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Message-ID: <0255f7c6-0484-6456-350d-cf24f3fee5d6@tronnes.org>
Date:   Sat, 20 Aug 2022 19:22:48 +0200
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Subject: Re: [PATCH v1 23/35] drm/vc4: vec: Convert to the new TV mode
 property
To:     Maxime Ripard <maxime@cerno.tech>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Samuel Holland <samuel@sholland.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Daniel Vetter <daniel@ffwll.ch>, Emma Anholt <emma@anholt.net>,
        David Airlie <airlied@linux.ie>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Kevin Hilman <khilman@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Maxime Ripard <mripard@kernel.org>
Cc:     linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org,
        Phil Elwell <phil@raspberrypi.com>,
        Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>,
        linux-arm-kernel@lists.infradead.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        linux-amlogic@lists.infradead.org, dri-devel@lists.freedesktop.org,
        Dom Cobley <dom@raspberrypi.com>,
        =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= <noralf@tronnes.org>
References: <20220728-rpi-analog-tv-properties-v1-0-3d53ae722097@cerno.tech>
 <20220728-rpi-analog-tv-properties-v1-23-3d53ae722097@cerno.tech>
From:   =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= <noralf@tronnes.org>
In-Reply-To: <20220728-rpi-analog-tv-properties-v1-23-3d53ae722097@cerno.tech>
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Precedence: bulk


Den 29.07.2022 18.35, skrev Maxime Ripard:
> Now that the core can deal fine with analog TV modes, let's convert the vc4
> VEC driver to leverage those new features.
> 
> We've added some backward compatibility to support the old TV mode property
> and translate it into the new TV norm property.
> 
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c

>  static int vc4_vec_connector_get_modes(struct drm_connector *connector)
>  {
> -	struct drm_connector_state *state = connector->state;
>  	struct drm_display_mode *mode;
>  
> -	mode = drm_mode_duplicate(connector->dev,
> -				  vc4_vec_tv_modes[state->tv.mode].mode);
> +	mode = drm_mode_duplicate(connector->dev, &drm_mode_480i);
> +	if (!mode) {
> +		DRM_ERROR("Failed to create a new display mode\n");
> +		return -ENOMEM;
> +	}
> +
> +	drm_mode_probed_add(connector, mode);
> +
> +	mode = drm_mode_duplicate(connector->dev, &drm_mode_576i);

Maybe the mode that matches tv.norm should be marked as preferred so
userspace knows which one to pick?

Noralf.

>  	if (!mode) {
>  		DRM_ERROR("Failed to create a new display mode\n");
>  		return -ENOMEM;
> @@ -277,21 +313,95 @@ static int vc4_vec_connector_get_modes(struct drm_connector *connector)
>  	return 1;
>  }