From mboxrd@z Thu Jan 1 00:00:00 1970 From: deepak.s@intel.com Subject: [PATCH v7] drm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated. Date: Fri, 31 Jan 2014 23:15:02 +0530 Message-ID: <1391190302-23073-1-git-send-email-deepak.s@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 3A5EC11D525 for ; Fri, 31 Jan 2014 09:44:09 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org Cc: Deepak S List-Id: intel-gfx@lists.freedesktop.org RnJvbTogRGVlcGFrIFMgPGRlZXBhay5zQGludGVsLmNvbT4KCldoZW4gd2UgZW50ZXIgUkM2IGFu ZCBHRlggQ2xvY2tzIGFyZSBvZmYsIHRoZSB2b2x0YWdlIHJlbWFpbnMgaGlnaGVyCnRoYW4gVm1p bi4gV2hlbiB3ZSB0cnkgdG8gc2V0IHRoZSBmcmVxIHRvIFJQbiwgaXQgbWlnaHQgZmFpbCBzaW5j ZSB0aGUKR2Z4IGNsb2NrcyBhcmUgZG93bi4gU28gdG8gZml4IHRoaXMgaW4gR2Z4IGlkbGUsIEJy aW5nIHRoZSBHRlggY2xvY2sgdXAKYW5kIHNldCB0aGUgZnJlcSB0byBSUG4gdGhlbiBtb3ZlIEdG eCBkb3duLgoKdjI6IHJlbW92ZSB2bHZfdXBkYXRlX3Jwc19jdXJfZGVsYXkgZnVuY3Rpb24uIFVw ZGF0ZSBjb21taXQgbWVzc2FnZSAoRGFuaWVsKQoKdjM6IEZpeCB0aGUgdGltZW91dCBkdXJpbmcg d2FpdCBmb3IgZ2Z4IGNsb2NrIChKZXNzZSkKCnY0OiBhZGRyZXNzZWQgY29tbWVudHMgb24gc2V0 IGZyZXEgYW5kIHB1bml0IHdhaXQgKFZpbGxlKQoKdjU6IHVzZSB3YWl0X2ZvciB3aGlsZSB3YWl0 aW5nIGZvciBHRlggY2xrIHRvIGJlIHVwLiAoRGFuaWVsKQogICAgdXBkYXRlIGN1cl9kZWxheSBi ZWZvcmUgcmVxdWVzdGluZyBtaW5fZGVsYXkuIChWaWxsZSkKCnY2OiB1c2Ugd2FpdF9mb3Igd2hp bGUgd2FpdGluZyBmb3IgcHVuaXQuIChWaWxsZSkKCnY3OiBDb3JyZWN0IHJldmlld2VyJ3MgbmFt ZSAoVmlsbGUpCgpTaWduZWQtb2ZmLWJ5OiBEZWVwYWsgUyA8ZGVlcGFrLnNAaW50ZWwuY29tPgpS ZXZpZXdlZC1ieTogVmlsbGUgU3lyasOkbMOkIDx2aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNv bT4KLS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oIHwgIDIgKysKIGRyaXZlcnMv Z3B1L2RybS9pOTE1L2k5MTVfaXJxLmMgfCAgMiArLQogZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9yZWcuaCB8ICA0ICsrKwogZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYyB8IDU1ICsr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKystCiA0IGZpbGVzIGNoYW5nZWQs IDYxIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9n cHUvZHJtL2k5MTUvaTkxNV9kcnYuaCBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmgK aW5kZXggYWM1Y2Q3ZS4uNmY5MTA4ZCAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv aTkxNV9kcnYuaAorKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oCkBAIC0xOTYx LDYgKzE5NjEsOCBAQCBleHRlcm4gdm9pZCBpbnRlbF9jb25zb2xlX3Jlc3VtZShzdHJ1Y3Qgd29y a19zdHJ1Y3QgKndvcmspOwogdm9pZCBpOTE1X3F1ZXVlX2hhbmdjaGVjayhzdHJ1Y3QgZHJtX2Rl dmljZSAqZGV2KTsKIHZvaWQgaTkxNV9oYW5kbGVfZXJyb3Ioc3RydWN0IGRybV9kZXZpY2UgKmRl diwgYm9vbCB3ZWRnZWQpOwogCit2b2lkIGdlbjZfc2V0X3BtX21hc2soc3RydWN0IGRybV9pOTE1 X3ByaXZhdGUgKmRldl9wcml2LCB1MzIgcG1faWlyLAorCQkJCQkJCWludCBuZXdfZGVsYXkpOwog ZXh0ZXJuIHZvaWQgaW50ZWxfaXJxX2luaXQoc3RydWN0IGRybV9kZXZpY2UgKmRldik7CiBleHRl cm4gdm9pZCBpbnRlbF9ocGRfaW5pdChzdHJ1Y3QgZHJtX2RldmljZSAqZGV2KTsKIApkaWZmIC0t Z2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9pcnEuYyBiL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2k5MTVfaXJxLmMKaW5kZXggYjIyNmFlNi4uYWNiZWU3MyAxMDA2NDQKLS0tIGEvZHJpdmVy cy9ncHUvZHJtL2k5MTUvaTkxNV9pcnEuYworKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1 X2lycS5jCkBAIC05ODYsNyArOTg2LDcgQEAgc3RhdGljIHZvaWQgbm90aWZ5X3Jpbmcoc3RydWN0 IGRybV9kZXZpY2UgKmRldiwKIAlpOTE1X3F1ZXVlX2hhbmdjaGVjayhkZXYpOwogfQogCi1zdGF0 aWMgdm9pZCBnZW42X3NldF9wbV9tYXNrKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJp diwKK3ZvaWQgZ2VuNl9zZXRfcG1fbWFzayhzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3By aXYsCiAJCQkgICAgIHUzMiBwbV9paXIsIGludCBuZXdfZGVsYXkpCiB7CiAJaWYgKHBtX2lpciAm IEdFTjZfUE1fUlBfVVBfVEhSRVNIT0xEKSB7CmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0v aTkxNS9pOTE1X3JlZy5oIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9yZWcuaAppbmRleCBj YmJhZjI2Li4wMGQyZjJkIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3Jl Zy5oCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfcmVnLmgKQEAgLTQ5NDksNiArNDk0 OSwxMCBAQAogCQkJCQkJIEdFTjZfUE1fUlBfRE9XTl9USFJFU0hPTEQgfCBcCiAJCQkJCQkgR0VO Nl9QTV9SUF9ET1dOX1RJTUVPVVQpCiAKKyNkZWZpbmUgVkxWX0dUTENfU1VSVklWQUJJTElUWV9S RUcgICAgICAgICAgICAgIDB4MTMwMDk4CisjZGVmaW5lIFZMVl9HRlhfQ0xLX1NUQVRVU19CSVQJ CQkoMTw8MykKKyNkZWZpbmUgVkxWX0dGWF9DTEtfRk9SQ0VfT05fQklUCQkoMTw8MikKKwogI2Rl ZmluZSBHRU42X0dUX0dGWF9SQzZfTE9DS0VECQkJMHgxMzgxMDQKICNkZWZpbmUgVkxWX0NPVU5U RVJfQ09OVFJPTAkJCTB4MTM4MTA0CiAjZGVmaW5lICAgVkxWX0NPVU5UX1JBTkdFX0hJR0gJCQko MTw8MTUpCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wbS5jIGIvZHJp dmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYwppbmRleCA0ODc2YmE1Li4zYjVhMWI5IDEwMDY0 NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wbS5jCisrKyBiL2RyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX3BtLmMKQEAgLTMwMzgsNiArMzAzOCw1OCBAQCB2b2lkIGdlbjZfc2V0 X3JwcyhzdHJ1Y3QgZHJtX2RldmljZSAqZGV2LCB1OCB2YWwpCiAJdHJhY2VfaW50ZWxfZ3B1X2Zy ZXFfY2hhbmdlKHZhbCAqIDUwKTsKIH0KIAorLyogdmx2X3NldF9ycHNfaWRsZTogU2V0IHRoZSBm cmVxdWVuY3kgdG8gUnBuIGlmIEdmeCBjbG9ja3MgYXJlIGRvd24KKyAqCisgKiAqIElmIEdmeCBp cyBJZGxlLCB0aGVuCisgKiAxLiBNYXNrIFR1cmJvIGludGVycnVwdHMKKyAqIDIuIEJyaW5nIHVw IEdmeCBjbG9jaworICogMy4gQ2hhbmdlIHRoZSBmcmVxIHRvIFJwbiBhbmQgd2FpdCB0aWxsIFAt VW5pdCB1cGRhdGVzIGZyZXEKKyAqIDQuIENsZWFyIHRoZSBGb3JjZSBHRlggQ0xLIE9OIGJpdCBz byB0aGF0IEdmeCBjYW4gZG93bgorICogNS4gVW5tYXNrIFR1cmJvIGludGVycnVwdHMKKyovCitz dGF0aWMgdm9pZCB2bHZfc2V0X3Jwc19pZGxlKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZf cHJpdikKK3sKKwkvKgorCSAqIFdoZW4gd2UgYXJlIGlkbGUuICBEcm9wIHRvIG1pbiB2b2x0YWdl IHN0YXRlLgorCSAqLworCisJaWYgKGRldl9wcml2LT5ycHMuY3VyX2RlbGF5IDw9IGRldl9wcml2 LT5ycHMubWluX2RlbGF5KQorCQlyZXR1cm47CisKKwkvKiBNYXNrIHR1cmJvIGludGVycnVwdCBz byB0aGF0IHRoZXkgd2lsbCBub3QgY29tZSBpbiBiZXR3ZWVuICovCisJSTkxNV9XUklURShHRU42 X1BNSU5UUk1TSywgMHhmZmZmZmZmZik7CisKKwkvKiBCcmluZyB1cCB0aGUgR2Z4IGNsb2NrICov CisJSTkxNV9XUklURShWTFZfR1RMQ19TVVJWSVZBQklMSVRZX1JFRywKKwkJSTkxNV9SRUFEKFZM Vl9HVExDX1NVUlZJVkFCSUxJVFlfUkVHKSB8CisJCQkJVkxWX0dGWF9DTEtfRk9SQ0VfT05fQklU KTsKKworCWlmICh3YWl0X2ZvcigoKFZMVl9HRlhfQ0xLX1NUQVRVU19CSVQgJgorCQlJOTE1X1JF QUQoVkxWX0dUTENfU1VSVklWQUJJTElUWV9SRUcpKSAhPSAwKSwgNSkpIHsKKwkJCURSTV9FUlJP UigiR0ZYX0NMS19PTiByZXF1ZXN0IHRpbWVkIG91dFxuIik7CisJCXJldHVybjsKKwl9CisKKwlk ZXZfcHJpdi0+cnBzLmN1cl9kZWxheSA9IGRldl9wcml2LT5ycHMubWluX2RlbGF5OworCisJdmx2 X3B1bml0X3dyaXRlKGRldl9wcml2LCBQVU5JVF9SRUdfR1BVX0ZSRVFfUkVRLAorCQkJCQlkZXZf cHJpdi0+cnBzLm1pbl9kZWxheSk7CisKKwlpZiAod2FpdF9mb3IoKCh2bHZfcHVuaXRfcmVhZChk ZXZfcHJpdiwgUFVOSVRfUkVHX0dQVV9GUkVRX1NUUykpCisJCQkJJiBHRU5GUkVRU1RBVFVTKSA9 PSAwLCA1KSkKKwkJRFJNX0VSUk9SKCJ0aW1lZCBvdXQgd2FpdGluZyBmb3IgUHVuaXRcbiIpOwor CisJLyogUmVsZWFzZSB0aGUgR2Z4IGNsb2NrICovCisJSTkxNV9XUklURShWTFZfR1RMQ19TVVJW SVZBQklMSVRZX1JFRywKKwkJSTkxNV9SRUFEKFZMVl9HVExDX1NVUlZJVkFCSUxJVFlfUkVHKSAm CisJCQkJflZMVl9HRlhfQ0xLX0ZPUkNFX09OX0JJVCk7CisKKwkvKiBVbm1hc2sgVXAgaW50ZXJy dXB0cyAqLworCWRldl9wcml2LT5ycHMucnBfdXBfbWFza2VkID0gdHJ1ZTsKKwlnZW42X3NldF9w bV9tYXNrKGRldl9wcml2LCBHRU42X1BNX1JQX0RPV05fVEhSRVNIT0xELAorCQkJCQkJZGV2X3By aXYtPnJwcy5taW5fZGVsYXkpOworfQorCiB2b2lkIGdlbjZfcnBzX2lkbGUoc3RydWN0IGRybV9p OTE1X3ByaXZhdGUgKmRldl9wcml2KQogewogCXN0cnVjdCBkcm1fZGV2aWNlICpkZXYgPSBkZXZf cHJpdi0+ZGV2OwpAQCAtMzA0NSw3ICszMDk3LDcgQEAgdm9pZCBnZW42X3Jwc19pZGxlKHN0cnVj dCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdikKIAltdXRleF9sb2NrKCZkZXZfcHJpdi0+cnBz Lmh3X2xvY2spOwogCWlmIChkZXZfcHJpdi0+cnBzLmVuYWJsZWQpIHsKIAkJaWYgKElTX1ZBTExF WVZJRVcoZGV2KSkKLQkJCXZhbGxleXZpZXdfc2V0X3JwcyhkZXZfcHJpdi0+ZGV2LCBkZXZfcHJp di0+cnBzLm1pbl9kZWxheSk7CisJCQl2bHZfc2V0X3Jwc19pZGxlKGRldl9wcml2KTsKIAkJZWxz ZQogCQkJZ2VuNl9zZXRfcnBzKGRldl9wcml2LT5kZXYsIGRldl9wcml2LT5ycHMubWluX2RlbGF5 KTsKIAkJZGV2X3ByaXYtPnJwcy5sYXN0X2FkaiA9IDA7CkBAIC00Mjc2LDYgKzQzMjgsNyBAQCB2 b2lkIGludGVsX2dwdV9pcHNfdGVhcmRvd24odm9pZCkKIAlpOTE1X21jaF9kZXYgPSBOVUxMOwog CXNwaW5fdW5sb2NrX2lycSgmbWNoZGV2X2xvY2spOwogfQorCiBzdGF0aWMgdm9pZCBpbnRlbF9p bml0X2Vtb24oc3RydWN0IGRybV9kZXZpY2UgKmRldikKIHsKIAlzdHJ1Y3QgZHJtX2k5MTVfcHJp dmF0ZSAqZGV2X3ByaXYgPSBkZXYtPmRldl9wcml2YXRlOwotLSAKMS44LjUuMgoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcg bGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK