kernel/genarch/include/drivers/am335x/uart.h

   1 /*
   2  * Copyright (c) Maurizio Lombardi
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 /** @addtogroup genarch
  29  * @{
  30  */
  31 /**
  32  * @file
  33  * @brief Texas Instruments AM335x UART driver.
  34  */
  35
  36 #ifndef _KERN_AM335X_UART_H_
  37 #define _KERN_AM335X_UART_H_
  38
  39 #include "uart_regs.h"
  40
  41 #define AM335x_UART0_BASE_ADDRESS    0x44E09000
  42 #define AM335x_UART0_SIZE            4096
  43 #define AM335x_UART0_IRQ             72
  44
  45 #define AM335x_UART1_BASE_ADDRESS    0x48022000
  46 #define AM335x_UART1_SIZE            4096
  47 #define AM335x_UART1_IRQ             73
  48
  49 #define AM335x_UART2_BASE_ADDRESS    0x48024000
  50 #define AM335x_UART2_SIZE            4096
  51 #define AM335x_UART2_IRQ             74
  52
  53 #define AM335x_UART3_BASE_ADDRESS    0x481A6000
  54 #define AM335x_UART3_SIZE            4096
  55 #define AM335x_UART3_IRQ             44
  56
  57 #define AM335x_UART4_BASE_ADDRESS    0x481A8000
  58 #define AM335x_UART4_SIZE            4096
  59 #define AM335x_UART4_IRQ             45
  60
  61 #define AM335x_UART5_BASE_ADDRESS    0x481AA000
  62 #define AM335x_UART5_SIZE            4096
  63 #define AM335x_UART5_IRQ             46
  64
  65 typedef struct {
  66         am335x_uart_regs_t *regs;
  67         indev_t *indev;
  68         outdev_t outdev;
  69         irq_t irq;
  70 } am335x_uart_t;
  71
  72 #ifdef CONFIG_AM335X_UART
  73 extern bool am335x_uart_init(am335x_uart_t *uart, inr_t interrupt,
  74     uintptr_t addr, size_t size);
  75
  76 extern void am335x_uart_input_wire(am335x_uart_t *uart, indev_t *indev);
  77 #else
  78 static bool am335x_uart_init(am335x_uart_t *uart, inr_t interrupt,
  79     uintptr_t addr, size_t size)
  80 { return true; }
  81
  82 static void am335x_uart_input_wire(am335x_uart_t *uart, indev_t *indev) {}
  83 #endif
  84
  85 #endif
  86
  87 /**
  88  * @}
  89  */
  90