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/arch/arm/mach-iop32x/em7210.c

https://github.com/AICP/kernel_google_msm
C | 212 lines | 146 code | 29 blank | 37 comment | 3 complexity | c907ad709eb5cdded1e23d33896d499b MD5 | raw file
  1/*
  2 * arch/arm/mach-iop32x/em7210.c
  3 *
  4 * Board support code for the Lanner EM7210 platforms.
  5 *
  6 * Based on arch/arm/mach-iop32x/iq31244.c file.
  7 *
  8 * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
  9 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of the GNU General Public License version 2 as
 12 * published by the Free Software Foundation.
 13 *
 14 */
 15
 16#include <linux/mm.h>
 17#include <linux/init.h>
 18#include <linux/kernel.h>
 19#include <linux/pci.h>
 20#include <linux/pm.h>
 21#include <linux/serial_core.h>
 22#include <linux/serial_8250.h>
 23#include <linux/mtd/physmap.h>
 24#include <linux/platform_device.h>
 25#include <linux/i2c.h>
 26#include <mach/hardware.h>
 27#include <linux/io.h>
 28#include <linux/irq.h>
 29#include <asm/mach/arch.h>
 30#include <asm/mach/map.h>
 31#include <asm/mach/pci.h>
 32#include <asm/mach/time.h>
 33#include <asm/mach-types.h>
 34#include <mach/time.h>
 35
 36static void __init em7210_timer_init(void)
 37{
 38	/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
 39	/* 33.333 MHz crystal.                                */
 40	iop_init_time(200000000);
 41}
 42
 43static struct sys_timer em7210_timer = {
 44	.init		= em7210_timer_init,
 45};
 46
 47/*
 48 * EM7210 RTC
 49 */
 50static struct i2c_board_info __initdata em7210_i2c_devices[] = {
 51	{
 52		I2C_BOARD_INFO("rs5c372a", 0x32),
 53	},
 54};
 55
 56/*
 57 * EM7210 I/O
 58 */
 59static struct map_desc em7210_io_desc[] __initdata = {
 60	{	/* on-board devices */
 61		.virtual	= IQ31244_UART,
 62		.pfn		= __phys_to_pfn(IQ31244_UART),
 63		.length		= 0x00100000,
 64		.type		= MT_DEVICE,
 65	},
 66};
 67
 68void __init em7210_map_io(void)
 69{
 70	iop3xx_map_io();
 71	iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
 72}
 73
 74
 75/*
 76 * EM7210 PCI
 77 */
 78#define INTA	IRQ_IOP32X_XINT0
 79#define INTB	IRQ_IOP32X_XINT1
 80#define INTC	IRQ_IOP32X_XINT2
 81#define INTD	IRQ_IOP32X_XINT3
 82
 83static int __init
 84em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 85{
 86	static int pci_irq_table[][4] = {
 87		/*
 88		 * PCI IDSEL/INTPIN->INTLINE
 89		 * A       B       C       D
 90		 */
 91		{INTB, INTB, INTB, INTB}, /* console / uart */
 92		{INTA, INTA, INTA, INTA}, /* 1st 82541      */
 93		{INTD, INTD, INTD, INTD}, /* 2nd 82541      */
 94		{INTC, INTC, INTC, INTC}, /* GD31244        */
 95		{INTD, INTA, INTA, INTA}, /* mini-PCI       */
 96		{INTD, INTC, INTA, INTA}, /* NEC USB        */
 97	};
 98
 99	if (pin < 1 || pin > 4)
100		return -1;
101
102	return pci_irq_table[slot % 6][pin - 1];
103}
104
105static struct hw_pci em7210_pci __initdata = {
106	.swizzle	= pci_std_swizzle,
107	.nr_controllers = 1,
108	.setup		= iop3xx_pci_setup,
109	.preinit	= iop3xx_pci_preinit,
110	.scan		= iop3xx_pci_scan_bus,
111	.map_irq	= em7210_pci_map_irq,
112};
113
114static int __init em7210_pci_init(void)
115{
116	if (machine_is_em7210())
117		pci_common_init(&em7210_pci);
118
119	return 0;
120}
121
122subsys_initcall(em7210_pci_init);
123
124
125/*
126 * EM7210 Flash
127 */
128static struct physmap_flash_data em7210_flash_data = {
129	.width		= 2,
130};
131
132static struct resource em7210_flash_resource = {
133	.start		= 0xf0000000,
134	.end		= 0xf1ffffff,
135	.flags		= IORESOURCE_MEM,
136};
137
138static struct platform_device em7210_flash_device = {
139	.name		= "physmap-flash",
140	.id		= 0,
141	.dev		= {
142		.platform_data	= &em7210_flash_data,
143	},
144	.num_resources	= 1,
145	.resource	= &em7210_flash_resource,
146};
147
148
149/*
150 * EM7210 UART
151 * The physical address of the serial port is 0xfe800000,
152 * so it can be used for physical and virtual address.
153 */
154static struct plat_serial8250_port em7210_serial_port[] = {
155	{
156		.mapbase	= IQ31244_UART,
157		.membase	= (char *)IQ31244_UART,
158		.irq		= IRQ_IOP32X_XINT1,
159		.flags		= UPF_SKIP_TEST,
160		.iotype		= UPIO_MEM,
161		.regshift	= 0,
162		.uartclk	= 1843200,
163	},
164	{ },
165};
166
167static struct resource em7210_uart_resource = {
168	.start		= IQ31244_UART,
169	.end		= IQ31244_UART + 7,
170	.flags		= IORESOURCE_MEM,
171};
172
173static struct platform_device em7210_serial_device = {
174	.name		= "serial8250",
175	.id		= PLAT8250_DEV_PLATFORM,
176	.dev		= {
177		.platform_data		= em7210_serial_port,
178	},
179	.num_resources	= 1,
180	.resource	= &em7210_uart_resource,
181};
182
183void em7210_power_off(void)
184{
185	*IOP3XX_GPOE &= 0xfe;
186	*IOP3XX_GPOD |= 0x01;
187}
188
189static void __init em7210_init_machine(void)
190{
191	platform_device_register(&em7210_serial_device);
192	platform_device_register(&iop3xx_i2c0_device);
193	platform_device_register(&iop3xx_i2c1_device);
194	platform_device_register(&em7210_flash_device);
195	platform_device_register(&iop3xx_dma_0_channel);
196	platform_device_register(&iop3xx_dma_1_channel);
197
198	i2c_register_board_info(0, em7210_i2c_devices,
199		ARRAY_SIZE(em7210_i2c_devices));
200
201
202	pm_power_off = em7210_power_off;
203}
204
205MACHINE_START(EM7210, "Lanner EM7210")
206	.atag_offset	= 0x100,
207	.map_io		= em7210_map_io,
208	.init_irq	= iop32x_init_irq,
209	.timer		= &em7210_timer,
210	.init_machine	= em7210_init_machine,
211	.restart	= iop3xx_restart,
212MACHINE_END