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 X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 006C0C433E6 for ; Mon, 1 Mar 2021 19:41:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B4C2660232 for ; Mon, 1 Mar 2021 19:41:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241672AbhCATlo (ORCPT ); Mon, 1 Mar 2021 14:41:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:50722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241610AbhCATcu (ORCPT ); Mon, 1 Mar 2021 14:32:50 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1601D6517F; Mon, 1 Mar 2021 17:09:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614618590; bh=DX675dF+c7aBs0VPMu0flNiJY7T+22HCjl74IRur11U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FZXYaqvNbehkmdLTVp3lKZvOJKOpG7aMYRqphuDcwNbvMvrUcdJWsC0KDL0TV0ofO 9UvMO2eo59wvdawwAjyTfcsnviaIhFWELqDAr0BSUgRCgAimFuMVfoHwKHgy6SIQAm vyq+i/qrSyQGA3HuJpaTD7YzylIHLJUBQdj8DI5w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Zimmermann , Dave Stevenson , Maxime Ripard , Sasha Levin Subject: [PATCH 5.10 143/663] drm/vc4: hdmi: Take into account the clock doubling flag in atomic_check Date: Mon, 1 Mar 2021 17:06:31 +0100 Message-Id: <20210301161148.843440907@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161141.760350206@linuxfoundation.org> References: <20210301161141.760350206@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Maxime Ripard [ Upstream commit 320e84dc6111ecc1c957e2b186d4d2bafee6bde2 ] Commit 63495f6b4aed ("drm/vc4: hdmi: Make sure our clock rate is within limits") was intended to compute the pixel rate to make sure we remain within the boundaries of what the hardware can provide. However, unlike what mode_valid was checking for, we forgot to take into account the clock doubling flag that can be set for modes. Let's honor that flag if it's there. Acked-by: Thomas Zimmermann Reported-by: Thomas Zimmermann Reviewed-by: Dave Stevenson Fixes: 63495f6b4aed ("drm/vc4: hdmi: Make sure our clock rate is within limits") Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20201215154243.540115-4-maxime@cerno.tech Signed-off-by: Sasha Levin --- drivers/gpu/drm/vc4/vc4_hdmi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index eaba98e15de46..db06f52de9d91 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -791,6 +791,9 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder, pixel_rate = mode->clock * 1000; } + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + pixel_rate = pixel_rate * 2; + if (pixel_rate > vc4_hdmi->variant->max_pixel_clock) return -EINVAL; -- 2.27.0