From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Murphy Subject: Re: [PATCH v3 4/7] of: address: Add support for the parent DMA bus Date: Tue, 12 Feb 2019 18:15:13 +0000 Message-ID: <25d076ef-60a9-b424-878b-d8066e907b35@arm.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id 8C09F6E682 for ; Tue, 12 Feb 2019 18:15:17 +0000 (UTC) In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Maxime Ripard , Mark Rutland , Rob Herring , Frank Rowand , Chen-Yu Tsai Cc: devicetree@vger.kernel.org, Yong Deng , Arnd Bergmann , dri-devel@lists.freedesktop.org, Dave Martin , Paul Kocialkowski , Thomas Petazzoni , Georgi Djakov , linux-arm-kernel@lists.infradead.org List-Id: dri-devel@lists.freedesktop.org T24gMTEvMDIvMjAxOSAxNTowMiwgTWF4aW1lIFJpcGFyZCB3cm90ZToKPiBTb21lIFNvQ3MgaGF2 ZSBkZXZpY2VzIHRoYXQgYXJlIHVzaW5nIGEgc2VwYXJhdGUgYnVzIGZyb20gdGhlIG1haW4gYnVz IHRvCj4gcGVyZm9ybSBETUEuCj4gCj4gVGhlc2UgYnVzZXMgbWlnaHQgaGF2ZSBzb21lIHJlc3Ry aWN0aW9ucyBhbmQvb3IgZGlmZmVyZW50IG1hcHBpbmcgdGhhbiBmcm9tCj4gdGhlIENQVSBzaWRl LCBzbyB3ZSdkIG5lZWQgdG8gZXhwcmVzcyB0aG9zZSB1c2luZyB0aGUgdXN1YWwgZG1hLXJhbmdl cywgYnV0Cj4gdXNpbmcgYSBkaWZmZXJlbnQgRFQgbm9kZSB0aGFuIHRoZSBub2RlJ3MgcGFyZW50 Lgo+IAo+IE5vdyB0aGF0IHRoZSBnZW5lcmljIGludGVyY29ubmVjdCBiaW5kaW5ncyBhcmUgYXZh aWxhYmxlLCB3ZSBjYW4gbW9kZWwgYW4KPiBpbnRlcmNvbm5lY3Qgd2l0aCB0aGUgcmVzZXJ2ZWQg bmFtZSAiZG1hIiBmb3IgdGhvc2UgdXNlLWNhc2VzLgo+IAo+IFNpZ25lZC1vZmYtYnk6IE1heGlt ZSBSaXBhcmQgPG1heGltZS5yaXBhcmRAYm9vdGxpbi5jb20+Cj4gLS0tCj4gICBkcml2ZXJzL29m L2FkZHJlc3MuYyB8IDM0ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKystLS0KPiAgIDEg ZmlsZSBjaGFuZ2VkLCAzMSBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQo+IAo+IGRpZmYg LS1naXQgYS9kcml2ZXJzL29mL2FkZHJlc3MuYyBiL2RyaXZlcnMvb2YvYWRkcmVzcy5jCj4gaW5k ZXggNGM1ZGMyMWM3MWNhLi4wZTlkODdhNjY0ZjUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9vZi9h ZGRyZXNzLmMKPiArKysgYi9kcml2ZXJzL29mL2FkZHJlc3MuYwo+IEBAIC01ODMsOCArNTgzLDgg QEAgc3RhdGljIHU2NCBfX29mX3RyYW5zbGF0ZV9hZGRyZXNzKHN0cnVjdCBkZXZpY2Vfbm9kZSAq ZGV2LAo+ICAgCS8qIEluY3JlYXNlIHJlZmNvdW50IGF0IGN1cnJlbnQgbGV2ZWwgKi8KPiAgIAlv Zl9ub2RlX2dldChkZXYpOwo+ICAgCj4gKwkqaG9zdCA9IE5VTEw7Cj4gICAJaWYgKCFwYXJlbnQp IHsKPiAtCQkqaG9zdCA9IE5VTEw7Cj4gICAJCS8qIEdldCBwYXJlbnQgJiBtYXRjaCBidXMgdHlw ZSAqLwo+ICAgCQlwYXJlbnQgPSBvZl9nZXRfcGFyZW50KGRldik7Cj4gICAJCWlmIChwYXJlbnQg PT0gTlVMTCkKPiBAQCAtNjc4LDEyICs2NzgsMzQgQEAgdTY0IG9mX3RyYW5zbGF0ZV9hZGRyZXNz KHN0cnVjdCBkZXZpY2Vfbm9kZSAqZGV2LCBjb25zdCBfX2JlMzIgKmluX2FkZHIpCj4gICB9Cj4g ICBFWFBPUlRfU1lNQk9MKG9mX3RyYW5zbGF0ZV9hZGRyZXNzKTsKPiAgIAo+ICtzdGF0aWMgc3Ry dWN0IGRldmljZV9ub2RlICpfX29mX2dldF9kbWFfcGFyZW50KHN0cnVjdCBkZXZpY2Vfbm9kZSAq bnApCj4gK3sKPiArCXN0cnVjdCBvZl9waGFuZGxlX2FyZ3MgYXJnczsKPiArCXVuc2lnbmVkIGlu dCBpbmRleDsKPiArCWludCByZXQ7Cj4gKwo+ICsJcmV0ID0gb2ZfcHJvcGVydHlfbWF0Y2hfc3Ry aW5nKG5wLCAiaW50ZXJjb25uZWN0LW5hbWVzIiwgImRtYSIpOwo+ICsJaWYgKHJldCA8IDApCj4g KwkJcmV0dXJuIG9mX2dldF9wYXJlbnQobnApOwoKRG9uJ3QgeW91IG5lZWQgdG8gcHJvcGFnYXRl IHJldCB0byBpbmRleCBoZXJlPwoKUm9iaW4uCgo+ICsKPiArCXJldCA9IG9mX3BhcnNlX3BoYW5k bGVfd2l0aF9hcmdzKG5wLCAiaW50ZXJjb25uZWN0cyIsCj4gKwkJCQkJICIjaW50ZXJjb25uZWN0 LWNlbGxzIiwKPiArCQkJCQkgaW5kZXgsICZhcmdzKTsKPiArCWlmIChyZXQgPCAwKQo+ICsJCXJl dHVybiBvZl9nZXRfcGFyZW50KG5wKTsKPiArCj4gKwlyZXR1cm4gb2Zfbm9kZV9nZXQoYXJncy5u cCk7Cj4gK30KPiArCj4gICB1NjQgb2ZfdHJhbnNsYXRlX2RtYV9hZGRyZXNzKHN0cnVjdCBkZXZp Y2Vfbm9kZSAqZGV2LCBjb25zdCBfX2JlMzIgKmluX2FkZHIpCj4gICB7Cj4gKwlzdHJ1Y3QgZGV2 aWNlX25vZGUgKnBhcmVudDsKPiAgIAlzdHJ1Y3QgZGV2aWNlX25vZGUgKmhvc3Q7Cj4gICAJdTY0 IHJldDsKPiAgIAo+IC0JcmV0ID0gX19vZl90cmFuc2xhdGVfYWRkcmVzcyhkZXYsIE5VTEwsIGlu X2FkZHIsICJkbWEtcmFuZ2VzIiwgJmhvc3QpOwo+ICsJcGFyZW50ID0gX19vZl9nZXRfZG1hX3Bh cmVudChkZXYpOwo+ICsJcmV0ID0gX19vZl90cmFuc2xhdGVfYWRkcmVzcyhkZXYsIHBhcmVudCwg aW5fYWRkciwgImRtYS1yYW5nZXMiLCAmaG9zdCk7Cj4gKwlvZl9ub2RlX3B1dChwYXJlbnQpOwo+ ICAgCj4gICAJaWYgKGhvc3QpIHsKPiAgIAkJb2Zfbm9kZV9wdXQoaG9zdCk7Cj4gQEAgLTkxMSw5 ICs5MzMsMTUgQEAgaW50IG9mX2RtYV9nZXRfcmFuZ2Uoc3RydWN0IGRldmljZV9ub2RlICpucCwg dTY0ICpkbWFfYWRkciwgdTY0ICpwYWRkciwgdTY0ICpzaXoKPiAgIAkJcmV0dXJuIC1FSU5WQUw7 Cj4gICAKPiAgIAl3aGlsZSAoMSkgewo+ICsJCXN0cnVjdCBkZXZpY2Vfbm9kZSAqcGFyZW50Owo+ ICsKPiAgIAkJbmFkZHIgPSBvZl9uX2FkZHJfY2VsbHMobm9kZSk7Cj4gICAJCW5zaXplID0gb2Zf bl9zaXplX2NlbGxzKG5vZGUpOwo+IC0JCW5vZGUgPSBvZl9nZXRfbmV4dF9wYXJlbnQobm9kZSk7 Cj4gKwo+ICsJCXBhcmVudCA9IF9fb2ZfZ2V0X2RtYV9wYXJlbnQobm9kZSk7Cj4gKwkJb2Zfbm9k ZV9wdXQobm9kZSk7Cj4gKwo+ICsJCW5vZGUgPSBwYXJlbnQ7Cj4gICAJCWlmICghbm9kZSkKPiAg IAkJCWJyZWFrOwo+ICAgCj4gCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbA==