// SPDX-License-Identifier: GPL-2.0-only /* * Samsung EXYNOS FIMC-LITE (camera host interface) driver * * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. * Author: Sylwester Nawrocki <[email protected]> */ #define pr_fmt(fmt) … #include <linux/bug.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/module.h> #include <linux/of.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-mem2mem.h> #include <media/v4l2-rect.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-contig.h> #include <media/drv-intf/exynos-fimc.h> #include "common.h" #include "fimc-core.h" #include "fimc-lite.h" #include "fimc-lite-reg.h" static int debug; module_param(debug, int, 0644); static const struct fimc_fmt fimc_lite_formats[] = …; /** * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code * @pixelformat: fourcc to match, ignored if null * @mbus_code: media bus code to match, ignored if null * @mask: the color format flags to match * @index: index to the fimc_lite_formats array, ignored if negative */ static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat, const u32 *mbus_code, unsigned int mask, int index) { … } static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output) { … } /* * Reinitialize the driver so it is ready to start the streaming again. * Set fimc->state to indicate stream off and the hardware shut down state. * If not suspending (@suspend is false), return any buffers to videobuf2. * Otherwise put any owned buffers onto the pending buffers queue, so they * can be re-spun when the device is being resumed. Also perform FIMC * software reset and disable streaming on the whole pipeline if required. */ static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend) { … } static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend) { … } /* Must be called with fimc.slock spinlock held. */ static void fimc_lite_config_update(struct fimc_lite *fimc) { … } static irqreturn_t flite_irq_handler(int irq, void *priv) { … } static int start_streaming(struct vb2_queue *q, unsigned int count) { … } static void stop_streaming(struct vb2_queue *q) { … } static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int buffer_prepare(struct vb2_buffer *vb) { … } static void buffer_queue(struct vb2_buffer *vb) { … } static const struct vb2_ops fimc_lite_qops = …; static void fimc_lite_clear_event_counters(struct fimc_lite *fimc) { … } static int fimc_lite_open(struct file *file) { … } static int fimc_lite_release(struct file *file) { … } static const struct v4l2_file_operations fimc_lite_fops = …; /* * Format and crop negotiation helpers */ static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { … } static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r) { … } static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r) { … } /* * Video node ioctl operations */ static int fimc_lite_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int fimc_lite_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static int fimc_lite_g_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { … } static int fimc_lite_try_fmt(struct fimc_lite *fimc, struct v4l2_pix_format_mplane *pixm, const struct fimc_fmt **ffmt) { … } static int fimc_lite_try_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { … } static int fimc_lite_s_fmt_mplane(struct file *file, void *priv, struct v4l2_format *f) { … } static int fimc_pipeline_validate(struct fimc_lite *fimc) { … } static int fimc_lite_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { … } static int fimc_lite_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { … } static int fimc_lite_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { … } static int fimc_lite_g_selection(struct file *file, void *fh, struct v4l2_selection *sel) { … } static int fimc_lite_s_selection(struct file *file, void *fh, struct v4l2_selection *sel) { … } static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = …; /* Capture subdev media entity operations */ static int fimc_lite_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { … } static const struct media_entity_operations fimc_lite_subdev_media_ops = …; static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt( struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, unsigned int pad) { … } static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on) { … } static int fimc_lite_log_status(struct v4l2_subdev *sd) { … } static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) { … } static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd) { … } static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = …; static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = …; static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = …; static const struct v4l2_subdev_core_ops fimc_lite_core_ops = …; static const struct v4l2_subdev_ops fimc_lite_subdev_ops = …; static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = …; static const struct v4l2_ctrl_config fimc_lite_ctrl = …; static void fimc_lite_set_default_config(struct fimc_lite *fimc) { … } static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) { … } static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc) { … } static void fimc_lite_clk_put(struct fimc_lite *fimc) { … } static int fimc_lite_clk_get(struct fimc_lite *fimc) { … } static const struct of_device_id flite_of_match[]; static int fimc_lite_probe(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int fimc_lite_runtime_resume(struct device *dev) { … } static int fimc_lite_runtime_suspend(struct device *dev) { … } #endif #ifdef CONFIG_PM_SLEEP static int fimc_lite_resume(struct device *dev) { … } static int fimc_lite_suspend(struct device *dev) { … } #endif /* CONFIG_PM_SLEEP */ static void fimc_lite_remove(struct platform_device *pdev) { … } static const struct dev_pm_ops fimc_lite_pm_ops = …; /* EXYNOS4212, EXYNOS4412 */ static struct flite_drvdata fimc_lite_drvdata_exynos4 = …; /* EXYNOS5250 */ static struct flite_drvdata fimc_lite_drvdata_exynos5 = …; static const struct of_device_id flite_of_match[] = …; MODULE_DEVICE_TABLE(of, flite_of_match); static struct platform_driver fimc_lite_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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