diff mbox

[v2,3/4] drm/i915: Store aux power domain in intel_dp

Message ID 20170203140316.20792-3-ander.conselvan.de.oliveira@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ander Conselvan de Oliveira Feb. 3, 2017, 2:03 p.m. UTC 
The aux power domain only makes sense in the DP code. Storing it in
struct intel_dp avoids some indirection.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 50 -----------------------------
 drivers/gpu/drm/i915/intel_dp.c      | 61 ++++++++++++++----------------------
 drivers/gpu/drm/i915/intel_drv.h     |  3 +-
 3 files changed, 24 insertions(+), 90 deletions(-)

Comments

Jani Nikula Feb. 3, 2017, 2:32 p.m. UTC | #1 
On Fri, 03 Feb 2017, Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> wrote:
> The aux power domain only makes sense in the DP code. Storing it in
> struct intel_dp avoids some indirection.

This seems to make a whole lot of sense. I've just got one detail I
wanted to track down but don't have time for it now:

> -	case INTEL_OUTPUT_DP:
> -	case INTEL_OUTPUT_EDP:
> -		intel_dig_port = enc_to_dig_port(&intel_encoder->base);
> -		return port_to_aux_power_domain(intel_dig_port->port);
> -	case INTEL_OUTPUT_DP_MST:
> -		intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
> -		return port_to_aux_power_domain(intel_dig_port->port);

Is the difference between DP and DP MST not significant, don't we need
to take it into account? Or does it go away with avoiding the
indirection?

BR,
Jani.
Ander Conselvan de Oliveira Feb. 6, 2017, 7:41 a.m. UTC | #2 
On Fri, 2017-02-03 at 16:32 +0200, Jani Nikula wrote:
> On Fri, 03 Feb 2017, Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@
> intel.com> wrote:
> > The aux power domain only makes sense in the DP code. Storing it in
> > struct intel_dp avoids some indirection.
> 
> This seems to make a whole lot of sense. I've just got one detail I
> wanted to track down but don't have time for it now:
> 
> > -	case INTEL_OUTPUT_DP:
> > -	case INTEL_OUTPUT_EDP:
> > -		intel_dig_port = enc_to_dig_port(&intel_encoder->base);
> > -		return port_to_aux_power_domain(intel_dig_port->port);
> > -	case INTEL_OUTPUT_DP_MST:
> > -		intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
> > -		return port_to_aux_power_domain(intel_dig_port->port);
> 
> Is the difference between DP and DP MST not significant, don't we need
> to take it into account? Or does it go away with avoiding the
> indirection?

This goes away with avoiding the indirection. The primary field of an MST
encoder points to "real" struct intel_digital_port, whose intel_dp struct will
have aux_power_domain properly initialized. Moreover, the MST code never 
references the AUX power domains.

Ander
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 88689a0..f89372f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5649,26 +5649,6 @@  static enum intel_display_power_domain port_to_power_domain(enum port port)
 	}
 }
 
-static enum intel_display_power_domain port_to_aux_power_domain(enum port port)
-{
-	switch (port) {
-	case PORT_A:
-		return POWER_DOMAIN_AUX_A;
-	case PORT_B:
-		return POWER_DOMAIN_AUX_B;
-	case PORT_C:
-		return POWER_DOMAIN_AUX_C;
-	case PORT_D:
-		return POWER_DOMAIN_AUX_D;
-	case PORT_E:
-		/* FIXME: Check VBT for actual wiring of PORT E */
-		return POWER_DOMAIN_AUX_D;
-	default:
-		MISSING_CASE(port);
-		return POWER_DOMAIN_AUX_A;
-	}
-}
-
 enum intel_display_power_domain
 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
 {
@@ -5696,36 +5676,6 @@  intel_display_port_power_domain(struct intel_encoder *intel_encoder)
 	}
 }
 
-enum intel_display_power_domain
-intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
-{
-	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
-	struct intel_digital_port *intel_dig_port;
-
-	switch (intel_encoder->type) {
-	case INTEL_OUTPUT_UNKNOWN:
-	case INTEL_OUTPUT_HDMI:
-		/*
-		 * Only DDI platforms should ever use these output types.
-		 * We can get here after the HDMI detect code has already set
-		 * the type of the shared encoder. Since we can't be sure
-		 * what's the status of the given connectors, play safe and
-		 * run the DP detection too.
-		 */
-		WARN_ON_ONCE(!HAS_DDI(dev_priv));
-	case INTEL_OUTPUT_DP:
-	case INTEL_OUTPUT_EDP:
-		intel_dig_port = enc_to_dig_port(&intel_encoder->base);
-		return port_to_aux_power_domain(intel_dig_port->port);
-	case INTEL_OUTPUT_DP_MST:
-		intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
-		return port_to_aux_power_domain(intel_dig_port->port);
-	default:
-		MISSING_CASE(intel_encoder->type);
-		return POWER_DOMAIN_AUX_A;
-	}
-}
-
 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc,
 					    struct intel_crtc_state *crtc_state)
 {
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 5231965..06f18c0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -396,14 +396,12 @@  static void pps_lock(struct intel_dp *intel_dp)
 	struct intel_encoder *encoder = &intel_dig_port->base;
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 
 	/*
 	 * See vlv_power_sequencer_reset() why we need
 	 * a power domain reference here.
 	 */
-	power_domain = intel_display_port_aux_power_domain(encoder);
-	intel_display_power_get(dev_priv, power_domain);
+	intel_display_power_get(dev_priv, intel_dp->aux_power_domain);
 
 	mutex_lock(&dev_priv->pps_mutex);
 }
@@ -414,12 +412,10 @@  static void pps_unlock(struct intel_dp *intel_dp)
 	struct intel_encoder *encoder = &intel_dig_port->base;
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 
 	mutex_unlock(&dev_priv->pps_mutex);
 
-	power_domain = intel_display_port_aux_power_domain(encoder);
-	intel_display_power_put(dev_priv, power_domain);
+	intel_display_power_put(dev_priv, intel_dp->aux_power_domain);
 }
 
 static void
@@ -2005,9 +2001,7 @@  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 intel_encoder *intel_encoder = &intel_dig_port->base;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 	u32 pp;
 	i915_reg_t pp_stat_reg, pp_ctrl_reg;
 	bool need_to_disable = !intel_dp->want_panel_vdd;
@@ -2023,8 +2017,7 @@  static bool edp_panel_vdd_on(struct intel_dp *intel_dp)
 	if (edp_have_panel_vdd(intel_dp))
 		return need_to_disable;
 
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_get(dev_priv, power_domain);
+	intel_display_power_get(dev_priv, intel_dp->aux_power_domain);
 
 	DRM_DEBUG_KMS("Turning eDP port %c VDD on\n",
 		      port_name(intel_dig_port->port));
@@ -2082,8 +2075,6 @@  static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	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;
 	u32 pp;
 	i915_reg_t pp_stat_reg, pp_ctrl_reg;
 
@@ -2113,8 +2104,7 @@  static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp)
 	if ((pp & PANEL_POWER_ON) == 0)
 		intel_dp->panel_power_off_time = ktime_get_boottime();
 
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_put(dev_priv, power_domain);
+	intel_display_power_put(dev_priv, intel_dp->aux_power_domain);
 }
 
 static void edp_panel_vdd_work(struct work_struct *__work)
@@ -2227,11 +2217,8 @@  void intel_edp_panel_on(struct intel_dp *intel_dp)
 
 static void edp_panel_off(struct intel_dp *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_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 	u32 pp;
 	i915_reg_t pp_ctrl_reg;
 
@@ -2263,8 +2250,7 @@  static void edp_panel_off(struct intel_dp *intel_dp)
 	wait_panel_off(intel_dp);
 
 	/* We got a reference when we enabled the VDD. */
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_put(dev_priv, power_domain);
+	intel_display_power_put(dev_priv, intel_dp->aux_power_domain);
 }
 
 void intel_edp_panel_off(struct intel_dp *intel_dp)
@@ -4587,11 +4573,9 @@  intel_dp_long_pulse(struct intel_connector *intel_connector)
 	struct intel_encoder *intel_encoder = &intel_dig_port->base;
 	struct drm_device *dev = connector->dev;
 	enum drm_connector_status status;
-	enum intel_display_power_domain power_domain;
 	u8 sink_irq_vector = 0;
 
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_get(to_i915(dev), power_domain);
+	intel_display_power_get(to_i915(dev), intel_dp->aux_power_domain);
 
 	/* Can't disconnect eDP, but you can close the lid... */
 	if (is_edp(intel_dp))
@@ -4688,7 +4672,7 @@  intel_dp_long_pulse(struct intel_connector *intel_connector)
 	if (status != connector_status_connected && !intel_dp->is_mst)
 		intel_dp_unset_edid(intel_dp);
 
-	intel_display_power_put(to_i915(dev), power_domain);
+	intel_display_power_put(to_i915(dev), intel_dp->aux_power_domain);
 	return status;
 }
 
@@ -4716,7 +4700,6 @@  intel_dp_force(struct drm_connector *connector)
 	struct intel_dp *intel_dp = intel_attached_dp(connector);
 	struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
 	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
-	enum intel_display_power_domain power_domain;
 
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
 		      connector->base.id, connector->name);
@@ -4725,12 +4708,11 @@  intel_dp_force(struct drm_connector *connector)
 	if (connector->status != connector_status_connected)
 		return;
 
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_get(dev_priv, power_domain);
+	intel_display_power_get(dev_priv, intel_dp->aux_power_domain);
 
 	intel_dp_set_edid(intel_dp);
 
-	intel_display_power_put(dev_priv, power_domain);
+	intel_display_power_put(dev_priv, intel_dp->aux_power_domain);
 
 	if (intel_encoder->type != INTEL_OUTPUT_EDP)
 		intel_encoder->type = INTEL_OUTPUT_DP;
@@ -4965,7 +4947,6 @@  static void intel_edp_panel_vdd_sanitize(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;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
@@ -4979,8 +4960,7 @@  static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp)
 	 * indefinitely.
 	 */
 	DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n");
-	power_domain = intel_display_port_aux_power_domain(&intel_dig_port->base);
-	intel_display_power_get(dev_priv, power_domain);
+	intel_display_power_get(dev_priv, intel_dp->aux_power_domain);
 
 	edp_panel_vdd_schedule_off(intel_dp);
 }
@@ -5052,10 +5032,8 @@  enum irqreturn
 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 = to_i915(dev);
-	enum intel_display_power_domain power_domain;
 	enum irqreturn ret = IRQ_NONE;
 
 	if (intel_dig_port->base.type != INTEL_OUTPUT_EDP &&
@@ -5083,8 +5061,7 @@  intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 		return IRQ_NONE;
 	}
 
-	power_domain = intel_display_port_aux_power_domain(intel_encoder);
-	intel_display_power_get(dev_priv, power_domain);
+	intel_display_power_get(dev_priv, intel_dp->aux_power_domain);
 
 	if (intel_dp->is_mst) {
 		if (intel_dp_check_mst_status(intel_dp) == -EINVAL) {
@@ -5112,7 +5089,7 @@  intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 	ret = IRQ_HANDLED;
 
 put_power:
-	intel_display_power_put(dev_priv, power_domain);
+	intel_display_power_put(dev_priv, intel_dp->aux_power_domain);
 
 	return ret;
 }
@@ -5903,27 +5880,35 @@  static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 	return false;
 }
 
+/* Set up the hotplug pin and aux power domain. */
 static void
 intel_dp_init_connector_port_info(struct intel_digital_port *intel_dig_port)
 {
 	struct intel_encoder *encoder = &intel_dig_port->base;
+	struct intel_dp *intel_dp = &intel_dig_port->dp;
 
-	/* Set up the hotplug pin. */
 	switch (intel_dig_port->port) {
 	case PORT_A:
 		encoder->hpd_pin = HPD_PORT_A;
+		intel_dp->aux_power_domain = POWER_DOMAIN_AUX_A;
 		break;
 	case PORT_B:
 		encoder->hpd_pin = HPD_PORT_B;
+		intel_dp->aux_power_domain = POWER_DOMAIN_AUX_B;
 		break;
 	case PORT_C:
 		encoder->hpd_pin = HPD_PORT_C;
+		intel_dp->aux_power_domain = POWER_DOMAIN_AUX_C;
 		break;
 	case PORT_D:
 		encoder->hpd_pin = HPD_PORT_D;
+		intel_dp->aux_power_domain = POWER_DOMAIN_AUX_D;
 		break;
 	case PORT_E:
 		encoder->hpd_pin = HPD_PORT_E;
+
+		/* FIXME: Check VBT for actual wiring of PORT E */
+		intel_dp->aux_power_domain = POWER_DOMAIN_AUX_D;
 		break;
 	default:
 		MISSING_CASE(intel_dig_port->port);
@@ -6003,6 +5988,8 @@  intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	connector->interlace_allowed = true;
 	connector->doublescan_allowed = 0;
 
+	intel_dp_init_connector_port_info(intel_dig_port);
+
 	intel_dp_aux_init(intel_dp);
 
 	INIT_DELAYED_WORK(&intel_dp->panel_vdd_work,
@@ -6015,8 +6002,6 @@  intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	else
 		intel_connector->get_hw_state = intel_connector_get_hw_state;
 
-	intel_dp_init_connector_port_info(intel_dig_port);
-
 	/* init MST on ports that can support it */
 	if (HAS_DP_MST(dev_priv) && !is_edp(intel_dp) &&
 	    (port == PORT_B || port == PORT_C || port == PORT_D))
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 393f243..41a69c2 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -940,6 +940,7 @@  struct intel_dp {
 	/* sink or branch descriptor */
 	struct intel_dp_desc desc;
 	struct drm_dp_aux aux;
+	enum intel_display_power_domain aux_power_domain;
 	uint8_t train_set[4];
 	int panel_power_up_delay;
 	int panel_power_down_delay;
@@ -1402,8 +1403,6 @@  void hsw_enable_ips(struct intel_crtc *crtc);
 void hsw_disable_ips(struct intel_crtc *crtc);
 enum intel_display_power_domain
 intel_display_port_power_domain(struct intel_encoder *intel_encoder);
-enum intel_display_power_domain
-intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder);
 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
 				 struct intel_crtc_state *pipe_config);