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[46.91.226.206]) by smtp.gmail.com with ESMTPSA id z15sm25195288wrr.19.2019.10.24.09.45.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2019 09:45:47 -0700 (PDT) From: Thierry Reding To: Thierry Reding Subject: [PATCH 05/32] drm/tegra: dp: Probe link using existing parsing helpers Date: Thu, 24 Oct 2019 18:45:07 +0200 Message-Id: <20191024164534.132764-6-thierry.reding@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191024164534.132764-1-thierry.reding@gmail.com> References: <20191024164534.132764-1-thierry.reding@gmail.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=abbwhhQgie2zwXLpQrwNZHmhm1e7uRKQChzXAIX90vQ=; b=vXoojypPny2wjvKL3hyDhbkqvgKFOT+etdOa+s8a8OplRP+/bn6EpScpzZFwTv6vLL OojQ16wXU91uAGGQCRFsWL4utnFkBtGbzQwdIQ2A4Hs/OsgcfR44G1BHZFnalxvUAvfz OYe1rrHHoPVeevntjR31NmsQFQBQbuSJg9YzgWFFGXaXWou2amSU7yYfIt0fXbPmewfA qzOVUKYKc2Xc7PSmOdF1zfzNSa96H6344poUNVSSu0FBoGGGZO6iOLdSB/5RBdIjAbKi 6uagfSyySYjK3fuGlBICeDbpu16fMcyIne0Obl/2YE1j456yYWKaxgGIhpzrxg374S1P /rhw== 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: , Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thierry Reding Use existing parsing helpers to probe a DisplayPort link. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dp.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c index e7602fc39a4a..f9234f66062d 100644 --- a/drivers/gpu/drm/tegra/dp.c +++ b/drivers/gpu/drm/tegra/dp.c @@ -47,21 +47,20 @@ static void drm_dp_link_reset(struct drm_dp_link *link) */ int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link) { - u8 values[3]; + u8 dpcd[DP_RECEIVER_CAP_SIZE]; int err; drm_dp_link_reset(link); - err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values)); + err = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, sizeof(dpcd)); if (err < 0) return err; - link->revision = values[0]; - link->max_rate = drm_dp_bw_code_to_link_rate(values[1]); - link->max_lanes = values[2] & DP_MAX_LANE_COUNT_MASK; + link->revision = dpcd[DP_DPCD_REV]; + link->max_rate = drm_dp_max_link_rate(dpcd); + link->max_lanes = drm_dp_max_lane_count(dpcd); - if (values[2] & DP_ENHANCED_FRAME_CAP) - link->caps.enhanced_framing = true; + link->caps.enhanced_framing = drm_dp_enhanced_frame_cap(dpcd); link->rate = link->max_rate; link->lanes = link->max_lanes;