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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * Copyright (c) 2015 Google, Inc
- * Written by Simon Glass <sjg@chromium.org>
- */
- #ifndef __pch_h
- #define __pch_h
- #include <linux/bitops.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
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