diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i3c/device.c | 27 | ||||
| -rw-r--r-- | drivers/i3c/internals.h | 6 | ||||
| -rw-r--r-- | drivers/i3c/master.c | 19 |
3 files changed, 37 insertions, 15 deletions
diff --git a/drivers/i3c/device.c b/drivers/i3c/device.c index 2396545763ff..8a156f5ad692 100644 --- a/drivers/i3c/device.c +++ b/drivers/i3c/device.c @@ -15,12 +15,12 @@ #include "internals.h" /** - * i3c_device_do_priv_xfers() - do I3C SDR private transfers directed to a - * specific device + * i3c_device_do_xfers() - do I3C transfers directed to a specific device * * @dev: device with which the transfers should be done * @xfers: array of transfers * @nxfers: number of transfers + * @mode: transfer mode * * Initiate one or several private SDR transfers with @dev. * @@ -33,9 +33,8 @@ * 'xfers' some time later. See I3C spec ver 1.1.1 09-Jun-2021. Section: * 5.1.2.2.3. */ -int i3c_device_do_priv_xfers(struct i3c_device *dev, - struct i3c_priv_xfer *xfers, - int nxfers) +int i3c_device_do_xfers(struct i3c_device *dev, struct i3c_xfer *xfers, + int nxfers, enum i3c_xfer_mode mode) { int ret, i; @@ -48,12 +47,12 @@ int i3c_device_do_priv_xfers(struct i3c_device *dev, } i3c_bus_normaluse_lock(dev->bus); - ret = i3c_dev_do_priv_xfers_locked(dev->desc, xfers, nxfers); + ret = i3c_dev_do_xfers_locked(dev->desc, xfers, nxfers, mode); i3c_bus_normaluse_unlock(dev->bus); return ret; } -EXPORT_SYMBOL_GPL(i3c_device_do_priv_xfers); +EXPORT_SYMBOL_GPL(i3c_device_do_xfers); /** * i3c_device_do_setdasa() - do I3C dynamic address assignement with @@ -261,6 +260,20 @@ i3c_device_match_id(struct i3c_device *i3cdev, EXPORT_SYMBOL_GPL(i3c_device_match_id); /** + * i3c_device_get_supported_xfer_mode - Returns the supported transfer mode by + * connected master controller. + * @dev: I3C device + * + * Return: a bit mask, which supported transfer mode, bit position is defined at + * enum i3c_hdr_mode + */ +u32 i3c_device_get_supported_xfer_mode(struct i3c_device *dev) +{ + return i3c_dev_get_master(dev->desc)->this->info.hdr_cap | BIT(I3C_SDR); +} +EXPORT_SYMBOL_GPL(i3c_device_get_supported_xfer_mode); + +/** * i3c_driver_register_with_owner() - register an I3C device driver * * @drv: driver to register diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h index 79ceaa5f5afd..f609e5098137 100644 --- a/drivers/i3c/internals.h +++ b/drivers/i3c/internals.h @@ -15,9 +15,9 @@ void i3c_bus_normaluse_lock(struct i3c_bus *bus); void i3c_bus_normaluse_unlock(struct i3c_bus *bus); int i3c_dev_setdasa_locked(struct i3c_dev_desc *dev); -int i3c_dev_do_priv_xfers_locked(struct i3c_dev_desc *dev, - struct i3c_priv_xfer *xfers, - int nxfers); +int i3c_dev_do_xfers_locked(struct i3c_dev_desc *dev, + struct i3c_xfer *xfers, + int nxfers, enum i3c_xfer_mode mode); int i3c_dev_disable_ibi_locked(struct i3c_dev_desc *dev); int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev); int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev, diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 823661a81f5e..f88f7e19203a 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2819,10 +2819,14 @@ EXPORT_SYMBOL_GPL(i3c_generic_ibi_recycle_slot); static int i3c_master_check_ops(const struct i3c_master_controller_ops *ops) { - if (!ops || !ops->bus_init || !ops->priv_xfers || + if (!ops || !ops->bus_init || !ops->send_ccc_cmd || !ops->do_daa || !ops->i2c_xfers) return -EINVAL; + /* Must provide one of priv_xfers (SDR only) or i3c_xfers (all modes) */ + if (!ops->priv_xfers && !ops->i3c_xfers) + return -EINVAL; + if (ops->request_ibi && (!ops->enable_ibi || !ops->disable_ibi || !ops->free_ibi || !ops->recycle_ibi_slot)) @@ -3012,9 +3016,8 @@ int i3c_dev_setdasa_locked(struct i3c_dev_desc *dev) dev->boardinfo->init_dyn_addr); } -int i3c_dev_do_priv_xfers_locked(struct i3c_dev_desc *dev, - struct i3c_priv_xfer *xfers, - int nxfers) +int i3c_dev_do_xfers_locked(struct i3c_dev_desc *dev, struct i3c_xfer *xfers, + int nxfers, enum i3c_xfer_mode mode) { struct i3c_master_controller *master; @@ -3025,9 +3028,15 @@ int i3c_dev_do_priv_xfers_locked(struct i3c_dev_desc *dev, if (!master || !xfers) return -EINVAL; - if (!master->ops->priv_xfers) + if (mode != I3C_SDR && !(master->this->info.hdr_cap & BIT(mode))) return -EOPNOTSUPP; + if (master->ops->i3c_xfers) + return master->ops->i3c_xfers(dev, xfers, nxfers, mode); + + if (mode != I3C_SDR) + return -EINVAL; + return master->ops->priv_xfers(dev, xfers, nxfers); } |