Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967549AbeAORYo (ORCPT + 1 other); Mon, 15 Jan 2018 12:24:44 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:57524 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966845AbeAORRL (ORCPT ); Mon, 15 Jan 2018 12:17:11 -0500 From: Thierry Escande To: Archit Taneja , Inki Dae , Thierry Reding , Sandy Huang , Sean Paul , David Airlie Cc: Tomasz Figa , Haixia Shi , =?UTF-8?q?=C3=98rjan=20Eide?= , zain wang , Yakir Yang , Lin Huang , Douglas Anderson , Mark Yao , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org Subject: [PATCH 25/40] drm/rockchip: Restore psr->state when enable/disable psr failed Date: Mon, 15 Jan 2018 18:15:59 +0100 Message-Id: <20180115171614.14474-26-thierry.escande@collabora.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180115171614.14474-1-thierry.escande@collabora.com> References: <20180115171614.14474-1-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset = "utf-8" Content-Transfert-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: 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 --- 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 501f7b4a23d6..b2e369073854 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__ */ -- 2.14.1