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Fri, 22 Apr 2022 14:37:24 +0000 From: Frank Li To: gustavo.pimentel@synopsys.com, hongxing.zhu@nxp.com, l.stach@pengutronix.de, linux-imx@nxp.com, linux-pci@vger.kernel.org, dmaengine@vger.kernel.org, fancer.lancer@gmail.com, lznuaa@gmail.com, helgaas@kernel.org Cc: vkoul@kernel.org, lorenzo.pieralisi@arm.com, robh@kernel.org, kw@linux.com, bhelgaas@google.com, manivannan.sadhasivam@linaro.org, Sergey.Semin@baikalelectronics.ru Subject: [PATCH v9 8/9] dmaengine: dw-edma: Add DW_EDMA_CHIP_32BIT_DBI for chip specific flags Date: Fri, 22 Apr 2022 09:36:42 -0500 Message-Id: <20220422143643.727871-9-Frank.Li@nxp.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422143643.727871-1-Frank.Li@nxp.com> References: <20220422143643.727871-1-Frank.Li@nxp.com> X-ClientProxiedBy: SN7PR04CA0063.namprd04.prod.outlook.com (2603:10b6:806:121::8) To PAXPR04MB9186.eurprd04.prod.outlook.com (2603:10a6:102:232::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 995a1d85-317b-4858-cb59-08da246d9db9 X-MS-TrafficTypeDiagnostic: AM5PR0401MB2644:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Frank Li Reviewed-by: Serge Semin Reviewed-by: Manivannan Sadhasivam --- Change from v6 to v9 - none Change from v5 to v6 - use enum instead of define New patch at v5 - fix kernel test robot build error drivers/dma/dw-edma/dw-edma-v0-core.c | 13 ++++++++----- include/linux/dma/edma.h | 2 ++ 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c index 2ab1059a3de1e..2d3f74ccc340a 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-core.c +++ b/drivers/dma/dw-edma/dw-edma-v0-core.c @@ -417,15 +417,18 @@ void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) SET_CH_32(dw, chan->dir, chan->id, ch_control1, (DW_EDMA_V0_CCS | DW_EDMA_V0_LLE)); /* Linked list */ - #ifdef CONFIG_64BIT - SET_CH_64(dw, chan->dir, chan->id, llp.reg, - chunk->ll_region.paddr); - #else /* CONFIG_64BIT */ + if ((chan->dw->chip->flags & DW_EDMA_CHIP_32BIT_DBI) || + !IS_ENABLED(CONFIG_64BIT)) { SET_CH_32(dw, chan->dir, chan->id, llp.lsb, lower_32_bits(chunk->ll_region.paddr)); SET_CH_32(dw, chan->dir, chan->id, llp.msb, upper_32_bits(chunk->ll_region.paddr)); - #endif /* CONFIG_64BIT */ + } else { + #ifdef CONFIG_64BIT + SET_CH_64(dw, chan->dir, chan->id, llp.reg, + chunk->ll_region.paddr); + #endif + } } /* Doorbell */ SET_RW_32(dw, chan->dir, doorbell, diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index fbd05a7284934..8b134896c9edb 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -36,9 +36,11 @@ enum dw_edma_map_format { /** * enum dw_edma_chip_flags - Flags specific to an eDMA chip * @DW_EDMA_CHIP_LOCAL: eDMA is used locally by an endpoint + * @DW_EDMA_CHIP_32BIT_DBI Only support 32bit DBI register access */ enum dw_edma_chip_flags { DW_EDMA_CHIP_LOCAL = BIT(0), + DW_EDMA_CHIP_32BIT_DBI = BIT(1), }; /**