From patchwork Sun Jun 30 15:01:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 11024461 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2E313138B for ; Sun, 30 Jun 2019 15:03:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 22ACD2851B for ; Sun, 30 Jun 2019 15:03:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 16EAB28553; Sun, 30 Jun 2019 15:03:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BD0D0284FC for ; Sun, 30 Jun 2019 15:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726798AbfF3PDQ (ORCPT ); Sun, 30 Jun 2019 11:03:16 -0400 Received: from mail-qt1-f193.google.com ([209.85.160.193]:33918 "EHLO mail-qt1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726500AbfF3PDQ (ORCPT ); Sun, 30 Jun 2019 11:03:16 -0400 Received: by mail-qt1-f193.google.com with SMTP id m29so11928229qtu.1; Sun, 30 Jun 2019 08:03:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=RWe1N3LG/0qF/4OtUPg5KudfEZRgRNv8F1jllSBzO58=; b=ffrROOTrYan4x30i16kRzeRZh0cNY1tR6zoQHYUxePgn0RD9arBQo0wHXqQS24AEO6 z/yAVqI8q8G78Fg6d+1EUBN8UmExk2L1ugT6WNCVJALHVq01478i2+l1I2OsTqluOTvA hnUGXEUyh87ggaQ3r/9ItW5b4I1Kwg9/BxMmb+QqZfOz9+FOqBAvZwzWf6ScwuaMYKAo FQHpWCWZ8a8g/vHHXP38B6zewBop6StVjcS7RpIqxbEZlvtQHBQp0LLU8yWS7KWrdxue /Be2CIgOEwZ7ZYds7RkxeMFKCKVGQlqgebZ+v8Fs5+o6G3Ci8sa/+d+uWVzXQkc8J1nt D3Ww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=RWe1N3LG/0qF/4OtUPg5KudfEZRgRNv8F1jllSBzO58=; b=C9fIaLsLPzbfWfK5B6MQY1WGvN2/N+OJcz/M5CGlikRXWXU3xHP1N/g2LDX1xdkj9O 7gcYBZiaGTAwK/wcIeQ6DGuV65EYCOUzG5mWYnpkr7yyxIM1o2GUcMM8uHUFyWodyw6I E645DS+u/R5onaCi7n7vlEBfW6nJIZE6Dq3boIwr1+HzvtCCGvvJNCfX5A0+UDx5/9DZ WwtBFnXk84rpjTtWaQdcQF8CsgobiGC6vEJzSMCdkpVlDt3pMCUmARhu1Fj8iAPbUR43 kU2otdPRs8iKETzxFdOOghRY74qN6iiW5PB9xgkX/XDY+Ju9zr+7tv28wFsMAKUf/DVn GZlg== X-Gm-Message-State: APjAAAVLxdlcDVA47XlUiTXgg43NzN4ZuiQ/wtKXkzmnr2Kp3ftP7O3B TZoEsaJqfiFSFFc47fd54L8= X-Google-Smtp-Source: APXvYqw+jlFz4lc9QWDni/7uD8aWjy+oIsfuvaIWeBwdqBoQFL00TSoQqCRML6G+VV/wap1Zdd6izw== X-Received: by 2002:ac8:2b51:: with SMTP id 17mr16313957qtv.206.1561906994849; Sun, 30 Jun 2019 08:03:14 -0700 (PDT) Received: from localhost ([2601:184:4780:7861:5010:5849:d76d:b714]) by smtp.gmail.com with ESMTPSA id l40sm4242251qtc.51.2019.06.30.08.03.14 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 30 Jun 2019 08:03:14 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org, aarch64-laptops@lists.linaro.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, Rob Clark , Andrzej Hajda , Laurent Pinchart , David Airlie , Daniel Vetter , linux-kernel@vger.kernel.org Subject: [PATCH 5/5] drm/bridge: ti-sn65dsi86: support booloader enabled display Date: Sun, 30 Jun 2019 08:01:43 -0700 Message-Id: <20190630150230.7878-6-robdclark@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190630150230.7878-1-robdclark@gmail.com> References: <20190630150230.7878-1-robdclark@gmail.com> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Rob Clark Request the enable gpio ASIS to avoid disabling bridge during probe, if already enabled. And if already enabled, defer enabling runpm until attach to avoid cutting off the power to the bridge. Once we get to attach, we know panel and drm driver are probed successfully, so at this point it i s safe to enable runpm and reset the bridge. If we do it earlier, we kill efifb (in the case that panel or drm driver do not probe successfully, giving the user no way to see what is going on. Signed-off-by: Rob Clark --- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 7a046bcdd81b..8bdc33576992 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -257,6 +257,12 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge) .node = NULL, }; + if (gpiod_get_value(pdata->enable_gpio)) { + pm_runtime_enable(pdata->dev); + ti_sn_bridge_resume(pdata->dev); + ti_sn_bridge_suspend(pdata->dev); + } + ret = drm_connector_init(bridge->dev, &pdata->connector, &ti_sn_bridge_connector_funcs, DRM_MODE_CONNECTOR_eDP); @@ -813,7 +819,7 @@ static int ti_sn_bridge_probe(struct i2c_client *client, dev_set_drvdata(&client->dev, pdata); pdata->enable_gpio = devm_gpiod_get(pdata->dev, "enable", - GPIOD_OUT_LOW); + GPIOD_ASIS); if (IS_ERR(pdata->enable_gpio)) { DRM_ERROR("failed to get enable gpio from DT\n"); ret = PTR_ERR(pdata->enable_gpio); @@ -843,7 +849,9 @@ static int ti_sn_bridge_probe(struct i2c_client *client, if (ret) return ret; - pm_runtime_enable(pdata->dev); + if (!gpiod_get_value(pdata->enable_gpio)) { + pm_runtime_enable(pdata->dev); + } i2c_set_clientdata(client, pdata);