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16 Jun 2020 07:19:02 -0700 From: Imre Deak To: intel-gfx@lists.freedesktop.org Date: Tue, 16 Jun 2020 17:18:51 +0300 Message-Id: <20200616141855.746-2-imre.deak@intel.com> X-Mailer: git-send-email 2.23.1 In-Reply-To: <20200616141855.746-1-imre.deak@intel.com> References: <20200616141855.746-1-imre.deak@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/6] drm/i915/dp_mst: Disable link training fallback on MST links X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" V2UgY2FsY3VsYXRlIHRoZSBNU1QgYXZhaWxhYmxlIGJhbmR3aWR0aCB1c2luZyB0aGUgbGluaydz IG1heGltdW0gcmF0ZQphbmQgbGFuZSBjb3VudC4gVGhpcyBiYW5kd2lkdGggd29uJ3QgYmUgcmVj YWxjdWxhdGVkIGluIHJlc3BvbnNlIHRvIGEKbGluayB0cmFpbmluZyBlcnJvciBhbmQgZmFsbGJh Y2sgc2V0dGluZywgc28gbW9kZXNldHMgZm9sbG93aW5nIGEgbGluawp0cmFpbmluZyBlcnJvciB3 aWxsIGNhbGN1bGF0ZSBpbmNvcnJlY3QgdGltaW5nIHBhcmFtZXRlcnMgKGxpa2UgdGhlCnRyYW5z Y29kZXIncyBkYXRhIE0vTiBwYXJhbXMgb3IgdGhlIG51bWJlciBvZiBNU1QgVFVzKS4KClByZXZl bnQgdGhlIGFib3ZlIHByb2JsZW0gYnkgZGlzYWJsaW5nIHRoZSBsaW5rIHRyYWluaW5nIGZhbGxi YWNrIG9uIE1TVApsaW5rcyBmb3Igbm93LCB1bnRpbCB0aGUgTVNUIGNvbXB1dGUgY29uZmlnIGNh biBkZWFsIHdpdGggY2hhbmdpbmcgbGluawpwYXJhbWV0ZXJzLgoKVGhlIG1pc2NvbmZpZ3VyZWQg dGltaW5nIGxlYWQgYXQgbGVhc3QgdG8gYQonVGltZWQgb3V0IHdhaXRpbmcgZm9yIERQIGlkbGUg cGF0dGVybnMnCmVycm9yLgoKQ2M6IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBsaW51 eC5pbnRlbC5jb20+CkNjOiBNYW5hc2kgTmF2YXJlIDxtYW5hc2kuZC5uYXZhcmVAaW50ZWwuY29t PgpTaWduZWQtb2ZmLWJ5OiBJbXJlIERlYWsgPGltcmUuZGVha0BpbnRlbC5jb20+Ci0tLQogZHJp dmVycy9ncHUvZHJtL2k5MTUvZGlzcGxheS9pbnRlbF9kcC5jIHwgMjUgKysrKysrKysrKysrKysr KysrLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDE4IGluc2VydGlvbnMoKyksIDcgZGVsZXRpb25z KC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvZGlzcGxheS9pbnRlbF9kcC5j IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvZGlzcGxheS9pbnRlbF9kcC5jCmluZGV4IDQyNTg5Y2Fl NzY2ZC4uYzU4NWIwMDI3ODNhIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9kaXNw bGF5L2ludGVsX2RwLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvZGlzcGxheS9pbnRlbF9k cC5jCkBAIC00NjgsNiArNDY4LDEzIEBAIGludCBpbnRlbF9kcF9nZXRfbGlua190cmFpbl9mYWxs YmFja192YWx1ZXMoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCwKIAlzdHJ1Y3QgZHJtX2k5MTVf cHJpdmF0ZSAqaTkxNSA9IGRwX3RvX2k5MTUoaW50ZWxfZHApOwogCWludCBpbmRleDsKIAorCS8q CisJICogVE9ETzogRW5hYmxlIGZhbGxiYWNrIG9uIE1TVCBsaW5rcyBvbmNlIE1TVCBsaW5rIGNv bXB1dGUgY2FuIGhhbmRsZQorCSAqIHRoZSBmYWxsYmFjayBwYXJhbXMuCisJICovCisJaWYgKGlu dGVsX2RwLT5pc19tc3QpCisJCXJldHVybiAtMTsKKwogCWluZGV4ID0gaW50ZWxfZHBfcmF0ZV9p bmRleChpbnRlbF9kcC0+Y29tbW9uX3JhdGVzLAogCQkJCSAgICBpbnRlbF9kcC0+bnVtX2NvbW1v bl9yYXRlcywKIAkJCQkgICAgbGlua19yYXRlKTsKQEAgLTYxNjMsNyArNjE3MCwxNyBAQCBpbnRl bF9kcF9kZXRlY3Qoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3RvciwKIAkJZ290byBvdXQ7 CiAJfQogCi0JaWYgKGludGVsX2RwLT5yZXNldF9saW5rX3BhcmFtcykgeworCS8qIFJlYWQgRFAg U2luayBEU0MgQ2FwIERQQ0QgcmVncyBmb3IgRFAgdjEuNCAqLworCWlmIChJTlRFTF9HRU4oZGV2 X3ByaXYpID49IDExKQorCQlpbnRlbF9kcF9nZXRfZHNjX3NpbmtfY2FwKGludGVsX2RwKTsKKwor CWludGVsX2RwX2NvbmZpZ3VyZV9tc3QoaW50ZWxfZHApOworCisJLyoKKwkgKiBUT0RPOiBSZXNl dCBsaW5rIHBhcmFtcyB3aGVuIHN3aXRjaGluZyB0byBNU1QgbW9kZSwgdW50aWwgTVNUCisJICog c3VwcG9ydHMgbGluayB0cmFpbmluZyBmYWxsYmFjayBwYXJhbXMuCisJICovCisJaWYgKGludGVs X2RwLT5yZXNldF9saW5rX3BhcmFtcyB8fCBpbnRlbF9kcC0+aXNfbXN0KSB7CiAJCS8qIEluaXRp YWwgbWF4IGxpbmsgbGFuZSBjb3VudCAqLwogCQlpbnRlbF9kcC0+bWF4X2xpbmtfbGFuZV9jb3Vu dCA9IGludGVsX2RwX21heF9jb21tb25fbGFuZV9jb3VudChpbnRlbF9kcCk7CiAKQEAgLTYxNzUs MTIgKzYxOTIsNiBAQCBpbnRlbF9kcF9kZXRlY3Qoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5l Y3RvciwKIAogCWludGVsX2RwX3ByaW50X3JhdGVzKGludGVsX2RwKTsKIAotCS8qIFJlYWQgRFAg U2luayBEU0MgQ2FwIERQQ0QgcmVncyBmb3IgRFAgdjEuNCAqLwotCWlmIChJTlRFTF9HRU4oZGV2 X3ByaXYpID49IDExKQotCQlpbnRlbF9kcF9nZXRfZHNjX3NpbmtfY2FwKGludGVsX2RwKTsKLQot CWludGVsX2RwX2NvbmZpZ3VyZV9tc3QoaW50ZWxfZHApOwotCiAJaWYgKGludGVsX2RwLT5pc19t c3QpIHsKIAkJLyoKIAkJICogSWYgd2UgYXJlIGluIE1TVCBtb2RlIHRoZW4gdGhpcyBjb25uZWN0 b3IKLS0gCjIuMjMuMQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Au b3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwt Z2Z4Cg==