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Fri, 6 Dec 2024 04:32:35 GMT Received: from abhinavk-linux1.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 5 Dec 2024 20:32:34 -0800 From: Abhinav Kumar Date: Thu, 5 Dec 2024 20:31:50 -0800 Subject: [PATCH 19/45] drm/msm/dp: add support to program mst support in mainlink Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20241205-dp_mst-v1-19-f8618d42a99a@quicinc.com> References: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> In-Reply-To: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> To: Rob Clark , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , "Simona Vetter" , Stephen Boyd , "Chandan Uddaraju" , Guenter Roeck , Kuogee Hsieh , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Vara Reddy , Rob Clark , Tanmay Shah , , , , , , Jessica Zhang , Laurent Pinchart , Abhinav Kumar X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/dp/dp_catalog.c | 17 +++++++++++++++++ drivers/gpu/drm/msm/dp/dp_catalog.h | 1 + drivers/gpu/drm/msm/dp/dp_ctrl.c | 4 ++++ 3 files changed, 22 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c index 88d6262a972ef2d30c467ef5ff5c58ef3299ae7d..bdc66e5cab640c351708ba1a1bc3bca21784df6e 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.c +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c @@ -417,6 +417,23 @@ void msm_dp_catalog_ctrl_psr_mainlink_enable(struct msm_dp_catalog *msm_dp_catal msm_dp_write_link(catalog, REG_DP_MAINLINK_CTRL, val); } +void msm_dp_catalog_mst_config(struct msm_dp_catalog *msm_dp_catalog, bool enable) +{ + struct msm_dp_catalog_private *catalog = container_of(msm_dp_catalog, + struct msm_dp_catalog_private, + msm_dp_catalog); + + u32 mainlink_ctrl; + + mainlink_ctrl = msm_dp_read_link(catalog, REG_DP_MAINLINK_CTRL); + if (enable) + mainlink_ctrl |= (0x04000100); + else + mainlink_ctrl &= ~(0x04000100); + + msm_dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl); +} + void msm_dp_catalog_ctrl_mainlink_ctrl(struct msm_dp_catalog *msm_dp_catalog, bool enable) { diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h index c91c52d40209b8bcb63db9c0256f6ef721dace8a..07284f484e2861aeae12b115cd05a94afed1c9cb 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.h +++ b/drivers/gpu/drm/msm/dp/dp_catalog.h @@ -138,5 +138,6 @@ void msm_dp_catalog_audio_sfe_level(struct msm_dp_catalog *catalog, u32 safe_to_ /* DP MST APIs */ void msm_dp_catalog_trigger_act(struct msm_dp_catalog *dp_catalog); bool msm_dp_catalog_read_act_complete_sts(struct msm_dp_catalog *dp_catalog); +void msm_dp_catalog_mst_config(struct msm_dp_catalog *dp_catalog, bool enable); #endif /* _DP_CATALOG_H_ */ diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 2bfe2aac3c02b02b12713dbd98e79ed4a75b85d0..3839f1e8e1aeb2a14a7f59c546693141a0df6323 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -186,6 +186,9 @@ static void msm_dp_ctrl_configure_source_params(struct msm_dp_ctrl_private *ctrl msm_dp_catalog_ctrl_lane_mapping(ctrl->catalog); msm_dp_catalog_setup_peripheral_flush(ctrl->catalog); + if (ctrl->mst_active) + msm_dp_catalog_mst_config(ctrl->catalog, true); + msm_dp_ctrl_config_ctrl(ctrl, msm_dp_panel); tb = msm_dp_link_get_test_bits_depth(ctrl->link, @@ -2132,6 +2135,7 @@ void msm_dp_ctrl_off_link(struct msm_dp_ctrl *msm_dp_ctrl) phy = ctrl->phy; msm_dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false); + msm_dp_catalog_mst_config(ctrl->catalog, false); ctrl->mst_active = false;