From nobody Sun Sep 21 21:38:53 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C81ACDB465 for ; Mon, 16 Oct 2023 16:57:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233884AbjJPQ47 (ORCPT ); Mon, 16 Oct 2023 12:56:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234374AbjJPQ4l (ORCPT ); Mon, 16 Oct 2023 12:56:41 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91065324A for ; Mon, 16 Oct 2023 09:54:10 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-40776b200e5so26431565e9.2 for ; Mon, 16 Oct 2023 09:54:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1697475249; x=1698080049; darn=vger.kernel.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=AhGTCeJTgvu597dzkwlQwgzYcEyeuUmDXvIZAq5l/4I=; b=KIXmQqYeNZ+MQKazc4bVk01kpUUKf4aansqE25G3Y9+IaGJtwLEzmrQ91UzNhb5hA2 lO0u1A4BpsFA7AgwdgF6R1TJ1HSGfTs02FCtsIJElbx27a+d9pz0QM1Ilmlp/X4ZanX9 eDnDqDSr/P4mJF1cKtNwxKQKtGvtjfw/cUxp6FpowDpuI/ecljtUkS4s3JnFZ+DAIXKN RTypNew6bXAgjGBkLqIJQ/uWH4IZbMnRmOC0HTO70rfZAq/80oNFur/EiydrpmCIxkfI VNp1mGX5Rr9BjajfjS25mMA20jdKRxUaQ2t35YUGLmK/q61gK/RKlgUtIU4/3AFfLC5a 2QFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697475249; x=1698080049; 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=AhGTCeJTgvu597dzkwlQwgzYcEyeuUmDXvIZAq5l/4I=; b=bTwqkcOddndNJNzhAw9FSKhNcNgoPxCwODPYzTFoccsTLfCKi9b601uScIMaNnIvtC CviYKB4IbBDy2zJ1yQr5dKSJBzmkSrhwvJeBM4lhSNiSitUpxH7fYyc1darKkK8mG0rq 31wzf5Jlqeu+EoVAew5kwsS5wCYAcfsxzcosM4BD6fDe3cbJT+AmCZj8lITtPeBHJQha ZFnksL8wMzp63cjU57J6OFsOrVTYMKG970qSbzya2PbBBDqBcCE4lYUBb+aqF9dqUbM5 fdVNtnTSrNeuRh4nsnOX0B25mvgJ+GSz7U8D6QzaHGkZEq7Ewr4z8CXBNkn/lRYE3zMK bHYw== X-Gm-Message-State: AOJu0YyvMBbYoSkHEFusB4MuP05p1hhO5yM6Sgktt2AbDihiWaydsRLy 8jRzbvaOqM978T6Y6NPw6DC7cA== X-Google-Smtp-Source: AGHT+IFMc1ydiV35u/i4xaIUD7bB3YsAkS433GNNfx1qmd94WFx7VWq0imHb4rjYzorutlJy9cRnjA== X-Received: by 2002:a05:600c:4f49:b0:407:8b61:da70 with SMTP id m9-20020a05600c4f4900b004078b61da70mr784351wmq.9.1697475248812; Mon, 16 Oct 2023 09:54:08 -0700 (PDT) Received: from eriador.lumag.spb.ru ([45.84.211.189]) by smtp.gmail.com with ESMTPSA id s19-20020a05600c45d300b0040648217f4fsm7638996wmo.39.2023.10.16.09.54.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Oct 2023 09:54:08 -0700 (PDT) From: Dmitry Baryshkov To: Dave Stevenson , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Douglas Anderson , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , Konrad Dybcio , Jessica Zhang Cc: Marek Vasut , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org Subject: [RFC PATCH 06/10] drm/bridge: tc358762: add support for manual DSI power control Date: Mon, 16 Oct 2023 19:53:51 +0300 Message-ID: <20231016165355.1327217-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231016165355.1327217-1-dmitry.baryshkov@linaro.org> References: <20231016165355.1327217-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Start migrating tc358762 bridge to new manual DSI power control API. If the tight power control is not available, default to the existing pre_enable_prev_first flag. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/bridge/tc358762.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc3= 58762.c index 7b9f05f95fd1..efb1da4487c9 100644 --- a/drivers/gpu/drm/bridge/tc358762.c +++ b/drivers/gpu/drm/bridge/tc358762.c @@ -72,6 +72,7 @@ struct tc358762 { struct device *dev; struct drm_bridge bridge; struct regulator *regulator; + struct mipi_dsi_host *dsi_host; struct drm_bridge *panel_bridge; struct gpio_desc *reset_gpio; struct drm_display_mode mode; @@ -163,6 +164,8 @@ static void tc358762_post_disable(struct drm_bridge *br= idge, struct drm_bridge_s =20 ctx->pre_enabled =3D false; =20 + mipi_dsi_host_power_down(ctx->dsi_host); + if (ctx->reset_gpio) gpiod_set_value_cansleep(ctx->reset_gpio, 0); =20 @@ -185,6 +188,10 @@ static void tc358762_pre_enable(struct drm_bridge *bri= dge, struct drm_bridge_sta usleep_range(5000, 10000); } =20 + ret =3D mipi_dsi_host_power_up(ctx->dsi_host); + if (ret < 0) + dev_err(ctx->dev, "error powering up the DSI host (%d)\n", ret); + ret =3D tc358762_init(ctx); if (ret < 0) dev_err(ctx->dev, "error initializing bridge (%d)\n", ret); @@ -277,10 +284,16 @@ static int tc358762_probe(struct mipi_dsi_device *dsi) if (ret < 0) return ret; =20 + ctx->dsi_host =3D dsi->host; + ctx->bridge.funcs =3D &tc358762_bridge_funcs; ctx->bridge.type =3D DRM_MODE_CONNECTOR_DPI; ctx->bridge.of_node =3D dev->of_node; - ctx->bridge.pre_enable_prev_first =3D true; + + if (mipi_dsi_host_power_control_available(dsi->host)) + dsi->mode_flags |=3D MIPI_DSI_MANUAL_POWERUP; + else + ctx->bridge.pre_enable_prev_first =3D true; =20 drm_bridge_add(&ctx->bridge); =20 --=20 2.42.0