diff options
| author | Thomas Chou <thomas@wytron.com.tw> | 2015-10-07 20:20:51 +0800 |
|---|---|---|
| committer | Thomas Chou <thomas@wytron.com.tw> | 2015-10-23 07:37:03 +0800 |
| commit | 4395e06eb9907e22869cfe3bf6259a0f0cefca13 (patch) | |
| tree | cd7e94d0047ac23674a164f93440ce7fc59b8e46 /include | |
| parent | 2e2da4c67dc1adc43a2d1417d8595bb2543ecfe6 (diff) | |
dm: implement a Miscellaneous uclass
Implement a Miscellaneous uclass with generic read or
write operations. This class is used only for those
do not fit other more general classes.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dm/uclass-id.h | 1 | ||||
| -rw-r--r-- | include/misc.h | 79 |
2 files changed, 80 insertions, 0 deletions
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 330ecd2388..886a44c134 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -39,6 +39,7 @@ enum uclass_id { UCLASS_LED, /* Light-emitting diode (LED) */ UCLASS_LPC, /* x86 'low pin count' interface */ UCLASS_MASS_STORAGE, /* Mass storage device */ + UCLASS_MISC, /* Miscellaneous device */ UCLASS_MMC, /* SD / MMC card or chip */ UCLASS_MOD_EXP, /* RSA Mod Exp device */ UCLASS_PCH, /* x86 platform controller hub */ diff --git a/include/misc.h b/include/misc.h new file mode 100644 index 0000000000..7e9badfabd --- /dev/null +++ b/include/misc.h @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _MISC_H_ +#define _MISC_H_ + +/* + * Read the device to buffer, optional. + * + * @dev: the device + * @offset: offset to read the device + * @buf: pointer to data buffer + * @size: data size in bytes to read the device + * @return: 0 if OK, -ve on error + */ +int misc_read(struct udevice *dev, int offset, void *buf, int size); +/* + * Write buffer to the device, optional. + * + * @dev: the device + * @offset: offset to write the device + * @buf: pointer to data buffer + * @size: data size in bytes to write the device + * @return: 0 if OK, -ve on error + */ +int misc_write(struct udevice *dev, int offset, void *buf, int size); +/* + * Assert command to the device, optional. + * + * @dev: the device + * @request: command to be sent to the device + * @buf: pointer to buffer related to the requset + * @return: 0 if OK, -ve on error + */ +int misc_ioctl(struct udevice *dev, unsigned long request, void *buf); + +/* + * struct misc_ops - Driver model Misc operations + * + * The uclass interface is implemented by all miscellaneous devices which + * use driver model. + */ +struct misc_ops { + /* + * Read the device to buffer, optional. + * + * @dev: the device + * @offset: offset to read the device + * @buf: pointer to data buffer + * @size: data size in bytes to read the device + * @return: 0 if OK, -ve on error + */ + int (*read)(struct udevice *dev, int offset, void *buf, int size); + /* + * Write buffer to the device, optional. + * + * @dev: the device + * @offset: offset to write the device + * @buf: pointer to data buffer + * @size: data size in bytes to write the device + * @return: 0 if OK, -ve on error + */ + int (*write)(struct udevice *dev, int offset, const void *buf, + int size); + /* + * Assert command to the device, optional. + * + * @dev: the device + * @request: command to be sent to the device + * @buf: pointer to buffer related to the requset + * @return: 0 if OK, -ve on error + */ + int (*ioctl)(struct udevice *dev, unsigned long request, void *buf); +}; + +#endif /* _MISC_H_ */ |