From patchwork Wed Sep 25 19:12:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 11161301 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 44CCE912 for ; Wed, 25 Sep 2019 19:13:15 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2352A21D7F for ; Wed, 25 Sep 2019 19:13:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="UEYUkjcJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2352A21D7F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Qs5CiBk2h/EyZ4bfLGAKbWyvoQZjEOU7IQcyeiaJek8=; b=UEYUkjcJH6IQRU fs8t/nTPlzJ5sN8XuDx2gDOMmhTjAz0DrKLalUl3OzMbQVXQSSQueRFYneHWoF5EJqhtXpaxx0QZY Uq0zRJ/wd1UZBScumLJt+sXXVKjMBtqafwWxZCdFrHXM3emFdVhE4t+8mHI4pGcGbCJ6ZZaHf6b4X qNw6znwMxKQnA9PoR+2/MmeIaCrEFLg/QCdVlEtM8Kv2Dd+uzxR90NOWlHf0kXJGoaBlW2kWj4vuC za9+/bOvsA1s622h6kqpnXa86R0gWfEya7Vjo9KZRkGT79wFGyNgeGrZy90G0k0yToS4eN2JkK8MZ MuV9ts+EN9d/xQ+QE09g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDCiw-0001nR-4M; Wed, 25 Sep 2019 19:13:14 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDCiI-0001Ck-Sv; Wed, 25 Sep 2019 19:12:37 +0000 Received: from localhost (c-71-197-186-152.hsd1.wa.comcast.net [71.197.186.152]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5496621D7F; Wed, 25 Sep 2019 19:12:34 +0000 (UTC) From: Kevin Hilman To: linux-amlogic@lists.infradead.org, Neil Armstrong Subject: [PATCH 2/2] soc: amlogic: ee-pwrc: ensure driver state maches HW state Date: Wed, 25 Sep 2019 12:12:33 -0700 Message-Id: <20190925191233.22253-3-khilman@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190925191233.22253-1-khilman@baylibre.com> References: <20190925191233.22253-1-khilman@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190925_121234_948145_3E6F2EB1 X-CRM114-Status: GOOD ( 13.54 ) X-Spam-Score: -4.8 (----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-4.8 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org During init, ensure that the driver on/off state as well as clock state matches the hardware state by calling drivers on/off functions based on whether the HW state is on/off. Signed-off-by: Kevin Hilman --- drivers/soc/amlogic/meson-ee-pwrc.c | 30 +++++++++-------------------- 1 file changed, 9 insertions(+), 21 deletions(-) diff --git a/drivers/soc/amlogic/meson-ee-pwrc.c b/drivers/soc/amlogic/meson-ee-pwrc.c index dcce8e694a07..2cb5341aedfa 100644 --- a/drivers/soc/amlogic/meson-ee-pwrc.c +++ b/drivers/soc/amlogic/meson-ee-pwrc.c @@ -323,6 +323,8 @@ static int meson_ee_pwrc_init_domain(struct platform_device *pdev, struct meson_ee_pwrc *pwrc, struct meson_ee_pwrc_domain *dom) { + bool is_off; + dom->pwrc = pwrc; dom->num_rstc = dom->desc.reset_names_count; dom->num_clks = dom->desc.clk_names_count; @@ -356,27 +358,13 @@ static int meson_ee_pwrc_init_domain(struct platform_device *pdev, dom->base.power_on = meson_ee_pwrc_on; dom->base.power_off = meson_ee_pwrc_off; - /* - * TOFIX: This is a special case for the VPU power domain, which can - * be enabled previously by the bootloader. In this case the VPU - * pipeline may be functional but no driver maybe never attach - * to this power domain, and if the domain is disabled it could - * cause system errors. This is why the pm_domain_always_on_gov - * is used here. - * For the same reason, the clocks should be enabled in case - * we need to power the domain off, otherwise the internal clocks - * prepare/enable counters won't be in sync. - */ - if (dom->num_clks && dom->desc.is_off && !dom->desc.is_off(dom)) { - int ret = clk_bulk_prepare_enable(dom->num_clks, dom->clks); - if (ret) - return ret; - - pm_genpd_init(&dom->base, &pm_domain_always_on_gov, false); - } else - pm_genpd_init(&dom->base, NULL, - (dom->desc.is_off ? - dom->desc.is_off(dom) : true)); + /* Ensure that driver state matches HW state */ + is_off = dom->desc.is_off ? dom->desc.is_off(dom) : true; + if (is_off) + meson_ee_pwrc_off(&dom->base); + else + meson_ee_pwrc_on(&dom->base); + pm_genpd_init(&dom->base, NULL, is_off); return 0; }