From: Stefan Agner <stefan@agner.ch>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Marek Vasut <marex@denx.de>,
kernel@pengutronix.de, dri-devel@lists.freedesktop.org,
linux-imx@nxp.com
Subject: Re: [PATCH 12/21] drm: mxsfb: Move vblank event arm to CRTC .atomic_flush()
Date: Mon, 23 Mar 2020 23:38:41 +0100 [thread overview]
Message-ID: <ae03781156d1091bf234003a960c3cd5@agner.ch> (raw)
In-Reply-To: <20200309195216.31042-13-laurent.pinchart@ideasonboard.com>
On 2020-03-09 20:52, Laurent Pinchart wrote:
> The vblank event is armed in the plane .atomic_update(). This works fine
> as we have a single plane, but will break as soon as multiple planes are
> supported (not to mention it's logically the wrong place to perform the
> operation). Move it to CRTC .atomic_flush().
The comment in the bracket make it sound as if there was something wrong
with the code before, but from what I understand that was just fine and
the only option we had with drm_simple_kms_helper, correct? Can you
maybe make that a bit clearer? (e.g. by stating that now that we no
longer use the simple display pipeline we can and should use the flush
callback).
Otherwise looks good.
Reviewed-by: Stefan Agner <stefan@agner.ch>
--
Stefan
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
> drivers/gpu/drm/mxsfb/mxsfb_kms.c | 35 ++++++++++++++++++-------------
> 1 file changed, 20 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
> b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
> index 8f339adb8d04..ebe0785694cb 100644
> --- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
> +++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
> @@ -295,6 +295,25 @@ static int mxsfb_crtc_atomic_check(struct drm_crtc *crtc,
> return drm_atomic_add_affected_planes(state->state, crtc);
> }
>
> +static void mxsfb_crtc_atomic_flush(struct drm_crtc *crtc,
> + struct drm_crtc_state *old_state)
> +{
> + struct drm_pending_vblank_event *event;
> +
> + event = crtc->state->event;
> + crtc->state->event = NULL;
> +
> + if (!event)
> + return;
> +
> + spin_lock_irq(&crtc->dev->event_lock);
> + if (drm_crtc_vblank_get(crtc) == 0)
> + drm_crtc_arm_vblank_event(crtc, event);
> + else
> + drm_crtc_send_vblank_event(crtc, event);
> + spin_unlock_irq(&crtc->dev->event_lock);
> +}
> +
> static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
> struct drm_crtc_state *old_state)
> {
> @@ -364,6 +383,7 @@ static void mxsfb_crtc_disable_vblank(struct drm_crtc *crtc)
>
> static const struct drm_crtc_helper_funcs mxsfb_crtc_helper_funcs = {
> .atomic_check = mxsfb_crtc_atomic_check,
> + .atomic_flush = mxsfb_crtc_atomic_flush,
> .atomic_enable = mxsfb_crtc_atomic_enable,
> .atomic_disable = mxsfb_crtc_atomic_disable,
> };
> @@ -410,23 +430,8 @@ static void mxsfb_plane_atomic_update(struct
> drm_plane *plane,
> struct drm_plane_state *old_pstate)
> {
> struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(plane->dev);
> - struct drm_crtc *crtc = &mxsfb->crtc;
> - struct drm_pending_vblank_event *event;
> dma_addr_t paddr;
>
> - spin_lock_irq(&crtc->dev->event_lock);
> - event = crtc->state->event;
> - if (event) {
> - crtc->state->event = NULL;
> -
> - if (drm_crtc_vblank_get(crtc) == 0) {
> - drm_crtc_arm_vblank_event(crtc, event);
> - } else {
> - drm_crtc_send_vblank_event(crtc, event);
> - }
> - }
> - spin_unlock_irq(&crtc->dev->event_lock);
> -
> paddr = mxsfb_get_fb_paddr(mxsfb);
> if (paddr) {
> mxsfb_enable_axi_clk(mxsfb);
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-03-23 22:38 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 19:51 [PATCH 00/21] drm: mxsfb: Add i.MX7 support Laurent Pinchart
2020-03-09 19:51 ` [PATCH 01/21] drm: mxsfb: Remove fbdev leftovers Laurent Pinchart
2020-03-23 20:23 ` Stefan Agner
2020-03-09 19:51 ` [PATCH 02/21] drm: mxsfb: Use drm_panel_bridge Laurent Pinchart
2020-03-23 21:27 ` Stefan Agner
2020-03-23 21:38 ` Sam Ravnborg
2020-03-23 23:50 ` Stefan Agner
2020-05-30 2:14 ` Laurent Pinchart
2020-06-02 13:12 ` Daniel Vetter
2020-06-02 14:34 ` Stefan Agner
2020-06-02 17:18 ` Laurent Pinchart
2020-06-02 17:13 ` Laurent Pinchart
2020-06-03 8:16 ` Daniel Vetter
2020-06-04 20:10 ` Sam Ravnborg
2020-03-09 19:51 ` [PATCH 03/21] drm: mxsfb: Use BIT() macro to define register bitfields Laurent Pinchart
2020-03-23 21:34 ` Stefan Agner
2020-03-09 19:51 ` [PATCH 04/21] drm: mxsfb: Remove unused macros from mxsfb_regs.h Laurent Pinchart
2020-03-23 21:36 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 05/21] drm: mxsfb: Clarify format and bus width configuration Laurent Pinchart
2020-03-23 21:42 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 06/21] drm: mxsfb: Pass mxsfb_drm_private pointer to mxsfb_reset_block() Laurent Pinchart
2020-03-23 21:43 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 07/21] drm: mxsfb: Use LCDC_CTRL register name explicitly Laurent Pinchart
2020-03-23 21:48 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 08/21] drm: mxsfb: Remove register definitions from mxsfb_crtc.c Laurent Pinchart
2020-03-23 21:49 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 09/21] drm: mxsfb: Remove unneeded includes Laurent Pinchart
2020-03-23 21:53 ` Stefan Agner
2020-05-30 0:33 ` Laurent Pinchart
2020-03-09 19:52 ` [PATCH 10/21] drm: mxsfb: Stop using DRM simple display pipeline helper Laurent Pinchart
2020-03-23 22:30 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 11/21] drm: mxsfb: Rename mxsfb_crtc.c to mxsfb_kms.c Laurent Pinchart
2020-03-23 22:31 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 12/21] drm: mxsfb: Move vblank event arm to CRTC .atomic_flush() Laurent Pinchart
2020-03-23 22:38 ` Stefan Agner [this message]
2020-03-09 19:52 ` [PATCH 13/21] drm: mxsfb: Don't touch AXI clock in IRQ context Laurent Pinchart
2020-03-23 22:50 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 14/21] drm: mxsfb: Enable vblank handling Laurent Pinchart
2020-03-23 23:08 ` Stefan Agner
2020-03-24 10:37 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 15/21] drm: mxsfb: Remove mxsfb_devdata unused fields Laurent Pinchart
2020-03-23 23:15 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 16/21] drm: mxsfb: Add i.MX7 to the list of supported SoCs in Kconfig Laurent Pinchart
2020-03-10 16:28 ` Fabio Estevam
2020-03-10 16:32 ` Laurent Pinchart
2020-03-10 16:37 ` [PATCH v1.1 " Laurent Pinchart
2020-03-23 23:18 ` [PATCH " Stefan Agner
2020-03-09 19:52 ` [PATCH 17/21] drm: mxsfb: Update internal IP version number for i.MX6SX Laurent Pinchart
2020-03-23 23:20 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 18/21] drm: mxsfb: Drop non-OF support Laurent Pinchart
2020-03-23 23:23 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 19/21] drm: mxsfb: Turn mxsfb_set_pixel_fmt() into a void function Laurent Pinchart
2020-03-23 23:28 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 20/21] drm: mxsfb: Merge mxsfb_set_pixel_fmt() and mxsfb_set_bus_fmt() Laurent Pinchart
2020-03-23 23:34 ` Stefan Agner
2020-03-09 19:52 ` [PATCH 21/21] drm: mxsfb: Support the alpha plane Laurent Pinchart
2020-03-23 23:48 ` Stefan Agner
2020-05-30 2:44 ` Laurent Pinchart
2020-03-19 9:36 ` [PATCH 00/21] drm: mxsfb: Add i.MX7 support Laurent Pinchart
2020-04-12 16:37 ` Guido Günther
2020-05-26 15:13 ` Stefan Agner
2020-05-30 0:29 ` Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ae03781156d1091bf234003a960c3cd5@agner.ch \
--to=stefan@agner.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=kernel@pengutronix.de \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-imx@nxp.com \
--cc=marex@denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).