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Diffstat (limited to 'include/linux/i2c/apds990x.h')
-rw-r--r-- | include/linux/i2c/apds990x.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/include/linux/i2c/apds990x.h b/include/linux/i2c/apds990x.h new file mode 100644 index 000000000000..d186fcc5d257 --- /dev/null +++ b/include/linux/i2c/apds990x.h | |||
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1 | /* | ||
2 | * This file is part of the APDS990x sensor driver. | ||
3 | * Chip is combined proximity and ambient light sensor. | ||
4 | * | ||
5 | * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). | ||
6 | * | ||
7 | * Contact: Samu Onkalo <samu.p.onkalo@nokia.com> | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or | ||
10 | * modify it under the terms of the GNU General Public License | ||
11 | * version 2 as published by the Free Software Foundation. | ||
12 | * | ||
13 | * This program is distributed in the hope that it will be useful, but | ||
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | ||
21 | * 02110-1301 USA | ||
22 | * | ||
23 | */ | ||
24 | |||
25 | #ifndef __APDS990X_H__ | ||
26 | #define __APDS990X_H__ | ||
27 | |||
28 | |||
29 | #define APDS_IRLED_CURR_12mA 0x3 | ||
30 | #define APDS_IRLED_CURR_25mA 0x2 | ||
31 | #define APDS_IRLED_CURR_50mA 0x1 | ||
32 | #define APDS_IRLED_CURR_100mA 0x0 | ||
33 | |||
34 | /** | ||
35 | * struct apds990x_chip_factors - defines effect of the cover window | ||
36 | * @ga: Total glass attenuation | ||
37 | * @cf1: clear channel factor 1 for raw to lux conversion | ||
38 | * @irf1: IR channel factor 1 for raw to lux conversion | ||
39 | * @cf2: clear channel factor 2 for raw to lux conversion | ||
40 | * @irf2: IR channel factor 2 for raw to lux conversion | ||
41 | * @df: device factor for conversion formulas | ||
42 | * | ||
43 | * Structure for tuning ALS calculation to match with environment. | ||
44 | * Values depend on the material above the sensor and the sensor | ||
45 | * itself. If the GA is zero, driver will use uncovered sensor default values | ||
46 | * format: decimal value * APDS_PARAM_SCALE except df which is plain integer. | ||
47 | */ | ||
48 | #define APDS_PARAM_SCALE 4096 | ||
49 | struct apds990x_chip_factors { | ||
50 | int ga; | ||
51 | int cf1; | ||
52 | int irf1; | ||
53 | int cf2; | ||
54 | int irf2; | ||
55 | int df; | ||
56 | }; | ||
57 | |||
58 | /** | ||
59 | * struct apds990x_platform_data - platform data for apsd990x.c driver | ||
60 | * @cf: chip factor data | ||
61 | * @pddrive: IR-led driving current | ||
62 | * @ppcount: number of IR pulses used for proximity estimation | ||
63 | * @setup_resources: interrupt line setup call back function | ||
64 | * @release_resources: interrupt line release call back function | ||
65 | * | ||
66 | * Proximity detection result depends heavily on correct ppcount, pdrive | ||
67 | * and cover window. | ||
68 | * | ||
69 | */ | ||
70 | |||
71 | struct apds990x_platform_data { | ||
72 | struct apds990x_chip_factors cf; | ||
73 | u8 pdrive; | ||
74 | u8 ppcount; | ||
75 | int (*setup_resources)(void); | ||
76 | int (*release_resources)(void); | ||
77 | }; | ||
78 | |||
79 | #endif | ||