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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46fab3e3520sm62462375e9.2.2025.10.10.05.29.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Oct 2025 05:29:38 -0700 (PDT) Message-ID: <7c563a39-cdec-487b-afc5-c88d94475aad@linaro.org> Date: Fri, 10 Oct 2025 13:29:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 07/17] media: rockchip: add driver for the rockchip camera interface To: michael.riesch@collabora.com, Mehdi Djait , Maxime Chevallier , =?UTF-8?Q?Th=C3=A9o_Lebrun?= , Thomas Petazzoni , Gerald Loacker , Bryan O'Donoghue , Markus Elfring , Laurent Pinchart , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Kever Yang , Nicolas Dufresne , Sebastian Reichel , Collabora Kernel Team , Paul Kocialkowski , Alexander Shiyan , Val Packett , Rob Herring , Philipp Zabel , Sakari Ailus Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20240220-rk3568-vicap-v11-0-af0eada54e5d@collabora.com> <20240220-rk3568-vicap-v11-7-af0eada54e5d@collabora.com> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <20240220-rk3568-vicap-v11-7-af0eada54e5d@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251010_052941_037633_084CE97A X-CRM114-Status: GOOD ( 31.48 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org On 17/09/2025 16:38, Michael Riesch via B4 Relay wrote: > From: Michael Riesch > > Add the skeleton for a media controller centric V4L2 driver for the > Rockchip Camera Interface (CIF). > The skeleton features support for the PX30 Video Input Processor (VIP) > and the RK3568 Video Capture (VICAP) unit. > > Signed-off-by: Michael Riesch > --- > MAINTAINERS | 1 + > drivers/media/platform/rockchip/Kconfig | 1 + > drivers/media/platform/rockchip/Makefile | 1 + > drivers/media/platform/rockchip/rkcif/Kconfig | 18 ++ > drivers/media/platform/rockchip/rkcif/Makefile | 4 + > .../media/platform/rockchip/rkcif/rkcif-common.h | 54 +++++ > drivers/media/platform/rockchip/rkcif/rkcif-dev.c | 260 +++++++++++++++++++++ > 7 files changed, 339 insertions(+) > > diff --git a/MAINTAINERS b/MAINTAINERS > index 4a18421a53a1..6c023dc54ece 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -21770,6 +21770,7 @@ S: Maintained > F: Documentation/admin-guide/media/rkcif* > F: Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml > F: Documentation/devicetree/bindings/media/rockchip,rk3568-vicap.yaml > +F: drivers/media/platform/rockchip/rkcif/ > > ROCKCHIP CRYPTO DRIVERS > M: Corentin Labbe > diff --git a/drivers/media/platform/rockchip/Kconfig b/drivers/media/platform/rockchip/Kconfig > index 2f6f77afecfc..54b698c4cd2c 100644 > --- a/drivers/media/platform/rockchip/Kconfig > +++ b/drivers/media/platform/rockchip/Kconfig > @@ -3,6 +3,7 @@ > comment "Rockchip media platform drivers" > > source "drivers/media/platform/rockchip/rga/Kconfig" > +source "drivers/media/platform/rockchip/rkcif/Kconfig" > source "drivers/media/platform/rockchip/rkcsi/Kconfig" > source "drivers/media/platform/rockchip/rkisp1/Kconfig" > source "drivers/media/platform/rockchip/rkvdec/Kconfig" > diff --git a/drivers/media/platform/rockchip/Makefile b/drivers/media/platform/rockchip/Makefile > index 33e24b47735c..522a7d3e30b0 100644 > --- a/drivers/media/platform/rockchip/Makefile > +++ b/drivers/media/platform/rockchip/Makefile > @@ -1,5 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0-only > obj-y += rga/ > +obj-y += rkcif/ > obj-y += rkcsi/ > obj-y += rkisp1/ > obj-y += rkvdec/ > diff --git a/drivers/media/platform/rockchip/rkcif/Kconfig b/drivers/media/platform/rockchip/rkcif/Kconfig > new file mode 100644 > index 000000000000..efd82ac35bd8 > --- /dev/null > +++ b/drivers/media/platform/rockchip/rkcif/Kconfig > @@ -0,0 +1,18 @@ > +config VIDEO_ROCKCHIP_CIF > + tristate "Rockchip Camera Interface (CIF)" > + depends on VIDEO_DEV > + depends on ARCH_ROCKCHIP || COMPILE_TEST > + depends on V4L_PLATFORM_DRIVERS > + depends on PM && COMMON_CLK > + select MEDIA_CONTROLLER > + select VIDEOBUF2_DMA_CONTIG > + select V4L2_FWNODE > + select VIDEO_V4L2_SUBDEV_API > + help > + This is a driver for Rockchip Camera Interface (CIF). It is featured > + in many Rockchips SoCs in different variations, such as the PX30 > + Video Input Processor (VIP, one Digital Video Port (DVP)) or the > + RK3568 Video Capture (VICAP, one DVP, one MIPI CSI-2 receiver) unit. > + > + To compile this driver as a module, choose M here: the module > + will be called rockchip-cif. > diff --git a/drivers/media/platform/rockchip/rkcif/Makefile b/drivers/media/platform/rockchip/rkcif/Makefile > new file mode 100644 > index 000000000000..c6837ed2f65c > --- /dev/null > +++ b/drivers/media/platform/rockchip/rkcif/Makefile > @@ -0,0 +1,4 @@ > +# SPDX-License-Identifier: GPL-2.0 > +obj-$(CONFIG_VIDEO_ROCKCHIP_CIF) += rockchip-cif.o > + > +rockchip-cif-objs += rkcif-dev.o > diff --git a/drivers/media/platform/rockchip/rkcif/rkcif-common.h b/drivers/media/platform/rockchip/rkcif/rkcif-common.h > new file mode 100644 > index 000000000000..43a9390526d8 > --- /dev/null > +++ b/drivers/media/platform/rockchip/rkcif/rkcif-common.h > @@ -0,0 +1,54 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Rockchip Camera Interface (CIF) Driver > + * > + * Copyright (C) 2018 Rockchip Electronics Co., Ltd. > + * Copyright (C) 2023 Mehdi Djait > + * Copyright (C) 2025 Michael Riesch > + */ > + > +#ifndef _RKCIF_COMMON_H > +#define _RKCIF_COMMON_H > + > +#include > +#include > +#include > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#define RKCIF_DRIVER_NAME "rockchip-cif" > +#define RKCIF_CLK_MAX 4 > + > +struct rkcif_remote { > + struct v4l2_async_connection async_conn; > + struct v4l2_subdev *sd; > +}; > + > +struct rkcif_match_data { > + const char *const *clks; > + unsigned int clks_num; > +}; > + > +struct rkcif_device { > + struct device *dev; > + > + const struct rkcif_match_data *match_data; > + struct clk_bulk_data clks[RKCIF_CLK_MAX]; > + unsigned int clks_num; > + struct regmap *grf; > + struct reset_control *reset; > + void __iomem *base_addr; > + > + struct media_device media_dev; > + struct v4l2_device v4l2_dev; > + struct v4l2_async_notifier notifier; > +}; > + > +#endif > diff --git a/drivers/media/platform/rockchip/rkcif/rkcif-dev.c b/drivers/media/platform/rockchip/rkcif/rkcif-dev.c > new file mode 100644 > index 000000000000..a8514e7d3249 > --- /dev/null > +++ b/drivers/media/platform/rockchip/rkcif/rkcif-dev.c > @@ -0,0 +1,260 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Rockchip Camera Interface (CIF) Driver > + * > + * Copyright (C) 2018 Rockchip Electronics Co., Ltd. > + * Copyright (C) 2020 Maxime Chevallier > + * Copyright (C) 2023 Mehdi Djait > + * Copyright (C) 2025 Michael Riesch > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > +#include > + > +#include "rkcif-common.h" > + > +static const char *const px30_vip_clks[] = { > + "aclk", > + "hclk", > + "pclk", > +}; > + > +static const struct rkcif_match_data px30_vip_match_data = { > + .clks = px30_vip_clks, > + .clks_num = ARRAY_SIZE(px30_vip_clks), > +}; > + > +static const char *const rk3568_vicap_clks[] = { > + "aclk", > + "hclk", > + "dclk", > + "iclk", > +}; > + > +static const struct rkcif_match_data rk3568_vicap_match_data = { > + .clks = rk3568_vicap_clks, > + .clks_num = ARRAY_SIZE(rk3568_vicap_clks), > +}; > + > +static const struct of_device_id rkcif_plat_of_match[] = { > + { > + .compatible = "rockchip,px30-vip", > + .data = &px30_vip_match_data, > + }, > + { > + .compatible = "rockchip,rk3568-vicap", > + .data = &rk3568_vicap_match_data, > + }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, rkcif_plat_of_match); > + > +static int rkcif_register(struct rkcif_device *rkcif) > +{ > + return 0; > +} > + > +static void rkcif_unregister(struct rkcif_device *rkcif) > +{ > +} > + > +static int rkcif_notifier_bound(struct v4l2_async_notifier *notifier, > + struct v4l2_subdev *sd, > + struct v4l2_async_connection *asd) > +{ > + struct rkcif_remote *remote = > + container_of(asd, struct rkcif_remote, async_conn); > + > + remote->sd = sd; > + > + return 0; > +} > + > +static int rkcif_notifier_complete(struct v4l2_async_notifier *notifier) > +{ > + struct rkcif_device *rkcif = > + container_of(notifier, struct rkcif_device, notifier); > + > + return v4l2_device_register_subdev_nodes(&rkcif->v4l2_dev); > +} > + > +static const struct v4l2_async_notifier_operations rkcif_notifier_ops = { > + .bound = rkcif_notifier_bound, > + .complete = rkcif_notifier_complete, > +}; > + > +static irqreturn_t rkcif_isr(int irq, void *ctx) > +{ > + irqreturn_t ret = IRQ_NONE; > + > + return ret; > +} > + > +static int rkcif_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct rkcif_device *rkcif; > + int ret, irq; > + > + rkcif = devm_kzalloc(dev, sizeof(*rkcif), GFP_KERNEL); > + if (!rkcif) > + return -ENOMEM; > + > + rkcif->match_data = of_device_get_match_data(dev); > + if (!rkcif->match_data) > + return -ENODEV; > + > + dev_set_drvdata(dev, rkcif); > + rkcif->dev = dev; > + > + rkcif->base_addr = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(rkcif->base_addr)) > + return PTR_ERR(rkcif->base_addr); > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return irq; > + > + ret = devm_request_irq(dev, irq, rkcif_isr, IRQF_SHARED, > + dev_driver_string(dev), dev); > + if (ret) > + return dev_err_probe(dev, ret, "failed to request irq\n"); > + > + if (rkcif->match_data->clks_num > RKCIF_CLK_MAX) > + return dev_err_probe(dev, -EINVAL, "invalid number of clocks\n"); \n > + rkcif->clks_num = rkcif->match_data->clks_num; \n ? > + for (unsigned int i = 0; i < rkcif->clks_num; i++) > + rkcif->clks[i].id = rkcif->match_data->clks[i]; > + ret = devm_clk_bulk_get(dev, rkcif->clks_num, rkcif->clks); > + if (ret) > + return dev_err_probe(dev, ret, "failed to get clocks\n"); > + > + rkcif->reset = devm_reset_control_array_get_exclusive(dev); > + if (IS_ERR(rkcif->reset)) > + return PTR_ERR(rkcif->reset); > + > + rkcif->grf = syscon_regmap_lookup_by_phandle(dev->of_node, > + "rockchip,grf"); > + if (IS_ERR(rkcif->grf)) > + rkcif->grf = NULL; > + > + pm_runtime_enable(&pdev->dev); > + > + rkcif->media_dev.dev = dev; > + strscpy(rkcif->media_dev.model, RKCIF_DRIVER_NAME, > + sizeof(rkcif->media_dev.model)); > + media_device_init(&rkcif->media_dev); > + > + rkcif->v4l2_dev.mdev = &rkcif->media_dev; > + ret = v4l2_device_register(dev, &rkcif->v4l2_dev); > + if (ret) > + goto err_media_dev_cleanup; > + > + ret = media_device_register(&rkcif->media_dev); > + if (ret < 0) { > + dev_err(dev, "failed to register media device: %d\n", ret); > + goto err_v4l2_dev_unregister; > + } > + > + v4l2_async_nf_init(&rkcif->notifier, &rkcif->v4l2_dev); > + rkcif->notifier.ops = &rkcif_notifier_ops; > + > + ret = rkcif_register(rkcif); > + if (ret) { > + dev_err(dev, "failed to register media entities: %d\n", ret); > + goto err_notifier_cleanup; > + } > + > + ret = v4l2_async_nf_register(&rkcif->notifier); > + if (ret) > + goto err_rkcif_unregister; > + > + return 0; > + > +err_rkcif_unregister: > + rkcif_unregister(rkcif); > +err_notifier_cleanup: > + v4l2_async_nf_cleanup(&rkcif->notifier); > + media_device_unregister(&rkcif->media_dev); > +err_v4l2_dev_unregister: > + v4l2_device_unregister(&rkcif->v4l2_dev); > +err_media_dev_cleanup: > + media_device_cleanup(&rkcif->media_dev); > + pm_runtime_disable(&pdev->dev); > + return ret; > +} > + > +static void rkcif_remove(struct platform_device *pdev) > +{ > + struct rkcif_device *rkcif = platform_get_drvdata(pdev); > + > + v4l2_async_nf_unregister(&rkcif->notifier); > + rkcif_unregister(rkcif); > + v4l2_async_nf_cleanup(&rkcif->notifier); > + media_device_unregister(&rkcif->media_dev); > + v4l2_device_unregister(&rkcif->v4l2_dev); > + media_device_cleanup(&rkcif->media_dev); > + pm_runtime_disable(&pdev->dev); > +} > + > +static int rkcif_runtime_suspend(struct device *dev) > +{ > + struct rkcif_device *rkcif = dev_get_drvdata(dev); > + > + /* > + * Reset CIF (CRU, DMA, FIFOs) to allow a clean resume. > + * Since this resets the IOMMU too, we cannot issue this reset when > + * resuming. > + */ > + reset_control_assert(rkcif->reset); > + udelay(5); > + reset_control_deassert(rkcif->reset); > + > + clk_bulk_disable_unprepare(rkcif->clks_num, rkcif->clks); > + > + return 0; > +} > + > +static int rkcif_runtime_resume(struct device *dev) > +{ > + struct rkcif_device *rkcif = dev_get_drvdata(dev); > + int ret; > + > + ret = clk_bulk_prepare_enable(rkcif->clks_num, rkcif->clks); > + if (ret) { > + dev_err(dev, "failed to enable clocks\n"); > + return ret; > + } > + > + return 0; > +} > + > +static const struct dev_pm_ops rkcif_plat_pm_ops = { > + .runtime_suspend = rkcif_runtime_suspend, > + .runtime_resume = rkcif_runtime_resume, > +}; > + > +static struct platform_driver rkcif_plat_drv = { > + .driver = { > + .name = RKCIF_DRIVER_NAME, > + .of_match_table = rkcif_plat_of_match, > + .pm = &rkcif_plat_pm_ops, > + }, > + .probe = rkcif_probe, > + .remove = rkcif_remove, > +}; > +module_platform_driver(rkcif_plat_drv); > + > +MODULE_DESCRIPTION("Rockchip Camera Interface (CIF) platform driver"); > +MODULE_LICENSE("GPL"); > > -- > 2.39.5 > > > Reviewed-by: Bryan O'Donoghue _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip