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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include <linux/mod_devicetable.h>#include <linux/device.h>#include <linux/sched.h>#include <linux/mutex.h>#include <linux/of.h>#include <linux/swab.h>#include <uapi/linux/i2c.h>Go to the source code of this file.
Data Structures | |
| struct | i2c_driver |
| struct | i2c_client |
| struct | i2c_board_info |
| struct | i2c_algorithm |
| struct | i2c_adapter |
Macros | |
| #define | to_i2c_driver(d) container_of(d, struct i2c_driver, driver) |
Variables | |
| struct bus_type | i2c_bus_type |
| struct device_type | i2c_adapter_type |
: Indicates the type of the device, usually a chip name that's | |
struct i2c_client - represent an I2C slave device : I2C_CLIENT_TEN indicates the device uses a ten bit chip address; I2C_CLIENT_PEC indicates it uses SMBus Packet Error Checking : Address used on the I2C bus connected to the parent adapter. generic enough to hide second-sourcing and compatible revisions. : manages the bus segment hosting this I2C device : device's driver, hence pointer to access routines : Driver model device node for the slave. : indicates the IRQ generated by this device (if any) : member of an i2c_driver.clients list or i2c-core's userspace_devices list An i2c_client identifies a single device (i.e. chip) connected to an i2c bus. The behaviour exposed to Linux is defined by the driver managing the device. | |
| #define | to_i2c_client(d) container_of(d, struct i2c_client, dev) |
| #define | I2C_BOARD_INFO(dev_type, dev_addr) .type = dev_type, .addr = (dev_addr) |
| #define | to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) |
| #define | I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ |
| #define | I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ |
| #define | I2C_CLIENT_WAKE 0x80 /* for board_info; true iff can wake */ |
| #define | I2C_CLIENT_SCCB 0x9000 /* Use Omnivision SCCB protocol */ |
| #define | I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ |
| #define | I2C_CLASS_DDC (1<<3) /* DDC bus on graphics adapters */ |
| #define | I2C_CLASS_SPD (1<<7) /* Memory modules */ |
| #define | I2C_CLIENT_END 0xfffeU |
| #define | I2C_ADDRS(addr, addrs...) ((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END }) |
| struct i2c_client * | i2c_verify_client (struct device *dev) |
| struct i2c_adapter * | i2c_verify_adapter (struct device *dev) |
| int | i2c_for_each_dev (void *data, int(*fn)(struct device *, void *)) |
| void | i2c_lock_adapter (struct i2c_adapter *) |
| void | i2c_unlock_adapter (struct i2c_adapter *) |
| #define I2C_ADDRS | ( | addr, | |
| addrs... | |||
| ) | ((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END }) |
I2C_BOARD_INFO - macro used to list an i2c device and its address : identifies the device type : the device's address on the bus.
This macro initializes essential fields of a struct i2c_board_info, declaring what has been provided on a particular board. Optional fields (such as associated irq, or device-specific platform_data) are provided using conventional syntax.
| #define I2C_CLIENT_SCCB 0x9000 /* Use Omnivision SCCB protocol */ |
| #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ |
| #define I2C_CLIENT_WAKE 0x80 /* for board_info; true iff can wake */ |
| #define to_i2c_adapter | ( | d | ) | container_of(d, struct i2c_adapter, dev) |
| #define to_i2c_client | ( | d | ) | container_of(d, struct i2c_client, dev) |
| #define to_i2c_driver | ( | d | ) | container_of(d, struct i2c_driver, driver) |
Definition at line 1143 of file i2c-core.c.
| void i2c_lock_adapter | ( | struct i2c_adapter * | adapter | ) |
i2c_lock_adapter - Get exclusive access to an I2C bus segment : Target I2C bus segment
Definition at line 446 of file i2c-core.c.
| void i2c_unlock_adapter | ( | struct i2c_adapter * | adapter | ) |
i2c_unlock_adapter - Release exclusive access to an I2C bus segment : Target I2C bus segment
Definition at line 475 of file i2c-core.c.
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i2c_verify_adapter - return parameter as i2c_adapter or NULL : device, probably from some driver model iterator
When traversing the driver model tree, perhaps using driver model iterators like (), you can't assume very much about the nodes you find. Use this function to avoid oopses caused by wrongly treating some non-I2C device as an i2c_adapter.
Definition at line 801 of file i2c-core.c.
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read |
i2c_verify_client - return parameter as i2c_client, or NULL : device, probably from some driver model iterator
When traversing the driver model tree, perhaps using driver model iterators like (), you can't assume very much about the nodes you find. Use this function to avoid oopses caused by wrongly treating some non-I2C device as an i2c_client.
Definition at line 342 of file i2c-core.c.
| struct device_type i2c_adapter_type |
Definition at line 786 of file i2c-core.c.
Definition at line 316 of file i2c-core.c.
1.8.2