From patchwork Tue Jul 26 07:04:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 9247739 X-Patchwork-Delegate: sboyd@codeaurora.org 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 04B4A60757 for ; Tue, 26 Jul 2016 07:06:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E72312621E for ; Tue, 26 Jul 2016 07:06:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D9C0826A4D; Tue, 26 Jul 2016 07:06:44 +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=unavailable 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 D980B2621E for ; Tue, 26 Jul 2016 07:06:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755813AbcGZHFw (ORCPT ); Tue, 26 Jul 2016 03:05:52 -0400 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:52036 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755277AbcGZHEl (ORCPT ); Tue, 26 Jul 2016 03:04:41 -0400 Received: by wens.csie.org (Postfix, from userid 1000) id D80A75F99A; Tue, 26 Jul 2016 15:04:34 +0800 (CST) From: Chen-Yu Tsai To: Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland , Maxime Ripard Cc: dev@linux-sunxi.org, Chen-Yu Tsai , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/9] clk: sunxi-ng: mux: support fixed pre-dividers on multiple parents Date: Tue, 26 Jul 2016 15:04:27 +0800 Message-Id: <1469516671-19377-6-git-send-email-wens@csie.org> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1469516671-19377-1-git-send-email-wens@csie.org> References: <1469516671-19377-1-git-send-email-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 Some clocks on the A31 have fixed pre-dividers on multiple parents. Add support for them. Signed-off-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu-sun8i-h3.c | 9 +++++---- drivers/clk/sunxi-ng/ccu_mux.c | 6 ++++-- drivers/clk/sunxi-ng/ccu_mux.h | 10 ++++++---- 3 files changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-h3.c b/drivers/clk/sunxi-ng/ccu-sun8i-h3.c index 9af359544110..5f5c900c235b 100644 --- a/drivers/clk/sunxi-ng/ccu-sun8i-h3.c +++ b/drivers/clk/sunxi-ng/ccu-sun8i-h3.c @@ -184,15 +184,16 @@ static SUNXI_CCU_MP_WITH_MUX(apb2_clk, "apb2", apb2_parents, 0x058, 0); static const char * const ahb2_parents[] = { "ahb1" , "pll-periph0" }; +static const struct ccu_mux_fixed_prediv ahb2_fixed_predivs[] = { + { .index = 1, .div = 2}, + { }, +}; static struct ccu_mux ahb2_clk = { .mux = { .shift = 0, .width = 1, - .fixed_prediv = { - .index = 1, - .div = 2, - }, + .fixed_predivs = ahb2_fixed_predivs, }, .common = { diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c index 68b32f168a74..f96eabb5d1f3 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.c +++ b/drivers/clk/sunxi-ng/ccu_mux.c @@ -20,6 +20,7 @@ void ccu_mux_helper_adjust_parent_for_prediv(struct ccu_common *common, { u16 prediv = 1; u32 reg; + int i; if (!((common->features & CCU_FEATURE_FIXED_PREDIV) || (common->features & CCU_FEATURE_VARIABLE_PREDIV))) @@ -32,8 +33,9 @@ void ccu_mux_helper_adjust_parent_for_prediv(struct ccu_common *common, } if (common->features & CCU_FEATURE_FIXED_PREDIV) - if (parent_index == cm->fixed_prediv.index) - prediv = cm->fixed_prediv.div; + for (i = 0; cm->fixed_predivs[i].div; i++) + if (parent_index == cm->fixed_predivs[i].index) + prediv = cm->fixed_predivs[i].div; if (common->features & CCU_FEATURE_VARIABLE_PREDIV) if (parent_index == cm->variable_prediv.index) { diff --git a/drivers/clk/sunxi-ng/ccu_mux.h b/drivers/clk/sunxi-ng/ccu_mux.h index f0078de78712..28d16ec18d55 100644 --- a/drivers/clk/sunxi-ng/ccu_mux.h +++ b/drivers/clk/sunxi-ng/ccu_mux.h @@ -5,15 +5,17 @@ #include "ccu_common.h" +struct ccu_mux_fixed_prediv { + u8 index; + u16 div; +}; + struct ccu_mux_internal { u8 shift; u8 width; const u8 *table; - struct { - u8 index; - u16 div; - } fixed_prediv; + const struct ccu_mux_fixed_prediv *fixed_predivs; struct { u8 index;