arch/arm/mach-mx2/serial.c

   1 /*
   2  * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   3  * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/serial.h>
  23 #include <asm/arch/hardware.h>
  24 #include <asm/arch/imx-uart.h>
  25
  26 static struct resource uart0[] = {
  27         {
  28                 .start = UART1_BASE_ADDR,
  29                 .end = UART1_BASE_ADDR + 0x0B5,
  30                 .flags = IORESOURCE_MEM,
  31         }, {
  32                 .start = MXC_INT_UART1,
  33                 .end = MXC_INT_UART1,
  34                 .flags = IORESOURCE_IRQ,
  35         },
  36 };
  37
  38 static struct platform_device mxc_uart_device0 = {
  39         .name = "imx-uart",
  40         .id = 0,
  41         .resource = uart0,
  42         .num_resources = ARRAY_SIZE(uart0),
  43 };
  44
  45 static struct resource uart1[] = {
  46         {
  47                 .start = UART2_BASE_ADDR,
  48                 .end = UART2_BASE_ADDR + 0x0B5,
  49                 .flags = IORESOURCE_MEM,
  50         }, {
  51                 .start = MXC_INT_UART2,
  52                 .end = MXC_INT_UART2,
  53                 .flags = IORESOURCE_IRQ,
  54         },
  55 };
  56
  57 static struct platform_device mxc_uart_device1 = {
  58         .name = "imx-uart",
  59         .id = 1,
  60         .resource = uart1,
  61         .num_resources = ARRAY_SIZE(uart1),
  62 };
  63
  64 static struct resource uart2[] = {
  65         {
  66                 .start = UART3_BASE_ADDR,
  67                 .end = UART3_BASE_ADDR + 0x0B5,
  68                 .flags = IORESOURCE_MEM,
  69         }, {
  70                 .start = MXC_INT_UART3,
  71                 .end = MXC_INT_UART3,
  72                 .flags = IORESOURCE_IRQ,
  73         },
  74 };
  75
  76 static struct platform_device mxc_uart_device2 = {
  77         .name = "imx-uart",
  78         .id = 2,
  79         .resource = uart2,
  80         .num_resources = ARRAY_SIZE(uart2),
  81 };
  82
  83 static struct resource uart3[] = {
  84         {
  85                 .start = UART4_BASE_ADDR,
  86                 .end = UART4_BASE_ADDR + 0x0B5,
  87                 .flags = IORESOURCE_MEM,
  88         }, {
  89                 .start = MXC_INT_UART4,
  90                 .end = MXC_INT_UART4,
  91                 .flags = IORESOURCE_IRQ,
  92         },
  93 };
  94
  95 static struct platform_device mxc_uart_device3 = {
  96         .name = "imx-uart",
  97         .id = 3,
  98         .resource = uart3,
  99         .num_resources = ARRAY_SIZE(uart3),
 100 };
 101
 102 static struct resource uart4[] = {
 103         {
 104                 .start = UART5_BASE_ADDR,
 105                 .end = UART5_BASE_ADDR + 0x0B5,
 106                 .flags = IORESOURCE_MEM,
 107         }, {
 108                 .start = MXC_INT_UART5,
 109                 .end = MXC_INT_UART5,
 110                 .flags = IORESOURCE_IRQ,
 111         },
 112 };
 113
 114 static struct platform_device mxc_uart_device4 = {
 115         .name = "imx-uart",
 116         .id = 4,
 117         .resource = uart4,
 118         .num_resources = ARRAY_SIZE(uart4),
 119 };
 120
 121 static struct resource uart5[] = {
 122         {
 123                 .start = UART6_BASE_ADDR,
 124                 .end = UART6_BASE_ADDR + 0x0B5,
 125                 .flags = IORESOURCE_MEM,
 126         }, {
 127                 .start = MXC_INT_UART6,
 128                 .end = MXC_INT_UART6,
 129                 .flags = IORESOURCE_IRQ,
 130         },
 131 };
 132
 133 static struct platform_device mxc_uart_device5 = {
 134         .name = "imx-uart",
 135         .id = 5,
 136         .resource = uart5,
 137         .num_resources = ARRAY_SIZE(uart5),
 138 };
 139
 140 /*
 141  * Register only those UARTs that physically exists
 142  */
 143 int __init imx_init_uart(int uart_no, struct imxuart_platform_data *pdata)
 144 {
 145         switch (uart_no) {
 146         case 0:
 147                 mxc_uart_device0.dev.platform_data = pdata;
 148                 platform_device_register(&mxc_uart_device0);
 149                 break;
 150         case 1:
 151                 mxc_uart_device1.dev.platform_data = pdata;
 152                 platform_device_register(&mxc_uart_device1);
 153                 break;
 154 #ifndef CONFIG_MXC_IRDA
 155         case 2:
 156                 mxc_uart_device2.dev.platform_data = pdata;
 157                 platform_device_register(&mxc_uart_device2);
 158                 break;
 159 #endif
 160         case 3:
 161                 mxc_uart_device3.dev.platform_data = pdata;
 162                 platform_device_register(&mxc_uart_device3);
 163                 break;
 164         case 4:
 165                 mxc_uart_device4.dev.platform_data = pdata;
 166                 platform_device_register(&mxc_uart_device4);
 167                 break;
 168         case 5:
 169                 mxc_uart_device5.dev.platform_data = pdata;
 170                 platform_device_register(&mxc_uart_device5);
 171                 break;
 172         default:
 173                 return -ENODEV;
 174         }
 175
 176         return 0;
 177 }