diff options
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 1361637c369d..582ef05ec07e 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -300,6 +300,7 @@ struct i2c_driver { * generic enough to hide second-sourcing and compatible revisions. * @adapter: manages the bus segment hosting this I2C device * @dev: Driver model device node for the slave. + * @init_irq: IRQ that was set at initialization * @irq: indicates the IRQ generated by this device (if any) * @detected: member of an i2c_driver.clients list or i2c-core's * userspace_devices list @@ -452,20 +453,20 @@ i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *inf * a default probing method is used. */ extern struct i2c_client * +i2c_new_scanned_device(struct i2c_adapter *adap, + struct i2c_board_info *info, + unsigned short const *addr_list, + int (*probe)(struct i2c_adapter *adap, unsigned short addr)); + +extern struct i2c_client * i2c_new_probed_device(struct i2c_adapter *adap, - struct i2c_board_info *info, - unsigned short const *addr_list, - int (*probe)(struct i2c_adapter *adap, unsigned short addr)); + struct i2c_board_info *info, + unsigned short const *addr_list, + int (*probe)(struct i2c_adapter *adap, unsigned short addr)); /* Common custom probe functions */ extern int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr); -/* For devices that use several addresses, use i2c_new_dummy() to make - * client handles for the extra addresses. - */ -extern struct i2c_client * -i2c_new_dummy(struct i2c_adapter *adap, u16 address); - extern struct i2c_client * i2c_new_dummy_device(struct i2c_adapter *adapter, u16 address); @@ -575,6 +576,10 @@ struct i2c_lock_operations { * @scl_int_delay_ns: time IP core additionally needs to setup SCL in ns * @sda_fall_ns: time SDA signal takes to fall in ns; t(f) in the I2C specification * @sda_hold_ns: time IP core additionally needs to hold SDA in ns + * @digital_filter_width_ns: width in ns of spikes on i2c lines that the IP core + * digital filter can filter out + * @analog_filter_cutoff_freq_hz: threshold frequency for the low pass IP core + * analog filter */ struct i2c_timings { u32 bus_freq_hz; @@ -583,6 +588,8 @@ struct i2c_timings { u32 scl_int_delay_ns; u32 sda_fall_ns; u32 sda_hold_ns; + u32 digital_filter_width_ns; + u32 analog_filter_cutoff_freq_hz; }; /** @@ -844,8 +851,10 @@ extern void i2c_del_driver(struct i2c_driver *driver); #define i2c_add_driver(driver) \ i2c_register_driver(THIS_MODULE, driver) -extern struct i2c_client *i2c_use_client(struct i2c_client *client); -extern void i2c_release_client(struct i2c_client *client); +static inline bool i2c_client_has_driver(struct i2c_client *client) +{ + return !IS_ERR_OR_NULL(client) && client->dev.driver; +} /* call the i2c_client->command() of all attached clients with * the given arguments */ |