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: [v3,4/7] dmaengine: stm32-dma: Add DMA/MDMA chaining support From: Vinod Koul Message-Id: <20181015171403.GM2400@vkoul-mobl> Date: Mon, 15 Oct 2018 22:44:03 +0530 To: Pierre Yves MORDRET Cc: Rob Herring , Mark Rutland , Alexandre Torgue , Maxime Coquelin , Dan Williams , devicetree@vger.kernel.org, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-ID: T24gMTAtMTAtMTgsIDA5OjAyLCBQaWVycmUgWXZlcyBNT1JEUkVUIHdyb3RlOgo+IAo+IAo+IE9u IDEwLzEwLzIwMTggMDY6MDMgQU0sIFZpbm9kIHdyb3RlOgo+ID4gT24gMDktMTAtMTgsIDEwOjQw LCBQaWVycmUgWXZlcyBNT1JEUkVUIHdyb3RlOgo+ID4+Cj4gPj4KPiA+PiBPbiAxMC8wNy8yMDE4 IDA2OjAwIFBNLCBWaW5vZCB3cm90ZToKPiA+Pj4gT24gMjgtMDktMTgsIDE1OjAxLCBQaWVycmUt WXZlcyBNT1JEUkVUIHdyb3RlOgo+ID4+Pj4gVGhpcyBwYXRjaCBhZGRzIHN1cHBvcnQgb2YgRE1B L01ETUEgY2hhaW5pbmcgc3VwcG9ydC4KPiA+Pj4+IEl0IGludHJvZHVjZXMgYW4gaW50ZXJtZWRp YXRlIHRyYW5zZmVyIGJldHdlZW4gcGVyaXBoZXJhbHMgYW5kIFNUTTMyIERNQS4KPiA+Pj4+IFRo aXMgaW50ZXJtZWRpYXRlIHRyYW5zZmVyIGlzIHRyaWdnZXJlZCBieSBTVyBmb3Igc2luZ2xlIE0y RCB0cmFuc2ZlciBhbmQKPiA+Pj4+IGJ5IFNUTTMyIERNQSBJUCBmb3IgYWxsIG90aGVyIG1vZGVz IChzZywgY3ljbGljKSBhbmQgZGlyZWN0aW9uIChEMk0pLgo+ID4+Pj4KPiA+Pj4+IEEgZ2VuZXJp YyBTUkFNIGFsbG9jYXRvciBpcyB1c2VkIGZvciB0aGlzIGludGVybWVkaWF0ZSBidWZmZXIKPiA+ Pj4+IEVhY2ggRE1BIGNoYW5uZWwgd2lsbCBiZSBhYmxlIHRvIGRlZmluZSBpdHMgU1JBTSBuZWVk cyB0byBhY2hpZXZlIGNoYWluaW5nCj4gPj4+PiBmZWF0dXJlIDogKDIgXiBvcmRlcikgKiBQQUdF X1NJWkUuCj4gPj4+PiBGb3IgY3ljbGljLCBTUkFNIGJ1ZmZlciBpcyBkZXJpdmVkIGZyb20gcGVy aW9kIGxlbmd0aCAocm91bmRlZCBvbgo+ID4+Pj4gUEFHRV9TSVpFKS4KPiA+Pj4KPiA+Pj4gU28g SUlVQywgeW91IGNoYWluIHR3byBkbWEgdHhucyB0b2dldGhlciBhbmQgdHJhbnNmZXIgZGF0YSB2 aWEgYW4gU1JBTT8KPiA+Pgo+ID4+IENvcnJlY3QuIG9uZSBETUEgaXMgRE1BdjIgKHN0bTMyLWRt YSkgYW5kIHRoZSBvdGhlciBpcyBNRE1BKHN0bTMyLW1kbWEpLgo+ID4+IEludGVybWVkaWF0ZSB0 cmFuc2ZlciBpcyBiZXR3ZWVuIGRldmljZSBhbmQgbWVtb3J5Lgo+ID4+IFRoaXMgaW50ZXJtZWRp YXRlIHRyYW5zZmVyIGlzIHVzaW5nIFNEUkFNLgo+ID4gCj4gPiBBaCBzbyB5b3UgdXNlIGRtYSBj YWxscyB0byBzZXR1cCBtZG1hIHh0ZmVycz8gSSBkb250IHRoaW5rIHRoYXQgaXMgYQo+ID4gZ29v ZCBpZGVhLiBIb3cgZG8geW91IGtub3cgeW91IHNob3VsZCB1c2UgbWRtYSBmb3Igc3Vic2VxdWVu dCB0cmFuc2Zlcj8KPiA+IAo+IAo+IFdoZW4gdXNlciBiaW5kaW5ncyB0b2xkIHRvIHNldHVwIGNo YWluaW5nIGludGVybWVkaWF0ZSBNRE1BIHRyYW5zZmVycyBhcmUgYWx3YXlzCj4gdHJpZ2dlcnMu Cj4gRm9yIGluc3RhbmNlIGlmIGEgdXNlciByZXF1ZXN0cyBhIERldjJNZW0gdHJhbnNmZXIgd2l0 aCBjaGFpbmluZy4gRnJvbSBjbGllbnQKPiBwb3YgdGhpcyBpcyBzdGlsbCBhIHByZXBfc2xhdmVf c2cuIEludGVybmFsbHkgRE1BdjIgaXMgc2V0dXAgaW4gY3ljbGljIG1vZGUgKGluCj4gZG91Ymxl IGJ1ZmZlciBtb2RlIGluZGVlZCA9PiAyIGJ1ZmZlciBvZiBQQUdFX1NJWkUvMikgYW5kIGRlc3Rp bmF0aW9uIGlzIFNEUkFNLgo+IERNQXYyIHdpbGwgZmxpcC9mbG9wIG9uIHRob3NlIDIgYnVmZmVy cy4KPiBBdCB0aGUgc2FtZSB0aW1lIERNQXYyIGRyaXZlciBwcmVwYXJlcyBhIE1ETUEgU0cgdGhh dCB3aWxsIGZldGNoIGRhdGEgZnJvbSB0aG9zZQo+IDIgYnVmZmVycyBpbiBTRFJBTSBhbmQgZmls bHMgZmluYWwgZGVzdGluYXRpb24gbWVtb3J5LgoKSSBhbSBub3QgYWJsZSB0byBmb2xsb3cgaXMg d2h5IGRvZXMgaXQgbmVlZCB0byBiZSBpbnRlcm5hbCwgd2h5IHNob3VsZAp0aGUgY2xpZW50IG5v dCBzZXQgdGhlIHR3byB0cmFuc2ZlcnMgYW5kIHRyaWdnZXIgdGhlbT8K