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Diffstat (limited to 'include/pch.h')
| -rw-r--r-- | include/pch.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/include/pch.h b/include/pch.h new file mode 100644 index 0000000..0b44b66 --- /dev/null +++ b/include/pch.h @@ -0,0 +1,160 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + */ + +#ifndef __pch_h +#define __pch_h + +#define PCH_RCBA 0xf0 + +#define BIOS_CTRL_BIOSWE BIT(0) + +/* All the supported PCH ioctls */ +enum pch_req_t { + /* Returns HDA config info if Azalia V1CTL enabled, -ENOENT if not */ + PCH_REQ_HDA_CONFIG, + + /* Fills out a struct pch_pmbase_info if available */ + PCH_REQ_PMBASE_INFO, + + PCH_REQ_TEST1, /* Test requests for sandbox driver */ + PCH_REQ_TEST2, + PCH_REQ_TEST3, + + PCH_REQ_COUNT, /* Number of ioctrls supported */ +}; + +/** + * struct pch_pmbase_info - Information filled in by PCH_REQ_PMBASE_INFO + * + * @pmbase: IO address of power-management controller + * @gpio0_en_ofs: Offset of GPIO0 enable register + * @pm1_sts_ofs: Offset of status register + * @pm1_cnt_ofs: Offset of control register + */ +struct pch_pmbase_info { + u16 base; + u8 gpio0_en_ofs; + u8 pm1_sts_ofs; + u8 pm1_cnt_ofs; +}; + +/** + * struct pch_ops - Operations for the Platform Controller Hub + * + * Consider using ioctl() to add rarely used or driver-specific operations. + */ +struct pch_ops { + /** + * get_spi_base() - get the address of SPI base + * + * @dev: PCH device to check + * @sbasep: Returns address of SPI base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no SPI base) + */ + int (*get_spi_base)(struct udevice *dev, ulong *sbasep); + + /** + * set_spi_protect() - set whether SPI flash is protected or not + * + * @dev: PCH device to adjust + * @protect: true to protect, false to unprotect + * + * @return 0 on success, -ENOSYS if not implemented + */ + int (*set_spi_protect)(struct udevice *dev, bool protect); + + /** + * get_gpio_base() - get the address of GPIO base + * + * @dev: PCH device to check + * @gbasep: Returns address of GPIO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no GPIO base) + */ + int (*get_gpio_base)(struct udevice *dev, u32 *gbasep); + + /** + * get_io_base() - get the address of IO base + * + * @dev: PCH device to check + * @iobasep: Returns address of IO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no IO base) + */ + int (*get_io_base)(struct udevice *dev, u32 *iobasep); + + /** + * ioctl() - perform misc read/write operations + * + * This is a catch-all operation intended to avoid adding lots of + * methods to this uclass, of which few are commonly used. Uncommon + * operations that pertain only to a few devices in this uclass should + * use this method instead of adding new methods. + * + * @dev: PCH device to check + * @req: PCH request ID + * @data: Input/output data + * @size: Size of input data (and maximum size of output data) + * @return size of output data on sucesss, -ve on error + */ + int (*ioctl)(struct udevice *dev, enum pch_req_t req, void *data, + int size); +}; + +#define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops) + +/** + * pch_get_spi_base() - get the address of SPI base + * + * @dev: PCH device to check + * @sbasep: Returns address of SPI base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no SPI base) + */ +int pch_get_spi_base(struct udevice *dev, ulong *sbasep); + +/** + * set_spi_protect() - set whether SPI flash is protected or not + * + * @dev: PCH device to adjust + * @protect: true to protect, false to unprotect + * + * @return 0 on success, -ENOSYS if not implemented + */ +int pch_set_spi_protect(struct udevice *dev, bool protect); + +/** + * pch_get_gpio_base() - get the address of GPIO base + * + * @dev: PCH device to check + * @gbasep: Returns address of GPIO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no GPIO base) + */ +int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); + +/** + * pch_get_io_base() - get the address of IO base + * + * @dev: PCH device to check + * @iobasep: Returns address of IO base if available, else 0 + * @return 0 if OK, -ve on error (e.g. there is no IO base) + */ +int pch_get_io_base(struct udevice *dev, u32 *iobasep); + +/** + * pch_ioctl() - perform misc read/write operations + * + * This is a catch-all operation intended to avoid adding lots of + * methods to this uclass, of which few are commonly used. Uncommon + * operations that pertain only to a few devices in this uclass should + * use this method instead of adding new methods. + * + * @dev: PCH device to check + * @req: PCH request ID + * @data: Input/output data + * @size: Size of input data (and maximum size of output data) + * @return size of output data on sucesss, -ve on error + */ +int pch_ioctl(struct udevice *dev, ulong req, void *data, int size); + +#endif |