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x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [119.31.174.73] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: a1ec1328-c2ad-4fbf-a6ce-08d77eb4b5e2 x-ms-traffictypediagnostic: VI1PR04MB3181:|VI1PR04MB3181: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:3044; x-forefront-prvs: 0249EFCB0B x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(136003)(366004)(346002)(376002)(39860400002)(396003)(199004)(189003)(1076003)(6512007)(5660300002)(478600001)(6486002)(26005)(71200400001)(6506007)(2906002)(316002)(52116002)(4326008)(186003)(66476007)(110136005)(66946007)(64756008)(66446008)(6636002)(54906003)(8936002)(8676002)(81166006)(81156014)(86362001)(2616005)(44832011)(36756003)(66556008);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR04MB3181;H:VI1PR04MB4431.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: f8+03pK9gKt8/YukHwnf1qt18f8UZ3DSsT7i48Pdaj4bOA2CyrFSwRUYOgC32H+dmJX80UJZsyDXkchqcmPELnAcRKkBbqAwNCFUk091jYxM8pxincqaTUnarLBeb5BVV8l1lMa7wsnN0U67L3cnGLWBnJHK7+z2yWvx5t7ZXaeGMVhSMEEnE2sO6gVvUSVeL9gEXYn7EfiwHrsJ8rzs3/JWLEWrVpUDQi0+2BV3GxrONCoViYZ9b8vJHXdDZ2nJr+VxHd3jth+1kYYgNs6EU8agl6YVa48YESUtub0Lg7OfAElEU3haetnFZztrLdd5t4fGipwS67ka8DwLQbUaGEdJJ4y0YACuB8M+IXKGaPaptAKz/jtbsvp05g7tZCqlOk367C3PZpgIdG8KZ62VPiLQGuO1P5Ll5qYFrnSD/kkAy+sLPnhhAzfa/34fPpQ2 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: a1ec1328-c2ad-4fbf-a6ce-08d77eb4b5e2 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Dec 2019 03:38:10.9936 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NhJDnp/KF+JZTjcKNGktoWjJp/41wi5g5ns9kSez2EoH32E2e9wQMeC+0AbKF9jH X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB3181 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Our platforms(such as LS1021A, LS1012A, LS1043A, LS1046A, LS1028A) with below registers(CHCFG0 - CHCFG15) of eDMA as follows: *-----------------------------------------------------------* | Offset | OTHERS | LS1028A | |--------------|--------------------|-----------------------| | 0x0 | CHCFG0 | CHCFG3 | |--------------|--------------------|-----------------------| | 0x1 | CHCFG1 | CHCFG2 | |--------------|--------------------|-----------------------| | 0x2 | CHCFG2 | CHCFG1 | |--------------|--------------------|-----------------------| | 0x3 | CHCFG3 | CHCFG0 | |--------------|--------------------|-----------------------| | ... | ...... | ...... | |--------------|--------------------|-----------------------| | 0xC | CHCFG12 | CHCFG15 | |--------------|--------------------|-----------------------| | 0xD | CHCFG13 | CHCFG14 | |--------------|--------------------|-----------------------| | 0xE | CHCFG14 | CHCFG13 | |--------------|--------------------|-----------------------| | 0xF | CHCFG15 | CHCFG12 | *-----------------------------------------------------------* This patch is to improve edma driver to fit LS1028A platform. Signed-off-by: Peng Ma Reviewed-by: Robin Gong --- Changed for v5: - no changes drivers/dma/fsl-edma-common.c | 5 +++++ drivers/dma/fsl-edma-common.h | 1 + drivers/dma/fsl-edma.c | 8 ++++++++ 3 files changed, 14 insertions(+) diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index b1a7ca91701a..5697c3622699 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -109,10 +109,15 @@ void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan= , u32 ch =3D fsl_chan->vchan.chan.chan_id; void __iomem *muxaddr; unsigned int chans_per_mux, ch_off; + int endian_diff[4] =3D {3, 1, -1, -3}; u32 dmamux_nr =3D fsl_chan->edma->drvdata->dmamuxs; =20 chans_per_mux =3D fsl_chan->edma->n_chans / dmamux_nr; ch_off =3D fsl_chan->vchan.chan.chan_id % chans_per_mux; + + if (fsl_chan->edma->drvdata->mux_swap) + ch_off +=3D endian_diff[ch_off % 4]; + muxaddr =3D fsl_chan->edma->muxbase[ch / chans_per_mux]; slot =3D EDMAMUX_CHCFG_SOURCE(slot); =20 diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 5eaa2902ed39..67e422590c9a 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -147,6 +147,7 @@ struct fsl_edma_drvdata { enum edma_version version; u32 dmamuxs; bool has_dmaclk; + bool mux_swap; int (*setup_irq)(struct platform_device *pdev, struct fsl_edma_engine *fsl_edma); }; diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c index b626c06ac2e0..eff7ebd8cf35 100644 --- a/drivers/dma/fsl-edma.c +++ b/drivers/dma/fsl-edma.c @@ -233,6 +233,13 @@ static struct fsl_edma_drvdata vf610_data =3D { .setup_irq =3D fsl_edma_irq_init, }; =20 +static struct fsl_edma_drvdata ls1028a_data =3D { + .version =3D v1, + .dmamuxs =3D DMAMUX_NR, + .mux_swap =3D true, + .setup_irq =3D fsl_edma_irq_init, +}; + static struct fsl_edma_drvdata imx7ulp_data =3D { .version =3D v3, .dmamuxs =3D 1, @@ -242,6 +249,7 @@ static struct fsl_edma_drvdata imx7ulp_data =3D { =20 static const struct of_device_id fsl_edma_dt_ids[] =3D { { .compatible =3D "fsl,vf610-edma", .data =3D &vf610_data}, + { .compatible =3D "fsl,ls1028a-edma", .data =3D &ls1028a_data}, { .compatible =3D "fsl,imx7ulp-edma", .data =3D &imx7ulp_data}, { /* sentinel */ } }; --=20 2.17.1