From patchwork Wed Dec 20 18:20:44 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 10126303 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 64BD46019C for ; Wed, 20 Dec 2017 18:22:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C54D28563 for ; Wed, 20 Dec 2017 18:22:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50AC32975A; Wed, 20 Dec 2017 18:22:18 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D9DCE28563 for ; Wed, 20 Dec 2017 18:22:17 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=1gQ6LsrlNFCOXvpe8f8RhL16862YbuaEvjh7faLIgJk=; b=YXeDeThAjFnplRBVkU2Yk8wmff U5e6fCrxAFnTYOW/a4yRIiAxyDTk9HizbQpbcFLF+CD5g7UY9VoXs6ukGyIDJ+W3FRqyJp9I78LpM 6XryQJQtml/CA/R3bCPvDyxb0pyabXhH3IzCuspiN5TYoGwFPJM8+LigGUQ/EWtajCqY7G/NLMwbL y/tiveHJbt7ReKwmWbDzqWpWgZzpnYTinDBLktl/OA0eWiJN2V6PR/iLZeRTUHowcWVJK26jLJ91d 23qcOhWxjtanO5L0WkFNOMxeZ2ImwvK8mz2gBBSYbqUQePzHJYTOc0nv1cc2asWnB6OEUx20ng5Mk v5qLEwYg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1eRj0Q-0001jB-Io; Wed, 20 Dec 2017 18:22:14 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1eRizQ-00013f-EG; Wed, 20 Dec 2017 18:21:14 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 6BDDC270B9B From: Enric Balletbo i Serra To: Mark Yao , David Airlie , Heiko Stuebner , Sean Paul Subject: [PATCH 2/2] drm/rockchip: Remove analogix psr worker. Date: Wed, 20 Dec 2017 19:20:44 +0100 Message-Id: <20171220182044.20331-3-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20171220182044.20331-1-enric.balletbo@collabora.com> References: <20171220182044.20331-1-enric.balletbo@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171220_102112_715476_765A676B X-CRM114-Status: UNSURE ( 9.93 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wzz@rock-chips.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, marcheu@chromium.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sean Paul Now that the spinlocks and timers are gone, we can remove the psr worker located in rockchip's analogix driver and do the enable/disable directly. This should simplify the code and remove races on disable. Signed-off-by: Sean Paul Signed-off-by: Enric Balletbo i Serra --- drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 30 ++----------------------- 1 file changed, 2 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 93b7102..d32c9b3 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -71,10 +71,6 @@ struct rockchip_dp_device { struct regmap *grf; struct reset_control *rst; - struct work_struct psr_work; - struct mutex psr_lock; - unsigned int psr_state; - const struct rockchip_dp_chip_data *data; struct analogix_dp_plat_data plat_data; @@ -83,27 +79,13 @@ struct rockchip_dp_device { static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) { struct rockchip_dp_device *dp = to_dp(encoder); + int ret; if (!analogix_dp_psr_supported(dp->dev)) return; DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit"); - mutex_lock(&dp->psr_lock); - if (enabled) - dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE; - else - dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE; - - schedule_work(&dp->psr_work); - mutex_unlock(&dp->psr_lock); -} - -static void analogix_dp_psr_work(struct work_struct *work) -{ - struct rockchip_dp_device *dp = - container_of(work, typeof(*dp), psr_work); - int ret; ret = rockchip_drm_wait_vact_end(dp->encoder.crtc, PSR_WAIT_LINE_FLAG_TIMEOUT_MS); @@ -112,12 +94,10 @@ static void analogix_dp_psr_work(struct work_struct *work) return; } - mutex_lock(&dp->psr_lock); - if (dp->psr_state == EDP_VSC_PSR_STATE_ACTIVE) + if (enabled) analogix_dp_enable_psr(dp->dev); else analogix_dp_disable_psr(dp->dev); - mutex_unlock(&dp->psr_lock); } static int rockchip_dp_pre_init(struct rockchip_dp_device *dp) @@ -134,8 +114,6 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data) struct rockchip_dp_device *dp = to_dp(plat_data); int ret; - cancel_work_sync(&dp->psr_work); - ret = clk_prepare_enable(dp->pclk); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "failed to enable pclk %d\n", ret); @@ -379,10 +357,6 @@ static int rockchip_dp_bind(struct device *dev, struct device *master, dp->plat_data.power_off = rockchip_dp_powerdown; dp->plat_data.get_modes = rockchip_dp_get_modes; - mutex_init(&dp->psr_lock); - dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE; - INIT_WORK(&dp->psr_work, analogix_dp_psr_work); - rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set); return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);