From patchwork Sat Jan 28 12:22:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 9543251 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0A99B60429 for ; Sat, 28 Jan 2017 12:30:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EFECB26242 for ; Sat, 28 Jan 2017 12:30:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E49FB28338; Sat, 28 Jan 2017 12:30:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8E1D626242 for ; Sat, 28 Jan 2017 12:30:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751680AbdA1M33 (ORCPT ); Sat, 28 Jan 2017 07:29:29 -0500 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:45552 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751659AbdA1M30 (ORCPT ); Sat, 28 Jan 2017 07:29:26 -0500 Received: by wens.csie.org (Postfix, from userid 1000) id 84F545FC47; Sat, 28 Jan 2017 20:22:43 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd Cc: Chen-Yu Tsai , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: [PATCH v2 03/10] clk: sunxi-ng: mux: Get closest parent rate possible with CLK_SET_RATE_PARENT Date: Sat, 28 Jan 2017 20:22:32 +0800 Message-Id: <20170128122239.4480-4-wens@csie.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170128122239.4480-1-wens@csie.org> References: <20170128122239.4480-1-wens@csie.org> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If the CLK_SET_RATE_PARENT flag is set, we want to try getting the closest parent rate. Signed-off-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu_mux.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c index d0d69c7eb516..c6bb1f523232 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.c +++ b/drivers/clk/sunxi-ng/ccu_mux.c @@ -93,7 +93,18 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common, if (!parent) continue; - parent_rate = clk_hw_get_rate(parent); + if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { + struct clk_rate_request parent_req = *req; + int ret = __clk_determine_rate(parent, &parent_req); + + if (ret) + continue; + + parent_rate = parent_req.rate; + } else { + parent_rate = clk_hw_get_rate(parent); + } + adj_parent_rate = parent_rate; ccu_mux_helper_adjust_parent_for_prediv(common, cm, i, &adj_parent_rate);