diff options
Diffstat (limited to 'include/pch.h')
| -rw-r--r-- | include/pch.h | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/include/pch.h b/include/pch.h index 73994b8343..b8b62d74ac 100644 --- a/include/pch.h +++ b/include/pch.h @@ -11,7 +11,20 @@ #define BIOS_CTRL_BIOSWE BIT(0) -/* Operations for the Platform Controller Hub */ +/* All the supported PCH ioctls */ +enum pch_req_t { + PCH_REQ_TEST1, /* Test requests for sandbox driver */ + PCH_REQ_TEST2, + PCH_REQ_TEST3, + + PCH_REQ_COUNT, /* Number of ioctrls supported */ +}; + +/** + * 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 @@ -49,6 +62,23 @@ struct pch_ops { * @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) @@ -90,4 +120,20 @@ int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); */ 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 |