Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-rpx.c b/drivers/i2c/busses/i2c-rpx.c
new file mode 100644
index 000000000000..9497b1b6852f
--- /dev/null
+++ b/drivers/i2c/busses/i2c-rpx.c
@@ -0,0 +1,102 @@
+/*
+ * 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/config.h>
+#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);