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(unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 227a3f1de; Thu, 11 Sep 2025 19:28:03 +0800 (GMT+08:00) From: Damon Ding To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, dmitry.baryshkov@linaro.org, l.stach@pengutronix.de, dianders@chromium.org, m.szyprowski@samsung.com, andy.yan@rock-chips.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Damon Ding Subject: [PATCH v2 1/4] drm/bridge: analogix_dp: Apply DP helper API drm_dp_dpcd_read_link_status() Date: Thu, 11 Sep 2025 19:27:53 +0800 Message-Id: <20250911112756.4008435-2-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250911112756.4008435-1-damon.ding@rock-chips.com> References: <20250911112756.4008435-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-HM-Tid: 0a993888586b03a3kunmb42177f792e2f9 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGh5LSFZJSUhJHUpPQh1MSElWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=gaBeiJIos+p3tCjOoEv8swg4LGf7QQLFpl8Zkbrv9S1eXSfMvDxk5IOT8cj3egbHHFLNiXgC4xIkXwKz3wY457qLOECfLl8IEuJemNB7fhk9wbXa2pAywpr0pUYH68Vqqu1L2APHxpRSZqo0JcdX50E2UAAi5eCkYeR66wMT3GY=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=d0kIzp1y0sLQmYMhHbvsjRYJBfu9ixHJpYQ97wF09ak=; h=date:mime-version:subject:message-id:from; Content-Type: text/plain; charset="utf-8" Use existing DP helper API to read link status related DPCDs. Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/g= pu/drm/bridge/analogix/analogix_dp_core.c index ed35e567d117..6a3f3fb0ec0a 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -388,13 +388,13 @@ static int analogix_dp_process_clock_recovery(struct = analogix_dp_device *dp) { int lane, lane_count, retval; u8 voltage_swing, pre_emphasis, training_lane; - u8 link_status[2], adjust_request[2]; + u8 link_status[DP_LINK_STATUS_SIZE], adjust_request[2]; =20 usleep_range(100, 101); =20 lane_count =3D dp->link_train.lane_count; =20 - retval =3D drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status, 2); + retval =3D drm_dp_dpcd_read_link_status(&dp->aux, link_status); if (retval < 0) return retval; =20 @@ -454,13 +454,13 @@ static int analogix_dp_process_equalizer_training(str= uct analogix_dp_device *dp) { int lane_count, retval; u32 reg; - u8 link_align, link_status[2], adjust_request[2]; + u8 link_align, link_status[DP_LINK_STATUS_SIZE], adjust_request[2]; =20 usleep_range(400, 401); =20 lane_count =3D dp->link_train.lane_count; =20 - retval =3D drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status, 2); + retval =3D drm_dp_dpcd_read_link_status(&dp->aux, link_status); if (retval < 0) return retval; =20 @@ -619,7 +619,7 @@ static int analogix_dp_full_link_train(struct analogix_= dp_device *dp, static int analogix_dp_fast_link_train(struct analogix_dp_device *dp) { int ret; - u8 link_align, link_status[2]; + u8 link_align, link_status[DP_LINK_STATUS_SIZE]; =20 analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate); ret =3D analogix_dp_wait_pll_locked(dp); @@ -661,8 +661,7 @@ static int analogix_dp_fast_link_train(struct analogix_= dp_device *dp) return ret; } =20 - ret =3D drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status, - 2); + ret =3D drm_dp_dpcd_read_link_status(&dp->aux, link_status); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "Read link status failed %d\n", ret); --=20 2.34.1