#include <linux/init.h>
#include <linux/wait.h>
#include <linux/i2c.h>
-#include <linux/i2c-dev.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/sections.h>
+#include <asm/pmac_low_i2c.h>
#include "windfarm.h"
-#define VERSION "0.1"
+#define VERSION "0.2"
#undef DEBUG
static int wf_lm75_detach(struct i2c_client *client);
static struct i2c_driver wf_lm75_driver = {
- .owner = THIS_MODULE,
- .name = "wf_lm75",
- .flags = I2C_DF_NOTIFY,
+ .driver = {
+ .name = "wf_lm75",
+ },
.attach_adapter = wf_lm75_attach,
.detach_client = wf_lm75_detach,
};
const char *loc)
{
struct wf_lm75_sensor *lm;
+ int rc;
DBG("wf_lm75: creating %s device at address 0x%02x\n",
ds1775 ? "ds1775" : "lm75", addr);
- lm = kmalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
+ lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
if (lm == NULL)
return NULL;
- memset(lm, 0, sizeof(struct wf_lm75_sensor));
/* Usual rant about sensor names not beeing very consistent in
* the device-tree, oh well ...
*/
if (!strcmp(loc, "Hard drive") || !strcmp(loc, "DRIVE BAY"))
lm->sens.name = "hd-temp";
+ else if (!strcmp(loc, "Incoming Air Temp"))
+ lm->sens.name = "incoming-air-temp";
+ else if (!strcmp(loc, "ODD Temp"))
+ lm->sens.name = "optical-drive-temp";
+ else if (!strcmp(loc, "HD Temp"))
+ lm->sens.name = "hard-drive-temp";
else
goto fail;
lm->i2c.driver = &wf_lm75_driver;
strncpy(lm->i2c.name, lm->sens.name, I2C_NAME_SIZE-1);
- if (i2c_attach_client(&lm->i2c)) {
- printk(KERN_ERR "windfarm: failed to attach %s %s to i2c\n",
- ds1775 ? "ds1775" : "lm75", lm->i2c.name);
+ rc = i2c_attach_client(&lm->i2c);
+ if (rc) {
+ printk(KERN_ERR "windfarm: failed to attach %s %s to i2c,"
+ " err %d\n", ds1775 ? "ds1775" : "lm75",
+ lm->i2c.name, rc);
goto fail;
}
static int wf_lm75_attach(struct i2c_adapter *adapter)
{
- u8 bus_id;
- struct device_node *smu, *bus, *dev;
-
- /* We currently only deal with LM75's hanging off the SMU
- * i2c busses. If we extend that driver to other/older
- * machines, we should split this function into SMU-i2c,
- * keywest-i2c, PMU-i2c, ...
- */
+ struct device_node *busnode, *dev;
+ struct pmac_i2c_bus *bus;
DBG("wf_lm75: adapter %s detected\n", adapter->name);
- if (strncmp(adapter->name, "smu-i2c-", 8) != 0)
- return 0;
- smu = of_find_node_by_type(NULL, "smu");
- if (smu == NULL)
- return 0;
-
- /* Look for the bus in the device-tree */
- bus_id = (u8)simple_strtoul(adapter->name + 8, NULL, 16);
-
- DBG("wf_lm75: bus ID is %x\n", bus_id);
-
- /* Look for sensors subdir */
- for (bus = NULL;
- (bus = of_get_next_child(smu, bus)) != NULL;) {
- u32 *reg;
-
- if (strcmp(bus->name, "i2c"))
- continue;
- reg = (u32 *)get_property(bus, "reg", NULL);
- if (reg == NULL)
- continue;
- if (bus_id == *reg)
- break;
- }
- of_node_put(smu);
- if (bus == NULL) {
- printk(KERN_WARNING "windfarm: SMU i2c bus 0x%x not found"
- " in device-tree !\n", bus_id);
- return 0;
- }
+ bus = pmac_i2c_adapter_to_bus(adapter);
+ if (bus == NULL)
+ return -ENODEV;
+ busnode = pmac_i2c_get_bus_node(bus);
DBG("wf_lm75: bus found, looking for device...\n");
/* Now look for lm75(s) in there */
for (dev = NULL;
- (dev = of_get_next_child(bus, dev)) != NULL;) {
+ (dev = of_get_next_child(busnode, dev)) != NULL;) {
const char *loc =
- get_property(dev, "hwsensor-location", NULL);
- u32 *reg = (u32 *)get_property(dev, "reg", NULL);
- DBG(" dev: %s... (loc: %p, reg: %p)\n", dev->name, loc, reg);
- if (loc == NULL || reg == NULL)
+ of_get_property(dev, "hwsensor-location", NULL);
+ u8 addr;
+
+ /* We must re-match the adapter in order to properly check
+ * the channel on multibus setups
+ */
+ if (!pmac_i2c_match_adapter(dev, adapter))
+ continue;
+ addr = pmac_i2c_get_dev_addr(dev);
+ if (loc == NULL || addr == 0)
continue;
/* real lm75 */
- if (device_is_compatible(dev, "lm75"))
- wf_lm75_create(adapter, *reg, 0, loc);
+ if (of_device_is_compatible(dev, "lm75"))
+ wf_lm75_create(adapter, addr, 0, loc);
/* ds1775 (compatible, better resolution */
- else if (device_is_compatible(dev, "ds1775"))
- wf_lm75_create(adapter, *reg, 1, loc);
+ else if (of_device_is_compatible(dev, "ds1775"))
+ wf_lm75_create(adapter, addr, 1, loc);
}
-
- of_node_put(bus);
-
return 0;
}
static int __init wf_lm75_sensor_init(void)
{
- int rc;
-
- rc = i2c_add_driver(&wf_lm75_driver);
- if (rc < 0)
- return rc;
- return 0;
+ /* Don't register on old machines that use therm_pm72 for now */
+ if (machine_is_compatible("PowerMac7,2") ||
+ machine_is_compatible("PowerMac7,3") ||
+ machine_is_compatible("RackMac3,1"))
+ return -ENODEV;
+ return i2c_add_driver(&wf_lm75_driver);
}
static void __exit wf_lm75_sensor_exit(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff