From patchwork Wed Jul 12 08:28:50 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 9836251 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2C24260363 for ; Wed, 12 Jul 2017 08:30:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B48C1FF2D for ; Wed, 12 Jul 2017 08:30:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0C8AE284FF; Wed, 12 Jul 2017 08:30:05 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9F4FB1FF2D for ; Wed, 12 Jul 2017 08:30:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 133AC6E3A0; Wed, 12 Jul 2017 08:29:37 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 251886E3A0; Wed, 12 Jul 2017 08:29:35 +0000 (UTC) Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Jul 2017 01:29:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.40,349,1496127600"; d="scan'208";a="126135033" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by fmsmga006.fm.intel.com with ESMTP; 12 Jul 2017 01:29:32 -0700 From: Ramalingam C To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, daniel.vetter@intel.com Subject: [RFC v1 06/20] drm/hdcp: display driver callback funcs defined Date: Wed, 12 Jul 2017 13:58:50 +0530 Message-Id: <1499848144-8456-7-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1499848144-8456-1-git-send-email-ramalingam.c@intel.com> References: <1499848144-8456-1-git-send-email-ramalingam.c@intel.com> Cc: Ramalingam C , uma.shankar@intel.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Callback functions for Platform specific services are defined. These pointers has to be initialized from display driver's hdcp_init and passed onto drm_hdcp_init. drm_hdcp_funcs will have pointers of functions common for all HDCP versions supported on that platform. Signed-off-by: Ramalingam C --- include/drm/drm_hdcp.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index bf77d37..2a48ef9 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -28,6 +28,7 @@ #define __DRM_HDCP_H__ struct drm_connector; +struct drm_hdcp; /** * HDCP Software stack specific @@ -67,6 +68,43 @@ enum wired_protocol { WIRED_PROTOCOL_DP }; +struct drm_hdcp_funcs { + + /** + * @link_write: + * + * Service Function to implement the HDCP protocol write on + * I2C/AUX bus based on HDCP protocol. + * + * returns No of Bytes written on success + * else negative error codes + **/ + ssize_t (*link_write)(struct drm_hdcp *hdcp, uint32_t offset, + void *buf, size_t size); + + /** + * @link_read: + * + * Service Function to implement the HDCP protocol read on + * I2C/AUX bus based on HDCP protocol. + * + * returns No of Bytes read on success + * else negative error codes + **/ + ssize_t (*link_read)(struct drm_hdcp *hdcp, uint32_t offset, + void *buf, size_t size); + + /** + * @late_init: + * + * Service function to do any deferred init at platform level. + * + * returns 0 on success + * else negative error codes + **/ + int (*late_init)(struct drm_hdcp *hdcp); +}; + /** * Struct drm_hdcp - central drm hdcp control structure */ @@ -83,6 +121,8 @@ struct drm_hdcp { /* HDMI/DP Protocol */ enum wired_protocol protocol; + const struct drm_hdcp_funcs *hdcp_funcs; + struct mutex mutex; };