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iio: light: ltr501: Added ltr303 driver support 

Previously ltr501 driver supported a number of light and,
proximity sensors including ltr501, ltr559 and ltr301.
This adds support for another light sensor ltr303
used in Seeed Studio reTerminal, a carrier board
for Raspberry Pi 4 CM.

Signed-off-by: Maslov Dmitry <maslovdmitry@seeed.cc>
Link: https://lore.kernel.org/r/20211106174137.6783-1-maslovdmitry@seeed.cc
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Maslov Dmitry 2021-11-06 18:41:37 +01:00 committed by Jonathan Cameron
parent 471d040def
commit 7d71d289e1
1 changed files with 16 additions and 1 deletions
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17
drivers/iio/light/ltr501.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* ltr501.c - Support for Lite-On LTR501 ambient light and proximity sensor
* Support for Lite-On LTR501 and similar ambient light and proximity sensors.
*
* Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net>
*
@ -98,6 +98,7 @@ enum {
ltr501 = 0,
ltr559,
ltr301,
ltr303,
};
struct ltr501_gain {
@ -1231,6 +1232,18 @@ static const struct ltr501_chip_info ltr501_chip_info_tbl[] = {
.channels = ltr301_channels,
.no_channels = ARRAY_SIZE(ltr301_channels),
},
[ltr303] = {
.partid = 0x0A,
.als_gain = ltr559_als_gain_tbl,
.als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl),
.als_mode_active = BIT(0),
.als_gain_mask = BIT(2) | BIT(3) | BIT(4),
.als_gain_shift = 2,
.info = &ltr301_info,
.info_no_irq = &ltr301_info_no_irq,
.channels = ltr301_channels,
.no_channels = ARRAY_SIZE(ltr301_channels),
},
};
static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val)
@ -1605,6 +1618,7 @@ static const struct i2c_device_id ltr501_id[] = {
{ "ltr501", ltr501},
{ "ltr559", ltr559},
{ "ltr301", ltr301},
{ "ltr303", ltr303},
{ }
};
MODULE_DEVICE_TABLE(i2c, ltr501_id);
@ -1613,6 +1627,7 @@ static const struct of_device_id ltr501_of_match[] = {
{ .compatible = "liteon,ltr501", },
{ .compatible = "liteon,ltr559", },
{ .compatible = "liteon,ltr301", },
{ .compatible = "liteon,ltr303", },
{}
};
MODULE_DEVICE_TABLE(of, ltr501_of_match);