From patchwork Tue Jan 15 09:15:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 10764115 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 11AA36C5 for ; Tue, 15 Jan 2019 09:15:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0421E2B268 for ; Tue, 15 Jan 2019 09:15:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ECC4F2B298; Tue, 15 Jan 2019 09:15:36 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,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 6DE812B27E for ; Tue, 15 Jan 2019 09:15:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728310AbfAOJPf (ORCPT ); Tue, 15 Jan 2019 04:15:35 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:42698 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725929AbfAOJPf (ORCPT ); Tue, 15 Jan 2019 04:15:35 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x0F9FUQw125989; Tue, 15 Jan 2019 03:15:30 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1547543731; bh=dEjhObeoLYo5bkbndho3KeoPPf8I0IhddokdBIOf3mE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=kDE6tL5+dqCxh11MokblBJWTQhDy7GDPClgmAzo9HQ6/gewrUYDAl+iGUdaSxqwM2 PytJOUUh60Lj/6I3nkrYrgkQyOpID7K0zOXit+SZ96vh7C87OEY/Hc/K6j9qcQVa8/ okgCdtIPeTZYjonn6O28KGi51n5Gs1sFnZAM6Wwc= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x0F9FUbU013223 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 15 Jan 2019 03:15:30 -0600 Received: from DLEE105.ent.ti.com (157.170.170.35) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Tue, 15 Jan 2019 03:15:29 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Tue, 15 Jan 2019 03:15:29 -0600 Received: from gomoku.home (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x0F9FNLh016112; Tue, 15 Jan 2019 03:15:26 -0600 From: Tero Kristo To: , , CC: , Subject: [PATCH 1/4] clk: ti: move clk_hw_omap list handling under generic part of the driver Date: Tue, 15 Jan 2019 11:15:12 +0200 Message-ID: <1547543715-16467-2-git-send-email-t-kristo@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1547543715-16467-1-git-send-email-t-kristo@ti.com> References: <1547543715-16467-1-git-send-email-t-kristo@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently the clk_hw_omap list is handled under the autoidle code, but it should be accessible generically. Add a few APIs towards this, and update the autoidle code to use the generic implementations. Signed-off-by: Tero Kristo --- drivers/clk/ti/autoidle.c | 65 +++++++++++++++++++---------------------------- drivers/clk/ti/clk.c | 42 ++++++++++++++++++++++++++++++ drivers/clk/ti/clock.h | 1 + 3 files changed, 69 insertions(+), 39 deletions(-) diff --git a/drivers/clk/ti/autoidle.c b/drivers/clk/ti/autoidle.c index 7bb9afb..a129b4b 100644 --- a/drivers/clk/ti/autoidle.c +++ b/drivers/clk/ti/autoidle.c @@ -35,7 +35,20 @@ struct clk_ti_autoidle { #define AUTOIDLE_LOW 0x1 static LIST_HEAD(autoidle_clks); -static LIST_HEAD(clk_hw_omap_clocks); + +static int _omap2_clk_deny_idle(struct clk_hw_omap *clk) +{ + if (clk->ops && clk->ops->deny_idle) + clk->ops->deny_idle(clk); + return 0; +} + +static int _omap2_clk_allow_idle(struct clk_hw_omap *clk) +{ + if (clk->ops && clk->ops->allow_idle) + clk->ops->allow_idle(clk); + return 0; +} /** * omap2_clk_deny_idle - disable autoidle on an OMAP clock @@ -45,12 +58,9 @@ struct clk_ti_autoidle { */ int omap2_clk_deny_idle(struct clk *clk) { - struct clk_hw_omap *c; + struct clk_hw_omap *c = to_clk_hw_omap(__clk_get_hw(clk)); - c = to_clk_hw_omap(__clk_get_hw(clk)); - if (c->ops && c->ops->deny_idle) - c->ops->deny_idle(c); - return 0; + return _omap2_clk_deny_idle(c); } /** @@ -61,12 +71,9 @@ int omap2_clk_deny_idle(struct clk *clk) */ int omap2_clk_allow_idle(struct clk *clk) { - struct clk_hw_omap *c; + struct clk_hw_omap *c = to_clk_hw_omap(__clk_get_hw(clk)); - c = to_clk_hw_omap(__clk_get_hw(clk)); - if (c->ops && c->ops->allow_idle) - c->ops->allow_idle(c); - return 0; + return _omap2_clk_allow_idle(c); } static void _allow_autoidle(struct clk_ti_autoidle *clk) @@ -168,26 +175,6 @@ int __init of_ti_clk_autoidle_setup(struct device_node *node) } /** - * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock - * @hw: struct clk_hw * to initialize - * - * Add an OMAP clock @clk to the internal list of OMAP clocks. Used - * temporarily for autoidle handling, until this support can be - * integrated into the common clock framework code in some way. No - * return value. - */ -void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw) -{ - struct clk_hw_omap *c; - - if (clk_hw_get_flags(hw) & CLK_IS_BASIC) - return; - - c = to_clk_hw_omap(hw); - list_add(&c->node, &clk_hw_omap_clocks); -} - -/** * omap2_clk_enable_autoidle_all - enable autoidle on all OMAP clocks that * support it * @@ -198,11 +185,11 @@ void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw) */ int omap2_clk_enable_autoidle_all(void) { - struct clk_hw_omap *c; + int ret; - list_for_each_entry(c, &clk_hw_omap_clocks, node) - if (c->ops && c->ops->allow_idle) - c->ops->allow_idle(c); + ret = omap2_clk_for_each(_omap2_clk_allow_idle); + if (ret) + return ret; _clk_generic_allow_autoidle_all(); @@ -220,11 +207,11 @@ int omap2_clk_enable_autoidle_all(void) */ int omap2_clk_disable_autoidle_all(void) { - struct clk_hw_omap *c; + int ret; - list_for_each_entry(c, &clk_hw_omap_clocks, node) - if (c->ops && c->ops->deny_idle) - c->ops->deny_idle(c); + ret = omap2_clk_for_each(_omap2_clk_deny_idle); + if (ret) + return ret; _clk_generic_deny_autoidle_all(); diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c index d0cd585..8172843 100644 --- a/drivers/clk/ti/clk.c +++ b/drivers/clk/ti/clk.c @@ -31,6 +31,7 @@ #undef pr_fmt #define pr_fmt(fmt) "%s: " fmt, __func__ +static LIST_HEAD(clk_hw_omap_clocks); struct ti_clk_ll_ops *ti_clk_ll_ops; static struct device_node *clocks_node_ptr[CLK_MAX_MEMMAPS]; @@ -517,3 +518,44 @@ struct clk *ti_clk_register(struct device *dev, struct clk_hw *hw, return clk; } + +/** + * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock + * @hw: struct clk_hw * to initialize + * + * Add an OMAP clock @clk to the internal list of OMAP clocks. Used + * temporarily for autoidle handling, until this support can be + * integrated into the common clock framework code in some way. No + * return value. + */ +void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw) +{ + struct clk_hw_omap *c; + + c = to_clk_hw_omap(hw); + list_add(&c->node, &clk_hw_omap_clocks); +} + +/** + * omap2_clk_for_each - call function for each registered clk_hw_omap + * @fn: pointer to a callback function + * + * Call @fn for each registered clk_hw_omap, passing @hw to each + * function. @fn must return 0 for success or any other value for + * failure. If @fn returns non-zero, the iteration across clocks + * will stop and the non-zero return value will be passed to the + * caller of omap2_clk_for_each(). + */ +int omap2_clk_for_each(int (*fn)(struct clk_hw_omap *hw)) +{ + int ret; + struct clk_hw_omap *hw; + + list_for_each_entry(hw, &clk_hw_omap_clocks, node) { + ret = (*fn)(hw); + if (ret) + break; + } + + return ret; +} diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h index 9f312a2..e5b8af3 100644 --- a/drivers/clk/ti/clock.h +++ b/drivers/clk/ti/clock.h @@ -301,6 +301,7 @@ long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw, unsigned long *parent_rate); int omap4_dpll_regm4xen_determine_rate(struct clk_hw *hw, struct clk_rate_request *req); +int omap2_clk_for_each(int (*fn)(struct clk_hw_omap *hw)); extern struct ti_clk_ll_ops *ti_clk_ll_ops;