From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD0F6C433F5 for ; Mon, 18 Oct 2021 17:41:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8F5E660F11 for ; Mon, 18 Oct 2021 17:41:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234174AbhJRRoF (ORCPT ); Mon, 18 Oct 2021 13:44:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234182AbhJRRnv (ORCPT ); Mon, 18 Oct 2021 13:43:51 -0400 Received: from mail-ua1-x934.google.com (mail-ua1-x934.google.com [IPv6:2607:f8b0:4864:20::934]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 98941C061745 for ; Mon, 18 Oct 2021 10:41:39 -0700 (PDT) Received: by mail-ua1-x934.google.com with SMTP id q13so5365884uaq.2 for ; Mon, 18 Oct 2021 10:41:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=Ym5/eMT1XXXvSklsHO74skF3/hJuEqIN4dprBSaCf9E=; b=S4LHb3XCWbgzPV1akDqvFcodPhbfy611oLMG82tVycdZo0BmqWwRxucM9O6PCwk2Xg CgaUvFH6nqqWPbEE8C4YvmRp1gQx9baSyVj5SYtwL6L2R6tdxI0Z5MEVhaef5pU3XgSS Au2O0MMMc6EbTHVozrr9dlMkbSSPhP4aAYSZUqahaBjBhoJGVXFiLo+r8VdIYXSmpTy3 Sbk05KX4tcskHXTeVZk8bqpd5/JsFEIqzEcsIlgGO0rxPdgFbCCoaqSEAyiy+so1aeai +Q5Ezc37uIg3hU0wb5skrAVTk4joDWHcLnMLUt2yti1kqeFqK9U+a5Mqri/DvzWSIU6Y w2yw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Ym5/eMT1XXXvSklsHO74skF3/hJuEqIN4dprBSaCf9E=; b=MlLFAyWx7XYiC5A7GZ959kwSH9rehUs3c2qA+ju2Eke6GgC+rKy5R3uFBOxmv+R8RM cbHVADrMM9dADMN0kw9n07WmyZPnAdVhvv2F2FvsHqTsbLsO/IipuM1gjgWqXtRxK9Fu y5/Eumbt44d0IF3vFleSljNuWLbpR2/Vqn2DJ6nZ2Um0lLD52RHB/GqZg53NLJMocyNJ XKNcJ3N4FDFVZszCseT+XRiJFjMpNyuz/frAQf8WeRAFhjOkMEZGGD5qzVGfRkg7MuQn rKqrqRIwuTlPCrKOLS/nOmuH7UHescUgnFUESP/GqrzPhg01VOMZ2kIhqsTY+ncnDRzQ C+zA== X-Gm-Message-State: AOAM533zqVCkZ0TUgHu0AhTK+cKtqGxVR2rYsHo3E5gmSiUFcTfO2Sxq 3CJfFu+5IaSTZWKUDztQBIs= X-Google-Smtp-Source: ABdhPJwVkrreUNrGZzlSHYfbkvZbdSX0JaYjnA2yIhwcsIUKdKY5FMZ3Kghll63h1r/k2LwK5KlAWQ== X-Received: by 2002:a9f:36f0:: with SMTP id p103mr27833626uap.42.1634578898653; Mon, 18 Oct 2021 10:41:38 -0700 (PDT) Received: from ?IPv6:2804:431:c7f4:b20b:2ce0:3c04:a56a:40cc? ([2804:431:c7f4:b20b:2ce0:3c04:a56a:40cc]) by smtp.gmail.com with ESMTPSA id 45sm9295409uaq.8.2021.10.18.10.41.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 18 Oct 2021 10:41:38 -0700 (PDT) Subject: Re: [PATCH 5/6] drm: vkms: Prepare `vkms_wb_encoder_atomic_check` to accept multiple formats To: Thomas Zimmermann , rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com Cc: hamohammed.sa@gmail.com, daniel@ffwll.ch, airlied@linux.ie, contact@emersion.fr, leandro.ribeiro@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, lkcamp@lists.libreplanetbr.org References: <20211005201637.58563-1-igormtorrente@gmail.com> <20211005201637.58563-6-igormtorrente@gmail.com> <5507450a-eb69-b24c-9f43-a1780dafbfa9@suse.de> From: Igor Matheus Andrade Torrente Message-ID: Date: Mon, 18 Oct 2021 14:41:33 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <5507450a-eb69-b24c-9f43-a1780dafbfa9@suse.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On 10/18/21 7:14 AM, Thomas Zimmermann wrote: > Hi > > Am 05.10.21 um 22:16 schrieb Igor Matheus Andrade Torrente: >> Currently, the vkms atomic check only goes through the first position of >> the `vkms_wb_formats` vector. >> >> This change prepares the atomic_check to check the entire vector. >> >> Signed-off-by: Igor Matheus Andrade Torrente >> --- >>   drivers/gpu/drm/vkms/vkms_writeback.c | 11 ++++++++++- >>   1 file changed, 10 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c >> b/drivers/gpu/drm/vkms/vkms_writeback.c >> index 5a3e12f105dc..56978f499203 100644 >> --- a/drivers/gpu/drm/vkms/vkms_writeback.c >> +++ b/drivers/gpu/drm/vkms/vkms_writeback.c >> @@ -30,6 +30,8 @@ static int vkms_wb_encoder_atomic_check(struct >> drm_encoder *encoder, >>   { >>       struct drm_framebuffer *fb; >>       const struct drm_display_mode *mode = &crtc_state->mode; >> +    bool format_supported = false; >> +    int i; >>       if (!conn_state->writeback_job || !conn_state->writeback_job->fb) >>           return 0; >> @@ -41,7 +43,14 @@ static int vkms_wb_encoder_atomic_check(struct >> drm_encoder *encoder, >>           return -EINVAL; >>       } >> -    if (fb->format->format != vkms_wb_formats[0]) { >> +    for (i = 0; i < ARRAY_SIZE(vkms_wb_formats); i++) { >> +        if (fb->format->format == vkms_wb_formats[i]) { >> +            format_supported = true; >> +            break; >> +        } >> +    } > > At a minimum, this loop should be in a helper function. But more > generally, I'm surprised that this isn't already covered by the DRM's > atomic helpers. Ok, I can wrap it in a new function. AFAIK the DRM doesn't cover it. But I may be wrong... > > Best regards > Thomas > >> + >> +    if (!format_supported) { >>           DRM_DEBUG_KMS("Invalid pixel format %p4cc\n", >>                     &fb->format->format); >>           return -EINVAL; >> >