// SPDX-License-Identifier: GPL-2.0-only /* * s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver * * Copyright (C) 2012 Sylwester Nawrocki <[email protected]> * Copyright (C) 2012 Tomasz Figa <[email protected]> * * Based on drivers/media/platform/s5p-fimc, * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd. */ #define pr_fmt(fmt) … #include <linux/bug.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/ratelimit.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/videodev2.h> #include <media/media-device.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #include <media/v4l2-ioctl.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-contig.h> #include "camif-core.h" #include "camif-regs.h" static int debug; module_param(debug, int, 0644); /* Locking: called with vp->camif->slock spinlock held */ static void camif_cfg_video_path(struct camif_vp *vp) { … } static void camif_prepare_dma_offset(struct camif_vp *vp) { … } /* Locking: called with camif->slock spinlock held */ static int s3c_camif_hw_init(struct camif_dev *camif, struct camif_vp *vp) { … } /* * Initialize the video path, only up from the scaler stage. The camera * input interface set up is skipped. This is useful to enable one of the * video paths when the other is already running. * Locking: called with camif->slock spinlock held. */ static int s3c_camif_hw_vp_init(struct camif_dev *camif, struct camif_vp *vp) { … } static int sensor_set_power(struct camif_dev *camif, int on) { … } static int sensor_set_streaming(struct camif_dev *camif, int on) { … } /* * Reinitialize the driver so it is ready to start streaming again. * Return any buffers to vb2, perform CAMIF software reset and * turn off streaming at the data pipeline (sensor) if required. */ static int camif_reinitialize(struct camif_vp *vp) { … } static bool s3c_vp_active(struct camif_vp *vp) { … } static bool camif_is_streaming(struct camif_dev *camif) { … } static int camif_stop_capture(struct camif_vp *vp) { … } static int camif_prepare_addr(struct camif_vp *vp, struct vb2_buffer *vb, struct camif_addr *paddr) { … } irqreturn_t s3c_camif_irq_handler(int irq, void *priv) { … } static int start_streaming(struct vb2_queue *vq, unsigned int count) { … } static void stop_streaming(struct vb2_queue *vq) { … } 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 s3c_camif_qops = …; static int s3c_camif_open(struct file *file) { … } static int s3c_camif_close(struct file *file) { … } static __poll_t s3c_camif_poll(struct file *file, struct poll_table_struct *wait) { … } static int s3c_camif_mmap(struct file *file, struct vm_area_struct *vma) { … } static const struct v4l2_file_operations s3c_camif_fops = …; /* * Video node IOCTLs */ static int s3c_camif_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int s3c_camif_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *input) { … } static int s3c_camif_vidioc_s_input(struct file *file, void *priv, unsigned int i) { … } static int s3c_camif_vidioc_g_input(struct file *file, void *priv, unsigned int *i) { … } static int s3c_camif_vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static int s3c_camif_vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { … } static int __camif_video_try_format(struct camif_vp *vp, struct v4l2_pix_format *pix, const struct camif_fmt **ffmt) { … } static int s3c_camif_vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { … } static int s3c_camif_vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { … } /* Only check pixel formats at the sensor and the camif subdev pads */ static int camif_pipeline_validate(struct camif_dev *camif) { … } static int s3c_camif_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { … } static int s3c_camif_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { … } static int s3c_camif_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *rb) { … } static int s3c_camif_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { … } static int s3c_camif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { … } static int s3c_camif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { … } static int s3c_camif_create_bufs(struct file *file, void *priv, struct v4l2_create_buffers *create) { … } static int s3c_camif_prepare_buf(struct file *file, void *priv, struct v4l2_buffer *b) { … } static int s3c_camif_g_selection(struct file *file, void *priv, struct v4l2_selection *sel) { … } static void __camif_try_compose(struct camif_dev *camif, struct camif_vp *vp, struct v4l2_rect *r) { … } static int s3c_camif_s_selection(struct file *file, void *priv, struct v4l2_selection *sel) { … } static const struct v4l2_ioctl_ops s3c_camif_ioctl_ops = …; /* * Video node controls */ static int s3c_camif_video_s_ctrl(struct v4l2_ctrl *ctrl) { … } /* Codec and preview video node control ops */ static const struct v4l2_ctrl_ops s3c_camif_video_ctrl_ops = …; int s3c_camif_register_video_node(struct camif_dev *camif, int idx) { … } void s3c_camif_unregister_video_node(struct camif_dev *camif, int idx) { … } /* Media bus pixel formats supported at the camif input */ static const u32 camif_mbus_formats[] = …; /* * Camera input interface subdev operations */ static int s3c_camif_subdev_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static void __camif_subdev_try_format(struct camif_dev *camif, struct v4l2_mbus_framefmt *mf, int pad) { … } static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static int s3c_camif_subdev_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static void __camif_try_crop(struct camif_dev *camif, struct v4l2_rect *r) { … } static int s3c_camif_subdev_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static const struct v4l2_subdev_pad_ops s3c_camif_subdev_pad_ops = …; static const struct v4l2_subdev_ops s3c_camif_subdev_ops = …; static int s3c_camif_subdev_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops s3c_camif_subdev_ctrl_ops = …; static const char * const s3c_camif_test_pattern_menu[] = …; int s3c_camif_create_subdev(struct camif_dev *camif) { … } void s3c_camif_unregister_subdev(struct camif_dev *camif) { … } int s3c_camif_set_defaults(struct camif_dev *camif) { … }
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