From mboxrd@z Thu Jan 1 00:00:00 1970 From: Imre Deak Subject: [PATCH v2 2/2] drm/i915/bxt, glk: Avoid long atomic poll during CDCLK change Date: Tue, 30 Jan 2018 16:29:39 +0200 Message-ID: <20180130142939.17983-2-imre.deak@intel.com> References: <20180130142939.17983-1-imre.deak@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id F0D4589DC1 for ; Tue, 30 Jan 2018 14:29:42 +0000 (UTC) In-Reply-To: <20180130142939.17983-1-imre.deak@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org VGhlcmUgaXMgbm8gcmVxdWlyZW1lbnQgZm9yIGRvaW5nIHRoZSBQQ09ERSByZXF1ZXN0IHBvbGxp bmcgYXRvbWljYWxseSwKc28gZG8gdGhhdCBvbmx5IGZvciBhIHNob3J0IHRpbWUgc3dpdGNoaW5n IHRvIHNsZWVwaW5nIHBvbGwgYWZ0ZXJ3YXJkcy4KVGhlIHNwZWNpZmljYXRpb24gcmVxdWlyZXMg YSAxNTB1c2VjIHRpbWVvdXQgZm9yIHRoZSBjaGFuZ2Ugbm90aWZpY2F0aW9uLApzbyBsZXQncyB1 c2UgdGhhdCBmb3IgdGhlIGF0b21pYyBwb2xsLiBEbyB0aGUgZXh0cmEgMm1zIHBvbGwgLSBuZWVk ZWQgYXMKYSB3b3JrYXJvdW5kIG9uIEJYVC9HTEsgLSBpbiBzbGVlcGluZyBtb2RlLgoKdjI6Ci0g cmViYXNlIG9uIHYyIG9mIHBhdGNoc2V0IGRyb3BwaW5nIHRoZSBzYW5keWJyaWRnZV9wY29kZV9y ZWFkL3dyaXRlCiAgcmVmYWN0b3JpbmcgKENocmlzKQoKQ2M6IENocmlzIFdpbHNvbiA8Y2hyaXNA Y2hyaXMtd2lsc29uLmNvLnVrPgpDYzogVmlsbGUgU3lyasOkbMOkIDx2aWxsZS5zeXJqYWxhQGxp bnV4LmludGVsLmNvbT4KU2lnbmVkLW9mZi1ieTogSW1yZSBEZWFrIDxpbXJlLmRlYWtAaW50ZWwu Y29tPgotLS0KIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggICAgfCA1ICsrKy0tCiBk cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jZGNsay5jIHwgNCArKy0tCiBkcml2ZXJzL2dwdS9k cm0vaTkxNS9pbnRlbF9wbS5jICAgIHwgNiArKysrLS0KIDMgZmlsZXMgY2hhbmdlZCwgOSBpbnNl cnRpb25zKCspLCA2IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2k5MTVfZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oCmluZGV4IDdl ODNkMGQzZTYzMi4uMDhjNmM4MjRkN2Y4IDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkx NS9pOTE1X2Rydi5oCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmgKQEAgLTM3 MjQsOSArMzcyNCwxMCBAQCBleHRlcm4gdm9pZCBpbnRlbF9kaXNwbGF5X3ByaW50X2Vycm9yX3N0 YXRlKHN0cnVjdCBkcm1faTkxNV9lcnJvcl9zdGF0ZV9idWYgKmUsCiAKIGludCBzYW5keWJyaWRn ZV9wY29kZV9yZWFkKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgdTMyIG1ib3gs IHUzMiAqdmFsKTsKIGludCBzYW5keWJyaWRnZV9wY29kZV93cml0ZV90aW1lb3V0KHN0cnVjdCBk cm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgdTMyIG1ib3gsCi0JCQkJICAgIHUzMiB2YWwsIGlu dCB0aW1lb3V0X3VzKTsKKwkJCQkgICAgdTMyIHZhbCwgaW50IGZhc3RfdGltZW91dF91cywKKwkJ CQkgICAgaW50IHNsb3dfdGltZW91dF9tcyk7CiAjZGVmaW5lIHNhbmR5YnJpZGdlX3Bjb2RlX3dy aXRlKGRldl9wcml2LCBtYm94LCB2YWwpCVwKLQlzYW5keWJyaWRnZV9wY29kZV93cml0ZV90aW1l b3V0KGRldl9wcml2LCBtYm94LCB2YWwsIDUwMCkKKwlzYW5keWJyaWRnZV9wY29kZV93cml0ZV90 aW1lb3V0KGRldl9wcml2LCBtYm94LCB2YWwsIDUwMCwgMCkKIAogaW50IHNrbF9wY29kZV9yZXF1 ZXN0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgdTMyIG1ib3gsIHUzMiByZXF1 ZXN0LAogCQkgICAgICB1MzIgcmVwbHlfbWFzaywgdTMyIHJlcGx5LCBpbnQgdGltZW91dF9iYXNl X21zKTsKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2NkY2xrLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jZGNsay5jCmluZGV4IGE0MjNiNjc0ZmNlYy4uZWU3 ODhkNWJlNWUzIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jZGNsay5j CisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2NkY2xrLmMKQEAgLTEzNzgsNyArMTM3 OCw3IEBAIHN0YXRpYyB2b2lkIGJ4dF9zZXRfY2RjbGsoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUg KmRldl9wcml2LAogCW11dGV4X2xvY2soJmRldl9wcml2LT5wY3VfbG9jayk7CiAJcmV0ID0gc2Fu ZHlicmlkZ2VfcGNvZGVfd3JpdGVfdGltZW91dChkZXZfcHJpdiwKIAkJCQkJICAgICAgSFNXX1BD T0RFX0RFX1dSSVRFX0ZSRVFfUkVRLAotCQkJCQkgICAgICAweDgwMDAwMDAwLCAyMDAwKTsKKwkJ CQkJICAgICAgMHg4MDAwMDAwMCwgMTUwLCAyKTsKIAltdXRleF91bmxvY2soJmRldl9wcml2LT5w Y3VfbG9jayk7CiAKIAlpZiAocmV0KSB7CkBAIC0xNDE3LDcgKzE0MTcsNyBAQCBzdGF0aWMgdm9p ZCBieHRfc2V0X2NkY2xrKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwKIAkgKi8K IAlyZXQgPSBzYW5keWJyaWRnZV9wY29kZV93cml0ZV90aW1lb3V0KGRldl9wcml2LAogCQkJCQkg ICAgICBIU1dfUENPREVfREVfV1JJVEVfRlJFUV9SRVEsCi0JCQkJCSAgICAgIGNkY2xrX3N0YXRl LT52b2x0YWdlX2xldmVsLCAyMDAwKTsKKwkJCQkJICAgICAgY2RjbGtfc3RhdGUtPnZvbHRhZ2Vf bGV2ZWwsIDE1MCwgMik7CiAJbXV0ZXhfdW5sb2NrKCZkZXZfcHJpdi0+cGN1X2xvY2spOwogCiAJ aWYgKHJldCkgewpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYyBi L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3BtLmMKaW5kZXggYTYwOTg5MzJiZTVhLi4xOWYw MGY3Yzc4NjggMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3BtLmMKKysr IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYwpAQCAtOTE3MCw3ICs5MTcwLDggQEAg aW50IHNhbmR5YnJpZGdlX3Bjb2RlX3JlYWQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9w cml2LCB1MzIgbWJveCwgdTMyICp2YWwKIH0KIAogaW50IHNhbmR5YnJpZGdlX3Bjb2RlX3dyaXRl X3RpbWVvdXQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LAotCQkJCSAgICB1MzIg bWJveCwgdTMyIHZhbCwgaW50IHRpbWVvdXRfdXMpCisJCQkJICAgIHUzMiBtYm94LCB1MzIgdmFs LAorCQkJCSAgICBpbnQgZmFzdF90aW1lb3V0X3VzLCBpbnQgc2xvd190aW1lb3V0X21zKQogewog CWludCBzdGF0dXM7CiAKQEAgLTkxOTMsNyArOTE5NCw4IEBAIGludCBzYW5keWJyaWRnZV9wY29k ZV93cml0ZV90aW1lb3V0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwKIAogCWlm IChfX2ludGVsX3dhaXRfZm9yX3JlZ2lzdGVyX2Z3KGRldl9wcml2LAogCQkJCQkgR0VONl9QQ09E RV9NQUlMQk9YLCBHRU42X1BDT0RFX1JFQURZLCAwLAotCQkJCQkgdGltZW91dF91cywgMCwgTlVM TCkpIHsKKwkJCQkJIGZhc3RfdGltZW91dF91cywgc2xvd190aW1lb3V0X21zLAorCQkJCQkgTlVM TCkpIHsKIAkJRFJNX0VSUk9SKCJ0aW1lb3V0IHdhaXRpbmcgZm9yIHBjb2RlIHdyaXRlIG9mIDB4 JTA4eCB0byBtYm94ICV4IHRvIGZpbmlzaCBmb3IgJXBzXG4iLAogCQkJICB2YWwsIG1ib3gsIF9f YnVpbHRpbl9yZXR1cm5fYWRkcmVzcygwKSk7CiAJCXJldHVybiAtRVRJTUVET1VUOwotLSAKMi4x My4yCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRl bC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6 Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK