From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v10,1/3] dmaengine: 8250_mtk_dma: add MediaTek uart DMA support From: Long Cheng Message-Id: <1550112296.7678.5.camel@mhfsdcap03> Date: Thu, 14 Feb 2019 10:44:56 +0800 To: Vinod Koul Cc: Randy Dunlap , Rob Herring , Mark Rutland , Ryder Lee , Sean Wang , Nicolas Boichat , Matthias Brugger , Dan Williams , Greg Kroah-Hartman , Jiri Slaby , Sean Wang , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, srv_heupstream@mediatek.com, Yingjoe Chen , YT Shen , Zhenbao Liu , Long Cheng List-ID: T24gTW9uLCAyMDE5LTAyLTA0IGF0IDEyOjUxICswNTMwLCBWaW5vZCBLb3VsIHdyb3RlOgoKSGkg Vmlub2Qgc2lyLAoKPiBPbiAxOC0wMS0xOSwgMTE6MTAsIExvbmcgQ2hlbmcgd3JvdGU6Cj4gPiAr c3RhdGljIGVudW0gZG1hX3N0YXR1cyBtdGtfdWFydF9hcGRtYV90eF9zdGF0dXMoc3RydWN0IGRt YV9jaGFuICpjaGFuLAo+ID4gKwkJCQkJIGRtYV9jb29raWVfdCBjb29raWUsCj4gPiArCQkJCQkg c3RydWN0IGRtYV90eF9zdGF0ZSAqdHhzdGF0ZSkKPiA+ICt7Cj4gPiArCXN0cnVjdCBtdGtfY2hh biAqYyA9IHRvX210a191YXJ0X2FwZG1hX2NoYW4oY2hhbik7Cj4gPiArCWVudW0gZG1hX3N0YXR1 cyByZXQ7Cj4gPiArCXVuc2lnbmVkIGxvbmcgZmxhZ3M7Cj4gPiArCj4gPiArCWlmICghdHhzdGF0 ZSkKPiA+ICsJCXJldHVybiBETUFfRVJST1I7Cj4gCj4gV2h5LCBpdCBpcyBub3QgYSBtYW5kYXRv cnkgYXJnIQoKTmV4dCB2ZXJzaW9uLCBJIHdpbGwgcmVtb3ZlIGl0Lgo+IAo+ID4gKwlyZXQgPSBk bWFfY29va2llX3N0YXR1cyhjaGFuLCBjb29raWUsIHR4c3RhdGUpOwo+ID4gKwlzcGluX2xvY2tf aXJxc2F2ZSgmYy0+dmMubG9jaywgZmxhZ3MpOwo+ID4gKwlpZiAocmV0ID09IERNQV9JTl9QUk9H UkVTUykgewo+ID4gKwkJYy0+cnhfc3RhdHVzID0gbXRrX3VhcnRfYXBkbWFfcmVhZChjLCBWRkZf UlBUKSAmIFZGRl9SSU5HX1NJWkU7Cj4gPiArCQlkbWFfc2V0X3Jlc2lkdWUodHhzdGF0ZSwgYy0+ cnhfc3RhdHVzKTsKPiA+ICsJfSBlbHNlIGlmIChyZXQgPT0gRE1BX0NPTVBMRVRFICYmIGMtPmRp ciA9PSBETUFfREVWX1RPX01FTSkgewo+ID4gKwkJZG1hX3NldF9yZXNpZHVlKHR4c3RhdGUsIGMt PnJ4X3N0YXR1cyk7Cj4gCj4gd2hhdCBpcyB0aGUgcG9pbnQgaXMgc2V0dGluZyByZXNpZHVlIHRv IGNvbWxldGVkIHR4biwgaXQgaXMgemVybyEKPiAKPiA+ICsJfSBlbHNlIHsKPiA+ICsJCWRtYV9z ZXRfcmVzaWR1ZSh0eHN0YXRlLCAwKTsKPiAKPiBuYWFoIHRoYXQgZG9lc250IHNvdW5kIGNvcnJl Y3QhCj4gCk5leHQgdmVyc2lvbiwgSSB3aWxsIG1vZGlmeSB0aGUgZnVuY3Rpb24uCgo+ID4gK3N0 YXRpYyB2b2lkIG10a191YXJ0X2FwZG1hX2NvbmZpZ193cml0ZShzdHJ1Y3QgZG1hX2NoYW4gKmNo YW4sCj4gPiArCQkJICAgICAgIHN0cnVjdCBkbWFfc2xhdmVfY29uZmlnICpjZmcsCj4gPiArCQkJ ICAgICAgIGVudW0gZG1hX3RyYW5zZmVyX2RpcmVjdGlvbiBkaXIpCj4gPiArewo+ID4gKwlzdHJ1 Y3QgbXRrX2NoYW4gKmMgPSB0b19tdGtfdWFydF9hcGRtYV9jaGFuKGNoYW4pOwo+ID4gKwlzdHJ1 Y3QgbXRrX3VhcnRfYXBkbWFkZXYgKm10a2QgPQo+ID4gKwkJCQl0b19tdGtfdWFydF9hcGRtYV9k ZXYoYy0+dmMuY2hhbi5kZXZpY2UpOwo+ID4gKwl1bnNpZ25lZCBpbnQgdG1wOwo+ID4gKwo+ID4g KwlpZiAobXRrX3VhcnRfYXBkbWFfcmVhZChjLCBWRkZfRU4pID09IFZGRl9FTl9CKQo+ID4gKwkJ cmV0dXJuOwo+ID4gKwo+ID4gKwljLT5kaXIgPSBkaXI7Cj4gPiArCj4gPiArCWlmIChkaXIgPT0g RE1BX0RFVl9UT19NRU0pIHsKPiA+ICsJCXRtcCA9IGNmZy0+c3JjX2FkZHJfd2lkdGggKiAxMDI0 Owo+IAo+IHdoeSBtdWx0aXBseSBieSAxMDI0Pwo+IApOZXh0IHZlcnNpb24sIEkgd2lsbCBtb2Rp ZnkgdGhlIHRoaXMsIHdpdGggJ3NyY19wb3J0X3dpbmRvd19zaXplJyAmJgonZHN0X3BvcnRfd2lu ZG93X3NpemUnLgoKPiA+ICtzdGF0aWMgaW50IG10a191YXJ0X2FwZG1hX2RldmljZV9wYXVzZShz dHJ1Y3QgZG1hX2NoYW4gKmNoYW4pCj4gPiArewo+ID4gKwkvKiBqdXN0IGZvciBjaGVjayBjYXBz IHBhc3MgKi8KPiA+ICsJcmV0dXJuIDA7Cj4gPiArfQo+IAo+IHBsZWFzZSByZW1vdmUsIHRoaXMg aXMgbm90IGEgbWFuZGF0b3J5IGZuCgpDYW4ndCByZW1vdmUgaXQuIEJlZm9yZSB0aGUgbWFpbCwg aSBoYWQgZXhwbGFpbmVkIGl0LiBpbiA4MjUwIHVhcnQKZnJhbWV3b3JrLCB3aWxsIGNoZWNrIHRo ZSBmdW5jdGlvbi4uCgp0aGFua3MuCg==