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: Peter Ujfalusi Message-Id: <93273c34-e5e3-3c38-d648-2c57939621cc@ti.com> Date: Tue, 9 Oct 2018 14:22:19 +0300 To: Vinod Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org, grygorii.strashko@ti.com List-ID: T24gMjAxOC0xMC0wOSAxMzo0OSwgVmlub2Qgd3JvdGU6Cj4gT24gMjQtMDktMTgsIDE2OjAwLCBQ ZXRlciBVamZhbHVzaSB3cm90ZToKPj4gZG1hX2dldF9hbnlfc2xhdmVfY2hhbm5lbCgpIHdvdWxk IHNraXAgdXNpbmcgdGhlIGZpbHRlciBmdW5jdGlvbiwgd2hpY2gKPj4gaW4gc29tZSBjYXNlcyBu ZWVkZWQgdG8gYmUgZXhlY3V0ZWQgYmVmb3JlIHRoZSBhbGxvY19jaGFuX3Jlc291cmNlcwo+PiBj YWxsYmFjayB0byBtYWtlIHN1cmUgdGhhdCBhbGwgcGFyYW1ldGVycyBhcmUgcHJvdmlkZWQgZm9y IHRoZSBzbGF2ZQo+PiBjaGFubmVsLgo+IAo+IEFub3RoZXIgcmVxdWVzdCBBUEksIGkgdGhvdWdo IHlvdSBoYWQgc29sdmVkIHRoYXQgbGFzdCB0aW1lIGFyb3VuZCA6KAoKWWVzLCBJIHRob3VnaHQg c28sIGJ1dCB0aGlzIHRpbWUgaXQgaXMgZGlmZmVyZW50LgpJIHdhbnQgdG8gZHJvcCB0aGlzIHBh dGNoIG15c2VsZiBhbHNvLCBidXQgSSBuZWVkIHRvIGZpZ3VyZSBvdXQgYSB3YXkgdG8KZG8gd2hh dCB0aGUgZG1hZGV2X2dldF9zbGF2ZV9jaGFubmVsKCkgYWxsb3dzIG1lIHRvIGRvLgoKSW4gcGF0 aCA0LCB1ZG1hX29mX3hsYXRlKCkgYW5kIHRoZSB1ZG1hX2RtYV9maWx0ZXJfZm4oKQoKSXQgbWln aHQgYmUgcG9zc2libGUgdGhhdCBJIGxvb2sgdXAgYSBmcmVlIHVkbWFfY2hhbiwgZG8gdGhlIHNl dHVwIHZpYQp0aGUgZmlsdGVyX2ZuKCkgYW5kIGZpbmFsbHkgY2FsbCB0aGUgZG1hX2dldF9zbGF2 ZV9jaGFubmVsKCkuCk1pZ2h0IHdvcmsgZmluZSwgYnV0IEkgd2FudGVkIHRvIGF2b2lkIHRvIGlt cGxlbWVudCBteSBvd24gZmluZCBmcmVlCmNoYW5uZWwgY29kZSB3aGVuIHdlIGhhdmUgaXQgYWxy ZWFkeSBpbiBETUFlbmdpbmUgY29yZS4KCj4+Cj4+IFNpZ25lZC1vZmYtYnk6IFBldGVyIFVqZmFs dXNpIDxwZXRlci51amZhbHVzaUB0aS5jb20+Cj4+IC0tLQo+PiAgZHJpdmVycy9kbWEvZG1hZW5n aW5lLmMgICB8IDIwICsrKysrKysrKysrKysrKysrKysrCj4+ICBpbmNsdWRlL2xpbnV4L2RtYWVu Z2luZS5oIHwgIDIgKysKPj4gIDIgZmlsZXMgY2hhbmdlZCwgMjIgaW5zZXJ0aW9ucygrKQo+Pgo+ PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvZG1hZW5naW5lLmMgYi9kcml2ZXJzL2RtYS9kbWFl bmdpbmUuYwo+PiBpbmRleCAyN2I2ZDdjMmQ4YTAuLmI4MGYxYmRkODgxMyAxMDA2NDQKPj4gLS0t IGEvZHJpdmVycy9kbWEvZG1hZW5naW5lLmMKPj4gKysrIGIvZHJpdmVycy9kbWEvZG1hZW5naW5l LmMKPj4gQEAgLTYzNCw2ICs2MzQsMjYgQEAgc3RydWN0IGRtYV9jaGFuICpkbWFfZ2V0X2FueV9z bGF2ZV9jaGFubmVsKHN0cnVjdCBkbWFfZGV2aWNlICpkZXZpY2UpCj4+ICB9Cj4+ICBFWFBPUlRf U1lNQk9MX0dQTChkbWFfZ2V0X2FueV9zbGF2ZV9jaGFubmVsKTsKPj4gIAo+PiArc3RydWN0IGRt YV9jaGFuICpkbWFkZXZfZ2V0X3NsYXZlX2NoYW5uZWwoc3RydWN0IGRtYV9kZXZpY2UgKmRldmlj ZSwKPj4gKwkJCQkJICBkbWFfZmlsdGVyX2ZuIGZuLCB2b2lkICpmbl9wYXJhbSkKPj4gK3sKPj4g KwlkbWFfY2FwX21hc2tfdCBtYXNrOwo+PiArCXN0cnVjdCBkbWFfY2hhbiAqY2hhbjsKPj4gKwo+ PiArCWRtYV9jYXBfemVybyhtYXNrKTsKPj4gKwlkbWFfY2FwX3NldChETUFfU0xBVkUsIG1hc2sp Owo+PiArCj4+ICsJLyogbG9jayBhZ2FpbnN0IF9fZG1hX3JlcXVlc3RfY2hhbm5lbCAqLwo+PiAr CW11dGV4X2xvY2soJmRtYV9saXN0X211dGV4KTsKPj4gKwo+PiArCWNoYW4gPSBmaW5kX2NhbmRp ZGF0ZShkZXZpY2UsICZtYXNrLCBmbiwgZm5fcGFyYW0pOwo+PiArCj4+ICsJbXV0ZXhfdW5sb2Nr KCZkbWFfbGlzdF9tdXRleCk7Cj4+ICsKPj4gKwlyZXR1cm4gSVNfRVJSKGNoYW4pID8gTlVMTCA6 IGNoYW47Cj4+ICt9Cj4+ICtFWFBPUlRfU1lNQk9MX0dQTChkbWFkZXZfZ2V0X3NsYXZlX2NoYW5u ZWwpOwo+PiArCj4+ICAvKioKPj4gICAqIF9fZG1hX3JlcXVlc3RfY2hhbm5lbCAtIHRyeSB0byBh bGxvY2F0ZSBhbiBleGNsdXNpdmUgY2hhbm5lbAo+PiAgICogQG1hc2s6IGNhcGFiaWxpdGllcyB0 aGF0IHRoZSBjaGFubmVsIG11c3Qgc2F0aXNmeQo+PiBkaWZmIC0tZ2l0IGEvaW5jbHVkZS9saW51 eC9kbWFlbmdpbmUuaCBiL2luY2x1ZGUvbGludXgvZG1hZW5naW5lLmgKPj4gaW5kZXggMTZjOWQw MjE5ODhhLi4zMjAxMGM2YWUxM2EgMTAwNjQ0Cj4+IC0tLSBhL2luY2x1ZGUvbGludXgvZG1hZW5n aW5lLmgKPj4gKysrIGIvaW5jbHVkZS9saW51eC9kbWFlbmdpbmUuaAo+PiBAQCAtMTU0Miw2ICsx NTQyLDggQEAgdm9pZCBkbWFfYXN5bmNfZGV2aWNlX3VucmVnaXN0ZXIoc3RydWN0IGRtYV9kZXZp Y2UgKmRldmljZSk7Cj4+ICB2b2lkIGRtYV9ydW5fZGVwZW5kZW5jaWVzKHN0cnVjdCBkbWFfYXN5 bmNfdHhfZGVzY3JpcHRvciAqdHgpOwo+PiAgc3RydWN0IGRtYV9jaGFuICpkbWFfZ2V0X3NsYXZl X2NoYW5uZWwoc3RydWN0IGRtYV9jaGFuICpjaGFuKTsKPj4gIHN0cnVjdCBkbWFfY2hhbiAqZG1h X2dldF9hbnlfc2xhdmVfY2hhbm5lbChzdHJ1Y3QgZG1hX2RldmljZSAqZGV2aWNlKTsKPj4gK3N0 cnVjdCBkbWFfY2hhbiAqZG1hZGV2X2dldF9zbGF2ZV9jaGFubmVsKHN0cnVjdCBkbWFfZGV2aWNl ICpkZXZpY2UsCj4+ICsJCQkJCSAgZG1hX2ZpbHRlcl9mbiBmbiwgdm9pZCAqZm5fcGFyYW0pOwo+ PiAgI2RlZmluZSBkbWFfcmVxdWVzdF9jaGFubmVsKG1hc2ssIHgsIHkpIF9fZG1hX3JlcXVlc3Rf Y2hhbm5lbCgmKG1hc2spLCB4LCB5KQo+PiAgI2RlZmluZSBkbWFfcmVxdWVzdF9zbGF2ZV9jaGFu bmVsX2NvbXBhdChtYXNrLCB4LCB5LCBkZXYsIG5hbWUpIFwKPj4gIAlfX2RtYV9yZXF1ZXN0X3Ns YXZlX2NoYW5uZWxfY29tcGF0KCYobWFzayksIHgsIHksIGRldiwgbmFtZSkKPj4gLS0gCj4+IFBl dGVyCj4+Cj4+IFRleGFzIEluc3RydW1lbnRzIEZpbmxhbmQgT3ksIFBvcmtrYWxhbmthdHUgMjIs IDAwMTgwIEhlbHNpbmtpLgo+PiBZLXR1bm51cy9CdXNpbmVzcyBJRDogMDYxNTUyMS00LiBLb3Rp cGFpa2thL0RvbWljaWxlOiBIZWxzaW5raQo+IAoKLSBQw6l0ZXIKClRleGFzIEluc3RydW1lbnRz IEZpbmxhbmQgT3ksIFBvcmtrYWxhbmthdHUgMjIsIDAwMTgwIEhlbHNpbmtpLgpZLXR1bm51cy9C dXNpbmVzcyBJRDogMDYxNTUyMS00LiBLb3RpcGFpa2thL0RvbWljaWxlOiBIZWxzaW5raQo=