diff options
Diffstat (limited to 'drivers/staging/media/rkisp1/rkisp1-dev.c')
| -rw-r--r-- | drivers/staging/media/rkisp1/rkisp1-dev.c | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c new file mode 100644 index 000000000000..558126e66465 --- /dev/null +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c @@ -0,0 +1,574 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Rockchip ISP1 Driver - Base driver + * + * Copyright (C) 2019 Collabora, Ltd. + * + * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd. + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include <linux/clk.h> +#include <linux/debugfs.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/of_platform.h> +#include <linux/pinctrl/consumer.h> +#include <linux/phy/phy.h> +#include <linux/phy/phy-mipi-dphy.h> +#include <media/v4l2-fwnode.h> + +#include "rkisp1-common.h" + +/* + * ISP Details + * ----------- + * + * ISP Comprises with: + * MIPI serial camera interface + * Image Signal Processing + * Many Image Enhancement Blocks + * Crop + * Resizer + * RBG display ready image + * Image Rotation + * + * ISP Block Diagram + * ----------------- + * rkisp1-resizer.c rkisp1-capture.c + * |====================| |=======================| + * rkisp1-isp.c Main Picture Path + * |==========================| |===============================================| + * +-----------+ +--+--+--+--+ +--------+ +--------+ +-----------+ + * | | | | | | | | | | | | | + * +--------+ |\ | | | | | | | -->| Crop |->| RSZ |------------->| | + * | MIPI |--->| \ | | | | | | | | | | | | | | + * +--------+ | | | | |IE|IE|IE|IE| | +--------+ +--------+ | Memory | + * |MUX|--->| ISP |->|0 |1 |2 |3 |---+ | Interface | + * +--------+ | | | | | | | | | | +--------+ +--------+ +--------+ | | + * |Parallel|--->| / | | | | | | | | | | | | | | | | + * +--------+ |/ | | | | | | | -->| Crop |->| RSZ |->| RGB |->| | + * | | | | | | | | | | | | Rotate | | | + * +-----------+ +--+--+--+--+ +--------+ +--------+ +--------+ +-----------+ + * ^ + * +--------+ | |===============================================| + * | DMA |------------------------------------+ Self Picture Path + * +--------+ + * + * rkisp1-stats.c rkisp1-params.c + * |===============| |===============| + * +---------------+ +---------------+ + * | | | | + * | ISP | | ISP | + * | | | | + * +---------------+ +---------------+ + * + * + * Media Topology + * -------------- + * +----------+ +----------+ + * | Sensor 2 | | Sensor X | + * ------------ ... ------------ + * | 0 | | 0 | + * +----------+ +----------+ +-----------+ + * \ | | params | + * \ | | (output) | + * +----------+ \ | +-----------+ + * | Sensor 1 | v v | + * ------------ +------+------+ | + * | 0 |----->| 0 | 1 |<---------+ + * +----------+ |------+------| + * | ISP | + * |------+------| + * +-------------| 2 | 3 |----------+ + * | +------+------+ | + * | | | + * v v v + * +- ---------+ +-----------+ +-----------+ + * | 0 | | 0 | | stats | + * ------------- ------------- | (capture) | + * | Resizer | | Resizer | +-----------+ + * ------------| ------------| + * | 1 | | 1 | + * +-----------+ +-----------+ + * | | + * v v + * +-----------+ +-----------+ + * | selfpath | | mainpath | + * | (capture) | | (capture) | + * +-----------+ +-----------+ + */ + +struct rkisp1_match_data { + const char * const *clks; + unsigned int size; +}; + +/* ---------------------------------------------------------------------------- + * Sensor DT bindings + */ + +static int rkisp1_create_links(struct rkisp1_device *rkisp1) +{ + struct media_entity *source, *sink; + unsigned int flags, source_pad; + struct v4l2_subdev *sd; + unsigned int i; + int ret; + + /* sensor links */ + flags = MEDIA_LNK_FL_ENABLED; + list_for_each_entry(sd, &rkisp1->v4l2_dev.subdevs, list) { + if (sd == &rkisp1->isp.sd || + sd == &rkisp1->resizer_devs[RKISP1_MAINPATH].sd || + sd == &rkisp1->resizer_devs[RKISP1_SELFPATH].sd) + continue; + + ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode, + MEDIA_PAD_FL_SOURCE); + if (ret) { + dev_err(sd->dev, "failed to find src pad for %s\n", + sd->name); + return ret; + } + source_pad = ret; + + ret = media_create_pad_link(&sd->entity, source_pad, + &rkisp1->isp.sd.entity, + RKISP1_ISP_PAD_SINK_VIDEO, + flags); + if (ret) + return ret; + + flags = 0; + } + + flags = MEDIA_LNK_FL_ENABLED; + + /* create ISP->RSZ->CAP links */ + for (i = 0; i < 2; i++) { + source = &rkisp1->isp.sd.entity; + sink = &rkisp1->resizer_devs[i].sd.entity; + ret = media_create_pad_link(source, RKISP1_ISP_PAD_SOURCE_VIDEO, + sink, RKISP1_RSZ_PAD_SINK, flags); + if (ret) + return ret; + + source = sink; + sink = &rkisp1->capture_devs[i].vnode.vdev.entity; + ret = media_create_pad_link(source, RKISP1_RSZ_PAD_SRC, + sink, 0, flags); + if (ret) + return ret; + } + + /* params links */ + source = &rkisp1->params.vnode.vdev.entity; + sink = &rkisp1->isp.sd.entity; + ret = media_create_pad_link(source, 0, sink, + RKISP1_ISP_PAD_SINK_PARAMS, flags); + if (ret) + return ret; + + /* 3A stats links */ + source = &rkisp1->isp.sd.entity; + sink = &rkisp1->stats.vnode.vdev.entity; + return media_create_pad_link(source, RKISP1_ISP_PAD_SOURCE_STATS, + sink, 0, flags); +} + +static int rkisp1_subdev_notifier_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) +{ + struct rkisp1_device *rkisp1 = + container_of(notifier, struct rkisp1_device, notifier); + struct rkisp1_sensor_async *s_asd = + container_of(asd, struct rkisp1_sensor_async, asd); + + s_asd->pixel_rate_ctrl = v4l2_ctrl_find(sd->ctrl_handler, + V4L2_CID_PIXEL_RATE); + s_asd->sd = sd; + s_asd->dphy = devm_phy_get(rkisp1->dev, "dphy"); + if (IS_ERR(s_asd->dphy)) { + if (PTR_ERR(s_asd->dphy) != -EPROBE_DEFER) + dev_err(rkisp1->dev, "Couldn't get the MIPI D-PHY\n"); + return PTR_ERR(s_asd->dphy); + } + + phy_init(s_asd->dphy); + + return 0; +} + +static void rkisp1_subdev_notifier_unbind(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) +{ + struct rkisp1_sensor_async *s_asd = + container_of(asd, struct rkisp1_sensor_async, asd); + + phy_exit(s_asd->dphy); +} + +static int rkisp1_subdev_notifier_complete(struct v4l2_async_notifier *notifier) +{ + struct rkisp1_device *rkisp1 = + container_of(notifier, struct rkisp1_device, notifier); + int ret; + + mutex_lock(&rkisp1->media_dev.graph_mutex); + ret = rkisp1_create_links(rkisp1); + if (ret) + goto unlock; + ret = v4l2_device_register_subdev_nodes(&rkisp1->v4l2_dev); + if (ret) + goto unlock; + + dev_dbg(rkisp1->dev, "Async subdev notifier completed\n"); + +unlock: + mutex_unlock(&rkisp1->media_dev.graph_mutex); + return ret; +} + +static int rkisp1_fwnode_parse(struct device *dev, + struct v4l2_fwnode_endpoint *vep, + struct v4l2_async_subdev *asd) +{ + struct rkisp1_sensor_async *s_asd = + container_of(asd, struct rkisp1_sensor_async, asd); + + if (vep->bus_type != V4L2_MBUS_CSI2_DPHY) { + dev_err(dev, "Only CSI2 bus type is currently supported\n"); + return -EINVAL; + } + + if (vep->base.port != 0) { + dev_err(dev, "The ISP has only port 0\n"); + return -EINVAL; + } + + s_asd->mbus.type = vep->bus_type; + s_asd->mbus.flags = vep->bus.mipi_csi2.flags; + s_asd->lanes = vep->bus.mipi_csi2.num_data_lanes; + + switch (vep->bus.mipi_csi2.num_data_lanes) { + case 1: + s_asd->mbus.flags |= V4L2_MBUS_CSI2_1_LANE; + break; + case 2: + s_asd->mbus.flags |= V4L2_MBUS_CSI2_2_LANE; + break; + case 3: + s_asd->mbus.flags |= V4L2_MBUS_CSI2_3_LANE; + break; + case 4: + s_asd->mbus.flags |= V4L2_MBUS_CSI2_4_LANE; + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct v4l2_async_notifier_operations rkisp1_subdev_notifier_ops = { + .bound = rkisp1_subdev_notifier_bound, + .unbind = rkisp1_subdev_notifier_unbind, + .complete = rkisp1_subdev_notifier_complete, +}; + +static int rkisp1_subdev_notifier(struct rkisp1_device *rkisp1) +{ + struct v4l2_async_notifier *ntf = &rkisp1->notifier; + struct device *dev = rkisp1->dev; + int ret; + + v4l2_async_notifier_init(ntf); + + ret = v4l2_async_notifier_parse_fwnode_endpoints_by_port(dev, ntf, + sizeof(struct rkisp1_sensor_async), + 0, rkisp1_fwnode_parse); + if (ret) + return ret; + + if (list_empty(&ntf->asd_list)) + return -ENODEV; + + ntf->ops = &rkisp1_subdev_notifier_ops; + + return v4l2_async_notifier_register(&rkisp1->v4l2_dev, ntf); +} + +/* ---------------------------------------------------------------------------- + * Power + */ + +static int __maybe_unused rkisp1_runtime_suspend(struct device *dev) +{ + struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(rkisp1->clk_size, rkisp1->clks); + return pinctrl_pm_select_sleep_state(dev); +} + +static int __maybe_unused rkisp1_runtime_resume(struct device *dev) +{ + struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); + int ret; + + ret = pinctrl_pm_select_default_state(dev); + if (ret) + return ret; + ret = clk_bulk_prepare_enable(rkisp1->clk_size, rkisp1->clks); + if (ret) + return ret; + + return 0; +} + +static const struct dev_pm_ops rkisp1_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(rkisp1_runtime_suspend, rkisp1_runtime_resume, NULL) +}; + +/* ---------------------------------------------------------------------------- + * Core + */ + +static int rkisp1_entities_register(struct rkisp1_device *rkisp1) +{ + int ret; + + ret = rkisp1_isp_register(rkisp1, &rkisp1->v4l2_dev); + if (ret) + return ret; + + ret = rkisp1_resizer_devs_register(rkisp1); + if (ret) + goto err_unreg_isp_subdev; + + ret = rkisp1_capture_devs_register(rkisp1); + if (ret) + goto err_unreg_resizer_devs; + + ret = rkisp1_stats_register(&rkisp1->stats, &rkisp1->v4l2_dev, rkisp1); + if (ret) + goto err_unreg_capture_devs; + + ret = rkisp1_params_register(&rkisp1->params, + &rkisp1->v4l2_dev, rkisp1); + if (ret) + goto err_unreg_stats; + + ret = rkisp1_subdev_notifier(rkisp1); + if (ret) { + dev_err(rkisp1->dev, + "Failed to register subdev notifier(%d)\n", ret); + goto err_unreg_params; + } + + return 0; +err_unreg_params: + rkisp1_params_unregister(&rkisp1->params); +err_unreg_stats: + rkisp1_stats_unregister(&rkisp1->stats); +err_unreg_capture_devs: + rkisp1_capture_devs_unregister(rkisp1); +err_unreg_resizer_devs: + rkisp1_resizer_devs_unregister(rkisp1); +err_unreg_isp_subdev: + rkisp1_isp_unregister(rkisp1); + return ret; +} + +static irqreturn_t rkisp1_isr(int irq, void *ctx) +{ + struct device *dev = ctx; + struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); + + /* + * Call rkisp1_capture_isr() first to handle the frame that + * potentially completed using the current frame_sequence number before + * it is potentially incremented by rkisp1_isp_isr() in the vertical + * sync. + */ + rkisp1_capture_isr(rkisp1); + rkisp1_isp_isr(rkisp1); + rkisp1_mipi_isr(rkisp1); + + return IRQ_HANDLED; +} + +static const char * const rk3399_isp_clks[] = { + "clk_isp", + "aclk_isp", + "hclk_isp", + "aclk_isp_wrap", + "hclk_isp_wrap", +}; + +static const struct rkisp1_match_data rk3399_isp_clk_data = { + .clks = rk3399_isp_clks, + .size = ARRAY_SIZE(rk3399_isp_clks), +}; + +static const struct of_device_id rkisp1_of_match[] = { + { + .compatible = "rockchip,rk3399-cif-isp", + .data = &rk3399_isp_clk_data, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, rkisp1_of_match); + +static void rkisp1_debug_init(struct rkisp1_device *rkisp1) +{ + struct rkisp1_debug *debug = &rkisp1->debug; + + debug->debugfs_dir = debugfs_create_dir(RKISP1_DRIVER_NAME, NULL); + if (!debug->debugfs_dir) { + dev_dbg(rkisp1->dev, "failed to create debugfs directory\n"); + return; + } + debugfs_create_ulong("data_loss", 0444, debug->debugfs_dir, + &debug->data_loss); + debugfs_create_ulong("pic_size_error", 0444, debug->debugfs_dir, + &debug->pic_size_error); + debugfs_create_ulong("mipi_error", 0444, debug->debugfs_dir, + &debug->mipi_error); + debugfs_create_ulong("stats_error", 0444, debug->debugfs_dir, + &debug->stats_error); + debugfs_create_ulong("mp_stop_timeout", 0444, debug->debugfs_dir, + &debug->stop_timeout[RKISP1_MAINPATH]); + debugfs_create_ulong("sp_stop_timeout", 0444, debug->debugfs_dir, + &debug->stop_timeout[RKISP1_SELFPATH]); + debugfs_create_ulong("mp_frame_drop", 0444, debug->debugfs_dir, + &debug->frame_drop[RKISP1_MAINPATH]); + debugfs_create_ulong("sp_frame_drop", 0444, debug->debugfs_dir, + &debug->frame_drop[RKISP1_SELFPATH]); +} + +static int rkisp1_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + const struct rkisp1_match_data *clk_data; + const struct of_device_id *match; + struct device *dev = &pdev->dev; + struct rkisp1_device *rkisp1; + struct v4l2_device *v4l2_dev; + unsigned int i; + int ret, irq; + + match = of_match_node(rkisp1_of_match, node); + rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL); + if (!rkisp1) + return -ENOMEM; + + dev_set_drvdata(dev, rkisp1); + rkisp1->dev = dev; + + rkisp1->base_addr = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rkisp1->base_addr)) + return PTR_ERR(rkisp1->base_addr); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ret = devm_request_irq(dev, irq, rkisp1_isr, IRQF_SHARED, + dev_driver_string(dev), dev); + if (ret) { + dev_err(dev, "request irq failed: %d\n", ret); + return ret; + } + + rkisp1->irq = irq; + clk_data = match->data; + + for (i = 0; i < clk_data->size; i++) + rkisp1->clks[i].id = clk_data->clks[i]; + ret = devm_clk_bulk_get(dev, clk_data->size, rkisp1->clks); + if (ret) + return ret; + rkisp1->clk_size = clk_data->size; + + pm_runtime_enable(&pdev->dev); + + strscpy(rkisp1->media_dev.model, RKISP1_DRIVER_NAME, + sizeof(rkisp1->media_dev.model)); + rkisp1->media_dev.dev = &pdev->dev; + strscpy(rkisp1->media_dev.bus_info, + "platform: " RKISP1_DRIVER_NAME, + sizeof(rkisp1->media_dev.bus_info)); + media_device_init(&rkisp1->media_dev); + + v4l2_dev = &rkisp1->v4l2_dev; + v4l2_dev->mdev = &rkisp1->media_dev; + strscpy(v4l2_dev->name, RKISP1_DRIVER_NAME, sizeof(v4l2_dev->name)); + + ret = v4l2_device_register(rkisp1->dev, &rkisp1->v4l2_dev); + if (ret) + return ret; + + ret = media_device_register(&rkisp1->media_dev); + if (ret) { + dev_err(dev, "Failed to register media device: %d\n", ret); + goto err_unreg_v4l2_dev; + } + + ret = rkisp1_entities_register(rkisp1); + if (ret) + goto err_unreg_media_dev; + + rkisp1_debug_init(rkisp1); + + return 0; + +err_unreg_media_dev: + media_device_unregister(&rkisp1->media_dev); +err_unreg_v4l2_dev: + v4l2_device_unregister(&rkisp1->v4l2_dev); + pm_runtime_disable(&pdev->dev); + return ret; +} + +static int rkisp1_remove(struct platform_device *pdev) +{ + struct rkisp1_device *rkisp1 = platform_get_drvdata(pdev); + + v4l2_async_notifier_unregister(&rkisp1->notifier); + v4l2_async_notifier_cleanup(&rkisp1->notifier); + + rkisp1_params_unregister(&rkisp1->params); + rkisp1_stats_unregister(&rkisp1->stats); + rkisp1_capture_devs_unregister(rkisp1); + rkisp1_resizer_devs_unregister(rkisp1); + rkisp1_isp_unregister(rkisp1); + + media_device_unregister(&rkisp1->media_dev); + v4l2_device_unregister(&rkisp1->v4l2_dev); + + pm_runtime_disable(&pdev->dev); + + debugfs_remove_recursive(rkisp1->debug.debugfs_dir); + return 0; +} + +static struct platform_driver rkisp1_drv = { + .driver = { + .name = RKISP1_DRIVER_NAME, + .of_match_table = of_match_ptr(rkisp1_of_match), + .pm = &rkisp1_pm_ops, + }, + .probe = rkisp1_probe, + .remove = rkisp1_remove, +}; + +module_platform_driver(rkisp1_drv); +MODULE_DESCRIPTION("Rockchip ISP1 platform driver"); +MODULE_LICENSE("Dual MIT/GPL"); |