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Message-ID: <6139998.4vTCxPXJkl@jernej-laptop>
Date: Tue, 31 Dec 2019 13:06:03 +0100
From: Jernej Škrabec <jernej.skrabec@...l.net>
To: mripard@...nel.org, dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
roman.stratiienko@...ballogic.com
Cc: Roman Stratiienko <roman.stratiienko@...ballogic.com>
Subject: Re: [PATCH v2 3/4] drm/sun4i: Use CRTC size instead of PRIMARY plane size as mixer frame.
Hi!
Sorry that I missed few details in first review. Please take a look below.
Dne nedelja, 29. december 2019 ob 17:28:27 CET je
roman.stratiienko@...ballogic.com napisal(a):
> From: Roman Stratiienko <roman.stratiienko@...ballogic.com>
>
> According to DRM documentation the only difference between PRIMARY
> and OVERLAY plane is that each CRTC must have PRIMARY plane and
> OVERLAY are optional.
>
> Allow PRIMARY plane to have dimension different from full-screen.
>
> Fixes: 90212fffa4fc ("drm/sun4i: Use values calculated by atomic check")
This fixes tag doesn't seem to be a good choice. First time where code in
question was introduced was:
9d75b8c0b999 drm/sun4i: add support for Allwinner DE2 mixers
and it was later moved to sun8i_ui_layer.c in:
5bb5f5dafa1a drm/sun4i: Reorganize UI layer code in DE2
Not sure which one is better. You can also include both.
> Signed-off-by: Roman Stratiienko <roman.stratiienko@...ballogic.com>
> ---
> v2:
> - Split commit in 2 parts
> - Add Fixes line to the commit message
> ---
> drivers/gpu/drm/sun4i/sun8i_mixer.c | 35 ++++++++++++++++++++++++++
> drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 30 ----------------------
> 2 files changed, 35 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> b/drivers/gpu/drm/sun4i/sun8i_mixer.c index d306ad5dc093..5d90a95ff855
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
> @@ -257,6 +257,40 @@ const struct de2_fmt_info *sun8i_mixer_format_info(u32
> format) return NULL;
> }
>
> +static void sun8i_mode_set(struct sunxi_engine *engine,
> + struct drm_display_mode *mode)
> +{
> + u32 dst_w = mode->crtc_hdisplay;
> + u32 dst_h = mode->crtc_vdisplay;
Now that you moved code in separate function, "dst_" prefix doesn't make sense
anymore. Plain "width" and "height" work just fine.
> + u32 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
> + bool interlaced = false;
No need to initialize above variable. This value is never used.
> + u32 val;
> + struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
> + u32 bld_base = sun8i_blender_base(mixer);
Not extremely important, but can you move above two lines to the top? At least
I prefer to have those lines sorted from longest to shortest as much as
possible.
Once above comments are addressed, code is:
Reviewed-by: Jernej Skrabec <jernej.skrabec@...l.net>
Best regards,
Jernej
> +
> + DRM_DEBUG_DRIVER("Mode change, updating global size W: %u H: %u\n",
> + dst_w, dst_h);
> + regmap_write(mixer->engine.regs,
> + SUN8I_MIXER_GLOBAL_SIZE,
> + outsize);
> + regmap_write(mixer->engine.regs,
> + SUN8I_MIXER_BLEND_OUTSIZE(bld_base), outsize);
> +
> + interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
> +
> + if (interlaced)
> + val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
> + else
> + val = 0;
> +
> + regmap_update_bits(mixer->engine.regs,
> + SUN8I_MIXER_BLEND_OUTCTL(bld_base),
> + SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
> + val);
> + DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n",
> + interlaced ? "on" : "off");
> +}
> +
> static void sun8i_mixer_commit(struct sunxi_engine *engine)
> {
> struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
> @@ -356,6 +390,7 @@ static struct drm_plane **sun8i_layers_init(struct
> drm_device *drm, static const struct sunxi_engine_ops sun8i_engine_ops = {
> .commit = sun8i_mixer_commit,
> .layers_init = sun8i_layers_init,
> + .mode_set = sun8i_mode_set,
> };
>
> static struct regmap_config sun8i_mixer_regmap_config = {
> diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c index ee7c13d8710f..23c2f4b68c89
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> @@ -72,36 +72,6 @@ static int sun8i_ui_layer_update_coord(struct sun8i_mixer
> *mixer, int channel, insize = SUN8I_MIXER_SIZE(src_w, src_h);
> outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
>
> - if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
> - bool interlaced = false;
> - u32 val;
> -
> - DRM_DEBUG_DRIVER("Primary layer, updating global size
W: %u H: %u\n",
> - dst_w, dst_h);
> - regmap_write(mixer->engine.regs,
> - SUN8I_MIXER_GLOBAL_SIZE,
> - outsize);
> - regmap_write(mixer->engine.regs,
> - SUN8I_MIXER_BLEND_OUTSIZE(bld_base),
outsize);
> -
> - if (state->crtc)
> - interlaced = state->crtc->state-
>adjusted_mode.flags
> - & DRM_MODE_FLAG_INTERLACE;
> -
> - if (interlaced)
> - val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
> - else
> - val = 0;
> -
> - regmap_update_bits(mixer->engine.regs,
> -
SUN8I_MIXER_BLEND_OUTCTL(bld_base),
> -
SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
> - val);
> -
> - DRM_DEBUG_DRIVER("Switching display mixer interlaced
mode %s\n",
> - interlaced ? "on" : "off");
> - }
> -
> /* Set height and width */
> DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
> state->src.x1 >> 16, state->src.y1 >> 16);
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