From patchwork Tue Oct 11 14:28:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 9371111 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 2E339607FD for ; Tue, 11 Oct 2016 14:29:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2039F29CAC for ; Tue, 11 Oct 2016 14:29:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1501A29CB1; Tue, 11 Oct 2016 14:29:59 +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 8513329CAC for ; Tue, 11 Oct 2016 14:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753582AbcJKO3e (ORCPT ); Tue, 11 Oct 2016 10:29:34 -0400 Received: from down.free-electrons.com ([37.187.137.238]:38424 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753525AbcJKO3c (ORCPT ); Tue, 11 Oct 2016 10:29:32 -0400 Received: by mail.free-electrons.com (Postfix, from userid 110) id 44AE02206; Tue, 11 Oct 2016 16:28:35 +0200 (CEST) Received: from localhost (unknown [94.186.205.99]) by mail.free-electrons.com (Postfix) with ESMTPSA id 0D098F28; Tue, 11 Oct 2016 16:28:35 +0200 (CEST) From: Maxime Ripard To: Mike Turquette , Stephen Boyd , Chen-Yu Tsai , Maxime Ripard Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-sunxi@googlegroups.com, Andre Przywara Subject: [PATCH v4 5/9] clk: sunxi-ng: Implement minimum for multipliers Date: Tue, 11 Oct 2016 16:28:23 +0200 Message-Id: X-Mailer: git-send-email 2.9.3 In-Reply-To: References: In-Reply-To: References: 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 Allow the CCU drivers to specify a multiplier for their clocks. Signed-off-by: Maxime Ripard Acked-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu_mult.c | 2 +- drivers/clk/sunxi-ng/ccu_mult.h | 13 +++++++++---- drivers/clk/sunxi-ng/ccu_nk.c | 8 ++++---- drivers/clk/sunxi-ng/ccu_nkm.c | 8 ++++---- drivers/clk/sunxi-ng/ccu_nkmp.c | 4 ++-- drivers/clk/sunxi-ng/ccu_nm.c | 2 +- 6 files changed, 21 insertions(+), 16 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu_mult.c b/drivers/clk/sunxi-ng/ccu_mult.c index 6a02ffee5386..678b6cb49f01 100644 --- a/drivers/clk/sunxi-ng/ccu_mult.c +++ b/drivers/clk/sunxi-ng/ccu_mult.c @@ -105,7 +105,7 @@ static int ccu_mult_set_rate(struct clk_hw *hw, unsigned long rate, ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1, &parent_rate); - _cm.min = 1; + _cm.min = cm->mult.min; _cm.max = 1 << cm->mult.width; ccu_mult_find_best(parent_rate, rate, &_cm); diff --git a/drivers/clk/sunxi-ng/ccu_mult.h b/drivers/clk/sunxi-ng/ccu_mult.h index 113780b7558e..c1a2134bdc71 100644 --- a/drivers/clk/sunxi-ng/ccu_mult.h +++ b/drivers/clk/sunxi-ng/ccu_mult.h @@ -7,14 +7,19 @@ struct ccu_mult_internal { u8 shift; u8 width; + u8 min; }; -#define _SUNXI_CCU_MULT(_shift, _width) \ - { \ - .shift = _shift, \ - .width = _width, \ +#define _SUNXI_CCU_MULT_MIN(_shift, _width, _min) \ + { \ + .shift = _shift, \ + .width = _width, \ + .min = _min, \ } +#define _SUNXI_CCU_MULT(_shift, _width) \ + _SUNXI_CCU_MULT_MIN(_shift, _width, 1) + struct ccu_mult { u32 enable; diff --git a/drivers/clk/sunxi-ng/ccu_nk.c b/drivers/clk/sunxi-ng/ccu_nk.c index a42d870ba0ef..eaf0fdf78d2b 100644 --- a/drivers/clk/sunxi-ng/ccu_nk.c +++ b/drivers/clk/sunxi-ng/ccu_nk.c @@ -97,9 +97,9 @@ static long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate, if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV) rate *= nk->fixed_post_div; - _nk.min_n = 1; + _nk.min_n = nk->n.min; _nk.max_n = 1 << nk->n.width; - _nk.min_k = 1; + _nk.min_k = nk->k.min; _nk.max_k = 1 << nk->k.width; ccu_nk_find_best(*parent_rate, rate, &_nk); @@ -122,9 +122,9 @@ static int ccu_nk_set_rate(struct clk_hw *hw, unsigned long rate, if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV) rate = rate * nk->fixed_post_div; - _nk.min_n = 1; + _nk.min_n = nk->n.min; _nk.max_n = 1 << nk->n.width; - _nk.min_k = 1; + _nk.min_k = nk->k.min; _nk.max_k = 1 << nk->k.width; ccu_nk_find_best(parent_rate, rate, &_nk); diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index b2a5fccf2f8c..715b49211ddb 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -100,9 +100,9 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux, struct ccu_nkm *nkm = data; struct _ccu_nkm _nkm; - _nkm.min_n = 1; + _nkm.min_n = nkm->n.min; _nkm.max_n = 1 << nkm->n.width; - _nkm.min_k = 1; + _nkm.min_n = nkm->k.min; _nkm.max_k = 1 << nkm->k.width; _nkm.min_m = 1; _nkm.max_m = nkm->m.max ?: 1 << nkm->m.width; @@ -129,9 +129,9 @@ static int ccu_nkm_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long flags; u32 reg; - _nkm.min_n = 1; + _nkm.min_n = nkm->n.min; _nkm.max_n = 1 << nkm->n.width; - _nkm.min_k = 1; + _nkm.min_n = nkm->k.min; _nkm.max_k = 1 << nkm->k.width; _nkm.min_m = 1; _nkm.max_m = nkm->m.max ?: 1 << nkm->m.width; diff --git a/drivers/clk/sunxi-ng/ccu_nkmp.c b/drivers/clk/sunxi-ng/ccu_nkmp.c index 2c1398192e48..7968e0bac5db 100644 --- a/drivers/clk/sunxi-ng/ccu_nkmp.c +++ b/drivers/clk/sunxi-ng/ccu_nkmp.c @@ -107,9 +107,9 @@ static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate, struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw); struct _ccu_nkmp _nkmp; - _nkmp.min_n = 1; + _nkmp.min_n = nkmp->n.min; _nkmp.max_n = 1 << nkmp->n.width; - _nkmp.min_k = 1; + _nkmp.min_n = nkmp->k.min; _nkmp.max_k = 1 << nkmp->k.width; _nkmp.min_m = 1; _nkmp.max_m = nkmp->m.max ?: 1 << nkmp->m.width; diff --git a/drivers/clk/sunxi-ng/ccu_nm.c b/drivers/clk/sunxi-ng/ccu_nm.c index 2a190bc032a9..b1f3f0e8899d 100644 --- a/drivers/clk/sunxi-ng/ccu_nm.c +++ b/drivers/clk/sunxi-ng/ccu_nm.c @@ -93,7 +93,7 @@ static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate, struct ccu_nm *nm = hw_to_ccu_nm(hw); struct _ccu_nm _nm; - _nm.min_n = 1; + _nm.min_n = nm->n.min; _nm.max_n = 1 << nm->n.width; _nm.min_m = 1; _nm.max_m = nm->m.max ?: 1 << nm->m.width;