From patchwork Fri Mar 9 22:23:10 2018 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: 10272433 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 660FB605CE for ; Fri, 9 Mar 2018 22:39:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4FBA429FF9 for ; Fri, 9 Mar 2018 22:39:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 421E22A02B; Fri, 9 Mar 2018 22:39:11 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9862329FF9 for ; Fri, 9 Mar 2018 22:39:10 +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=PZFXSTss08D0bKSHigqWtKTAt7K8VwL//CbutHbFa0k=; b=KLPJSI0KEoWDaWyzpmkDnkOLhn OK8Ka3YhA1RG9+HYfs6GoQ8nloxQq1WPX5/c7M5WjBZER62Vg2ECfhgXFZeQIPBbGHrAhfjcIF7ve bsfCvOCjUnwgJ3Cl0aPoPpjCkHkzZ/dJTgJgKcB7l5PK+AqLz/O1AIkdkMj27Rh8brj4RXOCszjfT tGwRQvLGY6mqIAsavUrVBunggwUbJABJSmY+Yiq5Bgrm2yD4P+s7fcYhEJex4nfzeVwT2Opdwd+b0 5SQefZfoKPwZLs/7hw5bgUP4slFG9RXigocYFtG+mgvXrK55rgl/u4/GzQI3I4P5lUooRxlA7ahNG yuy8DV+w==; 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 1euQfH-0007qm-TB; Fri, 09 Mar 2018 22:39:03 +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 1euQRO-0004Nh-Dt; Fri, 09 Mar 2018 22:25:13 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 007CB2792DE From: Enric Balletbo i Serra To: architt@codeaurora.org, inki.dae@samsung.com, thierry.reding@gmail.com, hjc@rock-chips.com, seanpaul@chromium.org, airlied@linux.ie, tfiga@chromium.org, heiko@sntech.de Subject: [PATCH v5 19/36] drm/rockchip: Restore psr->state when enable/disable psr failed Date: Fri, 9 Mar 2018 23:23:10 +0100 Message-Id: <20180309222327.18689-20-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180309222327.18689-1-enric.balletbo@collabora.com> References: <20180309222327.18689-1-enric.balletbo@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180309_142443_547742_AAA5A1B0 X-CRM114-Status: GOOD ( 13.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, ykk@rock-chips.com, kernel@collabora.com, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, rydberg@bitmath.org, krzk@kernel.org, linux-rockchip@lists.infradead.org, kgene@kernel.org, linux-input@vger.kernel.org, orjan.eide@arm.com, wxt@rock-chips.com, jeffy.chen@rock-chips.com, linux-arm-kernel@lists.infradead.org, mark.yao@rock-chips.com, wzz@rock-chips.com, hl@rock-chips.com, jingoohan1@gmail.com, sw0312.kim@samsung.com, dianders@chromium.org, kyungmin.park@samsung.com, Enric Balletbo i Serra , kuankuan.y@gmail.com, hshi@chromium.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 From: zain wang If we failed disable psr, it would hang the display until next psr cycle coming. So we should restore psr->state when it failed. Cc: Tomasz Figa Signed-off-by: zain wang Signed-off-by: Douglas Anderson Signed-off-by: Sean Paul Signed-off-by: Thierry Escande Signed-off-by: Enric Balletbo i Serra Tested-by: Marek Szyprowski Reviewed-by: Heiko Stuebner Reviewed-by: Archit Taneja --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 +++- drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 10 +++++----- drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 20 +++++++++++++------- drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 2 +- 4 files changed, 22 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index be6eddd0d0a7..1f1cb624414d 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -153,8 +153,10 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp) psr_vsc.DB1 = 0; ret = drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D0); - if (ret != 1) + if (ret != 1) { dev_err(dp->dev, "Failed to set DP Power0 %d\n", ret); + return ret; + } return analogix_dp_send_psr_spd(dp, &psr_vsc, false); } diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 3e8bf79bea58..8c884f9ce713 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -77,13 +77,13 @@ struct rockchip_dp_device { struct analogix_dp_plat_data plat_data; }; -static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) +static int analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) { struct rockchip_dp_device *dp = to_dp(encoder); int ret; if (!analogix_dp_psr_enabled(dp->adp)) - return; + return 0; DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit"); @@ -91,13 +91,13 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) PSR_WAIT_LINE_FLAG_TIMEOUT_MS); if (ret) { DRM_DEV_ERROR(dp->dev, "line flag interrupt did not arrive\n"); - return; + return -ETIMEDOUT; } if (enabled) - analogix_dp_enable_psr(dp->adp); + return analogix_dp_enable_psr(dp->adp); else - analogix_dp_disable_psr(dp->adp); + return analogix_dp_disable_psr(dp->adp); } static int rockchip_dp_pre_init(struct rockchip_dp_device *dp) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c index b339ca943139..9376f4396b6b 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c @@ -36,7 +36,7 @@ struct psr_drv { struct delayed_work flush_work; - void (*set)(struct drm_encoder *encoder, bool enable); + int (*set)(struct drm_encoder *encoder, bool enable); }; static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc) @@ -93,19 +93,25 @@ static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state) return; } - psr->state = state; - /* Actually commit the state change to hardware */ - switch (psr->state) { + switch (state) { case PSR_ENABLE: - psr->set(psr->encoder, true); + if (psr->set(psr->encoder, true)) + return; break; case PSR_DISABLE: case PSR_FLUSH: - psr->set(psr->encoder, false); + if (psr->set(psr->encoder, false)) + return; break; + + default: + pr_err("%s: Unknown state %d\n", __func__, state); + return; } + + psr->state = state; } static void psr_set_state(struct psr_drv *psr, enum psr_state state) @@ -229,7 +235,7 @@ EXPORT_SYMBOL(rockchip_drm_psr_flush_all); * Zero on success, negative errno on failure. */ int rockchip_drm_psr_register(struct drm_encoder *encoder, - void (*psr_set)(struct drm_encoder *, bool enable)) + int (*psr_set)(struct drm_encoder *, bool enable)) { struct rockchip_drm_private *drm_drv = encoder->dev->dev_private; struct psr_drv *psr; diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h index b1ea0155e57c..06537ee27565 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h @@ -22,7 +22,7 @@ int rockchip_drm_psr_activate(struct drm_encoder *encoder); int rockchip_drm_psr_deactivate(struct drm_encoder *encoder); int rockchip_drm_psr_register(struct drm_encoder *encoder, - void (*psr_set)(struct drm_encoder *, bool enable)); + int (*psr_set)(struct drm_encoder *, bool enable)); void rockchip_drm_psr_unregister(struct drm_encoder *encoder); #endif /* __ROCKCHIP_DRM_PSR__ */