From patchwork Fri Mar 22 00:44:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10864717 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 ED553139A for ; Fri, 22 Mar 2019 00:43:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CA2E72A587 for ; Fri, 22 Mar 2019 00:43:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BC6202A588; Fri, 22 Mar 2019 00:43:30 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 8519B2A547 for ; Fri, 22 Mar 2019 00:43:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A99FC6E21B; Fri, 22 Mar 2019 00:43:20 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 364B26E20D; Fri, 22 Mar 2019 00:43:16 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Mar 2019 17:43:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,254,1549958400"; d="scan'208";a="142773725" Received: from nuc.iind.intel.com ([10.99.66.149]) by FMSMGA003.fm.intel.com with ESMTP; 21 Mar 2019 17:43:14 -0700 From: Ramalingam C To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch Subject: [PATCH v3 05/10] drm/i915/sysfs: Node for hdcp srm Date: Fri, 22 Mar 2019 06:14:43 +0530 Message-Id: <20190322004448.14045-6-ramalingam.c@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190322004448.14045-1-ramalingam.c@intel.com> References: <20190322004448.14045-1-ramalingam.c@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Binary Sysfs entry is created to pass the HDCP SRM table into kerel for the HDCP authentication purpose. Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/i915_sysfs.c | 32 +++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 41313005af42..4621e944a24e 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -576,6 +576,36 @@ static void i915_setup_error_capture(struct device *kdev) {} static void i915_teardown_error_capture(struct device *kdev) {} #endif +static ssize_t +i915_srm_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t offset, size_t count) +{ + struct device *kdev = kobj_to_dev(kobj); + struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); + + return intel_hdcp_srm_update(dev_priv, buf, count); +} + +static const struct bin_attribute srm_attrs = { + .attr = {.name = "hdcp_srm", .mode = S_IWUSR}, + .read = NULL, + .write = i915_srm_write, + .mmap = NULL, + .private = (void *)0 +}; + +static void i915_setup_hdcp_srm(struct device *kdev) +{ + if (sysfs_create_bin_file(&kdev->kobj, &srm_attrs)) + DRM_ERROR("error_state sysfs setup failed\n"); +} + +static void i915_teardown_hdcp_srm(struct device *kdev) +{ + sysfs_remove_bin_file(&kdev->kobj, &srm_attrs); +} + void i915_setup_sysfs(struct drm_i915_private *dev_priv) { struct device *kdev = dev_priv->drm.primary->kdev; @@ -623,12 +653,14 @@ void i915_setup_sysfs(struct drm_i915_private *dev_priv) DRM_ERROR("RPS sysfs setup failed\n"); i915_setup_error_capture(kdev); + i915_setup_hdcp_srm(kdev); } void i915_teardown_sysfs(struct drm_i915_private *dev_priv) { struct device *kdev = dev_priv->drm.primary->kdev; + i915_teardown_hdcp_srm(kdev); i915_teardown_error_capture(kdev); if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))