1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * UP Board CPLD/FPGA driver
4 *
5 * Copyright (c) AAEON. All rights reserved.
6 * Copyright (C) 2024 Bootlin
7 *
8 * Author: Gary Wang <garywang@aaeon.com.tw>
9 * Author: Thomas Richard <thomas.richard@bootlin.com>
10 *
11 */
12
13#ifndef __LINUX_MFD_UPBOARD_FPGA_H
14#define __LINUX_MFD_UPBOARD_FPGA_H
15
16#define UPBOARD_REGISTER_SIZE 16
17
18enum upboard_fpgareg {
19 UPBOARD_REG_PLATFORM_ID = 0x10,
20 UPBOARD_REG_FIRMWARE_ID = 0x11,
21 UPBOARD_REG_FUNC_EN0 = 0x20,
22 UPBOARD_REG_FUNC_EN1 = 0x21,
23 UPBOARD_REG_GPIO_EN0 = 0x30,
24 UPBOARD_REG_GPIO_EN1 = 0x31,
25 UPBOARD_REG_GPIO_EN2 = 0x32,
26 UPBOARD_REG_GPIO_DIR0 = 0x40,
27 UPBOARD_REG_GPIO_DIR1 = 0x41,
28 UPBOARD_REG_GPIO_DIR2 = 0x42,
29 UPBOARD_REG_MAX,
30};
31
32enum upboard_fpga_type {
33 UPBOARD_UP_FPGA,
34 UPBOARD_UP2_FPGA,
35};
36
37struct upboard_fpga_data {
38 enum upboard_fpga_type type;
39 const struct regmap_config *regmap_config;
40};
41
42struct upboard_fpga {
43 struct device *dev;
44 struct regmap *regmap;
45 struct gpio_desc *enable_gpio;
46 struct gpio_desc *reset_gpio;
47 struct gpio_desc *clear_gpio;
48 struct gpio_desc *strobe_gpio;
49 struct gpio_desc *datain_gpio;
50 struct gpio_desc *dataout_gpio;
51 unsigned int firmware_version;
52 const struct upboard_fpga_data *fpga_data;
53};
54
55#endif /* __LINUX_MFD_UPBOARD_FPGA_H */
56

source code of linux/include/linux/mfd/upboard-fpga.h