// SPDX-License-Identifier: GPL-2.0-or-later /* cx231xx-video.c - driver for Conexant Cx23100/101/102 USB video capture devices Copyright (C) 2008 <srinivasa.deevi at conexant dot com> Based on em28xx driver Based on cx23885 driver Based on cx88 driver */ #include "cx231xx.h" #include <linux/init.h> #include <linux/list.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/bitmap.h> #include <linux/i2c.h> #include <linux/mm.h> #include <linux/mutex.h> #include <linux/slab.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-event.h> #include <media/drv-intf/msp3400.h> #include <media/tuner.h> #include <media/dvb_frontend.h> #include "cx231xx-vbi.h" #define CX231XX_VERSION … #define DRIVER_AUTHOR … #define DRIVER_DESC … #define cx231xx_videodbg(fmt, arg...) … static unsigned int isoc_debug; module_param(isoc_debug, int, 0644); MODULE_PARM_DESC(…) …; #define cx231xx_isocdbg(fmt, arg...) … MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …; MODULE_VERSION(…); static unsigned int card[] = …; static unsigned int video_nr[] = …; static unsigned int vbi_nr[] = …; static unsigned int radio_nr[] = …; module_param_array(…); module_param_array(…); module_param_array(…); module_param_array(…); MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; static unsigned int video_debug; module_param(video_debug, int, 0644); MODULE_PARM_DESC(…) …; /* supported video standards */ static struct cx231xx_fmt format[] = …; static int cx231xx_enable_analog_tuner(struct cx231xx *dev) { … } /* ------------------------------------------------------------------ Video buffer and parser functions ------------------------------------------------------------------*/ /* * Announces that a buffer were filled and request the next */ static inline void buffer_filled(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, struct cx231xx_buffer *buf) { … } static inline void print_err_status(struct cx231xx *dev, int packet, int status) { … } /* * generic routine to get the next available buffer */ static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q, struct cx231xx_buffer **buf) { … } /* * Controls the isoc copy of each urb packet */ static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb) { … } static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb) { … } u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, u32 *p_bytes_used) { … } u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used) { … } u32 cx231xx_get_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 sav_eav, u8 *p_buffer, u32 buffer_size) { … } u32 cx231xx_copy_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 *p_line, u32 length, int field_number) { … } void cx231xx_reset_video_buffer(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) { … } int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, u8 *p_buffer, u32 bytes_to_copy) { … } void cx231xx_swab(u16 *from, u16 *to, u16 len) { … } u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) { … } /* ------------------------------------------------------------------ Videobuf operations ------------------------------------------------------------------*/ static int queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { … } static void buffer_queue(struct vb2_buffer *vb) { … } static void return_all_buffers(struct cx231xx *dev, enum vb2_buffer_state state) { … } static int start_streaming(struct vb2_queue *vq, unsigned int count) { … } static void stop_streaming(struct vb2_queue *vq) { … } static const struct vb2_ops cx231xx_video_qops = …; /********************* v4l2 interface **************************************/ void video_mux(struct cx231xx *dev, int index) { … } /* ------------------------------------------------------------------ IOCTL vidioc handling ------------------------------------------------------------------*/ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) { … } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) { … } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) { … } static const char *iname[] = …; void cx231xx_v4l2_create_entities(struct cx231xx *dev) { … } int cx231xx_enum_input(struct file *file, void *priv, struct v4l2_input *i) { … } int cx231xx_g_input(struct file *file, void *priv, unsigned int *i) { … } int cx231xx_s_input(struct file *file, void *priv, unsigned int i) { … } int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { … } int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) { … } int cx231xx_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { … } int cx231xx_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { … } #ifdef CONFIG_VIDEO_ADV_DEBUG int cx231xx_g_chip_info(struct file *file, void *fh, struct v4l2_dbg_chip_info *chip) { … } int cx231xx_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { … } int cx231xx_s_register(struct file *file, void *priv, const struct v4l2_dbg_register *reg) { … } #endif static int vidioc_g_pixelaspect(struct file *file, void *priv, int type, struct v4l2_fract *f) { … } static int vidioc_g_selection(struct file *file, void *priv, struct v4l2_selection *s) { … } int cx231xx_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } /* RAW VBI ioctls */ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *f) { … } /* ----------------------------------------------------------- */ /* RADIO ESPECIFIC IOCTLS */ /* ----------------------------------------------------------- */ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { … } static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) { … } /* * cx231xx_v4l2_open() * inits the device and starts isoc transfer */ static int cx231xx_v4l2_open(struct file *filp) { … } /* * cx231xx_realease_resources() * unregisters the v4l2,i2c and usb devices * called when the device gets disconnected or at module unload */ void cx231xx_release_analog_resources(struct cx231xx *dev) { … } /* * cx231xx_close() * stops streaming and deallocates all resources allocated by the v4l2 * calls and ioctls */ static int cx231xx_close(struct file *filp) { … } static int cx231xx_v4l2_close(struct file *filp) { … } static const struct v4l2_file_operations cx231xx_v4l_fops = …; static const struct v4l2_ioctl_ops video_ioctl_ops = …; static struct video_device cx231xx_vbi_template; static const struct video_device cx231xx_video_template = …; static const struct v4l2_file_operations radio_fops = …; static const struct v4l2_ioctl_ops radio_ioctl_ops = …; static struct video_device cx231xx_radio_template = …; /******************************** usb interface ******************************/ static void cx231xx_vdev_init(struct cx231xx *dev, struct video_device *vfd, const struct video_device *template, const char *type_name) { … } int cx231xx_register_analog_devices(struct cx231xx *dev) { … }
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