1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2006, 07 MIPS Technologies, Inc. 7 * written by Ralf Baechle (ralf@linux-mips.org) 8 * written by Ralf Baechle <ralf@linux-mips.org> 9 * 10 * Copyright (C) 2008 Wind River Systems, Inc. 11 * updated by Tiejun Chen <tiejun.chen@windriver.com> 12 * 13 * 1. Probe driver for the Malta's UART ports: 14 * 15 * o 2 ports in the SMC SuperIO 16 * o 1 port in the CBUS UART, a discrete 16550 which normally is only used 17 * for bringups. 18 * 19 * We don't use 8250_platform.c on Malta as it would result in the CBUS 20 * UART becoming ttyS0. 21 * 22 * 2. Register RTC-CMOS platform device on Malta. 23 */ 24#include <linux/init.h> 25#include <linux/serial_8250.h> 26#include <linux/mc146818rtc.h> 27#include <linux/module.h> 28#include <linux/mtd/partitions.h> 29#include <linux/mtd/physmap.h> 30#include <linux/platform_device.h> 31#include <mtd/mtd-abi.h> 32 33#define SMC_PORT(base, int) \ 34{ \ 35 .iobase = base, \ 36 .irq = int, \ 37 .uartclk = 1843200, \ 38 .iotype = UPIO_PORT, \ 39 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ 40 .regshift = 0, \ 41} 42 43#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) 44 45static struct plat_serial8250_port uart8250_data[] = { 46 SMC_PORT(0x3F8, 4), 47 SMC_PORT(0x2F8, 3), 48 { 49 .mapbase = 0x1f000900, /* The CBUS UART */ 50 .irq = MIPS_CPU_IRQ_BASE + 2, 51 .uartclk = 3686400, /* Twice the usual clk! */ 52 .iotype = UPIO_MEM32, 53 .flags = CBUS_UART_FLAGS, 54 .regshift = 3, 55 }, 56 { }, 57}; 58 59static struct platform_device malta_uart8250_device = { 60 .name = "serial8250", 61 .id = PLAT8250_DEV_PLATFORM, 62 .dev = { 63 .platform_data = uart8250_data, 64 }, 65}; 66 67struct resource malta_rtc_resources[] = { 68 { 69 .start = RTC_PORT(0), 70 .end = RTC_PORT(7), 71 .flags = IORESOURCE_IO, 72 }, { 73 .start = RTC_IRQ, 74 .end = RTC_IRQ, 75 .flags = IORESOURCE_IRQ, 76 } 77}; 78 79static struct platform_device malta_rtc_device = { 80 .name = "rtc_cmos", 81 .id = -1, 82 .resource = malta_rtc_resources, 83 .num_resources = ARRAY_SIZE(malta_rtc_resources), 84}; 85 86static struct mtd_partition malta_mtd_partitions[] = { 87 { 88 .name = "YAMON", 89 .offset = 0x0, 90 .size = 0x100000, 91 .mask_flags = MTD_WRITEABLE 92 }, { 93 .name = "User FS", 94 .offset = 0x100000, 95 .size = 0x2e0000 96 }, { 97 .name = "Board Config", 98 .offset = 0x3e0000, 99 .size = 0x020000, 100 .mask_flags = MTD_WRITEABLE 101 } 102}; 103 104static struct physmap_flash_data malta_flash_data = { 105 .width = 4, 106 .nr_parts = ARRAY_SIZE(malta_mtd_partitions), 107 .parts = malta_mtd_partitions 108}; 109 110static struct resource malta_flash_resource = { 111 .start = 0x1e000000, 112 .end = 0x1e3fffff, 113 .flags = IORESOURCE_MEM 114}; 115 116static struct platform_device malta_flash_device = { 117 .name = "physmap-flash", 118 .id = 0, 119 .dev = { 120 .platform_data = &malta_flash_data, 121 }, 122 .num_resources = 1, 123 .resource = &malta_flash_resource, 124}; 125 126static struct platform_device *malta_devices[] __initdata = { 127 &malta_uart8250_device, 128 &malta_rtc_device, 129 &malta_flash_device, 130}; 131 132static int __init malta_add_devices(void) 133{ 134 int err; 135 136 err = platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices)); 137 if (err) 138 return err; 139 140 /* 141 * Set RTC to BCD mode to support current alarm code. 142 */ 143 CMOS_WRITE(CMOS_READ(RTC_CONTROL) & ~RTC_DM_BINARY, RTC_CONTROL); 144 145 return 0; 146} 147 148device_initcall(malta_add_devices); 149