From patchwork Sat Jun 12 12:07:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajeev Nandan X-Patchwork-Id: 12317039 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B01AC49EA6 for ; Sat, 12 Jun 2021 12:09:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3EFEE613AA for ; Sat, 12 Jun 2021 12:09:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231311AbhFLMLN (ORCPT ); Sat, 12 Jun 2021 08:11:13 -0400 Received: from alexa-out.qualcomm.com ([129.46.98.28]:29689 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231288AbhFLMLL (ORCPT ); Sat, 12 Jun 2021 08:11:11 -0400 Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 12 Jun 2021 05:09:11 -0700 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/AES256-SHA; 12 Jun 2021 05:09:09 -0700 X-QCInternal: smtphost Received: from rajeevny-linux.qualcomm.com ([10.204.66.121]) by ironmsg02-blr.qualcomm.com with ESMTP; 12 Jun 2021 17:38:32 +0530 Received: by rajeevny-linux.qualcomm.com (Postfix, from userid 2363605) id 4425721465; Sat, 12 Jun 2021 17:38:31 +0530 (IST) From: Rajeev Nandan To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Rajeev Nandan , linux-kernel@vger.kernel.org, thierry.reding@gmail.com, sam@ravnborg.org, robdclark@gmail.com, dianders@chromium.org, lyude@redhat.com, jani.nikula@intel.com, robh@kernel.org, laurent.pinchart@ideasonboard.com, a.hajda@samsung.com, daniel.thompson@linaro.org, hoegsberg@chromium.org, abhinavk@codeaurora.org, seanpaul@chromium.org, kalyan_t@codeaurora.org, mkrishn@codeaurora.org, lee.jones@linaro.org, jingoohan1@gmail.com, linux-fbdev@vger.kernel.org Subject: [v6 2/5] drm/panel-simple: Support DP AUX backlight Date: Sat, 12 Jun 2021 17:37:59 +0530 Message-Id: <1623499682-2140-3-git-send-email-rajeevny@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1623499682-2140-1-git-send-email-rajeevny@codeaurora.org> References: <1623499682-2140-1-git-send-email-rajeevny@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org If there is no backlight specified in the device tree and the panel has access to the DP AUX channel then create a DP AUX backlight if supported by the panel. Signed-off-by: Rajeev Nandan Reviewed-by: Douglas Anderson --- (no changes since v5) This patch depends on the previous patch (2/5) of this series. Changes in v4: - New Changes in v5: - Address review comments and move backlight functions to drm_panel.c (Douglas) - Create and register DP AUX backlight if there is no backlight specified in the device tree and panel has the DP AUX channel. (Douglas) - The new drm_panel_dp_aux_backlight() will do the drm_edp_backlight_supported() check. drivers/gpu/drm/panel/panel-simple.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index df6fbd1..26555ec 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -800,6 +800,12 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc, if (err) goto disable_pm_runtime; + if (!panel->base.backlight && panel->aux) { + err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); + if (err) + goto disable_pm_runtime; + } + drm_panel_add(&panel->base); return 0;