This patch introduces driver for Rohm BH1770GLC and Osram SFH7770 combined ambient light and proximity sensor. Driver is divided to 3 parts. Core-part contains common functionality for both parts of the chips. ALS and PS specific functionalities are in separate files. ALS part is fully based on threshold interrupts. Driver doesn't provide direct control for threshold levels. Instead, based on sensitivity setting, threshold levels are updated after every interrupt. This method keeps sensor to follow changes in the lightning. PS part uses interrupt for high threshold events and delayed work to simulate missing low threshold interrupts. This way driver is able to react proximity on / off events using only high threshold interrupt. Proximity sensing can utilize up to 3 IR leds for movement detection. Driver supports 1-3 leds configurations. Platform data is used to provide IR led configuration: number of channels and absolute maximum operating currents for the leds. Chip is kept running only when someone keeps device handles open. Otherwise chip is powered down and optionally power supplies are turned off. Interfaces: Both parts of the driver provides results via separate misc char device. sysfs interface: als_calib - (RW) calibration coeffient (default is neutral value) als_mode - (R) returns current chip operational state for ALS als_rate - (RW) ALS side measurement rate in ms als_sens - (RW) sensitivity for changes in lightning level ps_calib - (RW) calibration coeffient ps_leds - (RW) IR led currents in mA ps_mode - (R) returns current chip operational state for PS ps_rate - (RW) PS side measurement rates (separate rates for below / above threshold condition) ps_threshold - (RW) threshold levels chip_id - (R) chip version and revision information Tested in top of 2.6.32 kernel. Applies to 2.6.34-RC3. Samu Onkalo (1): misc: bh1770glc: Driver for bh1770glc combined als and ps sensor drivers/misc/Kconfig | 12 + drivers/misc/Makefile | 3 + drivers/misc/bh1770glc.h | 169 ++++++++++++ drivers/misc/bh1770glc_als.c | 424 +++++++++++++++++++++++++++++ drivers/misc/bh1770glc_core.c | 301 +++++++++++++++++++++ drivers/misc/bh1770glc_ps.c | 585 +++++++++++++++++++++++++++++++++++++++++ include/linux/bh1770glc.h | 39 +++ 7 files changed, 1533 insertions(+), 0 deletions(-) create mode 100644 drivers/misc/bh1770glc.h create mode 100644 drivers/misc/bh1770glc_als.c create mode 100644 drivers/misc/bh1770glc_core.c create mode 100644 drivers/misc/bh1770glc_ps.c create mode 100644 include/linux/bh1770glc.h -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
