From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: [PATCH 02/11] drm/i915: Read the EDP DPCD and PSR Capability Date: Thu, 11 Jul 2013 18:44:56 -0300 Message-ID: <1373579105-1732-3-git-send-email-rodrigo.vivi@gmail.com> References: <1373579105-1732-1-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-gg0-f177.google.com (mail-gg0-f177.google.com [209.85.161.177]) by gabe.freedesktop.org (Postfix) with ESMTP id CCEE5E6677 for ; Thu, 11 Jul 2013 14:45:22 -0700 (PDT) Received: by mail-gg0-f177.google.com with SMTP id i1so2859713ggn.8 for ; Thu, 11 Jul 2013 14:45:22 -0700 (PDT) In-Reply-To: <1373579105-1732-1-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 v4: remove parentheses. Noticed by Paulo. 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 7db2cd7..bf0bfa1 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1369,6 +1369,12 @@ static void intel_dp_get_config(struct intel_encoder *encoder, } } +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); @@ -2282,6 +2288,13 @@ 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 5dfc1a0..d25726d 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -487,6 +487,7 @@ 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