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: Pierre Yves MORDRET Message-Id: <9a375fd3-964f-3d57-9d18-b010e20a4d42@st.com> Date: Tue, 16 Oct 2018 11:19:20 +0200 To: Vinod 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: T24gMTAvMTUvMTggNzoxNCBQTSwgVmlub2Qgd3JvdGU6Cj4gT24gMTAtMTAtMTgsIDA5OjAyLCBQ aWVycmUgWXZlcyBNT1JEUkVUIHdyb3RlOgo+Pgo+Pgo+PiBPbiAxMC8xMC8yMDE4IDA2OjAzIEFN LCBWaW5vZCB3cm90ZToKPj4+IE9uIDA5LTEwLTE4LCAxMDo0MCwgUGllcnJlIFl2ZXMgTU9SRFJF VCB3cm90ZToKPj4+Pgo+Pj4+Cj4+Pj4gT24gMTAvMDcvMjAxOCAwNjowMCBQTSwgVmlub2Qgd3Jv dGU6Cj4+Pj4+IE9uIDI4LTA5LTE4LCAxNTowMSwgUGllcnJlLVl2ZXMgTU9SRFJFVCB3cm90ZToK Pj4+Pj4+IFRoaXMgcGF0Y2ggYWRkcyBzdXBwb3J0IG9mIERNQS9NRE1BIGNoYWluaW5nIHN1cHBv cnQuCj4+Pj4+PiBJdCBpbnRyb2R1Y2VzIGFuIGludGVybWVkaWF0ZSB0cmFuc2ZlciBiZXR3ZWVu IHBlcmlwaGVyYWxzIGFuZCBTVE0zMiBETUEuCj4+Pj4+PiBUaGlzIGludGVybWVkaWF0ZSB0cmFu c2ZlciBpcyB0cmlnZ2VyZWQgYnkgU1cgZm9yIHNpbmdsZSBNMkQgdHJhbnNmZXIgYW5kCj4+Pj4+ PiBieSBTVE0zMiBETUEgSVAgZm9yIGFsbCBvdGhlciBtb2RlcyAoc2csIGN5Y2xpYykgYW5kIGRp cmVjdGlvbiAoRDJNKS4KPj4+Pj4+Cj4+Pj4+PiBBIGdlbmVyaWMgU1JBTSBhbGxvY2F0b3IgaXMg dXNlZCBmb3IgdGhpcyBpbnRlcm1lZGlhdGUgYnVmZmVyCj4+Pj4+PiBFYWNoIERNQSBjaGFubmVs IHdpbGwgYmUgYWJsZSB0byBkZWZpbmUgaXRzIFNSQU0gbmVlZHMgdG8gYWNoaWV2ZSBjaGFpbmlu Zwo+Pj4+Pj4gZmVhdHVyZSA6ICgyIF4gb3JkZXIpICogUEFHRV9TSVpFLgo+Pj4+Pj4gRm9yIGN5 Y2xpYywgU1JBTSBidWZmZXIgaXMgZGVyaXZlZCBmcm9tIHBlcmlvZCBsZW5ndGggKHJvdW5kZWQg b24KPj4+Pj4+IFBBR0VfU0laRSkuCj4+Pj4+Cj4+Pj4+IFNvIElJVUMsIHlvdSBjaGFpbiB0d28g ZG1hIHR4bnMgdG9nZXRoZXIgYW5kIHRyYW5zZmVyIGRhdGEgdmlhIGFuIFNSQU0/Cj4+Pj4KPj4+ PiBDb3JyZWN0LiBvbmUgRE1BIGlzIERNQXYyIChzdG0zMi1kbWEpIGFuZCB0aGUgb3RoZXIgaXMg TURNQShzdG0zMi1tZG1hKS4KPj4+PiBJbnRlcm1lZGlhdGUgdHJhbnNmZXIgaXMgYmV0d2VlbiBk ZXZpY2UgYW5kIG1lbW9yeS4KPj4+PiBUaGlzIGludGVybWVkaWF0ZSB0cmFuc2ZlciBpcyB1c2lu ZyBTRFJBTS4KPj4+Cj4+PiBBaCBzbyB5b3UgdXNlIGRtYSBjYWxscyB0byBzZXR1cCBtZG1hIHh0 ZmVycz8gSSBkb250IHRoaW5rIHRoYXQgaXMgYQo+Pj4gZ29vZCBpZGVhLiBIb3cgZG8geW91IGtu b3cgeW91IHNob3VsZCB1c2UgbWRtYSBmb3Igc3Vic2VxdWVudCB0cmFuc2Zlcj8KPj4+Cj4+Cj4+ IFdoZW4gdXNlciBiaW5kaW5ncyB0b2xkIHRvIHNldHVwIGNoYWluaW5nIGludGVybWVkaWF0ZSBN RE1BIHRyYW5zZmVycyBhcmUgYWx3YXlzCj4+IHRyaWdnZXJzLgo+PiBGb3IgaW5zdGFuY2UgaWYg YSB1c2VyIHJlcXVlc3RzIGEgRGV2Mk1lbSB0cmFuc2ZlciB3aXRoIGNoYWluaW5nLiBGcm9tIGNs aWVudAo+PiBwb3YgdGhpcyBpcyBzdGlsbCBhIHByZXBfc2xhdmVfc2cuIEludGVybmFsbHkgRE1B djIgaXMgc2V0dXAgaW4gY3ljbGljIG1vZGUgKGluCj4+IGRvdWJsZSBidWZmZXIgbW9kZSBpbmRl ZWQgPT4gMiBidWZmZXIgb2YgUEFHRV9TSVpFLzIpIGFuZCBkZXN0aW5hdGlvbiBpcyBTRFJBTS4K Pj4gRE1BdjIgd2lsbCBmbGlwL2Zsb3Agb24gdGhvc2UgMiBidWZmZXJzLgo+PiBBdCB0aGUgc2Ft ZSB0aW1lIERNQXYyIGRyaXZlciBwcmVwYXJlcyBhIE1ETUEgU0cgdGhhdCB3aWxsIGZldGNoIGRh dGEgZnJvbSB0aG9zZQo+PiAyIGJ1ZmZlcnMgaW4gU0RSQU0gYW5kIGZpbGxzIGZpbmFsIGRlc3Rp bmF0aW9uIG1lbW9yeS4KPiAKPiBJIGFtIG5vdCBhYmxlIHRvIGZvbGxvdyBpcyB3aHkgZG9lcyBp dCBuZWVkIHRvIGJlIGludGVybmFsLCB3aHkgc2hvdWxkCj4gdGhlIGNsaWVudCBub3Qgc2V0IHRo ZSB0d28gdHJhbnNmZXJzIGFuZCB0cmlnZ2VyIHRoZW0/Cj4gCgpDbGllbnQgbWF5IHVzZSBvciBu b3QgY2hhaW5pbmc6IGRlZmluZWQgd2l0aGluIERULiBBUEkgYW5kIGR5bmFtaWMgYXJlIHNhbWUg YXQKZHJpdmVyIGNsaWVudCBsZXZlbC4gTW9yZW92ZXIgZHJpdmVyIGV4cG9zZXMgb25seSBETUF2 MiBhbmQgbm90IGJvdGggRE1BdjIgYW5kCk1ETUEuIFRoaXMgaXMgdG90YWxseSBoaWRkZW4gZm9y IGNsaWVudC4gSWYgY2xpZW50IHNldHMgYm90aCB0aGlzIHdvdWxkIGltcGx5CmNoYW5naW5nIGFs bCBkcml2ZXJzIHRoYXQgbWF5IHdhbnQgdXNlIGNoYWluaW5nLiBFdmVuIG1vcmUgdG8gZGVhbCB3 aXRoIERNQXYyCmFuZCBNRE1BIGF0IGl0cyBsZXZlbC4KU2luY2UgRE1BdjIgZGVhbHMgd2l0aCBN RE1BLCBhbGwgZHJpdmVycyBhcmUgc2FtZSBhcyBiZWZvcmUuIG5vIGNoYW5nZXMgcmVxdWlyZWQu CgpSZWdhcmRzCg==