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7be865ab KM |
1 | /* |
2 | * LP855x Backlight Driver | |
3 | * | |
4 | * Copyright (C) 2011 Texas Instruments | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #ifndef _LP855X_H | |
13 | #define _LP855X_H | |
14 | ||
15 | #define BL_CTL_SHFT (0) | |
16 | #define BRT_MODE_SHFT (1) | |
17 | #define BRT_MODE_MASK (0x06) | |
18 | ||
19 | /* Enable backlight. Only valid when BRT_MODE=10(I2C only) */ | |
20 | #define ENABLE_BL (1) | |
21 | #define DISABLE_BL (0) | |
22 | ||
23 | #define I2C_CONFIG(id) id ## _I2C_CONFIG | |
24 | #define PWM_CONFIG(id) id ## _PWM_CONFIG | |
25 | ||
26 | /* DEVICE CONTROL register - LP8550 */ | |
27 | #define LP8550_PWM_CONFIG (LP8550_PWM_ONLY << BRT_MODE_SHFT) | |
28 | #define LP8550_I2C_CONFIG ((ENABLE_BL << BL_CTL_SHFT) | \ | |
29 | (LP8550_I2C_ONLY << BRT_MODE_SHFT)) | |
30 | ||
31 | /* DEVICE CONTROL register - LP8551 */ | |
32 | #define LP8551_PWM_CONFIG LP8550_PWM_CONFIG | |
33 | #define LP8551_I2C_CONFIG LP8550_I2C_CONFIG | |
34 | ||
35 | /* DEVICE CONTROL register - LP8552 */ | |
36 | #define LP8552_PWM_CONFIG LP8550_PWM_CONFIG | |
37 | #define LP8552_I2C_CONFIG LP8550_I2C_CONFIG | |
38 | ||
39 | /* DEVICE CONTROL register - LP8553 */ | |
40 | #define LP8553_PWM_CONFIG LP8550_PWM_CONFIG | |
41 | #define LP8553_I2C_CONFIG LP8550_I2C_CONFIG | |
42 | ||
5812c13a MK |
43 | /* CONFIG register - LP8555 */ |
44 | #define LP8555_PWM_STANDBY BIT(7) | |
45 | #define LP8555_PWM_FILTER BIT(6) | |
46 | #define LP8555_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset | |
47 | when the backlight turns on */ | |
48 | #define LP8555_OFF_OPENLEDS BIT(2) | |
49 | #define LP8555_PWM_CONFIG LP8555_PWM_ONLY | |
50 | #define LP8555_I2C_CONFIG LP8555_I2C_ONLY | |
51 | #define LP8555_COMB1_CONFIG LP8555_COMBINED1 | |
52 | #define LP8555_COMB2_CONFIG LP8555_COMBINED2 | |
53 | ||
7be865ab KM |
54 | /* DEVICE CONTROL register - LP8556 */ |
55 | #define LP8556_PWM_CONFIG (LP8556_PWM_ONLY << BRT_MODE_SHFT) | |
56 | #define LP8556_COMB1_CONFIG (LP8556_COMBINED1 << BRT_MODE_SHFT) | |
57 | #define LP8556_I2C_CONFIG ((ENABLE_BL << BL_CTL_SHFT) | \ | |
58 | (LP8556_I2C_ONLY << BRT_MODE_SHFT)) | |
59 | #define LP8556_COMB2_CONFIG (LP8556_COMBINED2 << BRT_MODE_SHFT) | |
6275ce9f KM |
60 | #define LP8556_FAST_CONFIG BIT(7) /* use it if EPROMs should be maintained |
61 | when exiting the low power mode */ | |
7be865ab | 62 | |
26e8ccc2 KM |
63 | /* CONFIG register - LP8557 */ |
64 | #define LP8557_PWM_STANDBY BIT(7) | |
65 | #define LP8557_PWM_FILTER BIT(6) | |
66 | #define LP8557_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset | |
67 | when the backlight turns on */ | |
68 | #define LP8557_OFF_OPENLEDS BIT(2) | |
69 | #define LP8557_PWM_CONFIG LP8557_PWM_ONLY | |
70 | #define LP8557_I2C_CONFIG LP8557_I2C_ONLY | |
71 | #define LP8557_COMB1_CONFIG LP8557_COMBINED1 | |
72 | #define LP8557_COMB2_CONFIG LP8557_COMBINED2 | |
73 | ||
7be865ab KM |
74 | enum lp855x_chip_id { |
75 | LP8550, | |
76 | LP8551, | |
77 | LP8552, | |
78 | LP8553, | |
5812c13a | 79 | LP8555, |
7be865ab | 80 | LP8556, |
26e8ccc2 | 81 | LP8557, |
7be865ab KM |
82 | }; |
83 | ||
7be865ab KM |
84 | enum lp8550_brighntess_source { |
85 | LP8550_PWM_ONLY, | |
86 | LP8550_I2C_ONLY = 2, | |
87 | }; | |
88 | ||
89 | enum lp8551_brighntess_source { | |
90 | LP8551_PWM_ONLY = LP8550_PWM_ONLY, | |
91 | LP8551_I2C_ONLY = LP8550_I2C_ONLY, | |
92 | }; | |
93 | ||
94 | enum lp8552_brighntess_source { | |
95 | LP8552_PWM_ONLY = LP8550_PWM_ONLY, | |
96 | LP8552_I2C_ONLY = LP8550_I2C_ONLY, | |
97 | }; | |
98 | ||
99 | enum lp8553_brighntess_source { | |
100 | LP8553_PWM_ONLY = LP8550_PWM_ONLY, | |
101 | LP8553_I2C_ONLY = LP8550_I2C_ONLY, | |
102 | }; | |
103 | ||
5812c13a MK |
104 | enum lp8555_brightness_source { |
105 | LP8555_PWM_ONLY, | |
106 | LP8555_I2C_ONLY, | |
107 | LP8555_COMBINED1, /* Brightness register with shaped PWM */ | |
108 | LP8555_COMBINED2, /* PWM with shaped brightness register */ | |
109 | }; | |
110 | ||
7be865ab KM |
111 | enum lp8556_brightness_source { |
112 | LP8556_PWM_ONLY, | |
113 | LP8556_COMBINED1, /* pwm + i2c before the shaper block */ | |
114 | LP8556_I2C_ONLY, | |
115 | LP8556_COMBINED2, /* pwm + i2c after the shaper block */ | |
116 | }; | |
117 | ||
26e8ccc2 KM |
118 | enum lp8557_brightness_source { |
119 | LP8557_PWM_ONLY, | |
120 | LP8557_I2C_ONLY, | |
121 | LP8557_COMBINED1, /* pwm + i2c after the shaper block */ | |
122 | LP8557_COMBINED2, /* pwm + i2c before the shaper block */ | |
123 | }; | |
124 | ||
7be865ab KM |
125 | struct lp855x_rom_data { |
126 | u8 addr; | |
127 | u8 val; | |
128 | }; | |
129 | ||
130 | /** | |
131 | * struct lp855x_platform_data | |
132 | * @name : Backlight driver name. If it is not defined, default name is set. | |
7be865ab KM |
133 | * @device_control : value of DEVICE CONTROL register |
134 | * @initial_brightness : initial value of backlight brightness | |
8cc9764c | 135 | * @period_ns : platform specific pwm period value. unit is nano. |
7be865ab | 136 | Only valid when mode is PWM_BASED. |
7be865ab KM |
137 | * @size_program : total size of lp855x_rom_data |
138 | * @rom_data : list of new eeprom/eprom registers | |
139 | */ | |
140 | struct lp855x_platform_data { | |
600ffd33 | 141 | const char *name; |
7be865ab | 142 | u8 device_control; |
98e35be2 | 143 | u8 initial_brightness; |
8cc9764c | 144 | unsigned int period_ns; |
7be865ab KM |
145 | int size_program; |
146 | struct lp855x_rom_data *rom_data; | |
147 | }; | |
148 | ||
149 | #endif |