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] dma: imx-sdma: add clock ratio 1:1 check From: Angus Ainslie Message-Id: <20190120015851.11797-3-angus@akkea.ca> Date: Sat, 19 Jan 2019 18:58:50 -0700 To: angus@akkea.ca Cc: Vinod Koul , dmaengine@vger.kernel.org, NXP Linux Team , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-ID: T24gaS5teDggbXNjYWxlIEIwIGNoaXAsIEFIQi9TRE1BIGNsb2NrIHJhdGlvIDI6MSBjYW4ndCBi ZSBzdXBwb3J0dGVkLApzaW5jZSBTRE1BIGNsb2NrIHJhdGlvIGhhcyB0byBiZSBpbmNyZWFzZWQg dG8gMjUwTWh6LCBBSEIgY2FuJ3QgcmVhY2gKdG8gNTAwTWh6LCBzbyB1c2UgMToxIGluc3RlYWQu CgpiYXNlZCBvbiBOWFAgY29tbWl0IE1MSy0xNjg0MS0xCgpTaWduZWQtb2ZmLWJ5OiBBbmd1cyBB aW5zbGllIChQdXJpc20pIDxhbmd1c0Bha2tlYS5jYT4KLS0tCiAuLi4vZGV2aWNldHJlZS9iaW5k aW5ncy9kbWEvZnNsLWlteC1zZG1hLnR4dCAgfCAgMiArLQogZHJpdmVycy9kbWEvaW14LXNkbWEu YyAgICAgICAgICAgICAgICAgICAgICAgIHwgMjAgKysrKysrKysrKysrKysrLS0tLQogMiBmaWxl cyBjaGFuZ2VkLCAxNyBpbnNlcnRpb25zKCspLCA1IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBh L0RvY3VtZW50YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy9kbWEvZnNsLWlteC1zZG1hLnR4dCBi L0RvY3VtZW50YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy9kbWEvZnNsLWlteC1zZG1hLnR4dApp bmRleCAzYzlhNTdhODQ0M2IuLmIzZmJhYzQwMWJkMCAxMDA2NDQKLS0tIGEvRG9jdW1lbnRhdGlv bi9kZXZpY2V0cmVlL2JpbmRpbmdzL2RtYS9mc2wtaW14LXNkbWEudHh0CisrKyBiL0RvY3VtZW50 YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy9kbWEvZnNsLWlteC1zZG1hLnR4dApAQCAtNjcsNyAr NjcsNyBAQCBPcHRpb25hbCBwcm9wZXJ0aWVzOgogICAgIHJlZyBpcyB0aGUgR1BSIHJlZ2lzdGVy IG9mZnNldC4KICAgICBzaGlmdCBpcyB0aGUgYml0IHBvc2l0aW9uIGluc2lkZSB0aGUgR1BSIHJl Z2lzdGVyLgogICAgIHZhbCBpcyB0aGUgdmFsdWUgb2YgdGhlIGJpdCAoMCBvciAxKS4KLQorLSBm c2wscmF0aW8tMS0xOiBBSEIvU0RNQSBjb3JlIGNsb2NrIHJhdGlvbiAxOjEsIDI6MSB3aXRob3V0 IHRoaXMuCiBFeGFtcGxlczoKIAogc2RtYUA4M2ZiMDAwMCB7CmRpZmYgLS1naXQgYS9kcml2ZXJz L2RtYS9pbXgtc2RtYS5jIGIvZHJpdmVycy9kbWEvaW14LXNkbWEuYwppbmRleCAwNjRiYzUwZDFl OTkuLjYxNmZmZDZiMzAxZSAxMDA2NDQKLS0tIGEvZHJpdmVycy9kbWEvaW14LXNkbWEuYworKysg Yi9kcml2ZXJzL2RtYS9pbXgtc2RtYS5jCkBAIC00NDAsNiArNDQwLDggQEAgc3RydWN0IHNkbWFf ZW5naW5lIHsKIAl1bnNpZ25lZCBpbnQJCQlpcnE7CiAJZG1hX2FkZHJfdAkJCWJkMF9waHlzOwog CXN0cnVjdCBzZG1hX2J1ZmZlcl9kZXNjcmlwdG9yCSpiZDA7CisJLyogY2xvY2sgcmF0aW8gZm9y IEFIQjpTRE1BIGNvcmUuIDE6MSBpcyAxLCAyOjEgaXMgMCovCisJYm9vbAkJCQljbGtfcmF0aW87 CiB9OwogCiBzdGF0aWMgaW50IHNkbWFfY29uZmlnX3dyaXRlKHN0cnVjdCBkbWFfY2hhbiAqY2hh biwKQEAgLTY2Miw4ICs2NjQsMTQgQEAgc3RhdGljIGludCBzZG1hX3J1bl9jaGFubmVsMChzdHJ1 Y3Qgc2RtYV9lbmdpbmUgKnNkbWEpCiAJCWRldl9lcnIoc2RtYS0+ZGV2LCAiVGltZW91dCB3YWl0 aW5nIGZvciBDSDAgcmVhZHlcbiIpOwogCiAJLyogU2V0IGJpdHMgb2YgQ09ORklHIHJlZ2lzdGVy IHdpdGggZHluYW1pYyBjb250ZXh0IHN3aXRjaGluZyAqLwotCWlmIChyZWFkbChzZG1hLT5yZWdz ICsgU0RNQV9IX0NPTkZJRykgPT0gMCkKLQkJd3JpdGVsX3JlbGF4ZWQoU0RNQV9IX0NPTkZJR19D U00sIHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKTsKKwlpZiAocmVhZGwoc2RtYS0+cmVncyAr IFNETUFfSF9DT05GSUcpID09IDApIHsKKwkJaWYgKHNkbWEtPmNsa19yYXRpbykKKwkJCXJlZyA9 IFNETUFfSF9DT05GSUdfQ1NNIHwgU0RNQV9IX0NPTkZJR19BQ1I7CisJCWVsc2UKKwkJCXJlZyA9 IFNETUFfSF9DT05GSUdfQ1NNOworCisJCXdyaXRlbF9yZWxheGVkKHJlZywgc2RtYS0+cmVncyAr IFNETUFfSF9DT05GSUcpOworCX0KIAogCXJldHVybiByZXQ7CiB9CkBAIC0xODgwLDggKzE4ODgs MTAgQEAgc3RhdGljIGludCBzZG1hX2luaXQoc3RydWN0IHNkbWFfZW5naW5lICpzZG1hKQogCXdy aXRlbF9yZWxheGVkKDB4NDA1MCwgc2RtYS0+cmVncyArIFNETUFfQ0hOMEFERFIpOwogCiAJLyog U2V0IGJpdHMgb2YgQ09ORklHIHJlZ2lzdGVyIGJ1dCB3aXRoIHN0YXRpYyBjb250ZXh0IHN3aXRj aGluZyAqLwotCS8qIEZJWE1FOiBDaGVjayB3aGV0aGVyIHRvIHNldCBBQ1IgYml0IGRlcGVuZGlu ZyBvbiBjbG9jayByYXRpb3MgKi8KLQl3cml0ZWxfcmVsYXhlZCgwLCBzZG1hLT5yZWdzICsgU0RN QV9IX0NPTkZJRyk7CisJaWYgKHNkbWEtPmNsa19yYXRpbykKKwkJd3JpdGVsX3JlbGF4ZWQoU0RN QV9IX0NPTkZJR19BQ1IsIHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKTsKKwllbHNlCisJCXdy aXRlbF9yZWxheGVkKDAsIHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKTsKIAogCXdyaXRlbF9y ZWxheGVkKGNjYl9waHlzLCBzZG1hLT5yZWdzICsgU0RNQV9IX0MwUFRSKTsKIApAQCAtMTk3NSw2 ICsxOTg1LDggQEAgc3RhdGljIGludCBzZG1hX3Byb2JlKHN0cnVjdCBwbGF0Zm9ybV9kZXZpY2Ug KnBkZXYpCiAJaWYgKCFzZG1hKQogCQlyZXR1cm4gLUVOT01FTTsKIAorCXNkbWEtPmNsa19yYXRp byA9IG9mX3Byb3BlcnR5X3JlYWRfYm9vbChucCwgImZzbCxyYXRpby0xLTEiKTsKKwogCXNwaW5f bG9ja19pbml0KCZzZG1hLT5jaGFubmVsXzBfbG9jayk7CiAKIAlzZG1hLT5kZXYgPSAmcGRldi0+ ZGV2Owo=