From patchwork Mon Dec 18 08:43:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 13497348 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 80AB7C35274 for ; Mon, 18 Dec 2023 18:20:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C6E8F10E28E; Mon, 18 Dec 2023 18:20:29 +0000 (UTC) Received: from mail-ej1-f45.google.com (mail-ej1-f45.google.com [209.85.218.45]) by gabe.freedesktop.org (Postfix) with ESMTPS id DE54610E290 for ; Mon, 18 Dec 2023 18:20:28 +0000 (UTC) Received: by mail-ej1-f45.google.com with SMTP id a640c23a62f3a-a234dc0984fso193705466b.0 for ; Mon, 18 Dec 2023 10:20:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1702923627; x=1703528427; 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=fvhZ1lIjD4ghUur3u11IySseoO0BduorZxfAjkW9I5peMy9zjgk9p2L78OzOxn97G9 iMVQV0Se+YqOI2dp6OOMMCzMq9YxMcghazQCkWAXZ4ljOYi0dgBBNn0smSTHCSfAD3nQ euw5EgpLaQ2HEKBLL/+43RXfwYbxX1smGhK1o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702923627; x=1703528427; 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=HTmwxh0XjfjoIKAjS//jvhD8snbluRc6xqKLitZny7E2L7OQUydunmGApqVbY83Vas Vng88uffi4VDicZH1QzJUUxJbG7zCR5x9hFTmlBj7mkajiNsJXFbfo8ddnob2GSpfN8D hGW8q1x0wg31YuHqngR9rAVLcXVScW3CGmcCzWsMQxIsu6hniXgqePCmKD0RaTLyGABg FYQLfeJuSrXRwxhJpPs7i75l7YDmxtfv40xj3weMdaUAXpTJ4D90xTst7nQOuptD6L1M R6kimvCEwbZpqvqQuWLDk5ULTwaFjH3/PsxSzsmx9zKX4FZcR60dW04FiIWvotPdp69B ib3A== X-Gm-Message-State: AOJu0YxDhjMoMcZc2+BCq7/A9yfttTCwTZD17R65uMaVleVXf9SS8uXg 6+L5DvrbGfbBm1ABZR4+G5T2kfpqstt5QMt1SpX7Jw== X-Google-Smtp-Source: AGHT+IFQIjmnqwJHXBWuNV3lOiYbeAZ7NPxnsnxpiSweOVnDxxJk9dtKKOT/fn1raM0scBnAt9eeTA== X-Received: by 2002:a17:907:e8d:b0:a1f:5e5d:d71b with SMTP id ho13-20020a1709070e8d00b00a1f5e5dd71bmr10134407ejc.40.1702889042999; Mon, 18 Dec 2023 00:44:02 -0800 (PST) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-80-182-13-188.retail.telecomitalia.it. [80.182.13.188]) by smtp.gmail.com with ESMTPSA id un5-20020a170907cb8500b009ff77c2e1dasm13775480ejc.167.2023.12.18.00.44.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 00:44:02 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Subject: [PATCH v9 1/2] drm: bridge: samsung-dsim: enter display mode in the enable() callback Date: Mon, 18 Dec 2023 09:43:37 +0100 Message-ID: <20231218084354.508942-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231218084354.508942-1-dario.binacchi@amarulasolutions.com> References: <20231218084354.508942-1-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);