LXR linux/drivers/ps3/vuart.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  PS3 virtual uart
   4 *
   5 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   6 *  Copyright 2006 Sony Corp.
   7 */
   8
   9#if !defined(_PS3_VUART_H)
  10#define _PS3_VUART_H
  11
  12#include <asm/ps3.h>
  13
  14struct ps3_vuart_stats {
  15        unsigned long bytes_written;
  16        unsigned long bytes_read;
  17        unsigned long tx_interrupts;
  18        unsigned long rx_interrupts;
  19        unsigned long disconnect_interrupts;
  20};
  21
  22struct ps3_vuart_work {
  23        struct work_struct work;
  24        unsigned long trigger;
  25        struct ps3_system_bus_device *dev; /* to convert work to device */
  26};
  27
  28/**
  29 * struct ps3_vuart_port_driver - a driver for a device on a vuart port
  30 */
  31
  32struct ps3_vuart_port_driver {
  33        struct ps3_system_bus_driver core;
  34        int (*probe)(struct ps3_system_bus_device *);
  35        int (*remove)(struct ps3_system_bus_device *);
  36        void (*shutdown)(struct ps3_system_bus_device *);
  37        void (*work)(struct ps3_system_bus_device *);
  38        /* int (*tx_event)(struct ps3_system_bus_device *dev); */
  39        /* int (*rx_event)(struct ps3_system_bus_device *dev); */
  40        /* int (*disconnect_event)(struct ps3_system_bus_device *dev); */
  41        /* int (*suspend)(struct ps3_system_bus_device *, pm_message_t); */
  42        /* int (*resume)(struct ps3_system_bus_device *); */
  43};
  44
  45int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  46void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
  47
  48static inline struct ps3_vuart_port_driver *
  49        ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device *_dev)
  50{
  51        struct ps3_system_bus_driver *sbd =
  52                ps3_system_bus_dev_to_system_bus_drv(_dev);
  53        BUG_ON(!sbd);
  54        return container_of(sbd, struct ps3_vuart_port_driver, core);
  55}
  56static inline struct ps3_system_bus_device *ps3_vuart_work_to_system_bus_dev(
  57        struct work_struct *_work)
  58{
  59        struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
  60                work);
  61        return vw->dev;
  62}
  63
  64int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
  65        unsigned int bytes);
  66int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
  67        unsigned int bytes);
  68int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
  69void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
  70void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
  71        unsigned int bytes);
  72
  73struct vuart_triggers {
  74        unsigned long rx;
  75        unsigned long tx;
  76};
  77
  78int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev,
  79        struct vuart_triggers *trig);
  80int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx,
  81        unsigned int rx);
  82int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev);
  83int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev);
  84int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev);
  85int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev);
  86int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev);
  87int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev);
  88
  89#endif
  90