diff options
| author | Krishna Yarlagadda <kyarlagadda@nvidia.com> | 2011-07-01 15:16:34 +0530 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-07-11 13:39:58 -0700 |
| commit | 85f6bcb9497b52a1f1b58e6d30ac0387fbfdeaee (patch) | |
| tree | 3bbd07315c6becf4c9e3d92ac1064cfb05d5f525 /drivers | |
| parent | 20911272cb6d0a9a3e4c1c9d4ad7e50e28258901 (diff) | |
isl29028: Convert als data to lux units
Convert als data units from count to lux before reporting
Bug 845207
Change-Id: I52292b509536b128339a103ce5afe2405c39cea0
Reviewed-on: http://git-master/r/39501
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Diffstat (limited to 'drivers')
| -rwxr-xr-x | drivers/staging/iio/light/isl29028.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c index 49caa612482a..ea7c284b219b 100755 --- a/drivers/staging/iio/light/isl29028.c +++ b/drivers/staging/iio/light/isl29028.c @@ -51,6 +51,8 @@ #define CONFIGURE_ALS_RANGE_LOW_LUX 0 #define CONFIGURE_ALS_RANGE_HIGH_LUX 1 +#define CONFIGURE_ALS_RANGE_SH 1 +#define CONFIGURE_ALS_RANGE_MASK (1 << CONFIGURE_ALS_RANGE_SH) #define CONFIGURE_ALS_IR_MODE_MASK 1 #define CONFIGURE_ALS_IR_MODE_SH 0 @@ -311,6 +313,12 @@ static bool isl29018_set_als_ir_mode(struct i2c_client *client, bool is_enable, CONFIGURE_ALS_IR_MODE_MASK, CONFIGURE_ALS_IR_MODE_SH); if (st) + st = isl29028_write_data(client, + ISL29028_REG_ADD_CONFIGURE, + CONFIGURE_ALS_RANGE_HIGH_LUX, + CONFIGURE_ALS_RANGE_MASK, + CONFIGURE_ALS_RANGE_SH); + if (st) st = isl29018_set_irals_high_threshold(client, chip->als_high_thres); if (st) @@ -878,6 +886,14 @@ static ssize_t show_als_data(struct device *dev, if (chip->als_ir_mode == MODE_ALS) { st = isl29028_read_als_ir(chip->client, &als_ir_data); if (st) { + /* convert als data count to lux */ + /* if als_range = 0, lux = count * 0.0326 */ + /* if als_range = 1, lux = count * 0.522 */ + if (!chip->als_range) + als_ir_data = (als_ir_data * 326) / 10000; + else + als_ir_data = (als_ir_data * 522) / 1000; + buf_count = sprintf(buf, "%d\n", als_ir_data); chip->als_reading = als_ir_data; } @@ -1071,7 +1087,7 @@ static int isl29028_chip_init(struct i2c_client *client) chip->als_low_thres = 0; chip->als_high_thres = 0xFFF; - chip->als_range = 0; + chip->als_range = 1; chip->als_reading = 0; chip->als_ir_mode = 0; |