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: [v5,1/5] dmaengine: imx-sdma: add clock ratio 1:1 check From: Angus Ainslie Message-Id: <20190128060840.31695-2-angus@akkea.ca> Date: Sun, 27 Jan 2019 23:08:36 -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 QGFra2VhLmNhPgotLS0KIGRyaXZlcnMvZG1hL2lteC1zZG1hLmMgfCAxOCArKysrKysrKysrKysr Ky0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNCBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQoK ZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMgYi9kcml2ZXJzL2RtYS9pbXgtc2Rt YS5jCmluZGV4IDBiM2E2N2ZmOGU4Mi4uNzU3ZmFkMmZiZmFlIDEwMDY0NAotLS0gYS9kcml2ZXJz L2RtYS9pbXgtc2RtYS5jCisrKyBiL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKQEAgLTQ0MCw2ICs0 NDAsOCBAQCBzdHJ1Y3Qgc2RtYV9lbmdpbmUgewogCXVuc2lnbmVkIGludAkJCWlycTsKIAlkbWFf YWRkcl90CQkJYmQwX3BoeXM7CiAJc3RydWN0IHNkbWFfYnVmZmVyX2Rlc2NyaXB0b3IJKmJkMDsK KwkvKiBjbG9jayByYXRpbyBmb3IgQUhCOlNETUEgY29yZS4gMToxIGlzIDEsIDI6MSBpcyAwKi8K Kwlib29sCQkJCWNsa19yYXRpbzsKIH07CiAKIHN0YXRpYyBpbnQgc2RtYV9jb25maWdfd3JpdGUo c3RydWN0IGRtYV9jaGFuICpjaGFuLApAQCAtNjYyLDggKzY2NCwxMSBAQCBzdGF0aWMgaW50IHNk bWFfcnVuX2NoYW5uZWwwKHN0cnVjdCBzZG1hX2VuZ2luZSAqc2RtYSkKIAkJZGV2X2VycihzZG1h LT5kZXYsICJUaW1lb3V0IHdhaXRpbmcgZm9yIENIMCByZWFkeVxuIik7CiAKIAkvKiBTZXQgYml0 cyBvZiBDT05GSUcgcmVnaXN0ZXIgd2l0aCBkeW5hbWljIGNvbnRleHQgc3dpdGNoaW5nICovCi0J aWYgKHJlYWRsKHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKSA9PSAwKQotCQl3cml0ZWxfcmVs YXhlZChTRE1BX0hfQ09ORklHX0NTTSwgc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpOworCXJl ZyA9IHJlYWRsKHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKTsKKwlpZiAoKHJlZyAmIFNETUFf SF9DT05GSUdfQ1NNKSA9PSAwKSB7CisJCXJlZyB8PSBTRE1BX0hfQ09ORklHX0NTTTsKKwkJd3Jp dGVsX3JlbGF4ZWQocmVnLCBzZG1hLT5yZWdzICsgU0RNQV9IX0NPTkZJRyk7CisJfQogCiAJcmV0 dXJuIHJldDsKIH0KQEAgLTE4NDAsNiArMTg0NSw5IEBAIHN0YXRpYyBpbnQgc2RtYV9pbml0KHN0 cnVjdCBzZG1hX2VuZ2luZSAqc2RtYSkKIAlpZiAocmV0KQogCQlnb3RvIGRpc2FibGVfY2xrX2lw ZzsKIAorCWlmIChjbGtfZ2V0X3JhdGUoc2RtYS0+Y2xrX2FoYikgPT0gY2xrX2dldF9yYXRlKHNk bWEtPmNsa19pcGcpKQorCQlzZG1hLT5jbGtfcmF0aW8gPSAxOworCiAJLyogQmUgc3VyZSBTRE1B IGhhcyBub3Qgc3RhcnRlZCB5ZXQgKi8KIAl3cml0ZWxfcmVsYXhlZCgwLCBzZG1hLT5yZWdzICsg U0RNQV9IX0MwUFRSKTsKIApAQCAtMTg4MCw4ICsxODg4LDEwIEBAIHN0YXRpYyBpbnQgc2RtYV9p bml0KHN0cnVjdCBzZG1hX2VuZ2luZSAqc2RtYSkKIAl3cml0ZWxfcmVsYXhlZCgweDQwNTAsIHNk bWEtPnJlZ3MgKyBTRE1BX0NITjBBRERSKTsKIAogCS8qIFNldCBiaXRzIG9mIENPTkZJRyByZWdp c3RlciBidXQgd2l0aCBzdGF0aWMgY29udGV4dCBzd2l0Y2hpbmcgKi8KLQkvKiBGSVhNRTogQ2hl Y2sgd2hldGhlciB0byBzZXQgQUNSIGJpdCBkZXBlbmRpbmcgb24gY2xvY2sgcmF0aW9zICovCi0J d3JpdGVsX3JlbGF4ZWQoMCwgc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpOworCWlmIChzZG1h LT5jbGtfcmF0aW8pCisJCXdyaXRlbF9yZWxheGVkKFNETUFfSF9DT05GSUdfQUNSLCBzZG1hLT5y ZWdzICsgU0RNQV9IX0NPTkZJRyk7CisJZWxzZQorCQl3cml0ZWxfcmVsYXhlZCgwLCBzZG1hLT5y ZWdzICsgU0RNQV9IX0NPTkZJRyk7CiAKIAl3cml0ZWxfcmVsYXhlZChjY2JfcGh5cywgc2RtYS0+ cmVncyArIFNETUFfSF9DMFBUUik7CiAK