1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2015 Google, Inc 4 * Written by Simon Glass <sjg (at) chromium.org> 5 */ 6 7 #ifndef __pch_h 8 #define __pch_h 9 10 #define PCH_RCBA 0xf0 11 12 #define BIOS_CTRL_BIOSWE BIT(0) 13 14 /* Operations for the Platform Controller Hub */ 15 struct pch_ops { 16 /** 17 * get_spi_base() - get the address of SPI base 18 * 19 * @dev: PCH device to check 20 * @sbasep: Returns address of SPI base if available, else 0 21 * @return 0 if OK, -ve on error (e.g. there is no SPI base) 22 */ 23 int (*get_spi_base)(struct udevice *dev, ulong *sbasep); 24 25 /** 26 * set_spi_protect() - set whether SPI flash is protected or not 27 * 28 * @dev: PCH device to adjust 29 * @protect: true to protect, false to unprotect 30 * 31 * @return 0 on success, -ENOSYS if not implemented 32 */ 33 int (*set_spi_protect)(struct udevice *dev, bool protect); 34 35 /** 36 * get_gpio_base() - get the address of GPIO base 37 * 38 * @dev: PCH device to check 39 * @gbasep: Returns address of GPIO base if available, else 0 40 * @return 0 if OK, -ve on error (e.g. there is no GPIO base) 41 */ 42 int (*get_gpio_base)(struct udevice *dev, u32 *gbasep); 43 44 /** 45 * get_io_base() - get the address of IO base 46 * 47 * @dev: PCH device to check 48 * @iobasep: Returns address of IO base if available, else 0 49 * @return 0 if OK, -ve on error (e.g. there is no IO base) 50 */ 51 int (*get_io_base)(struct udevice *dev, u32 *iobasep); 52 }; 53 54 #define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops) 55 56 /** 57 * pch_get_spi_base() - get the address of SPI base 58 * 59 * @dev: PCH device to check 60 * @sbasep: Returns address of SPI base if available, else 0 61 * @return 0 if OK, -ve on error (e.g. there is no SPI base) 62 */ 63 int pch_get_spi_base(struct udevice *dev, ulong *sbasep); 64 65 /** 66 * set_spi_protect() - set whether SPI flash is protected or not 67 * 68 * @dev: PCH device to adjust 69 * @protect: true to protect, false to unprotect 70 * 71 * @return 0 on success, -ENOSYS if not implemented 72 */ 73 int pch_set_spi_protect(struct udevice *dev, bool protect); 74 75 /** 76 * pch_get_gpio_base() - get the address of GPIO base 77 * 78 * @dev: PCH device to check 79 * @gbasep: Returns address of GPIO base if available, else 0 80 * @return 0 if OK, -ve on error (e.g. there is no GPIO base) 81 */ 82 int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); 83 84 /** 85 * pch_get_io_base() - get the address of IO base 86 * 87 * @dev: PCH device to check 88 * @iobasep: Returns address of IO base if available, else 0 89 * @return 0 if OK, -ve on error (e.g. there is no IO base) 90 */ 91 int pch_get_io_base(struct udevice *dev, u32 *iobasep); 92 93 #endif 94
