diff options
Diffstat (limited to 'include/linux/i3c')
| -rw-r--r-- | include/linux/i3c/device.h | 7 | ||||
| -rw-r--r-- | include/linux/i3c/master.h | 27 |
2 files changed, 27 insertions, 7 deletions
diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h index e119f11948ef..b674f64d0822 100644 --- a/include/linux/i3c/device.h +++ b/include/linux/i3c/device.h @@ -183,10 +183,7 @@ struct i3c_driver { const struct i3c_device_id *id_table; }; -static inline struct i3c_driver *drv_to_i3cdrv(struct device_driver *drv) -{ - return container_of(drv, struct i3c_driver, driver); -} +#define drv_to_i3cdrv(__drv) container_of_const(__drv, struct i3c_driver, driver) struct device *i3cdev_to_dev(struct i3c_device *i3cdev); @@ -286,7 +283,7 @@ static inline void i3c_i2c_driver_unregister(struct i3c_driver *i3cdrv, * module_i3c_i2c_driver() - Register a module providing an I3C and an I2C * driver * @__i3cdrv: the I3C driver to register - * @__i2cdrv: the I3C driver to register + * @__i2cdrv: the I2C driver to register * * Provide generic init/exit functions that simply register/unregister an I3C * and an I2C driver. diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index 0ca27dd86956..12d532b012c5 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -33,6 +33,7 @@ enum { struct i3c_master_controller; struct i3c_bus; struct i3c_device; +extern const struct bus_type i3c_bus_type; /** * struct i3c_i2c_dev_desc - Common part of the I3C/I2C device descriptor @@ -277,13 +278,29 @@ enum i3c_bus_mode { }; /** + * enum i3c_open_drain_speed - I3C open-drain speed + * @I3C_OPEN_DRAIN_SLOW_SPEED: Slow open-drain speed for sending the first + * broadcast address. The first broadcast address at this speed + * will be visible to all devices on the I3C bus. I3C devices + * working in I2C mode will turn off their spike filter when + * switching into I3C mode. + * @I3C_OPEN_DRAIN_NORMAL_SPEED: Normal open-drain speed in I3C bus mode. + */ +enum i3c_open_drain_speed { + I3C_OPEN_DRAIN_SLOW_SPEED, + I3C_OPEN_DRAIN_NORMAL_SPEED, +}; + +/** * enum i3c_addr_slot_status - I3C address slot status * @I3C_ADDR_SLOT_FREE: address is free * @I3C_ADDR_SLOT_RSVD: address is reserved * @I3C_ADDR_SLOT_I2C_DEV: address is assigned to an I2C device * @I3C_ADDR_SLOT_I3C_DEV: address is assigned to an I3C device * @I3C_ADDR_SLOT_STATUS_MASK: address slot mask - * + * @I3C_ADDR_SLOT_EXT_STATUS_MASK: address slot mask with extended information + * @I3C_ADDR_SLOT_EXT_DESIRED: the bitmask represents addresses that are preferred by some devices, + * such as the "assigned-address" property in a device tree source. * On an I3C bus, addresses are assigned dynamically, and we need to know which * addresses are free to use and which ones are already assigned. * @@ -296,8 +313,12 @@ enum i3c_addr_slot_status { I3C_ADDR_SLOT_I2C_DEV, I3C_ADDR_SLOT_I3C_DEV, I3C_ADDR_SLOT_STATUS_MASK = 3, + I3C_ADDR_SLOT_EXT_STATUS_MASK = 7, + I3C_ADDR_SLOT_EXT_DESIRED = BIT(2), }; +#define I3C_ADDR_SLOT_STATUS_BITS 4 + /** * struct i3c_bus - I3C bus object * @cur_master: I3C master currently driving the bus. Since I3C is multi-master @@ -339,7 +360,7 @@ enum i3c_addr_slot_status { struct i3c_bus { struct i3c_dev_desc *cur_master; int id; - unsigned long addrslots[((I2C_MAX_ADDR + 1) * 2) / BITS_PER_LONG]; + unsigned long addrslots[((I2C_MAX_ADDR + 1) * I3C_ADDR_SLOT_STATUS_BITS) / BITS_PER_LONG]; enum i3c_bus_mode mode; struct { unsigned long i3c; @@ -435,6 +456,7 @@ struct i3c_bus { * NULL. * @enable_hotjoin: enable hot join event detect. * @disable_hotjoin: disable hot join event detect. + * @set_speed: adjust I3C open drain mode timing. */ struct i3c_master_controller_ops { int (*bus_init)(struct i3c_master_controller *master); @@ -463,6 +485,7 @@ struct i3c_master_controller_ops { struct i3c_ibi_slot *slot); int (*enable_hotjoin)(struct i3c_master_controller *master); int (*disable_hotjoin)(struct i3c_master_controller *master); + int (*set_speed)(struct i3c_master_controller *master, enum i3c_open_drain_speed speed); }; /** |