mirror of
https://github.com/torvalds/linux.git
synced 2024-12-12 22:23:55 +00:00
f0bb60e7b1
Files that don't use CONFIG_* stuff shouldn't include config.h Files that use CONFIG_* stuff should include config.h It's that simple. ;-) Signed-off-by: Alexey Dobriyan <adobriyan@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/*
|
|
* Embedded Planet RPX Lite MPC8xx CPM I2C interface.
|
|
* Copyright (c) 1999 Dan Malek (dmalek@jlc.net).
|
|
*
|
|
* moved into proper i2c interface;
|
|
* Brad Parker (brad@heeltoe.com)
|
|
*
|
|
* RPX lite specific parts of the i2c interface
|
|
* Update: There actually isn't anything RPXLite-specific about this module.
|
|
* This should work for most any 8xx board. The console messages have been
|
|
* changed to eliminate RPXLite references.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/i2c-algo-8xx.h>
|
|
#include <asm/mpc8xx.h>
|
|
#include <asm/commproc.h>
|
|
|
|
|
|
static void
|
|
rpx_iic_init(struct i2c_algo_8xx_data *data)
|
|
{
|
|
volatile cpm8xx_t *cp;
|
|
volatile immap_t *immap;
|
|
|
|
cp = cpmp; /* Get pointer to Communication Processor */
|
|
immap = (immap_t *)IMAP_ADDR; /* and to internal registers */
|
|
|
|
data->iip = (iic_t *)&cp->cp_dparam[PROFF_IIC];
|
|
|
|
/* Check for and use a microcode relocation patch.
|
|
*/
|
|
if ((data->reloc = data->iip->iic_rpbase))
|
|
data->iip = (iic_t *)&cp->cp_dpmem[data->iip->iic_rpbase];
|
|
|
|
data->i2c = (i2c8xx_t *)&(immap->im_i2c);
|
|
data->cp = cp;
|
|
|
|
/* Initialize Port B IIC pins.
|
|
*/
|
|
cp->cp_pbpar |= 0x00000030;
|
|
cp->cp_pbdir |= 0x00000030;
|
|
cp->cp_pbodr |= 0x00000030;
|
|
|
|
/* Allocate space for two transmit and two receive buffer
|
|
* descriptors in the DP ram.
|
|
*/
|
|
data->dp_addr = cpm_dpalloc(sizeof(cbd_t) * 4, 8);
|
|
|
|
/* ptr to i2c area */
|
|
data->i2c = (i2c8xx_t *)&(((immap_t *)IMAP_ADDR)->im_i2c);
|
|
}
|
|
|
|
static int rpx_install_isr(int irq, void (*func)(void *, void *), void *data)
|
|
{
|
|
/* install interrupt handler */
|
|
cpm_install_handler(irq, (void (*)(void *, struct pt_regs *)) func, data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_algo_8xx_data rpx_data = {
|
|
.setisr = rpx_install_isr
|
|
};
|
|
|
|
static struct i2c_adapter rpx_ops = {
|
|
.owner = THIS_MODULE,
|
|
.name = "m8xx",
|
|
.id = I2C_HW_MPC8XX_EPON,
|
|
.algo_data = &rpx_data,
|
|
};
|
|
|
|
int __init i2c_rpx_init(void)
|
|
{
|
|
printk(KERN_INFO "i2c-rpx: i2c MPC8xx driver\n");
|
|
|
|
/* reset hardware to sane state */
|
|
rpx_iic_init(&rpx_data);
|
|
|
|
if (i2c_8xx_add_bus(&rpx_ops) < 0) {
|
|
printk(KERN_ERR "i2c-rpx: Unable to register with I2C\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __exit i2c_rpx_exit(void)
|
|
{
|
|
i2c_8xx_del_bus(&rpx_ops);
|
|
}
|
|
|
|
MODULE_AUTHOR("Dan Malek <dmalek@jlc.net>");
|
|
MODULE_DESCRIPTION("I2C-Bus adapter routines for MPC8xx boards");
|
|
|
|
module_init(i2c_rpx_init);
|
|
module_exit(i2c_rpx_exit);
|