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Mon, 5 Aug 2019 09:52:18 +0000 From: Mihail Atanassov To: "dri-devel@lists.freedesktop.org" CC: Mihail Atanassov , "james qian wang (Arm Technology China)" , Liviu Dudau , Brian Starkey , David Airlie , Daniel Vetter , "linux-kernel@vger.kernel.org" Subject: [PATCH v2] drm/komeda: Add support for 'memory-region' DT node property Thread-Topic: [PATCH v2] drm/komeda: Add support for 'memory-region' DT node property Thread-Index: AQHVS3N34kDp/cF7tkmzeLrHpfGDHA== Date: Mon, 5 Aug 2019 09:52:17 +0000 Message-ID: <20190805095155.17999-1-mihail.atanassov@arm.com> References: <20190802143951.4436-1-mihail.atanassov@arm.com> In-Reply-To: <20190802143951.4436-1-mihail.atanassov@arm.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [217.140.106.52] x-clientproxiedby: LO2P265CA0051.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:60::15) To VI1PR08MB4078.eurprd08.prod.outlook.com (2603:10a6:803:e5::28) x-mailer: git-send-email 2.22.0 authentication-results: spf=none (sender IP is ) smtp.mailfrom=Mihail.Atanassov@arm.com; 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received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: VEN3eukLl6Si86GSfhNhxZw3MASEtEIDDUSbBRBq08G+3LlX1tEhwClc8l4VLfqWsIaHRZrPZkAYV4P4TvMlqs3Pk9HSxc0JmqnaPNO1O90t0Rer2ddOle5GQTylgrHvnO+pD2Qf/0PueUlgRHiqCCPCwiOY8Dygu6dzADgNLdhHprX2qwCeNo85vul9etL317339zPbPaLvEe94tosK9sltDykLf684Y2ok7fjUtd0mYqqo858bxXxxNRExbQRcLw6I6SFp4vm7epBmYDU3jyRlLShk/PLR4Kkzd/D5Yxie8l5kya2+8P54I8ltHpvKp31ltzqkg9Yy15kbOldNaAnmi6SQ2iUgbLo6P1EGAOEQTpNDrCpY5Kxn42VUP0g9NEXhqcqklijR/hckoHY6bW8MvupDCfBcpEvHRYx/Ey0= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: 46cbcb7b-5fa8-4153-4278-08d7198a9a10 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Aug 2019 09:52:17.9311 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Mihail.Atanassov@arm.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB3520 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The 'memory-region' property of the komeda display driver DT binding allows the use of a 'reserved-memory' node for buffer allocations. Add the requisite of_reserved_mem_device_{init,release} calls to actually make use of the memory if present. Changes since v1: - Move handling inside komeda_parse_dt Signed-off-by: Mihail Atanassov --- drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/= drm/arm/display/komeda/komeda_dev.c index 1ff7f4b2c620..0142ee991957 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #ifdef CONFIG_DEBUG_FS @@ -146,6 +147,12 @@ static int komeda_parse_dt(struct device *dev, struct = komeda_dev *mdev) return mdev->irq; } +/* Get the optional framebuffer memory resource */ +ret =3D of_reserved_mem_device_init(dev); +if (ret && ret !=3D -ENODEV) +return ret; +ret =3D 0; + for_each_available_child_of_node(np, child) { if (of_node_cmp(child->name, "pipeline") =3D=3D 0) { ret =3D komeda_parse_pipe_dt(mdev, child); @@ -292,6 +299,8 @@ void komeda_dev_destroy(struct komeda_dev *mdev) mdev->n_pipelines =3D 0; +of_reserved_mem_device_release(dev); + if (funcs && funcs->cleanup) funcs->cleanup(mdev); -- 2.22.0 IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. 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