1/* 2 * Registration of Lasat UART platform device. 3 * 4 * Copyright (C) 2007 Brian Murphy <brian@murphy.dk> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20#include <linux/errno.h> 21#include <linux/init.h> 22#include <linux/ioport.h> 23#include <linux/platform_device.h> 24#include <linux/serial_8250.h> 25 26#include <asm/lasat/lasat.h> 27#include <asm/lasat/serial.h> 28 29static struct resource lasat_serial_res[2] __initdata; 30 31static struct plat_serial8250_port lasat_serial8250_port[] = { 32 { 33 .iotype = UPIO_MEM, 34 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | 35 UPF_SKIP_TEST, 36 }, 37 {}, 38}; 39 40static __init int lasat_uart_add(void) 41{ 42 struct platform_device *pdev; 43 int retval; 44 45 pdev = platform_device_alloc("serial8250", -1); 46 if (!pdev) 47 return -ENOMEM; 48 49 if (!IS_LASAT_200()) { 50 lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100); 51 lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1; 52 lasat_serial_res[0].flags = IORESOURCE_MEM; 53 lasat_serial_res[1].start = LASATINT_UART_100; 54 lasat_serial_res[1].end = LASATINT_UART_100; 55 lasat_serial_res[1].flags = IORESOURCE_IRQ; 56 57 lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100; 58 lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16; 59 lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100; 60 lasat_serial8250_port[0].irq = LASATINT_UART_100; 61 } else { 62 lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200); 63 lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1; 64 lasat_serial_res[0].flags = IORESOURCE_MEM; 65 lasat_serial_res[1].start = LASATINT_UART_200; 66 lasat_serial_res[1].end = LASATINT_UART_200; 67 lasat_serial_res[1].flags = IORESOURCE_IRQ; 68 69 lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200; 70 lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16; 71 lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200; 72 lasat_serial8250_port[0].irq = LASATINT_UART_200; 73 } 74 75 pdev->id = PLAT8250_DEV_PLATFORM; 76 pdev->dev.platform_data = lasat_serial8250_port; 77 78 retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res)); 79 if (retval) 80 goto err_free_device; 81 82 retval = platform_device_add(pdev); 83 if (retval) 84 goto err_free_device; 85 86 return 0; 87 88err_free_device: 89 platform_device_put(pdev); 90 91 return retval; 92} 93device_initcall(lasat_uart_add); 94