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: [v6,1/3] dmaengine: imx-sdma: add clock ratio 1:1 check From: Angus Ainslie Message-Id: <20190128160323.28170-2-angus@akkea.ca> Date: Mon, 28 Jan 2019 09:03:21 -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 QGFra2VhLmNhPgpSZXZpZXdlZC1ieTogTHVjYXMgU3RhY2ggPGwuc3RhY2hAcGVuZ3V0cm9uaXgu ZGU+Ci0tLQogZHJpdmVycy9kbWEvaW14LXNkbWEuYyB8IDE4ICsrKysrKysrKysrKysrLS0tLQog MSBmaWxlIGNoYW5nZWQsIDE0IGluc2VydGlvbnMoKyksIDQgZGVsZXRpb25zKC0pCgpkaWZmIC0t Z2l0IGEvZHJpdmVycy9kbWEvaW14LXNkbWEuYyBiL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKaW5k ZXggMGIzYTY3ZmY4ZTgyLi43NTdmYWQyZmJmYWUgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZG1hL2lt eC1zZG1hLmMKKysrIGIvZHJpdmVycy9kbWEvaW14LXNkbWEuYwpAQCAtNDQwLDYgKzQ0MCw4IEBA IHN0cnVjdCBzZG1hX2VuZ2luZSB7CiAJdW5zaWduZWQgaW50CQkJaXJxOwogCWRtYV9hZGRyX3QJ CQliZDBfcGh5czsKIAlzdHJ1Y3Qgc2RtYV9idWZmZXJfZGVzY3JpcHRvcgkqYmQwOworCS8qIGNs b2NrIHJhdGlvIGZvciBBSEI6U0RNQSBjb3JlLiAxOjEgaXMgMSwgMjoxIGlzIDAqLworCWJvb2wJ CQkJY2xrX3JhdGlvOwogfTsKIAogc3RhdGljIGludCBzZG1hX2NvbmZpZ193cml0ZShzdHJ1Y3Qg ZG1hX2NoYW4gKmNoYW4sCkBAIC02NjIsOCArNjY0LDExIEBAIHN0YXRpYyBpbnQgc2RtYV9ydW5f Y2hhbm5lbDAoc3RydWN0IHNkbWFfZW5naW5lICpzZG1hKQogCQlkZXZfZXJyKHNkbWEtPmRldiwg IlRpbWVvdXQgd2FpdGluZyBmb3IgQ0gwIHJlYWR5XG4iKTsKIAogCS8qIFNldCBiaXRzIG9mIENP TkZJRyByZWdpc3RlciB3aXRoIGR5bmFtaWMgY29udGV4dCBzd2l0Y2hpbmcgKi8KLQlpZiAocmVh ZGwoc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpID09IDApCi0JCXdyaXRlbF9yZWxheGVkKFNE TUFfSF9DT05GSUdfQ1NNLCBzZG1hLT5yZWdzICsgU0RNQV9IX0NPTkZJRyk7CisJcmVnID0gcmVh ZGwoc2RtYS0+cmVncyArIFNETUFfSF9DT05GSUcpOworCWlmICgocmVnICYgU0RNQV9IX0NPTkZJ R19DU00pID09IDApIHsKKwkJcmVnIHw9IFNETUFfSF9DT05GSUdfQ1NNOworCQl3cml0ZWxfcmVs YXhlZChyZWcsIHNkbWEtPnJlZ3MgKyBTRE1BX0hfQ09ORklHKTsKKwl9CiAKIAlyZXR1cm4gcmV0 OwogfQpAQCAtMTg0MCw2ICsxODQ1LDkgQEAgc3RhdGljIGludCBzZG1hX2luaXQoc3RydWN0IHNk bWFfZW5naW5lICpzZG1hKQogCWlmIChyZXQpCiAJCWdvdG8gZGlzYWJsZV9jbGtfaXBnOwogCisJ aWYgKGNsa19nZXRfcmF0ZShzZG1hLT5jbGtfYWhiKSA9PSBjbGtfZ2V0X3JhdGUoc2RtYS0+Y2xr X2lwZykpCisJCXNkbWEtPmNsa19yYXRpbyA9IDE7CisKIAkvKiBCZSBzdXJlIFNETUEgaGFzIG5v dCBzdGFydGVkIHlldCAqLwogCXdyaXRlbF9yZWxheGVkKDAsIHNkbWEtPnJlZ3MgKyBTRE1BX0hf QzBQVFIpOwogCkBAIC0xODgwLDggKzE4ODgsMTAgQEAgc3RhdGljIGludCBzZG1hX2luaXQoc3Ry dWN0IHNkbWFfZW5naW5lICpzZG1hKQogCXdyaXRlbF9yZWxheGVkKDB4NDA1MCwgc2RtYS0+cmVn cyArIFNETUFfQ0hOMEFERFIpOwogCiAJLyogU2V0IGJpdHMgb2YgQ09ORklHIHJlZ2lzdGVyIGJ1 dCB3aXRoIHN0YXRpYyBjb250ZXh0IHN3aXRjaGluZyAqLwotCS8qIEZJWE1FOiBDaGVjayB3aGV0 aGVyIHRvIHNldCBBQ1IgYml0IGRlcGVuZGluZyBvbiBjbG9jayByYXRpb3MgKi8KLQl3cml0ZWxf cmVsYXhlZCgwLCBzZG1hLT5yZWdzICsgU0RNQV9IX0NPTkZJRyk7CisJaWYgKHNkbWEtPmNsa19y YXRpbykKKwkJd3JpdGVsX3JlbGF4ZWQoU0RNQV9IX0NPTkZJR19BQ1IsIHNkbWEtPnJlZ3MgKyBT RE1BX0hfQ09ORklHKTsKKwllbHNlCisJCXdyaXRlbF9yZWxheGVkKDAsIHNkbWEtPnJlZ3MgKyBT RE1BX0hfQ09ORklHKTsKIAogCXdyaXRlbF9yZWxheGVkKGNjYl9waHlzLCBzZG1hLT5yZWdzICsg U0RNQV9IX0MwUFRSKTsKIAo=