#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/hwmon-sysfs.h>
-#include <linux/i2c-sensor.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = {0x74, 0x75, 0x76, 0x77, I2C_CLIENT_END};
-static unsigned int normal_isa[] = {I2C_CLIENT_ISA_END};
/* Insmod parameters */
-SENSORS_INSMOD_1(pca9539);
+I2C_CLIENT_INSMOD_1(pca9539);
enum pca9539_cmd
{
/* This is the driver that will be inserted */
static struct i2c_driver pca9539_driver = {
- .owner = THIS_MODULE,
- .name = "pca9539",
- .flags = I2C_DF_NOTIFY,
+ .driver = {
+ .name = "pca9539",
+ },
.attach_adapter = pca9539_attach_adapter,
.detach_client = pca9539_detach_client,
};
static int pca9539_attach_adapter(struct i2c_adapter *adapter)
{
- return i2c_detect(adapter, &addr_data, pca9539_detect);
+ return i2c_probe(adapter, &addr_data, pca9539_detect);
}
-/* This function is called by i2c_detect */
+/* This function is called by i2c_probe */
static int pca9539_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *new_client;
/* OK. For now, we presume we have a valid client. We now create the
client structure, even though we cannot fill it completely yet. */
- if (!(data = kmalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
+ if (!(data = kzalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
- memset(data, 0, sizeof(struct pca9539_data));
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->driver = &pca9539_driver;
new_client->flags = 0;
- /* Detection: the pca9539 only has 8 registers (0-7).
- A read of 7 should succeed, but a read of 8 should fail. */
- if ((i2c_smbus_read_byte_data(new_client, 7) < 0) ||
- (i2c_smbus_read_byte_data(new_client, 8) >= 0))
- goto exit_kfree;
+ if (kind < 0) {
+ /* Detection: the pca9539 only has 8 registers (0-7).
+ A read of 7 should succeed, but a read of 8 should fail. */
+ if ((i2c_smbus_read_byte_data(new_client, 7) < 0) ||
+ (i2c_smbus_read_byte_data(new_client, 8) >= 0))
+ goto exit_kfree;
+ }
strlcpy(new_client->name, "pca9539", I2C_NAME_SIZE);
if ((err = i2c_attach_client(new_client)))
goto exit_kfree;
- /* Register sysfs hooks (don't care about failure) */
- sysfs_create_group(&new_client->dev.kobj, &pca9539_defattr_group);
+ /* Register sysfs hooks */
+ err = sysfs_create_group(&new_client->dev.kobj,
+ &pca9539_defattr_group);
+ if (err)
+ goto exit_detach;
return 0;
+exit_detach:
+ i2c_detach_client(new_client);
exit_kfree:
kfree(data);
exit:
{
int err;
- if ((err = i2c_detach_client(client))) {
- dev_err(&client->dev, "Client deregistration failed.\n");
+ sysfs_remove_group(&client->dev.kobj, &pca9539_defattr_group);
+
+ if ((err = i2c_detach_client(client)))
return err;
- }
kfree(i2c_get_clientdata(client));
return 0;