-/* pikronisa.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
- */
+/**************************************************************************/
+/* File: pimx1.c - MX1_DIS1 extension board for PiMX1 ARM based BCC */
+/* */
+/* 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. */
+/**************************************************************************/
#include "../include/can.h"
#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/sja1000p.h"
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)) && defined(CONFIG_GENERIC_HARDIRQS)
+#include <linux/irq.h>
+#endif /* <2.6.14 */
#include <asm/arch/hardware.h>
#include <asm/arch/imx-regs.h>
#define NR_82527 0
#define NR_SJA1000 1
-static can_spinlock_t pimx1_setup_hardware_lock=SPIN_LOCK_UNLOCKED;
+static CAN_DEFINE_SPINLOCK(pimx1_setup_hardware_lock);
int pimx1_setup_hardware(struct candevice_t *candev)
{
EIM_CS1U = 0x00000902;
EIM_CS1L = 0x82820903;
imx_gpio_mode(PA21_PF_A0);
+
+ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14))
/* Setup IRQ port as input */
+ imx_gpio_mode(GPIO_PORTB | GPIO_GIUS | GPIO_IN | GPIO_PUEN | 17);
+ /* Setup SJA1000 reset as output */
+ imx_gpio_mode(GPIO_PORTB | GPIO_GIUS | GPIO_OUT | GPIO_DR | 15);
+ #else /* <2.6.14 */
imx_gpio_mode(GPIO_PORTB | GPIO_IN | GPIO_PUEN | GPIO_GPIO | 17);
- /* Setup SJA1000 reset as ourput */
imx_gpio_mode(GPIO_PORTB | GPIO_OUT | GPIO_GPIO | 15);
+ #endif /* <2.6.14 */
+
DR(1) |= 1<<15;
can_spin_unlock_irqrestore(&pimx1_setup_hardware_lock,flags);
*
* The function pimx1_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.
*/
int pimx1_request_io(struct candevice_t *candev)
{
- int remap_addr;
+ can_ioptr_t remap_addr;
if(pimx1_setup_hardware(candev)<0){
CANMSG("PiMX1 board hardware setup failure\n");
return -ENODEV;
}
-
+
if (!can_request_mem_region(candev->io_addr,PIMX1_CAN_IO_RANGE,DEVICE_NAME " - pimx1")) {
CANMSG("Unable to request IO-memory: 0x%lx\n",candev->io_addr);
return -ENODEV;
return -ENODEV;
}
can_base_addr_fixup(candev, remap_addr);
- CANMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr, candev->io_addr + PIMX1_CAN_IO_RANGE - 1);
+ CANMSG("Registered IO-memory: 0x%lx - 0x%lx (VMA 0x%lx)\n",
+ candev->io_addr, candev->io_addr + PIMX1_CAN_IO_RANGE - 1, (long)remap_addr);
return 0;
}
* Return Value: The function does not return a value
* File: src/pikronisa.c
*/
-void pimx1_write_register(unsigned data, unsigned long address)
+void pimx1_write_register(unsigned data, can_ioptr_t address)
{
- /*DEBUGMSG("pimx1_write_register: addr=0x%lx data=0x%x",
+ /*DEBUGMSG("pimx1_write_register: addr=0x%lx data=0x%x\n",
address,data);*/
- writeb(data,address);
+ can_writeb(data,address);
}
/**
* Return Value: The function returns the value stored in @address
* File: src/pikronisa.c
*/
-unsigned pimx1_read_register(unsigned long address)
+unsigned pimx1_read_register(can_ioptr_t address)
{
- return readb(address);
+ return can_readb(address);
}
/**
* pimx1_reset - hardware reset routine
* @candev: Pointer to candevice/board structure
*
- * The function pimx1_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 pimx1_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/pikronisa.c
int i;
struct canchip_t *chip=candev->chip[0];
unsigned cdr;
-
+
pimx1_write_register(sjaMOD_RM, chip->chip_base_addr+SJAMOD);
udelay(1000);
-
+
cdr=pimx1_read_register(chip->chip_base_addr+SJACDR);
pimx1_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR);
pimx1_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR);
pimx1_write_register(0, chip->chip_base_addr+SJAIER);
-
+
return 0;
}
* Return Value: The function always returns zero
* File: src/pikronisa.c
*/
-int pimx1_init_hw_data(struct candevice_t *candev)
+int pimx1_init_hw_data(struct candevice_t *candev)
{
candev->res_addr=PIMX1_CAN_RESET_ADDR;
candev->io_addr=PIMX1_CAN_IO_ADDRESS;
* 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.
* pimx1_program_irq - program interrupts
* @candev: Pointer to candevice/board structure
*
- * The function pimx1_program_irq() is used for hardware that uses
+ * The function pimx1_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/pikronisa.c
projects / lincan.git / blobdiff