From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manasi Navare Subject: [PATCH 2/4] drm/i915: Compute sink's max lane count/link BW at Hotplug Date: Mon, 5 Dec 2016 16:27:36 -0800 Message-ID: <1480984058-552-3-git-send-email-manasi.d.navare@intel.com> References: <1480984058-552-1-git-send-email-manasi.d.navare@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1480984058-552-1-git-send-email-manasi.d.navare@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Manasi Navare , Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org U2luaydzIGNhcGFiaWxpdGllcyBhcmUgYWR2ZXJ0aXNlZCB0aHJvdWdoIERQQ0QgcmVnaXN0ZXJz IGFuZCBnZXQKdXBkYXRlZCBvbmx5IG9uIGhvdHBsdWcuIFNvIHRoZXkgc2hvdWxkIGJlIGNvbXB1 dGVkIG9ubHkgb25jZSBpbiB0aGUKbG9uZyBwdWxzZSBoYW5kbGVyIGFuZCBzYXZlZCBvZmYgaW4g aW50ZWxfZHAgc3RydWN0dXJlIGZvciB0aGUgdXNlCmxhdGVyLiBGb3IgdGhpcyByZWFzb24gdHdv IG5ldyBmaWVsZHMgbWF4X3NpbmtfbGFuZV9jb3VudCBhbmQKbWF4X3NpbmtfbGlua19idyBhcmUg YWRkZWQgdG8gaW50ZWxfZHAgc3RydWN0dXJlLgoKVGhpcyBhbHNvIHNpbXBsaWZpZXMgdGhlIGZh bGxiYWNrIGxpbmsgcmF0ZS9sYW5lIGNvdW50IGxvZ2ljCnRvIGhhbmRsZSBsaW5rIHRyYWluaW5n IGZhaWx1cmUuIEluIHRoYXQgY2FzZSwgdGhlIG1heF9zaW5rX2xpbmtfYncKYW5kIG1heF9zaW5r X2xhbmVfY291bnQgY2FuIGJlIHJlY2NvbXB1dGVkIHRvIG1hdGNoIHRoZSBmYWxsYmFjawp2YWx1 ZXMgbG93ZXJpbmcgdGhlIHNpbmsgY2FwYWJpbGl0aWVzIGR1ZSB0byBsaW5rIHRyYWluIGZhaWx1 cmUuCgpDYzogVmlsbGUgU3lyamFsYSA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+CkNj OiBKYW5pIE5pa3VsYSA8amFuaS5uaWt1bGFAbGludXguaW50ZWwuY29tPgpDYzogRGFuaWVsIFZl dHRlciA8ZGFuaWVsLnZldHRlckBpbnRlbC5jb20+ClNpZ25lZC1vZmYtYnk6IE1hbmFzaSBOYXZh cmUgPG1hbmFzaS5kLm5hdmFyZUBpbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfZHAuYyAgfCAxMCArKysrKysrKy0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9k cnYuaCB8ICA0ICsrKysKIDIgZmlsZXMgY2hhbmdlZCwgMTIgaW5zZXJ0aW9ucygrKSwgMiBkZWxl dGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jIGIv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYwppbmRleCBkYjc1YmI5Li40MzRkYzdkIDEw MDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jCisrKyBiL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX2RwLmMKQEAgLTE1Niw3ICsxNTYsNyBAQCBzdGF0aWMgdTggaW50 ZWxfZHBfbWF4X2xhbmVfY291bnQoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCkKIAl1OCBzb3Vy Y2VfbWF4LCBzaW5rX21heDsKIAogCXNvdXJjZV9tYXggPSBpbnRlbF9kaWdfcG9ydC0+bWF4X2xh bmVzOwotCXNpbmtfbWF4ID0gZHJtX2RwX21heF9sYW5lX2NvdW50KGludGVsX2RwLT5kcGNkKTsK KwlzaW5rX21heCA9IGludGVsX2RwLT5tYXhfc2lua19sYW5lX2NvdW50OwogCiAJcmV0dXJuIG1p bihzb3VyY2VfbWF4LCBzaW5rX21heCk7CiB9CkBAIC0yMTMsNyArMjEzLDcgQEAgc3RhdGljIHU4 IGludGVsX2RwX21heF9sYW5lX2NvdW50KHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApCiAKIAkq c2lua19yYXRlcyA9IGRlZmF1bHRfcmF0ZXM7CiAKLQlyZXR1cm4gKGludGVsX2RwX21heF9saW5r X2J3KGludGVsX2RwKSA+PiAzKSArIDE7CisJcmV0dXJuIChpbnRlbF9kcC0+bWF4X3NpbmtfbGlu a19idyA+PiAzKSArIDE7CiB9CiAKIHN0YXRpYyBpbnQKQEAgLTQzOTUsNiArNDM5NSwxMiBAQCBz dGF0aWMgYm9vbCBpbnRlbF9kaWdpdGFsX3BvcnRfY29ubmVjdGVkKHN0cnVjdCBkcm1faTkxNV9w cml2YXRlICpkZXZfcHJpdiwKIAkJICAgICAgeWVzbm8oaW50ZWxfZHBfc291cmNlX3N1cHBvcnRz X2hicjIoaW50ZWxfZHApKSwKIAkJICAgICAgeWVzbm8oZHJtX2RwX3RwczNfc3VwcG9ydGVkKGlu dGVsX2RwLT5kcGNkKSkpOwogCisJLyogU2V0IHRoZSBtYXggbGFuZSBjb3VudCBmb3Igc2luayAq LworCWludGVsX2RwLT5tYXhfc2lua19sYW5lX2NvdW50ID0gZHJtX2RwX21heF9sYW5lX2NvdW50 KGludGVsX2RwLT5kcGNkKTsKKworCS8qIFNldCB0aGUgbWF4IGxpbmsgQlcgZm9yIHNpbmsgKi8K KwlpbnRlbF9kcC0+bWF4X3NpbmtfbGlua19idyA9IGludGVsX2RwX21heF9saW5rX2J3KGludGVs X2RwKTsKKwogCWludGVsX2RwX3ByaW50X3JhdGVzKGludGVsX2RwKTsKIAogCWludGVsX2RwX3Jl YWRfZGVzYyhpbnRlbF9kcCk7CmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9kcnYuaCBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCmluZGV4IGZkNzdhM2Iu LmI2NTI2YWQgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCisr KyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCkBAIC05MDYsNiArOTA2LDEwIEBA IHN0cnVjdCBpbnRlbF9kcCB7CiAJLyogc2luayByYXRlcyBhcyByZXBvcnRlZCBieSBEUF9TVVBQ T1JURURfTElOS19SQVRFUyAqLwogCXVpbnQ4X3QgbnVtX3NpbmtfcmF0ZXM7CiAJaW50IHNpbmtf cmF0ZXNbRFBfTUFYX1NVUFBPUlRFRF9SQVRFU107CisJLyogTWF4IGxhbmUgY291bnQgZm9yIHRo ZSBzaW5rIGFzIHBlciBEUENEIHJlZ2lzdGVycyAqLworCXVpbnQ4X3QgbWF4X3NpbmtfbGFuZV9j b3VudDsKKwkvKiBNYXggbGluayBCVyBmb3IgdGhlIHNpbmsgYXMgcGVyIERQQ0QgcmVnaXN0ZXJz ICovCisJaW50IG1heF9zaW5rX2xpbmtfYnc7CiAJLyogc2luayBvciBicmFuY2ggZGVzY3JpcHRv ciAqLwogCXN0cnVjdCBpbnRlbF9kcF9kZXNjIGRlc2M7CiAJc3RydWN0IGRybV9kcF9hdXggYXV4 OwotLSAKMS45LjEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9y ZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZl bAo=