From patchwork Fri Dec 23 20:56:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Machek X-Patchwork-Id: 9487687 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C9C81600CB for ; Fri, 23 Dec 2016 20:56:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BB96823B3D for ; Fri, 23 Dec 2016 20:56:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B06412434C; Fri, 23 Dec 2016 20:56:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_TVD_MIME_EPI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6D8C223D5E for ; Fri, 23 Dec 2016 20:56:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760798AbcLWU4j (ORCPT ); Fri, 23 Dec 2016 15:56:39 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:40771 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753616AbcLWU4i (ORCPT ); Fri, 23 Dec 2016 15:56:38 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 02D5482414; Fri, 23 Dec 2016 21:56:35 +0100 (CET) Date: Fri, 23 Dec 2016 21:56:35 +0100 From: Pavel Machek To: Sebastian Reichel Cc: Sakari Ailus , ivo.g.dimitrov.75@gmail.com, pali.rohar@gmail.com, linux-media@vger.kernel.org, galak@codeaurora.org, mchehab@osg.samsung.com, linux-kernel@vger.kernel.org Subject: Re: [RFC/PATCH] media: Add video bus switch Message-ID: <20161223205635.GA10155@amd> References: <20161023200355.GA5391@amd> <20161119232943.GF13965@valkosipuli.retiisi.org.uk> <20161214122451.GB27011@amd> <20161222100104.GA30917@amd> <20161222133938.GA30259@amd> <20161222143244.ykza4wdxmop2t7bg@earth> <20161222224226.GB31151@amd> <20161222234028.oxntlek2oy62cjnh@earth> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20161222234028.oxntlek2oy62cjnh@earth> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hi! Ok, this should be closer to something working. (But it does not work, yet). Pavel diff --git a/Documentation/devicetree/bindings/media/video-bus-switch.txt b/Documentation/devicetree/bindings/media/video-bus-switch.txt new file mode 100644 index 0000000..1b9f8e0 --- /dev/null +++ b/Documentation/devicetree/bindings/media/video-bus-switch.txt @@ -0,0 +1,63 @@ +Video Bus Switch Binding +======================== + +This is a binding for a gpio controlled switch for camera interfaces. Such a +device is used on some embedded devices to connect two cameras to the same +interface of a image signal processor. + +Required properties +=================== + +compatible : must contain "video-bus-switch" +switch-gpios : GPIO specifier for the gpio, which can toggle the + selected camera. The GPIO should be configured, so + that a disabled GPIO means, that the first port is + selected. + +Required Port nodes +=================== + +More documentation on these bindings is available in +video-interfaces.txt in the same directory. + +reg : The interface: + 0 - port for image signal processor + 1 - port for first camera sensor + 2 - port for second camera sensor + +Example +======= + +video-bus-switch { + compatible = "video-bus-switch" + switch-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + csi_switch_in: endpoint { + remote-endpoint = <&csi_isp>; + }; + }; + + port@1 { + reg = <1>; + + csi_switch_out1: endpoint { + remote-endpoint = <&csi_cam1>; + }; + }; + + port@2 { + reg = <2>; + + csi_switch_out2: endpoint { + remote-endpoint = <&csi_cam2>; + }; + }; + }; +}; diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 8043290..7189dfd 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -230,6 +230,15 @@ csi_switch_out1: endpoint { remote-endpoint = <&csi_cam1>; + bus-type = <3>; /* CCP2 */ + clock-lanes = <0>; + data-lanes = <1>; + lane-polarity = <0 0>; + clock-inv = <0>; + /* Select strobe = <1> for back camera, <0> for front camera */ + strobe = <1>; + crc = <0>; + }; }; @@ -238,6 +247,15 @@ csi_switch_out2: endpoint { remote-endpoint = <&csi_cam2>; + bus-type = <3>; /* CCP2 */ + clock-lanes = <0>; + data-lanes = <1>; + lane-polarity = <0 0>; + clock-inv = <0>; + /* Select strobe = <1> for back camera, <0> for front camera */ + strobe = <0>; + crc = <0>; + }; }; }; diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 45c69ed..f0aa8cd 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -2024,44 +2054,51 @@ enum isp_of_phy { ISP_OF_PHY_CSIPHY2, }; -static void isp_of_parse_node_csi1(struct device *dev, - struct isp_bus_cfg *buscfg, +void __isp_of_parse_node_csi1(struct device *dev, + struct isp_ccp2_cfg *buscfg, struct v4l2_of_endpoint *vep) { - if (vep->base.port == ISP_OF_PHY_CSIPHY1) - buscfg->interface = ISP_INTERFACE_CCP2B_PHY1; - else - buscfg->interface = ISP_INTERFACE_CCP2B_PHY2; - buscfg->bus.ccp2.lanecfg.clk.pos = vep->bus.mipi_csi1.clock_lane; - buscfg->bus.ccp2.lanecfg.clk.pol = + buscfg->lanecfg.clk.pos = vep->bus.mipi_csi1.clock_lane; + buscfg->lanecfg.clk.pol = vep->bus.mipi_csi1.lane_polarity[0]; dev_dbg(dev, "clock lane polarity %u, pos %u\n", - buscfg->bus.ccp2.lanecfg.clk.pol, - buscfg->bus.ccp2.lanecfg.clk.pos); + buscfg->lanecfg.clk.pol, + buscfg->lanecfg.clk.pos); - buscfg->bus.ccp2.lanecfg.data[0].pos = vep->bus.mipi_csi2.data_lanes[0]; - buscfg->bus.ccp2.lanecfg.data[0].pol = + buscfg->lanecfg.data[0].pos = vep->bus.mipi_csi2.data_lanes[0]; + buscfg->lanecfg.data[0].pol = vep->bus.mipi_csi2.lane_polarities[1]; dev_dbg(dev, "data lane polarity %u, pos %u\n", - buscfg->bus.ccp2.lanecfg.data[0].pol, - buscfg->bus.ccp2.lanecfg.data[0].pos); + buscfg->lanecfg.data[0].pol, + buscfg->lanecfg.data[0].pos); - buscfg->bus.ccp2.strobe_clk_pol = vep->bus.mipi_csi1.clock_inv; - buscfg->bus.ccp2.phy_layer = vep->bus.mipi_csi1.strobe; - buscfg->bus.ccp2.ccp2_mode = vep->bus_type == V4L2_MBUS_CCP2; + buscfg->strobe_clk_pol = vep->bus.mipi_csi1.clock_inv; + buscfg->phy_layer = vep->bus.mipi_csi1.strobe; + buscfg->ccp2_mode = vep->bus_type == V4L2_MBUS_CCP2; dev_dbg(dev, "clock_inv %u strobe %u ccp2 %u\n", - buscfg->bus.ccp2.strobe_clk_pol, - buscfg->bus.ccp2.phy_layer, - buscfg->bus.ccp2.ccp2_mode); + buscfg->strobe_clk_pol, + buscfg->phy_layer, + buscfg->ccp2_mode); /* * FIXME: now we assume the CRC is always there. * Implement a way to obtain this information from the * sensor. Frame descriptors, perhaps? */ - buscfg->bus.ccp2.crc = 1; + buscfg->crc = 1; - buscfg->bus.ccp2.vp_clk_pol = 1; + buscfg->vp_clk_pol = 1; +} + +static void isp_of_parse_node_csi1(struct device *dev, + struct isp_bus_cfg *buscfg, + struct v4l2_of_endpoint *vep) +{ + if (vep->base.port == ISP_OF_PHY_CSIPHY1) + buscfg->interface = ISP_INTERFACE_CCP2B_PHY1; + else + buscfg->interface = ISP_INTERFACE_CCP2B_PHY2; + __isp_of_parse_node_csi1(dev, &buscfg->bus.ccp2, vep); } static void isp_of_parse_node_csi2(struct device *dev, @@ -2099,27 +2136,8 @@ static void isp_of_parse_node_csi2(struct device *dev, buscfg->bus.csi2.crc = 1; } -static int isp_of_parse_node_endpoint(struct device *dev, - struct device_node *node, - struct isp_async_subdev *isd) +static int isp_endpoint_to_buscfg(struct device *dev, struct v4l2_of_endpoint vep, struct isp_bus_cfg *buscfg) { - struct isp_bus_cfg *buscfg; - struct v4l2_of_endpoint vep; - int ret; - - isd->bus = devm_kzalloc(dev, sizeof(*isd->bus), GFP_KERNEL); - if (!isd->bus) - return -ENOMEM; - - buscfg = isd->bus; - - ret = v4l2_of_parse_endpoint(node, &vep); - if (ret) - return ret; - - dev_dbg(dev, "parsing endpoint %s, interface %u\n", node->full_name, - vep.base.port); - switch (vep.base.port) { case ISP_OF_PHY_PARALLEL: buscfg->interface = ISP_INTERFACE_PARALLEL; @@ -2147,10 +2165,35 @@ static int isp_of_parse_node_endpoint(struct device *dev, break; default: + return -1; + } + return 0; +} + +static int isp_of_parse_node_endpoint(struct device *dev, + struct device_node *node, + struct isp_async_subdev *isd) +{ + struct isp_bus_cfg *buscfg; + struct v4l2_of_endpoint vep; + int ret; + + isd->bus = devm_kzalloc(dev, sizeof(*isd->bus), GFP_KERNEL); + if (!isd->bus) + return -ENOMEM; + + buscfg = isd->bus; + + ret = v4l2_of_parse_endpoint(node, &vep); + if (ret) + return ret; + + dev_dbg(dev, "parsing endpoint %s, interface %u\n", node->full_name, + vep.base.port); + + if (isp_endpoint_to_buscfg(dev, vep, buscfg)) dev_warn(dev, "%s: invalid interface %u\n", node->full_name, vep.base.port); - break; - } return 0; } @@ -2262,6 +2305,10 @@ static int isp_of_parse_nodes(struct device *dev, } return notifier->num_subdevs; + +error: + of_node_put(node); + return -EINVAL; } static int isp_subdev_notifier_bound(struct v4l2_async_notifier *async, diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 2d1463a..d5df576 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -23,6 +23,8 @@ #include #include +#include + #include "isp.h" #include "ispreg.h" #include "ispccp2.h" @@ -169,6 +171,7 @@ static int ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]); sensor = media_entity_to_v4l2_subdev(pad->entity); + /* Struct isp_bus_cfg has union inside */ buscfg = &((struct isp_bus_cfg *)sensor->host_priv)->bus.ccp2; @@ -369,6 +372,9 @@ static void ccp2_lcx_config(struct isp_ccp2_device *ccp2, isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, val); } +void __isp_of_parse_node_csi1(struct device *dev, + struct isp_ccp2_cfg *buscfg, + struct v4l2_of_endpoint *vep); /* * ccp2_if_configure - Configure ccp2 with data from sensor * @ccp2: Pointer to ISP CCP2 device @@ -377,7 +383,7 @@ static void ccp2_lcx_config(struct isp_ccp2_device *ccp2, */ static int ccp2_if_configure(struct isp_ccp2_device *ccp2) { - const struct isp_bus_cfg *buscfg; + struct isp_bus_cfg *buscfg; struct v4l2_mbus_framefmt *format; struct media_pad *pad; struct v4l2_subdev *sensor; @@ -390,6 +396,22 @@ static int ccp2_if_configure(struct isp_ccp2_device *ccp2) sensor = media_entity_to_v4l2_subdev(pad->entity); buscfg = sensor->host_priv; + { + struct v4l2_subdev *subdev2; + struct v4l2_of_endpoint vep; + + subdev2 = media_entity_to_v4l2_subdev(pad->entity); + + printk("if_configure... subdev %p\n", subdev2); + ret = v4l2_subdev_call(subdev2, video, g_endpoint_config, &vep); + printk("if_configure ret %d\n", ret); + if (ret == 0) { + printk("Success: have configuration\n"); + __isp_of_parse_node_csi1(NULL, &buscfg->bus.ccp2, &vep); + printk("Configured ok?\n"); + } + } + ret = ccp2_phyif_config(ccp2, &buscfg->bus.ccp2); if (ret < 0) return ret; diff --git a/drivers/media/platform/video-bus-switch.c b/drivers/media/platform/video-bus-switch.c index 1a5d944..f599e08 100644 --- a/drivers/media/platform/video-bus-switch.c +++ b/drivers/media/platform/video-bus-switch.c @@ -2,6 +2,7 @@ * Generic driver for video bus switches * * Copyright (C) 2015 Sebastian Reichel + * Copyright (C) 2016 Pavel Machek * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -33,9 +34,9 @@ #define CSI_SWITCH_PORTS 3 enum vbs_state { - CSI_SWITCH_DISABLED, - CSI_SWITCH_PORT_1, - CSI_SWITCH_PORT_2, + CSI_SWITCH_DISABLED = 0, + CSI_SWITCH_PORT_1 = 1, + CSI_SWITCH_PORT_2 = 2, }; struct vbs_src_pads { @@ -49,6 +50,7 @@ struct vbs_data { struct v4l2_async_notifier notifier; struct media_pad pads[CSI_SWITCH_PORTS]; struct vbs_src_pads src_pads[CSI_SWITCH_PORTS]; + struct v4l2_of_endpoint vep[CSI_SWITCH_PORTS]; enum vbs_state state; }; @@ -107,6 +109,7 @@ static int vbs_of_parse_nodes(struct device *dev, struct vbs_data *pdata) } ssd->asd.match_type = V4L2_ASYNC_MATCH_OF; + pdata->vep[notifier->num_subdevs] = vep; notifier->num_subdevs++; } @@ -253,6 +256,19 @@ static int vbs_s_stream(struct v4l2_subdev *sd, int enable) return v4l2_subdev_call(subdev, video, s_stream, enable); } +static int vbs_g_endpoint_config(struct v4l2_subdev *sd, struct v4l2_of_endpoint *cfg) +{ + struct vbs_data *pdata = v4l2_get_subdevdata(sd); + printk("vbs_g_endpoint_config...\n"); + printk("active port is %d\n", pdata->state); + *cfg = pdata->vep[pdata->state]; + + return -EINVAL; + + return 0; +} + + static const struct v4l2_subdev_internal_ops vbs_internal_ops = { .registered = &vbs_registered, }; @@ -265,6 +281,7 @@ static const struct media_entity_operations vbs_media_ops = { /* subdev video operations */ static const struct v4l2_subdev_video_ops vbs_video_ops = { .s_stream = vbs_s_stream, + .g_endpoint_config = vbs_g_endpoint_config, }; static const struct v4l2_subdev_ops vbs_ops = { diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index cf778c5..448dbb5 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -25,6 +25,7 @@ #include #include #include +#include /* generic v4l2_device notify callback notification values */ #define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32) @@ -415,6 +416,8 @@ struct v4l2_subdev_video_ops { const struct v4l2_mbus_config *cfg); int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf, unsigned int *size); + int (*g_endpoint_config)(struct v4l2_subdev *sd, + struct v4l2_of_endpoint *cfg); }; /**