From patchwork Sat Jun 15 17:03:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonas Karlman X-Patchwork-Id: 13699334 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 694DFC2BA12 for ; Sat, 15 Jun 2024 17:16:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B5AA610E280; Sat, 15 Jun 2024 17:16:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=kwiboo.se header.i=@kwiboo.se header.b="LAcUnV6o"; dkim-atps=neutral Received: from smtp.forwardemail.net (smtp.forwardemail.net [149.28.215.223]) by gabe.freedesktop.org (Postfix) with ESMTPS id E8F4A10E0CC for ; Sat, 15 Jun 2024 17:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-ID: Date: Subject: Cc: To: From; q=dns/txt; s=fe-e1b5cab7be; t=1718471748; bh=ScLXL7bFS6O80CUAw7XPEvNboE3+OLzOZeGQt7f1YM8=; b=LAcUnV6omwYYioZOtmTtBzwYc866BnsYGpKtcADuSssU8qutBZJD9uvio/D96iS6xkVdiLGpu M4WEg2PtmWwGewE19jW1UbP9g0nwIwxo5mEA9lGYluVgMaheRmFDqi4hONk4yR5ZOurQaRWT//D 4Ft3gHKy/mkfSXKaS5eJHVMz63BEQCaczSe3gdhUdC36SjwgGnfcr1jOAOxxrXhA3BoClPmbgGp Mjy0C7Pg/mUTD3bMb6pIxkhOhjGfAoDMgodvbuNEkbsJNvoxsvhbdYQz5ucX0Lc0kup0rE0xNki XIT3okUqt8g2RSEf8eEKO+YFBemQ7mSEJVSPpr33Gs4Q== From: Jonas Karlman To: dri-devel@lists.freedesktop.org, Sandy Huang , " =?utf-8?q?Heiko_St=C3=BCbner?= " , Andy Yan , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Zheng Yang Cc: linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Jonas Karlman Subject: [PATCH 04/13] drm/rockchip: dw_hdmi: Fix reading EDID when using a forced mode Date: Sat, 15 Jun 2024 17:03:55 +0000 Message-ID: <20240615170417.3134517-5-jonas@kwiboo.se> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240615170417.3134517-1-jonas@kwiboo.se> References: <20240615170417.3134517-1-jonas@kwiboo.se> MIME-Version: 1.0 X-Report-Abuse-To: abuse@forwardemail.net X-Report-Abuse: abuse@forwardemail.net X-Complaints-To: abuse@forwardemail.net X-ForwardEmail-Version: 0.4.40 X-ForwardEmail-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 149.28.215.223 X-ForwardEmail-ID: 666dc9aa24e0254b3980401b X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" EDID cannot be read on RK3328 until after read_hpd has been called and correct io voltage has been configured based on connection status. When a forced mode is used, e.g. video=1920x1080@60e, the connector detect ops, that in turn normally calls the read_hpd, never gets called. This result in reading EDID to fail in connector get_modes ops. Call dw_hdmi_rk3328_read_hpd at end of dw_hdmi_rk3328_setup_hpd to correct io voltage and allow reading EDID after setup_hpd. Fixes: 1c53ba8f22a1 ("drm/rockchip: dw_hdmi: add dw-hdmi support for the rk3328") Signed-off-by: Jonas Karlman --- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index fe33092abbe7..aae48e906af1 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -434,6 +434,8 @@ static void dw_hdmi_rk3328_setup_hpd(struct dw_hdmi *dw_hdmi, void *data) HIWORD_UPDATE(RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK, RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK | RK3328_HDMI_HPD_IOE)); + + dw_hdmi_rk3328_read_hpd(dw_hdmi, data); } static const struct dw_hdmi_phy_ops rk3228_hdmi_phy_ops = {