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: [RFC,2/5] dmaengine: Add function to request slave channel from a dma_device From: Vinod Koul Message-Id: <20181009104934.GL2372@vkoul-mobl> Date: Tue, 9 Oct 2018 16:19:34 +0530 To: Peter Ujfalusi Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org, grygorii.strashko@ti.com List-ID: T24gMjQtMDktMTgsIDE2OjAwLCBQZXRlciBVamZhbHVzaSB3cm90ZToKPiBkbWFfZ2V0X2FueV9z bGF2ZV9jaGFubmVsKCkgd291bGQgc2tpcCB1c2luZyB0aGUgZmlsdGVyIGZ1bmN0aW9uLCB3aGlj aAo+IGluIHNvbWUgY2FzZXMgbmVlZGVkIHRvIGJlIGV4ZWN1dGVkIGJlZm9yZSB0aGUgYWxsb2Nf Y2hhbl9yZXNvdXJjZXMKPiBjYWxsYmFjayB0byBtYWtlIHN1cmUgdGhhdCBhbGwgcGFyYW1ldGVy cyBhcmUgcHJvdmlkZWQgZm9yIHRoZSBzbGF2ZQo+IGNoYW5uZWwuCgpBbm90aGVyIHJlcXVlc3Qg QVBJLCBpIHRob3VnaCB5b3UgaGFkIHNvbHZlZCB0aGF0IGxhc3QgdGltZSBhcm91bmQgOigKCj4g Cj4gU2lnbmVkLW9mZi1ieTogUGV0ZXIgVWpmYWx1c2kgPHBldGVyLnVqZmFsdXNpQHRpLmNvbT4K PiAtLS0KPiAgZHJpdmVycy9kbWEvZG1hZW5naW5lLmMgICB8IDIwICsrKysrKysrKysrKysrKysr KysrCj4gIGluY2x1ZGUvbGludXgvZG1hZW5naW5lLmggfCAgMiArKwo+ICAyIGZpbGVzIGNoYW5n ZWQsIDIyIGluc2VydGlvbnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvZG1hZW5n aW5lLmMgYi9kcml2ZXJzL2RtYS9kbWFlbmdpbmUuYwo+IGluZGV4IDI3YjZkN2MyZDhhMC4uYjgw ZjFiZGQ4ODEzIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL2RtYWVuZ2luZS5jCj4gKysrIGIv ZHJpdmVycy9kbWEvZG1hZW5naW5lLmMKPiBAQCAtNjM0LDYgKzYzNCwyNiBAQCBzdHJ1Y3QgZG1h X2NoYW4gKmRtYV9nZXRfYW55X3NsYXZlX2NoYW5uZWwoc3RydWN0IGRtYV9kZXZpY2UgKmRldmlj ZSkKPiAgfQo+ICBFWFBPUlRfU1lNQk9MX0dQTChkbWFfZ2V0X2FueV9zbGF2ZV9jaGFubmVsKTsK PiAgCj4gK3N0cnVjdCBkbWFfY2hhbiAqZG1hZGV2X2dldF9zbGF2ZV9jaGFubmVsKHN0cnVjdCBk bWFfZGV2aWNlICpkZXZpY2UsCj4gKwkJCQkJICBkbWFfZmlsdGVyX2ZuIGZuLCB2b2lkICpmbl9w YXJhbSkKPiArewo+ICsJZG1hX2NhcF9tYXNrX3QgbWFzazsKPiArCXN0cnVjdCBkbWFfY2hhbiAq Y2hhbjsKPiArCj4gKwlkbWFfY2FwX3plcm8obWFzayk7Cj4gKwlkbWFfY2FwX3NldChETUFfU0xB VkUsIG1hc2spOwo+ICsKPiArCS8qIGxvY2sgYWdhaW5zdCBfX2RtYV9yZXF1ZXN0X2NoYW5uZWwg Ki8KPiArCW11dGV4X2xvY2soJmRtYV9saXN0X211dGV4KTsKPiArCj4gKwljaGFuID0gZmluZF9j YW5kaWRhdGUoZGV2aWNlLCAmbWFzaywgZm4sIGZuX3BhcmFtKTsKPiArCj4gKwltdXRleF91bmxv Y2soJmRtYV9saXN0X211dGV4KTsKPiArCj4gKwlyZXR1cm4gSVNfRVJSKGNoYW4pID8gTlVMTCA6 IGNoYW47Cj4gK30KPiArRVhQT1JUX1NZTUJPTF9HUEwoZG1hZGV2X2dldF9zbGF2ZV9jaGFubmVs KTsKPiArCj4gIC8qKgo+ICAgKiBfX2RtYV9yZXF1ZXN0X2NoYW5uZWwgLSB0cnkgdG8gYWxsb2Nh dGUgYW4gZXhjbHVzaXZlIGNoYW5uZWwKPiAgICogQG1hc2s6IGNhcGFiaWxpdGllcyB0aGF0IHRo ZSBjaGFubmVsIG11c3Qgc2F0aXNmeQo+IGRpZmYgLS1naXQgYS9pbmNsdWRlL2xpbnV4L2RtYWVu Z2luZS5oIGIvaW5jbHVkZS9saW51eC9kbWFlbmdpbmUuaAo+IGluZGV4IDE2YzlkMDIxOTg4YS4u MzIwMTBjNmFlMTNhIDEwMDY0NAo+IC0tLSBhL2luY2x1ZGUvbGludXgvZG1hZW5naW5lLmgKPiAr KysgYi9pbmNsdWRlL2xpbnV4L2RtYWVuZ2luZS5oCj4gQEAgLTE1NDIsNiArMTU0Miw4IEBAIHZv aWQgZG1hX2FzeW5jX2RldmljZV91bnJlZ2lzdGVyKHN0cnVjdCBkbWFfZGV2aWNlICpkZXZpY2Up Owo+ICB2b2lkIGRtYV9ydW5fZGVwZW5kZW5jaWVzKHN0cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3Jp cHRvciAqdHgpOwo+ICBzdHJ1Y3QgZG1hX2NoYW4gKmRtYV9nZXRfc2xhdmVfY2hhbm5lbChzdHJ1 Y3QgZG1hX2NoYW4gKmNoYW4pOwo+ICBzdHJ1Y3QgZG1hX2NoYW4gKmRtYV9nZXRfYW55X3NsYXZl X2NoYW5uZWwoc3RydWN0IGRtYV9kZXZpY2UgKmRldmljZSk7Cj4gK3N0cnVjdCBkbWFfY2hhbiAq ZG1hZGV2X2dldF9zbGF2ZV9jaGFubmVsKHN0cnVjdCBkbWFfZGV2aWNlICpkZXZpY2UsCj4gKwkJ CQkJICBkbWFfZmlsdGVyX2ZuIGZuLCB2b2lkICpmbl9wYXJhbSk7Cj4gICNkZWZpbmUgZG1hX3Jl cXVlc3RfY2hhbm5lbChtYXNrLCB4LCB5KSBfX2RtYV9yZXF1ZXN0X2NoYW5uZWwoJihtYXNrKSwg eCwgeSkKPiAgI2RlZmluZSBkbWFfcmVxdWVzdF9zbGF2ZV9jaGFubmVsX2NvbXBhdChtYXNrLCB4 LCB5LCBkZXYsIG5hbWUpIFwKPiAgCV9fZG1hX3JlcXVlc3Rfc2xhdmVfY2hhbm5lbF9jb21wYXQo JihtYXNrKSwgeCwgeSwgZGV2LCBuYW1lKQo+IC0tIAo+IFBldGVyCj4gCj4gVGV4YXMgSW5zdHJ1 bWVudHMgRmlubGFuZCBPeSwgUG9ya2thbGFua2F0dSAyMiwgMDAxODAgSGVsc2lua2kuCj4gWS10 dW5udXMvQnVzaW5lc3MgSUQ6IDA2MTU1MjEtNC4gS290aXBhaWtrYS9Eb21pY2lsZTogSGVsc2lu a2kK