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From: Andrzej Hajda <a.hajda@samsung.com>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>,
	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
Cc: dri-devel@lists.freedesktop.org, dianders@chromium.org,
	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, linux-kernel@vger.kernel.org,
	kyungmin.park@samsung.com, Laurent.pinchart@ideasonboard.com,
	kuankuan.y@gmail.com, hshi@chromium.org
Subject: Re: [PATCH v6 25/30] drm/rockchip: Cancel PSR enable work before changing the state
Date: Mon, 16 Apr 2018 10:55:33 +0200	[thread overview]
Message-ID: <39f15f1d-c984-d328-4d1f-dc115f71b98f@samsung.com> (raw)
In-Reply-To: <20180405095000.9756-26-enric.balletbo@collabora.com>

On 05.04.2018 11:49, Enric Balletbo i Serra wrote:
> From: Tomasz Figa <tfiga@chromium.org>
>
> If we change the state first and reschedule later, we might have the
> work executed according to previous scheduled time and end up with PSR
> re-enabled instantly. Let's cancel the work before changing the state.
>
> While at it, consolidate psr_disable_handler() to just call
> rockchip_drm_do_flush(), as they are both supposed to do the same.
>
> Signed-off-by: Tomasz Figa <tfiga@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>
>  drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 20 ++++++++------------
>  1 file changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> index a107845ba97c..c8655e625ba2 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> @@ -138,18 +138,6 @@ static void psr_flush_handler(struct work_struct *work)
>  	mutex_unlock(&psr->lock);
>  }
>  
> -static void psr_disable_handler(struct work_struct *work)
> -{
> -	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> -
> -	/* If the state has changed since we initiated the flush, do nothing */
> -	mutex_lock(&psr->lock);
> -	if (psr->state == PSR_ENABLE)
> -		psr_set_state_locked(psr, PSR_FLUSH);
> -	mutex_unlock(&psr->lock);
> -	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);
> -}
> -
>  /**
>   * rockchip_drm_psr_activate - activate PSR on the given pipe
>   * @encoder: encoder to obtain the PSR encoder
> @@ -198,6 +186,7 @@ EXPORT_SYMBOL(rockchip_drm_psr_deactivate);
>  
>  static void rockchip_drm_do_flush(struct psr_drv *psr)
>  {
> +	cancel_delayed_work_sync(&psr->flush_work);
>  	psr_set_state(psr, PSR_FLUSH);
>  	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);

I guess you can change it to schedule_delayed_work then.

Anyway:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

 --
Regards
Andrzej


>  }
> @@ -244,6 +233,13 @@ void rockchip_drm_psr_flush_all(struct drm_device *dev)
>  }
>  EXPORT_SYMBOL(rockchip_drm_psr_flush_all);
>  
> +static void psr_disable_handler(struct work_struct *work)
> +{
> +	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> +
> +	rockchip_drm_do_flush(psr);
> +}
> +
>  static void psr_input_event(struct input_handle *handle,
>  			    unsigned int type, unsigned int code,
>  			    int value)

WARNING: multiple messages have this Message-ID
From: Andrzej Hajda <a.hajda@samsung.com>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>,
	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
Cc: dri-devel@lists.freedesktop.org, dianders@chromium.org,
	Laurent.pinchart@ideasonboard.com, ykk@rock-chips.com,
	kernel@collabora.com, m.szyprowski@samsung.com,
	linux-samsung-soc@vger.kernel.org, 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,
	linux-kernel@vger.kernel.org, kyungmin.park@samsung.com,
	kuankuan.y@gmail.com, hshi@chromium.org
Subject: Re: [PATCH v6 25/30] drm/rockchip: Cancel PSR enable work before changing the state
Date: Mon, 16 Apr 2018 10:55:33 +0200	[thread overview]
Message-ID: <39f15f1d-c984-d328-4d1f-dc115f71b98f@samsung.com> (raw)
In-Reply-To: <20180405095000.9756-26-enric.balletbo@collabora.com>

On 05.04.2018 11:49, Enric Balletbo i Serra wrote:
> From: Tomasz Figa <tfiga@chromium.org>
>
> If we change the state first and reschedule later, we might have the
> work executed according to previous scheduled time and end up with PSR
> re-enabled instantly. Let's cancel the work before changing the state.
>
> While at it, consolidate psr_disable_handler() to just call
> rockchip_drm_do_flush(), as they are both supposed to do the same.
>
> Signed-off-by: Tomasz Figa <tfiga@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>
>  drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 20 ++++++++------------
>  1 file changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> index a107845ba97c..c8655e625ba2 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> @@ -138,18 +138,6 @@ static void psr_flush_handler(struct work_struct *work)
>  	mutex_unlock(&psr->lock);
>  }
>  
> -static void psr_disable_handler(struct work_struct *work)
> -{
> -	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> -
> -	/* If the state has changed since we initiated the flush, do nothing */
> -	mutex_lock(&psr->lock);
> -	if (psr->state == PSR_ENABLE)
> -		psr_set_state_locked(psr, PSR_FLUSH);
> -	mutex_unlock(&psr->lock);
> -	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);
> -}
> -
>  /**
>   * rockchip_drm_psr_activate - activate PSR on the given pipe
>   * @encoder: encoder to obtain the PSR encoder
> @@ -198,6 +186,7 @@ EXPORT_SYMBOL(rockchip_drm_psr_deactivate);
>  
>  static void rockchip_drm_do_flush(struct psr_drv *psr)
>  {
> +	cancel_delayed_work_sync(&psr->flush_work);
>  	psr_set_state(psr, PSR_FLUSH);
>  	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);

I guess you can change it to schedule_delayed_work then.

Anyway:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

 --
Regards
Andrzej


>  }
> @@ -244,6 +233,13 @@ void rockchip_drm_psr_flush_all(struct drm_device *dev)
>  }
>  EXPORT_SYMBOL(rockchip_drm_psr_flush_all);
>  
> +static void psr_disable_handler(struct work_struct *work)
> +{
> +	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> +
> +	rockchip_drm_do_flush(psr);
> +}
> +
>  static void psr_input_event(struct input_handle *handle,
>  			    unsigned int type, unsigned int code,
>  			    int value)


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WARNING: multiple messages have this Message-ID
From: a.hajda@samsung.com (Andrzej Hajda)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 25/30] drm/rockchip: Cancel PSR enable work before changing the state
Date: Mon, 16 Apr 2018 10:55:33 +0200	[thread overview]
Message-ID: <39f15f1d-c984-d328-4d1f-dc115f71b98f@samsung.com> (raw)
In-Reply-To: <20180405095000.9756-26-enric.balletbo@collabora.com>

On 05.04.2018 11:49, Enric Balletbo i Serra wrote:
> From: Tomasz Figa <tfiga@chromium.org>
>
> If we change the state first and reschedule later, we might have the
> work executed according to previous scheduled time and end up with PSR
> re-enabled instantly. Let's cancel the work before changing the state.
>
> While at it, consolidate psr_disable_handler() to just call
> rockchip_drm_do_flush(), as they are both supposed to do the same.
>
> Signed-off-by: Tomasz Figa <tfiga@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>
>  drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 20 ++++++++------------
>  1 file changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> index a107845ba97c..c8655e625ba2 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
> @@ -138,18 +138,6 @@ static void psr_flush_handler(struct work_struct *work)
>  	mutex_unlock(&psr->lock);
>  }
>  
> -static void psr_disable_handler(struct work_struct *work)
> -{
> -	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> -
> -	/* If the state has changed since we initiated the flush, do nothing */
> -	mutex_lock(&psr->lock);
> -	if (psr->state == PSR_ENABLE)
> -		psr_set_state_locked(psr, PSR_FLUSH);
> -	mutex_unlock(&psr->lock);
> -	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);
> -}
> -
>  /**
>   * rockchip_drm_psr_activate - activate PSR on the given pipe
>   * @encoder: encoder to obtain the PSR encoder
> @@ -198,6 +186,7 @@ EXPORT_SYMBOL(rockchip_drm_psr_deactivate);
>  
>  static void rockchip_drm_do_flush(struct psr_drv *psr)
>  {
> +	cancel_delayed_work_sync(&psr->flush_work);
>  	psr_set_state(psr, PSR_FLUSH);
>  	mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);

I guess you can change it to schedule_delayed_work then.

Anyway:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

?--
Regards
Andrzej


>  }
> @@ -244,6 +233,13 @@ void rockchip_drm_psr_flush_all(struct drm_device *dev)
>  }
>  EXPORT_SYMBOL(rockchip_drm_psr_flush_all);
>  
> +static void psr_disable_handler(struct work_struct *work)
> +{
> +	struct psr_drv *psr = container_of(work, struct psr_drv, disable_work);
> +
> +	rockchip_drm_do_flush(psr);
> +}
> +
>  static void psr_input_event(struct input_handle *handle,
>  			    unsigned int type, unsigned int code,
>  			    int value)

  reply	other threads:[~2018-04-16  8:55 UTC|newest]

Thread overview: 123+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-05  9:49 [PATCH v6 00/30] DRM Rockchip rk3399 (Kevin) Enric Balletbo i Serra
2018-04-05  9:49 ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 01/30] drm/bridge: analogix_dp: Move enable video into config_video() Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:37   ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 02/30] drm/bridge: analogix_dp: Check AUX_EN status when doing AUX transfer Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 03/30] drm/bridge: analogix_dp: Don't use fast link training when panel just powered up Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 04/30] drm/bridge: analogix_dp: Retry bridge enable when it failed Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 05/30] drm/bridge: analogix_dp: Wait for HPD signal before configuring link Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:37   ` Sasha Levin
2018-04-09  3:37     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 06/30] drm/bridge: analogix_dp: Set PD_INC_BG first when powering up edp phy Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 07/30] drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 08/30] drm/bridge: analogix_dp: Extend hpd check time to 100ms Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 09/30] drm/bridge: analogix_dp: Fix incorrect usage of enhanced mode Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 10/30] drm/bridge: analogix_dp: Check dpcd write/read status Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 11/30] drm/bridge: analogix_dp: Fix AUX_PD bit for Rockchip Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 12/30] drm/bridge: analogix_dp: Reset aux channel if an error occurred Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 13/30] drm/rockchip: Restore psr->state when enable/disable psr failed Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 14/30] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 15/30] drm/bridge: analogix_dp: Fix timeout of video streamclk config Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 16/30] drm/bridge: analogix_dp: Fix incorrect operations with register ANALOGIX_DP_FUNC_EN_1 Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 17/30] drm/bridge: analogix_dp: Move fast link training detect to set_bridge Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 18/30] drm/bridge: analogix_dp: Reorder plat_data->power_off to happen sooner Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 19/30] drm/bridge: analogix_dp: Properly log AUX CH errors Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 20/30] drm/bridge: analogix_dp: Properly disable aux chan retries on rockchip Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 21/30] drm/rockchip: pre dither down when output bpc is 8bit Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-05  9:49 ` [PATCH v6 22/30] drm/bridge: analogix_dp: Split the platform-specific poweron in two parts Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 23/30] drm/rockchip: analogix_dp: Do not call Analogix code before bind Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-09  3:36   ` Sasha Levin
2018-04-09  3:36     ` Sasha Levin
2018-04-12  9:54   ` Andrzej Hajda
2018-04-12  9:54     ` Andrzej Hajda
2018-04-12  9:54     ` Andrzej Hajda
2018-04-05  9:49 ` [PATCH v6 24/30] drm/rockchip: Disable PSR on input events Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  7:19   ` Andrzej Hajda
2018-04-16  7:19     ` Andrzej Hajda
2018-04-16  7:19     ` Andrzej Hajda
2018-04-16 17:41     ` Dmitry Torokhov
2018-04-16 17:41       ` Dmitry Torokhov
2018-04-16 17:41       ` Dmitry Torokhov
2018-04-16 19:42   ` Ezequiel Garcia
2018-04-16 19:42     ` Ezequiel Garcia
2018-04-20 13:47   ` Andrzej Hajda
2018-04-20 13:47     ` Andrzej Hajda
2018-04-20 13:51     ` Enric Balletbo i Serra
2018-04-20 13:51       ` Enric Balletbo i Serra
2018-04-05  9:49 ` [PATCH v6 25/30] drm/rockchip: Cancel PSR enable work before changing the state Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  8:55   ` Andrzej Hajda [this message]
2018-04-16  8:55     ` Andrzej Hajda
2018-04-16  8:55     ` Andrzej Hajda
2018-04-05  9:49 ` [PATCH v6 26/30] drm/rockchip: psr: Avoid redundant calls to .set() callback Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  9:06   ` Andrzej Hajda
2018-04-16  9:06     ` Andrzej Hajda
2018-04-16  9:06     ` Andrzej Hajda
2018-04-05  9:49 ` [PATCH v6 27/30] drm/rockchip: psr: Sanitize semantics of allow/disallow API Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  9:26   ` Andrzej Hajda
2018-04-16  9:26     ` Andrzej Hajda
2018-04-16  9:26     ` Andrzej Hajda
2018-04-05  9:49 ` [PATCH v6 28/30] drm/rockchip: Disable PSR from reboot notifier Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  9:57   ` Andrzej Hajda
2018-04-16  9:57     ` Andrzej Hajda
2018-04-16  9:57     ` Andrzej Hajda
2018-04-16 13:12     ` Tomasz Figa
2018-04-16 13:12       ` Tomasz Figa
2018-04-16 13:12       ` Tomasz Figa
2018-04-18  9:18       ` Enric Balletbo Serra
2018-04-18  9:18         ` Enric Balletbo Serra
2018-04-18  9:18         ` Enric Balletbo Serra
2018-04-05  9:49 ` [PATCH v6 29/30] drm/rockchip: Disallow PSR for the whole atomic commit Enric Balletbo i Serra
2018-04-05  9:49   ` Enric Balletbo i Serra
2018-04-16  9:51   ` Andrzej Hajda
2018-04-16  9:51     ` Andrzej Hajda
2018-04-16  9:51     ` Andrzej Hajda
2018-04-05  9:50 ` [PATCH v6 30/30] drm/rockchip: psr: Remove flush by CRTC Enric Balletbo i Serra
2018-04-05  9:50   ` Enric Balletbo i Serra
2018-04-16  9:53   ` Andrzej Hajda
2018-04-16  9:53     ` Andrzej Hajda
2018-04-16  9:53     ` Andrzej Hajda

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