From c79b339f92921fe73ac32ac2ae49a5b549dfc1f2 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Wed, 23 May 2012 10:06:09 -0300 Subject: [PATCH] [media] dvb_usb_v2: copy current dvb_usb as a starting point Use current implementation as a starting point for the new one. [mchehab@redhat.com: remove the new files from the build system, as the symbols there conflict with the existing ones] Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dvb_usb.h | 485 +++++++++++++++++++ drivers/media/dvb/dvb-usb/dvb_usb_common.h | 52 ++ drivers/media/dvb/dvb-usb/dvb_usb_dvb.c | 289 +++++++++++ drivers/media/dvb/dvb-usb/dvb_usb_firmware.c | 146 ++++++ drivers/media/dvb/dvb-usb/dvb_usb_i2c.c | 43 ++ drivers/media/dvb/dvb-usb/dvb_usb_init.c | 304 ++++++++++++ drivers/media/dvb/dvb-usb/dvb_usb_remote.c | 391 +++++++++++++++ drivers/media/dvb/dvb-usb/dvb_usb_urb.c | 121 +++++ drivers/media/dvb/dvb-usb/usb_urb.c | 254 ++++++++++ 9 files changed, 2085 insertions(+) create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb.h create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_common.h create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_dvb.c create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_firmware.c create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_i2c.c create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_init.c create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_remote.c create mode 100644 drivers/media/dvb/dvb-usb/dvb_usb_urb.c create mode 100644 drivers/media/dvb/dvb-usb/usb_urb.c diff --git a/drivers/media/dvb/dvb-usb/dvb_usb.h b/drivers/media/dvb/dvb-usb/dvb_usb.h new file mode 100644 index 000000000000..95caac116e8e --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb.h @@ -0,0 +1,485 @@ +/* dvb-usb.h is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * the headerfile, all dvb-usb-drivers have to include. + * + * TODO: clean-up the structures for unused fields and update the comments + */ +#ifndef DVB_USB_H +#define DVB_USB_H + +#include +#include +#include +#include +#include + +#include "dvb_frontend.h" +#include "dvb_demux.h" +#include "dvb_net.h" +#include "dmxdev.h" + +#include "dvb-pll.h" + +#include "dvb-usb-ids.h" + +/* debug */ +#ifdef CONFIG_DVB_USB_DEBUG +#define dprintk(var,level,args...) \ + do { if ((var & level)) { printk(args); } } while (0) + +#define debug_dump(b,l,func) {\ + int loop_; \ + for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \ + func("\n");\ +} +#define DVB_USB_DEBUG_STATUS +#else +#define dprintk(args...) +#define debug_dump(b,l,func) + +#define DVB_USB_DEBUG_STATUS " (debugging is not enabled)" + +#endif + +/* generic log methods - taken from usb.h */ +#ifndef DVB_USB_LOG_PREFIX + #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)" +#endif + +#undef err +#define err(format, arg...) printk(KERN_ERR DVB_USB_LOG_PREFIX ": " format "\n" , ## arg) +#undef info +#define info(format, arg...) printk(KERN_INFO DVB_USB_LOG_PREFIX ": " format "\n" , ## arg) +#undef warn +#define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg) + +/** + * struct dvb_usb_device_description - name and its according USB IDs + * @name: real name of the box, regardless which DVB USB device class is in use + * @cold_ids: array of struct usb_device_id which describe the device in + * pre-firmware state + * @warm_ids: array of struct usb_device_id which describe the device in + * post-firmware state + * + * Each DVB USB device class can have one or more actual devices, this struct + * assigns a name to it. + */ +struct dvb_usb_device_description { + const char *name; + +#define DVB_USB_ID_MAX_NUM 15 + struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM]; + struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM]; +}; + +static inline u8 rc5_custom(struct rc_map_table *key) +{ + return (key->scancode >> 8) & 0xff; +} + +static inline u8 rc5_data(struct rc_map_table *key) +{ + return key->scancode & 0xff; +} + +static inline u16 rc5_scan(struct rc_map_table *key) +{ + return key->scancode & 0xffff; +} + +struct dvb_usb_device; +struct dvb_usb_adapter; +struct usb_data_stream; + +/** + * Properties of USB streaming - TODO this structure should be somewhere else + * describes the kind of USB transfer used for data-streaming. + * (BULK or ISOC) + */ +struct usb_data_stream_properties { +#define USB_BULK 1 +#define USB_ISOC 2 + int type; + int count; + int endpoint; + + union { + struct { + int buffersize; /* per URB */ + } bulk; + struct { + int framesperurb; + int framesize; + int interval; + } isoc; + } u; +}; + +/** + * struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter. + * A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device. + * @caps: capabilities of the DVB USB device. + * @pid_filter_count: number of PID filter position in the optional hardware + * PID-filter. + * @num_frontends: number of frontends of the DVB USB adapter. + * @frontend_ctrl: called to power on/off active frontend. + * @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the + * device (not URB submitting/killing). + * @pid_filter_ctrl: called to en/disable the PID filter, if any. + * @pid_filter: called to set/unset a PID for filtering. + * @frontend_attach: called to attach the possible frontends (fill fe-field + * of struct dvb_usb_device). + * @tuner_attach: called to attach the correct tuner and to fill pll_addr, + * pll_desc and pll_init_buf of struct dvb_usb_device). + * @stream: configuration of the USB streaming + */ +struct dvb_usb_adapter_fe_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 +#define DVB_USB_ADAP_RECEIVES_204_BYTE_TS 0x08 +#define DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD 0x10 + int caps; + int pid_filter_count; + + int (*streaming_ctrl) (struct dvb_usb_adapter *, int); + int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int); + int (*pid_filter) (struct dvb_usb_adapter *, int, u16, int); + + int (*frontend_attach) (struct dvb_usb_adapter *); + int (*tuner_attach) (struct dvb_usb_adapter *); + + struct usb_data_stream_properties stream; + + int size_of_priv; +}; + +#define MAX_NO_OF_FE_PER_ADAP 3 +struct dvb_usb_adapter_properties { + int size_of_priv; + + int (*frontend_ctrl) (struct dvb_frontend *, int); + int (*fe_ioctl_override) (struct dvb_frontend *, + unsigned int, void *, unsigned int); + + int num_frontends; + struct dvb_usb_adapter_fe_properties fe[MAX_NO_OF_FE_PER_ADAP]; +}; + +/** + * struct dvb_rc_legacy - old properties of remote controller + * @rc_map_table: a hard-wired array of struct rc_map_table (NULL to disable + * remote control handling). + * @rc_map_size: number of items in @rc_map_table. + * @rc_query: called to query an event event. + * @rc_interval: time in ms between two queries. + */ +struct dvb_rc_legacy { +/* remote control properties */ +#define REMOTE_NO_KEY_PRESSED 0x00 +#define REMOTE_KEY_PRESSED 0x01 +#define REMOTE_KEY_REPEAT 0x02 + struct rc_map_table *rc_map_table; + int rc_map_size; + int (*rc_query) (struct dvb_usb_device *, u32 *, int *); + int rc_interval; +}; + +/** + * struct dvb_rc properties of remote controller, using rc-core + * @rc_codes: name of rc codes table + * @protocol: type of protocol(s) currently used by the driver + * @allowed_protos: protocol(s) supported by the driver + * @driver_type: Used to point if a device supports raw mode + * @change_protocol: callback to change protocol + * @rc_query: called to query an event event. + * @rc_interval: time in ms between two queries. + * @bulk_mode: device supports bulk mode for RC (disable polling mode) + */ +struct dvb_rc { + char *rc_codes; + u64 protocol; + u64 allowed_protos; + enum rc_driver_type driver_type; + int (*change_protocol)(struct rc_dev *dev, u64 rc_type); + char *module_name; + int (*rc_query) (struct dvb_usb_device *d); + int rc_interval; + bool bulk_mode; /* uses bulk mode */ +}; + +/** + * enum dvb_usb_mode - Specifies if it is using a legacy driver or a new one + * based on rc-core + * This is initialized/used only inside dvb-usb-remote.c. + * It shouldn't be set by the drivers. + */ +enum dvb_usb_mode { + DVB_RC_LEGACY, + DVB_RC_CORE, +}; + +/** + * struct dvb_usb_device_properties - properties of a dvb-usb-device + * @usb_ctrl: which USB device-side controller is in use. Needed for firmware + * download. + * @firmware: name of the firmware file. + * @download_firmware: called to download the firmware when the usb_ctrl is + * DEVICE_SPECIFIC. + * @no_reconnect: device doesn't do a reconnect after downloading the firmware, + * so do the warm initialization right after it + * + * @size_of_priv: how many bytes shall be allocated for the private field + * of struct dvb_usb_device. + * + * @power_ctrl: called to enable/disable power of the device. + * @read_mac_address: called to read the MAC address of the device. + * @identify_state: called to determine the state (cold or warm), when it + * is not distinguishable by the USB IDs. + * + * @rc: remote controller properties + * + * @i2c_algo: i2c_algorithm if the device has I2CoverUSB. + * + * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic + * endpoint which received control messages with bulk transfers. When this + * is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write- + * helper functions. + * + * @generic_bulk_ctrl_endpoint_response: some DVB USB devices use a separate + * endpoint for responses to control messages sent with bulk transfers via + * the generic_bulk_ctrl_endpoint. When this is non-zero, this will be used + * instead of the generic_bulk_ctrl_endpoint when reading usb responses in + * the dvb_usb_generic_rw helper function. + * + * @num_device_descs: number of struct dvb_usb_device_description in @devices + * @devices: array of struct dvb_usb_device_description compatibles with these + * properties. + */ +#define MAX_NO_OF_ADAPTER_PER_DEVICE 2 +struct dvb_usb_device_properties { + +#define DVB_USB_IS_AN_I2C_ADAPTER 0x01 + int caps; + +#define DEVICE_SPECIFIC 0 +#define CYPRESS_AN2135 1 +#define CYPRESS_AN2235 2 +#define CYPRESS_FX2 3 + int usb_ctrl; + int (*download_firmware) (struct usb_device *, const struct firmware *); + const char *firmware; + int no_reconnect; + + int size_of_priv; + + int num_adapters; + struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE]; + + int (*power_ctrl) (struct dvb_usb_device *, int); + int (*read_mac_address) (struct dvb_usb_device *, u8 []); + int (*identify_state) (struct usb_device *, struct dvb_usb_device_properties *, + struct dvb_usb_device_description **, int *); + + struct { + enum dvb_usb_mode mode; /* Drivers shouldn't touch on it */ + struct dvb_rc_legacy legacy; + struct dvb_rc core; + } rc; + + struct i2c_algorithm *i2c_algo; + + int generic_bulk_ctrl_endpoint; + int generic_bulk_ctrl_endpoint_response; + + int num_device_descs; + struct dvb_usb_device_description devices[12]; +}; + +/** + * struct usb_data_stream - 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 + int 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; +}; + +/** + * struct dvb_usb_adapter - a DVB adapter on a USB device + * @id: index of this adapter (starting with 0). + * + * @feedcount: number of reqested feeds (used for streaming-activation) + * @pid_filtering: is hardware pid_filtering used or not. + * + * @pll_addr: I2C address of the tuner for programming + * @pll_init: array containing the initialization buffer + * @pll_desc: pointer to the appropriate struct dvb_pll_desc + * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board + * + * @dvb_adap: device's dvb_adapter. + * @dmxdev: device's dmxdev. + * @demux: device's software demuxer. + * @dvb_net: device's dvb_net interfaces. + * @dvb_frontend: device's frontend. + * @max_feed_count: how many feeds can be handled simultaneously by this + * device + * + * @fe_init: rerouted frontend-init (wakeup) function. + * @fe_sleep: rerouted frontend-sleep function. + * + * @stream: the usb data stream. + */ +struct dvb_usb_fe_adapter { + struct dvb_frontend *fe; + + int (*fe_init) (struct dvb_frontend *); + int (*fe_sleep) (struct dvb_frontend *); + + struct usb_data_stream stream; + + int pid_filtering; + int max_feed_count; + + void *priv; +}; + +struct dvb_usb_adapter { + struct dvb_usb_device *dev; + struct dvb_usb_adapter_properties props; + +#define DVB_USB_ADAP_STATE_INIT 0x000 +#define DVB_USB_ADAP_STATE_DVB 0x001 + int state; + + u8 id; + + int feedcount; + + /* dvb */ + struct dvb_adapter dvb_adap; + struct dmxdev dmxdev; + struct dvb_demux demux; + struct dvb_net dvb_net; + + struct dvb_usb_fe_adapter fe_adap[MAX_NO_OF_FE_PER_ADAP]; + int active_fe; + int num_frontends_initialized; + + void *priv; +}; + +/** + * struct dvb_usb_device - object of a DVB USB device + * @props: copy of the struct dvb_usb_properties this device belongs to. + * @desc: pointer to the device's struct dvb_usb_device_description. + * @state: initialization and runtime state of the device. + * + * @powered: indicated whether the device is power or not. + * Powered is in/decremented for each call to modify the state. + * @udev: pointer to the device's struct usb_device. + * + * @usb_mutex: semaphore of USB control messages (reading needs two messages) + * @i2c_mutex: semaphore for i2c-transfers + * + * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB + * + * @rc_dev: rc device for the remote control (rc-core mode) + * @input_dev: input device for the remote control (legacy mode) + * @rc_query_work: struct work_struct frequent rc queries + * @last_event: last triggered event + * @last_state: last state (no, pressed, repeat) + * @owner: owner of the dvb_adapter + * @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 { + struct dvb_usb_device_properties props; + struct dvb_usb_device_description *desc; + + struct usb_device *udev; + +#define DVB_USB_STATE_INIT 0x000 +#define DVB_USB_STATE_I2C 0x001 +#define DVB_USB_STATE_DVB 0x002 +#define DVB_USB_STATE_REMOTE 0x004 + int state; + + int powered; + + /* locking */ + struct mutex usb_mutex; + + /* i2c */ + struct mutex i2c_mutex; + struct i2c_adapter i2c_adap; + + int num_adapters_initialized; + struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE]; + + /* remote control */ + struct rc_dev *rc_dev; + struct input_dev *input_dev; + char rc_phys[64]; + struct delayed_work rc_query_work; + u32 last_event; + int last_state; + + struct module *owner; + + void *priv; +}; + +extern int dvb_usbv2_device_init(struct usb_interface *, + struct dvb_usb_device_properties *, + struct module *, struct dvb_usb_device **, + short *adapter_nums); +extern void dvb_usbv2_device_exit(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,int); +extern int dvb_usbv2_generic_write(struct dvb_usb_device *, u8 *, u16); + +/* commonly used remote control parsing */ +extern int dvb_usbv2_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *); + +/* commonly used firmware download types and function */ +struct hexline { + u8 len; + u32 addr; + u8 type; + u8 data[255]; + u8 chk; +}; +extern int usbv2_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type); +extern int dvb_usbv2_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos); + + +#endif diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_common.h b/drivers/media/dvb/dvb-usb/dvb_usb_common.h new file mode 100644 index 000000000000..29df53999a9c --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_common.h @@ -0,0 +1,52 @@ +/* dvb-usb-common.h is part of the DVB USB library. + * + * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * a header file containing prototypes and types for internal use of the dvb-usb-lib + */ +#ifndef DVB_USB_COMMON_H +#define DVB_USB_COMMON_H + +#define DVB_USB_LOG_PREFIX "dvb_usb" +#include "dvb_usb.h" + +extern int dvb_usb_debug; +extern int dvb_usb_disable_rc_polling; + +#define deb_info(args...) dprintk(dvb_usb_debug,0x001,args) +#define deb_xfer(args...) dprintk(dvb_usb_debug,0x002,args) +#define deb_pll(args...) dprintk(dvb_usb_debug,0x004,args) +#define deb_ts(args...) dprintk(dvb_usb_debug,0x008,args) +#define deb_err(args...) dprintk(dvb_usb_debug,0x010,args) +#define deb_rc(args...) dprintk(dvb_usb_debug,0x020,args) +#define deb_fw(args...) dprintk(dvb_usb_debug,0x040,args) +#define deb_mem(args...) dprintk(dvb_usb_debug,0x080,args) +#define deb_uxfer(args...) dprintk(dvb_usb_debug,0x100,args) + +/* commonly used methods */ +extern int dvb_usb_download_firmware(struct usb_device *, struct dvb_usb_device_properties *); + +extern int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff); + +extern int usb_urb_init(struct usb_data_stream *stream, struct usb_data_stream_properties *props); +extern int usb_urb_exit(struct usb_data_stream *stream); +extern int usb_urb_submit(struct usb_data_stream *stream); +extern int usb_urb_kill(struct usb_data_stream *stream); + +extern int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap); +extern int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap); + +extern int dvb_usb_i2c_init(struct dvb_usb_device *); +extern int dvb_usb_i2c_exit(struct dvb_usb_device *); + +extern int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, + short *adapter_nums); +extern int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap); +extern int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap); +extern int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap); + +extern int dvb_usb_remote_init(struct dvb_usb_device *); +extern int dvb_usb_remote_exit(struct dvb_usb_device *); + +#endif diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_dvb.c b/drivers/media/dvb/dvb-usb/dvb_usb_dvb.c new file mode 100644 index 000000000000..59cc26cb24c5 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_dvb.c @@ -0,0 +1,289 @@ +/* dvb-usb-dvb.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file contains functions for initializing and handling the + * linux-dvb API. + */ +#include "dvb_usb_common.h" + +/* does the complete input transfer handling */ +static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff) +{ + struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv; + int newfeedcount, ret; + + if (adap == NULL) + return -ENODEV; + + if ((adap->active_fe < 0) || + (adap->active_fe >= adap->num_frontends_initialized)) { + return -EINVAL; + } + + newfeedcount = adap->feedcount + (onoff ? 1 : -1); + + /* stop feed before setting a new pid if there will be no pid anymore */ + if (newfeedcount == 0) { + deb_ts("stop feeding\n"); + usb_urb_kill(&adap->fe_adap[adap->active_fe].stream); + + if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0); + if (ret < 0) { + err("error while stopping stream."); + return ret; + } + } + } + + adap->feedcount = newfeedcount; + + /* activate the pid on the device specific pid_filter */ + deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n", + adap->fe_adap[adap->active_fe].pid_filtering ? + "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid, + dvbdmxfeed->index, onoff ? "on" : "off"); + if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->fe_adap[adap->active_fe].pid_filtering && + adap->props.fe[adap->active_fe].pid_filter != NULL) + adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff); + + /* start the feed if this was the first feed and there is still a feed + * for reception. + */ + if (adap->feedcount == onoff && adap->feedcount > 0) { + deb_ts("submitting all URBs\n"); + usb_urb_submit(&adap->fe_adap[adap->active_fe].stream); + + deb_ts("controlling pid parser\n"); + if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER && + adap->props.fe[adap->active_fe].caps & + DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF && + adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap, + adap->fe_adap[adap->active_fe].pid_filtering); + if (ret < 0) { + err("could not handle pid_parser"); + return ret; + } + } + deb_ts("start feeding\n"); + if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) { + ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1); + if (ret < 0) { + err("error while enabling fifo."); + return ret; + } + } + + } + return 0; +} + +static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type); + return dvb_usb_ctrl_feed(dvbdmxfeed,1); +} + +static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type); + return dvb_usb_ctrl_feed(dvbdmxfeed,0); +} + +int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) +{ + int i; + int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name, + adap->dev->owner, &adap->dev->udev->dev, + adapter_nums); + + if (ret < 0) { + deb_info("dvb_register_adapter failed: error %d", ret); + goto err; + } + adap->dvb_adap.priv = adap; + adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override; + + if (adap->dev->props.read_mac_address) { + if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0) + info("MAC address: %pM",adap->dvb_adap.proposed_mac); + else + err("MAC address reading failed."); + } + + + adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; + adap->demux.priv = adap; + + adap->demux.filternum = 0; + for (i = 0; i < adap->props.num_frontends; i++) { + if (adap->demux.filternum < adap->fe_adap[i].max_feed_count) + adap->demux.filternum = adap->fe_adap[i].max_feed_count; + } + adap->demux.feednum = adap->demux.filternum; + adap->demux.start_feed = dvb_usb_start_feed; + adap->demux.stop_feed = dvb_usb_stop_feed; + adap->demux.write_to_decoder = NULL; + if ((ret = dvb_dmx_init(&adap->demux)) < 0) { + err("dvb_dmx_init failed: error %d",ret); + goto err_dmx; + } + + adap->dmxdev.filternum = adap->demux.filternum; + adap->dmxdev.demux = &adap->demux.dmx; + adap->dmxdev.capabilities = 0; + if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) { + err("dvb_dmxdev_init failed: error %d",ret); + goto err_dmx_dev; + } + + if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, + &adap->demux.dmx)) < 0) { + err("dvb_net_init failed: error %d",ret); + goto err_net_init; + } + + adap->state |= DVB_USB_ADAP_STATE_DVB; + return 0; + +err_net_init: + dvb_dmxdev_release(&adap->dmxdev); +err_dmx_dev: + dvb_dmx_release(&adap->demux); +err_dmx: + dvb_unregister_adapter(&adap->dvb_adap); +err: + return ret; +} + +int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap) +{ + if (adap->state & DVB_USB_ADAP_STATE_DVB) { + deb_info("unregistering DVB part\n"); + dvb_net_release(&adap->dvb_net); + adap->demux.dmx.close(&adap->demux.dmx); + dvb_dmxdev_release(&adap->dmxdev); + dvb_dmx_release(&adap->demux); + dvb_unregister_adapter(&adap->dvb_adap); + adap->state &= ~DVB_USB_ADAP_STATE_DVB; + } + return 0; +} + +static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + int ret = (adap->props.frontend_ctrl) ? + adap->props.frontend_ctrl(fe, onoff) : 0; + + if (ret < 0) { + err("frontend_ctrl request failed"); + return ret; + } + if (onoff) + adap->active_fe = fe->id; + + return 0; +} + +static int dvb_usb_fe_wakeup(struct dvb_frontend *fe) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + dvb_usb_device_power_ctrl(adap->dev, 1); + + dvb_usb_set_active_fe(fe, 1); + + if (adap->fe_adap[fe->id].fe_init) + adap->fe_adap[fe->id].fe_init(fe); + + return 0; +} + +static int dvb_usb_fe_sleep(struct dvb_frontend *fe) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + + if (adap->fe_adap[fe->id].fe_sleep) + adap->fe_adap[fe->id].fe_sleep(fe); + + dvb_usb_set_active_fe(fe, 0); + + return dvb_usb_device_power_ctrl(adap->dev, 0); +} + +int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) +{ + int ret, i; + + /* register all given adapter frontends */ + for (i = 0; i < adap->props.num_frontends; i++) { + + if (adap->props.fe[i].frontend_attach == NULL) { + err("strange: '%s' #%d,%d " + "doesn't want to attach a frontend.", + adap->dev->desc->name, adap->id, i); + + return 0; + } + + ret = adap->props.fe[i].frontend_attach(adap); + if (ret || adap->fe_adap[i].fe == NULL) { + /* only print error when there is no FE at all */ + if (i == 0) + err("no frontend was attached by '%s'", + adap->dev->desc->name); + + return 0; + } + + adap->fe_adap[i].fe->id = i; + + /* re-assign sleep and wakeup functions */ + adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init; + adap->fe_adap[i].fe->ops.init = dvb_usb_fe_wakeup; + adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep; + adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep; + + if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) { + err("Frontend %d registration failed.", i); + dvb_frontend_detach(adap->fe_adap[i].fe); + adap->fe_adap[i].fe = NULL; + /* In error case, do not try register more FEs, + * still leaving already registered FEs alive. */ + if (i == 0) + return -ENODEV; + else + return 0; + } + + /* only attach the tuner if the demod is there */ + if (adap->props.fe[i].tuner_attach != NULL) + adap->props.fe[i].tuner_attach(adap); + + adap->num_frontends_initialized++; + } + + return 0; +} + +int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) +{ + int i = adap->num_frontends_initialized - 1; + + /* unregister all given adapter frontends */ + for (; i >= 0; i--) { + if (adap->fe_adap[i].fe != NULL) { + dvb_unregister_frontend(adap->fe_adap[i].fe); + dvb_frontend_detach(adap->fe_adap[i].fe); + } + } + adap->num_frontends_initialized = 0; + + return 0; +} diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_firmware.c b/drivers/media/dvb/dvb-usb/dvb_usb_firmware.c new file mode 100644 index 000000000000..20f2ed782dd7 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_firmware.c @@ -0,0 +1,146 @@ +/* dvb-usb-firmware.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices. + * + * FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem. + */ +#include "dvb_usb_common.h" + +#include + +struct usb_cypress_controller { + int id; + const char *name; /* name of the usb controller */ + u16 cpu_cs_register; /* needs to be restarted, when the firmware has been downloaded. */ +}; + +static struct usb_cypress_controller cypress[] = { + { .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 }, + { .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 }, + { .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 }, + { .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 }, +}; + +/* + * load a firmware packet to the device + */ +static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 len) +{ + return usb_control_msg(udev, usb_sndctrlpipe(udev,0), + 0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5000); +} + +int usbv2_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type) +{ + struct hexline hx; + u8 reset; + int ret,pos=0; + + /* stop the CPU */ + reset = 1; + if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1) + err("could not stop the USB controller CPU."); + + while ((ret = dvb_usbv2_get_hexline(fw,&hx,&pos)) > 0) { + deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk); + ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len); + + if (ret != hx.len) { + err("error while transferring firmware " + "(transferred size: %d, block size: %d)", + ret,hx.len); + ret = -EINVAL; + break; + } + } + if (ret < 0) { + err("firmware download failed at %d with %d",pos,ret); + return ret; + } + + if (ret == 0) { + /* restart the CPU */ + reset = 0; + if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) { + err("could not restart the USB controller CPU."); + ret = -EINVAL; + } + } else + ret = -EIO; + + return ret; +} +EXPORT_SYMBOL(usbv2_cypress_load_firmware); + +int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props) +{ + int ret; + const struct firmware *fw = NULL; + + if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) { + err("did not find the firmware file. (%s) " + "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)", + props->firmware,ret); + return ret; + } + + info("downloading firmware from file '%s'",props->firmware); + + switch (props->usb_ctrl) { + case CYPRESS_AN2135: + case CYPRESS_AN2235: + case CYPRESS_FX2: + ret = usbv2_cypress_load_firmware(udev, fw, props->usb_ctrl); + break; + case DEVICE_SPECIFIC: + if (props->download_firmware) + ret = props->download_firmware(udev,fw); + else { + err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one."); + ret = -EINVAL; + } + break; + default: + ret = -EINVAL; + break; + } + + release_firmware(fw); + return ret; +} + +int dvb_usbv2_get_hexline(const struct firmware *fw, struct hexline *hx, + int *pos) +{ + u8 *b = (u8 *) &fw->data[*pos]; + int data_offs = 4; + if (*pos >= fw->size) + return 0; + + memset(hx,0,sizeof(struct hexline)); + + hx->len = b[0]; + + if ((*pos + hx->len + 4) >= fw->size) + return -EINVAL; + + hx->addr = b[1] | (b[2] << 8); + hx->type = b[3]; + + if (hx->type == 0x04) { + /* b[4] and b[5] are the Extended linear address record data field */ + hx->addr |= (b[4] << 24) | (b[5] << 16); +/* hx->len -= 2; + data_offs += 2; */ + } + memcpy(hx->data,&b[data_offs],hx->len); + hx->chk = b[hx->len + data_offs]; + + *pos += hx->len + 5; + + return *pos; +} +EXPORT_SYMBOL(dvb_usbv2_get_hexline); diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_i2c.c b/drivers/media/dvb/dvb-usb/dvb_usb_i2c.c new file mode 100644 index 000000000000..273f4892da01 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_i2c.c @@ -0,0 +1,43 @@ +/* dvb-usb-i2c.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file contains functions for (de-)initializing an I2C adapter. + */ +#include "dvb_usb_common.h" + +int dvb_usb_i2c_init(struct dvb_usb_device *d) +{ + int ret = 0; + + if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER)) + return 0; + + if (d->props.i2c_algo == NULL) { + err("no i2c algorithm specified"); + return -EINVAL; + } + + strlcpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name)); + d->i2c_adap.algo = d->props.i2c_algo; + d->i2c_adap.algo_data = NULL; + d->i2c_adap.dev.parent = &d->udev->dev; + + i2c_set_adapdata(&d->i2c_adap, d); + + if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0) + err("could not add i2c adapter"); + + d->state |= DVB_USB_STATE_I2C; + + return ret; +} + +int dvb_usb_i2c_exit(struct dvb_usb_device *d) +{ + if (d->state & DVB_USB_STATE_I2C) + i2c_del_adapter(&d->i2c_adap); + d->state &= ~DVB_USB_STATE_I2C; + return 0; +} diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_init.c b/drivers/media/dvb/dvb-usb/dvb_usb_init.c new file mode 100644 index 000000000000..4ae30451eb9e --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_init.c @@ -0,0 +1,304 @@ +/* + * DVB USB library - provides a generic interface for a DVB USB device driver. + * + * dvb-usb-init.c + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * + * 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, version 2. + * + * see Documentation/dvb/README.dvb-usb for more information + */ +#include "dvb_usb_common.h" + +/* debug */ +int dvb_usb_debug; +module_param_named(debug, dvb_usb_debug, int, 0644); +MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,pll=4,ts=8,err=16,rc=32,fw=64,mem=128,uxfer=256 (or-able))." DVB_USB_DEBUG_STATUS); + +int dvb_usb_disable_rc_polling; +module_param_named(disable_rc_polling, dvb_usb_disable_rc_polling, int, 0644); +MODULE_PARM_DESC(disable_rc_polling, "disable remote control polling (default: 0)."); + +static int dvb_usb_force_pid_filter_usage; +module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444); +MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0)."); + +static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs) +{ + struct dvb_usb_adapter *adap; + int ret, n, o; + + for (n = 0; n < d->props.num_adapters; n++) { + adap = &d->adapter[n]; + adap->dev = d; + adap->id = n; + + memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties)); + + for (o = 0; o < adap->props.num_frontends; o++) { + struct dvb_usb_adapter_fe_properties *props = &adap->props.fe[o]; + /* speed - when running at FULL speed we need a HW PID filter */ + if (d->udev->speed == USB_SPEED_FULL && !(props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) { + err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)"); + return -ENODEV; + } + + if ((d->udev->speed == USB_SPEED_FULL && props->caps & DVB_USB_ADAP_HAS_PID_FILTER) || + (props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) { + info("will use the device's hardware PID filter (table count: %d).", props->pid_filter_count); + adap->fe_adap[o].pid_filtering = 1; + adap->fe_adap[o].max_feed_count = props->pid_filter_count; + } else { + info("will pass the complete MPEG2 transport stream to the software demuxer."); + adap->fe_adap[o].pid_filtering = 0; + adap->fe_adap[o].max_feed_count = 255; + } + + if (!adap->fe_adap[o].pid_filtering && + dvb_usb_force_pid_filter_usage && + props->caps & DVB_USB_ADAP_HAS_PID_FILTER) { + info("pid filter enabled by module option."); + adap->fe_adap[o].pid_filtering = 1; + adap->fe_adap[o].max_feed_count = props->pid_filter_count; + } + + if (props->size_of_priv > 0) { + adap->fe_adap[o].priv = kzalloc(props->size_of_priv, GFP_KERNEL); + if (adap->fe_adap[o].priv == NULL) { + err("no memory for priv for adapter %d fe %d.", n, o); + return -ENOMEM; + } + } + } + + if (adap->props.size_of_priv > 0) { + adap->priv = kzalloc(adap->props.size_of_priv, GFP_KERNEL); + if (adap->priv == NULL) { + err("no memory for priv for adapter %d.", n); + return -ENOMEM; + } + } + + if ((ret = dvb_usb_adapter_stream_init(adap)) || + (ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) || + (ret = dvb_usb_adapter_frontend_init(adap))) { + return ret; + } + + /* use exclusive FE lock if there is multiple shared FEs */ + if (adap->fe_adap[1].fe) + adap->dvb_adap.mfe_shared = 1; + + d->num_adapters_initialized++; + d->state |= DVB_USB_STATE_DVB; + } + + /* + * when reloading the driver w/o replugging the device + * sometimes a timeout occures, this helps + */ + if (d->props.generic_bulk_ctrl_endpoint != 0) { + usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint)); + usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint)); + } + + return 0; +} + +static int dvb_usb_adapter_exit(struct dvb_usb_device *d) +{ + int n; + + for (n = 0; n < d->num_adapters_initialized; n++) { + dvb_usb_adapter_frontend_exit(&d->adapter[n]); + dvb_usb_adapter_dvb_exit(&d->adapter[n]); + dvb_usb_adapter_stream_exit(&d->adapter[n]); + kfree(d->adapter[n].priv); + } + d->num_adapters_initialized = 0; + d->state &= ~DVB_USB_STATE_DVB; + return 0; +} + + +/* general initialization functions */ +static int dvb_usb_exit(struct dvb_usb_device *d) +{ + deb_info("state before exiting everything: %x\n", d->state); + dvb_usb_remote_exit(d); + dvb_usb_adapter_exit(d); + dvb_usb_i2c_exit(d); + deb_info("state should be zero now: %x\n", d->state); + d->state = DVB_USB_STATE_INIT; + kfree(d->priv); + kfree(d); + return 0; +} + +static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums) +{ + int ret = 0; + + mutex_init(&d->usb_mutex); + mutex_init(&d->i2c_mutex); + + d->state = DVB_USB_STATE_INIT; + + if (d->props.size_of_priv > 0) { + d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL); + if (d->priv == NULL) { + err("no memory for priv in 'struct dvb_usb_device'"); + return -ENOMEM; + } + } + + /* check the capabilities and set appropriate variables */ + dvb_usb_device_power_ctrl(d, 1); + + if ((ret = dvb_usb_i2c_init(d)) || + (ret = dvb_usb_adapter_init(d, adapter_nums))) { + dvb_usb_exit(d); + return ret; + } + + if ((ret = dvb_usb_remote_init(d))) + err("could not initialize remote control."); + + dvb_usb_device_power_ctrl(d, 0); + + return 0; +} + +/* determine the name and the state of the just found USB device */ +static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, struct dvb_usb_device_properties *props, int *cold) +{ + int i, j; + struct dvb_usb_device_description *desc = NULL; + + *cold = -1; + + for (i = 0; i < props->num_device_descs; i++) { + + for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) { + deb_info("check for cold %x %x\n", props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct); + if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && + props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { + *cold = 1; + desc = &props->devices[i]; + break; + } + } + + if (desc != NULL) + break; + + for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) { + deb_info("check for warm %x %x\n", props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct); + if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && + props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { + *cold = 0; + desc = &props->devices[i]; + break; + } + } + } + + if (desc != NULL && props->identify_state != NULL) + props->identify_state(udev, props, &desc, cold); + + return desc; +} + +int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff) +{ + if (onoff) + d->powered++; + else + d->powered--; + + if (d->powered == 0 || (onoff && d->powered == 1)) { /* when switching from 1 to 0 or from 0 to 1 */ + deb_info("power control: %d\n", onoff); + if (d->props.power_ctrl) + return d->props.power_ctrl(d, onoff); + } + return 0; +} + +/* + * USB + */ +int dvb_usbv2_device_init(struct usb_interface *intf, + struct dvb_usb_device_properties *props, + struct module *owner, struct dvb_usb_device **du, + short *adapter_nums) +{ + struct usb_device *udev = interface_to_usbdev(intf); + struct dvb_usb_device *d = NULL; + struct dvb_usb_device_description *desc = NULL; + + int ret = -ENOMEM, cold = 0; + + if (du != NULL) + *du = NULL; + + if ((desc = dvb_usb_find_device(udev, props, &cold)) == NULL) { + deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n"); + return -ENODEV; + } + + if (cold) { + info("found a '%s' in cold state, will try to load a firmware", desc->name); + ret = dvb_usb_download_firmware(udev, props); + if (!props->no_reconnect || ret != 0) + return ret; + } + + info("found a '%s' in warm state.", desc->name); + d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL); + if (d == NULL) { + err("no memory for 'struct dvb_usb_device'"); + return -ENOMEM; + } + + d->udev = udev; + memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties)); + d->desc = desc; + d->owner = owner; + + usb_set_intfdata(intf, d); + + if (du != NULL) + *du = d; + + ret = dvb_usb_init(d, adapter_nums); + + if (ret == 0) + info("%s successfully initialized and connected.", desc->name); + else + info("%s error while loading driver (%d)", desc->name, ret); + return ret; +} +EXPORT_SYMBOL(dvb_usbv2_device_init); + +void dvb_usbv2_device_exit(struct usb_interface *intf) +{ + struct dvb_usb_device *d = usb_get_intfdata(intf); + const char *name = "generic DVB-USB module"; + + usb_set_intfdata(intf, NULL); + if (d != NULL && d->desc != NULL) { + name = d->desc->name; + dvb_usb_exit(d); + } + info("%s successfully deinitialized and disconnected.", name); + +} +EXPORT_SYMBOL(dvb_usbv2_device_exit); + +MODULE_VERSION("1.0"); +MODULE_AUTHOR("Patrick Boettcher "); +MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_remote.c b/drivers/media/dvb/dvb-usb/dvb_usb_remote.c new file mode 100644 index 000000000000..1c6bef62473f --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_remote.c @@ -0,0 +1,391 @@ +/* dvb-usb-remote.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file contains functions for initializing the input-device and for handling remote-control-queries. + */ +#include "dvb_usb_common.h" +#include + +static unsigned int +legacy_dvb_usb_get_keymap_index(const struct input_keymap_entry *ke, + struct rc_map_table *keymap, + unsigned int keymap_size) +{ + unsigned int index; + unsigned int scancode; + + if (ke->flags & INPUT_KEYMAP_BY_INDEX) { + index = ke->index; + } else { + if (input_scancode_to_scalar(ke, &scancode)) + return keymap_size; + + /* See if we can match the raw key code. */ + for (index = 0; index < keymap_size; index++) + if (keymap[index].scancode == scancode) + break; + + /* See if there is an unused hole in the map */ + if (index >= keymap_size) { + for (index = 0; index < keymap_size; index++) { + if (keymap[index].keycode == KEY_RESERVED || + keymap[index].keycode == KEY_UNKNOWN) { + break; + } + } + } + } + + return index; +} + +static int legacy_dvb_usb_getkeycode(struct input_dev *dev, + struct input_keymap_entry *ke) +{ + struct dvb_usb_device *d = input_get_drvdata(dev); + struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; + unsigned int keymap_size = d->props.rc.legacy.rc_map_size; + unsigned int index; + + index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); + if (index >= keymap_size) + return -EINVAL; + + ke->keycode = keymap[index].keycode; + if (ke->keycode == KEY_UNKNOWN) + ke->keycode = KEY_RESERVED; + ke->len = sizeof(keymap[index].scancode); + memcpy(&ke->scancode, &keymap[index].scancode, ke->len); + ke->index = index; + + return 0; +} + +static int legacy_dvb_usb_setkeycode(struct input_dev *dev, + const struct input_keymap_entry *ke, + unsigned int *old_keycode) +{ + struct dvb_usb_device *d = input_get_drvdata(dev); + struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; + unsigned int keymap_size = d->props.rc.legacy.rc_map_size; + unsigned int index; + + index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); + /* + * FIXME: Currently, it is not possible to increase the size of + * scancode table. For it to happen, one possibility + * would be to allocate a table with key_map_size + 1, + * copying data, appending the new key on it, and freeing + * the old one - or maybe just allocating some spare space + */ + if (index >= keymap_size) + return -EINVAL; + + *old_keycode = keymap[index].keycode; + keymap->keycode = ke->keycode; + __set_bit(ke->keycode, dev->keybit); + + if (*old_keycode != KEY_RESERVED) { + __clear_bit(*old_keycode, dev->keybit); + for (index = 0; index < keymap_size; index++) { + if (keymap[index].keycode == *old_keycode) { + __set_bit(*old_keycode, dev->keybit); + break; + } + } + } + + return 0; +} + +/* Remote-control poll function - called every dib->rc_query_interval ms to see + * whether the remote control has received anything. + * + * TODO: Fix the repeat rate of the input device. + */ +static void legacy_dvb_usb_read_remote_control(struct work_struct *work) +{ + struct dvb_usb_device *d = + container_of(work, struct dvb_usb_device, rc_query_work.work); + u32 event; + int state; + + /* TODO: need a lock here. We can simply skip checking for the remote control + if we're busy. */ + + /* when the parameter has been set to 1 via sysfs while the driver was running */ + if (dvb_usb_disable_rc_polling) + return; + + if (d->props.rc.legacy.rc_query(d,&event,&state)) { + err("error while querying for an remote control event."); + goto schedule; + } + + + switch (state) { + case REMOTE_NO_KEY_PRESSED: + break; + case REMOTE_KEY_PRESSED: + deb_rc("key pressed\n"); + d->last_event = event; + case REMOTE_KEY_REPEAT: + deb_rc("key repeated\n"); + input_event(d->input_dev, EV_KEY, event, 1); + input_sync(d->input_dev); + input_event(d->input_dev, EV_KEY, d->last_event, 0); + input_sync(d->input_dev); + break; + default: + break; + } + +/* improved repeat handling ??? + switch (state) { + case REMOTE_NO_KEY_PRESSED: + deb_rc("NO KEY PRESSED\n"); + if (d->last_state != REMOTE_NO_KEY_PRESSED) { + deb_rc("releasing event %d\n",d->last_event); + input_event(d->rc_input_dev, EV_KEY, d->last_event, 0); + input_sync(d->rc_input_dev); + } + d->last_state = REMOTE_NO_KEY_PRESSED; + d->last_event = 0; + break; + case REMOTE_KEY_PRESSED: + deb_rc("KEY PRESSED\n"); + deb_rc("pressing event %d\n",event); + + input_event(d->rc_input_dev, EV_KEY, event, 1); + input_sync(d->rc_input_dev); + + d->last_event = event; + d->last_state = REMOTE_KEY_PRESSED; + break; + case REMOTE_KEY_REPEAT: + deb_rc("KEY_REPEAT\n"); + if (d->last_state != REMOTE_NO_KEY_PRESSED) { + deb_rc("repeating event %d\n",d->last_event); + input_event(d->rc_input_dev, EV_KEY, d->last_event, 2); + input_sync(d->rc_input_dev); + d->last_state = REMOTE_KEY_REPEAT; + } + default: + break; + } +*/ + +schedule: + schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc.legacy.rc_interval)); +} + +static int legacy_dvb_usb_remote_init(struct dvb_usb_device *d) +{ + int i, err, rc_interval; + struct input_dev *input_dev; + + input_dev = input_allocate_device(); + if (!input_dev) + return -ENOMEM; + + input_dev->evbit[0] = BIT_MASK(EV_KEY); + input_dev->name = "IR-receiver inside an USB DVB receiver"; + input_dev->phys = d->rc_phys; + usb_to_input_id(d->udev, &input_dev->id); + input_dev->dev.parent = &d->udev->dev; + d->input_dev = input_dev; + d->rc_dev = NULL; + + input_dev->getkeycode = legacy_dvb_usb_getkeycode; + input_dev->setkeycode = legacy_dvb_usb_setkeycode; + + /* set the bits for the keys */ + deb_rc("key map size: %d\n", d->props.rc.legacy.rc_map_size); + for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { + deb_rc("setting bit for event %d item %d\n", + d->props.rc.legacy.rc_map_table[i].keycode, i); + set_bit(d->props.rc.legacy.rc_map_table[i].keycode, input_dev->keybit); + } + + /* setting these two values to non-zero, we have to manage key repeats */ + input_dev->rep[REP_PERIOD] = d->props.rc.legacy.rc_interval; + input_dev->rep[REP_DELAY] = d->props.rc.legacy.rc_interval + 150; + + input_set_drvdata(input_dev, d); + + err = input_register_device(input_dev); + if (err) + input_free_device(input_dev); + + rc_interval = d->props.rc.legacy.rc_interval; + + INIT_DELAYED_WORK(&d->rc_query_work, legacy_dvb_usb_read_remote_control); + + info("schedule remote query interval to %d msecs.", rc_interval); + schedule_delayed_work(&d->rc_query_work, + msecs_to_jiffies(rc_interval)); + + d->state |= DVB_USB_STATE_REMOTE; + + return err; +} + +/* Remote-control poll function - called every dib->rc_query_interval ms to see + * whether the remote control has received anything. + * + * TODO: Fix the repeat rate of the input device. + */ +static void dvb_usb_read_remote_control(struct work_struct *work) +{ + struct dvb_usb_device *d = + container_of(work, struct dvb_usb_device, rc_query_work.work); + int err; + + /* TODO: need a lock here. We can simply skip checking for the remote control + if we're busy. */ + + /* when the parameter has been set to 1 via sysfs while the + * driver was running, or when bulk mode is enabled after IR init + */ + if (dvb_usb_disable_rc_polling || d->props.rc.core.bulk_mode) + return; + + err = d->props.rc.core.rc_query(d); + if (err) + err("error %d while querying for an remote control event.", err); + + schedule_delayed_work(&d->rc_query_work, + msecs_to_jiffies(d->props.rc.core.rc_interval)); +} + +static int rc_core_dvb_usb_remote_init(struct dvb_usb_device *d) +{ + int err, rc_interval; + struct rc_dev *dev; + + dev = rc_allocate_device(); + if (!dev) + return -ENOMEM; + + dev->driver_name = d->props.rc.core.module_name; + dev->map_name = d->props.rc.core.rc_codes; + dev->change_protocol = d->props.rc.core.change_protocol; + dev->allowed_protos = d->props.rc.core.allowed_protos; + dev->driver_type = d->props.rc.core.driver_type; + usb_to_input_id(d->udev, &dev->input_id); + dev->input_name = "IR-receiver inside an USB DVB receiver"; + dev->input_phys = d->rc_phys; + dev->dev.parent = &d->udev->dev; + dev->priv = d; + + err = rc_register_device(dev); + if (err < 0) { + rc_free_device(dev); + return err; + } + + d->input_dev = NULL; + d->rc_dev = dev; + + if (!d->props.rc.core.rc_query || d->props.rc.core.bulk_mode) + return 0; + + /* Polling mode - initialize a work queue for handling it */ + INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control); + + rc_interval = d->props.rc.core.rc_interval; + + info("schedule remote query interval to %d msecs.", rc_interval); + schedule_delayed_work(&d->rc_query_work, + msecs_to_jiffies(rc_interval)); + + return 0; +} + +int dvb_usb_remote_init(struct dvb_usb_device *d) +{ + int err; + + if (dvb_usb_disable_rc_polling) + return 0; + + if (d->props.rc.legacy.rc_map_table && d->props.rc.legacy.rc_query) + d->props.rc.mode = DVB_RC_LEGACY; + else if (d->props.rc.core.rc_codes) + d->props.rc.mode = DVB_RC_CORE; + else + return 0; + + usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys)); + strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys)); + + /* Start the remote-control polling. */ + if (d->props.rc.legacy.rc_interval < 40) + d->props.rc.legacy.rc_interval = 100; /* default */ + + if (d->props.rc.mode == DVB_RC_LEGACY) + err = legacy_dvb_usb_remote_init(d); + else + err = rc_core_dvb_usb_remote_init(d); + if (err) + return err; + + d->state |= DVB_USB_STATE_REMOTE; + + return 0; +} + +int dvb_usb_remote_exit(struct dvb_usb_device *d) +{ + if (d->state & DVB_USB_STATE_REMOTE) { + cancel_delayed_work_sync(&d->rc_query_work); + if (d->props.rc.mode == DVB_RC_LEGACY) + input_unregister_device(d->input_dev); + else + rc_unregister_device(d->rc_dev); + } + d->state &= ~DVB_USB_STATE_REMOTE; + return 0; +} + +#define DVB_USB_RC_NEC_EMPTY 0x00 +#define DVB_USB_RC_NEC_KEY_PRESSED 0x01 +#define DVB_USB_RC_NEC_KEY_REPEATED 0x02 +int dvb_usbv2_nec_rc_key_to_event(struct dvb_usb_device *d, + u8 keybuf[5], u32 *event, int *state) +{ + int i; + struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; + *event = 0; + *state = REMOTE_NO_KEY_PRESSED; + switch (keybuf[0]) { + case DVB_USB_RC_NEC_EMPTY: + break; + case DVB_USB_RC_NEC_KEY_PRESSED: + if ((u8) ~keybuf[1] != keybuf[2] || + (u8) ~keybuf[3] != keybuf[4]) { + deb_err("remote control checksum failed.\n"); + break; + } + /* See if we can match the raw key code. */ + for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) + if (rc5_custom(&keymap[i]) == keybuf[1] && + rc5_data(&keymap[i]) == keybuf[3]) { + *event = keymap[i].keycode; + *state = REMOTE_KEY_PRESSED; + return 0; + } + deb_err("key mapping failed - no appropriate key found in keymapping\n"); + break; + case DVB_USB_RC_NEC_KEY_REPEATED: + *state = REMOTE_KEY_REPEAT; + break; + default: + deb_err("unknown type of remote status: %d\n",keybuf[0]); + break; + } + return 0; +} +EXPORT_SYMBOL(dvb_usbv2_nec_rc_key_to_event); diff --git a/drivers/media/dvb/dvb-usb/dvb_usb_urb.c b/drivers/media/dvb/dvb-usb/dvb_usb_urb.c new file mode 100644 index 000000000000..c4b7845373e2 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb_usb_urb.c @@ -0,0 +1,121 @@ +/* dvb-usb-urb.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file keeps functions for initializing and handling the + * USB and URB stuff. + */ +#include "dvb_usb_common.h" + +int dvb_usbv2_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf, + u16 rlen, int delay_ms) +{ + int actlen,ret = -ENOMEM; + + if (!d || wbuf == NULL || wlen == 0) + return -EINVAL; + + if (d->props.generic_bulk_ctrl_endpoint == 0) { + err("endpoint for generic control not specified."); + return -EINVAL; + } + + if ((ret = mutex_lock_interruptible(&d->usb_mutex))) + return ret; + + deb_xfer(">>> "); + debug_dump(wbuf,wlen,deb_xfer); + + ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev, + d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen, + 2000); + + if (ret) + err("bulk message failed: %d (%d/%d)",ret,wlen,actlen); + else + ret = actlen != wlen ? -1 : 0; + + /* an answer is expected, and no error before */ + if (!ret && rbuf && rlen) { + if (delay_ms) + msleep(delay_ms); + + ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev, + d->props.generic_bulk_ctrl_endpoint_response ? + d->props.generic_bulk_ctrl_endpoint_response : + d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen, + 2000); + + if (ret) + err("recv bulk message failed: %d",ret); + else { + deb_xfer("<<< "); + debug_dump(rbuf,actlen,deb_xfer); + } + } + + mutex_unlock(&d->usb_mutex); + return ret; +} +EXPORT_SYMBOL(dvb_usbv2_generic_rw); + +int dvb_usbv2_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len) +{ + return dvb_usbv2_generic_rw(d,buf,len,NULL,0,0); +} +EXPORT_SYMBOL(dvb_usbv2_generic_write); + +static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length) +{ + struct dvb_usb_adapter *adap = stream->user_priv; + if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) + dvb_dmx_swfilter(&adap->demux, buffer, length); +} + +static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length) +{ + struct dvb_usb_adapter *adap = stream->user_priv; + if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) + dvb_dmx_swfilter_204(&adap->demux, buffer, length); +} + +static void dvb_usb_data_complete_raw(struct usb_data_stream *stream, + u8 *buffer, size_t length) +{ + struct dvb_usb_adapter *adap = stream->user_priv; + if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) + dvb_dmx_swfilter_raw(&adap->demux, buffer, length); +} + +int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap) +{ + int i, ret = 0; + for (i = 0; i < adap->props.num_frontends; i++) { + + adap->fe_adap[i].stream.udev = adap->dev->udev; + if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS) + adap->fe_adap[i].stream.complete = + dvb_usb_data_complete_204; + else + if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD) + adap->fe_adap[i].stream.complete = + dvb_usb_data_complete_raw; + else + adap->fe_adap[i].stream.complete = dvb_usb_data_complete; + adap->fe_adap[i].stream.user_priv = adap; + ret = usb_urb_init(&adap->fe_adap[i].stream, + &adap->props.fe[i].stream); + if (ret < 0) + break; + } + return ret; +} + +int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap) +{ + int i; + for (i = 0; i < adap->props.num_frontends; i++) + usb_urb_exit(&adap->fe_adap[i].stream); + return 0; +} diff --git a/drivers/media/dvb/dvb-usb/usb_urb.c b/drivers/media/dvb/dvb-usb/usb_urb.c new file mode 100644 index 000000000000..bf1915367cb9 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/usb_urb.c @@ -0,0 +1,254 @@ +/* usb-urb.c is part of the DVB USB library. + * + * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) + * see dvb-usb-init.c for copyright information. + * + * This file keeps functions for initializing and handling the + * BULK and ISOC USB data transfers in a generic way. + * Can be used for DVB-only and also, that's the plan, for + * Hybrid USB devices (analog and DVB). + */ +#include "dvb_usb_common.h" + +/* URB stuff for streaming */ +static void usb_urb_complete(struct urb *urb) +{ + struct usb_data_stream *stream = urb->context; + int ptype = usb_pipetype(urb->pipe); + int i; + u8 *b; + + deb_uxfer("'%s' urb completed. status: %d, length: %d/%d, pack_num: %d, errors: %d\n", + ptype == PIPE_ISOCHRONOUS ? "isoc" : "bulk", + urb->status,urb->actual_length,urb->transfer_buffer_length, + urb->number_of_packets,urb->error_count); + + switch (urb->status) { + case 0: /* success */ + case -ETIMEDOUT: /* NAK */ + break; + case -ECONNRESET: /* kill */ + case -ENOENT: + case -ESHUTDOWN: + return; + default: /* error */ + deb_ts("urb completition error %d.\n", urb->status); + break; + } + + b = (u8 *) urb->transfer_buffer; + switch (ptype) { + case PIPE_ISOCHRONOUS: + for (i = 0; i < urb->number_of_packets; i++) { + + if (urb->iso_frame_desc[i].status != 0) + deb_ts("iso frame descriptor has an error: %d\n",urb->iso_frame_desc[i].status); + else if (urb->iso_frame_desc[i].actual_length > 0) + stream->complete(stream, b + urb->iso_frame_desc[i].offset, urb->iso_frame_desc[i].actual_length); + + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = 0; + } + debug_dump(b,20,deb_uxfer); + break; + case PIPE_BULK: + if (urb->actual_length > 0) + stream->complete(stream, b, urb->actual_length); + break; + default: + err("unknown endpoint type in completition handler."); + return; + } + usb_submit_urb(urb,GFP_ATOMIC); +} + +int usb_urb_kill(struct usb_data_stream *stream) +{ + int i; + for (i = 0; i < stream->urbs_submitted; i++) { + deb_ts("killing URB no. %d.\n",i); + + /* stop the URB */ + usb_kill_urb(stream->urb_list[i]); + } + stream->urbs_submitted = 0; + return 0; +} + +int usb_urb_submit(struct usb_data_stream *stream) +{ + int i,ret; + for (i = 0; i < stream->urbs_initialized; i++) { + deb_ts("submitting URB no. %d\n",i); + if ((ret = usb_submit_urb(stream->urb_list[i],GFP_ATOMIC))) { + err("could not submit URB no. %d - get them all back",i); + usb_urb_kill(stream); + return ret; + } + stream->urbs_submitted++; + } + return 0; +} + +static int usb_free_stream_buffers(struct usb_data_stream *stream) +{ + if (stream->state & USB_STATE_URB_BUF) { + while (stream->buf_num) { + stream->buf_num--; + deb_mem("freeing buffer %d\n",stream->buf_num); + usb_free_coherent(stream->udev, stream->buf_size, + stream->buf_list[stream->buf_num], + stream->dma_addr[stream->buf_num]); + } + } + + stream->state &= ~USB_STATE_URB_BUF; + + return 0; +} + +static int usb_allocate_stream_buffers(struct usb_data_stream *stream, int num, unsigned long size) +{ + stream->buf_num = 0; + stream->buf_size = size; + + deb_mem("all in all I will use %lu bytes for streaming\n",num*size); + + for (stream->buf_num = 0; stream->buf_num < num; stream->buf_num++) { + deb_mem("allocating buffer %d\n",stream->buf_num); + if (( stream->buf_list[stream->buf_num] = + usb_alloc_coherent(stream->udev, size, GFP_ATOMIC, + &stream->dma_addr[stream->buf_num]) ) == NULL) { + deb_mem("not enough memory for urb-buffer allocation.\n"); + usb_free_stream_buffers(stream); + return -ENOMEM; + } + deb_mem("buffer %d: %p (dma: %Lu)\n", + stream->buf_num, +stream->buf_list[stream->buf_num], (long long)stream->dma_addr[stream->buf_num]); + memset(stream->buf_list[stream->buf_num],0,size); + stream->state |= USB_STATE_URB_BUF; + } + deb_mem("allocation successful\n"); + + return 0; +} + +static int usb_bulk_urb_init(struct usb_data_stream *stream) +{ + int i, j; + + if ((i = usb_allocate_stream_buffers(stream,stream->props.count, + stream->props.u.bulk.buffersize)) < 0) + return i; + + /* allocate the URBs */ + for (i = 0; i < stream->props.count; i++) { + stream->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC); + if (!stream->urb_list[i]) { + deb_mem("not enough memory for urb_alloc_urb!.\n"); + for (j = 0; j < i; j++) + usb_free_urb(stream->urb_list[j]); + return -ENOMEM; + } + usb_fill_bulk_urb( stream->urb_list[i], stream->udev, + usb_rcvbulkpipe(stream->udev,stream->props.endpoint), + stream->buf_list[i], + stream->props.u.bulk.buffersize, + usb_urb_complete, stream); + + stream->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; + stream->urb_list[i]->transfer_dma = stream->dma_addr[i]; + stream->urbs_initialized++; + } + return 0; +} + +static int usb_isoc_urb_init(struct usb_data_stream *stream) +{ + int i,j; + + if ((i = usb_allocate_stream_buffers(stream,stream->props.count, + stream->props.u.isoc.framesize*stream->props.u.isoc.framesperurb)) < 0) + return i; + + /* allocate the URBs */ + for (i = 0; i < stream->props.count; i++) { + struct urb *urb; + int frame_offset = 0; + + stream->urb_list[i] = usb_alloc_urb(stream->props.u.isoc.framesperurb, GFP_ATOMIC); + if (!stream->urb_list[i]) { + deb_mem("not enough memory for urb_alloc_urb!\n"); + for (j = 0; j < i; j++) + usb_free_urb(stream->urb_list[j]); + return -ENOMEM; + } + + urb = stream->urb_list[i]; + + urb->dev = stream->udev; + urb->context = stream; + urb->complete = usb_urb_complete; + urb->pipe = usb_rcvisocpipe(stream->udev,stream->props.endpoint); + urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; + urb->interval = stream->props.u.isoc.interval; + urb->number_of_packets = stream->props.u.isoc.framesperurb; + urb->transfer_buffer_length = stream->buf_size; + urb->transfer_buffer = stream->buf_list[i]; + urb->transfer_dma = stream->dma_addr[i]; + + for (j = 0; j < stream->props.u.isoc.framesperurb; j++) { + urb->iso_frame_desc[j].offset = frame_offset; + urb->iso_frame_desc[j].length = stream->props.u.isoc.framesize; + frame_offset += stream->props.u.isoc.framesize; + } + + stream->urbs_initialized++; + } + return 0; +} + +int usb_urb_init(struct usb_data_stream *stream, struct usb_data_stream_properties *props) +{ + if (stream == NULL || props == NULL) + return -EINVAL; + + memcpy(&stream->props, props, sizeof(*props)); + + usb_clear_halt(stream->udev,usb_rcvbulkpipe(stream->udev,stream->props.endpoint)); + + if (stream->complete == NULL) { + err("there is no data callback - this doesn't make sense."); + return -EINVAL; + } + + switch (stream->props.type) { + case USB_BULK: + return usb_bulk_urb_init(stream); + case USB_ISOC: + return usb_isoc_urb_init(stream); + default: + err("unknown URB-type for data transfer."); + return -EINVAL; + } +} + +int usb_urb_exit(struct usb_data_stream *stream) +{ + int i; + + usb_urb_kill(stream); + + for (i = 0; i < stream->urbs_initialized; i++) { + if (stream->urb_list[i] != NULL) { + deb_mem("freeing URB no. %d.\n",i); + /* free the URBs */ + usb_free_urb(stream->urb_list[i]); + } + } + stream->urbs_initialized = 0; + + usb_free_stream_buffers(stream); + return 0; +} -- 2.20.1