Commit bb478555 authored by Stephane Grosjean's avatar Stephane Grosjean Committed by Marc Kleine-Budde

can: usb: PEAK-System Technik USB adapters driver core

This patch adds the core of the peak_usb driver which handles PEAK-System
Technik PCAN USB adapters. It defines the parts which are common to the
PCAN-USB adapters: can network interfaces management, network-to/from-usb
data path interface, timestamps management...
Tested-by: default avatarOliver Hartkopp <socketcan@hartkopp.net>
Acked-by: default avatarWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: default avatarStephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 2b61972b
......@@ -13,4 +13,10 @@ config CAN_ESD_USB2
This driver supports the CAN-USB/2 interface
from esd electronic system design gmbh (http://www.esd.eu).
config CAN_PEAK_USB
tristate "PEAK PCAN-USB/USB Pro interfaces"
---help---
This driver supports the PCAN-USB and PCAN-USB Pro adapters
from PEAK-System Technik (http://www.peak-system.com).
endmenu
......@@ -4,5 +4,6 @@
obj-$(CONFIG_CAN_EMS_USB) += ems_usb.o
obj-$(CONFIG_CAN_ESD_USB2) += esd_usb2.o
obj-$(CONFIG_CAN_PEAK_USB) += peak_usb/
ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG
obj-$(CONFIG_CAN_PEAK_USB) += peak_usb.o
peak_usb-y = pcan_usb_core.o
This diff is collapsed.
/*
* CAN driver for PEAK System USB adapters
* Derived from the PCAN project file driver/src/pcan_usb_core.c
*
* Copyright (C) 2003-2010 PEAK System-Technik GmbH
* Copyright (C) 2010-2012 Stephane Grosjean <s.grosjean@peak-system.com>
*
* Many thanks to Klaus Hitschler <klaus.hitschler@gmx.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 of the License.
*
* 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.
*/
#ifndef PCAN_USB_CORE_H
#define PCAN_USB_CORE_H
/* PEAK-System vendor id. */
#define PCAN_USB_VENDOR_ID 0x0c72
/* supported device ids. */
#define PCAN_USB_PRODUCT_ID 0x000c
#define PCAN_USBPRO_PRODUCT_ID 0x000d
#define PCAN_USB_DRIVER_NAME "peak_usb"
/* number of urbs that are submitted for rx/tx per channel */
#define PCAN_USB_MAX_RX_URBS 4
#define PCAN_USB_MAX_TX_URBS 10
/* usb adapters maximum channels per usb interface */
#define PCAN_USB_MAX_CHANNEL 2
/* maximum length of the usb commands sent to/received from the devices */
#define PCAN_USB_MAX_CMD_LEN 32
struct peak_usb_device;
/* PEAK-System USB adapter descriptor */
struct peak_usb_adapter {
char *name;
u32 device_id;
struct can_clock clock;
struct can_bittiming_const bittiming_const;
unsigned int ctrl_count;
int (*intf_probe)(struct usb_interface *intf);
int (*dev_init)(struct peak_usb_device *dev);
void (*dev_exit)(struct peak_usb_device *dev);
void (*dev_free)(struct peak_usb_device *dev);
int (*dev_open)(struct peak_usb_device *dev);
int (*dev_close)(struct peak_usb_device *dev);
int (*dev_set_bittiming)(struct peak_usb_device *dev,
struct can_bittiming *bt);
int (*dev_set_bus)(struct peak_usb_device *dev, u8 onoff);
int (*dev_get_device_id)(struct peak_usb_device *dev, u32 *device_id);
int (*dev_decode_buf)(struct peak_usb_device *dev, struct urb *urb);
int (*dev_encode_msg)(struct peak_usb_device *dev, struct sk_buff *skb,
u8 *obuf, size_t *size);
int (*dev_start)(struct peak_usb_device *dev);
int (*dev_stop)(struct peak_usb_device *dev);
int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb,
u8 *buf);
u8 ep_msg_in;
u8 ep_msg_out[PCAN_USB_MAX_CHANNEL];
u8 ts_used_bits;
u32 ts_period;
u8 us_per_ts_shift;
u32 us_per_ts_scale;
int rx_buffer_size;
int tx_buffer_size;
int sizeof_dev_private;
};
extern struct peak_usb_adapter pcan_usb;
extern struct peak_usb_adapter pcan_usb_pro;
struct peak_time_ref {
struct timeval tv_host_0, tv_host;
u32 ts_dev_1, ts_dev_2;
u64 ts_total;
u32 tick_count;
struct peak_usb_adapter *adapter;
};
struct peak_tx_urb_context {
struct peak_usb_device *dev;
u32 echo_index;
u8 dlc;
struct urb *urb;
};
#define PCAN_USB_STATE_CONNECTED 0x00000001
#define PCAN_USB_STATE_STARTED 0x00000002
/* PEAK-System USB device */
struct peak_usb_device {
struct can_priv can;
struct peak_usb_adapter *adapter;
unsigned int ctrl_idx;
int open_time;
u32 state;
struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS];
struct usb_device *udev;
struct net_device *netdev;
atomic_t active_tx_urbs;
struct usb_anchor tx_submitted;
struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS];
u8 *cmd_buf;
struct usb_anchor rx_submitted;
u32 device_number;
u8 device_rev;
u8 ep_msg_in;
u8 ep_msg_out;
u16 bus_load;
struct peak_usb_device *prev_siblings;
struct peak_usb_device *next_siblings;
};
void dump_mem(char *prompt, void *p, int l);
/* common timestamp management */
void peak_usb_init_time_ref(struct peak_time_ref *time_ref,
struct peak_usb_adapter *adapter);
void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts,
struct timeval *tv);
void peak_usb_async_complete(struct urb *urb);
void peak_usb_restart_complete(struct peak_usb_device *dev);
#endif
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