From patchwork Tue Jun 25 01:58:19 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 2774301 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DE7A1C0AB1 for ; Tue, 25 Jun 2013 02:31:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 084A920135 for ; Tue, 25 Jun 2013 02:31:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 114F62017F for ; Tue, 25 Jun 2013 02:31:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D52B4E5F52 for ; Mon, 24 Jun 2013 19:31:53 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-pa0-f50.google.com (mail-pa0-f50.google.com [209.85.220.50]) by gabe.freedesktop.org (Postfix) with ESMTP id 781EDE5DBF for ; Mon, 24 Jun 2013 18:58:25 -0700 (PDT) Received: by mail-pa0-f50.google.com with SMTP id fb1so11918854pad.37 for ; Mon, 24 Jun 2013 18:58:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=grybJnxPBofAL+h35wKv5CEjoaPVF43U7LtCP0tSd4Y=; b=eOkdQJTb6GtorzpRxZuh/sbkKB11QnZxej7azmkBxrJr/CBoQ7V0wQ6kM1opwxG2AP kwt/aZ/xaUkbqp+8nMdbmykZKobjveTsQb1AAMGYXMxTETS/UpLq3kBZalkhCf4epxmc zFzsZ5Pq5cwuKZlq6d2bTarI1Bszi8VNRPFctUf+gEoDGfo3afPRdF7e2QI5F2zFr4rS vWXBX7/ycF5CNTclU3qzHxB7ulsP3Xuz9JgHuJYv1Wgr74ppM3KtOfu/ZzrNjHjd6M9P StrucOoYxMZpYpBV7+WDFSXo1XQ/OzaWKqn3YHopb8mX4MRO0WZ59i0hP1UifpG8nakc oBfA== X-Received: by 10.68.197.136 with SMTP id iu8mr26449724pbc.183.1372125505450; Mon, 24 Jun 2013 18:58:25 -0700 (PDT) Received: from localhost (jfdmzpr04-ext.jf.intel.com. [134.134.137.73]) by mx.google.com with ESMTPSA id yj2sm20571747pbb.40.2013.06.24.18.58.23 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 24 Jun 2013 18:58:24 -0700 (PDT) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Mon, 24 Jun 2013 22:58:19 -0300 Message-Id: <1372125499-7217-1-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: References: Subject: [Intel-gfx] [PATCH] drm/i915: Read the EDP DPCD and PSR Capability X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Shobhit Kumar v2: reuse of just created is_edp_psr and put it at right place. v3: move is_edp_psr above intel_edp_disable Reviewed-by: Paulo Zanoni Reviewed-by: Jani Nikula Signed-off-by: Shobhit Kumar Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_dp.c | 13 +++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 759a1c5..5332186 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1342,6 +1342,12 @@ static void intel_dp_get_config(struct intel_encoder *encoder, pipe_config->adjusted_mode.flags |= flags; } +static bool is_edp_psr(struct intel_dp *intel_dp) +{ + return (is_edp(intel_dp) && + (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED)); +} + static void intel_disable_dp(struct intel_encoder *encoder) { struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); @@ -2255,6 +2261,13 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp) if (intel_dp->dpcd[DP_DPCD_REV] == 0) return false; /* DPCD not present */ + /* Check if the panel supports PSR */ + memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); + intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, + intel_dp->psr_dpcd, + sizeof(intel_dp->psr_dpcd)); + if (is_edp_psr(intel_dp)) + DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) return true; /* native DP sink */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 0445d8c..18d9dea 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -470,6 +470,7 @@ struct intel_dp { uint8_t link_bw; uint8_t lane_count; uint8_t dpcd[DP_RECEIVER_CAP_SIZE]; + uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE]; uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; struct i2c_adapter adapter; struct i2c_algo_dp_aux_data algo;