From 8d923921f9ae2a1bc20ce37a2abcc2dbce16188e Mon Sep 17 00:00:00 2001 From: Brian Masney Date: Sat, 3 Mar 2018 20:49:41 -0500 Subject: staging: iio: tsl2x7x: remove unnecessary sysfs attribute The tsl2771 and tmd2771 devices create the in_proximity0_calibscale_available sysfs attribute. These two particular devices do not support changing the proximity gain value on the chip so this patch removes that sysfs attribute. As expected, these two devices already did not create the IIO_CHAN_INFO_CALIBSCALE channel and proximity0_calibrate sysfs attribute. Page 38 of the tsl2772 data sheet shows that the proximity gain can be adjusted with bits 2-3 on the control register: https://ams.com/eng/content/download/291503/1066377/file/TSL2772_DS000181_2-00.pdf Page 35 of the tsl2771 and tmd2771 data sheets shows that bits 2-3 on the control register are reserved and changing the proximity gain is not supported: https://ams.com/eng/content/download/250264/976045/file/TSL2771_DS000105_3-00.pdf https://ams.com/eng/content/download/250283/976077/file/TMD2771_DS000177_2-00.pdf Signed-off-by: Brian Masney Signed-off-by: Jonathan Cameron --- drivers/staging/iio/light/tsl2x7x.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c index da7a4e025083..c2b08a5d5b0e 100644 --- a/drivers/staging/iio/light/tsl2x7x.c +++ b/drivers/staging/iio/light/tsl2x7x.c @@ -1475,7 +1475,6 @@ static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = { &dev_attr_in_illuminance0_target_input.attr, &dev_attr_in_illuminance0_calibrate.attr, &dev_attr_in_illuminance0_lux_table.attr, - &iio_const_attr_in_proximity0_calibscale_available.dev_attr.attr, NULL }; -- cgit v1.2.3