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Message-ID: <20170428150317.tpnj6obddfz5dzng@art_vandelay>
Date: Fri, 28 Apr 2017 11:03:17 -0400
From: Sean Paul <seanpaul@...omium.org>
To: Jeffy Chen <jeffy.chen@...k-chips.com>
Cc: linux-kernel@...r.kernel.org, dbasehore@...omium.org,
dianders@...omium.org, tfiga@...omium.org, seanpaul@...omium.org,
hoegsberg@...omium.org, mark.yao@...k-chips.com,
Heiko Stuebner <heiko@...ech.de>,
dri-devel@...ts.freedesktop.org,
linux-rockchip@...ts.infradead.org,
David Airlie <airlied@...ux.ie>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] drm/rockchip: Set line flag config register in
vop_crtc_enable
On Fri, Apr 28, 2017 at 03:37:47PM +0800, Jeffy Chen wrote:
> 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.
>
> v2: Remove unused check and variables.
Hi Jeffy,
v1 was already applied. Please send a follow-on patch to clean this up.
Sean
>
> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
>
> ---
>
> Changes in v2:
> Remove unused check and variables.
>
> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 14 +++-----------
> drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 3 +--
> drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 20 +++++++++-----------
> 3 files changed, 13 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index d8fa7a9..1bccd82 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -104,26 +104,18 @@ static void analogix_dp_psr_work(struct work_struct *work)
> {
> struct rockchip_dp_device *dp =
> container_of(work, typeof(*dp), psr_work);
> - struct drm_crtc *crtc = dp->encoder.crtc;
> - int psr_state = dp->psr_state;
> - int vact_end;
> int ret;
> unsigned long flags;
>
> - if (!crtc)
> - return;
> -
> - vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
> -
> - 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;
> }
>
> spin_lock_irqsave(&dp->psr_lock, flags);
> - if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
> + if (dp->psr_state == EDP_VSC_PSR_STATE_ACTIVE)
> analogix_dp_enable_psr(dp->dev);
> else
> analogix_dp_disable_psr(dp->dev);
> 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
>
--
Sean Paul, Software Engineer, Google / Chromium OS
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