From patchwork Wed Jun 12 20:55:43 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 2712281 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 72A9D9F1E2 for ; Wed, 12 Jun 2013 20:58:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 84D8420261 for ; Wed, 12 Jun 2013 20:58:17 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id B290F2025F for ; Wed, 12 Jun 2013 20:58:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CBE3DE5C0C for ; Wed, 12 Jun 2013 13:58:16 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-pd0-f180.google.com (mail-pd0-f180.google.com [209.85.192.180]) by gabe.freedesktop.org (Postfix) with ESMTP id B2AE3E6403 for ; Wed, 12 Jun 2013 13:56:10 -0700 (PDT) Received: by mail-pd0-f180.google.com with SMTP id 10so10438508pdi.25 for ; Wed, 12 Jun 2013 13:56:10 -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=prozWpT+lyj85b1YEhonxKrME/LqblNqZ78bClFNpVo=; b=lCjVvRo5ByFYp9yzVPGqgmyIaIcCPKCdhLaw0SRX3OjP8ElMpi6zzRxGzRt6/4fCgi +DbYawxv0y7a56xa4QYV4VbMzUe9tjMa54tWq0YZXJ4CzzfQ8kFUBF4TVjNguMhrQSNp vsGfFz/t58oHjH8+fCNzwBgNrmTfBVIdgwzKp+ukIIqAbNR5kXx90wV9QaHxUJfIXYEw U1nPKBipMqSMC1VOET2IYtEwxxP0lKKcDu/mhht9V+VrzRoebgeqDryDMmahwGHQ55cg ewhernEKPtyzQS48f369BBcdbUDD2On/RzdvA5xlo7p3/4QRRU2hrdmWhrxvb84aOx3p Bc3A== X-Received: by 10.66.216.136 with SMTP id oq8mr25471260pac.161.1371070570413; Wed, 12 Jun 2013 13:56:10 -0700 (PDT) Received: from localhost (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by mx.google.com with ESMTPSA id pl9sm20437245pbc.5.2013.06.12.13.56.08 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Wed, 12 Jun 2013 13:56:09 -0700 (PDT) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Wed, 12 Jun 2013 17:55:43 -0300 Message-Id: <1371070554-1947-2-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1371070554-1947-1-git-send-email-rodrigo.vivi@gmail.com> References: <1371070554-1947-1-git-send-email-rodrigo.vivi@gmail.com> Subject: [Intel-gfx] [PATCH 02/13] 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=-4.3 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=ham 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 Signed-off-by: Shobhit Kumar Signed-off-by: Rodrigo Vivi Reviewed-by: Jani Nikula Reviewed-by: Paulo Zanoni --- 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;