-/* bfadcan.c
- * Linux CAN-bus device driver.
- * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
- * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
- * email:pisa@cmp.felk.cvut.cz
- * This software is released under the GPL-License.
- * Version lincan-0.3 17 Jun 2004
- */
-
-/* This file is intended as a bfadcan file for currently unsupported hardware.
- * Once you've changed/added the functions specific to your hardware it is
- * possible to load the driver with the hardware option hw=bfadcan.
- */
-
+/**************************************************************************/
+/* File: bfadcan.c - support for BFAD can boards */
+/* */
+/* LinCAN - (Not only) Linux CAN bus driver */
+/* Copyright (C) 2002-2009 DCE FEE CTU Prague <http://dce.felk.cvut.cz> */
+/* Copyright (C) 2002-2009 Pavel Pisa <pisa@cmp.felk.cvut.cz> */
+/* Funded by OCERA and FRESCOR IST projects */
+/* Based on CAN driver code by Arnaud Westenberg <arnaud@wanadoo.nl> */
+/* */
+/* LinCAN is free software; you can redistribute it and/or modify it */
+/* under terms of the GNU General Public License as published by the */
+/* Free Software Foundation; either version 2, or (at your option) any */
+/* later version. LinCAN 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 LinCAN; see file */
+/* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
+/* Cambridge, MA 02139, USA. */
+/* */
+/* To allow use of LinCAN in the compact embedded systems firmware */
+/* and RT-executives (RTEMS for example), main authors agree with next */
+/* special exception: */
+/* */
+/* Including LinCAN header files in a file, instantiating LinCAN generics */
+/* or templates, or linking other files with LinCAN objects to produce */
+/* an application image/executable, does not by itself cause the */
+/* resulting application image/executable to be covered by */
+/* the GNU General Public License. */
+/* This exception does not however invalidate any other reasons */
+/* why the executable file might be covered by the GNU Public License. */
+/* Publication of enhanced or derived LinCAN files is required although. */
+/**************************************************************************/
#define WINDOWED_ACCESS
*
* The function bfadcan_request_io() is used to reserve the io-memory. If your
* hardware uses a dedicated memory range as hardware control registers you
- * will have to add the code to reserve this memory as well.
+ * will have to add the code to reserve this memory as well.
* %IO_RANGE is the io-memory range that gets reserved, please adjust according
* your hardware. Example: #define IO_RANGE 0x100 for i82527 chips or
* #define IO_RANGE 0x20 for sja1000 chips in basic CAN mode.
* bfadcan_reset - hardware reset routine
* @candev: Pointer to candevice/board structure
*
- * The function bfadcan_reset() is used to give a hardware reset. This is
- * rather hardware specific so I haven't included example code. Don't forget to
+ * The function bfadcan_reset() is used to give a hardware reset. This is
+ * rather hardware specific so I haven't included example code. Don't forget to
* check the reset status of the chip before returning.
* Return Value: The function returns zero on success or %-ENODEV on failure
* File: src/bfadcan.c
int i;
struct canchip_t *chip=candev->chip[0];
unsigned cdr;
-
+
bfadcan_write_register(sjaMOD_RM, chip->chip_base_addr+SJAMOD);
udelay(1000);
-
+
cdr=bfadcan_read_register(chip->chip_base_addr+SJACDR);
bfadcan_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR);
bfadcan_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR);
bfadcan_write_register(0, chip->chip_base_addr+SJAIER);
-
+
return 0;
}
* Return Value: The function always returns zero
* File: src/bfadcan.c
*/
-int bfadcan_init_hw_data(struct candevice_t *candev)
+int bfadcan_init_hw_data(struct candevice_t *candev)
{
candev->res_addr=RESET_ADDR;
candev->nr_82527_chips=NR_82527;
* The entry @int_clk_reg holds hardware specific options for the Clock Out
* register. Options defined in the %i82527.h file:
* %iCLK_CD0, %iCLK_CD1, %iCLK_CD2, %iCLK_CD3, %iCLK_SL0, %iCLK_SL1.
- * The entry @int_bus_reg holds hardware specific options for the Bus
+ * The entry @int_bus_reg holds hardware specific options for the Bus
* Configuration register. Options defined in the %i82527.h file:
* %iBUS_DR0, %iBUS_DR1, %iBUS_DT1, %iBUS_POL, %iBUS_CBY.
* The entry @int_cpu_reg holds hardware specific options for the cpu interface
* CAN chip. In case of the sja1000 there's only one message object but on the
* i82527 chip there are 15.
* The code below is for a i82527 chip and initializes the object base addresses
- * The entry @obj_base_addr represents the first memory address of the message
+ * The entry @obj_base_addr represents the first memory address of the message
* object. In case of the sja1000 @obj_base_addr is taken the same as the chips
* base address.
* Unless the hardware uses a segmented memory map, flags can be set zero.
int bfadcan_init_obj_data(struct canchip_t *chip, int objnr)
{
chip->msgobj[objnr]->obj_base_addr=chip->chip_base_addr+(objnr+1)*0x10;
-
+
return 0;
}
* bfadcan_program_irq - program interrupts
* @candev: Pointer to candevice/board structure
*
- * The function bfadcan_program_irq() is used for hardware that uses
+ * The function bfadcan_program_irq() is used for hardware that uses
* programmable interrupts. If your hardware doesn't use programmable interrupts
- * you should not set the @candevices_t->flags entry to %CANDEV_PROGRAMMABLE_IRQ and
- * leave this function unedited. Again this function is hardware specific so
+ * you should not set the @candevices_t->flags entry to %CANDEV_PROGRAMMABLE_IRQ and
+ * leave this function unedited. Again this function is hardware specific so
* there's no example code.
* Return value: The function returns zero on success or %-ENODEV on failure
* File: src/bfadcan.c
projects / lincan.git / blobdiff