From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc: kieran.bingham+renesas@ideasonboard.com, geert@linux-m68k.org,
horms@verge.net.au, uli@fpond.eu, airlied@linux.ie,
daniel@ffwll.ch, koji.matsuoka.xm@renesas.com, muroya@ksk.co.jp,
VenkataRajesh.Kalakodima@in.bosch.com,
Harsha.ManjulaMallikarjun@in.bosch.com,
linux-renesas-soc@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 14/14] drm: rcar-du: Force CMM enablement when resuming
Date: Tue, 27 Aug 2019 03:05:17 +0300 [thread overview]
Message-ID: <20190827000517.GC5274@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20190825135154.11488-15-jacopo+renesas@jmondi.org>
Hi Jacopo,
(Question for Daniel below)
Thank you for the patch.
On Sun, Aug 25, 2019 at 03:51:54PM +0200, Jacopo Mondi wrote:
> When resuming from system suspend, the DU driver is responsible for
> reprogramming and enabling the CMM unit if it was in use at the time
> the system entered the suspend state.
>
> Force the color_mgmt_changed flag to true if any of the DRM color
> transformation properties was set in the CRTC state duplicated at
> suspend time, as the CMM gets reprogrammed only if said flag is active in
> the rcar_du_atomic_commit_update_cmm() method.
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> ---
> drivers/gpu/drm/rcar-du/rcar_du_drv.c | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index 018480a8f35c..6e38495fb78f 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -17,6 +17,7 @@
> #include <linux/slab.h>
> #include <linux/wait.h>
>
> +#include <drm/drm_atomic.h>
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_fb_cma_helper.h>
> #include <drm/drm_fb_helper.h>
> @@ -482,6 +483,26 @@ static int rcar_du_pm_suspend(struct device *dev)
> static int rcar_du_pm_resume(struct device *dev)
> {
> struct rcar_du_device *rcdu = dev_get_drvdata(dev);
> + struct drm_atomic_state *state = rcdu->ddev->mode_config.suspend_state;
> + unsigned int i;
> +
> + for (i = 0; i < rcdu->num_crtcs; ++i) {
> + struct drm_crtc *crtc = &rcdu->crtcs[i].crtc;
> + struct drm_crtc_state *crtc_state;
> +
> + crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
> + if (!crtc_state)
> + continue;
Shouldn't you get the new state here ?
> +
> + /*
> + * Force re-enablement of CMM after system resume if any
> + * of the DRM color transformation properties was set in
> + * the state saved at system suspend time.
> + */
> + if (crtc_state->gamma_lut || crtc_state->degamma_lut ||
> + crtc_state->ctm)
We don't support degamma_lut or crm, so I would drop those.
With these small issues addressed,
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Shouldn't we however squash this with the previous patch to avoid
bisection issues ?
> + crtc_state->color_mgmt_changed = true;
Daniel, is this something that would make sense in the KMS core (or
helpers) ?
> + }
>
> return drm_mode_config_helper_resume(rcdu->ddev);
> }
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2019-08-27 0:05 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-25 13:51 [PATCH v3 00/14] drm: rcar-du: Add Color Management Module (CMM) Jacopo Mondi
2019-08-25 13:51 ` [PATCH v3 01/14] dt-bindings: display: renesas,cmm: Add R-Car CMM documentation Jacopo Mondi
2019-08-26 7:34 ` Geert Uytterhoeven
2019-08-26 7:59 ` Jacopo Mondi
2019-08-26 8:38 ` Geert Uytterhoeven
2019-08-26 10:15 ` Laurent Pinchart
2019-08-30 18:01 ` Jacopo Mondi
2019-09-05 11:50 ` Laurent Pinchart
2019-09-05 12:05 ` Geert Uytterhoeven
2019-09-05 12:20 ` Laurent Pinchart
2019-09-05 13:28 ` Jacopo Mondi
2019-08-25 13:51 ` [PATCH v3 02/14] dt-bindings: display, renesas,du: Document cmms property Jacopo Mondi
2019-08-27 20:29 ` Rob Herring
2019-08-28 7:32 ` Geert Uytterhoeven
2019-08-28 8:28 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 03/14] arm64: dts: renesas: r8a7796: Add CMM units Jacopo Mondi
2019-08-26 7:28 ` Geert Uytterhoeven
2019-08-26 8:00 ` Jacopo Mondi
2019-08-26 22:43 ` Laurent Pinchart
2019-08-27 9:55 ` Jacopo Mondi
2019-08-27 10:12 ` Geert Uytterhoeven
2019-08-25 13:51 ` [PATCH v3 04/14] arm64: dts: renesas: r8a7795: " Jacopo Mondi
2019-08-26 22:45 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 05/14] arm64: dts: renesas: r8a77965: " Jacopo Mondi
2019-08-26 22:45 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 06/14] arm64: dts: renesas: r8a77990: " Jacopo Mondi
2019-08-26 22:47 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 07/14] arm64: dts: renesas: r8a77995: " Jacopo Mondi
2019-08-26 22:47 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 08/14] drm: rcar-du: Add support for CMM Jacopo Mondi
2019-08-26 7:31 ` Geert Uytterhoeven
2019-08-26 8:02 ` Jacopo Mondi
2019-08-27 0:24 ` Laurent Pinchart
2019-08-27 14:56 ` Jacopo Mondi
2019-08-27 15:48 ` Jacopo Mondi
2019-08-27 16:34 ` Laurent Pinchart
2019-09-05 9:57 ` Jacopo Mondi
2019-09-05 11:17 ` Laurent Pinchart
2019-09-05 13:14 ` Jacopo Mondi
2019-09-05 13:39 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 09/14] drm: rcar-du: Claim CMM support for Gen3 SoCs Jacopo Mondi
2019-08-25 13:51 ` [PATCH v3 10/14] drm: rcar-du: kms: Collect CMM instances Jacopo Mondi
2019-08-26 23:51 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 11/14] drm: rcar-du: crtc: Enable and disable CMMs Jacopo Mondi
2019-08-25 13:51 ` [PATCH v3 12/14] drm: rcar-du: crtc: Register GAMMA_LUT properties Jacopo Mondi
2019-08-25 13:51 ` [PATCH v3 13/14] drm: rcar-du: kms: Update CMM in atomic commit tail Jacopo Mondi
2019-08-27 0:00 ` Laurent Pinchart
2019-08-27 0:19 ` Laurent Pinchart
2019-08-27 14:44 ` Jacopo Mondi
2019-08-27 16:38 ` Laurent Pinchart
2019-08-25 13:51 ` [PATCH v3 14/14] drm: rcar-du: Force CMM enablement when resuming Jacopo Mondi
2019-08-27 0:05 ` Laurent Pinchart [this message]
2019-09-05 10:58 ` Jacopo Mondi
2019-09-05 11:25 ` Laurent Pinchart
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