mips/bcm63xx/dev-uart.c

0001 /*
0002  * This file is subject to the terms and conditions of the GNU General Public
0003  * License.  See the file "COPYING" in the main directory of this archive
0004  * for more details.
0005  *
0006  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
0007  */
0008
0009 #include <linux/init.h>
0010 #include <linux/kernel.h>
0011 #include <linux/platform_device.h>
0012 #include <bcm63xx_cpu.h>
0013
0014 static struct resource uart0_resources[] = {
0015     {
0016         /* start & end filled at runtime */
0017         .flags      = IORESOURCE_MEM,
0018     },
0019     {
0020         /* start filled at runtime */
0021         .flags      = IORESOURCE_IRQ,
0022     },
0023 };
0024
0025 static struct resource uart1_resources[] = {
0026     {
0027         /* start & end filled at runtime */
0028         .flags      = IORESOURCE_MEM,
0029     },
0030     {
0031         /* start filled at runtime */
0032         .flags      = IORESOURCE_IRQ,
0033     },
0034 };
0035
0036 static struct platform_device bcm63xx_uart_devices[] = {
0037     {
0038         .name       = "bcm63xx_uart",
0039         .id     = 0,
0040         .num_resources  = ARRAY_SIZE(uart0_resources),
0041         .resource   = uart0_resources,
0042     },
0043
0044     {
0045         .name       = "bcm63xx_uart",
0046         .id     = 1,
0047         .num_resources  = ARRAY_SIZE(uart1_resources),
0048         .resource   = uart1_resources,
0049     }
0050 };
0051
0052 int __init bcm63xx_uart_register(unsigned int id)
0053 {
0054     if (id >= ARRAY_SIZE(bcm63xx_uart_devices))
0055         return -ENODEV;
0056
0057     if (id == 1 && (!BCMCPU_IS_3368() && !BCMCPU_IS_6358() &&
0058         !BCMCPU_IS_6368()))
0059         return -ENODEV;
0060
0061     if (id == 0) {
0062         uart0_resources[0].start = bcm63xx_regset_address(RSET_UART0);
0063         uart0_resources[0].end = uart0_resources[0].start +
0064             RSET_UART_SIZE - 1;
0065         uart0_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
0066     }
0067
0068     if (id == 1) {
0069         uart1_resources[0].start = bcm63xx_regset_address(RSET_UART1);
0070         uart1_resources[0].end = uart1_resources[0].start +
0071             RSET_UART_SIZE - 1;
0072         uart1_resources[1].start = bcm63xx_get_irq_number(IRQ_UART1);
0073     }
0074
0075     return platform_device_register(&bcm63xx_uart_devices[id]);
0076 }