From patchwork Fri May 12 10:28:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jack Zhu X-Patchwork-Id: 681373 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 562F5C77B7F for ; Fri, 12 May 2023 10:33:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240294AbjELKcA convert rfc822-to-8bit (ORCPT ); Fri, 12 May 2023 06:32:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240476AbjELKbh (ORCPT ); Fri, 12 May 2023 06:31:37 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1702C30E7; Fri, 12 May 2023 03:31:30 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 6104D24E345; Fri, 12 May 2023 18:28:48 +0800 (CST) Received: from EXMBX073.cuchost.com (172.16.6.83) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:46 +0800 Received: from xiaofei.localdomain (180.164.60.184) by EXMBX073.cuchost.com (172.16.6.83) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:46 +0800 From: Jack Zhu To: Mauro Carvalho Chehab , Robert Foss , Todor Tomov , , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , Philipp Zabel , "Laurent Pinchart" , Hans Verkuil , Eugen Hristev , Ezequiel Garcia CC: , , , , Subject: [PATCH v5 3/6] media: starfive: Add basic driver Date: Fri, 12 May 2023 18:28:41 +0800 Message-ID: <20230512102844.51084-4-jack.zhu@starfivetech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230512102844.51084-1-jack.zhu@starfivetech.com> References: <20230512102844.51084-1-jack.zhu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [180.164.60.184] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX073.cuchost.com (172.16.6.83) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add basic platform driver for StarFive Camera Subsystem. Signed-off-by: Jack Zhu --- MAINTAINERS | 1 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/starfive/Kconfig | 19 + drivers/media/platform/starfive/Makefile | 9 + drivers/media/platform/starfive/stf_camss.c | 372 +++++++++++++++++++ drivers/media/platform/starfive/stf_camss.h | 153 ++++++++ drivers/media/platform/starfive/stf_common.h | 18 + 8 files changed, 574 insertions(+) create mode 100644 drivers/media/platform/starfive/Kconfig create mode 100644 drivers/media/platform/starfive/Makefile create mode 100644 drivers/media/platform/starfive/stf_camss.c create mode 100644 drivers/media/platform/starfive/stf_camss.h create mode 100644 drivers/media/platform/starfive/stf_common.h diff --git a/MAINTAINERS b/MAINTAINERS index 71291dc58671..33a752569942 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20077,6 +20077,7 @@ L: linux-media@vger.kernel.org S: Maintained F: Documentation/admin-guide/media/starfive_camss.rst F: Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml +F: drivers/media/platform/starfive/ STARFIVE DEVICETREES M: Emil Renner Berthing diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index ee579916f874..627eaa0ab3ee 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -80,6 +80,7 @@ source "drivers/media/platform/renesas/Kconfig" source "drivers/media/platform/rockchip/Kconfig" source "drivers/media/platform/samsung/Kconfig" source "drivers/media/platform/st/Kconfig" +source "drivers/media/platform/starfive/Kconfig" source "drivers/media/platform/sunxi/Kconfig" source "drivers/media/platform/ti/Kconfig" source "drivers/media/platform/verisilicon/Kconfig" diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index 5453bb868e67..5a038498a370 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -23,6 +23,7 @@ obj-y += renesas/ obj-y += rockchip/ obj-y += samsung/ obj-y += st/ +obj-y += starfive/ obj-y += sunxi/ obj-y += ti/ obj-y += verisilicon/ diff --git a/drivers/media/platform/starfive/Kconfig b/drivers/media/platform/starfive/Kconfig new file mode 100644 index 000000000000..1a2293475bd2 --- /dev/null +++ b/drivers/media/platform/starfive/Kconfig @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0-only + +comment "Starfive media platform drivers" + +config VIDEO_STARFIVE_CAMSS + tristate "Starfive Camera Subsystem driver" + depends on V4L_PLATFORM_DRIVERS + depends on VIDEO_DEV && OF + depends on DMA_CMA + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select VIDEOBUF2_DMA_CONTIG + select V4L2_FWNODE + help + Enable this to support for the Starfive Camera subsystem + found on Starfive JH7110 SoC. + + To compile this driver as a module, choose M here: the + module will be called stf-camss. diff --git a/drivers/media/platform/starfive/Makefile b/drivers/media/platform/starfive/Makefile new file mode 100644 index 000000000000..796775fa52f4 --- /dev/null +++ b/drivers/media/platform/starfive/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for StarFive camera subsystem driver. +# + +starfive-camss-objs += \ + stf_camss.o + +obj-$(CONFIG_VIDEO_STARFIVE_CAMSS) += starfive-camss.o \ diff --git a/drivers/media/platform/starfive/stf_camss.c b/drivers/media/platform/starfive/stf_camss.c new file mode 100644 index 000000000000..ba3a2bc8a8ab --- /dev/null +++ b/drivers/media/platform/starfive/stf_camss.c @@ -0,0 +1,372 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * stf_camss.c + * + * Starfive Camera Subsystem driver + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "stf_camss.h" + +static const char * const stfcamss_clocks[] = { + "clk_apb_func", + "clk_wrapper_clk_c", + "clk_dvp_inv", + "clk_axiwr", + "clk_mipi_rx0_pxl", + "clk_ispcore_2x", + "clk_isp_axi", +}; + +static const char * const stfcamss_resets[] = { + "rst_wrapper_p", + "rst_wrapper_c", + "rst_axird", + "rst_axiwr", + "rst_isp_top_n", + "rst_isp_top_axi", +}; + +static int stfcamss_get_mem_res(struct platform_device *pdev, + struct stfcamss *stfcamss) +{ + stfcamss->syscon_base = + devm_platform_ioremap_resource_byname(pdev, "syscon"); + if (IS_ERR(stfcamss->syscon_base)) + return PTR_ERR(stfcamss->syscon_base); + + stfcamss->isp_base = + devm_platform_ioremap_resource_byname(pdev, "isp"); + if (IS_ERR(stfcamss->isp_base)) + return PTR_ERR(stfcamss->isp_base); + + return 0; +} + +/* + * stfcamss_of_parse_endpoint_node - Parse port endpoint node + * @dev: Device + * @node: Device node to be parsed + * @csd: Parsed data from port endpoint node + * + * Return 0 on success or a negative error code on failure + */ +static int stfcamss_of_parse_endpoint_node(struct device *dev, + struct device_node *node, + struct stfcamss_async_subdev *csd) +{ + struct v4l2_fwnode_endpoint vep = { { 0 } }; + + v4l2_fwnode_endpoint_parse(of_fwnode_handle(node), &vep); + dev_dbg(dev, "vep.base.port = 0x%x, id = 0x%x\n", + vep.base.port, vep.base.id); + + csd->port = vep.base.port; + + return 0; +} + +/* + * stfcamss_of_parse_ports - Parse ports node + * @stfcamss: STFCAMSS device + * + * Return number of "port" nodes found in "ports" node + */ +static int stfcamss_of_parse_ports(struct stfcamss *stfcamss) +{ + struct device *dev = stfcamss->dev; + struct device_node *node = NULL; + struct device_node *remote = NULL; + int ret, num_subdevs = 0; + + for_each_endpoint_of_node(dev->of_node, node) { + struct stfcamss_async_subdev *csd; + + if (!of_device_is_available(node)) + continue; + + remote = of_graph_get_remote_port_parent(node); + if (!remote) { + dev_err(dev, "Cannot get remote parent\n"); + ret = -EINVAL; + goto err_cleanup; + } + + csd = v4l2_async_nf_add_fwnode(&stfcamss->notifier, + of_fwnode_handle(remote), + struct stfcamss_async_subdev); + of_node_put(remote); + if (IS_ERR(csd)) { + ret = PTR_ERR(csd); + goto err_cleanup; + } + + ret = stfcamss_of_parse_endpoint_node(dev, node, csd); + if (ret < 0) + goto err_cleanup; + + num_subdevs++; + } + + return num_subdevs; + +err_cleanup: + of_node_put(node); + return ret; +} + +static int stfcamss_subdev_notifier_bound(struct v4l2_async_notifier *async, + struct v4l2_subdev *subdev, + struct v4l2_async_subdev *asd) +{ + struct stfcamss *stfcamss = + container_of(async, struct stfcamss, notifier); + struct host_data *host_data = &stfcamss->host_data; + struct media_entity *source; + int i, j; + + source = &subdev->entity; + + for (i = 0; i < source->num_pads; i++) { + if (source->pads[i].flags & MEDIA_PAD_FL_SOURCE) + break; + } + + if (i == source->num_pads) { + dev_err(stfcamss->dev, "No source pad in external entity\n"); + return -EINVAL; + } + + for (j = 0; host_data->host_entity[j] && (j < HOST_ENTITY_MAX); j++) { + struct media_entity *input; + int ret; + + input = host_data->host_entity[j]; + + ret = media_create_pad_link( + source, + i, + input, + STF_PAD_SINK, + source->function == MEDIA_ENT_F_CAM_SENSOR ? + MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED : + 0); + if (ret < 0) { + dev_err(stfcamss->dev, + "Failed to link %s->%s entities: %d\n", + source->name, input->name, ret); + return ret; + } + } + + return 0; +} + +static int stfcamss_subdev_notifier_complete(struct v4l2_async_notifier *ntf) +{ + struct stfcamss *stfcamss = + container_of(ntf, struct stfcamss, notifier); + + return v4l2_device_register_subdev_nodes(&stfcamss->v4l2_dev); +} + +static const struct v4l2_async_notifier_operations +stfcamss_subdev_notifier_ops = { + .bound = stfcamss_subdev_notifier_bound, + .complete = stfcamss_subdev_notifier_complete, +}; + +static const struct media_device_ops stfcamss_media_ops = { + .link_notify = v4l2_pipeline_link_notify, +}; + +static void stfcamss_mc_init(struct platform_device *pdev, + struct stfcamss *stfcamss) +{ + stfcamss->media_dev.dev = stfcamss->dev; + strscpy(stfcamss->media_dev.model, "Starfive Camera Subsystem", + sizeof(stfcamss->media_dev.model)); + snprintf(stfcamss->media_dev.bus_info, + sizeof(stfcamss->media_dev.bus_info), + "%s:%s", dev_bus_name(&pdev->dev), pdev->name); + stfcamss->media_dev.hw_revision = 0x01; + stfcamss->media_dev.ops = &stfcamss_media_ops; + media_device_init(&stfcamss->media_dev); + + stfcamss->v4l2_dev.mdev = &stfcamss->media_dev; +} + +/* + * stfcamss_probe - Probe STFCAMSS platform device + * @pdev: Pointer to STFCAMSS platform device + * + * Return 0 on success or a negative error code on failure + */ +static int stfcamss_probe(struct platform_device *pdev) +{ + struct stfcamss *stfcamss; + struct device *dev = &pdev->dev; + int ret = 0, i, num_subdevs; + + stfcamss = devm_kzalloc(dev, sizeof(*stfcamss), GFP_KERNEL); + if (!stfcamss) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(stfcamss->irq); ++i) { + stfcamss->irq[i] = platform_get_irq(pdev, i); + if (stfcamss->irq[i] < 0) + return dev_err_probe(&pdev->dev, stfcamss->irq[i], + "Failed to get clock%d", i); + } + + stfcamss->nclks = ARRAY_SIZE(stfcamss->sys_clk); + for (i = 0; i < ARRAY_SIZE(stfcamss->sys_clk); ++i) + stfcamss->sys_clk[i].id = stfcamss_clocks[i]; + ret = devm_clk_bulk_get(dev, stfcamss->nclks, stfcamss->sys_clk); + if (ret) { + dev_err(dev, "Failed to get clk controls\n"); + return ret; + } + + stfcamss->nrsts = ARRAY_SIZE(stfcamss->sys_rst); + for (i = 0; i < ARRAY_SIZE(stfcamss->sys_rst); ++i) + stfcamss->sys_rst[i].id = stfcamss_resets[i]; + ret = devm_reset_control_bulk_get_shared(dev, stfcamss->nrsts, + stfcamss->sys_rst); + if (ret) { + dev_err(dev, "Failed to get reset controls\n"); + return ret; + } + + ret = stfcamss_get_mem_res(pdev, stfcamss); + if (ret) { + dev_err(dev, "Could not map registers\n"); + return ret; + } + + stfcamss->dev = dev; + platform_set_drvdata(pdev, stfcamss); + + v4l2_async_nf_init(&stfcamss->notifier); + + num_subdevs = stfcamss_of_parse_ports(stfcamss); + if (num_subdevs < 0) { + dev_err(dev, "Failed to find subdevices\n"); + return -ENODEV; + } + + stfcamss_mc_init(pdev, stfcamss); + + ret = v4l2_device_register(stfcamss->dev, &stfcamss->v4l2_dev); + if (ret < 0) { + dev_err(dev, "Failed to register V4L2 device: %d\n", ret); + goto err_cleanup_notifier; + } + + ret = media_device_register(&stfcamss->media_dev); + if (ret) { + dev_err(dev, "Failed to register media device: %d\n", ret); + goto err_unregister_device; + } + + stfcamss->notifier.ops = &stfcamss_subdev_notifier_ops; + ret = v4l2_async_nf_register(&stfcamss->v4l2_dev, &stfcamss->notifier); + if (ret) { + dev_err(dev, "Failed to register async subdev nodes: %d\n", + ret); + goto err_unregister_media_dev; + } + + pm_runtime_enable(dev); + + return 0; + +err_unregister_media_dev: + media_device_unregister(&stfcamss->media_dev); +err_unregister_device: + v4l2_device_unregister(&stfcamss->v4l2_dev); +err_cleanup_notifier: + v4l2_async_nf_cleanup(&stfcamss->notifier); + return ret; +} + +/* + * stfcamss_remove - Remove STFCAMSS platform device + * @pdev: Pointer to STFCAMSS platform device + * + * Always returns 0. + */ +static int stfcamss_remove(struct platform_device *pdev) +{ + struct stfcamss *stfcamss = platform_get_drvdata(pdev); + + v4l2_device_unregister(&stfcamss->v4l2_dev); + media_device_cleanup(&stfcamss->media_dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct of_device_id stfcamss_of_match[] = { + { .compatible = "starfive,jh7110-camss" }, + { /* sentinel */ }, +}; + +MODULE_DEVICE_TABLE(of, stfcamss_of_match); + +static int __maybe_unused stfcamss_runtime_suspend(struct device *dev) +{ + struct stfcamss *stfcamss = dev_get_drvdata(dev); + + reset_control_assert(stfcamss->sys_rst[STF_RST_ISP_TOP_AXI].rstc); + reset_control_assert(stfcamss->sys_rst[STF_RST_ISP_TOP_N].rstc); + clk_disable_unprepare(stfcamss->sys_clk[STF_CLK_ISP_AXI].clk); + clk_disable_unprepare(stfcamss->sys_clk[STF_CLK_ISPCORE_2X].clk); + + return 0; +} + +static int __maybe_unused stfcamss_runtime_resume(struct device *dev) +{ + struct stfcamss *stfcamss = dev_get_drvdata(dev); + + clk_prepare_enable(stfcamss->sys_clk[STF_CLK_ISPCORE_2X].clk); + clk_prepare_enable(stfcamss->sys_clk[STF_CLK_ISP_AXI].clk); + reset_control_deassert(stfcamss->sys_rst[STF_RST_ISP_TOP_N].rstc); + reset_control_deassert(stfcamss->sys_rst[STF_RST_ISP_TOP_AXI].rstc); + + return 0; +} + +static const struct dev_pm_ops stfcamss_pm_ops = { + SET_RUNTIME_PM_OPS(stfcamss_runtime_suspend, + stfcamss_runtime_resume, + NULL) +}; + +static struct platform_driver stfcamss_driver = { + .probe = stfcamss_probe, + .remove = stfcamss_remove, + .driver = { + .name = DRV_NAME, + .pm = &stfcamss_pm_ops, + .of_match_table = of_match_ptr(stfcamss_of_match), + }, +}; + +module_platform_driver(stfcamss_driver); + +MODULE_AUTHOR("StarFive Corporation"); +MODULE_DESCRIPTION("StarFive Camera Subsystem driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/starfive/stf_camss.h b/drivers/media/platform/starfive/stf_camss.h new file mode 100644 index 000000000000..8f39cd65950c --- /dev/null +++ b/drivers/media/platform/starfive/stf_camss.h @@ -0,0 +1,153 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * stf_camss.h + * + * Starfive Camera Subsystem driver + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#ifndef STF_CAMSS_H +#define STF_CAMSS_H + +#include +#include +#include +#include + +#include "stf_common.h" + +#define DRV_NAME "starfive-camss" +#define STF_DVP_NAME "stf_dvp" +#define STF_CSI_NAME "cdns_csi2rx" +#define STF_ISP_NAME "stf_isp" +#define STF_VIN_NAME "stf_vin" + +#define STF_PAD_SINK 0 +#define STF_PAD_SRC 1 +#define STF_PADS_NUM 2 + +enum port_num { + PORT_NUMBER_DVP_SENSOR = 0, + PORT_NUMBER_CSI2RX +}; + +enum stf_clk { + STF_CLK_APB_FUNC = 0, + STF_CLK_WRAPPER_CLK_C, + STF_CLK_DVP_INV, + STF_CLK_AXIWR, + STF_CLK_MIPI_RX0_PXL, + STF_CLK_ISPCORE_2X, + STF_CLK_ISP_AXI, + STF_CLK_NUM +}; + +enum stf_rst { + STF_RST_WRAPPER_P = 0, + STF_RST_WRAPPER_C, + STF_RST_AXIRD, + STF_RST_AXIWR, + STF_RST_ISP_TOP_N, + STF_RST_ISP_TOP_AXI, + STF_RST_NUM +}; + +enum stf_irq { + STF_IRQ_VINWR = 0, + STF_IRQ_ISP, + STF_IRQ_ISPCSIL, + STF_IRQ_NUM +}; + +#define HOST_ENTITY_MAX 2 + +struct host_data { + struct media_entity *host_entity[HOST_ENTITY_MAX]; +}; + +struct stfcamss { + struct v4l2_device v4l2_dev; + struct media_device media_dev; + struct media_pipeline pipe; + struct device *dev; + struct v4l2_async_notifier notifier; + struct host_data host_data; + void __iomem *syscon_base; + void __iomem *isp_base; + int irq[STF_IRQ_NUM]; + struct clk_bulk_data sys_clk[STF_CLK_NUM]; + int nclks; + struct reset_control_bulk_data sys_rst[STF_RST_NUM]; + int nrsts; +}; + +struct stfcamss_async_subdev { + struct v4l2_async_subdev asd; /* must be first */ + enum port_num port; +}; + +static inline u32 stf_isp_reg_read(struct stfcamss *stfcamss, u32 reg) +{ + return ioread32(stfcamss->isp_base + reg); +} + +static inline void stf_isp_reg_write(struct stfcamss *stfcamss, + u32 reg, u32 val) +{ + iowrite32(val, stfcamss->isp_base + reg); +} + +static inline void stf_isp_reg_write_delay(struct stfcamss *stfcamss, + u32 reg, u32 val, u32 delay) +{ + iowrite32(val, stfcamss->isp_base + reg); + usleep_range(1000 * delay, 1000 * delay + 100); +} + +static inline void stf_isp_reg_set_bit(struct stfcamss *stfcamss, + u32 reg, u32 mask, u32 val) +{ + u32 value; + + value = ioread32(stfcamss->isp_base + reg) & ~mask; + val &= mask; + val |= value; + iowrite32(val, stfcamss->isp_base + reg); +} + +static inline void stf_isp_reg_set(struct stfcamss *stfcamss, u32 reg, u32 mask) +{ + iowrite32(ioread32(stfcamss->isp_base + reg) | mask, + stfcamss->isp_base + reg); +} + +static inline u32 stf_syscon_reg_read(struct stfcamss *stfcamss, u32 reg) +{ + return ioread32(stfcamss->syscon_base + reg); +} + +static inline void stf_syscon_reg_write(struct stfcamss *stfcamss, + u32 reg, u32 val) +{ + iowrite32(val, stfcamss->syscon_base + reg); +} + +static inline void stf_syscon_reg_set_bit(struct stfcamss *stfcamss, + u32 reg, u32 bit_mask) +{ + u32 value; + + value = ioread32(stfcamss->syscon_base + reg); + iowrite32(value | bit_mask, stfcamss->syscon_base + reg); +} + +static inline void stf_syscon_reg_clear_bit(struct stfcamss *stfcamss, + u32 reg, u32 bit_mask) +{ + u32 value; + + value = ioread32(stfcamss->syscon_base + reg); + iowrite32(value & ~bit_mask, stfcamss->syscon_base + reg); +} +#endif /* STF_CAMSS_H */ diff --git a/drivers/media/platform/starfive/stf_common.h b/drivers/media/platform/starfive/stf_common.h new file mode 100644 index 000000000000..e04fca2d9cd4 --- /dev/null +++ b/drivers/media/platform/starfive/stf_common.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * stf_common.h + * + * StarFive Camera Subsystem - Common definitions + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#ifndef STF_COMMON_H +#define STF_COMMON_H + +enum stf_subdev_type { + STF_SUBDEV_TYPE_VIN, + STF_SUBDEV_TYPE_ISP, +}; + +#endif /* STF_COMMON_H */ From patchwork Fri May 12 10:28:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jack Zhu X-Patchwork-Id: 681374 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF97DC7EE25 for ; Fri, 12 May 2023 10:32:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240853AbjELKca convert rfc822-to-8bit (ORCPT ); Fri, 12 May 2023 06:32:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240338AbjELKbm (ORCPT ); Fri, 12 May 2023 06:31:42 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EBF5268D; Fri, 12 May 2023 03:31:35 -0700 (PDT) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id E136F24E347; Fri, 12 May 2023 18:28:48 +0800 (CST) Received: from EXMBX073.cuchost.com (172.16.6.83) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:47 +0800 Received: from xiaofei.localdomain (180.164.60.184) by EXMBX073.cuchost.com (172.16.6.83) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:46 +0800 From: Jack Zhu To: Mauro Carvalho Chehab , Robert Foss , Todor Tomov , , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , Philipp Zabel , "Laurent Pinchart" , Hans Verkuil , Eugen Hristev , Ezequiel Garcia CC: , , , , Subject: [PATCH v5 4/6] media: starfive: Add video driver Date: Fri, 12 May 2023 18:28:42 +0800 Message-ID: <20230512102844.51084-5-jack.zhu@starfivetech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230512102844.51084-1-jack.zhu@starfivetech.com> References: <20230512102844.51084-1-jack.zhu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [180.164.60.184] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX073.cuchost.com (172.16.6.83) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add video driver for StarFive Camera Subsystem. Signed-off-by: Jack Zhu --- drivers/media/platform/starfive/Makefile | 3 +- drivers/media/platform/starfive/stf_video.c | 864 ++++++++++++++++++++ drivers/media/platform/starfive/stf_video.h | 95 +++ 3 files changed, 961 insertions(+), 1 deletion(-) create mode 100644 drivers/media/platform/starfive/stf_video.c create mode 100644 drivers/media/platform/starfive/stf_video.h diff --git a/drivers/media/platform/starfive/Makefile b/drivers/media/platform/starfive/Makefile index 796775fa52f4..d7a42b3a938c 100644 --- a/drivers/media/platform/starfive/Makefile +++ b/drivers/media/platform/starfive/Makefile @@ -4,6 +4,7 @@ # starfive-camss-objs += \ - stf_camss.o + stf_camss.o \ + stf_video.o obj-$(CONFIG_VIDEO_STARFIVE_CAMSS) += starfive-camss.o \ diff --git a/drivers/media/platform/starfive/stf_video.c b/drivers/media/platform/starfive/stf_video.c new file mode 100644 index 000000000000..f027c7308dfb --- /dev/null +++ b/drivers/media/platform/starfive/stf_video.c @@ -0,0 +1,864 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * stf_video.c + * + * StarFive Camera Subsystem - V4L2 device node + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#include +#include +#include +#include +#include + +#include "stf_camss.h" +#include "stf_video.h" + +static const struct stfcamss_format_info formats_pix_wr[] = { + { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, +}; + +static const struct stfcamss_format_info formats_pix_isp[] = { + { MEDIA_BUS_FMT_Y12_1X12, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, +}; + +/* ----------------------------------------------------------------------------- + * Helper functions + */ + +static int video_find_format(u32 code, u32 pixelformat, + const struct stfcamss_format_info *formats, + unsigned int nformats) +{ + int i; + + for (i = 0; i < nformats; i++) { + if (formats[i].code == code && + formats[i].pixelformat == pixelformat) + return i; + } + + for (i = 0; i < nformats; i++) + if (formats[i].code == code) + return i; + + for (i = 0; i < nformats; i++) + if (formats[i].pixelformat == pixelformat) + return i; + + return -EINVAL; +} + +static int __video_try_fmt(struct stfcamss_video *video, struct v4l2_format *f) +{ + struct v4l2_pix_format *pix; + const struct stfcamss_format_info *fi; + u32 width, height; + u32 bpl; + int i; + + pix = &f->fmt.pix; + + for (i = 0; i < video->nformats; i++) + if (pix->pixelformat == video->formats[i].pixelformat) + break; + + if (i == video->nformats) + i = 0; /* default format */ + + fi = &video->formats[i]; + width = pix->width; + height = pix->height; + + memset(pix, 0, sizeof(*pix)); + + pix->pixelformat = fi->pixelformat; + pix->width = clamp_t(u32, width, STFCAMSS_FRAME_MIN_WIDTH, + STFCAMSS_FRAME_MAX_WIDTH); + pix->height = clamp_t(u32, height, STFCAMSS_FRAME_MIN_HEIGHT, + STFCAMSS_FRAME_MAX_HEIGHT); + bpl = pix->width / fi->hsub[0].numerator * + fi->hsub[0].denominator * fi->bpp[0] / 8; + bpl = ALIGN(bpl, video->bpl_alignment); + pix->bytesperline = bpl; + pix->sizeimage = pix->height / fi->vsub[0].numerator * + fi->vsub[0].denominator * bpl; + + pix->field = V4L2_FIELD_NONE; + pix->colorspace = V4L2_COLORSPACE_SRGB; + pix->flags = 0; + pix->ycbcr_enc = + V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace); + pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, + pix->colorspace, + pix->ycbcr_enc); + pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace); + + return 0; +} + +static int stf_video_init_format(struct stfcamss_video *video) +{ + int ret; + struct v4l2_format format = { + .type = video->type, + .fmt.pix = { + .width = 1920, + .height = 1080, + .pixelformat = V4L2_PIX_FMT_RGB565, + }, + }; + + ret = __video_try_fmt(video, &format); + + if (ret < 0) + return ret; + + video->active_fmt = format; + + return 0; +} + +/* ----------------------------------------------------------------------------- + * Video queue operations + */ + +static int video_queue_setup(struct vb2_queue *q, + unsigned int *num_buffers, + unsigned int *num_planes, + unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct stfcamss_video *video = vb2_get_drv_priv(q); + const struct v4l2_pix_format *format = &video->active_fmt.fmt.pix; + + if (*num_planes) { + if (*num_planes != 1) + return -EINVAL; + + if (sizes[0] < format->sizeimage) + return -EINVAL; + } + + *num_planes = 1; + sizes[0] = format->sizeimage; + if (!sizes[0]) + dev_err(video->stfcamss->dev, + "%s: error size is zero!!!\n", __func__); + + dev_dbg(video->stfcamss->dev, "planes = %d, size = %d\n", + *num_planes, sizes[0]); + + return 0; +} + +static int video_buf_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue); + struct stfcamss_buffer *buffer = + container_of(vbuf, struct stfcamss_buffer, vb); + const struct v4l2_pix_format *fmt = &video->active_fmt.fmt.pix; + dma_addr_t *paddr; + + buffer->sizeimage = 0; + + paddr = vb2_plane_cookie(vb, 0); + buffer->sizeimage = vb2_plane_size(vb, 0); + buffer->addr[0] = *paddr; + if (fmt->pixelformat == V4L2_PIX_FMT_NV12 || + fmt->pixelformat == V4L2_PIX_FMT_NV21 || + fmt->pixelformat == V4L2_PIX_FMT_NV16 || + fmt->pixelformat == V4L2_PIX_FMT_NV61) + buffer->addr[1] = + buffer->addr[0] + fmt->bytesperline * fmt->height; + + return 0; +} + +static int video_buf_prepare(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue); + const struct v4l2_pix_format *fmt = &video->active_fmt.fmt.pix; + + if (fmt->sizeimage > vb2_plane_size(vb, 0)) { + dev_err(video->stfcamss->dev, + "sizeimage = %d, plane size = %d\n", + fmt->sizeimage, (unsigned int)vb2_plane_size(vb, 0)); + return -EINVAL; + } + vb2_set_plane_payload(vb, 0, fmt->sizeimage); + + vbuf->field = V4L2_FIELD_NONE; + + return 0; +} + +static void video_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue); + struct stfcamss_buffer *buffer = + container_of(vbuf, struct stfcamss_buffer, vb); + + video->ops->queue_buffer(video, buffer); +} + +/* + * video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format + * @mbus: v4l2_mbus_framefmt format (input) + * @pix: v4l2_pix_format_mplane format (output) + * @f: a pointer to formats array element to be used for the conversion + * @alignment: bytesperline alignment value + * + * Fill the output pix structure with information from the input mbus format. + * + * Return 0 on success or a negative error code otherwise + */ +static int video_mbus_to_pix(const struct v4l2_mbus_framefmt *mbus, + struct v4l2_pix_format *pix, + const struct stfcamss_format_info *f, + unsigned int alignment) +{ + u32 bytesperline; + + memset(pix, 0, sizeof(*pix)); + v4l2_fill_pix_format(pix, mbus); + pix->pixelformat = f->pixelformat; + bytesperline = pix->width / f->hsub[0].numerator * + f->hsub[0].denominator * f->bpp[0] / 8; + bytesperline = ALIGN(bytesperline, alignment); + pix->bytesperline = bytesperline; + pix->sizeimage = pix->height / f->vsub[0].numerator * + f->vsub[0].denominator * bytesperline; + return 0; +} + +static struct v4l2_subdev *video_remote_subdev(struct stfcamss_video *video, + u32 *pad) +{ + struct media_pad *remote; + + remote = media_pad_remote_pad_first(&video->pad); + + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) + return NULL; + + if (pad) + *pad = remote->index; + + return media_entity_to_v4l2_subdev(remote->entity); +} + +static int video_get_subdev_format(struct stfcamss_video *video, + struct v4l2_format *format) +{ + struct v4l2_pix_format *pix = &video->active_fmt.fmt.pix; + struct v4l2_subdev_format fmt; + struct v4l2_subdev *subdev; + u32 pixelformat; + u32 pad; + int ret; + + subdev = video_remote_subdev(video, &pad); + if (!subdev) + return -EPIPE; + + fmt.pad = pad; + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + + ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); + if (ret) + return ret; + + pixelformat = pix->pixelformat; + ret = video_find_format(fmt.format.code, pixelformat, + video->formats, video->nformats); + if (ret < 0) + return ret; + + format->type = video->type; + + return video_mbus_to_pix(&fmt.format, &format->fmt.pix, + &video->formats[ret], video->bpl_alignment); +} + +static int video_check_format(struct stfcamss_video *video) +{ + struct v4l2_pix_format *pix = &video->active_fmt.fmt.pix; + struct v4l2_format format; + struct v4l2_pix_format *sd_pix = &format.fmt.pix; + int ret; + + sd_pix->pixelformat = pix->pixelformat; + ret = video_get_subdev_format(video, &format); + if (ret < 0) + return ret; + + if (pix->pixelformat != sd_pix->pixelformat || + pix->height > sd_pix->height || + pix->width > sd_pix->width || + pix->field != format.fmt.pix.field) { + dev_err(video->stfcamss->dev, + "%s, not match:\n" + "0x%x 0x%x\n0x%x 0x%x\n0x%x 0x%x\n", + __func__, + pix->pixelformat, sd_pix->pixelformat, + pix->height, sd_pix->height, + pix->field, format.fmt.pix.field); + return -EPIPE; + } + + return 0; +} + +static int video_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct stfcamss_video *video = vb2_get_drv_priv(q); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct media_pad *pad; + struct v4l2_subdev *subdev; + int ret; + + ret = video_device_pipeline_start(vdev, &video->stfcamss->pipe); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to media_pipeline_start: %d\n", ret); + return ret; + } + + ret = video_check_format(video); + if (ret < 0) + goto error; + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_pad_remote_pad_first(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + ret = v4l2_subdev_call(subdev, video, s_stream, 1); + if (ret < 0 && ret != -ENOIOCTLCMD) + goto error; + } + return 0; + +error: + video_device_pipeline_stop(vdev); + video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED); + return ret; +} + +static void video_stop_streaming(struct vb2_queue *q) +{ + struct stfcamss_video *video = vb2_get_drv_priv(q); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct media_pad *pad; + struct v4l2_subdev *subdev; + + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_pad_remote_pad_first(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + v4l2_subdev_call(subdev, video, s_stream, 0); + } + + video_device_pipeline_stop(vdev); + video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR); +} + +static const struct vb2_ops stf_video_vb2_q_ops = { + .queue_setup = video_queue_setup, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .buf_init = video_buf_init, + .buf_prepare = video_buf_prepare, + .buf_queue = video_buf_queue, + .start_streaming = video_start_streaming, + .stop_streaming = video_stop_streaming, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 ioctls + */ + +static int video_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct stfcamss_video *video = video_drvdata(file); + + strscpy(cap->driver, "stf camss", sizeof(cap->driver)); + strscpy(cap->card, "Starfive Camera Subsystem", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(video->stfcamss->dev)); + return 0; +} + +static int video_get_pfmt_by_index(struct stfcamss_video *video, int ndx) +{ + int i, j, k; + + /* find index "i" of "k"th unique pixelformat in formats array */ + k = -1; + for (i = 0; i < video->nformats; i++) { + for (j = 0; j < i; j++) { + if (video->formats[i].pixelformat == + video->formats[j].pixelformat) + break; + } + + if (j == i) + k++; + + if (k == ndx) + return i; + } + + return -EINVAL; +} + +static int video_get_pfmt_by_mcode(struct stfcamss_video *video, u32 mcode) +{ + int i; + + for (i = 0; i < video->nformats; i++) { + if (video->formats[i].code == mcode) + return i; + } + + return -EINVAL; +} + +static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f) +{ + struct stfcamss_video *video = video_drvdata(file); + int i; + + if (f->type != video->type) + return -EINVAL; + if (f->index >= video->nformats) + return -EINVAL; + + if (f->mbus_code) { + /* Each entry in formats[] table has unique mbus_code */ + if (f->index > 0) + return -EINVAL; + + i = video_get_pfmt_by_mcode(video, f->mbus_code); + } else { + i = video_get_pfmt_by_index(video, f->index); + } + + if (i < 0) + return -EINVAL; + + f->pixelformat = video->formats[i].pixelformat; + + return 0; +} + +static int video_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct stfcamss_video *video = video_drvdata(file); + int i; + + if (fsize->index) + return -EINVAL; + + for (i = 0; i < video->nformats; i++) { + if (video->formats[i].pixelformat == fsize->pixel_format) + break; + } + + if (i == video->nformats) + return -EINVAL; + + fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS; + fsize->stepwise.min_width = STFCAMSS_FRAME_MIN_WIDTH; + fsize->stepwise.max_width = STFCAMSS_FRAME_MAX_WIDTH; + fsize->stepwise.min_height = STFCAMSS_FRAME_MIN_HEIGHT; + fsize->stepwise.max_height = STFCAMSS_FRAME_MAX_HEIGHT; + fsize->stepwise.step_width = 1; + fsize->stepwise.step_height = 1; + + return 0; +} + +static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct stfcamss_video *video = video_drvdata(file); + + *f = video->active_fmt; + + return 0; +} + +static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct stfcamss_video *video = video_drvdata(file); + int ret; + + if (vb2_is_busy(&video->vb2_q)) + return -EBUSY; + + ret = __video_try_fmt(video, f); + if (ret < 0) + return ret; + + video->active_fmt = *f; + + return 0; +} + +static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct stfcamss_video *video = video_drvdata(file); + + return __video_try_fmt(video, f); +} + +static int video_enum_input(struct file *file, void *fh, + struct v4l2_input *input) +{ + if (input->index > 0) + return -EINVAL; + + strscpy(input->name, "camera", sizeof(input->name)); + input->type = V4L2_INPUT_TYPE_CAMERA; + + return 0; +} + +static int video_g_input(struct file *file, void *fh, unsigned int *input) +{ + *input = 0; + + return 0; +} + +static int video_s_input(struct file *file, void *fh, unsigned int input) +{ + return input == 0 ? 0 : -EINVAL; +} + +static int video_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct stfcamss_video *video = video_drvdata(file); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct v4l2_subdev *subdev; + struct media_pad *pad; + int ret, is_support = 0; + + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_pad_remote_pad_first(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + ret = v4l2_g_parm_cap(vdev, subdev, p); + if (ret < 0 && ret != -ENOIOCTLCMD) + break; + if (!ret) + is_support = 1; + } + + return is_support ? 0 : ret; +} + +static int video_s_parm(struct file *file, void *priv, + struct v4l2_streamparm *p) +{ + struct stfcamss_video *video = video_drvdata(file); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct v4l2_subdev *subdev; + struct media_pad *pad; + struct v4l2_streamparm tmp_p; + int ret, is_support = 0; + + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_pad_remote_pad_first(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + tmp_p = *p; + ret = v4l2_s_parm_cap(vdev, subdev, &tmp_p); + if (ret < 0 && ret != -ENOIOCTLCMD) + break; + if (!ret) { + is_support = 1; + *p = tmp_p; + } + } + + return is_support ? 0 : ret; +} + +static const struct v4l2_ioctl_ops stf_vid_vin_ioctl_ops = { + .vidioc_querycap = video_querycap, + .vidioc_enum_fmt_vid_cap = video_enum_fmt, + .vidioc_enum_fmt_vid_out = video_enum_fmt, + .vidioc_enum_framesizes = video_enum_framesizes, + .vidioc_g_fmt_vid_cap = video_g_fmt, + .vidioc_s_fmt_vid_cap = video_s_fmt, + .vidioc_try_fmt_vid_cap = video_try_fmt, + .vidioc_g_fmt_vid_out = video_g_fmt, + .vidioc_s_fmt_vid_out = video_s_fmt, + .vidioc_try_fmt_vid_out = video_try_fmt, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_enum_input = video_enum_input, + .vidioc_g_input = video_g_input, + .vidioc_s_input = video_s_input, + .vidioc_g_parm = video_g_parm, + .vidioc_s_parm = video_s_parm, +}; + +static const struct v4l2_ioctl_ops stf_vid_isp_ioctl_ops = { + .vidioc_querycap = video_querycap, + .vidioc_enum_fmt_vid_cap = video_enum_fmt, + .vidioc_enum_fmt_vid_out = video_enum_fmt, + .vidioc_enum_framesizes = video_enum_framesizes, + .vidioc_g_fmt_vid_cap = video_g_fmt, + .vidioc_s_fmt_vid_cap = video_s_fmt, + .vidioc_try_fmt_vid_cap = video_try_fmt, + .vidioc_g_fmt_vid_out = video_g_fmt, + .vidioc_s_fmt_vid_out = video_s_fmt, + .vidioc_try_fmt_vid_out = video_try_fmt, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_enum_input = video_enum_input, + .vidioc_g_input = video_g_input, + .vidioc_s_input = video_s_input, + .vidioc_g_parm = video_g_parm, + .vidioc_s_parm = video_s_parm, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 file operations + */ + +static int video_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct stfcamss_video *video = video_drvdata(file); + struct v4l2_fh *vfh; + int ret; + + mutex_lock(&video->lock); + + vfh = kzalloc(sizeof(*vfh), GFP_KERNEL); + if (!vfh) { + ret = -ENOMEM; + goto error_alloc; + } + + v4l2_fh_init(vfh, vdev); + v4l2_fh_add(vfh); + + file->private_data = vfh; + + ret = v4l2_pipeline_pm_get(&vdev->entity); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to power up pipeline: %d\n", ret); + goto error_pm_use; + } + mutex_unlock(&video->lock); + + return 0; + +error_pm_use: + v4l2_fh_release(file); +error_alloc: + mutex_unlock(&video->lock); + return ret; +} + +static int video_release(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + + vb2_fop_release(file); + v4l2_pipeline_pm_put(&vdev->entity); + file->private_data = NULL; + + return 0; +} + +static const struct v4l2_file_operations stf_vid_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = video_open, + .release = video_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .read = vb2_fop_read, +}; + +/* ----------------------------------------------------------------------------- + * STFCAMSS video core + */ + +static void stf_video_release(struct video_device *vdev) +{ + struct stfcamss_video *video = video_get_drvdata(vdev); + + media_entity_cleanup(&vdev->entity); + + mutex_destroy(&video->q_lock); + mutex_destroy(&video->lock); +} + +int stf_video_register(struct stfcamss_video *video, + struct v4l2_device *v4l2_dev, const char *name) +{ + struct video_device *vdev; + struct vb2_queue *q; + struct media_pad *pad = &video->pad; + int ret; + + vdev = &video->vdev; + + mutex_init(&video->q_lock); + + q = &video->vb2_q; + q->drv_priv = video; + q->mem_ops = &vb2_dma_contig_memops; + q->ops = &stf_video_vb2_q_ops; + q->type = video->type; + q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->buf_struct_size = sizeof(struct stfcamss_buffer); + q->dev = video->stfcamss->dev; + q->lock = &video->q_lock; + q->min_buffers_needed = STFCAMSS_MIN_BUFFERS; + ret = vb2_queue_init(q); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to init vb2 queue: %d\n", ret); + goto err_vb2_init; + } + + pad->flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&vdev->entity, 1, pad); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to init video entity: %d\n", ret); + goto err_vb2_init; + } + + mutex_init(&video->lock); + + if (video->id == STF_V_LINE_WR) { + video->formats = formats_pix_wr; + video->nformats = ARRAY_SIZE(formats_pix_wr); + video->bpl_alignment = STFCAMSS_FRAME_WIDTH_ALIGN_8; + vdev->ioctl_ops = &stf_vid_vin_ioctl_ops; + } else { + video->formats = formats_pix_isp; + video->nformats = ARRAY_SIZE(formats_pix_isp); + video->bpl_alignment = STFCAMSS_FRAME_WIDTH_ALIGN_8; + vdev->ioctl_ops = &stf_vid_isp_ioctl_ops; + } + + ret = stf_video_init_format(video); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to init format: %d\n", ret); + goto err_vid_init_format; + } + + vdev->fops = &stf_vid_fops; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE; + vdev->vfl_dir = VFL_DIR_RX; + vdev->device_caps |= V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; + vdev->release = stf_video_release; + vdev->v4l2_dev = v4l2_dev; + vdev->queue = &video->vb2_q; + vdev->lock = &video->lock; + strscpy(vdev->name, name, sizeof(vdev->name)); + + ret = video_register_device(vdev, VFL_TYPE_VIDEO, video->id); + if (ret < 0) { + dev_err(video->stfcamss->dev, + "Failed to register video device: %d\n", ret); + goto err_vid_reg; + } + + video_set_drvdata(vdev, video); + return 0; + +err_vid_reg: +err_vid_init_format: + media_entity_cleanup(&vdev->entity); + mutex_destroy(&video->lock); +err_vb2_init: + mutex_destroy(&video->q_lock); + return ret; +} + +void stf_video_unregister(struct stfcamss_video *video) +{ + vb2_video_unregister_device(&video->vdev); +} diff --git a/drivers/media/platform/starfive/stf_video.h b/drivers/media/platform/starfive/stf_video.h new file mode 100644 index 000000000000..63a9a7706a03 --- /dev/null +++ b/drivers/media/platform/starfive/stf_video.h @@ -0,0 +1,95 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * stf_video.h + * + * StarFive Camera Subsystem - V4L2 device node + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#ifndef STF_VIDEO_H +#define STF_VIDEO_H + +#include +#include +#include +#include +#include +#include + +#define STFCAMSS_FRAME_MIN_WIDTH 64 +#define STFCAMSS_FRAME_MAX_WIDTH 1920 +#define STFCAMSS_FRAME_MIN_HEIGHT 64 +#define STFCAMSS_FRAME_MAX_HEIGHT 1080 +#define STFCAMSS_FRAME_WIDTH_ALIGN_8 8 +#define STFCAMSS_FRAME_WIDTH_ALIGN_128 128 +#define STFCAMSS_MIN_BUFFERS 2 + +#define STFCAMSS_MAX_ENTITY_NAME_LEN 27 + +enum stf_v_line_id { + STF_V_LINE_WR = 0, + STF_V_LINE_ISP, + STF_V_LINE_MAX, +}; + +struct stfcamss_buffer { + struct vb2_v4l2_buffer vb; + dma_addr_t addr[3]; + struct list_head queue; + int sizeimage; +}; + +struct fract { + u8 numerator; + u8 denominator; +}; + +/* + * struct stfcamss_format_info - ISP media bus format information + * @code: V4L2 media bus format code + * @pixelformat: V4L2 pixel format FCC identifier + * @planes: Number of planes + * @hsub: Horizontal subsampling (for each plane) + * @vsub: Vertical subsampling (for each plane) + * @bpp: Bits per pixel when stored in memory (for each plane) + */ +struct stfcamss_format_info { + u32 code; + u32 pixelformat; + u8 planes; + struct fract hsub[3]; + struct fract vsub[3]; + u8 bpp[3]; +}; + +struct stfcamss_video { + struct stfcamss *stfcamss; + u8 id; + struct vb2_queue vb2_q; + struct video_device vdev; + struct media_pad pad; + struct media_pipeline pipe; + struct v4l2_format active_fmt; + enum v4l2_buf_type type; + const struct stfcamss_video_ops *ops; + struct mutex lock; /* serialize device access */ + struct mutex q_lock; /* protects the queue */ + unsigned int bpl_alignment; + const struct stfcamss_format_info *formats; + unsigned int nformats; +}; + +struct stfcamss_video_ops { + int (*queue_buffer)(struct stfcamss_video *vid, + struct stfcamss_buffer *buf); + int (*flush_buffers)(struct stfcamss_video *vid, + enum vb2_buffer_state state); +}; + +int stf_video_register(struct stfcamss_video *video, + struct v4l2_device *v4l2_dev, const char *name); + +void stf_video_unregister(struct stfcamss_video *video); + +#endif /* STF_VIDEO_H */ From patchwork Fri May 12 10:28:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jack Zhu X-Patchwork-Id: 681376 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1B45C77B7F for ; Fri, 12 May 2023 10:31:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240502AbjELKbh convert rfc822-to-8bit (ORCPT ); Fri, 12 May 2023 06:31:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231660AbjELKbe (ORCPT ); Fri, 12 May 2023 06:31:34 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 205BB83DC; Fri, 12 May 2023 03:31:24 -0700 (PDT) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 0065424E34B; Fri, 12 May 2023 18:28:49 +0800 (CST) Received: from EXMBX073.cuchost.com (172.16.6.83) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:48 +0800 Received: from xiaofei.localdomain (180.164.60.184) by EXMBX073.cuchost.com (172.16.6.83) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 12 May 2023 18:28:47 +0800 From: Jack Zhu To: Mauro Carvalho Chehab , Robert Foss , Todor Tomov , , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , Philipp Zabel , "Laurent Pinchart" , Hans Verkuil , Eugen Hristev , Ezequiel Garcia CC: , , , , Subject: [PATCH v5 6/6] media: starfive: Add VIN driver Date: Fri, 12 May 2023 18:28:44 +0800 Message-ID: <20230512102844.51084-7-jack.zhu@starfivetech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230512102844.51084-1-jack.zhu@starfivetech.com> References: <20230512102844.51084-1-jack.zhu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [180.164.60.184] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX073.cuchost.com (172.16.6.83) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add Video In Controller driver for StarFive Camera Subsystem. Signed-off-by: Jack Zhu --- drivers/media/platform/starfive/Makefile | 4 +- drivers/media/platform/starfive/stf_camss.c | 39 +- drivers/media/platform/starfive/stf_camss.h | 2 + drivers/media/platform/starfive/stf_vin.c | 1134 +++++++++++++++++ drivers/media/platform/starfive/stf_vin.h | 180 +++ .../media/platform/starfive/stf_vin_hw_ops.c | 241 ++++ 6 files changed, 1598 insertions(+), 2 deletions(-) create mode 100644 drivers/media/platform/starfive/stf_vin.c create mode 100644 drivers/media/platform/starfive/stf_vin.h create mode 100644 drivers/media/platform/starfive/stf_vin_hw_ops.c diff --git a/drivers/media/platform/starfive/Makefile b/drivers/media/platform/starfive/Makefile index 60a3018f4994..bf497dd24bbb 100644 --- a/drivers/media/platform/starfive/Makefile +++ b/drivers/media/platform/starfive/Makefile @@ -7,6 +7,8 @@ starfive-camss-objs += \ stf_camss.o \ stf_isp.o \ stf_isp_hw_ops.o \ - stf_video.o + stf_video.o \ + stf_vin.o \ + stf_vin_hw_ops.o obj-$(CONFIG_VIDEO_STARFIVE_CAMSS) += starfive-camss.o \ diff --git a/drivers/media/platform/starfive/stf_camss.c b/drivers/media/platform/starfive/stf_camss.c index 7ae9a827daa1..926315fce7fe 100644 --- a/drivers/media/platform/starfive/stf_camss.c +++ b/drivers/media/platform/starfive/stf_camss.c @@ -142,27 +142,61 @@ static int stfcamss_init_subdevices(struct stfcamss *stfcamss) return ret; } + ret = stf_vin_subdev_init(stfcamss); + if (ret < 0) { + dev_err(stfcamss->dev, "Failed to init vin subdev: %d\n", ret); + return ret; + } return ret; } static int stfcamss_register_subdevices(struct stfcamss *stfcamss) { int ret; + struct stf_vin_dev *vin_dev = &stfcamss->vin_dev; struct stf_isp_dev *isp_dev = &stfcamss->isp_dev; ret = stf_isp_register(isp_dev, &stfcamss->v4l2_dev); if (ret < 0) { dev_err(stfcamss->dev, "Failed to register stf isp%d entity: %d\n", 0, ret); - return ret; + goto err_reg_isp; + } + + ret = stf_vin_register(vin_dev, &stfcamss->v4l2_dev); + if (ret < 0) { + dev_err(stfcamss->dev, + "Failed to register vin entity: %d\n", ret); + goto err_reg_vin; } + ret = media_create_pad_link(&isp_dev->subdev.entity, + STF_ISP_PAD_SRC, + &vin_dev->line[VIN_LINE_ISP].subdev.entity, + STF_VIN_PAD_SINK, + 0); + if (ret < 0) { + dev_err(stfcamss->dev, + "Failed to link %s->%s entities: %d\n", + isp_dev->subdev.entity.name, + vin_dev->line[VIN_LINE_ISP].subdev.entity.name, ret); + goto err_link; + } + + return ret; + +err_link: + stf_vin_unregister(&stfcamss->vin_dev); +err_reg_vin: + stf_isp_unregister(&stfcamss->isp_dev); +err_reg_isp: return ret; } static void stfcamss_unregister_subdevices(struct stfcamss *stfcamss) { stf_isp_unregister(&stfcamss->isp_dev); + stf_vin_unregister(&stfcamss->vin_dev); } static int stfcamss_subdev_notifier_bound(struct v4l2_async_notifier *async, @@ -175,11 +209,14 @@ static int stfcamss_subdev_notifier_bound(struct v4l2_async_notifier *async, container_of(asd, struct stfcamss_async_subdev, asd); enum port_num port = csd->port; struct stf_isp_dev *isp_dev = &stfcamss->isp_dev; + struct stf_vin_dev *vin_dev = &stfcamss->vin_dev; struct host_data *host_data = &stfcamss->host_data; struct media_entity *source; int i, j; if (port == PORT_NUMBER_CSI2RX) { + host_data->host_entity[0] = + &vin_dev->line[VIN_LINE_WR].subdev.entity; host_data->host_entity[1] = &isp_dev->subdev.entity; } else if (port == PORT_NUMBER_DVP_SENSOR) { dev_err(stfcamss->dev, "Not support DVP sensor\n"); diff --git a/drivers/media/platform/starfive/stf_camss.h b/drivers/media/platform/starfive/stf_camss.h index c9d94be92ea8..688bb3b7b6d0 100644 --- a/drivers/media/platform/starfive/stf_camss.h +++ b/drivers/media/platform/starfive/stf_camss.h @@ -17,6 +17,7 @@ #include "stf_common.h" #include "stf_isp.h" +#include "stf_vin.h" #define DRV_NAME "starfive-camss" #define STF_DVP_NAME "stf_dvp" @@ -72,6 +73,7 @@ struct stfcamss { struct media_device media_dev; struct media_pipeline pipe; struct device *dev; + struct stf_vin_dev vin_dev; struct stf_isp_dev isp_dev; struct v4l2_async_notifier notifier; struct host_data host_data; diff --git a/drivers/media/platform/starfive/stf_vin.c b/drivers/media/platform/starfive/stf_vin.c new file mode 100644 index 000000000000..21b0afa4ca3a --- /dev/null +++ b/drivers/media/platform/starfive/stf_vin.c @@ -0,0 +1,1134 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * stf_vin.c + * + * StarFive Camera Subsystem - VIN Module + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ +#include + +#include "stf_camss.h" + +#define vin_line_array(ptr_line) \ + ((const struct vin_line (*)[]) &(ptr_line)[-((ptr_line)->id)]) + +#define line_to_vin_dev(ptr_line) \ + container_of(vin_line_array(ptr_line), struct stf_vin_dev, line) + +#define VIN_FRAME_DROP_MAX_VAL 90 +#define VIN_FRAME_DROP_MIN_VAL 4 +#define VIN_FRAME_PER_SEC_MAX_VAL 90 + +/* ISP ctrl need 1 sec to let frames become stable. */ +#define VIN_FRAME_DROP_SEC_FOR_ISP_CTRL 1 + +static const struct vin_format vin_formats_wr[] = { + { MEDIA_BUS_FMT_SRGGB10_1X10, 10}, + { MEDIA_BUS_FMT_SGRBG10_1X10, 10}, + { MEDIA_BUS_FMT_SGBRG10_1X10, 10}, + { MEDIA_BUS_FMT_SBGGR10_1X10, 10}, +}; + +static const struct vin_format vin_formats_uo[] = { + { MEDIA_BUS_FMT_Y12_1X12, 8}, +}; + +static const struct vin_format_table vin_formats_table[] = { + /* VIN_LINE_WR */ + { vin_formats_wr, ARRAY_SIZE(vin_formats_wr) }, + /* VIN_LINE_ISP */ + { vin_formats_uo, ARRAY_SIZE(vin_formats_uo) }, +}; + +static void vin_buffer_done(struct vin_line *line); +static void vin_change_buffer(struct vin_line *line); +static struct stfcamss_buffer *vin_buf_get_pending(struct vin_output *output); +static void vin_output_init_addrs(struct vin_line *line); +static void vin_init_outputs(struct vin_line *line); +static struct v4l2_mbus_framefmt * +__vin_get_format(struct vin_line *line, + struct v4l2_subdev_state *state, + unsigned int pad, + enum v4l2_subdev_format_whence which); + +static char *vin_get_line_subdevname(int line_id) +{ + char *name = NULL; + + switch (line_id) { + case VIN_LINE_WR: + name = "wr"; + break; + case VIN_LINE_ISP: + name = "isp0"; + break; + default: + name = "unknown"; + break; + } + return name; +} + +static enum isp_line_id vin_map_isp_line(enum vin_line_id line) +{ + enum isp_line_id line_id; + + if (line > VIN_LINE_WR && line < VIN_LINE_MAX) + line_id = STF_ISP_LINE_SRC; + else + line_id = STF_ISP_LINE_INVALID; + + return line_id; +} + +enum isp_pad_id stf_vin_map_isp_pad(enum vin_line_id line, enum isp_pad_id def) +{ + enum isp_pad_id pad_id; + + if (line == VIN_LINE_WR) + pad_id = STF_ISP_PAD_SINK; + else if ((line > VIN_LINE_WR) && (line < VIN_LINE_MAX)) + pad_id = (enum isp_pad_id)vin_map_isp_line(line); + else + pad_id = def; + + return pad_id; +} + +int stf_vin_subdev_init(struct stfcamss *stfcamss) +{ + struct device *dev = stfcamss->dev; + struct stf_vin_dev *vin_dev = &stfcamss->vin_dev; + int i, ret = 0; + + vin_dev->stfcamss = stfcamss; + + vin_dev->isr_ops = devm_kzalloc(dev, sizeof(*vin_dev->isr_ops), + GFP_KERNEL); + if (!vin_dev->isr_ops) + return -ENOMEM; + vin_dev->isr_ops->isr_buffer_done = vin_buffer_done; + vin_dev->isr_ops->isr_change_buffer = vin_change_buffer; + + atomic_set(&vin_dev->ref_count, 0); + + ret = devm_request_irq(dev, + stfcamss->irq[STF_IRQ_VINWR], + stf_vin_wr_irq_handler, + 0, "vin_axiwr_irq", vin_dev); + if (ret) { + dev_err(dev, "Failed to request irq\n"); + goto out; + } + + ret = devm_request_irq(dev, + stfcamss->irq[STF_IRQ_ISP], + stf_vin_isp_irq_handler, + 0, "vin_isp_irq", vin_dev); + if (ret) { + dev_err(dev, "Failed to request isp irq\n"); + goto out; + } + + ret = devm_request_irq(dev, + stfcamss->irq[STF_IRQ_ISPCSIL], + stf_vin_isp_irq_csiline_handler, + 0, "vin_isp_irq_csiline", vin_dev); + if (ret) { + dev_err(dev, "failed to request isp irq csiline\n"); + goto out; + } + + mutex_init(&vin_dev->power_lock); + vin_dev->power_count = 0; + + for (i = 0; i < STF_DUMMY_MODULE_NUMS; i++) { + struct dummy_buffer *dummy_buffer = &vin_dev->dummy_buffer[i]; + + mutex_init(&dummy_buffer->stream_lock); + dummy_buffer->nums = + i == 0 ? VIN_DUMMY_BUFFER_NUMS : ISP_DUMMY_BUFFER_NUMS; + dummy_buffer->stream_count = 0; + dummy_buffer->buffer = + devm_kzalloc(dev, + dummy_buffer->nums * sizeof(struct vin_dummy_buffer), + GFP_KERNEL); + atomic_set(&dummy_buffer->frame_skip, 0); + } + + for (i = VIN_LINE_WR; i < STF_ISP_LINE_MAX + 1; i++) { + struct vin_line *l = &vin_dev->line[i]; + + l->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + l->video_out.stfcamss = stfcamss; + l->id = i; + l->sdev_type = STF_SUBDEV_TYPE_VIN; + l->formats = vin_formats_table[i].fmts; + l->nformats = vin_formats_table[i].nfmts; + spin_lock_init(&l->output_lock); + + mutex_init(&l->stream_lock); + l->stream_count = 0; + mutex_init(&l->power_lock); + l->power_count = 0; + } + + return 0; +out: + return ret; +} + +static enum link vin_get_link(struct media_entity *entity) +{ + struct v4l2_subdev *subdev; + struct media_pad *pad; + bool isp = false; + + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + return LINK_ERROR; + + pad = media_pad_remote_pad_first(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + return LINK_ERROR; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + if (!strncmp(subdev->name, STF_CSI_NAME, + strlen(STF_CSI_NAME))) { + if (isp) + return LINK_CSI_TO_ISP; + else + return LINK_CSI_TO_WR; + } else if (!strncmp(subdev->name, STF_DVP_NAME, + strlen(STF_DVP_NAME))) { + if (isp) + return LINK_DVP_TO_ISP; + else + return LINK_DVP_TO_WR; + } else if (!strncmp(subdev->name, STF_ISP_NAME, + strlen(STF_ISP_NAME))) { + isp = true; + } else { + return LINK_ERROR; + } + } +} + +static int vin_set_power(struct v4l2_subdev *sd, int on) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + struct stf_vin_dev *vin_dev = line_to_vin_dev(line); + struct stfcamss *stfcamss = vin_dev->stfcamss; + enum link link; + + mutex_lock(&line->power_lock); + if (on) { + if (line->power_count == 0) + vin_init_outputs(line); + line->power_count++; + } else { + if (line->power_count == 0) { + dev_err(stfcamss->dev, + "line power off on power_count = 0\n"); + goto exit_line; + } + line->power_count--; + } +exit_line: + mutex_unlock(&line->power_lock); + + mutex_lock(&vin_dev->power_lock); + link = vin_get_link(&sd->entity); + if (link == LINK_ERROR) + goto exit; + + if (on) { + if (vin_dev->power_count == 0) { + pm_runtime_get_sync(stfcamss->dev); + stf_vin_clk_enable(vin_dev, link); + } + vin_dev->power_count++; + } else { + if (vin_dev->power_count == 0) { + dev_err(stfcamss->dev, + "vin_dev power off on power_count=0\n"); + goto exit; + } + if (vin_dev->power_count == 1) { + stf_vin_clk_disable(vin_dev, link); + pm_runtime_put_sync(stfcamss->dev); + } + vin_dev->power_count--; + } +exit: + + mutex_unlock(&vin_dev->power_lock); + + return 0; +} + +static int vin_enable_output(struct vin_line *line) +{ + struct vin_output *output = &line->output; + unsigned long flags; + + spin_lock_irqsave(&line->output_lock, flags); + + output->state = VIN_OUTPUT_IDLE; + + output->buf[0] = vin_buf_get_pending(output); + + if (!output->buf[0] && output->buf[1]) { + output->buf[0] = output->buf[1]; + output->buf[1] = NULL; + } + + if (output->buf[0]) + output->state = VIN_OUTPUT_SINGLE; + + output->sequence = 0; + + vin_output_init_addrs(line); + spin_unlock_irqrestore(&line->output_lock, flags); + return 0; +} + +static int vin_disable_output(struct vin_line *line) +{ + struct vin_output *output = &line->output; + unsigned long flags; + + spin_lock_irqsave(&line->output_lock, flags); + + output->state = VIN_OUTPUT_OFF; + + spin_unlock_irqrestore(&line->output_lock, flags); + return 0; +} + +static u32 vin_line_to_dummy_module(struct vin_line *line) +{ + u32 dummy_module = 0; + + switch (line->id) { + case VIN_LINE_WR: + dummy_module = STF_DUMMY_VIN; + break; + case VIN_LINE_ISP: + dummy_module = STF_DUMMY_ISP; + break; + default: + dummy_module = STF_DUMMY_VIN; + break; + } + + return dummy_module; +} + +static int vin_alloc_dummy_buffer(struct stf_vin_dev *vin_dev, + struct v4l2_mbus_framefmt *fmt, + int dummy_module) +{ + struct device *dev = vin_dev->stfcamss->dev; + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[dummy_module]; + struct vin_dummy_buffer *buffer = NULL; + int ret = 0, i; + u32 aligns; + + for (i = 0; i < dummy_buffer->nums; i++) { + buffer = &vin_dev->dummy_buffer[dummy_module].buffer[i]; + buffer->width = fmt->width; + buffer->height = fmt->height; + buffer->mcode = fmt->code; + if (i == STF_VIN_PAD_SINK) { + aligns = ALIGN(fmt->width * 4, + STFCAMSS_FRAME_WIDTH_ALIGN_8); + buffer->buffer_size = PAGE_ALIGN(aligns * fmt->height); + } else if (i == STF_ISP_PAD_SRC) { + aligns = ALIGN(fmt->width, + STFCAMSS_FRAME_WIDTH_ALIGN_8); + buffer->buffer_size = + PAGE_ALIGN(aligns * fmt->height * 3 / 2); + } else { + continue; + } + + buffer->vaddr = dma_alloc_coherent(dev, + buffer->buffer_size, + &buffer->paddr[0], + GFP_DMA | GFP_KERNEL); + + if (buffer->vaddr) { + if (i == STF_ISP_PAD_SRC) + buffer->paddr[1] = + (dma_addr_t)(buffer->paddr[0] + aligns * fmt->height); + else + dev_dbg(dev, "signal plane\n"); + } + } + + return ret; +} + +static void vin_free_dummy_buffer(struct stf_vin_dev *vin_dev, int dummy_module) +{ + struct device *dev = vin_dev->stfcamss->dev; + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[dummy_module]; + struct vin_dummy_buffer *buffer = NULL; + int i; + + for (i = 0; i < dummy_buffer->nums; i++) { + buffer = &dummy_buffer->buffer[i]; + if (buffer->vaddr) + dma_free_coherent(dev, buffer->buffer_size, + buffer->vaddr, buffer->paddr[0]); + memset(buffer, 0, sizeof(struct vin_dummy_buffer)); + } +} + +static void vin_set_dummy_buffer(struct vin_line *line, u32 pad) +{ + struct stf_vin_dev *vin_dev = line_to_vin_dev(line); + int dummy_module = vin_line_to_dummy_module(line); + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[dummy_module]; + struct vin_dummy_buffer *buffer = NULL; + + switch (pad) { + case STF_VIN_PAD_SINK: + if (line->id == VIN_LINE_WR) { + buffer = &dummy_buffer->buffer[STF_VIN_PAD_SINK]; + stf_vin_wr_set_ping_addr(vin_dev, buffer->paddr[0]); + stf_vin_wr_set_pong_addr(vin_dev, buffer->paddr[0]); + } else { + buffer = &dummy_buffer->buffer[STF_ISP_PAD_SRC]; + stf_vin_isp_set_yuv_addr(vin_dev, + buffer->paddr[0], + buffer->paddr[1]); + } + break; + case STF_ISP_PAD_SRC: + buffer = &dummy_buffer->buffer[STF_ISP_PAD_SRC]; + stf_vin_isp_set_yuv_addr(vin_dev, + buffer->paddr[0], + buffer->paddr[1]); + break; + default: + break; + } +} + +static int vin_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + struct stf_vin_dev *vin_dev = line_to_vin_dev(line); + int dummy_module = vin_line_to_dummy_module(line); + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[dummy_module]; + struct v4l2_mbus_framefmt *fmt; + enum link link; + + fmt = __vin_get_format(line, NULL, + STF_VIN_PAD_SINK, V4L2_SUBDEV_FORMAT_ACTIVE); + mutex_lock(&dummy_buffer->stream_lock); + if (enable) { + if (dummy_buffer->stream_count == 0) { + vin_alloc_dummy_buffer(vin_dev, fmt, dummy_module); + vin_set_dummy_buffer(line, STF_VIN_PAD_SINK); + atomic_set(&dummy_buffer->frame_skip, + VIN_FRAME_DROP_MIN_VAL + 30); + } + dummy_buffer->stream_count++; + } else { + if (dummy_buffer->stream_count == 1) { + vin_free_dummy_buffer(vin_dev, dummy_module); + /* set buffer addr to zero */ + vin_set_dummy_buffer(line, STF_VIN_PAD_SINK); + } else { + vin_set_dummy_buffer(line, + stf_vin_map_isp_pad(line->id, STF_ISP_PAD_SINK)); + } + + dummy_buffer->stream_count--; + } + mutex_unlock(&dummy_buffer->stream_lock); + + mutex_lock(&line->stream_lock); + link = vin_get_link(&sd->entity); + if (link == LINK_ERROR) + goto exit; + + if (enable) { + if (line->stream_count == 0) { + stf_vin_stream_set(vin_dev, link); + if (line->id == VIN_LINE_WR) { + stf_vin_wr_irq_enable(vin_dev, 1); + stf_vin_wr_stream_set(vin_dev); + } + } + line->stream_count++; + } else { + if (line->stream_count == 1 && line->id == VIN_LINE_WR) + stf_vin_wr_irq_enable(vin_dev, 0); + line->stream_count--; + } +exit: + mutex_unlock(&line->stream_lock); + + if (enable) + vin_enable_output(line); + else + vin_disable_output(line); + + return 0; +} + +static struct v4l2_mbus_framefmt * +__vin_get_format(struct vin_line *line, + struct v4l2_subdev_state *state, + unsigned int pad, + enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_format(&line->subdev, state, pad); + return &line->fmt[pad]; +} + +static void vin_try_format(struct vin_line *line, + struct v4l2_subdev_state *state, + unsigned int pad, + struct v4l2_mbus_framefmt *fmt, + enum v4l2_subdev_format_whence which) +{ + unsigned int i; + + switch (pad) { + case STF_VIN_PAD_SINK: + /* Set format on sink pad */ + for (i = 0; i < line->nformats; i++) + if (fmt->code == line->formats[i].code) + break; + + /* If not found, use UYVY as default */ + if (i >= line->nformats) + fmt->code = line->formats[0].code; + + fmt->width = clamp_t(u32, fmt->width, + STFCAMSS_FRAME_MIN_WIDTH, + STFCAMSS_FRAME_MAX_WIDTH); + fmt->height = clamp_t(u32, fmt->height, + STFCAMSS_FRAME_MIN_HEIGHT, + STFCAMSS_FRAME_MAX_HEIGHT); + + fmt->field = V4L2_FIELD_NONE; + fmt->colorspace = V4L2_COLORSPACE_SRGB; + fmt->flags = 0; + break; + + case STF_VIN_PAD_SRC: + /* Set and return a format same as sink pad */ + *fmt = *__vin_get_format(line, state, STF_VIN_PAD_SINK, which); + break; + } + + fmt->colorspace = V4L2_COLORSPACE_SRGB; +} + +static int vin_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + + if (code->index >= line->nformats) + return -EINVAL; + if (code->pad == STF_VIN_PAD_SINK) { + code->code = line->formats[code->index].code; + } else { + struct v4l2_mbus_framefmt *sink_fmt; + + sink_fmt = __vin_get_format(line, state, STF_VIN_PAD_SINK, + code->which); + + code->code = sink_fmt->code; + if (!code->code) + return -EINVAL; + } + code->flags = 0; + + return 0; +} + +static int vin_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt format; + + if (fse->index != 0) + return -EINVAL; + + format.code = fse->code; + format.width = 1; + format.height = 1; + vin_try_format(line, state, fse->pad, &format, fse->which); + fse->min_width = format.width; + fse->min_height = format.height; + + if (format.code != fse->code) + return -EINVAL; + + format.code = fse->code; + format.width = -1; + format.height = -1; + vin_try_format(line, state, fse->pad, &format, fse->which); + fse->max_width = format.width; + fse->max_height = format.height; + + return 0; +} + +static int vin_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_format *fmt) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __vin_get_format(line, state, fmt->pad, fmt->which); + if (!format) + return -EINVAL; + + fmt->format = *format; + + return 0; +} + +static int vin_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_format *fmt) +{ + struct vin_line *line = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __vin_get_format(line, state, fmt->pad, fmt->which); + if (!format) + return -EINVAL; + + mutex_lock(&line->stream_lock); + if (line->stream_count) { + fmt->format = *format; + mutex_unlock(&line->stream_lock); + goto out; + } else { + vin_try_format(line, state, fmt->pad, &fmt->format, fmt->which); + *format = fmt->format; + } + mutex_unlock(&line->stream_lock); + + if (fmt->pad == STF_VIN_PAD_SINK) { + /* Propagate the format from sink to source */ + format = __vin_get_format(line, state, STF_VIN_PAD_SRC, + fmt->which); + + *format = fmt->format; + vin_try_format(line, state, STF_VIN_PAD_SRC, format, + fmt->which); + } + +out: + return 0; +} + +static int vin_init_formats(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh) +{ + struct v4l2_subdev_format format = { + .pad = STF_VIN_PAD_SINK, + .which = fh ? + V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE, + .format = { + .code = MEDIA_BUS_FMT_RGB565_2X8_LE, + .width = 1920, + .height = 1080 + } + }; + + return vin_set_format(sd, fh ? fh->state : NULL, &format); +} + +static void vin_output_init_addrs(struct vin_line *line) +{ + struct vin_output *output = &line->output; + struct stf_vin_dev *vin_dev = line_to_vin_dev(line); + dma_addr_t ping_addr; + dma_addr_t y_addr, uv_addr; + + output->active_buf = 0; + + if (output->buf[0]) { + ping_addr = output->buf[0]->addr[0]; + y_addr = output->buf[0]->addr[0]; + uv_addr = output->buf[0]->addr[1]; + } else { + return; + } + + switch (vin_map_isp_line(line->id)) { + case STF_ISP_LINE_SRC: + stf_vin_isp_set_yuv_addr(vin_dev, y_addr, uv_addr); + break; + default: + if (line->id == VIN_LINE_WR) { + stf_vin_wr_set_ping_addr(vin_dev, ping_addr); + stf_vin_wr_set_pong_addr(vin_dev, ping_addr); + } + break; + } +} + +static void vin_init_outputs(struct vin_line *line) +{ + struct vin_output *output = &line->output; + + output->state = VIN_OUTPUT_OFF; + output->buf[0] = NULL; + output->buf[1] = NULL; + output->active_buf = 0; + INIT_LIST_HEAD(&output->pending_bufs); + INIT_LIST_HEAD(&output->ready_bufs); +} + +static void vin_buf_add_ready(struct vin_output *output, + struct stfcamss_buffer *buffer) +{ + INIT_LIST_HEAD(&buffer->queue); + list_add_tail(&buffer->queue, &output->ready_bufs); +} + +static struct stfcamss_buffer *vin_buf_get_ready(struct vin_output *output) +{ + struct stfcamss_buffer *buffer = NULL; + + if (!list_empty(&output->ready_bufs)) { + buffer = list_first_entry(&output->ready_bufs, + struct stfcamss_buffer, + queue); + list_del(&buffer->queue); + } + + return buffer; +} + +static void vin_buf_add_pending(struct vin_output *output, + struct stfcamss_buffer *buffer) +{ + INIT_LIST_HEAD(&buffer->queue); + list_add_tail(&buffer->queue, &output->pending_bufs); +} + +static struct stfcamss_buffer *vin_buf_get_pending(struct vin_output *output) +{ + struct stfcamss_buffer *buffer = NULL; + + if (!list_empty(&output->pending_bufs)) { + buffer = list_first_entry(&output->pending_bufs, + struct stfcamss_buffer, + queue); + list_del(&buffer->queue); + } + + return buffer; +} + +static void vin_buf_update_on_last(struct vin_line *line) +{ + struct vin_output *output = &line->output; + + switch (output->state) { + case VIN_OUTPUT_CONTINUOUS: + output->state = VIN_OUTPUT_SINGLE; + output->active_buf = !output->active_buf; + break; + case VIN_OUTPUT_SINGLE: + output->state = VIN_OUTPUT_STOPPING; + break; + default: + break; + } +} + +static void vin_buf_update_on_next(struct vin_line *line) +{ + struct vin_output *output = &line->output; + + switch (output->state) { + case VIN_OUTPUT_CONTINUOUS: + output->active_buf = !output->active_buf; + break; + case VIN_OUTPUT_SINGLE: + default: + break; + } +} + +static void vin_buf_update_on_new(struct vin_line *line, + struct vin_output *output, + struct stfcamss_buffer *new_buf) +{ + switch (output->state) { + case VIN_OUTPUT_SINGLE: + vin_buf_add_pending(output, new_buf); + break; + case VIN_OUTPUT_IDLE: + if (!output->buf[0]) { + output->buf[0] = new_buf; + vin_output_init_addrs(line); + output->state = VIN_OUTPUT_SINGLE; + } else { + vin_buf_add_pending(output, new_buf); + } + break; + case VIN_OUTPUT_STOPPING: + if (output->last_buffer) { + output->buf[output->active_buf] = output->last_buffer; + output->last_buffer = NULL; + } + + output->state = VIN_OUTPUT_SINGLE; + vin_buf_add_pending(output, new_buf); + break; + case VIN_OUTPUT_CONTINUOUS: + default: + vin_buf_add_pending(output, new_buf); + break; + } +} + +static void vin_buf_flush(struct vin_output *output, + enum vb2_buffer_state state) +{ + struct stfcamss_buffer *buf; + struct stfcamss_buffer *t; + + list_for_each_entry_safe(buf, t, &output->pending_bufs, queue) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->queue); + } + list_for_each_entry_safe(buf, t, &output->ready_bufs, queue) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->queue); + } +} + +static void vin_buffer_done(struct vin_line *line) +{ + struct stfcamss_buffer *ready_buf; + struct vin_output *output = &line->output; + unsigned long flags; + u64 ts = ktime_get_ns(); + + if (output->state == VIN_OUTPUT_OFF || + output->state == VIN_OUTPUT_RESERVED) + return; + + spin_lock_irqsave(&line->output_lock, flags); + + while ((ready_buf = vin_buf_get_ready(output))) { + ready_buf->vb.vb2_buf.timestamp = ts; + ready_buf->vb.sequence = output->sequence++; + + vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } + + spin_unlock_irqrestore(&line->output_lock, flags); +} + +static void vin_change_buffer(struct vin_line *line) +{ + struct stfcamss_buffer *ready_buf; + struct vin_output *output = &line->output; + struct stf_vin_dev *vin_dev = line_to_vin_dev(line); + dma_addr_t *new_addr; + unsigned long flags; + u32 active_index; + + if (output->state == VIN_OUTPUT_OFF || + output->state == VIN_OUTPUT_STOPPING || + output->state == VIN_OUTPUT_RESERVED || + output->state == VIN_OUTPUT_IDLE) + return; + + spin_lock_irqsave(&line->output_lock, flags); + + active_index = output->active_buf; + + ready_buf = output->buf[active_index]; + if (!ready_buf) { + dev_warn(vin_dev->stfcamss->dev, "Missing ready buf %d %d!\n", + active_index, output->state); + active_index = !active_index; + ready_buf = output->buf[active_index]; + if (!ready_buf) { + dev_err(vin_dev->stfcamss->dev, + "Missing ready buf2 %d %d!\n", + active_index, output->state); + goto out_unlock; + } + } + + /* Get next buffer */ + output->buf[active_index] = vin_buf_get_pending(output); + if (!output->buf[active_index]) { + /* No next buffer - set same address */ + new_addr = ready_buf->addr; + vin_buf_update_on_last(line); + } else { + new_addr = output->buf[active_index]->addr; + vin_buf_update_on_next(line); + } + + if (output->state == VIN_OUTPUT_STOPPING) { + output->last_buffer = ready_buf; + } else { + switch (vin_map_isp_line(line->id)) { + case STF_ISP_LINE_SRC: + stf_vin_isp_set_yuv_addr(vin_dev, + new_addr[0], + new_addr[1]); + break; + default: + if (line->id == VIN_LINE_WR) { + stf_vin_wr_set_ping_addr(vin_dev, new_addr[0]); + stf_vin_wr_set_pong_addr(vin_dev, new_addr[0]); + } + break; + } + + vin_buf_add_ready(output, ready_buf); + } + + spin_unlock_irqrestore(&line->output_lock, flags); + return; + +out_unlock: + spin_unlock_irqrestore(&line->output_lock, flags); +} + +static int vin_queue_buffer(struct stfcamss_video *vid, + struct stfcamss_buffer *buf) +{ + struct vin_line *line = container_of(vid, struct vin_line, video_out); + struct vin_output *output; + unsigned long flags; + + output = &line->output; + + spin_lock_irqsave(&line->output_lock, flags); + + vin_buf_update_on_new(line, output, buf); + + spin_unlock_irqrestore(&line->output_lock, flags); + + return 0; +} + +static int vin_flush_buffers(struct stfcamss_video *vid, + enum vb2_buffer_state state) +{ + struct vin_line *line = container_of(vid, struct vin_line, video_out); + struct vin_output *output = &line->output; + unsigned long flags; + + spin_lock_irqsave(&line->output_lock, flags); + + vin_buf_flush(output, state); + if (output->buf[0]) + vb2_buffer_done(&output->buf[0]->vb.vb2_buf, state); + + if (output->buf[1]) + vb2_buffer_done(&output->buf[1]->vb.vb2_buf, state); + + if (output->last_buffer) { + vb2_buffer_done(&output->last_buffer->vb.vb2_buf, state); + output->last_buffer = NULL; + } + output->buf[0] = NULL; + output->buf[1] = NULL; + + spin_unlock_irqrestore(&line->output_lock, flags); + return 0; +} + +static int vin_link_setup(struct media_entity *entity, + const struct media_pad *local, + const struct media_pad *remote, u32 flags) +{ + if (flags & MEDIA_LNK_FL_ENABLED) + if (media_pad_remote_pad_first(local)) + return -EBUSY; + return 0; +} + +static const struct v4l2_subdev_core_ops vin_core_ops = { + .s_power = vin_set_power, +}; + +static const struct v4l2_subdev_video_ops vin_video_ops = { + .s_stream = vin_set_stream, +}; + +static const struct v4l2_subdev_pad_ops vin_pad_ops = { + .enum_mbus_code = vin_enum_mbus_code, + .enum_frame_size = vin_enum_frame_size, + .get_fmt = vin_get_format, + .set_fmt = vin_set_format, +}; + +static const struct v4l2_subdev_ops vin_v4l2_ops = { + .core = &vin_core_ops, + .video = &vin_video_ops, + .pad = &vin_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops vin_v4l2_internal_ops = { + .open = vin_init_formats, +}; + +static const struct stfcamss_video_ops stfcamss_vin_video_ops = { + .queue_buffer = vin_queue_buffer, + .flush_buffers = vin_flush_buffers, +}; + +static const struct media_entity_operations vin_media_ops = { + .link_setup = vin_link_setup, + .link_validate = v4l2_subdev_link_validate, +}; + +int stf_vin_register(struct stf_vin_dev *vin_dev, struct v4l2_device *v4l2_dev) +{ + struct v4l2_subdev *sd; + struct stfcamss_video *video_out; + struct media_pad *pads; + int ret; + int i; + + for (i = 0; i < STF_ISP_LINE_MAX + 1; i++) { + char name[32]; + char *sub_name = vin_get_line_subdevname(i); + + sd = &vin_dev->line[i].subdev; + pads = vin_dev->line[i].pads; + video_out = &vin_dev->line[i].video_out; + video_out->id = i; + + v4l2_subdev_init(sd, &vin_v4l2_ops); + sd->internal_ops = &vin_v4l2_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d_%s", + STF_VIN_NAME, 0, sub_name); + v4l2_set_subdevdata(sd, &vin_dev->line[i]); + + ret = vin_init_formats(sd, NULL); + if (ret < 0) { + dev_err(vin_dev->stfcamss->dev, + "Failed to init format: %d\n", ret); + goto err_init; + } + + pads[STF_VIN_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + pads[STF_VIN_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE; + + sd->entity.function = + MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER; + sd->entity.ops = &vin_media_ops; + ret = media_entity_pads_init(&sd->entity, + STF_VIN_PADS_NUM, pads); + if (ret < 0) { + dev_err(vin_dev->stfcamss->dev, + "Failed to init media entity: %d\n", + ret); + goto err_init; + } + + ret = v4l2_device_register_subdev(v4l2_dev, sd); + if (ret < 0) { + dev_err(vin_dev->stfcamss->dev, + "Failed to register subdev: %d\n", ret); + goto err_reg_subdev; + } + + video_out->ops = &stfcamss_vin_video_ops; + video_out->bpl_alignment = 16 * 8; + + snprintf(name, ARRAY_SIZE(name), "%s_%s%d", + sd->name, "video", i); + ret = stf_video_register(video_out, v4l2_dev, name); + if (ret < 0) { + dev_err(vin_dev->stfcamss->dev, + "Failed to register video node: %d\n", ret); + goto err_vid_reg; + } + + ret = media_create_pad_link( + &sd->entity, STF_VIN_PAD_SRC, + &video_out->vdev.entity, 0, + MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); + if (ret < 0) { + dev_err(vin_dev->stfcamss->dev, + "Failed to link %s->%s entities: %d\n", + sd->entity.name, video_out->vdev.entity.name, + ret); + goto err_create_link; + } + } + + return 0; + +err_create_link: + stf_video_unregister(video_out); +err_vid_reg: + v4l2_device_unregister_subdev(sd); +err_reg_subdev: + media_entity_cleanup(&sd->entity); +err_init: + for (i--; i >= 0; i--) { + sd = &vin_dev->line[i].subdev; + video_out = &vin_dev->line[i].video_out; + + stf_video_unregister(video_out); + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + } + return ret; +} + +int stf_vin_unregister(struct stf_vin_dev *vin_dev) +{ + struct v4l2_subdev *sd; + struct stfcamss_video *video_out; + int i; + + mutex_destroy(&vin_dev->power_lock); + for (i = 0; i < STF_DUMMY_MODULE_NUMS; i++) + mutex_destroy(&vin_dev->dummy_buffer[i].stream_lock); + + for (i = 0; i < STF_ISP_LINE_MAX + 1; i++) { + sd = &vin_dev->line[i].subdev; + video_out = &vin_dev->line[i].video_out; + + stf_video_unregister(video_out); + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + mutex_destroy(&vin_dev->line[i].stream_lock); + mutex_destroy(&vin_dev->line[i].power_lock); + } + return 0; +} diff --git a/drivers/media/platform/starfive/stf_vin.h b/drivers/media/platform/starfive/stf_vin.h new file mode 100644 index 000000000000..9db71d09e044 --- /dev/null +++ b/drivers/media/platform/starfive/stf_vin.h @@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * stf_vin.h + * + * StarFive Camera Subsystem - VIN Module + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#ifndef STF_VIN_H +#define STF_VIN_H + +#include +#include +#include + +#include "stf_video.h" + +#define SYSCONSAIF_SYSCFG(x) (x) + +/* syscon offset 0 */ +#define U0_VIN_CNFG_AXI_DVP_EN BIT(2) + +/* syscon offset 20 */ +#define U0_VIN_CHANNEL_SEL_MASK GENMASK(3, 0) +#define U0_VIN_AXIWR0_EN BIT(4) +#define CHANNEL(x) ((x) << 0) + +/* syscon offset 32 */ +#define U0_VIN_INTR_CLEAN BIT(0) +#define U0_VIN_INTR_M BIT(1) +#define U0_VIN_PIX_CNT_END_MASK GENMASK(12, 2) +#define U0_VIN_PIX_CT_MASK GENMASK(14, 13) +#define U0_VIN_PIXEL_HEIGH_BIT_SEL_MAKS GENMASK(16, 15) + +#define PIX_CNT_END(x) ((x) << 2) +#define PIX_CT(x) ((x) << 13) +#define PIXEL_HEIGH_BIT_SEL(x) ((x) << 15) + +/* syscon offset 36 */ +#define U0_VIN_CNFG_DVP_HS_POS BIT(1) +#define U0_VIN_CNFG_DVP_SWAP_EN BIT(2) +#define U0_VIN_CNFG_DVP_VS_POS BIT(3) +#define U0_VIN_CNFG_GEN_EN_AXIRD BIT(4) +#define U0_VIN_CNFG_ISP_DVP_EN0 BIT(5) +#define U0_VIN_MIPI_BYTE_EN_ISP0(n) ((n) << 6) +#define U0_VIN_MIPI_CHANNEL_SEL0(n) ((n) << 8) +#define U0_VIN_P_I_MIPI_HAEDER_EN0(n) ((n) << 12) +#define U0_VIN_PIX_NUM(n) ((n) << 13) +#define U0_VIN_MIPI_BYTE_EN_ISP0_MASK GENMASK(7, 6) +#define U0_VIN_MIPI_CHANNEL_SEL0_MASK GENMASK(11, 8) +#define U0_VIN_P_I_MIPI_HAEDER_EN0_MASK BIT(12) +#define U0_VIN_PIX_NUM_MASK GENMASK(16, 13) + +#define STF_VIN_PAD_SINK 0 +#define STF_VIN_PAD_SRC 1 +#define STF_VIN_PADS_NUM 2 + +#define ISP_DUMMY_BUFFER_NUMS STF_ISP_PAD_MAX +#define VIN_DUMMY_BUFFER_NUMS 1 + +enum { + STF_DUMMY_VIN, + STF_DUMMY_ISP, + STF_DUMMY_MODULE_NUMS, +}; + +enum link { + LINK_ERROR = -1, + LINK_DVP_TO_WR, + LINK_DVP_TO_ISP, + LINK_CSI_TO_WR, + LINK_CSI_TO_ISP, +}; + +struct vin_format { + u32 code; + u8 bpp; +}; + +struct vin_format_table { + const struct vin_format *fmts; + int nfmts; +}; + +enum vin_output_state { + VIN_OUTPUT_OFF, + VIN_OUTPUT_RESERVED, + VIN_OUTPUT_SINGLE, + VIN_OUTPUT_CONTINUOUS, + VIN_OUTPUT_IDLE, + VIN_OUTPUT_STOPPING +}; + +struct vin_output { + int active_buf; + struct stfcamss_buffer *buf[2]; + struct stfcamss_buffer *last_buffer; + struct list_head pending_bufs; + struct list_head ready_bufs; + enum vin_output_state state; + unsigned int sequence; + unsigned int frame_skip; +}; + +/* The vin output lines */ +enum vin_line_id { + VIN_LINE_NONE = -1, + VIN_LINE_WR = 0, + VIN_LINE_ISP, + VIN_LINE_MAX, +}; + +struct vin_line { + enum stf_subdev_type sdev_type; /* must be frist */ + enum vin_line_id id; + struct v4l2_subdev subdev; + struct media_pad pads[STF_VIN_PADS_NUM]; + struct v4l2_mbus_framefmt fmt[STF_VIN_PADS_NUM]; + struct stfcamss_video video_out; + struct mutex stream_lock; /* serialize stream control */ + int stream_count; + struct mutex power_lock; /* serialize pipeline control in power process*/ + int power_count; + struct vin_output output; /* pipeline and stream states */ + spinlock_t output_lock; + const struct vin_format *formats; + unsigned int nformats; +}; + +struct vin_dummy_buffer { + dma_addr_t paddr[3]; + void *vaddr; + u32 buffer_size; + u32 width; + u32 height; + u32 mcode; +}; + +struct dummy_buffer { + struct vin_dummy_buffer *buffer; + u32 nums; + struct mutex stream_lock; /* protects buffer data */ + int stream_count; + atomic_t frame_skip; +}; + +struct vin_isr_ops { + void (*isr_buffer_done)(struct vin_line *line); + void (*isr_change_buffer)(struct vin_line *line); +}; + +struct stf_vin_dev { + struct stfcamss *stfcamss; + struct vin_line line[VIN_LINE_MAX]; + struct dummy_buffer dummy_buffer[STF_DUMMY_MODULE_NUMS]; + struct vin_isr_ops *isr_ops; + atomic_t ref_count; + struct mutex power_lock; /* serialize power control*/ + int power_count; +}; + +int stf_vin_clk_enable(struct stf_vin_dev *vin_dev, enum link link); +int stf_vin_clk_disable(struct stf_vin_dev *vin_dev, enum link link); +int stf_vin_wr_stream_set(struct stf_vin_dev *vin_dev); +int stf_vin_stream_set(struct stf_vin_dev *vin_dev, enum link link); +void stf_vin_wr_irq_enable(struct stf_vin_dev *vin_dev, int enable); +void stf_vin_wr_set_ping_addr(struct stf_vin_dev *vin_dev, dma_addr_t addr); +void stf_vin_wr_set_pong_addr(struct stf_vin_dev *vin_dev, dma_addr_t addr); +void stf_vin_isp_set_yuv_addr(struct stf_vin_dev *vin_dev, + dma_addr_t y_addr, dma_addr_t uv_addr); +irqreturn_t stf_vin_wr_irq_handler(int irq, void *priv); +irqreturn_t stf_vin_isp_irq_handler(int irq, void *priv); +irqreturn_t stf_vin_isp_irq_csiline_handler(int irq, void *priv); +int stf_vin_subdev_init(struct stfcamss *stfcamss); +int stf_vin_register(struct stf_vin_dev *vin_dev, struct v4l2_device *v4l2_dev); +int stf_vin_unregister(struct stf_vin_dev *vin_dev); +enum isp_pad_id stf_vin_map_isp_pad(enum vin_line_id line, enum isp_pad_id def); + +#endif /* STF_VIN_H */ diff --git a/drivers/media/platform/starfive/stf_vin_hw_ops.c b/drivers/media/platform/starfive/stf_vin_hw_ops.c new file mode 100644 index 000000000000..a4adb5e4ea60 --- /dev/null +++ b/drivers/media/platform/starfive/stf_vin_hw_ops.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * stf_vin_hw_ops.c + * + * Register interface file for StarFive VIN module driver + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ +#include "stf_camss.h" + +static void vin_intr_clear(struct stfcamss *stfcamss) +{ + stf_syscon_reg_set_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_CLEAN); + stf_syscon_reg_clear_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_CLEAN); +} + +irqreturn_t stf_vin_wr_irq_handler(int irq, void *priv) +{ + struct stf_vin_dev *vin_dev = priv; + struct stfcamss *stfcamss = vin_dev->stfcamss; + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[STF_DUMMY_VIN]; + + if (atomic_dec_if_positive(&dummy_buffer->frame_skip) < 0) { + vin_dev->isr_ops->isr_change_buffer(&vin_dev->line[VIN_LINE_WR]); + vin_dev->isr_ops->isr_buffer_done(&vin_dev->line[VIN_LINE_WR]); + } + + vin_intr_clear(stfcamss); + + return IRQ_HANDLED; +} + +irqreturn_t stf_vin_isp_irq_handler(int irq, void *priv) +{ + struct stf_vin_dev *vin_dev = priv; + u32 int_status; + + int_status = stf_isp_reg_read(vin_dev->stfcamss, ISP_REG_ISP_CTRL_0); + + if (int_status & ISPC_INTS) { + if ((int_status & ISPC_ENUO)) + vin_dev->isr_ops->isr_buffer_done( + &vin_dev->line[VIN_LINE_ISP]); + + /* clear interrupt */ + stf_isp_reg_write(vin_dev->stfcamss, + ISP_REG_ISP_CTRL_0, + (int_status & ~EN_INT_ALL) | + EN_INT_ISP_DONE | + EN_INT_CSI_DONE | + EN_INT_SC_DONE); + } + + return IRQ_HANDLED; +} + +irqreturn_t stf_vin_isp_irq_csiline_handler(int irq, void *priv) +{ + struct stf_vin_dev *vin_dev = priv; + struct stf_isp_dev *isp_dev; + u32 int_status; + + isp_dev = &vin_dev->stfcamss->isp_dev; + + int_status = stf_isp_reg_read(vin_dev->stfcamss, ISP_REG_ISP_CTRL_0); + if (int_status & ISPC_SCFEINT) { + struct dummy_buffer *dummy_buffer = + &vin_dev->dummy_buffer[STF_DUMMY_ISP]; + + if (atomic_dec_if_positive(&dummy_buffer->frame_skip) < 0) { + if ((int_status & ISPC_ENUO)) + vin_dev->isr_ops->isr_change_buffer( + &vin_dev->line[VIN_LINE_ISP]); + } + + stf_isp_reg_set_bit(isp_dev->stfcamss, ISP_REG_CSIINTS, + CSI_INTS_MASK, CSI_INTS(0x3)); + stf_isp_reg_set_bit(isp_dev->stfcamss, ISP_REG_IESHD, + SHAD_UP_M | SHAD_UP_EN, 0x3); + + /* clear interrupt */ + stf_isp_reg_write(vin_dev->stfcamss, ISP_REG_ISP_CTRL_0, + (int_status & ~EN_INT_ALL) | EN_INT_LINE_INT); + } + + return IRQ_HANDLED; +} + +int stf_vin_clk_enable(struct stf_vin_dev *vin_dev, enum link link) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + clk_set_rate(stfcamss->sys_clk[STF_CLK_APB_FUNC].clk, 49500000); + + switch (link) { + case LINK_CSI_TO_WR: + clk_set_rate(stfcamss->sys_clk[STF_CLK_MIPI_RX0_PXL].clk, + 198000000); + reset_control_deassert(stfcamss->sys_rst[STF_RST_AXIWR].rstc); + clk_set_parent(stfcamss->sys_clk[STF_CLK_AXIWR].clk, + stfcamss->sys_clk[STF_CLK_MIPI_RX0_PXL].clk); + break; + case LINK_CSI_TO_ISP: + clk_set_rate(stfcamss->sys_clk[STF_CLK_MIPI_RX0_PXL].clk, + 198000000); + clk_set_parent(stfcamss->sys_clk[STF_CLK_WRAPPER_CLK_C].clk, + stfcamss->sys_clk[STF_CLK_MIPI_RX0_PXL].clk); + break; + case LINK_DVP_TO_WR: + case LINK_DVP_TO_ISP: + default: + return -EINVAL; + } + + return 0; +} + +int stf_vin_clk_disable(struct stf_vin_dev *vin_dev, enum link link) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + switch (link) { + case LINK_CSI_TO_WR: + reset_control_assert(stfcamss->sys_rst[STF_RST_AXIWR].rstc); + break; + case LINK_CSI_TO_ISP: + break; + case LINK_DVP_TO_WR: + case LINK_DVP_TO_ISP: + default: + return -EINVAL; + } + + return 0; +} + +int stf_vin_wr_stream_set(struct stf_vin_dev *vin_dev) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + /* make the axiwr alway on */ + stf_syscon_reg_set_bit(stfcamss, SYSCONSAIF_SYSCFG(20), + U0_VIN_AXIWR0_EN); + + return 0; +} + +int stf_vin_stream_set(struct stf_vin_dev *vin_dev, enum link link) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + u32 val; + + switch (link) { + case LINK_CSI_TO_WR: + val = stf_syscon_reg_read(stfcamss, SYSCONSAIF_SYSCFG(20)); + val &= ~U0_VIN_CHANNEL_SEL_MASK; + val |= CHANNEL(0); + stf_syscon_reg_write(stfcamss, SYSCONSAIF_SYSCFG(20), val); + + val = stf_syscon_reg_read(stfcamss, SYSCONSAIF_SYSCFG(28)); + val &= ~U0_VIN_PIX_CT_MASK; + val |= PIX_CT(1); + + val &= ~U0_VIN_PIXEL_HEIGH_BIT_SEL_MAKS; + val |= PIXEL_HEIGH_BIT_SEL(0); + + val &= ~U0_VIN_PIX_CNT_END_MASK; + val |= PIX_CNT_END(IMAGE_MAX_WIDTH / 4 - 1); + + stf_syscon_reg_write(stfcamss, SYSCONSAIF_SYSCFG(28), val); + break; + case LINK_CSI_TO_ISP: + val = stf_syscon_reg_read(stfcamss, SYSCONSAIF_SYSCFG(36)); + val &= ~U0_VIN_MIPI_BYTE_EN_ISP0_MASK; + val |= U0_VIN_MIPI_BYTE_EN_ISP0(0); + + val &= ~U0_VIN_MIPI_CHANNEL_SEL0_MASK; + val |= U0_VIN_MIPI_CHANNEL_SEL0(0); + + val &= ~U0_VIN_PIX_NUM_MASK; + val |= U0_VIN_PIX_NUM(0); + + val &= ~U0_VIN_P_I_MIPI_HAEDER_EN0_MASK; + val |= U0_VIN_P_I_MIPI_HAEDER_EN0(1); + + stf_syscon_reg_write(stfcamss, SYSCONSAIF_SYSCFG(36), val); + break; + case LINK_DVP_TO_WR: + case LINK_DVP_TO_ISP: + default: + return -EINVAL; + } + + return 0; +} + +void stf_vin_wr_irq_enable(struct stf_vin_dev *vin_dev, int enable) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + if (enable) { + stf_syscon_reg_clear_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_M); + } else { + /* clear vin interrupt */ + stf_syscon_reg_set_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_CLEAN); + stf_syscon_reg_clear_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_CLEAN); + stf_syscon_reg_set_bit(stfcamss, SYSCONSAIF_SYSCFG(28), + U0_VIN_INTR_M); + } +} + +void stf_vin_wr_set_ping_addr(struct stf_vin_dev *vin_dev, dma_addr_t addr) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + /* set the start address */ + stf_syscon_reg_write(stfcamss, SYSCONSAIF_SYSCFG(32), (long)addr); +} + +void stf_vin_wr_set_pong_addr(struct stf_vin_dev *vin_dev, dma_addr_t addr) +{ + struct stfcamss *stfcamss = vin_dev->stfcamss; + + /* set the start address */ + stf_syscon_reg_write(stfcamss, SYSCONSAIF_SYSCFG(24), (long)addr); +} + +void stf_vin_isp_set_yuv_addr(struct stf_vin_dev *vin_dev, + dma_addr_t y_addr, dma_addr_t uv_addr) +{ + stf_isp_reg_write(vin_dev->stfcamss, + ISP_REG_Y_PLANE_START_ADDR, y_addr); + stf_isp_reg_write(vin_dev->stfcamss, + ISP_REG_UV_PLANE_START_ADDR, uv_addr); +}