1 /* SPDX-License-Identifier: GPL-2.0 */
2 // TI LMU Common Core
3 // Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
4
5 #ifndef _TI_LMU_COMMON_H_
6 #define _TI_LMU_COMMON_H_
7
8 #include <linux/delay.h>
9 #include <linux/device.h>
10 #include <linux/init.h>
11 #include <linux/leds.h>
12 #include <linux/module.h>
13 #include <linux/regmap.h>
14 #include <linux/slab.h>
15 #include <uapi/linux/uleds.h>
16
17 #define LMU_11BIT_LSB_MASK (BIT(0) | BIT(1) | BIT(2))
18 #define LMU_11BIT_MSB_SHIFT 3
19
20 #define MAX_BRIGHTNESS_8BIT 255
21 #define MAX_BRIGHTNESS_11BIT 2047
22
23 struct ti_lmu_bank {
24 struct regmap *regmap;
25
26 int max_brightness;
27
28 u8 lsb_brightness_reg;
29 u8 msb_brightness_reg;
30
31 u8 runtime_ramp_reg;
32 u32 ramp_up_usec;
33 u32 ramp_down_usec;
34 };
35
36 int ti_lmu_common_set_brightness(struct ti_lmu_bank *lmu_bank, int brightness);
37
38 int ti_lmu_common_set_ramp(struct ti_lmu_bank *lmu_bank);
39
40 int ti_lmu_common_get_ramp_params(struct device *dev,
41 struct fwnode_handle *child,
42 struct ti_lmu_bank *lmu_data);
43
44 int ti_lmu_common_get_brt_res(struct device *dev, struct fwnode_handle *child,
45 struct ti_lmu_bank *lmu_data);
46
47 #endif /* _TI_LMU_COMMON_H_ */
48
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