Message-ID: <rdisefwdbkqe.fsf@hawkmoon.pdx.corp.google.com>
Date:   Thu, 27 Apr 2017 14:31:53 -0700
From:   "Kristian H. Kristensen" <krh@...planet.net>
To:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-kernel@...r.kernel.org
Cc:     dbasehore@...omium.org, Jeffy Chen <jeffy.chen@...k-chips.com>,
        dianders@...omium.org, dri-devel@...ts.freedesktop.org,
        tfiga@...omium.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] drm/rockchip: Set line flag config register in vop_crtc_enable

Jeffy Chen <jeffy.chen@...k-chips.com> writes:

> We need to set vop config done after update line flag config, it's a
> new requirement for chips newer than rk3368.
>
> Since we would only use line flag irq for vact_end, let's move it to
> vop_crtc_enable.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
>
> ---
>
>  drivers/gpu/drm/rockchip/analogix_dp-rockchip.c |  4 ++--
>  drivers/gpu/drm/rockchip/rockchip_drm_drv.h     |  3 +--
>  drivers/gpu/drm/rockchip/rockchip_drm_vop.c     | 20 +++++++++-----------
>  3 files changed, 12 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index d8fa7a9..9bfdbc6 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -115,8 +115,8 @@ static void analogix_dp_psr_work(struct work_struct *work)
>  
>  	vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;

We don't need vact_end anymore here.

Kristian

> -	ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
> -					  PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
> +	ret = rockchip_drm_wait_vact_end(dp->encoder.crtc,
> +					 PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
>  	if (ret) {
>  		dev_err(dp->dev, "line flag interrupt did not arrive\n");
>  		return;
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> index a48fcce..47905fa 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
> @@ -62,8 +62,7 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
>  				   struct device *dev);
>  void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
>  				    struct device *dev);
> -int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
> -				unsigned int mstimeout);
> +int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout);
>  
>  extern struct platform_driver cdn_dp_driver;
>  extern struct platform_driver dw_hdmi_rockchip_pltfm_driver;
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 3f7a82d..40a5e6e 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -468,7 +468,7 @@ static bool vop_line_flag_irq_is_enabled(struct vop *vop)
>  	return !!line_flag_irq;
>  }
>  
> -static void vop_line_flag_irq_enable(struct vop *vop, int line_num)
> +static void vop_line_flag_irq_enable(struct vop *vop)
>  {
>  	unsigned long flags;
>  
> @@ -477,7 +477,6 @@ static void vop_line_flag_irq_enable(struct vop *vop, int line_num)
>  
>  	spin_lock_irqsave(&vop->irq_lock, flags);
>  
> -	VOP_CTRL_SET(vop, line_flag_num[0], line_num);
>  	VOP_INTR_SET_TYPE(vop, clear, LINE_FLAG_INTR, 1);
>  	VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 1);
>  
> @@ -981,6 +980,8 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
>  	VOP_CTRL_SET(vop, vact_st_end, val);
>  	VOP_CTRL_SET(vop, vpost_st_end, val);
>  
> +	VOP_CTRL_SET(vop, line_flag_num[0], vact_end);
> +
>  	clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
>  
>  	VOP_CTRL_SET(vop, standby, 0);
> @@ -1507,19 +1508,16 @@ static void vop_win_init(struct vop *vop)
>  }
>  
>  /**
> - * rockchip_drm_wait_line_flag - acqiure the give line flag event
> + * rockchip_drm_wait_vact_end
>   * @crtc: CRTC to enable line flag
> - * @line_num: interested line number
>   * @mstimeout: millisecond for timeout
>   *
> - * Driver would hold here until the interested line flag interrupt have
> - * happened or timeout to wait.
> + * Wait for vact_end line flag irq or timeout.
>   *
>   * Returns:
>   * Zero on success, negative errno on failure.
>   */
> -int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
> -				unsigned int mstimeout)
> +int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout)
>  {
>  	struct vop *vop = to_vop(crtc);
>  	unsigned long jiffies_left;
> @@ -1527,14 +1525,14 @@ int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
>  	if (!crtc || !vop->is_enabled)
>  		return -ENODEV;
>  
> -	if (line_num > crtc->mode.vtotal || mstimeout <= 0)
> +	if (mstimeout <= 0)
>  		return -EINVAL;
>  
>  	if (vop_line_flag_irq_is_enabled(vop))
>  		return -EBUSY;
>  
>  	reinit_completion(&vop->line_flag_completion);
> -	vop_line_flag_irq_enable(vop, line_num);
> +	vop_line_flag_irq_enable(vop);
>  
>  	jiffies_left = wait_for_completion_timeout(&vop->line_flag_completion,
>  						   msecs_to_jiffies(mstimeout));
> @@ -1547,7 +1545,7 @@ int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
>  
>  	return 0;
>  }
> -EXPORT_SYMBOL(rockchip_drm_wait_line_flag);
> +EXPORT_SYMBOL(rockchip_drm_wait_vact_end);
>  
>  static int vop_bind(struct device *dev, struct device *master, void *data)
>  {
> -- 
> 2.1.4
>
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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