1 /* 2 * Registration of Cobalt UART platform device. 3 * 4 * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> 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 Street, 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 <cobalt.h> 27 28 static struct resource cobalt_uart_resource[] __initdata = { 29 { 30 .start = 0x1c800000, 31 .end = 0x1c800007, 32 .flags = IORESOURCE_MEM, 33 }, 34 { 35 .start = COBALT_SERIAL_IRQ, 36 .end = COBALT_SERIAL_IRQ, 37 .flags = IORESOURCE_IRQ, 38 }, 39 }; 40 41 static struct plat_serial8250_port cobalt_serial8250_port[] = { 42 { 43 .irq = COBALT_SERIAL_IRQ, 44 .uartclk = 18432000, 45 .iotype = UPIO_MEM, 46 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, 47 .mapbase = 0x1c800000, 48 }, 49 {}, 50 }; 51 52 static __init int cobalt_uart_add(void) 53 { 54 struct platform_device *pdev; 55 int retval; 56 57 /* 58 * Cobalt Qube1 has no UART. 59 */ 60 if (cobalt_board_id == COBALT_BRD_ID_QUBE1) 61 return 0; 62 63 pdev = platform_device_alloc("serial8250", -1); 64 if (!pdev) 65 return -ENOMEM; 66 67 pdev->id = PLAT8250_DEV_PLATFORM; 68 pdev->dev.platform_data = cobalt_serial8250_port; 69 70 retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource)); 71 if (retval) 72 goto err_free_device; 73 74 retval = platform_device_add(pdev); 75 if (retval) 76 goto err_free_device; 77 78 return 0; 79 80 err_free_device: 81 platform_device_put(pdev); 82 83 return retval; 84 } 85 device_initcall(cobalt_uart_add); 86