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path: root/drivers/i2c/chips/tsl2550.c
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Diffstat (limited to 'drivers/i2c/chips/tsl2550.c')
-rw-r--r--drivers/i2c/chips/tsl2550.c46
1 files changed, 26 insertions, 20 deletions
diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/i2c/chips/tsl2550.c
index ef80330b855f..3de4b19ba08f 100644
--- a/drivers/i2c/chips/tsl2550.c
+++ b/drivers/i2c/chips/tsl2550.c
@@ -27,7 +27,7 @@
#include <linux/delay.h>
#define TSL2550_DRV_NAME "tsl2550"
-#define DRIVER_VERSION "1.1.0"
+#define DRIVER_VERSION "1.1.1"
/*
* Defines
@@ -333,13 +333,30 @@ static const struct attribute_group tsl2550_attr_group = {
* Initialization function
*/
-static void tsl2550_init_client(struct i2c_client *client)
+static int tsl2550_init_client(struct i2c_client *client)
{
struct tsl2550_data *data = i2c_get_clientdata(client);
+ int err;
- /* Power up the device and set the default operating mode */
- tsl2550_set_power_state(client, 1);
- tsl2550_set_operating_mode(client, data->operating_mode);
+ /*
+ * Probe the chip. To do so we try to power up the device and then to
+ * read back the 0x03 code
+ */
+ err = i2c_smbus_write_byte(client, TSL2550_POWER_UP);
+ if (err < 0)
+ return err;
+ mdelay(1);
+ if (i2c_smbus_read_byte(client) != TSL2550_POWER_UP)
+ return -ENODEV;
+ data->power_state = 1;
+
+ /* Set the default operating mode */
+ err = i2c_smbus_write_byte(client,
+ TSL2550_MODE_RANGE[data->operating_mode]);
+ if (err < 0)
+ return err;
+
+ return 0;
}
/*
@@ -381,24 +398,12 @@ static int __devinit tsl2550_probe(struct i2c_client *client)
dev_info(&client->dev, "%s operating mode\n",
data->operating_mode ? "extended" : "standard");
- /*
- * Probe the chip. To do so we try to power up the device and then to
- * read back the 0x03 code
- */
- err = i2c_smbus_write_byte(client, TSL2550_POWER_UP);
- if (err < 0)
- goto exit_kfree;
- mdelay(1);
- err = i2c_smbus_read_byte(client);
- if (err != TSL2550_POWER_UP) {
- err = -ENODEV;
- goto exit_kfree;
- }
-
mutex_init(&data->update_lock);
/* Initialize the TSL2550 chip */
- tsl2550_init_client(client);
+ err = tsl2550_init_client(client);
+ if (err)
+ goto exit_kfree;
/* Register sysfs hooks */
err = sysfs_create_group(&client->dev.kobj, &tsl2550_attr_group);
@@ -449,6 +454,7 @@ static void __exit tsl2550_exit(void)
MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
MODULE_DESCRIPTION("TSL2550 ambient light sensor driver");
MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
module_init(tsl2550_init);
module_exit(tsl2550_exit);