From patchwork Wed Jul 22 07:10:59 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 6840621 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B55A19F380 for ; Wed, 22 Jul 2015 07:14:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E2F76206F0 for ; Wed, 22 Jul 2015 07:14:18 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0930F20532 for ; Wed, 22 Jul 2015 07:14:18 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZHoCV-00066K-6V; Wed, 22 Jul 2015 07:12:23 +0000 Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZHoC5-0005vx-5V for linux-arm-kernel@lists.infradead.org; Wed, 22 Jul 2015 07:11:57 +0000 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 1BC5B140D09; Wed, 22 Jul 2015 07:11:39 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id 0D12A140D16; Wed, 22 Jul 2015 07:11:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from blr-ubuntu-34.ap.qualcomm.com (unknown [202.46.23.61]) (using TLSv1.1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: rnayak@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3CADB140D08; Wed, 22 Jul 2015 07:11:34 +0000 (UTC) From: Rajendra Nayak To: sboyd@codeaurora.org, mturquette@baylibre.com Subject: [PATCH v6 03/13] clk: qcom: gdsc: Use PM clocks to control gdsc clocks Date: Wed, 22 Jul 2015 12:40:59 +0530 Message-Id: <1437549069-29655-4-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1437549069-29655-1-git-send-email-rnayak@codeaurora.org> References: <1437549069-29655-1-git-send-email-rnayak@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150722_001157_237160_2AAB6A65 X-CRM114-Status: GOOD ( 16.16 ) X-Spam-Score: -3.1 (---) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rajendra Nayak , linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, svarbanov@mm-sol.com, srinivas.kandagatla@linaro.org, sviau@codeaurora.org, georgi.djakov@linaro.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The devices within a gdsc power domain, quite often have additional clocks to be turned on/off along with the power domain itself. Once the drivers for these devices are converted to use runtime PM, it would be possible to remove all clock handling from the drivers if the gdsc driver can handle it. Use PM clocks to add support for this. A list of con_ids[] specified per gdsc would be the clocks turned on/off on every device start/stop callbacks. Signed-off-by: Rajendra Nayak --- drivers/clk/qcom/gdsc.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index a59655b..3125809 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include "gdsc.h" @@ -104,6 +105,37 @@ static int gdsc_disable(struct generic_pm_domain *domain) return gdsc_toggle_logic(sc, false); } +static int gdsc_attach(struct generic_pm_domain *domain, struct device *dev) +{ + int ret; + struct gdsc *sc = domain_to_gdsc(domain); + char **con_id, *con_ids[] = { "core", "iface", NULL }; + + ret = pm_clk_create(dev); + if (ret) { + dev_err(dev, "pm_clk_create failed %d\n", ret); + return ret; + } + + for (con_id = con_ids; *con_id; con_id++) { + ret = pm_clk_add(dev, *con_id); + if (ret) { + dev_err(dev, "pm_clk_add failed %d\n", ret); + goto fail; + } + } + return 0; +fail: + pm_clk_destroy(dev); + return ret; +}; + +static void gdsc_detach(struct generic_pm_domain *domain, struct device *dev) +{ + pm_clk_destroy(dev); + return; +}; + static int gdsc_init(struct gdsc *sc) { u32 mask, val; @@ -127,6 +159,9 @@ static int gdsc_init(struct gdsc *sc) sc->pd.power_off = gdsc_disable; sc->pd.power_on = gdsc_enable; + sc->pd.attach_dev = gdsc_attach; + sc->pd.detach_dev = gdsc_detach; + sc->pd.flags = GENPD_FLAG_PM_CLK; pm_genpd_init(&sc->pd, NULL, !on); return 0;