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: dmaengine: pl330: introduce debugfs interface From: Vinod Koul Message-Id: <20190315170059.GF5348@vkoul-mobl> Date: Fri, 15 Mar 2019 22:30:59 +0530 To: Katsuhiro Suzuki Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: T24gMTUtMDMtMTksIDAzOjQ5LCBLYXRzdWhpcm8gU3V6dWtpIHdyb3RlOgo+IFRoaXMgcGF0Y2gg YWRkcyBkZWJ1Z2ZzIGludGVyZmFjZSB0byBzaG93IHRoZSByZWxhdGlvbnNoaXAgYmV0d2Vlbgo+ IERNQSB0aHJlYWRzIChoYXJkd2FyZSByZXNvdXJjZSBmb3IgdHJhbnNmZXJyaW5nIGRhdGEpIGFu ZCBETUEKPiBjaGFubmVsIElEIG9mIERNQSBzbGF2ZS4KPiAKPiBUeXBpY2FsbHksIFBMMzMwIGhh cyBtYW55IHNsYXZlcyB0aGFuIG51bWJlciBvZiBETUEgdGhyZWFkcy4KPiBTbyBzb21ldGltZXMg UEwzMzAgY2Fubm90IGFsbG9jYXRlIERNQSB0aHJlYWRzIGZvciBhbGwgc2xhdmVzIGV2ZW4KPiBp ZiBhbiB1c2VyIHNwZWNpZnkgRE1BIGNoYW5uZWwgSUQgaW4gZGV2aWNldHJlZS4gVGhpcyBpbnRl cmZhY2Ugd2lsbAoKYSB1c2VyIDopCgo+IGJlIHVzZWZ1bCBmb3IgY2hlY2tpbmcgdGhhdCBETUEg dGhyZWFkcyBhcmUgYWxsb2NhdGVkIG9yIG5vdC4KPiAKPiBCZWxvdyBpcyBhbiBvdXRwdXQgc2Ft cGxlOgo+IAo+ICQgc3VkbyBjYXQgL3N5cy9rZXJuZWwvZGVidWcvZmYxZjAwMDAuZG1hYwo+IFBM MzMwIHBoeXNpY2FsIGNoYW5uZWxzOgo+IFRIUkVBRDogICAgICAgICBDSEFOTkVMOgo+IC0tLS0t LS0tICAgICAgICAtLS0tLQo+IDAgICAgICAgICAgICAgICA4Cj4gMSAgICAgICAgICAgICAgIDkK PiAyICAgICAgICAgICAgICAgMTEKPiAzICAgICAgICAgICAgICAgMTIKPiA0ICAgICAgICAgICAg ICAgMTQKPiA1ICAgICAgICAgICAgICAgMTUKPiA2ICAgICAgICAgICAgICAgMTAKPiA3ICAgICAg ICAgICAgICAgLS0KPiAKPiBTaWduZWQtb2ZmLWJ5OiBLYXRzdWhpcm8gU3V6dWtpIDxrYXRzdWhp cm9Aa2F0c3VzdGVyLm5ldD4KPiAtLS0KPiAgZHJpdmVycy9kbWEvcGwzMzAuYyB8IDUxICsrKysr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKwo+ICAxIGZpbGUgY2hhbmdl ZCwgNTEgaW5zZXJ0aW9ucygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS9wbDMzMC5j IGIvZHJpdmVycy9kbWEvcGwzMzAuYwo+IGluZGV4IGVlYzc5ZmRmMjdhNS4uYWFiNzE4NjM3NTdj IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL3BsMzMwLmMKPiArKysgYi9kcml2ZXJzL2RtYS9w bDMzMC5jCj4gQEAgLTExLDYgKzExLDcgQEAKPiAgICogKGF0IHlvdXIgb3B0aW9uKSBhbnkgbGF0 ZXIgdmVyc2lvbi4KPiAgICovCj4gIAo+ICsjaW5jbHVkZSA8bGludXgvZGVidWdmcy5oPgo+ICAj aW5jbHVkZSA8bGludXgva2VybmVsLmg+Cj4gICNpbmNsdWRlIDxsaW51eC9pby5oPgo+ICAjaW5j bHVkZSA8bGludXgvaW5pdC5oPgo+IEBAIC0yODk2LDYgKzI4OTcsNTUgQEAgc3RhdGljIGlycXJl dHVybl90IHBsMzMwX2lycV9oYW5kbGVyKGludCBpcnEsIHZvaWQgKmRhdGEpCj4gIAlCSVQoRE1B X1NMQVZFX0JVU1dJRFRIXzRfQllURVMpIHwgXAo+ICAJQklUKERNQV9TTEFWRV9CVVNXSURUSF84 X0JZVEVTKQo+ICAKPiArI2lmZGVmIENPTkZJR19ERUJVR19GUwo+ICtzdGF0aWMgaW50IHBsMzMw X2RlYnVnZnNfc2hvdyhzdHJ1Y3Qgc2VxX2ZpbGUgKnMsIHZvaWQgKmRhdGEpCj4gK3sKPiArCXN0 cnVjdCBwbDMzMF9kbWFjICpwbDMzMCA9IHMtPnByaXZhdGU7Cj4gKwlpbnQgY2hhbnMsIHBjaHMs IGNoLCBwciwgZm91bmQ7Cj4gKwo+ICsJY2hhbnMgPSBwbDMzMC0+cGNmZy5udW1fY2hhbjsKPiAr CXBjaHMgPSBwbDMzMC0+bnVtX3BlcmlwaGVyYWxzOwo+ICsKPiArCXNlcV9wdXRzKHMsICJQTDMz MCBwaHlzaWNhbCBjaGFubmVsczpcbiIpOwo+ICsJc2VxX3B1dHMocywgIlRIUkVBRDpcdFx0Q0hB Tk5FTDpcbiIpOwo+ICsJc2VxX3B1dHMocywgIi0tLS0tLS0tXHQtLS0tLVxuIik7Cj4gKwlmb3Ig KGNoID0gMDsgY2ggPCBjaGFuczsgY2grKykgewo+ICsJCXN0cnVjdCBwbDMzMF90aHJlYWQgKnRo cmQgPSAmcGwzMzAtPmNoYW5uZWxzW2NoXTsKPiArCj4gKwkJZm91bmQgPSAtMTsKCmZvdW5kIGNh biBiZSB1bmluaXRpYWxpemVkIGlmIHdlIHNraXAgdGhpcyBmb3IsIHdoaWNoIHNob3VsZCBub3Qg YmUgYW4KaXNzdWUgYXMgY2hhbnM+IDAhCgo+ICsJCWZvciAocHIgPSAwOyBwciA8IHBjaHM7IHBy KyspIHsKPiArCQkJc3RydWN0IGRtYV9wbDMzMF9jaGFuICpwY2ggPSAmcGwzMzAtPnBlcmlwaGVy YWxzW3ByXTsKPiArCj4gKwkJCWlmICghcGNoLT50aHJlYWQgfHwgdGhyZC0+aWQgIT0gcGNoLT50 aHJlYWQtPmlkKQo+ICsJCQkJY29udGludWU7Cj4gKwo+ICsJCQlmb3VuZCA9IHByOwo+ICsJCX0K PiArCj4gKwkJc2VxX3ByaW50ZihzLCAiJWRcdFx0IiwgdGhyZC0+aWQpOwo+ICsJCWlmIChmb3Vu ZCA9PSAtMSkKPiArCQkJc2VxX3B1dHMocywgIi0tXG4iKTsKPiArCQllbHNlCj4gKwkJCXNlcV9w cmludGYocywgIiVkXG4iLCBmb3VuZCk7Cj4gKwl9Cj4gKwo+ICsJcmV0dXJuIDA7Cj4gK30KPiAr Cj4gK0RFRklORV9TSE9XX0FUVFJJQlVURShwbDMzMF9kZWJ1Z2ZzKTsKPiArCj4gK3N0YXRpYyBp bmxpbmUgdm9pZCBpbml0X3BsMzMwX2RlYnVnZnMoc3RydWN0IHBsMzMwX2RtYWMgKnBsMzMwKQo+ ICt7Cj4gKwlkZWJ1Z2ZzX2NyZWF0ZV9maWxlKGRldl9uYW1lKHBsMzMwLT5kZG1hLmRldiksCj4g KwkJCSAgICBTX0lGUkVHIHwgU19JUlVHTywgTlVMTCwgcGwzMzAsCgphcmUgd2Ugbm90IHN1cHBv c2VkIHRvIHVzZSBvY3RhbCBwZXJtaXNzaW9ucz8KCj4gKwkJCSAgICAmcGwzMzBfZGVidWdmc19m b3BzKTsKPiArfQo+ICsjZWxzZQo+ICtzdGF0aWMgaW5saW5lIHZvaWQgaW5pdF9wbDMzMF9kZWJ1 Z2ZzKHN0cnVjdCBwbDMzMF9kbWFjICpwbDMzMCkKPiArewo+ICt9Cj4gKyNlbmRpZgo+ICsKPiAg LyoKPiAgICogUnVudGltZSBQTSBjYWxsYmFja3MgYXJlIHByb3ZpZGVkIGJ5IGFtYmEvYnVzLmMg ZHJpdmVyLgo+ICAgKgo+IEBAIC0zMDgyLDYgKzMxMzIsNyBAQCBwbDMzMF9wcm9iZShzdHJ1Y3Qg YW1iYV9kZXZpY2UgKmFkZXYsIGNvbnN0IHN0cnVjdCBhbWJhX2lkICppZCkKPiAgCQlkZXZfZXJy KCZhZGV2LT5kZXYsICJ1bmFibGUgdG8gc2V0IHRoZSBzZWcgc2l6ZVxuIik7Cj4gIAo+ICAKPiAr CWluaXRfcGwzMzBfZGVidWdmcyhwbDMzMCk7Cj4gIAlkZXZfaW5mbygmYWRldi0+ZGV2LAo+ICAJ CSJMb2FkZWQgZHJpdmVyIGZvciBQTDMzMCBETUFDLSV4XG4iLCBhZGV2LT5wZXJpcGhpZCk7Cj4g IAlkZXZfaW5mbygmYWRldi0+ZGV2LAo+IC0tIAo+IDIuMjAuMQo=