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
  14 struct 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
  22 struct 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
  32 struct 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
  45 int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  46 void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
  47
  48 static 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 }
  56 static 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
  64 int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
  65         unsigned int bytes);
  66 int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
  67         unsigned int bytes);
  68 int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
  69 void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
  70 void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
  71         unsigned int bytes);
  72
  73 struct vuart_triggers {
  74         unsigned long rx;
  75         unsigned long tx;
  76 };
  77
  78 int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev,
  79         struct vuart_triggers *trig);
  80 int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx,
  81         unsigned int rx);
  82 int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev);
  83 int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev);
  84 int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev);
  85 int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev);
  86 int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev);
  87 int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev);
  88
  89 #endif