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: [2/3] k3dma: add support to reserved minimum channels From: Vinod Koul Message-Id: <20180628060239.GO22377@vkoul-mobl> Date: Thu, 28 Jun 2018 11:32:39 +0530 To: Guodong Xu Cc: robh+dt@kernel.org, mark.rutland@arm.com, dan.j.williams@intel.com, liyu65@hisilicon.com, suzhuangluan@hisilicon.com, xuhongtao8@hisilicon.com, zhongkaihua@huawei.com, xuezhiliang@hisilicon.com, xupeng7@huawei.com, sunliang10@huawei.com, fengbaopeng@hisilicon.com, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: T24gMjItMDYtMTgsIDExOjI0LCBHdW9kb25nIFh1IHdyb3RlOgo+IEZyb206IExpIFl1IDxsaXl1 NjVAaGlzaWxpY29uLmNvbT4KPiAKPiBPbiBrMyBzZXJpZXMgb2YgU29DLCBETUEgY29udHJvbGxl ciByZXNlcnZlcyBzb21lIGNoYW5uZWxzIGZvcgo+IG90aGVyIG9uLWNoaXAgY29wcm9jZXNzb3Jz LiBCeSBhZGRpbmcgc3VwcG9ydCB0byBkbWFfbWluX2NoYW4sIGtlcm5lbAo+IHdpbGwgbm90IGJl IGFibGUgdG8gdXNlIHRoZXNlIHJlc2VydmVkIGNoYW5uZWxzLgo+IAo+IE9uZSBleGFtcGxlIGlz IG9uIEhpMzY2MCBwbGF0Zm9ybSwgY2hhbm5lbCAwIGlzIHJlc2VydmVkIHRvIGxwbTMuCj4gCj4g UGxlYXNlIGFsc28gcmVmZXIgdG8gRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL2Rt YS9rM2RtYS50eHQKCmFuZCBpZiBzb21lIG90aGVyIHBsYXRmb3JtIGhhcyBjaGFubmVsIFggbWFy a2VkIGZvciBjby1wcm9jZXNzb3IsIG1heWJlCmEgbGFzdCBjaGFubmVsIG9yIHNvbWV0aGluZyBp biBtaWRkbGUsIGhvdyB3aWxsIHRoaXMgd29yayB0aGVuPwoKSSBhbSB0aGlua2luZyB0aGlzIHNo b3VsZCBiZSBhIG1hc2ssIHJhdGhlciB0aGFuIG1pbi4KCj4gCj4gU2lnbmVkLW9mZi1ieTogTGkg WXUgPGxpeXU2NUBoaXNpbGljb24uY29tPgo+IFNpZ25lZC1vZmYtYnk6IEd1b2RvbmcgWHUgPGd1 b2RvbmcueHVAbGluYXJvLm9yZz4KPiAtLS0KPiAgZHJpdmVycy9kbWEvazNkbWEuYyB8IDEzICsr KysrKysrLS0tLS0KPiAgMSBmaWxlIGNoYW5nZWQsIDggaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlv bnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvazNkbWEuYyBiL2RyaXZlcnMvZG1h L2szZG1hLmMKPiBpbmRleCBmYTMxY2NjYmUwNGYuLjEzY2VjMTI3NDJlMyAxMDA2NDQKPiAtLS0g YS9kcml2ZXJzL2RtYS9rM2RtYS5jCj4gKysrIGIvZHJpdmVycy9kbWEvazNkbWEuYwo+IEBAIC0x MTMsNiArMTEzLDcgQEAgc3RydWN0IGszX2RtYV9kZXYgewo+ICAJc3RydWN0IGRtYV9wb29sCQkq cG9vbDsKPiAgCXUzMgkJCWRtYV9jaGFubmVsczsKPiAgCXUzMgkJCWRtYV9yZXF1ZXN0czsKPiAr CXUzMgkJCWRtYV9taW5fY2hhbjsKPiAgCXVuc2lnbmVkIGludAkJaXJxOwo+ICB9Owo+ICAKPiBA QCAtMzA5LDcgKzMxMCw3IEBAIHN0YXRpYyB2b2lkIGszX2RtYV90YXNrbGV0KHVuc2lnbmVkIGxv bmcgYXJnKQo+ICAKPiAgCS8qIGNoZWNrIG5ldyBjaGFubmVsIHJlcXVlc3QgaW4gZC0+Y2hhbl9w ZW5kaW5nICovCj4gIAlzcGluX2xvY2tfaXJxKCZkLT5sb2NrKTsKPiAtCWZvciAocGNoID0gMDsg cGNoIDwgZC0+ZG1hX2NoYW5uZWxzOyBwY2grKykgewo+ICsJZm9yIChwY2ggPSBkLT5kbWFfbWlu X2NoYW47IHBjaCA8IGQtPmRtYV9jaGFubmVsczsgcGNoKyspIHsKPiAgCQlwID0gJmQtPnBoeVtw Y2hdOwo+ICAKPiAgCQlpZiAocC0+dmNoYW4gPT0gTlVMTCAmJiAhbGlzdF9lbXB0eSgmZC0+Y2hh bl9wZW5kaW5nKSkgewo+IEBAIC0zMjYsNyArMzI3LDcgQEAgc3RhdGljIHZvaWQgazNfZG1hX3Rh c2tsZXQodW5zaWduZWQgbG9uZyBhcmcpCj4gIAl9Cj4gIAlzcGluX3VubG9ja19pcnEoJmQtPmxv Y2spOwo+ICAKPiAtCWZvciAocGNoID0gMDsgcGNoIDwgZC0+ZG1hX2NoYW5uZWxzOyBwY2grKykg ewo+ICsJZm9yIChwY2ggPSBkLT5kbWFfbWluX2NoYW47IHBjaCA8IGQtPmRtYV9jaGFubmVsczsg cGNoKyspIHsKPiAgCQlpZiAocGNoX2FsbG9jICYgKDEgPDwgcGNoKSkgewo+ICAJCQlwID0gJmQt PnBoeVtwY2hdOwo+ICAJCQljID0gcC0+dmNoYW47Cj4gQEAgLTgyNSw2ICs4MjYsOCBAQCBzdGF0 aWMgaW50IGszX2RtYV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpvcCkKPiAgCQkJCSJk bWEtY2hhbm5lbHMiLCAmZC0+ZG1hX2NoYW5uZWxzKTsKPiAgCQlvZl9wcm9wZXJ0eV9yZWFkX3Uz MigoJm9wLT5kZXYpLT5vZl9ub2RlLAo+ICAJCQkJImRtYS1yZXF1ZXN0cyIsICZkLT5kbWFfcmVx dWVzdHMpOwo+ICsJCW9mX3Byb3BlcnR5X3JlYWRfdTMyKCgmb3AtPmRldiktPm9mX25vZGUsCj4g KwkJCQkiZG1hLW1pbi1jaGFuIiwgJmQtPmRtYV9taW5fY2hhbik7Cj4gIAl9Cj4gIAo+ICAJZC0+ Y2xrID0gZGV2bV9jbGtfZ2V0KCZvcC0+ZGV2LCBOVUxMKTsKPiBAQCAtODQ4LDEyICs4NTEsMTIg QEAgc3RhdGljIGludCBrM19kbWFfcHJvYmUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqb3ApCj4g IAkJcmV0dXJuIC1FTk9NRU07Cj4gIAo+ICAJLyogaW5pdCBwaHkgY2hhbm5lbCAqLwo+IC0JZC0+ cGh5ID0gZGV2bV9rY2FsbG9jKCZvcC0+ZGV2LAo+IC0JCWQtPmRtYV9jaGFubmVscywgc2l6ZW9m KHN0cnVjdCBrM19kbWFfcGh5KSwgR0ZQX0tFUk5FTCk7Cj4gKwlkLT5waHkgPSBkZXZtX2tjYWxs b2MoJm9wLT5kZXYsIChkLT5kbWFfY2hhbm5lbHMgLSBkLT5kbWFfbWluX2NoYW4pLAo+ICsJCQlz aXplb2Yoc3RydWN0IGszX2RtYV9waHkpLCBHRlBfS0VSTkVMKTsKPiAgCWlmIChkLT5waHkgPT0g TlVMTCkKPiAgCQlyZXR1cm4gLUVOT01FTTsKPiAgCj4gLQlmb3IgKGkgPSAwOyBpIDwgZC0+ZG1h X2NoYW5uZWxzOyBpKyspIHsKPiArCWZvciAoaSA9IGQtPmRtYV9taW5fY2hhbjsgaSA8IGQtPmRt YV9jaGFubmVsczsgaSsrKSB7Cj4gIAkJc3RydWN0IGszX2RtYV9waHkgKnAgPSAmZC0+cGh5W2ld Owo+ICAKPiAgCQlwLT5pZHggPSBpOwo+IC0tIAo+IDIuMTcuMQo=