Commit 0a25e1f4 authored by Stephane Grosjean's avatar Stephane Grosjean Committed by Marc Kleine-Budde
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can: peak_usb: add support for PEAK new CANFD USB adapters 



Add support for the following new PEAK-System technik CANFD USB adapters:

PCAN-USB FD             single CANFD channel USB adapter
PCAN-USB Pro FD         dual CANFD channels USB adapter

Signed-off-by: default avatarStephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: default avatarOliver Hartkopp <socketcan@hartkopp.net>
Acked-by: default avatarAndri Yngvason <andri.yngvason@marel.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent faa233d9

drivers/net/can/usb/Kconfig

+11 −3
Original line number Diff line number Diff line
@@ -59,10 +59,18 @@ config CAN_KVASER_USB 
	  module will be called kvaser_usb.



config CAN_PEAK_USB

	tristate "PEAK PCAN-USB/USB Pro interfaces"

	tristate "PEAK PCAN-USB/USB Pro interfaces for CAN 2.0b/CAN-FD"

	---help---

	  This driver supports the PCAN-USB and PCAN-USB Pro adapters

	  from PEAK-System Technik (http://www.peak-system.com).

	  This driver supports the PEAK-System Technik USB adapters that enable

	  access to the CAN bus, with repect to the CAN 2.0b and/or CAN-FD

	  standards, that is:



	  PCAN-USB             single CAN 2.0b channel USB adapter

	  PCAN-USB Pro         dual CAN 2.0b channels USB adapter

	  PCAN-USB FD          single CAN-FD channel USB adapter

	  PCAN-USB Pro FD      dual CAN-FD channels USB adapter



	  (see also http://www.peak-system.com).



config CAN_8DEV_USB

	tristate "8 devices USB2CAN interface"

drivers/net/can/usb/peak_usb/Makefile

+1 −1
Original line number Diff line number Diff line 
obj-$(CONFIG_CAN_PEAK_USB) += peak_usb.o

peak_usb-y = pcan_usb_core.o pcan_usb.o pcan_usb_pro.o
 
peak_usb-y = pcan_usb_core.o pcan_usb.o pcan_usb_pro.o pcan_usb_fd.o

drivers/net/can/usb/peak_usb/pcan_ucan.h

0 → 100644
+222 −0
Original line number Diff line number Diff line 
/*

 * CAN driver for PEAK System micro-CAN based adapters

 *

 * Copyright (C) 2003-2011 PEAK System-Technik GmbH

 * Copyright (C) 2011-2013 Stephane Grosjean <s.grosjean@peak-system.com>

 *

 * 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 PUCAN_H

#define PUCAN_H



/* uCAN commands opcodes list (low-order 10 bits) */

#define PUCAN_CMD_NOP			0x000

#define PUCAN_CMD_RESET_MODE		0x001

#define PUCAN_CMD_NORMAL_MODE		0x002

#define PUCAN_CMD_LISTEN_ONLY_MODE	0x003

#define PUCAN_CMD_TIMING_SLOW		0x004

#define PUCAN_CMD_TIMING_FAST		0x005

#define PUCAN_CMD_FILTER_STD		0x008

#define PUCAN_CMD_TX_ABORT		0x009

#define PUCAN_CMD_WR_ERR_CNT		0x00a

#define PUCAN_CMD_RX_FRAME_ENABLE	0x00b

#define PUCAN_CMD_RX_FRAME_DISABLE	0x00c

#define PUCAN_CMD_END_OF_COLLECTION	0x3ff



/* uCAN received messages list */

#define PUCAN_MSG_CAN_RX		0x0001

#define PUCAN_MSG_ERROR			0x0002

#define PUCAN_MSG_STATUS		0x0003

#define PUCAN_MSG_BUSLOAD		0x0004

#define PUCAN_MSG_CAN_TX		0x1000



/* uCAN command common header */

struct __packed pucan_command {

	__le16	opcode_channel;

	u16	args[3];

};



/* uCAN TIMING_SLOW command fields */

#define PUCAN_TSLOW_SJW_T(s, t)		(((s) & 0xf) | ((!!(t)) << 7))

#define PUCAN_TSLOW_TSEG2(t)		((t) & 0xf)

#define PUCAN_TSLOW_TSEG1(t)		((t) & 0x3f)

#define PUCAN_TSLOW_BRP(b)		((b) & 0x3ff)



struct __packed pucan_timing_slow {

	__le16	opcode_channel;



	u8	ewl;		/* Error Warning limit */

	u8	sjw_t;		/* Sync Jump Width + Triple sampling */

	u8	tseg2;		/* Timing SEGment 2 */

	u8	tseg1;		/* Timing SEGment 1 */



	__le16	brp;		/* BaudRate Prescaler */

};



/* uCAN TIMING_FAST command fields */

#define PUCAN_TFAST_SJW(s)		((s) & 0x3)

#define PUCAN_TFAST_TSEG2(t)		((t) & 0x7)

#define PUCAN_TFAST_TSEG1(t)		((t) & 0xf)

#define PUCAN_TFAST_BRP(b)		((b) & 0x3ff)



struct __packed pucan_timing_fast {

	__le16	opcode_channel;



	u8	unused;

	u8	sjw;		/* Sync Jump Width */

	u8	tseg2;		/* Timing SEGment 2 */

	u8	tseg1;		/* Timing SEGment 1 */



	__le16	brp;		/* BaudRate Prescaler */

};



/* uCAN FILTER_STD command fields */

#define PUCAN_FLTSTD_ROW_IDX_BITS	6



struct __packed pucan_filter_std {

	__le16	opcode_channel;



	__le16	idx;

	__le32	mask;		/* CAN-ID bitmask in idx range */

};



/* uCAN WR_ERR_CNT command fields */

#define PUCAN_WRERRCNT_TE		0x4000	/* Tx error cntr write Enable */

#define PUCAN_WRERRCNT_RE		0x8000	/* Rx error cntr write Enable */



struct __packed pucan_wr_err_cnt {

	__le16	opcode_channel;



	__le16	sel_mask;

	u8	tx_counter;	/* Tx error counter new value */

	u8	rx_counter;	/* Rx error counter new value */



	u16	unused;

};



/* uCAN RX_FRAME_ENABLE command fields */

#define PUCAN_FLTEXT_ERROR		0x0001

#define PUCAN_FLTEXT_BUSLOAD		0x0002



struct __packed pucan_filter_ext {

	__le16	opcode_channel;



	__le16	ext_mask;

	u32	unused;

};



/* uCAN received messages global format */

struct __packed pucan_msg {

	__le16	size;

	__le16	type;

	__le32	ts_low;

	__le32	ts_high;

};



/* uCAN flags for CAN/CANFD messages */

#define PUCAN_MSG_SELF_RECEIVE		0x80

#define PUCAN_MSG_ERROR_STATE_IND	0x40	/* error state indicator */

#define PUCAN_MSG_BITRATE_SWITCH	0x20	/* bitrate switch */

#define PUCAN_MSG_EXT_DATA_LEN		0x10	/* extended data length */

#define PUCAN_MSG_SINGLE_SHOT		0x08

#define PUCAN_MSG_LOOPED_BACK		0x04

#define PUCAN_MSG_EXT_ID		0x02

#define PUCAN_MSG_RTR			0x01



struct __packed pucan_rx_msg {

	__le16	size;

	__le16	type;

	__le32	ts_low;

	__le32	ts_high;

	__le32	tag_low;

	__le32	tag_high;

	u8	channel_dlc;

	u8	client;

	__le16	flags;

	__le32	can_id;

	u8	d[0];

};



/* uCAN error types */

#define PUCAN_ERMSG_BIT_ERROR		0

#define PUCAN_ERMSG_FORM_ERROR		1

#define PUCAN_ERMSG_STUFF_ERROR		2

#define PUCAN_ERMSG_OTHER_ERROR		3

#define PUCAN_ERMSG_ERR_CNT_DEC		4



struct __packed pucan_error_msg {

	__le16	size;

	__le16	type;

	__le32	ts_low;

	__le32	ts_high;

	u8	channel_type_d;

	u8	code_g;

	u8	tx_err_cnt;

	u8	rx_err_cnt;

};



#define PUCAN_BUS_PASSIVE		0x20

#define PUCAN_BUS_WARNING		0x40

#define PUCAN_BUS_BUSOFF		0x80



struct __packed pucan_status_msg {

	__le16	size;

	__le16	type;

	__le32	ts_low;

	__le32	ts_high;

	u8	channel_p_w_b;

	u8	unused[3];

};



/* uCAN transmitted message format */

#define PUCAN_MSG_CHANNEL_DLC(c, d)	(((c) & 0xf) | ((d) << 4))



struct __packed pucan_tx_msg {

	__le16	size;

	__le16	type;

	__le32	tag_low;

	__le32	tag_high;

	u8	channel_dlc;

	u8	client;

	__le16	flags;

	__le32	can_id;

	u8	d[0];

};



/* build the cmd opcode_channel field with respect to the correct endianness */

static inline __le16 pucan_cmd_opcode_channel(struct peak_usb_device *dev,

					      int opcode)

{

	return cpu_to_le16(((dev->ctrl_idx) << 12) | ((opcode) & 0x3ff));

}



/* return the channel number part from any received message channel_dlc field */

static inline int pucan_msg_get_channel(struct pucan_rx_msg *rm)

{

	return rm->channel_dlc & 0xf;

}



/* return the dlc value from any received message channel_dlc field */

static inline int pucan_msg_get_dlc(struct pucan_rx_msg *rm)

{

	return rm->channel_dlc >> 4;

}



static inline int pucan_ermsg_get_channel(struct pucan_error_msg *em)

{

	return em->channel_type_d & 0x0f;

}



static inline int pucan_stmsg_get_channel(struct pucan_status_msg *sm)

{

	return sm->channel_p_w_b & 0x0f;

}



#endif

drivers/net/can/usb/peak_usb/pcan_usb_core.c

+4 −0
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ MODULE_LICENSE("GPL v2"); 
static struct usb_device_id peak_usb_table[] = {

	{USB_DEVICE(PCAN_USB_VENDOR_ID, PCAN_USB_PRODUCT_ID)},

	{USB_DEVICE(PCAN_USB_VENDOR_ID, PCAN_USBPRO_PRODUCT_ID)},

	{USB_DEVICE(PCAN_USB_VENDOR_ID, PCAN_USBFD_PRODUCT_ID)},

	{USB_DEVICE(PCAN_USB_VENDOR_ID, PCAN_USBPROFD_PRODUCT_ID)},

	{} /* Terminating entry */

};
@@ -46,6 +48,8 @@ MODULE_DEVICE_TABLE(usb, peak_usb_table); 
static const struct peak_usb_adapter *const peak_usb_adapters_list[] = {

	&pcan_usb,

	&pcan_usb_pro,

	&pcan_usb_fd,

	&pcan_usb_pro_fd,

};



/*

drivers/net/can/usb/peak_usb/pcan_usb_core.h

+4 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
/* supported device ids. */

#define PCAN_USB_PRODUCT_ID		0x000c

#define PCAN_USBPRO_PRODUCT_ID		0x000d

#define PCAN_USBPROFD_PRODUCT_ID	0x0011

#define PCAN_USBFD_PRODUCT_ID		0x0012



#define PCAN_USB_DRIVER_NAME		"peak_usb"
@@ -86,6 +88,8 @@ struct peak_usb_adapter { 


extern const struct peak_usb_adapter pcan_usb;

extern const struct peak_usb_adapter pcan_usb_pro;

extern const struct peak_usb_adapter pcan_usb_fd;

extern const struct peak_usb_adapter pcan_usb_pro_fd;



struct peak_time_ref {

	struct timeval tv_host_0, tv_host;

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