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yaml
---
r: 58826
b: refs/heads/master
c: e296fb7
h: refs/heads/master
v: v3
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Jean Delvare authored and Jean Delvare committed Jul 12, 2007
1 parent 858a804 commit 7bfd6b8
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Showing 2 changed files with 27 additions and 21 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: b9cdad74883a797952de52464d118d685cafc05a
refs/heads/master: e296fb7f301f3c3398adc6d991b097cfa73e1c0c
46 changes: 26 additions & 20 deletions trunk/drivers/i2c/chips/tsl2550.c
Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand Down Expand Up @@ -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;
}

/*
Expand Down Expand Up @@ -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);
Expand Down Expand Up @@ -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);

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