linux-kernel - Re: [PATCH] drm/vc4: vec: Add support for PAL-60

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Message-ID: <20221018083153.okkqpd5ccfrnwdj3@houat>
Date:   Tue, 18 Oct 2022 10:31:53 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     kfyatek+publicgit@...il.com
Cc:     Karol Herbst <kherbst@...hat.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Lyude Paul <lyude@...hat.com>, Emma Anholt <emma@...olt.net>,
        Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Dom Cobley <dom@...pberrypi.com>, linux-sunxi@...ts.linux.dev,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        nouveau@...ts.freedesktop.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-arm-kernel@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org,
        Hans de Goede <hdegoede@...hat.com>,
        Phil Elwell <phil@...pberrypi.com>
Subject: Re: [PATCH] drm/vc4: vec: Add support for PAL-60

Hi,

On Sun, Oct 16, 2022 at 09:46:49PM +0200, Mateusz Kwiatkowski wrote:
> @@ -308,14 +324,15 @@ static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
>  };
>  
>  static inline const struct vc4_vec_tv_mode *
> -vc4_vec_tv_mode_lookup(unsigned int mode)
> +vc4_vec_tv_mode_lookup(unsigned int mode, u16 htotal)
>  {
>  	unsigned int i;
>  
>  	for (i = 0; i < ARRAY_SIZE(vc4_vec_tv_modes); i++) {
>  		const struct vc4_vec_tv_mode *tv_mode = &vc4_vec_tv_modes[i];
>  
> -		if (tv_mode->mode == mode)
> +		if (tv_mode->mode == mode &&
> +		    tv_mode->expected_htotal == htotal)
>  			return tv_mode;

Is there any reason we're not using the refresh rate to filter this? It
seems more natural to me.

Maxime

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