From patchwork Tue Mar 26 16:39:56 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sylwester Nawrocki/Kernel \\(PLT\\) /SRPOL/Staff Engineer/Samsung Electronics" X-Patchwork-Id: 2340861 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 1A0A6400E6 for ; Tue, 26 Mar 2013 16:40:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965815Ab3CZQkc (ORCPT ); Tue, 26 Mar 2013 12:40:32 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:16921 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965789Ab3CZQk3 (ORCPT ); Tue, 26 Mar 2013 12:40:29 -0400 Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MKA002FV0Z4U460@mailout2.samsung.com>; Wed, 27 Mar 2013 01:40:28 +0900 (KST) X-AuditID: cbfee61a-b7fa86d0000045ae-07-5151cf7c1916 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 35.73.17838.C7FC1515; Wed, 27 Mar 2013 01:40:28 +0900 (KST) Received: from amdc1344.digital.local ([106.116.147.32]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MKA009SI0YOUG90@mmp2.samsung.com>; Wed, 27 Mar 2013 01:40:28 +0900 (KST) From: Sylwester Nawrocki To: linux-media@vger.kernel.org Cc: kyungmin.park@samsung.com, myungjoo.ham@samsung.com, dh09.lee@samsung.com, shaik.samsung@gmail.com, arun.kk@samsung.com, a.hajda@samsung.com, linux-samsung-soc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, Sylwester Nawrocki Subject: [PATCH v5 4/6] s5p-fimc: Add device tree support for the media device driver Date: Tue, 26 Mar 2013 17:39:56 +0100 Message-id: <1364315998-19372-5-git-send-email-s.nawrocki@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1364315998-19372-1-git-send-email-s.nawrocki@samsung.com> References: <1364315998-19372-1-git-send-email-s.nawrocki@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprDLMWRmVeSWpSXmKPExsVy+t9jQd2a84GBBtMeq1vcWneO1eLjqdus FgdmP2S1uH7ezuJs0xt2i54NW1ktZpzfx2Rxu3EFm8XhN+2sFut2TmJ34PLYOesuu8f5GQsZ Pfq2rGL0+LxJLoAlissmJTUnsyy1SN8ugSvj6o4F7AVLnCr+n/vJ0sD4xqyLkZNDQsBE4uTd X8wQtpjEhXvr2boYuTiEBKYzSrxdMZEZwulgknh68ScTSBWbgKFE79E+RhBbREBe4knvDbAO ZoFuJomjXy+xdzFycAgLhEtsXiUPUsMioCpx7sEWFhCbV8BN4kLPMyaQEgkBBYk5k2xAwpwC 7hLPFs4BO0IIqKRhazv7BEbeBYwMqxhFUwuSC4qT0nMN9YoTc4tL89L1kvNzNzGCw+yZ1A7G lQ0WhxgFOBiVeHg3BAcECrEmlhVX5h5ilOBgVhLhFdwYGCjEm5JYWZValB9fVJqTWnyIUZqD RUmc90CrdaCQQHpiSWp2ampBahFMlomDU6qBceuPjJS9P5Z4CfRy71oZGH7lpmXpr7cNb59c vSp/3Wvvs5sL+S4Z3TVKZklZ8XPB05yFG4QOas3hrnjvE16cJxnbdFJ35oHylV4yy77zvDJr nLP6x+JPv3hMhQ5fbpV96WXT8/XY//ltTTGHr/Y+faty5mnJ9ylzH65bvUDX966HTnDjdFYH bwMlluKMREMt5qLiRABJRpG8LwIAAA== Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This patch adds changes required for the main camera media device driver corresponding to the top level 'camera' device node. The drivers of devices corresponding to child nodes of the 'camera' node are looked up and and registered as sub-devices to the top level driver. The main driver's probing is deferred if any of the sub-device drivers is not yet initialized and ready. Signed-off-by: Sylwester Nawrocki Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park --- Changes since v5: - Do not register FIMC with WB input to the camera driver. FIMC devices with LCD Writeback input and "samsung,lcd-wb" property in their device tree node are handled by the DRM image post-processing driver and registration of these devices to the camera driver is skipped. --- drivers/media/platform/s5p-fimc/fimc-core.c | 1 - drivers/media/platform/s5p-fimc/fimc-mdevice.c | 108 ++++++++++++++++++++---- drivers/media/platform/s5p-fimc/fimc-mdevice.h | 5 ++ include/media/s5p_fimc.h | 1 + 4 files changed, 98 insertions(+), 17 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-core.c b/drivers/media/platform/s5p-fimc/fimc-core.c index d39e47a..6a8098c 100644 --- a/drivers/media/platform/s5p-fimc/fimc-core.c +++ b/drivers/media/platform/s5p-fimc/fimc-core.c @@ -1281,7 +1281,6 @@ static const struct platform_device_id fimc_driver_ids[] = { }, { }, }; -MODULE_DEVICE_TABLE(platform, fimc_driver_ids); static const struct of_device_id fimc_of_match[] = { { diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c index cd38d70..b62011d 100644 --- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c @@ -17,11 +17,16 @@ #include #include #include +#include +#include +#include +#include #include #include #include #include #include +#include #include #include @@ -264,6 +269,21 @@ static void fimc_md_unregister_sensor(struct v4l2_subdev *sd) i2c_put_adapter(adapter); } +#ifdef CONFIG_OF +static int __of_get_csis_id(struct device_node *np) +{ + u32 reg = 0; + + np = of_get_child_by_name(np, "port"); + if (!np) + return -EINVAL; + of_property_read_u32(np, "reg", ®); + return reg - FIMC_INPUT_MIPI_CSI2_0; +} +#else +#define __of_get_csis_id(np) (-ENOSYS) +#endif + static int fimc_md_register_sensor_entities(struct fimc_md *fmd) { struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; @@ -368,13 +388,13 @@ static int register_csis_entity(struct fimc_md *fmd, struct device_node *node = pdev->dev.of_node; int id, ret; - id = node ? of_alias_get_id(node, "csis") : max(0, pdev->id); + id = node ? __of_get_csis_id(node) : max(0, pdev->id); - if (WARN_ON(id >= CSIS_MAX_ENTITIES || fmd->csis[id].sd)) - return -EBUSY; + if (WARN_ON(id < 0 || id >= CSIS_MAX_ENTITIES)) + return -ENOENT; - if (WARN_ON(id >= CSIS_MAX_ENTITIES)) - return 0; + if (WARN_ON(fmd->csis[id].sd)) + return -EBUSY; sd->grp_id = GRP_ID_CSIS; ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); @@ -457,6 +477,45 @@ static int fimc_md_pdev_match(struct device *dev, void *data) return 0; } +/* Register FIMC, FIMC-LITE and CSIS media entities */ +#ifdef CONFIG_OF +static int fimc_md_register_of_platform_entities(struct fimc_md *fmd, + struct device_node *parent) +{ + struct device_node *node; + int ret = 0; + + for_each_available_child_of_node(parent, node) { + struct platform_device *pdev; + int plat_entity = -1; + + pdev = of_find_device_by_node(node); + if (!pdev) + continue; + + /* If driver of any entity isn't ready try all again later. */ + if (!strcmp(node->name, CSIS_OF_NODE_NAME)) + plat_entity = IDX_CSIS; + else if (!strcmp(node->name, FIMC_LITE_OF_NODE_NAME)) + plat_entity = IDX_FLITE; + else if (!strcmp(node->name, FIMC_OF_NODE_NAME) && + !of_property_read_bool(node, "samsung,lcd-wb")) + plat_entity = IDX_FIMC; + + if (plat_entity >= 0) + ret = fimc_md_register_platform_entity(fmd, pdev, + plat_entity); + put_device(&pdev->dev); + if (ret < 0) + break; + } + + return ret; +} +#else +#define fimc_md_register_of_platform_entities(fmd, node) (-ENOSYS) +#endif + static void fimc_md_unregister_entities(struct fimc_md *fmd) { int i; @@ -928,11 +987,12 @@ static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO, static int fimc_md_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct v4l2_device *v4l2_dev; struct fimc_md *fmd; int ret; - fmd = devm_kzalloc(&pdev->dev, sizeof(*fmd), GFP_KERNEL); + fmd = devm_kzalloc(dev, sizeof(*fmd), GFP_KERNEL); if (!fmd) return -ENOMEM; @@ -942,15 +1002,14 @@ static int fimc_md_probe(struct platform_device *pdev) strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC", sizeof(fmd->media_dev.model)); fmd->media_dev.link_notify = fimc_md_link_notify; - fmd->media_dev.dev = &pdev->dev; + fmd->media_dev.dev = dev; v4l2_dev = &fmd->v4l2_dev; v4l2_dev->mdev = &fmd->media_dev; v4l2_dev->notify = fimc_sensor_notify; - snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s", - dev_name(&pdev->dev)); + strlcpy(v4l2_dev->name, "s5p-fimc-md", sizeof(v4l2_dev->name)); - ret = v4l2_device_register(&pdev->dev, &fmd->v4l2_dev); + ret = v4l2_device_register(dev, &fmd->v4l2_dev); if (ret < 0) { v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); return ret; @@ -964,21 +1023,25 @@ static int fimc_md_probe(struct platform_device *pdev) if (ret) goto err_clk; - fmd->user_subdev_api = false; + fmd->user_subdev_api = (dev->of_node != NULL); /* Protect the media graph while we're registering entities */ mutex_lock(&fmd->media_dev.graph_mutex); - ret = bus_for_each_dev(&platform_bus_type, NULL, fmd, - fimc_md_pdev_match); + if (dev->of_node) + ret = fimc_md_register_of_platform_entities(fmd, dev->of_node); + else + ret = bus_for_each_dev(&platform_bus_type, NULL, fmd, + fimc_md_pdev_match); if (ret) goto err_unlock; - if (pdev->dev.platform_data) { + if (dev->platform_data) { ret = fimc_md_register_sensor_entities(fmd); if (ret) goto err_unlock; } + ret = fimc_md_create_links(fmd); if (ret) goto err_unlock; @@ -1018,12 +1081,25 @@ static int fimc_md_remove(struct platform_device *pdev) return 0; } +static struct platform_device_id fimc_driver_ids[] __always_unused = { + { .name = "s5p-fimc-md" }, + { }, +}; +MODULE_DEVICE_TABLE(platform, fimc_driver_ids); + +static const struct of_device_id fimc_md_of_match[] = { + { .compatible = "samsung,fimc" }, + { }, +}; +MODULE_DEVICE_TABLE(of, fimc_md_of_match); + static struct platform_driver fimc_md_driver = { .probe = fimc_md_probe, .remove = fimc_md_remove, .driver = { - .name = "s5p-fimc-md", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(fimc_md_of_match), + .name = "s5p-fimc-md", + .owner = THIS_MODULE, } }; diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.h b/drivers/media/platform/s5p-fimc/fimc-mdevice.h index 06b0d82..b6ceb59 100644 --- a/drivers/media/platform/s5p-fimc/fimc-mdevice.h +++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.h @@ -21,6 +21,11 @@ #include "fimc-lite.h" #include "mipi-csis.h" +#define FIMC_OF_NODE_NAME "fimc" +#define FIMC_LITE_OF_NODE_NAME "fimc-lite" +#define FIMC_IS_OF_NODE_NAME "fimc-is" +#define CSIS_OF_NODE_NAME "csis" + /* Group IDs of sensor, MIPI-CSIS, FIMC-LITE and the writeback subdevs. */ #define GRP_ID_SENSOR (1 << 8) #define GRP_ID_FIMC_IS_SENSOR (1 << 9) diff --git a/include/media/s5p_fimc.h b/include/media/s5p_fimc.h index d6dbb79..e2c5989 100644 --- a/include/media/s5p_fimc.h +++ b/include/media/s5p_fimc.h @@ -94,6 +94,7 @@ enum fimc_subdev_index { IDX_SENSOR, IDX_CSIS, IDX_FLITE, + IDX_IS_ISP, IDX_FIMC, IDX_MAX, };