| Mario Six | c0a2b08 | 2018-10-04 09:00:54 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* |
| 3 | * (C) Copyright 2017 |
| 4 | * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc |
| 5 | */ |
| 6 | |
| 7 | #ifndef _GDSYS_SOC_H_ |
| 8 | #define _GDSYS_SOC_H_ |
| 9 | |
| 10 | /** |
| 11 | * gdsys_soc_get_fpga() - Retrieve pointer to parent bus' FPGA device |
| 12 | * @child: The child device on the FPGA bus needing access to the FPGA. |
| 13 | * @fpga: Pointer to the retrieved FPGA device. |
| 14 | * |
| 15 | * To access their register maps, devices on gdsys soc buses usually have |
| 16 | * facilitate the accessor function of the IHS FPGA their parent bus is |
| 17 | * attached to. To access the FPGA device from within the bus' children, this |
| 18 | * function returns a pointer to it. |
| 19 | * |
| 20 | * Return: 0 on success, -ve on failure |
| 21 | */ |
| 22 | int gdsys_soc_get_fpga(struct udevice *child, struct udevice **fpga); |
| 23 | #endif /* _GDSYS_SOC_H_ */ |