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linux/drivers/media/usb/dvb-usb-v2/dvb_usb.h
Antti Palosaari 19324414c9 media: dvb-usb-v2: add probe/disconnect callbacks 
Add probe and disconnect callbacks that behaves similarly than ones
used commonly on Linux driver model. We need those to get early / late
access to driver in order to use normal probe time stuff, like regmap,
extra bus adapters and so.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-21 14:15:09 -04:00

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/*
* DVB USB framework
*
* Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@posteo.de>
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef DVB_USB_H
#define DVB_USB_H
#include <linux/usb/input.h>
#include <linux/firmware.h>
#include <media/rc-core.h>
#include <media/media-device.h>
#include <media/dvb_frontend.h>
#include <media/dvb_demux.h>
#include <media/dvb_net.h>
#include <media/dmxdev.h>
#include <media/dvb-usb-ids.h>
/*
* device file: /dev/dvb/adapter[0-1]/frontend[0-2]
*
* |-- device
* | |-- adapter0
* | | |-- frontend0
* | | |-- frontend1
* | | `-- frontend2
* | `-- adapter1
* | |-- frontend0
* | |-- frontend1
* | `-- frontend2
*
*
* Commonly used variable names:
* d = pointer to device (struct dvb_usb_device *)
* adap = pointer to adapter (struct dvb_usb_adapter *)
* fe = pointer to frontend (struct dvb_frontend *)
*
* Use macros defined in that file to resolve needed pointers.
*/
/* helper macros for every DVB USB driver use */
#define adap_to_d(adap) (container_of(adap, struct dvb_usb_device, \
adapter[adap->id]))
#define adap_to_priv(adap) (adap_to_d(adap)->priv)
#define fe_to_adap(fe) ((struct dvb_usb_adapter *) ((fe)->dvb->priv))
#define fe_to_d(fe) (adap_to_d(fe_to_adap(fe)))
#define fe_to_priv(fe) (fe_to_d(fe)->priv)
#define d_to_priv(d) (d->priv)
#define dvb_usb_dbg_usb_control_msg(udev, r, t, v, i, b, l) { \
char *direction; \
if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \
direction = ">>>"; \
else \
direction = "<<<"; \
dev_dbg(&udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \
"%s %*ph\n", __func__, t, r, v & 0xff, v >> 8, \
i & 0xff, i >> 8, l & 0xff, l >> 8, direction, l, b); \
}
#define DVB_USB_STREAM_BULK(endpoint_, count_, size_) { \
.type = USB_BULK, \
.count = count_, \
.endpoint = endpoint_, \
.u = { \
.bulk = { \
.buffersize = size_, \
} \
} \
}
#define DVB_USB_STREAM_ISOC(endpoint_, count_, frames_, size_, interval_) { \
.type = USB_ISOC, \
.count = count_, \
.endpoint = endpoint_, \
.u = { \
.isoc = { \
.framesperurb = frames_, \
.framesize = size_,\
.interval = interval_, \
} \
} \
}
#define DVB_USB_DEVICE(vend, prod, props_, name_, rc) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
.idVendor = (vend), \
.idProduct = (prod), \
.driver_info = (kernel_ulong_t) &((const struct dvb_usb_driver_info) { \
.props = (props_), \
.name = (name_), \
.rc_map = (rc), \
})
struct dvb_usb_device;
struct dvb_usb_adapter;
/**
* structure for carrying all needed data from the device driver to the general
* dvb usb routines
* @name: device name
* @rc_map: name of rc codes table
* @props: structure containing all device properties
*/
struct dvb_usb_driver_info {
const char *name;
const char *rc_map;
const struct dvb_usb_device_properties *props;
};
/**
* structure for remote controller configuration
* @map_name: name of rc codes table
* @allowed_protos: protocol(s) supported by the driver
* @change_protocol: callback to change protocol
* @query: called to query an event from the device
* @interval: time in ms between two queries
* @driver_type: used to point if a device supports raw mode
* @bulk_mode: device supports bulk mode for rc (disable polling mode)
*/
struct dvb_usb_rc {
const char *map_name;
u64 allowed_protos;
int (*change_protocol)(struct rc_dev *dev, u64 *rc_proto);
int (*query) (struct dvb_usb_device *d);
unsigned int interval;
enum rc_driver_type driver_type;
bool bulk_mode;
};
/**
* usb streaming configration for adapter
* @type: urb type
* @count: count of used urbs
* @endpoint: stream usb endpoint number
*/
struct usb_data_stream_properties {
#define USB_BULK 1
#define USB_ISOC 2
u8 type;
u8 count;
u8 endpoint;
union {
struct {
unsigned int buffersize; /* per URB */
} bulk;
struct {
int framesperurb;
int framesize;
int interval;
} isoc;
} u;
};
/**
* properties of dvb usb device adapter
* @caps: adapter capabilities
* @pid_filter_count: pid count of adapter pid-filter
* @pid_filter_ctrl: called to enable/disable pid-filter
* @pid_filter: called to set/unset pid for filtering
* @stream: adapter usb stream configuration
*/
#define MAX_NO_OF_FE_PER_ADAP 3
struct dvb_usb_adapter_properties {
#define DVB_USB_ADAP_HAS_PID_FILTER 0x01
#define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
#define DVB_USB_ADAP_NEED_PID_FILTERING 0x04
u8 caps;
u8 pid_filter_count;
int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
int (*pid_filter) (struct dvb_usb_adapter *, int, u16, int);
struct usb_data_stream_properties stream;
};
/**
* struct dvb_usb_device_properties - properties of a dvb-usb-device
* @driver_name: name of the owning driver module
* @owner: owner of the dvb_adapter
* @adapter_nr: values from the DVB_DEFINE_MOD_OPT_ADAPTER_NR() macro
* @bInterfaceNumber: usb interface number driver binds
* @size_of_priv: bytes allocated for the driver private data
* @generic_bulk_ctrl_endpoint: bulk control endpoint number for sent
* @generic_bulk_ctrl_endpoint_response: bulk control endpoint number for
* receive
* @generic_bulk_ctrl_delay: delay between bulk control sent and receive message
* @probe: like probe on driver model
* @disconnect: like disconnect on driver model
* @identify_state: called to determine the firmware state (cold or warm) and
* return possible firmware file name to be loaded
* @firmware: name of the firmware file to be loaded
* @download_firmware: called to download the firmware
* @i2c_algo: i2c_algorithm if the device has i2c-adapter
* @num_adapters: dvb usb device adapter count
* @get_adapter_count: called to resolve adapter count
* @adapter: array of all adapter properties of device
* @power_ctrl: called to enable/disable power of the device
* @read_config: called to resolve device configuration
* @read_mac_address: called to resolve adapter mac-address
* @frontend_attach: called to attach the possible frontends
* @frontend_detach: called to detach the possible frontends
* @tuner_attach: called to attach the possible tuners
* @frontend_ctrl: called to power on/off active frontend
* @streaming_ctrl: called to start/stop the usb streaming of adapter
* @init: called after adapters are created in order to finalize device
* configuration
* @exit: called when driver is unloaded
* @get_rc_config: called to resolve used remote controller configuration
* @get_stream_config: called to resolve input and output stream configuration
* of the adapter just before streaming is started. input stream is transport
* stream from the demodulator and output stream is usb stream to host.
*/
#define MAX_NO_OF_ADAPTER_PER_DEVICE 2
struct dvb_usb_device_properties {
const char *driver_name;
struct module *owner;
short *adapter_nr;
u8 bInterfaceNumber;
unsigned int size_of_priv;
u8 generic_bulk_ctrl_endpoint;
u8 generic_bulk_ctrl_endpoint_response;
unsigned int generic_bulk_ctrl_delay;
int (*probe)(struct dvb_usb_device *);
void (*disconnect)(struct dvb_usb_device *);
#define WARM 0
#define COLD 1
int (*identify_state) (struct dvb_usb_device *, const char **);
const char *firmware;
#define RECONNECTS_USB 1
int (*download_firmware) (struct dvb_usb_device *,
const struct firmware *);
struct i2c_algorithm *i2c_algo;
unsigned int num_adapters;
int (*get_adapter_count) (struct dvb_usb_device *);
struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
int (*power_ctrl) (struct dvb_usb_device *, int);
int (*read_config) (struct dvb_usb_device *d);
int (*read_mac_address) (struct dvb_usb_adapter *, u8 []);
int (*frontend_attach) (struct dvb_usb_adapter *);
int (*frontend_detach)(struct dvb_usb_adapter *);
int (*tuner_attach) (struct dvb_usb_adapter *);
int (*tuner_detach)(struct dvb_usb_adapter *);
int (*frontend_ctrl) (struct dvb_frontend *, int);
int (*streaming_ctrl) (struct dvb_frontend *, int);
int (*init) (struct dvb_usb_device *);
void (*exit) (struct dvb_usb_device *);
int (*get_rc_config) (struct dvb_usb_device *, struct dvb_usb_rc *);
#define DVB_USB_FE_TS_TYPE_188 0
#define DVB_USB_FE_TS_TYPE_204 1
#define DVB_USB_FE_TS_TYPE_RAW 2
int (*get_stream_config) (struct dvb_frontend *, u8 *,
struct usb_data_stream_properties *);
};
/**
* generic object of an usb stream
* @buf_num: number of buffer allocated
* @buf_size: size of each buffer in buf_list
* @buf_list: array containing all allocate buffers for streaming
* @dma_addr: list of dma_addr_t for each buffer in buf_list
*
* @urbs_initialized: number of URBs initialized
* @urbs_submitted: number of URBs submitted
*/
#define MAX_NO_URBS_FOR_DATA_STREAM 10
struct usb_data_stream {
struct usb_device *udev;
struct usb_data_stream_properties props;
#define USB_STATE_INIT 0x00
#define USB_STATE_URB_BUF 0x01
u8 state;
void (*complete) (struct usb_data_stream *, u8 *, size_t);
struct urb *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
int buf_num;
unsigned long buf_size;
u8 *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
dma_addr_t dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];
int urbs_initialized;
int urbs_submitted;
void *user_priv;
};
/**
* dvb adapter object on dvb usb device
* @props: pointer to adapter properties
* @stream: adapter the usb data stream
* @id: index of this adapter (starting with 0)
* @ts_type: transport stream, input stream, type
* @suspend_resume_active: set when there is ongoing suspend / resume
* @pid_filtering: is hardware pid_filtering used or not
* @feed_count: current feed count
* @max_feed_count: maimum feed count device can handle
* @dvb_adap: adapter dvb_adapter
* @dmxdev: adapter dmxdev
* @demux: adapter software demuxer
* @dvb_net: adapter dvb_net interfaces
* @sync_mutex: mutex used to sync control and streaming of the adapter
* @fe: adapter frontends
* @fe_init: rerouted frontend-init function
* @fe_sleep: rerouted frontend-sleep function
*/
struct dvb_usb_adapter {
const struct dvb_usb_adapter_properties *props;
struct usb_data_stream stream;
u8 id;
u8 ts_type;
bool suspend_resume_active;
bool pid_filtering;
u8 feed_count;
u8 max_feed_count;
s8 active_fe;
#define ADAP_INIT 0
#define ADAP_SLEEP 1
#define ADAP_STREAMING 2
unsigned long state_bits;
/* dvb */
struct dvb_adapter dvb_adap;
struct dmxdev dmxdev;
struct dvb_demux demux;
struct dvb_net dvb_net;
struct dvb_frontend *fe[MAX_NO_OF_FE_PER_ADAP];
int (*fe_init[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *);
int (*fe_sleep[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *);
};
/**
* dvb usb device object
* @props: device properties
* @name: device name
* @rc_map: name of rc codes table
* @rc_polling_active: set when RC polling is active
* @intf: pointer to the device's struct usb_interface
* @udev: pointer to the device's struct usb_device
* @rc: remote controller configuration
* @powered: indicated whether the device is power or not
* @usb_mutex: mutex for usb control messages
* @i2c_mutex: mutex for i2c-transfers
* @i2c_adap: device's i2c-adapter
* @rc_dev: rc device for the remote control
* @rc_query_work: work for polling remote
* @priv: private data of the actual driver (allocate by dvb usb, size defined
* in size_of_priv of dvb_usb_properties).
*/
struct dvb_usb_device {
const struct dvb_usb_device_properties *props;
const char *name;
const char *rc_map;
bool rc_polling_active;
struct usb_interface *intf;
struct usb_device *udev;
struct dvb_usb_rc rc;
int powered;
/* locking */
struct mutex usb_mutex;
/* i2c */
struct mutex i2c_mutex;
struct i2c_adapter i2c_adap;
struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
/* remote control */
struct rc_dev *rc_dev;
char rc_phys[64];
struct delayed_work rc_query_work;
void *priv;
};
extern int dvb_usbv2_probe(struct usb_interface *,
const struct usb_device_id *);
extern void dvb_usbv2_disconnect(struct usb_interface *);
extern int dvb_usbv2_suspend(struct usb_interface *, pm_message_t);
extern int dvb_usbv2_resume(struct usb_interface *);
extern int dvb_usbv2_reset_resume(struct usb_interface *);
/* the generic read/write method for device control */
extern int dvb_usbv2_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16);
extern int dvb_usbv2_generic_write(struct dvb_usb_device *, u8 *, u16);
/* caller must hold lock when locked versions are called */
extern int dvb_usbv2_generic_rw_locked(struct dvb_usb_device *,
u8 *, u16, u8 *, u16);
extern int dvb_usbv2_generic_write_locked(struct dvb_usb_device *, u8 *, u16);
#endif
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