Re: [PATCH] drm/i915/bxt: Use intel_encoder->hpd_pin to check live status

From: "Jindal, Sonika" <sonika.jindal@intel.com>
To: Rodrigo Vivi <rodrigo.vivi@gmail.com>,
	"intel-gfx@lists.freedesktop.org"
	<intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH] drm/i915/bxt: Use intel_encoder->hpd_pin to check live status
Date: Sat, 12 Sep 2015 12:02:29 +0000	[thread overview]
Message-ID: <000C66961D35964B9714611E548C10AD0C2CC12C@BGSMSX104.gar.corp.intel.com> (raw)
In-Reply-To: <CABVU7+u8yGQAbwj7PjPW2TraT2-fCBRwQSGBvS-Xij0RX+9Y4w@mail.gmail.com>


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Thanks Rodrigo.
This is always true. The hpd_pin is the right pin which we set for particular port. So no fallback needed.

Regards,
Sonika

From: Rodrigo Vivi [mailto:rodrigo.vivi@gmail.com]
Sent: Friday, September 11, 2015 11:31 PM
To: Jindal, Sonika; intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915/bxt: Use intel_encoder->hpd_pin to check live status


On Fri, Sep 11, 2015 at 4:40 AM Sonika Jindal <sonika.jindal@intel.com<mailto:sonika.jindal@intel.com>> wrote:
Using intel_encoder's hpd_pin to check the live status
because of BXT A0/A1 WA for HPD pins and hpd_pin contains the
updated pin for the corresponding port.

It makes sense, but is it always true? or we should have a fallback to intel_dig_port->port in some case or in some stepping after A0/A1?

With this clarified feel free to use:
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com<mailto:rodrigo.vivi@intel.com>>


Signed-off-by: Sonika Jindal <sonika.jindal@intel.com<mailto:sonika.jindal@intel.com>>
---
 drivers/gpu/drm/i915/intel_dp.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 796f930..bf17030 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4663,11 +4663,14 @@ static bool vlv_digital_port_connected(struct drm_i915_private *dev_priv,
 }

 static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv,
-                                      struct intel_digital_port *port)
+                                      struct intel_digital_port *intel_dig_port)
 {
+       struct intel_encoder *intel_encoder = &intel_dig_port->base;
+       enum port port;
        u32 bit;

-       switch (port->port) {
+       intel_hpd_pin_to_port(intel_encoder->hpd_pin, &port);
+       switch (port) {
        case PORT_A:
                bit = BXT_DE_PORT_HP_DDIA;
                break;
@@ -4678,7 +4681,7 @@ static bool bxt_digital_port_connected(struct drm_i915_private *dev_priv,
                bit = BXT_DE_PORT_HP_DDIC;
                break;
        default:
-               MISSING_CASE(port->port);
+               MISSING_CASE(port);
                return false;
        }

--
1.7.10.4

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