aboutsummaryrefslogtreecommitdiff
path: root/drivers/i2c/chips/tsl2550.c
AgeCommit message (Collapse)Author
2009-07-28i2c/tsl2550: Fix lux value in dark environmentMichele Jr De Candia
I've tested TSL2550 driver and I've found a bug: when light is off, returned value from tsl2550_calculate_lux function is -1 when it should be 0 (sensor correctly read that light was off). I think the bug is that a zero c0 value (approximated value of ch0) is misinterpreted as an error. Signed-off-by: Michele Jr De Candia <michele.decandia@valueteam.com> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-29i2c: Convert most new-style drivers to use module aliasingJean Delvare
Based on earlier work by Jon Smirl and Jochen Friedrich. Update most new-style i2c drivers to use standard module aliasing instead of the old driver_name/type driver matching scheme. I've left the video drivers apart (except for SoC camera drivers) as they're a bit more diffcult to deal with, they'll have their own patch later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Jon Smirl <jonsmirl@gmail.com> Cc: Jochen Friedrich <jochen@scram.de>
2008-04-29i2c: Add support for device alias namesJean Delvare
Based on earlier work by Jon Smirl and Jochen Friedrich. This patch allows new-style i2c chip drivers to have alias names using the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this point, the old i2c driver binding scheme (driver_name/type) is still supported. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Jochen Friedrich <jochen@scram.de> Cc: Jon Smirl <jonsmirl@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org>
2008-01-27i2c/tsl2550: Add power management addedRodolfo Giometti
Signed-off-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-12i2c/tsl2550: Speed up initializationJean Delvare
There's some redundancy in the tsl2550 initialization sequence. It is powering up the device twice, and setting the operating mode twice too. Setting things just once saves SMBus transactions, which aren't always cheap, speeding up the device initialization. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Rodolfo Giometti <giometti@linux.it>
2007-07-12i2c: Add support for the TSL2550Rodolfo Giometti
Add support for Taos TSL2550 ambient light sensors. (http://www.taosinc.com/product_detail.asp?cateid=4&proid=18). Signed-off-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>