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AJvYcCUWIL27NvQnPSmF8+4AEAQPHHS31n6wF2QVTpu8Wsdip2QsU8UgUov3REWN1ht+DaOmwrWrPYgeWDKt8hdUpLISKEM=@vger.kernel.org, AJvYcCXyGARpRZ4+bOXPNpAj+RtIzefwrz78EqTTAsRC8QaWcppt0p12hqJj3nWwL3/Y7zw2D93XwxFXwdkCH9w=@vger.kernel.org X-Gm-Message-State: AOJu0YzVDeL38fdzZliCUiks3jj5gyOk8+9yALHNtB1anjFnRCiRpeC6 3bexJoVOaskVgui36o1xeWbOaOu0GTxNCB+XuQzbNU5m/1aOjqk1 X-Google-Smtp-Source: AGHT+IEBATDsW2UtMPL1sOLSbyFPMYv4uTIYnh8/ihZ1yE2M2iIHdfCI2vb1325KAmc2aIf1h7Blnw== X-Received: by 2002:a05:6402:1d50:b0:5c2:6b31:29e0 with SMTP id 4fb4d7f45d1cf-5c3c1fa0603mr10397130a12.17.1725644425812; Fri, 06 Sep 2024 10:40:25 -0700 (PDT) Received: from prasmi.home ([2a00:23c8:2500:a01:2595:4364:d152:dff3]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5c3cc697fedsm2623557a12.64.2024.09.06.10.40.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Sep 2024 10:40:25 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Sakari Ailus , Laurent Pinchart , Mauro Carvalho Chehab , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH 2/3] media: platform: rzg2l-cru: rzg2l-video: Retrieve virtual channel information Date: Fri, 6 Sep 2024 18:39:46 +0100 Message-Id: <20240906173947.282402-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240906173947.282402-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20240906173947.282402-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar The RZ/G2L CRU needs to configure the ICnMC.VCSEL bits to specify which virtual channel should be processed from the four available VCs. To retrieve this information from the connected subdevice, the .get_frame_desc() function is called. Signed-off-by: Lad Prabhakar Reviewed-by: Laurent Pinchart --- .../platform/renesas/rzg2l-cru/rzg2l-video.c | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c index bbf4674f888d..6101a070e785 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c @@ -433,12 +433,41 @@ void rzg2l_cru_stop_image_processing(struct rzg2l_cru_dev *cru) spin_unlock_irqrestore(&cru->qlock, flags); } +static int rzg2l_cru_get_virtual_channel(struct rzg2l_cru_dev *cru) +{ + struct v4l2_mbus_frame_desc fd = { }; + struct media_pad *pad; + int ret; + + pad = media_pad_remote_pad_unique(&cru->ip.pads[1]); + if (IS_ERR(pad)) + return PTR_ERR(pad); + + ret = v4l2_subdev_call(cru->ip.remote, pad, get_frame_desc, + pad->index, &fd); + if (ret < 0 && ret != -ENOIOCTLCMD) + return ret; + /* If remote subdev does not implement .get_frame_desc default to VC0. */ + if (ret == -ENOIOCTLCMD) + return 0; + + if (fd.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2) + return -EINVAL; + + return fd.num_entries ? fd.entry[0].bus.csi2.vc : 0; +} + int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru) { struct v4l2_mbus_framefmt *fmt = rzg2l_cru_ip_get_src_fmt(cru); unsigned long flags; int ret; + ret = rzg2l_cru_get_virtual_channel(cru); + if (ret < 0) + return ret; + cru->csi.channel = ret; + spin_lock_irqsave(&cru->qlock, flags); /* Select a video input */