arch/arm/mach-imx/lluart.c

   1 /*
   2  * Copyright 2011 Freescale Semiconductor, Inc.
   3  * Copyright 2011 Linaro Ltd.
   4  *
   5  * The code contained herein is licensed under the GNU General Public
   6  * License. You may obtain a copy of the GNU General Public License
   7  * Version 2 or later at the following locations:
   8  *
   9  * http://www.opensource.org/licenses/gpl-license.html
  10  * http://www.gnu.org/copyleft/gpl.html
  11  */
  12
  13 #include <linux/init.h>
  14 #include <asm/page.h>
  15 #include <asm/sizes.h>
  16 #include <asm/mach/map.h>
  17
  18 #include "hardware.h"
  19
  20 #define IMX6Q_UART1_BASE_ADDR   0x02020000
  21 #define IMX6Q_UART2_BASE_ADDR   0x021e8000
  22 #define IMX6Q_UART3_BASE_ADDR   0x021ec000
  23 #define IMX6Q_UART4_BASE_ADDR   0x021f0000
  24 #define IMX6Q_UART5_BASE_ADDR   0x021f4000
  25
  26 /*
  27  * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
  28  * of IMX6Q_UART##n##_BASE_ADDR.
  29  */
  30 #define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
  31 #define IMX6Q_UART_BASE(n)      IMX6Q_UART_BASE_ADDR(n)
  32 #define IMX6Q_DEBUG_UART_BASE   IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
  33
  34 static struct map_desc imx_lluart_desc = {
  35 #ifdef CONFIG_DEBUG_IMX6Q_UART
  36         .virtual        = IMX_IO_P2V(IMX6Q_DEBUG_UART_BASE),
  37         .pfn            = __phys_to_pfn(IMX6Q_DEBUG_UART_BASE),
  38         .length         = 0x4000,
  39         .type           = MT_DEVICE,
  40 #endif
  41 };
  42
  43 void __init imx_lluart_map_io(void)
  44 {
  45         if (imx_lluart_desc.virtual)
  46                 iotable_init(&imx_lluart_desc, 1);
  47 }