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| 29 | #include |
29 | #include |
| 30 | #ifdef __KERNEL__ |
30 | #ifdef __KERNEL__ |
| 31 | #include |
31 | #include |
| 32 | #include |
32 | #include |
| 33 | #include |
33 | #include |
| - | 34 | #include |
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| - | 35 | #include |
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| - | 36 | #include |
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| Line 34... | Line 37... | ||
| 34 | 37 | ||
| 35 | extern struct bus_type i2c_bus_type; |
38 | extern struct bus_type i2c_bus_type; |
| Line 36... | Line 39... | ||
| 36 | extern struct device_type i2c_adapter_type; |
39 | extern struct device_type i2c_adapter_type; |
| Line 137... | Line 140... | ||
| 137 | * @adapter: manages the bus segment hosting this I2C device |
140 | * @adapter: manages the bus segment hosting this I2C device |
| 138 | * @dev: Driver model device node for the slave. |
141 | * @dev: Driver model device node for the slave. |
| 139 | * @irq: indicates the IRQ generated by this device (if any) |
142 | * @irq: indicates the IRQ generated by this device (if any) |
| 140 | * @detected: member of an i2c_driver.clients list or i2c-core's |
143 | * @detected: member of an i2c_driver.clients list or i2c-core's |
| 141 | * userspace_devices list |
144 | * userspace_devices list |
| - | 145 | * @slave_cb: Callback when I2C slave mode of an adapter is used. The adapter |
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| - | 146 | * calls it to pass on slave events to the slave driver. |
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| 142 | * |
147 | * |
| 143 | * An i2c_client identifies a single device (i.e. chip) connected to an |
148 | * An i2c_client identifies a single device (i.e. chip) connected to an |
| 144 | * i2c bus. The behaviour exposed to Linux is defined by the driver |
149 | * i2c bus. The behaviour exposed to Linux is defined by the driver |
| 145 | * managing the device. |
150 | * managing the device. |
| 146 | */ |
151 | */ |
| Line 158... | Line 163... | ||
| 158 | #define to_i2c_client(d) container_of(d, struct i2c_client, dev) |
163 | #define to_i2c_client(d) container_of(d, struct i2c_client, dev) |
| Line 159... | Line 164... | ||
| 159 | 164 | ||
| 160 | extern struct i2c_client *i2c_verify_client(struct device *dev); |
165 | extern struct i2c_client *i2c_verify_client(struct device *dev); |
| Line -... | Line 166... | ||
| - | 166 | extern struct i2c_adapter *i2c_verify_adapter(struct device *dev); |
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| - | 167 | ||
| - | 168 | enum i2c_slave_event { |
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| - | 169 | I2C_SLAVE_REQ_READ_START, |
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| - | 170 | I2C_SLAVE_REQ_READ_END, |
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| - | 171 | I2C_SLAVE_REQ_WRITE_START, |
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| - | 172 | I2C_SLAVE_REQ_WRITE_END, |
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| 161 | extern struct i2c_adapter *i2c_verify_adapter(struct device *dev); |
173 | I2C_SLAVE_STOP, |
| 162 | 174 | }; |
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| 163 | /** |
175 | /** |
| 164 | * struct i2c_board_info - template for device creation |
176 | * struct i2c_board_info - template for device creation |
| 165 | * @type: chip type, to initialize i2c_client.name |
177 | * @type: chip type, to initialize i2c_client.name |
| Line 208... | Line 220... | ||
| 208 | * i2c_algorithm is the interface to a class of hardware solutions which can |
220 | * i2c_algorithm is the interface to a class of hardware solutions which can |
| 209 | * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 |
221 | * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 |
| 210 | * to name two of the most common. |
222 | * to name two of the most common. |
| 211 | * |
223 | * |
| 212 | * The return codes from the @master_xfer field should indicate the type of |
224 | * The return codes from the @master_xfer field should indicate the type of |
| 213 | * error code that occured during the transfer, as documented in the kernel |
225 | * error code that occurred during the transfer, as documented in the kernel |
| 214 | * Documentation file Documentation/i2c/fault-codes. |
226 | * Documentation file Documentation/i2c/fault-codes. |
| 215 | */ |
227 | */ |
| 216 | struct i2c_algorithm { |
228 | struct i2c_algorithm { |
| 217 | /* If an adapter algorithm can't do I2C-level access, set master_xfer |
229 | /* If an adapter algorithm can't do I2C-level access, set master_xfer |
| 218 | to NULL. If an adapter algorithm can do SMBus access, set |
230 | to NULL. If an adapter algorithm can do SMBus access, set |
| Line 228... | Line 240... | ||
| 228 | 240 | ||
| 229 | /* To determine what the adapter supports */ |
241 | /* To determine what the adapter supports */ |
| 230 | u32 (*functionality) (struct i2c_adapter *); |
242 | u32 (*functionality) (struct i2c_adapter *); |
| Line -... | Line 243... | ||
| - | 243 | }; |
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| - | 244 | ||
| - | 245 | int i2c_recover_bus(struct i2c_adapter *adap); |
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| - | 246 | ||
| - | 247 | /* Generic recovery routines */ |
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| - | 248 | int i2c_generic_gpio_recovery(struct i2c_adapter *adap); |
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| 231 | }; |
249 | int i2c_generic_scl_recovery(struct i2c_adapter *adap); |
| 232 | 250 | ||
| 233 | /* |
251 | /* |
| 234 | * i2c_adapter is the structure used to identify a physical i2c bus along |
252 | * i2c_adapter is the structure used to identify a physical i2c bus along |
| 235 | * with the access algorithms necessary to access it. |
253 | * with the access algorithms necessary to access it. |