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: [2/5] USB: serial: f81232: add high baud rate support From: "Ji-Ze Hong \(Peter Hong\)" Message-Id: <1516607927-8887-2-git-send-email-hpeter+linux_kernel@gmail.com> Date: Mon, 22 Jan 2018 15:58:44 +0800 To: johan@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, peter_hong@fintek.com.tw, "Ji-Ze Hong \(Peter Hong\)" List-ID: VGhlIEY4MTIzMiBoYWQgNCBjbG9ja3NvdXJjZSAxLjg0Ni8xOC40Ni8xNC43Ny8yNE1IeiBhbmQg YmF1ZCByYXRlcwpjYW4gYmUgdXAgdG8gMS41TWJpdHMgd2l0aCAyNE1Iei4KCkY4MTIzMiBDbG9j ayByZWdpc3RlcnMgKDEwNmgpCgpCaXQxLTA6ICAgICBDbG9jayBzb3VyY2Ugc2VsZWN0b3IKICAg ICAgICAgICAgICAgICAgICAwMDogMS44NDZNSHouCiAgICAgICAgICAgICAgICAgICAgMDE6IDE4 LjQ2TUh6LgogICAgICAgICAgICAgICAgICAgIDEwOiAyNE1Iei4KICAgICAgICAgICAgICAgICAg ICAxMTogMTQuNzdNSHouCgpTaWduZWQtb2ZmLWJ5OiBKaS1aZSBIb25nIChQZXRlciBIb25nKSA8 aHBldGVyK2xpbnV4X2tlcm5lbEBnbWFpbC5jb20+Ci0tLQogZHJpdmVycy91c2Ivc2VyaWFsL2Y4 MTIzMi5jIHwgMTA1ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKy0tLS0t CiAxIGZpbGUgY2hhbmdlZCwgOTQgaW5zZXJ0aW9ucygrKSwgMTEgZGVsZXRpb25zKC0pCgpkaWZm IC0tZ2l0IGEvZHJpdmVycy91c2Ivc2VyaWFsL2Y4MTIzMi5jIGIvZHJpdmVycy91c2Ivc2VyaWFs L2Y4MTIzMi5jCmluZGV4IDQ2ODM2MDQxYzUwZS4uYmRkN2YzMzdjZDVmIDEwMDY0NAotLS0gYS9k cml2ZXJzL3VzYi9zZXJpYWwvZjgxMjMyLmMKKysrIGIvZHJpdmVycy91c2Ivc2VyaWFsL2Y4MTIz Mi5jCkBAIC0yOCw3ICsyOCw4IEBAIHN0YXRpYyBjb25zdCBzdHJ1Y3QgdXNiX2RldmljZV9pZCBp ZF90YWJsZVtdID0gewogTU9EVUxFX0RFVklDRV9UQUJMRSh1c2IsIGlkX3RhYmxlKTsKIAogLyog TWF4aW11bSBiYXVkcmF0ZSBmb3IgRjgxMjMyICovCi0jZGVmaW5lIEY4MTIzMl9NQVhfQkFVRFJB VEUJCTExNTIwMAorI2RlZmluZSBGODEyMzJfTUFYX0JBVURSQVRFCQkxNTAwMDAwCisjZGVmaW5l IEY4MTIzMl9ERUZfQkFVRFJBVEUJCTk2MDAKIAogLyogVVNCIENvbnRyb2wgRVAgcGFyYW1ldGVy ICovCiAjZGVmaW5lIEY4MTIzMl9SRUdJU1RFUl9SRVFVRVNUCQkweGEwCkBAIC00NCwxOCArNDUs NDIgQEAgTU9EVUxFX0RFVklDRV9UQUJMRSh1c2IsIGlkX3RhYmxlKTsKICNkZWZpbmUgTElORV9T VEFUVVNfUkVHSVNURVIJCSgweDA1ICsgU0VSSUFMX0JBU0VfQUREUkVTUykKICNkZWZpbmUgTU9E RU1fU1RBVFVTX1JFR0lTVEVSCQkoMHgwNiArIFNFUklBTF9CQVNFX0FERFJFU1MpCiAKKy8qCisg KiBGODEyMzIgQ2xvY2sgcmVnaXN0ZXJzICgxMDZoKQorICoKKyAqIEJpdDEtMDoJQ2xvY2sgc291 cmNlIHNlbGVjdG9yCisgKgkJCTAwOiAxLjg0Nk1Iei4KKyAqCQkJMDE6IDE4LjQ2TUh6LgorICoJ CQkxMDogMjRNSHouCisgKgkJCTExOiAxNC43N01Iei4KKyAqLworI2RlZmluZSBGODEyMzJfQ0xL X1JFR0lTVEVSCQkweDEwNgorI2RlZmluZSBGODEyMzJfQ0xLXzFfODQ2X01IWgkJMAorI2RlZmlu ZSBGODEyMzJfQ0xLXzE4XzQ2X01IWgkJQklUKDApCisjZGVmaW5lIEY4MTIzMl9DTEtfMjRfTUha CQlCSVQoMSkKKyNkZWZpbmUgRjgxMjMyX0NMS18xNF83N19NSFoJCShCSVQoMSkgfCBCSVQoMCkp CisjZGVmaW5lIEY4MTIzMl9DTEtfTUFTSwkJCUdFTk1BU0soMSwgMCkKKwogc3RydWN0IGY4MTIz Ml9wcml2YXRlIHsKIAlzdHJ1Y3QgbXV0ZXggbG9jazsKIAl1OCBtb2RlbV9jb250cm9sOwogCXU4 IG1vZGVtX3N0YXR1czsKKwlzcGVlZF90IGJhdWRfYmFzZTsKIAlzdHJ1Y3Qgd29ya19zdHJ1Y3Qg bHNyX3dvcms7CiAJc3RydWN0IHdvcmtfc3RydWN0IGludGVycnVwdF93b3JrOwogCXN0cnVjdCB1 c2Jfc2VyaWFsX3BvcnQgKnBvcnQ7CiB9OwogCi1zdGF0aWMgaW50IGNhbGNfYmF1ZF9kaXZpc29y KHNwZWVkX3QgYmF1ZHJhdGUpCitzdGF0aWMgdTMyIGNvbnN0IGJhdWRyYXRlX3RhYmxlW10gPSB7 IDExNTIwMCwgOTIxNjAwLCAxMTUyMDAwLCAxNTAwMDAwIH07CitzdGF0aWMgdTggY29uc3QgY2xv Y2tfdGFibGVbXSA9IHsgRjgxMjMyX0NMS18xXzg0Nl9NSFosIEY4MTIzMl9DTEtfMTRfNzdfTUha LAorCQkJCUY4MTIzMl9DTEtfMThfNDZfTUhaLCBGODEyMzJfQ0xLXzI0X01IWiB9OworCitzdGF0 aWMgaW50IGNhbGNfYmF1ZF9kaXZpc29yKHNwZWVkX3QgYmF1ZHJhdGUsIHNwZWVkX3QgY2xvY2ty YXRlKQogewotCXJldHVybiBESVZfUk9VTkRfQ0xPU0VTVChGODEyMzJfTUFYX0JBVURSQVRFLCBi YXVkcmF0ZSk7CisJaWYgKCFiYXVkcmF0ZSkKKwkJcmV0dXJuIDA7CisKKwlyZXR1cm4gRElWX1JP VU5EX0NMT1NFU1QoY2xvY2tyYXRlLCBiYXVkcmF0ZSk7CiB9CiAKIHN0YXRpYyBpbnQgZjgxMjMy X2dldF9yZWdpc3RlcihzdHJ1Y3QgdXNiX3NlcmlhbF9wb3J0ICpwb3J0LCB1MTYgcmVnLCB1OCAq dmFsKQpAQCAtMTI5LDYgKzE1NCwyMSBAQCBzdGF0aWMgaW50IGY4MTIzMl9zZXRfcmVnaXN0ZXIo c3RydWN0IHVzYl9zZXJpYWxfcG9ydCAqcG9ydCwgdTE2IHJlZywgdTggdmFsKQogCXJldHVybiBz dGF0dXM7CiB9CiAKK3N0YXRpYyBpbnQgZjgxMjMyX3NldF9tYXNrX3JlZ2lzdGVyKHN0cnVjdCB1 c2Jfc2VyaWFsX3BvcnQgKnBvcnQsIHUxNiByZWcsCisJCQkJCXU4IG1hc2ssIHU4IHZhbCkKK3sK KwlpbnQgc3RhdHVzOworCXU4IHRtcDsKKworCXN0YXR1cyA9IGY4MTIzMl9nZXRfcmVnaXN0ZXIo cG9ydCwgcmVnLCAmdG1wKTsKKwlpZiAoc3RhdHVzKQorCQlyZXR1cm4gc3RhdHVzOworCisJdG1w ID0gKHRtcCAmIH5tYXNrKSB8ICh2YWwgJiBtYXNrKTsKKworCXJldHVybiBmODEyMzJfc2V0X3Jl Z2lzdGVyKHBvcnQsIHJlZywgdG1wKTsKK30KKwogc3RhdGljIHZvaWQgZjgxMjMyX3JlYWRfbXNy KHN0cnVjdCB1c2Jfc2VyaWFsX3BvcnQgKnBvcnQpCiB7CiAJaW50IHN0YXR1czsKQEAgLTM0Niwx MyArMzg2LDUzIEBAIHN0YXRpYyB2b2lkIGY4MTIzMl9icmVha19jdGwoc3RydWN0IHR0eV9zdHJ1 Y3QgKnR0eSwgaW50IGJyZWFrX3N0YXRlKQogCSAqLwogfQogCi1zdGF0aWMgdm9pZCBmODEyMzJf c2V0X2JhdWRyYXRlKHN0cnVjdCB1c2Jfc2VyaWFsX3BvcnQgKnBvcnQsIHNwZWVkX3QgYmF1ZHJh dGUpCitzdGF0aWMgaW50IGY4MTIzMl9maW5kX2NsayhzcGVlZF90IGJhdWRyYXRlKQoreworCWlu dCBpZHg7CisKKwlmb3IgKGlkeCA9IDA7IGlkeCA8IEFSUkFZX1NJWkUoYmF1ZHJhdGVfdGFibGUp OyArK2lkeCkgeworCQlpZiAoYmF1ZHJhdGUgPD0gYmF1ZHJhdGVfdGFibGVbaWR4XSAmJgorCQkJ CWJhdWRyYXRlX3RhYmxlW2lkeF0gJSBiYXVkcmF0ZSA9PSAwKQorCQkJcmV0dXJuIGlkeDsKKwl9 CisKKwlyZXR1cm4gLUVJTlZBTDsKK30KKworc3RhdGljIHZvaWQgZjgxMjMyX3NldF9iYXVkcmF0 ZShzdHJ1Y3QgdHR5X3N0cnVjdCAqdHR5LAorCQkJCXN0cnVjdCB1c2Jfc2VyaWFsX3BvcnQgKnBv cnQsIHNwZWVkX3QgYmF1ZHJhdGUsCisJCQkJc3BlZWRfdCBvbGRfYmF1ZHJhdGUpCiB7CisJc3Ry dWN0IGY4MTIzMl9wcml2YXRlICpwcml2ID0gdXNiX2dldF9zZXJpYWxfcG9ydF9kYXRhKHBvcnQp OwogCXU4IGxjcjsKIAlpbnQgZGl2aXNvcjsKIAlpbnQgc3RhdHVzID0gMDsKKwlpbnQgaTsKKwlp bnQgaWR4OworCXNwZWVkX3QgYmF1ZF9saXN0W10gPSB7YmF1ZHJhdGUsIG9sZF9iYXVkcmF0ZSwg RjgxMjMyX0RFRl9CQVVEUkFURX07CisKKwlmb3IgKGkgPSAwOyBpIDwgQVJSQVlfU0laRShiYXVk X2xpc3QpOyArK2kpIHsKKwkJaWR4ID0gZjgxMjMyX2ZpbmRfY2xrKGJhdWRfbGlzdFtpXSk7CisJ CWlmIChpZHggPj0gMCkgeworCQkJYmF1ZHJhdGUgPSBiYXVkX2xpc3RbaV07CisJCQl0dHlfZW5j b2RlX2JhdWRfcmF0ZSh0dHksIGJhdWRyYXRlLCBiYXVkcmF0ZSk7CisJCQlicmVhazsKKwkJfQor CX0KIAotCWRpdmlzb3IgPSBjYWxjX2JhdWRfZGl2aXNvcihiYXVkcmF0ZSk7CisJaWYgKGlkeCA8 IDApCisJCXJldHVybjsKKworCXByaXYtPmJhdWRfYmFzZSA9IGJhdWRyYXRlX3RhYmxlW2lkeF07 CisJZGl2aXNvciA9IGNhbGNfYmF1ZF9kaXZpc29yKGJhdWRyYXRlLCBwcml2LT5iYXVkX2Jhc2Up OworCisJc3RhdHVzID0gZjgxMjMyX3NldF9tYXNrX3JlZ2lzdGVyKHBvcnQsIEY4MTIzMl9DTEtf UkVHSVNURVIsCisJCQlGODEyMzJfQ0xLX01BU0ssIGNsb2NrX3RhYmxlW2lkeF0pOworCWlmIChz dGF0dXMpIHsKKwkJZGV2X2VycigmcG9ydC0+ZGV2LCAiJXMgZmFpbGVkIHRvIHNldCBDTEtfUkVH OiAlZFxuIiwKKwkJCV9fZnVuY19fLCBzdGF0dXMpOworCQlyZXR1cm47CisJfQogCiAJc3RhdHVz ID0gZjgxMjMyX2dldF9yZWdpc3Rlcihwb3J0LCBMSU5FX0NPTlRST0xfUkVHSVNURVIsCiAJCQkg Jmxjcik7IC8qIGdldCBMQ1IgKi8KQEAgLTQ0Miw2ICs1MjIsNyBAQCBzdGF0aWMgdm9pZCBmODEy MzJfc2V0X3Rlcm1pb3Moc3RydWN0IHR0eV9zdHJ1Y3QgKnR0eSwKIAl1OCBuZXdfbGNyID0gMDsK IAlpbnQgc3RhdHVzID0gMDsKIAlzcGVlZF90IGJhdWRyYXRlOworCXNwZWVkX3Qgb2xkX2JhdWQ7 CiAKIAkvKiBEb24ndCBjaGFuZ2UgYW55dGhpbmcgaWYgbm90aGluZyBoYXMgY2hhbmdlZCAqLwog CWlmIChvbGRfdGVybWlvcyAmJiAhdHR5X3Rlcm1pb3NfaHdfY2hhbmdlKCZ0dHktPnRlcm1pb3Ms IG9sZF90ZXJtaW9zKSkKQEAgLTQ1NCwxMSArNTM1LDEyIEBAIHN0YXRpYyB2b2lkIGY4MTIzMl9z ZXRfdGVybWlvcyhzdHJ1Y3QgdHR5X3N0cnVjdCAqdHR5LAogCiAJYmF1ZHJhdGUgPSB0dHlfZ2V0 X2JhdWRfcmF0ZSh0dHkpOwogCWlmIChiYXVkcmF0ZSA+IDApIHsKLQkJaWYgKGJhdWRyYXRlID4g RjgxMjMyX01BWF9CQVVEUkFURSkgewotCQkJYmF1ZHJhdGUgPSBGODEyMzJfTUFYX0JBVURSQVRF OwotCQkJdHR5X2VuY29kZV9iYXVkX3JhdGUodHR5LCBiYXVkcmF0ZSwgYmF1ZHJhdGUpOwotCQl9 Ci0JCWY4MTIzMl9zZXRfYmF1ZHJhdGUocG9ydCwgYmF1ZHJhdGUpOworCQlpZiAob2xkX3Rlcm1p b3MpCisJCQlvbGRfYmF1ZCA9IHR0eV90ZXJtaW9zX2JhdWRfcmF0ZShvbGRfdGVybWlvcyk7CisJ CWVsc2UKKwkJCW9sZF9iYXVkID0gRjgxMjMyX0RFRl9CQVVEUkFURTsKKworCQlmODEyMzJfc2V0 X2JhdWRyYXRlKHR0eSwgcG9ydCwgYmF1ZHJhdGUsIG9sZF9iYXVkKTsKIAl9CiAKIAlpZiAoQ19Q QVJFTkIodHR5KSkgewpAQCAtNTkwLDYgKzY3Miw3IEBAIHN0YXRpYyBpbnQgZjgxMjMyX2NhcnJp ZXJfcmFpc2VkKHN0cnVjdCB1c2Jfc2VyaWFsX3BvcnQgKnBvcnQpCiBzdGF0aWMgaW50IGY4MTIz Ml9nZXRfc2VyaWFsX2luZm8oc3RydWN0IHVzYl9zZXJpYWxfcG9ydCAqcG9ydCwKIAkJdW5zaWdu ZWQgbG9uZyBhcmcpCiB7CisJc3RydWN0IGY4MTIzMl9wcml2YXRlICpwcml2ID0gdXNiX2dldF9z ZXJpYWxfcG9ydF9kYXRhKHBvcnQpOwogCXN0cnVjdCBzZXJpYWxfc3RydWN0IHNlcjsKIAogCW1l bXNldCgmc2VyLCAwLCBzaXplb2Yoc2VyKSk7CkBAIC01OTcsNyArNjgwLDcgQEAgc3RhdGljIGlu dCBmODEyMzJfZ2V0X3NlcmlhbF9pbmZvKHN0cnVjdCB1c2Jfc2VyaWFsX3BvcnQgKnBvcnQsCiAJ c2VyLnR5cGUgPSBQT1JUXzE2NTUwQTsKIAlzZXIubGluZSA9IHBvcnQtPm1pbm9yOwogCXNlci5w b3J0ID0gcG9ydC0+cG9ydF9udW1iZXI7Ci0Jc2VyLmJhdWRfYmFzZSA9IEY4MTIzMl9NQVhfQkFV RFJBVEU7CisJc2VyLmJhdWRfYmFzZSA9IHByaXYtPmJhdWRfYmFzZTsKIAogCWlmIChjb3B5X3Rv X3VzZXIoKHZvaWQgX191c2VyICopYXJnLCAmc2VyLCBzaXplb2Yoc2VyKSkpCiAJCXJldHVybiAt RUZBVUxUOwo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1347626-1516607980-2-2357623286611252511 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, FREEMAIL_FORGED_FROMDOMAIN 0.25, FREEMAIL_FROM 0.001, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES roda, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-usb-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1516607979; b=dUtwqTi9odlLMBdokCJkMoxqj+uDJltF5Ibd1GeEtWPfI9o KhQlZqd0ItcJ0bp03Yl7mVViLNKTmNn2tan9He0HvIj37HkozUZG7SMS5CzjilP1 KIRPy7NfKs/03SSctylD13/PZb1aAHL4G0SHR5N1JivGyW7YD51YuZIEaZth4fLb YqlkcOEnQ0VK6AXF97V+aR9xM0dtN9o2LwmFiD+oV2vnnAoSezwKZ5b6hPHBNQ2+ I/AOMqupCQJrLu8OqigCgwegI4UYoAGi/MoOtNY9HtMYXbdr7tE0IXMXNwS+ryGn sqDtygNEOYlkBfhu4I/xL5FQNqWyLnAXYIT6WCQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=arctest; t=1516607979; bh=dKeNir9o0j6e6rk4+PLh61/IFgutDPEmkb9XzyXqLbk=; b=d1Pe6LDsPnJs FYF7LV0mhsfRaopLHeK53boUv4++DUWstqw6Swx1RFOESIwxmsbHNezgy+VmXdkp Rm8ohTFaOGnPeU0B9jaRW0hFUis1dSFb1w545iK0NJGvGbRLaWtWs2HK3CG55X4U I3pzVGjbAyx7WgAjGbeRDdA6ohxNzQeyRfYja6V8c4iOWOjiin4NMYYe3JinCEgU kD5w0xCFvZD8AnGK1fY9A7lfdzPKa4KqbXahSrxSOIPu7CV+94JgQp52XQBS740i GUi5HeU7OAjtHeiCjBY77ZpPqM4nCLzxc9ZM11jzuktjA73glo4qfOLL/VfM+U+G dlxUCMfjuw== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=fail (body has been altered; 2048-bit rsa key sha256) header.d=gmail.com header.i=@gmail.com header.b=GNXoxgOa x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=20161025; dmarc=fail (p=none,has-list-id=yes,d=none) header.from=gmail.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-google-dkim=fail (body has been altered; 2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=GmOyThdE; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=gmail.com header.result=pass header_is_org_domain=yes Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=fail (body has been altered; 2048-bit rsa key sha256) header.d=gmail.com header.i=@gmail.com header.b=GNXoxgOa x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=20161025; dmarc=fail (p=none,has-list-id=yes,d=none) header.from=gmail.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-google-dkim=fail (body has been altered; 2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=GmOyThdE; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=gmail.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751133AbeAVH6z (ORCPT ); Mon, 22 Jan 2018 02:58:55 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:40283 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750981AbeAVH6x (ORCPT ); Mon, 22 Jan 2018 02:58:53 -0500 X-Google-Smtp-Source: AH8x226iuItoz70bHCbe4Q2R/a70LVhwB0qOAiokTzfVqjeLUWT72MgZFvn8E7KufIT+41g+uw418w== From: "Ji-Ze Hong (Peter Hong)" X-Google-Original-From: "Ji-Ze Hong (Peter Hong)" To: johan@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, peter_hong@fintek.com.tw, "Ji-Ze Hong (Peter Hong)" Subject: [PATCH 2/5] USB: serial: f81232: add high baud rate support Date: Mon, 22 Jan 2018 15:58:44 +0800 Message-Id: <1516607927-8887-2-git-send-email-hpeter+linux_kernel@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516607927-8887-1-git-send-email-hpeter+linux_kernel@gmail.com> References: <1516607927-8887-1-git-send-email-hpeter+linux_kernel@gmail.com> Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: The F81232 had 4 clocksource 1.846/18.46/14.77/24MHz and baud rates can be up to 1.5Mbits with 24MHz. F81232 Clock registers (106h) Bit1-0: Clock source selector 00: 1.846MHz. 01: 18.46MHz. 10: 24MHz. 11: 14.77MHz. Signed-off-by: Ji-Ze Hong (Peter Hong) --- drivers/usb/serial/f81232.c | 105 +++++++++++++++++++++++++++++++++++++++----- 1 file changed, 94 insertions(+), 11 deletions(-) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 46836041c50e..bdd7f337cd5f 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -28,7 +28,8 @@ static const struct usb_device_id id_table[] = { MODULE_DEVICE_TABLE(usb, id_table); /* Maximum baudrate for F81232 */ -#define F81232_MAX_BAUDRATE 115200 +#define F81232_MAX_BAUDRATE 1500000 +#define F81232_DEF_BAUDRATE 9600 /* USB Control EP parameter */ #define F81232_REGISTER_REQUEST 0xa0 @@ -44,18 +45,42 @@ MODULE_DEVICE_TABLE(usb, id_table); #define LINE_STATUS_REGISTER (0x05 + SERIAL_BASE_ADDRESS) #define MODEM_STATUS_REGISTER (0x06 + SERIAL_BASE_ADDRESS) +/* + * F81232 Clock registers (106h) + * + * Bit1-0: Clock source selector + * 00: 1.846MHz. + * 01: 18.46MHz. + * 10: 24MHz. + * 11: 14.77MHz. + */ +#define F81232_CLK_REGISTER 0x106 +#define F81232_CLK_1_846_MHZ 0 +#define F81232_CLK_18_46_MHZ BIT(0) +#define F81232_CLK_24_MHZ BIT(1) +#define F81232_CLK_14_77_MHZ (BIT(1) | BIT(0)) +#define F81232_CLK_MASK GENMASK(1, 0) + struct f81232_private { struct mutex lock; u8 modem_control; u8 modem_status; + speed_t baud_base; struct work_struct lsr_work; struct work_struct interrupt_work; struct usb_serial_port *port; }; -static int calc_baud_divisor(speed_t baudrate) +static u32 const baudrate_table[] = { 115200, 921600, 1152000, 1500000 }; +static u8 const clock_table[] = { F81232_CLK_1_846_MHZ, F81232_CLK_14_77_MHZ, + F81232_CLK_18_46_MHZ, F81232_CLK_24_MHZ }; + +static int calc_baud_divisor(speed_t baudrate, speed_t clockrate) { - return DIV_ROUND_CLOSEST(F81232_MAX_BAUDRATE, baudrate); + if (!baudrate) + return 0; + + return DIV_ROUND_CLOSEST(clockrate, baudrate); } static int f81232_get_register(struct usb_serial_port *port, u16 reg, u8 *val) @@ -129,6 +154,21 @@ static int f81232_set_register(struct usb_serial_port *port, u16 reg, u8 val) return status; } +static int f81232_set_mask_register(struct usb_serial_port *port, u16 reg, + u8 mask, u8 val) +{ + int status; + u8 tmp; + + status = f81232_get_register(port, reg, &tmp); + if (status) + return status; + + tmp = (tmp & ~mask) | (val & mask); + + return f81232_set_register(port, reg, tmp); +} + static void f81232_read_msr(struct usb_serial_port *port) { int status; @@ -346,13 +386,53 @@ static void f81232_break_ctl(struct tty_struct *tty, int break_state) */ } -static void f81232_set_baudrate(struct usb_serial_port *port, speed_t baudrate) +static int f81232_find_clk(speed_t baudrate) +{ + int idx; + + for (idx = 0; idx < ARRAY_SIZE(baudrate_table); ++idx) { + if (baudrate <= baudrate_table[idx] && + baudrate_table[idx] % baudrate == 0) + return idx; + } + + return -EINVAL; +} + +static void f81232_set_baudrate(struct tty_struct *tty, + struct usb_serial_port *port, speed_t baudrate, + speed_t old_baudrate) { + struct f81232_private *priv = usb_get_serial_port_data(port); u8 lcr; int divisor; int status = 0; + int i; + int idx; + speed_t baud_list[] = {baudrate, old_baudrate, F81232_DEF_BAUDRATE}; + + for (i = 0; i < ARRAY_SIZE(baud_list); ++i) { + idx = f81232_find_clk(baud_list[i]); + if (idx >= 0) { + baudrate = baud_list[i]; + tty_encode_baud_rate(tty, baudrate, baudrate); + break; + } + } - divisor = calc_baud_divisor(baudrate); + if (idx < 0) + return; + + priv->baud_base = baudrate_table[idx]; + divisor = calc_baud_divisor(baudrate, priv->baud_base); + + status = f81232_set_mask_register(port, F81232_CLK_REGISTER, + F81232_CLK_MASK, clock_table[idx]); + if (status) { + dev_err(&port->dev, "%s failed to set CLK_REG: %d\n", + __func__, status); + return; + } status = f81232_get_register(port, LINE_CONTROL_REGISTER, &lcr); /* get LCR */ @@ -442,6 +522,7 @@ static void f81232_set_termios(struct tty_struct *tty, u8 new_lcr = 0; int status = 0; speed_t baudrate; + speed_t old_baud; /* Don't change anything if nothing has changed */ if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) @@ -454,11 +535,12 @@ static void f81232_set_termios(struct tty_struct *tty, baudrate = tty_get_baud_rate(tty); if (baudrate > 0) { - if (baudrate > F81232_MAX_BAUDRATE) { - baudrate = F81232_MAX_BAUDRATE; - tty_encode_baud_rate(tty, baudrate, baudrate); - } - f81232_set_baudrate(port, baudrate); + if (old_termios) + old_baud = tty_termios_baud_rate(old_termios); + else + old_baud = F81232_DEF_BAUDRATE; + + f81232_set_baudrate(tty, port, baudrate, old_baud); } if (C_PARENB(tty)) { @@ -590,6 +672,7 @@ static int f81232_carrier_raised(struct usb_serial_port *port) static int f81232_get_serial_info(struct usb_serial_port *port, unsigned long arg) { + struct f81232_private *priv = usb_get_serial_port_data(port); struct serial_struct ser; memset(&ser, 0, sizeof(ser)); @@ -597,7 +680,7 @@ static int f81232_get_serial_info(struct usb_serial_port *port, ser.type = PORT_16550A; ser.line = port->minor; ser.port = port->port_number; - ser.baud_base = F81232_MAX_BAUDRATE; + ser.baud_base = priv->baud_base; if (copy_to_user((void __user *)arg, &ser, sizeof(ser))) return -EFAULT; -- 2.7.4