// SPDX-License-Identifier: GPL-2.0+ // // DVB USB compliant linux driver for Conexant USB reference design - // (analog part). // // Copyright (C) 2011, 2017, 2018 // Maciej S. Szmigiero ([email protected]) // // In case there are new analog / DVB-T hybrid devices released in the market // using the same general design as Medion MD95700: a CX25840 video decoder // outputting a BT.656 stream to a USB bridge chip which then forwards it to // the host in isochronous USB packets this code should be made generic, with // board specific bits implemented via separate card structures. // // This is, however, unlikely as the Medion model was released // years ago (in 2005). // // TODO: // * audio support, // * finish radio support (requires audio of course), // * VBI support, // * controls support #include <linux/bitops.h> #include <linux/device.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/ktime.h> #include <linux/vmalloc.h> #include <media/drv-intf/cx25840.h> #include <media/tuner.h> #include <media/v4l2-fh.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-subdev.h> #include <media/videobuf2-vmalloc.h> #include "cxusb.h" static int cxusb_medion_v_queue_setup(struct vb2_queue *q, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int cxusb_medion_v_buf_init(struct vb2_buffer *vb) { … } static void cxusb_auxbuf_init(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, u8 *buf, unsigned int len) { … } static void cxusb_auxbuf_head_trim(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, unsigned int pos) { … } static unsigned int cxusb_auxbuf_paylen(struct cxusb_medion_auxbuf *auxbuf) { … } static bool cxusb_auxbuf_make_space(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, unsigned int howmuch) { … } /* returns false if some data was overwritten */ static bool cxusb_auxbuf_append_urb(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, struct urb *urb) { … } static bool cxusb_auxbuf_copy(struct cxusb_medion_auxbuf *auxbuf, unsigned int pos, unsigned char *dest, unsigned int len) { … } static bool cxusb_medion_cf_refc_fld_chg(struct dvb_usb_device *dvbdev, struct cxusb_bt656_params *bt656, bool firstfield, unsigned int maxlines, unsigned int maxlinesamples, unsigned char buf[4]) { … } static void cxusb_medion_cf_refc_start_sch(struct dvb_usb_device *dvbdev, struct cxusb_bt656_params *bt656, bool firstfield, unsigned char buf[4]) { … } static void cxusb_medion_cf_refc_line_smpl(struct dvb_usb_device *dvbdev, struct cxusb_bt656_params *bt656, bool firstfield, unsigned int maxlinesamples, unsigned char buf[4]) { … } static void cxusb_medion_cf_refc_vbi_smpl(struct dvb_usb_device *dvbdev, struct cxusb_bt656_params *bt656, unsigned char buf[4]) { … } /* returns whether the whole 4-byte code should be skipped in the buffer */ static bool cxusb_medion_cf_ref_code(struct dvb_usb_device *dvbdev, struct cxusb_bt656_params *bt656, bool firstfield, unsigned int maxlines, unsigned int maxlinesamples, unsigned char buf[4]) { … } static bool cxusb_medion_cs_start_sch(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, struct cxusb_bt656_params *bt656, unsigned int maxlinesamples) { … } static void cxusb_medion_cs_line_smpl(struct cxusb_bt656_params *bt656, unsigned int maxlinesamples, unsigned char val) { … } static bool cxusb_medion_copy_samples(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, struct cxusb_bt656_params *bt656, unsigned int maxlinesamples, unsigned char val) { … } static bool cxusb_medion_copy_field(struct dvb_usb_device *dvbdev, struct cxusb_medion_auxbuf *auxbuf, struct cxusb_bt656_params *bt656, bool firstfield, unsigned int maxlines, unsigned int maxlinesmpls) { … } static bool cxusb_medion_v_process_auxbuf(struct cxusb_medion_dev *cxdev, bool reset) { … } static bool cxusb_medion_v_complete_handle_urb(struct cxusb_medion_dev *cxdev, bool *auxbuf_reset) { … } static void cxusb_medion_v_complete_work(struct work_struct *work) { … } static void cxusb_medion_v_complete(struct urb *u) { … } static void cxusb_medion_urbs_free(struct cxusb_medion_dev *cxdev) { … } static void cxusb_medion_return_buffers(struct cxusb_medion_dev *cxdev, bool requeue) { … } static int cxusb_medion_v_ss_auxbuf_alloc(struct cxusb_medion_dev *cxdev, int *npackets) { … } static u32 cxusb_medion_norm2field_order(v4l2_std_id norm) { … } static u32 cxusb_medion_field_order(struct cxusb_medion_dev *cxdev) { … } static int cxusb_medion_v_start_streaming(struct vb2_queue *q, unsigned int count) { … } static void cxusb_medion_v_stop_streaming(struct vb2_queue *q) { … } static void cxusub_medion_v_buf_queue(struct vb2_buffer *vb) { … } static const struct vb2_ops cxdev_video_qops = …; static const __u32 videocaps = …; static const __u32 radiocaps = …; static int cxusb_medion_v_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { … } static int cxusb_medion_v_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) { … } static int cxusb_medion_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { … } static int cxusb_medion_try_s_fmt_vid_cap(struct file *file, struct v4l2_format *f, bool isset) { … } static int cxusb_medion_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { … } static int cxusb_medion_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { … } static const struct { … } cxusb_medion_inputs[] = …; #define CXUSB_INPUT_CNT … static int cxusb_medion_enum_input(struct file *file, void *fh, struct v4l2_input *inp) { … } static int cxusb_medion_g_input(struct file *file, void *fh, unsigned int *i) { … } static int cxusb_medion_set_norm(struct cxusb_medion_dev *cxdev, v4l2_std_id norm) { … } static int cxusb_medion_s_input(struct file *file, void *fh, unsigned int i) { … } static int cxusb_medion_g_tuner(struct file *file, void *fh, struct v4l2_tuner *tuner) { … } static int cxusb_medion_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *tuner) { … } static int cxusb_medion_g_frequency(struct file *file, void *fh, struct v4l2_frequency *freq) { … } static int cxusb_medion_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *freq) { … } static int cxusb_medion_g_std(struct file *file, void *fh, v4l2_std_id *norm) { … } static int cxusb_medion_s_std(struct file *file, void *fh, v4l2_std_id norm) { … } static int cxusb_medion_querystd(struct file *file, void *fh, v4l2_std_id *norm) { … } static int cxusb_medion_log_status(struct file *file, void *fh) { … } static const struct v4l2_ioctl_ops cxusb_video_ioctl = …; static const struct v4l2_ioctl_ops cxusb_radio_ioctl = …; /* * in principle, this should be const, but s_io_pin_config is declared * to take non-const, and gcc complains */ static struct v4l2_subdev_io_pin_config cxusub_medion_pin_config[] = …; int cxusb_medion_analog_init(struct dvb_usb_device *dvbdev) { … } static int cxusb_videoradio_open(struct file *f) { … } static int cxusb_videoradio_release(struct file *f) { … } static const struct v4l2_file_operations cxusb_video_fops = …; static const struct v4l2_file_operations cxusb_radio_fops = …; static void cxusb_medion_v4l2_release(struct v4l2_device *v4l2_dev) { … } static void cxusb_medion_videodev_release(struct video_device *vdev) { … } static int cxusb_medion_register_analog_video(struct dvb_usb_device *dvbdev) { … } static int cxusb_medion_register_analog_radio(struct dvb_usb_device *dvbdev) { … } static int cxusb_medion_register_analog_subdevs(struct dvb_usb_device *dvbdev) { … } int cxusb_medion_register_analog(struct dvb_usb_device *dvbdev) { … } void cxusb_medion_unregister_analog(struct dvb_usb_device *dvbdev) { … }
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