| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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 | |
| 29 | static struct resource lasat_serial_res[2] __initdata; |
| 30 | |
| 31 | static 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 | |
| 40 | static __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 | |
| 88 | err_free_device: |
| 89 | platform_device_put(pdev); |
| 90 | |
| 91 | return retval; |
| 92 | } |
| 93 | device_initcall(lasat_uart_add); |