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Diffstat (limited to 'drivers/sbus/char/envctrl.c')
-rw-r--r--drivers/sbus/char/envctrl.c147
1 files changed, 79 insertions, 68 deletions
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index a408402426f8..58e583b61e60 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -1,5 +1,4 @@
-/* $Id: envctrl.c,v 1.25 2002/01/15 09:01:26 davem Exp $
- * envctrl.c: Temperature and Fan monitoring on Machines providing it.
+/* envctrl.c: Temperature and Fan monitoring on Machines providing it.
*
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 2000 Vinh Truong (vinh.truong@eng.sun.com)
@@ -28,12 +27,16 @@
#include <linux/kmod.h>
#include <linux/reboot.h>
#include <linux/smp_lock.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
-#include <asm/ebus.h>
#include <asm/uaccess.h>
#include <asm/envctrl.h>
#include <asm/io.h>
+#define DRIVER_NAME "envctrl"
+#define PFX DRIVER_NAME ": "
+
#define ENVCTRL_MINOR 162
#define PCF8584_ADDRESS 0x55
@@ -193,7 +196,7 @@ static void envtrl_i2c_test_pin(void)
}
if (limit <= 0)
- printk(KERN_INFO "envctrl: Pin status will not clear.\n");
+ printk(KERN_INFO PFX "Pin status will not clear.\n");
}
/* Function Description: Test busy bit.
@@ -211,7 +214,7 @@ static void envctrl_i2c_test_bb(void)
}
if (limit <= 0)
- printk(KERN_INFO "envctrl: Busy bit will not clear.\n");
+ printk(KERN_INFO PFX "Busy bit will not clear.\n");
}
/* Function Description: Send the address for a read access.
@@ -858,11 +861,10 @@ static void envctrl_init_voltage_status(struct i2c_child_t *pchild)
/* Function Description: Initialize i2c child device.
* Return: None.
*/
-static void envctrl_init_i2c_child(struct linux_ebus_child *edev_child,
+static void envctrl_init_i2c_child(struct device_node *dp,
struct i2c_child_t *pchild)
{
int len, i, tbls_size = 0;
- struct device_node *dp = edev_child->prom_node;
const void *pval;
/* Get device address. */
@@ -882,12 +884,12 @@ static void envctrl_init_i2c_child(struct linux_ebus_child *edev_child,
pchild->tables = kmalloc(tbls_size, GFP_KERNEL);
if (pchild->tables == NULL){
- printk("envctrl: Failed to allocate table.\n");
+ printk(KERN_ERR PFX "Failed to allocate table.\n");
return;
}
pval = of_get_property(dp, "tables", &len);
if (!pval || len <= 0) {
- printk("envctrl: Failed to get table.\n");
+ printk(KERN_ERR PFX "Failed to get table.\n");
return;
}
memcpy(pchild->tables, pval, len);
@@ -993,14 +995,14 @@ static int kenvctrld(void *__unused)
struct i2c_child_t *cputemp;
if (NULL == (cputemp = envctrl_get_i2c_child(ENVCTRL_CPUTEMP_MON))) {
- printk(KERN_ERR
- "envctrl: kenvctrld unable to monitor CPU temp-- exiting\n");
+ printk(KERN_ERR PFX
+ "kenvctrld unable to monitor CPU temp-- exiting\n");
return -ENODEV;
}
poll_interval = 5000; /* TODO env_mon_interval */
- printk(KERN_INFO "envctrl: %s starting...\n", current->comm);
+ printk(KERN_INFO PFX "%s starting...\n", current->comm);
for (;;) {
msleep_interruptible(poll_interval);
@@ -1022,54 +1024,35 @@ static int kenvctrld(void *__unused)
}
}
}
- printk(KERN_INFO "envctrl: %s exiting...\n", current->comm);
+ printk(KERN_INFO PFX "%s exiting...\n", current->comm);
return 0;
}
-static int __init envctrl_init(void)
+static int __devinit envctrl_probe(struct of_device *op,
+ const struct of_device_id *match)
{
- struct linux_ebus *ebus = NULL;
- struct linux_ebus_device *edev = NULL;
- struct linux_ebus_child *edev_child = NULL;
- int err, i = 0;
-
- for_each_ebus(ebus) {
- for_each_ebusdev(edev, ebus) {
- if (!strcmp(edev->prom_node->name, "bbc")) {
- /* If we find a boot-bus controller node,
- * then this envctrl driver is not for us.
- */
- return -ENODEV;
- }
- }
- }
+ struct device_node *dp;
+ int index, err;
- /* Traverse through ebus and ebus device list for i2c device and
- * adc and gpio nodes.
- */
- for_each_ebus(ebus) {
- for_each_ebusdev(edev, ebus) {
- if (!strcmp(edev->prom_node->name, "i2c")) {
- i2c = ioremap(edev->resource[0].start, 0x2);
- for_each_edevchild(edev, edev_child) {
- if (!strcmp("gpio", edev_child->prom_node->name)) {
- i2c_childlist[i].i2ctype = I2C_GPIO;
- envctrl_init_i2c_child(edev_child, &(i2c_childlist[i++]));
- }
- if (!strcmp("adc", edev_child->prom_node->name)) {
- i2c_childlist[i].i2ctype = I2C_ADC;
- envctrl_init_i2c_child(edev_child, &(i2c_childlist[i++]));
- }
- }
- goto done;
- }
+ if (i2c)
+ return -EINVAL;
+
+ i2c = of_ioremap(&op->resource[0], 0, 0x2, DRIVER_NAME);
+ if (!i2c)
+ return -ENOMEM;
+
+ index = 0;
+ dp = op->node->child;
+ while (dp) {
+ if (!strcmp(dp->name, "gpio")) {
+ i2c_childlist[index].i2ctype = I2C_GPIO;
+ envctrl_init_i2c_child(dp, &(i2c_childlist[index++]));
+ } else if (!strcmp(dp->name, "adc")) {
+ i2c_childlist[index].i2ctype = I2C_ADC;
+ envctrl_init_i2c_child(dp, &(i2c_childlist[index++]));
}
- }
-done:
- if (!edev) {
- printk("envctrl: I2C device not found.\n");
- return -ENODEV;
+ dp = dp->sibling;
}
/* Set device address. */
@@ -1087,7 +1070,7 @@ done:
/* Register the device as a minor miscellaneous device. */
err = misc_register(&envctrl_dev);
if (err) {
- printk("envctrl: Unable to get misc minor %d\n",
+ printk(KERN_ERR PFX "Unable to get misc minor %d\n",
envctrl_dev.minor);
goto out_iounmap;
}
@@ -1096,12 +1079,12 @@ done:
* a next child device, so we decrement before reverse-traversal of
* child devices.
*/
- printk("envctrl: initialized ");
- for (--i; i >= 0; --i) {
+ printk(KERN_INFO PFX "Initialized ");
+ for (--index; index >= 0; --index) {
printk("[%s 0x%lx]%s",
- (I2C_ADC == i2c_childlist[i].i2ctype) ? ("adc") :
- ((I2C_GPIO == i2c_childlist[i].i2ctype) ? ("gpio") : ("unknown")),
- i2c_childlist[i].addr, (0 == i) ? ("\n") : (" "));
+ (I2C_ADC == i2c_childlist[index].i2ctype) ? "adc" :
+ ((I2C_GPIO == i2c_childlist[index].i2ctype) ? "gpio" : "unknown"),
+ i2c_childlist[index].addr, (0 == index) ? "\n" : " ");
}
kenvctrld_task = kthread_run(kenvctrld, NULL, "kenvctrld");
@@ -1115,26 +1098,54 @@ done:
out_deregister:
misc_deregister(&envctrl_dev);
out_iounmap:
- iounmap(i2c);
- for (i = 0; i < ENVCTRL_MAX_CPU * 2; i++)
- kfree(i2c_childlist[i].tables);
+ of_iounmap(&op->resource[0], i2c, 0x2);
+ for (index = 0; index < ENVCTRL_MAX_CPU * 2; index++)
+ kfree(i2c_childlist[index].tables);
return err;
}
-static void __exit envctrl_cleanup(void)
+static int __devexit envctrl_remove(struct of_device *op)
{
- int i;
+ int index;
kthread_stop(kenvctrld_task);
- iounmap(i2c);
+ of_iounmap(&op->resource[0], i2c, 0x2);
misc_deregister(&envctrl_dev);
- for (i = 0; i < ENVCTRL_MAX_CPU * 2; i++)
- kfree(i2c_childlist[i].tables);
+ for (index = 0; index < ENVCTRL_MAX_CPU * 2; index++)
+ kfree(i2c_childlist[index].tables);
+
+ return 0;
+}
+
+static const struct of_device_id envctrl_match[] = {
+ {
+ .name = "i2c",
+ .compatible = "i2cpcf,8584",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, envctrl_match);
+
+static struct of_platform_driver envctrl_driver = {
+ .name = DRIVER_NAME,
+ .match_table = envctrl_match,
+ .probe = envctrl_probe,
+ .remove = __devexit_p(envctrl_remove),
+};
+
+static int __init envctrl_init(void)
+{
+ return of_register_driver(&envctrl_driver, &of_bus_type);
+}
+
+static void __exit envctrl_exit(void)
+{
+ of_unregister_driver(&envctrl_driver);
}
module_init(envctrl_init);
-module_exit(envctrl_cleanup);
+module_exit(envctrl_exit);
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 19:41:30 +0100