	u8 train_pat_mask = drm_dp_training_pattern_mask(intel_dp->dpcd);
 	enum port port = dp_to_dig_port(intel_dp)->base.port;
 	u32 temp;
 
-	temp = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	temp = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 
 	if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE)
 		temp |= DP_TP_CTL_SCRAMBLE_DISABLE;
@@ -3995,7 +4021,7 @@  static void intel_ddi_set_link_train(struct intel_dp *intel_dp,
 		break;
 	}
 
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, temp);
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), temp);
 
 	intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
 	intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
@@ -4009,10 +4035,10 @@  static void intel_ddi_set_idle_link_train(struct intel_dp *intel_dp,
 	enum port port = encoder->port;
 	u32 val;
 
-	val = intel_de_read(dev_priv, intel_dp->regs.dp_tp_ctl);
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 	val &= ~DP_TP_CTL_LINK_TRAIN_MASK;
 	val |= DP_TP_CTL_LINK_TRAIN_IDLE;
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_ctl, val);
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
 
 	/*
 	 * Until TGL on PORT_A we can have only eDP in SST mode. There the only
@@ -4024,7 +4050,8 @@  static void intel_ddi_set_idle_link_train(struct intel_dp *intel_dp,
 	if (port == PORT_A && INTEL_GEN(dev_priv) < 12)
 		return;
 
-	if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
+	if (intel_de_wait_for_set(dev_priv,
+				  dp_tp_status_reg(encoder, crtc_state),
 				  DP_TP_STATUS_IDLE_DONE, 1))
 		drm_err(&dev_priv->drm,
 			"Timed out waiting for DP idle patterns\n");
@@ -4122,18 +4149,12 @@  void intel_ddi_get_config(struct intel_encoder *encoder,
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc);
 	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 	u32 temp, flags = 0;
 
 	/* XXX: DSI transcoder paranoia */
 	if (drm_WARN_ON(&dev_priv->drm, transcoder_is_dsi(cpu_transcoder)))
 		return;
 
-	if (INTEL_GEN(dev_priv) >= 12) {
-		intel_dp->regs.dp_tp_ctl = TGL_DP_TP_CTL(cpu_transcoder);
-		intel_dp->regs.dp_tp_status = TGL_DP_TP_STATUS(cpu_transcoder);
-	}
-
 	intel_dsc_get_config(encoder, pipe_config);
 
 	temp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
@@ -4197,12 +4218,7 @@  void intel_ddi_get_config(struct intel_encoder *encoder,
 		intel_dp_get_m_n(intel_crtc, pipe_config);
 
 		if (INTEL_GEN(dev_priv) >= 11) {
-			i915_reg_t dp_tp_ctl;
-
-			if (IS_GEN(dev_priv, 11))
-				dp_tp_ctl = DP_TP_CTL(encoder->port);
-			else
-				dp_tp_ctl = TGL_DP_TP_CTL(pipe_config->cpu_transcoder);
+			i915_reg_t dp_tp_ctl = dp_tp_ctl_reg(encoder, pipe_config);
 
 			pipe_config->fec_enable =
 				intel_de_read(dev_priv, dp_tp_ctl) & DP_TP_CTL_FEC_ENABLE;
@@ -4491,11 +4507,6 @@  intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port)
 	intel_dig_port->dp.voltage_max = intel_ddi_dp_voltage_max;
 	intel_dig_port->dp.preemph_max = intel_ddi_dp_preemph_max;
 
-	if (INTEL_GEN(dev_priv) < 12) {
-		intel_dig_port->dp.regs.dp_tp_ctl = DP_TP_CTL(port);
-		intel_dig_port->dp.regs.dp_tp_status = DP_TP_STATUS(port);
-	}
-
 	if (!intel_dp_init_connector(intel_dig_port, connector)) {
 		kfree(connector);
 		return NULL;
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h
index 7a06bb942d21..c4c90815c5f6 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.h
+++ b/drivers/gpu/drm/i915/display/intel_ddi.h
@@ -7,6 +7,7 @@ 
 #define __INTEL_DDI_H__
 
 #include "intel_display.h"
+#include "i915_reg.h"
 
 struct drm_connector_state;
 struct drm_i915_private;
@@ -17,6 +18,10 @@  struct intel_dp;
 struct intel_dpll_hw_state;
 struct intel_encoder;
 
+i915_reg_t dp_tp_ctl_reg(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state);
+i915_reg_t dp_tp_status_reg(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
 void intel_ddi_fdi_post_disable(struct intel_atomic_state *state,
 				struct intel_encoder *intel_encoder,
 				const struct intel_crtc_state *old_crtc_state,
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index b7177134acc3..97ca779f7470 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1338,14 +1338,6 @@  struct intel_dp {
 	bool is_mst;
 	int active_mst_links;
 
-	/*
-	 * DP_TP_* registers may be either on port or transcoder register space.
-	 */
-	struct {
-		i915_reg_t dp_tp_ctl;
-		i915_reg_t dp_tp_status;
-	} regs;
-
 	/* connector directly attached - won't be use for modeset in mst world */
 	struct intel_connector *attached_connector;
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 562cb560d6c0..c613fc087201 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -8504,8 +8504,6 @@  bool intel_dp_init(struct drm_i915_private *dev_priv,
 
 	intel_dig_port->dp.output_reg = output_reg;
 	intel_dig_port->max_lanes = 4;
-	intel_dig_port->dp.regs.dp_tp_ctl = DP_TP_CTL(port);
-	intel_dig_port->dp.regs.dp_tp_status = DP_TP_STATUS(port);
 
 	intel_encoder->type = INTEL_OUTPUT_DP;
 	intel_encoder->power_domain = intel_port_to_power_domain(port);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 4d2384650383..9a05200a74f4 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -376,7 +376,8 @@  static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
 		       TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder),
 		       val);
 
-	if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
+	if (intel_de_wait_for_set(dev_priv,
+				  dp_tp_ctl_reg(encoder, old_crtc_state),
 				  DP_TP_STATUS_ACT_SENT, 1))
 		drm_err(&dev_priv->drm,
 			"Timed out waiting for ACT sent when disabling\n");
@@ -476,8 +477,8 @@  static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
 		drm_err(&dev_priv->drm, "failed to allocate vcpi\n");
 
 	intel_dp->active_mst_links++;
-	temp = intel_de_read(dev_priv, intel_dp->regs.dp_tp_status);
-	intel_de_write(dev_priv, intel_dp->regs.dp_tp_status, temp);
+	temp = intel_de_read(dev_priv, dp_tp_status_reg(encoder, pipe_config));
+	intel_de_write(dev_priv, dp_tp_status_reg(encoder, pipe_config), temp);
 
 	ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
 
@@ -517,7 +518,8 @@  static void intel_mst_enable_dp(struct intel_atomic_state *state,
 	drm_dbg_kms(&dev_priv->drm, "active links %d\n",
 		    intel_dp->active_mst_links);
 
-	if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
+	if (intel_de_wait_for_set(dev_priv,
+				  dp_tp_status_reg(encoder, pipe_config),
 				  DP_TP_STATUS_ACT_SENT, 1))
 		drm_err(&dev_priv->drm, "Timed out waiting for ACT sent\n");