From patchwork Fri Aug 13 02:46:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lee, Shawn C" X-Patchwork-Id: 12434639 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=-16.7 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 EC20DC432BE for ; Fri, 13 Aug 2021 02:45:14 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 89A946104F for ; Fri, 13 Aug 2021 02:45:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 89A946104F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 036046E4AD; Fri, 13 Aug 2021 02:45:14 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id BF60B6E4AD for ; Fri, 13 Aug 2021 02:45:12 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10074"; a="195077518" X-IronPort-AV: E=Sophos;i="5.84,317,1620716400"; d="scan'208";a="195077518" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2021 19:45:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,317,1620716400"; d="scan'208";a="504071495" Received: from shawnle1-build-machine.itwn.intel.com ([10.5.253.12]) by orsmga001.jf.intel.com with ESMTP; 12 Aug 2021 19:45:10 -0700 From: Lee Shawn C To: intel-gfx@lists.freedesktop.org Cc: Lee Shawn C , Ville Syrjala , Jani Nikula , Vandita Kulkarni , Cooper Chiou , William Tseng Date: Fri, 13 Aug 2021 10:46:49 +0800 Message-Id: <20210813024649.7197-1-shawn.c.lee@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210812154237.13911-8-shawn.c.lee@intel.com> References: <20210812154237.13911-8-shawn.c.lee@intel.com> Subject: [Intel-gfx] [v4] drm/i915/dsi: Send proper brightness value via MIPI DCS command X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Driver has to swap the endian before send brightness level value to tcon. v2: Use __be16 instead of u16 to fix sparse warning. Reported-by: kernel test robot Cc: Ville Syrjala Cc: Jani Nikula Cc: Vandita Kulkarni Cc: Cooper Chiou Cc: William Tseng Signed-off-by: Lee Shawn C --- drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c index cd85520d36e2..71c2adfa8931 100644 --- a/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c +++ b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c @@ -66,10 +66,9 @@ static void dcs_set_backlight(const struct drm_connector_state *conn_state, u32 { struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(conn_state->best_encoder)); struct mipi_dsi_device *dsi_device; - u8 data = level; + __be16 data = cpu_to_be16(level); enum port port; - /* FIXME: Need to take care of 16 bit brightness level */ for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { dsi_device = intel_dsi->dsi_hosts[port]->device; mipi_dsi_dcs_write(dsi_device, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,