From 3792ab804dc803f8cbb167178e499f9d5d9b6310 Mon Sep 17 00:00:00 2001
From: Pier Luigi Fiorini <pierluigi.fiorini@liri.io>
Date: Wed, 14 Dec 2016 07:21:44 +0100
Subject: eglfs_kms: Decode EDID blob

Retrieve and parse EDID blob.
Return screen product information from EDID.

[ChangeLog][QPA][eglfs][kms] Add screen product information from EDID.

Change-Id: I766999afd9298e82f6147fdeba5d14757bfb4b03
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
---
 .../eglfs_kms_support/eglfs_kms_support.pro        |  2 +-
 .../eglfs_kms_support/qeglfskmsscreen.cpp          | 33 +++++++++++++++++++++-
 .../eglfs_kms_support/qeglfskmsscreen.h            |  6 ++++
 3 files changed, 39 insertions(+), 2 deletions(-)

(limited to 'src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support')

diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/eglfs_kms_support.pro b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/eglfs_kms_support.pro
index 3c0a0ce30f..88cf6db33b 100644
--- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/eglfs_kms_support.pro
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/eglfs_kms_support.pro
@@ -2,7 +2,7 @@ TARGET = QtEglFsKmsSupport
 CONFIG += no_module_headers internal_module
 load(qt_module)
 
-QT += core-private gui-private eglfsdeviceintegration-private kms_support-private
+QT += core-private gui-private eglfsdeviceintegration-private kms_support-private edid_support-private
 
 INCLUDEPATH += $$PWD/../../api
 
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.cpp
index 6c8fffd8d9..7414495f07 100644
--- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.cpp
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
+** Copyright (C) 2017 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Copyright (C) 2016 Pelagicore AG
 ** Contact: https://www.qt.io/licensing/
@@ -76,6 +76,22 @@ QEglFSKmsScreen::QEglFSKmsScreen(QKmsDevice *device, const QKmsOutput &output)
     , m_interruptHandler(new QEglFSKmsInterruptHandler(this))
 {
     m_siblings << this; // gets overridden later
+
+    if (m_output.edid_blob) {
+        QByteArray edid(reinterpret_cast<const char *>(m_output.edid_blob->data), m_output.edid_blob->length);
+        if (m_edid.parse(edid))
+            qCDebug(qLcEglfsKmsDebug, "EDID data for output \"%s\": identifier '%s', manufacturer '%s', model '%s', serial '%s', physical size: %.2fx%.2f",
+                    name().toLatin1().constData(),
+                    m_edid.identifier.toLatin1().constData(),
+                    m_edid.manufacturer.toLatin1().constData(),
+                    m_edid.model.toLatin1().constData(),
+                    m_edid.serialNumber.toLatin1().constData(),
+                    m_edid.physicalSize.width(), m_edid.physicalSize.height());
+        else
+            qCWarning(qLcEglfsKmsDebug) << "Failed to parse EDID data for output" << name();
+    } else {
+        qCWarning(qLcEglfsKmsDebug) << "No EDID data for output" << name();
+    }
 }
 
 QEglFSKmsScreen::~QEglFSKmsScreen()
@@ -146,6 +162,21 @@ QString QEglFSKmsScreen::name() const
     return m_output.name;
 }
 
+QString QEglFSKmsScreen::manufacturer() const
+{
+    return m_edid.manufacturer;
+}
+
+QString QEglFSKmsScreen::model() const
+{
+    return m_edid.model.isEmpty() ? m_edid.identifier : m_edid.model;
+}
+
+QString QEglFSKmsScreen::serialNumber() const
+{
+    return m_edid.serialNumber;
+}
+
 void QEglFSKmsScreen::destroySurface()
 {
 }
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.h b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.h
index c90e917f0a..4e09929189 100644
--- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.h
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsscreen.h
@@ -47,6 +47,7 @@
 #include <QtCore/QMutex>
 
 #include <QtKmsSupport/private/qkmsdevice_p.h>
+#include <QtEdidSupport/private/qedidparser_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -72,6 +73,10 @@ public:
 
     QString name() const override;
 
+    QString manufacturer() const override;
+    QString model() const override;
+    QString serialNumber() const override;
+
     qreal refreshRate() const override;
 
     QList<QPlatformScreen *> virtualSiblings() const override { return m_siblings; }
@@ -102,6 +107,7 @@ protected:
     QKmsDevice *m_device;
 
     QKmsOutput m_output;
+    QEdidParser m_edid;
     QPoint m_pos;
 
     QList<QPlatformScreen *> m_siblings;
-- 
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