[Intel-gfx] [PATCH 10/12] drm/i915/bios: start using the intel_bios_encoder_data directly

[Jani Nikula <jani.nikula@intel.com>]

Start using struct intel_bios_encoder_data directly. We'll start
sanitizing the child device data directly as well, instead of the cached
data in ddi_port_info[]. The one downside here is having to store a
non-const pointer back to intel_bios_encoder_data.

Eventually we'll be able to have a direct pointer from encoder to
intel_bios_encoder_data, removing the need to go through the
ddi_port_info[] array altogether. And we'll be able to remove the cached
data in ddi_port_info[].

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 37 +++++++++--------------
 drivers/gpu/drm/i915/display/intel_bios.h | 10 ++++--
 drivers/gpu/drm/i915/display/intel_ddi.c  | 15 +++++++--
 drivers/gpu/drm/i915/i915_drv.h           |  4 +--
 4 files changed, 35 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 47e9c609f82a..d26304ebc6b9 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1529,6 +1529,8 @@ static void sanitize_ddc_pin(struct drm_i915_private *i915,
 
 	p = get_port_by_ddc_pin(i915, info->alternate_ddc_pin);
 	if (p != PORT_NONE) {
+		struct child_device_config *child;
+
 		drm_dbg_kms(&i915->drm,
 			    "port %c trying to use the same DDC pin (0x%x) as port %c, "
 			    "disabling port %c DVI/HDMI support\n",
@@ -1548,9 +1550,11 @@ static void sanitize_ddc_pin(struct drm_i915_private *i915,
 		 * we must pick port E :(
 		 */
 		info = &i915->vbt.ddi_port_info[p];
+		child = &info->devdata->child;
+
+		child->device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING;
+		child->device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
 
-		info->supports_dvi = false;
-		info->supports_hdmi = false;
 		info->alternate_ddc_pin = 0;
 	}
 }
@@ -1783,20 +1787,20 @@ static void sanitize_device_type(struct intel_bios_encoder_data *devdata,
 	devdata->child.device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
 }
 
-static bool
+bool
 intel_bios_encoder_supports_dvi(const struct intel_bios_encoder_data *devdata)
 {
 	return devdata->child.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
 }
 
-static bool
+bool
 intel_bios_encoder_supports_hdmi(const struct intel_bios_encoder_data *devdata)
 {
 	return intel_bios_encoder_supports_dvi(devdata) &&
 		(devdata->child.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
 }
 
-static bool
+bool
 intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdata)
 {
 	return devdata->child.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
@@ -1838,8 +1842,6 @@ static void parse_ddi_port(struct drm_i915_private *i915,
 	is_hdmi = intel_bios_encoder_supports_hdmi(devdata);
 	is_edp = intel_bios_encoder_supports_edp(devdata);
 
-	info->supports_dvi = is_dvi;
-	info->supports_hdmi = is_hdmi;
 	info->supports_dp = is_dp;
 	info->supports_edp = is_edp;
 
@@ -2901,21 +2903,6 @@ int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder)
 	return i915->vbt.ddi_port_info[encoder->port].alternate_ddc_pin;
 }
 
-bool intel_bios_port_supports_dvi(struct drm_i915_private *i915, enum port port)
-{
-	return i915->vbt.ddi_port_info[port].supports_dvi;
-}
-
-bool intel_bios_port_supports_hdmi(struct drm_i915_private *i915, enum port port)
-{
-	return i915->vbt.ddi_port_info[port].supports_hdmi;
-}
-
-bool intel_bios_port_supports_dp(struct drm_i915_private *i915, enum port port)
-{
-	return i915->vbt.ddi_port_info[port].supports_dp;
-}
-
 bool intel_bios_port_supports_typec_usb(struct drm_i915_private *i915,
 					enum port port)
 {
@@ -2926,3 +2913,9 @@ bool intel_bios_port_supports_tbt(struct drm_i915_private *i915, enum port port)
 {
 	return i915->vbt.ddi_port_info[port].supports_tbt;
 }
+
+const struct intel_bios_encoder_data *
+intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
+{
+	return i915->vbt.ddi_port_info[port].devdata;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
index 6591cf7758f2..18b5c2976bd4 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -254,10 +254,14 @@ int intel_bios_dp_boost_level(struct intel_encoder *encoder);
 int intel_bios_hdmi_boost_level(struct intel_encoder *encoder);
 int intel_bios_dp_max_link_rate(struct intel_encoder *encoder);
 int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder);
-bool intel_bios_port_supports_dvi(struct drm_i915_private *i915, enum port port);
-bool intel_bios_port_supports_hdmi(struct drm_i915_private *i915, enum port port);
-bool intel_bios_port_supports_dp(struct drm_i915_private *i915, enum port port);
 bool intel_bios_port_supports_typec_usb(struct drm_i915_private *i915, enum port port);
 bool intel_bios_port_supports_tbt(struct drm_i915_private *i915, enum port port);
 
+const struct intel_bios_encoder_data *
+intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port);
+
+bool intel_bios_encoder_supports_dvi(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_hdmi(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdata);
+
 #endif /* _INTEL_BIOS_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index eeae78097a20..1a2f7725f8ec 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3973,6 +3973,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 {
 	struct intel_digital_port *dig_port;
 	struct intel_encoder *encoder;
+	const struct intel_bios_encoder_data *devdata;
 	bool init_hdmi, init_dp;
 	enum phy phy = intel_port_to_phy(dev_priv, port);
 
@@ -3988,9 +3989,17 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 		return;
 	}
 
-	init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
-		intel_bios_port_supports_hdmi(dev_priv, port);
-	init_dp = intel_bios_port_supports_dp(dev_priv, port);
+	devdata = intel_bios_encoder_data_lookup(dev_priv, port);
+	if (!devdata) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "VBT says port %c is not present\n",
+			    port_name(port));
+		return;
+	}
+
+	init_hdmi = intel_bios_encoder_supports_dvi(devdata) ||
+		intel_bios_encoder_supports_hdmi(devdata);
+	init_dp = intel_bios_encoder_supports_dp(devdata);
 
 	if (intel_bios_is_lspcon_present(dev_priv, port)) {
 		/*
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e2c5ba61b370..57712a617839 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -584,7 +584,7 @@ i915_fence_timeout(const struct drm_i915_private *i915)
 
 struct ddi_vbt_port_info {
 	/* Non-NULL if port present. */
-	const struct intel_bios_encoder_data *devdata;
+	struct intel_bios_encoder_data *devdata;
 
 	int max_tmds_clock;
 
@@ -592,8 +592,6 @@ struct ddi_vbt_port_info {
 	u8 hdmi_level_shift;
 	u8 hdmi_level_shift_set:1;
 
-	u8 supports_dvi:1;
-	u8 supports_hdmi:1;
 	u8 supports_dp:1;
 	u8 supports_edp:1;
 	u8 supports_typec_usb:1;
-- 
2.20.1

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