[6/6,v3] drm/i915: Enable HDMI on DDI-E

Message ID	1439798644-12653-1-git-send-email-xiong.y.zhang@intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <intel-gfx-bounces@lists.freedesktop.org> From: Xiong Zhang <xiong.y.zhang@intel.com> To: intel-gfx@lists.freedesktop.org Date: Mon, 17 Aug 2015 16:04:04 +0800 Message-Id: <1439798644-12653-1-git-send-email-xiong.y.zhang@intel.com> In-Reply-To: <20150814084200.GN17734@phenom.ffwll.local> References: <20150814084200.GN17734@phenom.ffwll.local> Subject: [Intel-gfx] [PATCH 6/6 v3] drm/i915: Enable HDMI on DDI-E Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>

Message ID

1439798644-12653-1-git-send-email-xiong.y.zhang@intel.com (mailing list archive)

State

New, archived

Headers

From: Xiong Zhang <xiong.y.zhang@intel.com>
To: intel-gfx@lists.freedesktop.org
Date: Mon, 17 Aug 2015 16:04:04 +0800
Message-Id: <1439798644-12653-1-git-send-email-xiong.y.zhang@intel.com>
In-Reply-To: <20150814084200.GN17734@phenom.ffwll.local>
References: <20150814084200.GN17734@phenom.ffwll.local>
Subject: [Intel-gfx] [PATCH 6/6 v3] drm/i915: Enable HDMI on DDI-E
Precedence: list
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>

Commit Message

Zhang, Xiong Y Aug. 17, 2015, 8:04 a.m. UTC

DDI-E doesn't have the correspondent GMBUS pin.

We rely on VBT to tell us which one it being used instead.

The DVI/HDMI on shared port couldn't exist.

This patch isn't tested without hardware wchich has HDMI
on DDI-E.

v2: fix trailing whitespace
v3: MISSING_CASE take place of BUG()

Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h   |  5 +++++
 drivers/gpu/drm/i915/intel_bios.c | 25 +++++++++++++++++++++----
 drivers/gpu/drm/i915/intel_hdmi.c | 21 +++++++++++++++++++++
 3 files changed, 47 insertions(+), 4 deletions(-)

Comments

Jani Nikula Aug. 31, 2015, 3:47 p.m. UTC | #1

On Mon, 17 Aug 2015, Xiong Zhang <xiong.y.zhang@intel.com> wrote:
> DDI-E doesn't have the correspondent GMBUS pin.
>
> We rely on VBT to tell us which one it being used instead.
>
> The DVI/HDMI on shared port couldn't exist.
>
> This patch isn't tested without hardware wchich has HDMI
> on DDI-E.
>
> v2: fix trailing whitespace
> v3: MISSING_CASE take place of BUG()
>
> Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Pushed to drm-intel-next-fixes.

BR,
Jani.

> ---
>  drivers/gpu/drm/i915/i915_drv.h   |  5 +++++
>  drivers/gpu/drm/i915/intel_bios.c | 25 +++++++++++++++++++++----
>  drivers/gpu/drm/i915/intel_hdmi.c | 21 +++++++++++++++++++++
>  3 files changed, 47 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 35192d2..22e8bf0 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1418,6 +1418,10 @@ enum modeset_restore {
>  #define DP_AUX_C 0x20
>  #define DP_AUX_D 0x30
>  
> +#define DDC_PIN_B  0x05
> +#define DDC_PIN_C  0x04
> +#define DDC_PIN_D  0x06
> +
>  struct ddi_vbt_port_info {
>  	/*
>  	 * This is an index in the HDMI/DVI DDI buffer translation table.
> @@ -1432,6 +1436,7 @@ struct ddi_vbt_port_info {
>  	uint8_t supports_dp:1;
>  
>  	uint8_t alternate_aux_channel;
> +	uint8_t alternate_ddc_pin;
>  
>  	uint8_t dp_boost_level;
>  	uint8_t hdmi_boost_level;
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index 8e46149..a2ee347 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -905,7 +905,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
>  	uint8_t hdmi_level_shift;
>  	int i, j;
>  	bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
> -	uint8_t aux_channel;
> +	uint8_t aux_channel, ddc_pin;
>  	/* Each DDI port can have more than one value on the "DVO Port" field,
>  	 * so look for all the possible values for each port and abort if more
>  	 * than one is found. */
> @@ -939,6 +939,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
>  		return;
>  
>  	aux_channel = child->raw[25];
> +	ddc_pin = child->common.ddc_pin;
>  
>  	is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
>  	is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
> @@ -970,11 +971,27 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
>  		DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
>  
>  	if (is_dvi) {
> -		if (child->common.ddc_pin == 0x05 && port != PORT_B)
> +		if (port == PORT_E) {
> +			info->alternate_ddc_pin = ddc_pin;
> +			/* if DDIE share ddc pin with other port, then
> +			 * dvi/hdmi couldn't exist on the shared port.
> +			 * Otherwise they share the same ddc bin and system
> +			 * couldn't communicate with them seperately. */
> +			if (ddc_pin == DDC_PIN_B) {
> +				dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0;
> +				dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0;
> +			} else if (ddc_pin == DDC_PIN_C) {
> +				dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0;
> +				dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0;
> +			} else if (ddc_pin == DDC_PIN_D) {
> +				dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0;
> +				dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0;
> +			}
> +		} else if (ddc_pin == DDC_PIN_B && port != PORT_B)
>  			DRM_DEBUG_KMS("Unexpected DDC pin for port B\n");
> -		if (child->common.ddc_pin == 0x04 && port != PORT_C)
> +		else if (ddc_pin == DDC_PIN_C && port != PORT_C)
>  			DRM_DEBUG_KMS("Unexpected DDC pin for port C\n");
> -		if (child->common.ddc_pin == 0x06 && port != PORT_D)
> +		else if (ddc_pin == DDC_PIN_D && port != PORT_D)
>  			DRM_DEBUG_KMS("Unexpected DDC pin for port D\n");
>  	}
>  
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index 7185062..d1a7f7b 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -1956,6 +1956,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
>  	struct drm_device *dev = intel_encoder->base.dev;
>  	struct drm_i915_private *dev_priv = dev->dev_private;
>  	enum port port = intel_dig_port->port;
> +	uint8_t alternate_ddc_pin;
>  
>  	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
>  			   DRM_MODE_CONNECTOR_HDMIA);
> @@ -1996,6 +1997,26 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
>  			intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
>  		intel_encoder->hpd_pin = HPD_PORT_D;
>  		break;
> +	case PORT_E:
> +		/* On SKL PORT E doesn't have seperate GMBUS pin
> +		 *  We rely on VBT to set a proper alternate GMBUS pin. */
> +		alternate_ddc_pin =
> +			dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin;
> +		switch (alternate_ddc_pin) {
> +		case DDC_PIN_B:
> +			intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
> +			break;
> +		case DDC_PIN_C:
> +			intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
> +			break;
> +		case DDC_PIN_D:
> +			intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
> +			break;
> +		default:
> +			MISSING_CASE(alternate_ddc_pin);
> +		}
> +		intel_encoder->hpd_pin = HPD_PORT_E;
> +		break;
>  	case PORT_A:
>  		intel_encoder->hpd_pin = HPD_PORT_A;
>  		/* Internal port only for eDP. */
> -- 
> 2.1.4
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 35192d2..22e8bf0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1418,6 +1418,10 @@  enum modeset_restore {
 #define DP_AUX_C 0x20
 #define DP_AUX_D 0x30
 
+#define DDC_PIN_B  0x05
+#define DDC_PIN_C  0x04
+#define DDC_PIN_D  0x06
+
 struct ddi_vbt_port_info {
 	/*
 	 * This is an index in the HDMI/DVI DDI buffer translation table.
@@ -1432,6 +1436,7 @@  struct ddi_vbt_port_info {
 	uint8_t supports_dp:1;
 
 	uint8_t alternate_aux_channel;
+	uint8_t alternate_ddc_pin;
 
 	uint8_t dp_boost_level;
 	uint8_t hdmi_boost_level;
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 8e46149..a2ee347 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -905,7 +905,7 @@  static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 	uint8_t hdmi_level_shift;
 	int i, j;
 	bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
-	uint8_t aux_channel;
+	uint8_t aux_channel, ddc_pin;
 	/* Each DDI port can have more than one value on the "DVO Port" field,
 	 * so look for all the possible values for each port and abort if more
 	 * than one is found. */
@@ -939,6 +939,7 @@  static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 		return;
 
 	aux_channel = child->raw[25];
+	ddc_pin = child->common.ddc_pin;
 
 	is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
 	is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
@@ -970,11 +971,27 @@  static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 		DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
 
 	if (is_dvi) {
-		if (child->common.ddc_pin == 0x05 && port != PORT_B)
+		if (port == PORT_E) {
+			info->alternate_ddc_pin = ddc_pin;
+			/* if DDIE share ddc pin with other port, then
+			 * dvi/hdmi couldn't exist on the shared port.
+			 * Otherwise they share the same ddc bin and system
+			 * couldn't communicate with them seperately. */
+			if (ddc_pin == DDC_PIN_B) {
+				dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0;
+				dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0;
+			} else if (ddc_pin == DDC_PIN_C) {
+				dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0;
+				dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0;
+			} else if (ddc_pin == DDC_PIN_D) {
+				dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0;
+				dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0;
+			}
+		} else if (ddc_pin == DDC_PIN_B && port != PORT_B)
 			DRM_DEBUG_KMS("Unexpected DDC pin for port B\n");
-		if (child->common.ddc_pin == 0x04 && port != PORT_C)
+		else if (ddc_pin == DDC_PIN_C && port != PORT_C)
 			DRM_DEBUG_KMS("Unexpected DDC pin for port C\n");
-		if (child->common.ddc_pin == 0x06 && port != PORT_D)
+		else if (ddc_pin == DDC_PIN_D && port != PORT_D)
 			DRM_DEBUG_KMS("Unexpected DDC pin for port D\n");
 	}
 
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 7185062..d1a7f7b 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1956,6 +1956,7 @@  void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
 	struct drm_device *dev = intel_encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	enum port port = intel_dig_port->port;
+	uint8_t alternate_ddc_pin;
 
 	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
 			   DRM_MODE_CONNECTOR_HDMIA);
@@ -1996,6 +1997,26 @@  void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
 			intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
 		intel_encoder->hpd_pin = HPD_PORT_D;
 		break;
+	case PORT_E:
+		/* On SKL PORT E doesn't have seperate GMBUS pin
+		 *  We rely on VBT to set a proper alternate GMBUS pin. */
+		alternate_ddc_pin =
+			dev_priv->vbt.ddi_port_info[PORT_E].alternate_ddc_pin;
+		switch (alternate_ddc_pin) {
+		case DDC_PIN_B:
+			intel_hdmi->ddc_bus = GMBUS_PIN_DPB;
+			break;
+		case DDC_PIN_C:
+			intel_hdmi->ddc_bus = GMBUS_PIN_DPC;
+			break;
+		case DDC_PIN_D:
+			intel_hdmi->ddc_bus = GMBUS_PIN_DPD;
+			break;
+		default:
+			MISSING_CASE(alternate_ddc_pin);
+		}
+		intel_encoder->hpd_pin = HPD_PORT_E;
+		break;
 	case PORT_A:
 		intel_encoder->hpd_pin = HPD_PORT_A;
 		/* Internal port only for eDP. */

[6/6,v3] drm/i915: Enable HDMI on DDI-E

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