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: [v4,1/5] dmaengine: imx-sdma: add clock ratio 1:1 check From: Angus Ainslie Message-Id: <20190125025528.15645-2-angus@akkea.ca> Date: Thu, 24 Jan 2019 19:55:24 -0700 To: angus@akkea.ca Cc: angus.ainslie@puri.sm, Vinod Koul , dmaengine@vger.kernel.org, NXP Linux Team , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Lucas Stach , Daniel Baluta List-ID: T24gaS5teDggbXNjYWxlIEIwIGNoaXAsIEFIQi9TRE1BIGNsb2NrIHJhdGlvIDI6MSBjYW4ndCBi ZSBzdXBwb3J0dGVkLApzaW5jZSBTRE1BIGNsb2NrIHJhdGlvIGhhcyB0byBiZSBpbmNyZWFzZWQg dG8gMjUwTWh6LCBBSEIgY2FuJ3QgcmVhY2gKdG8gNTAwTWh6LCBzbyB1c2UgMToxIGluc3RlYWQu CgpCYXNlZCBvbiBOWFAgY29tbWl0IE1MSy0xNjg0MS0xIGJ5IFJvYmluIEdvbmcgPHlpYmluLmdv bmdAbnhwLmNvbT4KClNpZ25lZC1vZmYtYnk6IEFuZ3VzIEFpbnNsaWUgKFB1cmlzbSkgPGFuZ3Vz QGFra2VhLmNhPgotLS0KIGRyaXZlcnMvZG1hL2lteC1zZG1hLmMgfCAyMSArKysrKysrKysrKysr KysrKy0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNyBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygt KQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMgYi9kcml2ZXJzL2RtYS9pbXgt c2RtYS5jCmluZGV4IDBiM2E2N2ZmOGU4Mi4uNWU1ZWYwYjVhOTczIDEwMDY0NAotLS0gYS9kcml2 ZXJzL2RtYS9pbXgtc2RtYS5jCisrKyBiL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKQEAgLTQ0MCw2 ICs0NDAsOCBAQCBzdHJ1Y3Qgc2RtYV9lbmdpbmUgewogCXVuc2lnbmVkIGludAkJCWlycTsKIAlk bWFfYWRkcl90CQkJYmQwX3BoeXM7CiAJc3RydWN0IHNkbWFfYnVmZmVyX2Rlc2NyaXB0b3IJKmJk MDsKKwkvKiBjbG9jayByYXRpbyBmb3IgQUhCOlNETUEgY29yZS4gMToxIGlzIDEsIDI6MSBpcyAw Ki8KKwlib29sCQkJCWNsa19yYXRpbzsKIH07CiAKIHN0YXRpYyBpbnQgc2RtYV9jb25maWdfd3Jp dGUoc3RydWN0IGRtYV9jaGFuICpjaGFuLApAQCAtNjYyLDggKzY2NCwxNCBAQCBzdGF0aWMgaW50 IHNkbWFfcnVuX2NoYW5uZWwwKHN0cnVjdCBzZG1hX2VuZ2luZSAqc2RtYSkKIAkJZGV2X2Vycihz ZG1hLT5kZXYsICJUaW1lb3V0IHdhaXRpbmcgZm9yIENIMCByZWFkeVxuIik7CiAKIAkvKiBTZXQg Yml0cyBvZiBDT05GSUcgcmVnaXN0ZXIgd2l0aCBkeW5hbWljIGNvbnRleHQgc3dpdGNoaW5nICov Ci0JaWYgKHJlYWRsKHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKSA9PSAwKQotCQl3cml0ZWxf cmVsYXhlZChTRE1BX0hfQ09ORklHX0NTTSwgc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpOwor CWlmICgocmVhZGwoc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpICYgflNETUFfSF9DT05GSUdf QUNSKSA9PSAwKSB7CisJCXJlZyA9IFNETUFfSF9DT05GSUdfQ1NNOworCisJCWlmIChzZG1hLT5j bGtfcmF0aW8pCisJCQlyZWcgfD0gU0RNQV9IX0NPTkZJR19BQ1I7CisKKwkJd3JpdGVsX3JlbGF4 ZWQocmVnLCBzZG1hLT5yZWdzICsgU0RNQV9IX0NPTkZJRyk7CisJfQogCiAJcmV0dXJuIHJldDsK IH0KQEAgLTE4NDAsNiArMTg0OCw5IEBAIHN0YXRpYyBpbnQgc2RtYV9pbml0KHN0cnVjdCBzZG1h X2VuZ2luZSAqc2RtYSkKIAlpZiAocmV0KQogCQlnb3RvIGRpc2FibGVfY2xrX2lwZzsKIAorCWlm IChjbGtfZ2V0X3JhdGUoc2RtYS0+Y2xrX2FoYikgPT0gY2xrX2dldF9yYXRlKHNkbWEtPmNsa19p cGcpKQorCQlzZG1hLT5jbGtfcmF0aW8gPSAxOworCiAJLyogQmUgc3VyZSBTRE1BIGhhcyBub3Qg c3RhcnRlZCB5ZXQgKi8KIAl3cml0ZWxfcmVsYXhlZCgwLCBzZG1hLT5yZWdzICsgU0RNQV9IX0Mw UFRSKTsKIApAQCAtMTg4MCw4ICsxODkxLDEwIEBAIHN0YXRpYyBpbnQgc2RtYV9pbml0KHN0cnVj dCBzZG1hX2VuZ2luZSAqc2RtYSkKIAl3cml0ZWxfcmVsYXhlZCgweDQwNTAsIHNkbWEtPnJlZ3Mg KyBTRE1BX0NITjBBRERSKTsKIAogCS8qIFNldCBiaXRzIG9mIENPTkZJRyByZWdpc3RlciBidXQg d2l0aCBzdGF0aWMgY29udGV4dCBzd2l0Y2hpbmcgKi8KLQkvKiBGSVhNRTogQ2hlY2sgd2hldGhl ciB0byBzZXQgQUNSIGJpdCBkZXBlbmRpbmcgb24gY2xvY2sgcmF0aW9zICovCi0Jd3JpdGVsX3Jl bGF4ZWQoMCwgc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpOworCWlmIChzZG1hLT5jbGtfcmF0 aW8pCisJCXdyaXRlbF9yZWxheGVkKFNETUFfSF9DT05GSUdfQUNSLCBzZG1hLT5yZWdzICsgU0RN QV9IX0NPTkZJRyk7CisJZWxzZQorCQl3cml0ZWxfcmVsYXhlZCgwLCBzZG1hLT5yZWdzICsgU0RN QV9IX0NPTkZJRyk7CiAKIAl3cml0ZWxfcmVsYXhlZChjY2JfcGh5cywgc2RtYS0+cmVncyArIFNE TUFfSF9DMFBUUik7CiAK