diff options
Diffstat (limited to 'drivers/staging/fieldbus/anybuss/anybuss-controller.h')
| -rw-r--r-- | drivers/staging/fieldbus/anybuss/anybuss-controller.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/staging/fieldbus/anybuss/anybuss-controller.h b/drivers/staging/fieldbus/anybuss/anybuss-controller.h new file mode 100644 index 000000000000..02fa0749043b --- /dev/null +++ b/drivers/staging/fieldbus/anybuss/anybuss-controller.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Anybus-S controller definitions + * + * Copyright 2018 Arcx Inc + */ + +#ifndef __LINUX_ANYBUSS_CONTROLLER_H__ +#define __LINUX_ANYBUSS_CONTROLLER_H__ + +#include <linux/device.h> +#include <linux/regmap.h> + +/* + * To instantiate an Anybus-S host, a controller should provide the following: + * - a reset function which resets the attached card; + * - a regmap which provides access to the attached card's dpram; + * - the irq of the attached card + */ +/** + * struct anybuss_ops - Controller resources to instantiate an Anybus-S host + * + * @reset: asserts/deasserts the anybus card's reset line. + * @regmap: provides access to the card's dual-port RAM area. + * @irq: number of the interrupt connected to the card's interrupt line. + * @host_idx: for multi-host controllers, the host index: + * 0 for the first host on the controller, 1 for the second, etc. + */ +struct anybuss_ops { + void (*reset)(struct device *dev, bool assert); + struct regmap *regmap; + int irq; + int host_idx; +}; + +struct anybuss_host; + +struct anybuss_host * __must_check +anybuss_host_common_probe(struct device *dev, + const struct anybuss_ops *ops); +void anybuss_host_common_remove(struct anybuss_host *host); + +struct anybuss_host * __must_check +devm_anybuss_host_common_probe(struct device *dev, + const struct anybuss_ops *ops); + +#endif /* __LINUX_ANYBUSS_CONTROLLER_H__ */ |