| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Registration of Lasat UART platform device. |
| 4 | * |
| 5 | * Copyright (C) 2007 Brian Murphy <brian@murphy.dk> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | #include <linux/errno.h> |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/ioport.h> |
| 10 | #include <linux/platform_device.h> |
| 11 | #include <linux/serial_8250.h> |
| 12 | |
| 13 | #include <asm/lasat/lasat.h> |
| 14 | #include <asm/lasat/serial.h> |
| 15 | |
| 16 | static struct resource lasat_serial_res[2] __initdata; |
| 17 | |
| 18 | static struct plat_serial8250_port lasat_serial8250_port[] = { |
| 19 | { |
| 20 | .iotype = UPIO_MEM, |
| 21 | .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | |
| 22 | UPF_SKIP_TEST, |
| 23 | }, |
| 24 | {}, |
| 25 | }; |
| 26 | |
| 27 | static __init int lasat_uart_add(void) |
| 28 | { |
| 29 | struct platform_device *pdev; |
| 30 | int retval; |
| 31 | |
| 32 | pdev = platform_device_alloc("serial8250", -1); |
| 33 | if (!pdev) |
| 34 | return -ENOMEM; |
| 35 | |
| 36 | if (!IS_LASAT_200()) { |
| 37 | lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100); |
| 38 | lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1; |
| 39 | lasat_serial_res[0].flags = IORESOURCE_MEM; |
| 40 | lasat_serial_res[1].start = LASATINT_UART_100; |
| 41 | lasat_serial_res[1].end = LASATINT_UART_100; |
| 42 | lasat_serial_res[1].flags = IORESOURCE_IRQ; |
| 43 | |
| 44 | lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100; |
| 45 | lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16; |
| 46 | lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100; |
| 47 | lasat_serial8250_port[0].irq = LASATINT_UART_100; |
| 48 | } else { |
| 49 | lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200); |
| 50 | lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1; |
| 51 | lasat_serial_res[0].flags = IORESOURCE_MEM; |
| 52 | lasat_serial_res[1].start = LASATINT_UART_200; |
| 53 | lasat_serial_res[1].end = LASATINT_UART_200; |
| 54 | lasat_serial_res[1].flags = IORESOURCE_IRQ; |
| 55 | |
| 56 | lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200; |
| 57 | lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16; |
| 58 | lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200; |
| 59 | lasat_serial8250_port[0].irq = LASATINT_UART_200; |
| 60 | } |
| 61 | |
| 62 | pdev->id = PLAT8250_DEV_PLATFORM; |
| 63 | pdev->dev.platform_data = lasat_serial8250_port; |
| 64 | |
| 65 | retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res)); |
| 66 | if (retval) |
| 67 | goto err_free_device; |
| 68 | |
| 69 | retval = platform_device_add(pdev); |
| 70 | if (retval) |
| 71 | goto err_free_device; |
| 72 | |
| 73 | return 0; |
| 74 | |
| 75 | err_free_device: |
| 76 | platform_device_put(pdev); |
| 77 | |
| 78 | return retval; |
| 79 | } |
| 80 | device_initcall(lasat_uart_add); |