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| author | Hans de Goede <hdegoede@redhat.com> | 2020-04-28 19:29:21 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-05-10 10:46:02 +0100 |
| commit | 63b1be78774f8c3bdb9efd862ba7dfe8e2c056ff (patch) | |
| tree | 5e19cc70b2b2eaa237dea6935cf5e3d1e0931bc9 /drivers/iio | |
| parent | f50f98310e51b3712a4e544c75615e89c8233125 (diff) | |
| download | linux-stable-63b1be78774f8c3bdb9efd862ba7dfe8e2c056ff.tar.gz linux-stable-63b1be78774f8c3bdb9efd862ba7dfe8e2c056ff.tar.bz2 linux-stable-63b1be78774f8c3bdb9efd862ba7dfe8e2c056ff.zip | |
iio: light: cm32181: Make lux_per_bit and lux_per_bit_base_it runtime settings
Make lux_per_bit and lux_per_bit_base_it settings stored in struct
cm32181_chip instead of a hardcoded (defined) values.
This is a preparation patch for reading some ACPI tables which specify
a device specific lux_per_bit value.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/light/cm32181.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c index 84c8d3144d03..a5deb0750313 100644 --- a/drivers/iio/light/cm32181.c +++ b/drivers/iio/light/cm32181.c @@ -70,6 +70,8 @@ struct cm32181_chip { u16 conf_regs[CM32181_CONF_REG_NUM]; unsigned long init_regs_bitmap; int calibscale; + int lux_per_bit; + int lux_per_bit_base_it; int num_als_it; const int *als_it_bits; const int *als_it_values; @@ -115,6 +117,8 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181) CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT; cm32181->init_regs_bitmap = BIT(CM32181_REG_ADDR_CMD); cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT; + cm32181->lux_per_bit = CM32181_LUX_PER_BIT; + cm32181->lux_per_bit_base_it = CM32181_LUX_PER_BIT_BASE_IT; /* Initialize registers*/ for_each_set_bit(i, &cm32181->init_regs_bitmap, CM32181_CONF_REG_NUM) { @@ -211,8 +215,8 @@ static int cm32181_get_lux(struct cm32181_chip *cm32181) if (ret < 0) return -EINVAL; - lux = CM32181_LUX_PER_BIT; - lux *= CM32181_LUX_PER_BIT_BASE_IT; + lux = cm32181->lux_per_bit; + lux *= cm32181->lux_per_bit_base_it; lux = div_u64(lux, als_it); ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS); |