linux/drivers/media/usb/pvrusb2/pvrusb2-encoder.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *
 *  Copyright (C) 2005 Mike Isely <[email protected]>
 *  Copyright (C) 2004 Aurelien Alleaume <[email protected]>
 */

#include <linux/device.h>   // for linux/firmware.h
#include <linux/firmware.h>
#include "pvrusb2-util.h"
#include "pvrusb2-encoder.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include "pvrusb2-fx2-cmd.h"



/* Firmware mailbox flags - definitions found from ivtv */
#define IVTV_MBOX_FIRMWARE_DONE …
#define IVTV_MBOX_DRIVER_DONE …
#define IVTV_MBOX_DRIVER_BUSY …

#define MBOX_BASE …


static int pvr2_encoder_write_words(struct pvr2_hdw *hdw,
				    unsigned int offs,
				    const u32 *data, unsigned int dlen)
{ … }


static int pvr2_encoder_read_words(struct pvr2_hdw *hdw,
				   unsigned int offs,
				   u32 *data, unsigned int dlen)
{ … }


/* This prototype is set up to be compatible with the
   cx2341x_mbox_func prototype in cx2341x.h, which should be in
   kernels 2.6.18 or later.  We do this so that we can enable
   cx2341x.ko to write to our encoder (by handing it a pointer to this
   function).  For earlier kernels this doesn't really matter. */
static int pvr2_encoder_cmd(void *ctxt,
			    u32 cmd,
			    int arg_cnt_send,
			    int arg_cnt_recv,
			    u32 *argp)
{ … }


static int pvr2_encoder_vcmd(struct pvr2_hdw *hdw, int cmd,
			     int args, ...)
{ … }


/* This implements some extra setup for the encoder that seems to be
   specific to the PVR USB2 hardware. */
static int pvr2_encoder_prep_config(struct pvr2_hdw *hdw)
{ … }

int pvr2_encoder_adjust(struct pvr2_hdw *hdw)
{ … }


int pvr2_encoder_configure(struct pvr2_hdw *hdw)
{ … }


int pvr2_encoder_start(struct pvr2_hdw *hdw)
{ … }

int pvr2_encoder_stop(struct pvr2_hdw *hdw)
{ … }