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Tue, 6 Sep 2022 07:47:41 -0700 From: Akhil R To: , , , , , , , , , , , CC: Subject: [PATCH v2 1/3] i2c: tegra: Add GPCDMA support Date: Tue, 6 Sep 2022 20:17:14 +0530 Message-ID: <20220906144716.16274-2-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220906144716.16274-1-akhilrajeev@nvidia.com> References: <20220906144716.16274-1-akhilrajeev@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: c557ecef-edec-4996-300d-08da9016c2fb X-MS-TrafficTypeDiagnostic: MN2PR12MB4487:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230016)(4636009)(346002)(376002)(396003)(136003)(39860400002)(40470700004)(36840700001)(46966006)(426003)(82310400005)(47076005)(336012)(316002)(40460700003)(82740400003)(36756003)(110136005)(186003)(1076003)(86362001)(2616005)(83380400001)(4326008)(40480700001)(70586007)(70206006)(8676002)(7696005)(81166007)(26005)(6666004)(8936002)(5660300002)(7416002)(2906002)(36860700001)(478600001)(41300700001)(356005)(107886003)(921005)(83996005)(36900700001)(2101003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2022 14:47:46.0018 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c557ecef-edec-4996-300d-08da9016c2fb X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT062.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4487 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable support for GPCDMA, which is used in I2C controllers in Tegra 186 and above. The chips before that used APB DMA. This change works under the presumption that all chips apart from those supporting APB DMA is using GPCDMA. Signed-off-by: Akhil R --- drivers/i2c/busses/i2c-tegra.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 031c78ac42e6..954022c04cc4 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -443,11 +443,16 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev) u32 *dma_buf; int err; - if (!i2c_dev->hw->has_apb_dma || i2c_dev->is_vi) + if (i2c_dev->is_vi) return 0; - if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) { - dev_dbg(i2c_dev->dev, "DMA support not enabled\n"); + if (!i2c_dev->hw->has_apb_dma) { + if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) { + dev_dbg(i2c_dev->dev, "APB DMA support not enabled\n"); + return 0; + } + } else if (!IS_ENABLED(CONFIG_TEGRA186_GPC_DMA)) { + dev_dbg(i2c_dev->dev, "GPC DMA support not enabled\n"); return 0; } -- 2.17.1