|
|
@@ -1,101 +0,0 @@
|
|
|
-/*
|
|
|
- * 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 *data)
|
|
|
-{
|
|
|
- /* install interrupt handler */
|
|
|
- cpm_install_handler(irq, 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);
|
Jean Delvare