From patchwork Thu Dec 7 14:16:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 13483344 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 25CFFC4167B for ; Thu, 7 Dec 2023 14:17:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C862F10E8CD; Thu, 7 Dec 2023 14:17:37 +0000 (UTC) Received: from mail-lj1-x234.google.com (mail-lj1-x234.google.com [IPv6:2a00:1450:4864:20::234]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9ABCF10E8CA for ; Thu, 7 Dec 2023 14:17:33 +0000 (UTC) Received: by mail-lj1-x234.google.com with SMTP id 38308e7fff4ca-2c9ea37ac87so10888231fa.3 for ; Thu, 07 Dec 2023 06:17:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1701958652; x=1702563452; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3CX2gA6r/dtvGkH0YEYWwI6mzbAd5lMyIJziHnyg55Q=; b=EmYpr7UmWl1QiO19r2QWZduGFwnK5nKY9w1Lgs+ohlSPIOiqKAJFQFfyk0cle2bFFs HVrRbnleIWQOfQ3JrRvrca0Q/UjIiphjCwKv063r1+ZHP9IV6L76G5nYGP+cJIIAz/+Y YoXFHn9A4DU6oyTFDiSfPXwwSLE3Q8gMUBM8I= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701958652; x=1702563452; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3CX2gA6r/dtvGkH0YEYWwI6mzbAd5lMyIJziHnyg55Q=; b=UI2hfiNUR3ve1FXDmwStegBtD5ugzEW797Bv+RlED9PpDN4NMPW5taRlrZGPKWNWpB T7AJw1MEP93CDlOzT29lBqA6PZmCpbHIinx1lAiWW8qI0P4hnx3ZdFhroLpdX42nv7gh Y0gf5nuNKPqCANYm1YYwlS+yYSZk5BtBwvtEqQkledicfONbmYVUVRII/3BDGp+/VAju w2+VGDQ4gEeFpVKjx3w5NgBqLnJw5GTdD5gUGug1nEWESraFAh6RxvU2dg3PFcrh8zaE B0vQDO4qKOD27wv15EQPdPJ8FXXid4HEEs5SXuqnE92uP/u8fa3XuRpCEXOiMMfKpcR7 TYTA== X-Gm-Message-State: AOJu0Yy30t0qUk15gIqGOtJnu9Tnx5wY3mWwmLAgFHWQ6HjzxvogTytd PvJwG9+y84FJi1fLKST9m+9s4g== X-Google-Smtp-Source: AGHT+IFJvB8cKYZ3VxVSrUHzta/NPT1ZfRlo15fZc1l37AxNkD46kaBE9H1jN1RtXiBRgG2tXBj9Eg== X-Received: by 2002:a2e:9250:0:b0:2ca:1030:f695 with SMTP id v16-20020a2e9250000000b002ca1030f695mr1517835ljg.78.1701958651744; Thu, 07 Dec 2023 06:17:31 -0800 (PST) Received: from localhost.localdomain ([2001:b07:6474:ebbf:9bf:959c:3c66:46c2]) by smtp.gmail.com with ESMTPSA id f24-20020a170906c09800b00a1e814b7155sm885421ejz.62.2023.12.07.06.17.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Dec 2023 06:17:31 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Subject: [PATCH v5 03/10] drm: bridge: samsung-dsim: enter display mode in the enable() callback Date: Thu, 7 Dec 2023 15:16:32 +0100 Message-ID: <20231207141723.108004-4-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231207141723.108004-1-dario.binacchi@amarulasolutions.com> References: <20231207141723.108004-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 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: , Cc: Maxime Ripard , Neil Armstrong , Dario Binacchi , Robert Foss , Andrzej Hajda , Thomas Zimmermann , Jonas Karlman , Amarula patchwork , dri-devel@lists.freedesktop.org, Jernej Skrabec , Jagan Teki , Marek Szyprowski , michael@amarulasolutions.com, Laurent Pinchart Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The synaptics-r63353 (panel-bridge) can only be configured in command mode. So, samsung-dsim (bridge) must not be in display mode during the prepare()/unprepare() of the panel-bridge. Setting the "pre_enable_prev_first" flag to true allows the prepare() of the panel-bridge to be called between the pre_enabled() and enabled() of the bridge. So, the bridge can enter display mode only in the enabled(). The unprepare() of the panel-bridge is instead called between the disable() and post_disable() of the bridge. So, the disable() must exit the display mode (i .e. enter command mode) to allow the panel-bridge to receive DSI commands. samsung_dsim_atomic_pre_enable -> command mode r63353_panel_prepare -> send DSI commands samsung_dsim_atomic_enable -> enter display mode samsung_dsim_atomic_disable -> exit display mode (command mode) r63353_panel_unprepare -> send DSI commands samsung_dsim_atomic_post_disable Co-developed-by: Michael Trimarchi Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi --- (no changes since v1) drivers/gpu/drm/bridge/samsung-dsim.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index be5914caa17d..15bf05b2bbe4 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -1494,7 +1494,6 @@ static void samsung_dsim_atomic_pre_enable(struct drm_bridge *bridge, return; samsung_dsim_set_display_mode(dsi); - samsung_dsim_set_display_enable(dsi, true); } } @@ -1507,6 +1506,7 @@ static void samsung_dsim_atomic_enable(struct drm_bridge *bridge, samsung_dsim_set_display_mode(dsi); samsung_dsim_set_display_enable(dsi, true); } else { + samsung_dsim_set_display_enable(dsi, true); samsung_dsim_set_stop_state(dsi, false); } @@ -1524,6 +1524,8 @@ static void samsung_dsim_atomic_disable(struct drm_bridge *bridge, if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type)) samsung_dsim_set_stop_state(dsi, true); + samsung_dsim_set_display_enable(dsi, false); + dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE; } @@ -1532,7 +1534,8 @@ static void samsung_dsim_atomic_post_disable(struct drm_bridge *bridge, { struct samsung_dsim *dsi = bridge_to_dsi(bridge); - samsung_dsim_set_display_enable(dsi, false); + if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type)) + samsung_dsim_set_stop_state(dsi, true); dsi->state &= ~DSIM_STATE_ENABLED; pm_runtime_put_sync(dsi->dev);