aboutsummaryrefslogtreecommitdiff
path: root/drivers/macintosh
diff options
context:
space:
mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-04-18 22:16:45 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-04-30 15:37:18 +1000
commit22b6d2ea355449fc2a9a4dc5c346615af86b876e (patch)
treed622b6d8ce1323ac5e1c298070c312baccfd6a32 /drivers/macintosh
parent5400480f5411aab31939747371c6690a02ee7780 (diff)
downloadlinux-22b6d2ea355449fc2a9a4dc5c346615af86b876e.tar.gz
powerpc/pmac: Convert windfarm_max6690 to new i2c probing
This simplifies the driver to stop using the deprecated attach interface Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/windfarm_max6690_sensor.c100
1 files changed, 21 insertions, 79 deletions
diff --git a/drivers/macintosh/windfarm_max6690_sensor.c b/drivers/macintosh/windfarm_max6690_sensor.c
index 8204113268f..f4902f4cf8c 100644
--- a/drivers/macintosh/windfarm_max6690_sensor.c
+++ b/drivers/macintosh/windfarm_max6690_sensor.c
@@ -16,7 +16,7 @@
#include "windfarm.h"
-#define VERSION "0.2"
+#define VERSION "1.0"
/* This currently only exports the external temperature sensor,
since that's all the control loops need. */
@@ -64,9 +64,25 @@ static struct wf_sensor_ops wf_max6690_ops = {
static int wf_max6690_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ const char *name, *loc;
struct wf_6690_sensor *max;
int rc;
+ loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL);
+ if (!loc) {
+ dev_warn(&client->dev, "Missing hwsensor-location property!\n");
+ return -ENXIO;
+ }
+
+ if (!strcmp(loc, "BACKSIDE"))
+ name = "backside-temp";
+ else if (!strcmp(loc, "NB Ambient"))
+ name = "north-bridge-temp";
+ else if (!strcmp(loc, "GPU Ambient"))
+ name = "gpu-temp";
+ else
+ return -ENXIO;
+
max = kzalloc(sizeof(struct wf_6690_sensor), GFP_KERNEL);
if (max == NULL) {
printk(KERN_ERR "windfarm: Couldn't create MAX6690 sensor: "
@@ -75,90 +91,16 @@ static int wf_max6690_probe(struct i2c_client *client,
}
max->i2c = client;
- max->sens.name = client->dev.platform_data;
+ max->sens.name = (char *)name; /* XXX fix constness in structure */
max->sens.ops = &wf_max6690_ops;
i2c_set_clientdata(client, max);
rc = wf_register_sensor(&max->sens);
- if (rc) {
+ if (rc)
kfree(max);
- }
-
return rc;
}
-static struct i2c_driver wf_max6690_driver;
-
-static struct i2c_client *wf_max6690_create(struct i2c_adapter *adapter,
- u8 addr, const char *loc)
-{
- struct i2c_board_info info;
- struct i2c_client *client;
- char *name;
-
- if (!strcmp(loc, "BACKSIDE"))
- name = "backside-temp";
- else if (!strcmp(loc, "NB Ambient"))
- name = "north-bridge-temp";
- else if (!strcmp(loc, "GPU Ambient"))
- name = "gpu-temp";
- else
- goto fail;
-
- memset(&info, 0, sizeof(struct i2c_board_info));
- info.addr = addr >> 1;
- info.platform_data = name;
- strlcpy(info.type, "wf_max6690", I2C_NAME_SIZE);
-
- client = i2c_new_device(adapter, &info);
- if (client == NULL) {
- printk(KERN_ERR "windfarm: failed to attach MAX6690 sensor\n");
- goto fail;
- }
-
- /*
- * Let i2c-core delete that device on driver removal.
- * This is safe because i2c-core holds the core_lock mutex for us.
- */
- list_add_tail(&client->detected, &wf_max6690_driver.clients);
- return client;
-
- fail:
- return NULL;
-}
-
-static int wf_max6690_attach(struct i2c_adapter *adapter)
-{
- struct device_node *busnode, *dev = NULL;
- struct pmac_i2c_bus *bus;
- const char *loc;
-
- bus = pmac_i2c_adapter_to_bus(adapter);
- if (bus == NULL)
- return -ENODEV;
- busnode = pmac_i2c_get_bus_node(bus);
-
- while ((dev = of_get_next_child(busnode, dev)) != 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;
- if (!of_device_is_compatible(dev, "max6690"))
- continue;
- addr = pmac_i2c_get_dev_addr(dev);
- loc = of_get_property(dev, "hwsensor-location", NULL);
- if (loc == NULL || addr == 0)
- continue;
- printk("found max6690, loc=%s addr=0x%02x\n", loc, addr);
- wf_max6690_create(adapter, addr, loc);
- }
-
- return 0;
-}
-
static int wf_max6690_remove(struct i2c_client *client)
{
struct wf_6690_sensor *max = i2c_get_clientdata(client);
@@ -170,15 +112,15 @@ static int wf_max6690_remove(struct i2c_client *client)
}
static const struct i2c_device_id wf_max6690_id[] = {
- { "wf_max6690", 0 },
+ { "MAC,max6690", 0 },
{ }
};
+MODULE_DEVICE_TABLE(i2c, wf_max6690_id);
static struct i2c_driver wf_max6690_driver = {
.driver = {
.name = "wf_max6690",
},
- .attach_adapter = wf_max6690_attach,
.probe = wf_max6690_probe,
.remove = wf_max6690_remove,
.id_table = wf_max6690_id,