1/* 2 * Common devices definition for Gemini 3 * 4 * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> 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 version 2 as 8 * published by the Free Software Foundation. 9 */ 10#include <linux/kernel.h> 11#include <linux/init.h> 12#include <linux/io.h> 13#include <linux/platform_device.h> 14#include <linux/serial_8250.h> 15#include <linux/mtd/physmap.h> 16 17#include <mach/irqs.h> 18#include <mach/hardware.h> 19#include <mach/global_reg.h> 20 21static struct plat_serial8250_port serial_platform_data[] = { 22 { 23 .membase = (void *)IO_ADDRESS(GEMINI_UART_BASE), 24 .mapbase = GEMINI_UART_BASE, 25 .irq = IRQ_UART, 26 .uartclk = UART_CLK, 27 .regshift = 2, 28 .iotype = UPIO_MEM, 29 .type = PORT_16550A, 30 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE, 31 }, 32 {}, 33}; 34 35static struct platform_device serial_device = { 36 .name = "serial8250", 37 .id = PLAT8250_DEV_PLATFORM, 38 .dev = { 39 .platform_data = serial_platform_data, 40 }, 41}; 42 43int platform_register_uart(void) 44{ 45 return platform_device_register(&serial_device); 46} 47 48static struct resource flash_resource = { 49 .start = GEMINI_FLASH_BASE, 50 .flags = IORESOURCE_MEM, 51}; 52 53static struct physmap_flash_data pflash_platform_data = {}; 54 55static struct platform_device pflash_device = { 56 .name = "physmap-flash", 57 .id = 0, 58 .dev = { 59 .platform_data = &pflash_platform_data, 60 }, 61 .resource = &flash_resource, 62 .num_resources = 1, 63}; 64 65int platform_register_pflash(unsigned int size, struct mtd_partition *parts, 66 unsigned int nr_parts) 67{ 68 unsigned int reg; 69 70 reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS); 71 72 if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL) 73 return -ENXIO; 74 75 if (reg & FLASH_WIDTH_16BIT) 76 pflash_platform_data.width = 2; 77 else 78 pflash_platform_data.width = 1; 79 80 /* enable parallel flash pins and disable others */ 81 reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); 82 reg &= ~PFLASH_PADS_DISABLE; 83 reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE; 84 __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); 85 86 flash_resource.end = flash_resource.start + size - 1; 87 88 pflash_platform_data.parts = parts; 89 pflash_platform_data.nr_parts = nr_parts; 90 91 return platform_device_register(&pflash_device); 92} 93