diff options
Diffstat (limited to 'drivers/cdx/cdx.c')
| -rw-r--r-- | drivers/cdx/cdx.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c index d2cad4c670a0..9efb7584f952 100644 --- a/drivers/cdx/cdx.c +++ b/drivers/cdx/cdx.c @@ -182,6 +182,38 @@ cdx_match_id(const struct cdx_device_id *ids, struct cdx_device *dev) return NULL; } +int cdx_set_master(struct cdx_device *cdx_dev) +{ + struct cdx_controller *cdx = cdx_dev->cdx; + struct cdx_device_config dev_config; + int ret = -EOPNOTSUPP; + + dev_config.type = CDX_DEV_BUS_MASTER_CONF; + dev_config.bus_master_enable = true; + if (cdx->ops->dev_configure) + ret = cdx->ops->dev_configure(cdx, cdx_dev->bus_num, + cdx_dev->dev_num, &dev_config); + + return ret; +} +EXPORT_SYMBOL_GPL(cdx_set_master); + +int cdx_clear_master(struct cdx_device *cdx_dev) +{ + struct cdx_controller *cdx = cdx_dev->cdx; + struct cdx_device_config dev_config; + int ret = -EOPNOTSUPP; + + dev_config.type = CDX_DEV_BUS_MASTER_CONF; + dev_config.bus_master_enable = false; + if (cdx->ops->dev_configure) + ret = cdx->ops->dev_configure(cdx, cdx_dev->bus_num, + cdx_dev->dev_num, &dev_config); + + return ret; +} +EXPORT_SYMBOL_GPL(cdx_clear_master); + /** * cdx_bus_match - device to driver matching callback * @dev: the cdx device to match against |