From owner-freebsd-bugs@freebsd.org Sun Aug 12 20:09:02 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1E030107AE14 for ; Sun, 12 Aug 2018 20:09:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 995D877579 for ; Sun, 12 Aug 2018 20:09:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 5ABAC107AE13; Sun, 12 Aug 2018 20:09:01 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 496F1107AE12 for ; Sun, 12 Aug 2018 20:09:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DE13777574 for ; Sun, 12 Aug 2018 20:09:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 3668322557 for ; Sun, 12 Aug 2018 20:09:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w7CK90wW006324 for ; Sun, 12 Aug 2018 20:09:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w7CK90dH006323 for bugs@FreeBSD.org; Sun, 12 Aug 2018 20:09:00 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 221777] merge the latest changes to the ig4 module from DragonFly BSD and add Kaby Lake / Intel 100 series platform support Date: Sun, 12 Aug 2018 20:09:00 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: patch X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: marc.priggemeyer@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Aug 2018 20:09:02 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221777 --- Comment #7 from marc.priggemeyer@gmail.com --- (In reply to Oleksandr Tymoshenko from comment #6) Please consider these two parts from the patch I provided last year: In ig4_reg.h: +/* Newer versions of the I2C controller allow to check whether + * the above ASSERT/DEASSERT is necessary by querying the DEVIDLE_CONTROL + * register. + *=20 + * the RESTORE_REQUIRED bit can be cleared by writing 1 + * the DEVICE_IDLE status can be set to put the controller in an idle state + * */ + +#define IG4_RESTORE_REQUIRED 0x0008 +#define IG4_DEVICE_IDLE 0x0004 and in ig4_iic.c + v =3D reg_read(sc, IG4_REG_DEVIDLE_CTRL); + if (sc->version =3D=3D IG4_SKYLAKE && (v & IG4_RESTORE_REQUIRED) ) { + reg_write(sc, IG4_REG_DEVIDLE_CTRL, IG4_DEVICE_IDLE | IG4_RESTORE_REQUIRED); + reg_write(sc, IG4_REG_DEVIDLE_CTRL, 0); + + reg_write(sc, IG4_REG_RESETS_SKL, IG4_RESETS_ASSERT_SKL); + reg_write(sc, IG4_REG_RESETS_SKL, IG4_RESETS_DEASSERT_SKL); + DELAY(1000); + } This reinitialization makes sure to activate the I2C controller after power down if necessary. It is based on the Intel 100 series PCH documentation. --=20 You are receiving this mail because: You are the assignee for the bug.=