From owner-svn-src-all@freebsd.org Mon Sep 21 09:50:58 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id B26D63EBFFB; Mon, 21 Sep 2020 09:50:58 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Bw07Q4GvXz42Jr; Mon, 21 Sep 2020 09:50:58 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 77053C3D5; Mon, 21 Sep 2020 09:50:58 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08L9ow3s083575; Mon, 21 Sep 2020 09:50:58 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08L9owpN083573; Mon, 21 Sep 2020 09:50:58 GMT (envelope-from avg@FreeBSD.org) Message-Id: <202009210950.08L9owpN083573@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Mon, 21 Sep 2020 09:50:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r365942 - in stable/12/sys: arm/allwinner/clkng dev/extres/clk X-SVN-Group: stable-12 X-SVN-Commit-Author: avg X-SVN-Commit-Paths: in stable/12/sys: arm/allwinner/clkng dev/extres/clk X-SVN-Commit-Revision: 365942 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Sep 2020 09:50:58 -0000 Author: avg Date: Mon Sep 21 09:50:57 2020 New Revision: 365942 URL: https://svnweb.freebsd.org/changeset/base/365942 Log: MFC r363887 (by manu), r365395: allwinner: clk: Fix nm clock calculation r363887: Use the right factor when finding the best frequency and compare the absolute value of the result. Submitted by: kibab r365395: aw_clk_nm: fix incorrect use of abs() abs() takes a (signed) int as input. Instead, it was used with unsigned 64-bit integers. So, add and use a new helper function to calculate a difference between two uint64_t-s. Modified: stable/12/sys/arm/allwinner/clkng/aw_clk_nm.c stable/12/sys/dev/extres/clk/clk.h Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/arm/allwinner/clkng/aw_clk_nm.c ============================================================================== --- stable/12/sys/arm/allwinner/clkng/aw_clk_nm.c Mon Sep 21 09:03:42 2020 (r365941) +++ stable/12/sys/arm/allwinner/clkng/aw_clk_nm.c Mon Sep 21 09:50:57 2020 (r365942) @@ -152,9 +152,10 @@ aw_clk_nm_find_best(struct aw_clk_nm_sc *sc, uint64_t min_n = aw_clk_factor_get_min(&sc->n); for (m = min_m; m <= max_m; ) { - for (n = min_m; n <= max_n; ) { + for (n = min_n; n <= max_n; ) { cur = fparent / n / m; - if (abs(*fout - cur) < abs(*fout - best)) { + if (clk_freq_diff(*fout, cur) < + clk_freq_diff(*fout, best)) { best = cur; *factor_n = n; *factor_m = m; @@ -197,7 +198,8 @@ aw_clk_nm_set_freq(struct clknode *clk, uint64_t fpare clknode_get_freq(p_clk, &fparent); cur = aw_clk_nm_find_best(sc, fparent, fout, &n, &m); - if ((*fout - cur) < (*fout - best)) { + if (clk_freq_diff(*fout, cur) < + clk_freq_diff(*fout, best)) { best = cur; best_parent = p_idx; best_n = n; Modified: stable/12/sys/dev/extres/clk/clk.h ============================================================================== --- stable/12/sys/dev/extres/clk/clk.h Mon Sep 21 09:03:42 2020 (r365941) +++ stable/12/sys/dev/extres/clk/clk.h Mon Sep 21 09:50:57 2020 (r365942) @@ -135,6 +135,12 @@ int clk_get_parent(clk_t clk, clk_t *parent); int clk_set_parent_by_clk(clk_t clk, clk_t parent); const char *clk_get_name(clk_t clk); +static inline uint64_t +clk_freq_diff(uint64_t x, uint64_t y) +{ + return (x >= y ? x - y : y - x); +} + #ifdef FDT int clk_set_assigned(device_t dev, phandle_t node); int clk_get_by_ofw_index(device_t dev, phandle_t node, int idx, clk_t *clk);