From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: [PATCH 02/13] drm/i915: Read the EDP DPCD and PSR Capability Date: Wed, 12 Jun 2013 17:55:43 -0300 Message-ID: <1371070554-1947-2-git-send-email-rodrigo.vivi@gmail.com> References: <1371070554-1947-1-git-send-email-rodrigo.vivi@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: 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) In-Reply-To: <1371070554-1947-1-git-send-email-rodrigo.vivi@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org 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 --- 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; -- 1.7.11.7