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

https://github.com/AICP/kernel_google_msm
C | 216 lines | 155 code | 30 blank | 31 comment | 3 complexity | 9405b74d71aebd888f3f8f87b7db37bf MD5 | raw file
  1/*
  2 * arch/arm/mach-iop32x/glantank.c
  3 *
  4 * Board support code for the GLAN Tank.
  5 *
  6 * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
  7 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
  8 *
  9 * This program is free software; you can redistribute it and/or modify it
 10 * under the terms of the GNU General Public License as published by the
 11 * Free Software Foundation; either version 2 of the License, or (at your
 12 * option) any later version.
 13 */
 14
 15#include <linux/mm.h>
 16#include <linux/init.h>
 17#include <linux/f75375s.h>
 18#include <linux/kernel.h>
 19#include <linux/pci.h>
 20#include <linux/pm.h>
 21#include <linux/string.h>
 22#include <linux/serial_core.h>
 23#include <linux/serial_8250.h>
 24#include <linux/mtd/physmap.h>
 25#include <linux/i2c.h>
 26#include <linux/platform_device.h>
 27#include <linux/io.h>
 28#include <mach/hardware.h>
 29#include <asm/irq.h>
 30#include <asm/mach/arch.h>
 31#include <asm/mach/map.h>
 32#include <asm/mach/pci.h>
 33#include <asm/mach/time.h>
 34#include <asm/mach-types.h>
 35#include <asm/page.h>
 36#include <mach/time.h>
 37
 38/*
 39 * GLAN Tank timer tick configuration.
 40 */
 41static void __init glantank_timer_init(void)
 42{
 43	/* 33.333 MHz crystal.  */
 44	iop_init_time(200000000);
 45}
 46
 47static struct sys_timer glantank_timer = {
 48	.init		= glantank_timer_init,
 49};
 50
 51
 52/*
 53 * GLAN Tank I/O.
 54 */
 55static struct map_desc glantank_io_desc[] __initdata = {
 56	{	/* on-board devices */
 57		.virtual	= GLANTANK_UART,
 58		.pfn		= __phys_to_pfn(GLANTANK_UART),
 59		.length		= 0x00100000,
 60		.type		= MT_DEVICE
 61	},
 62};
 63
 64void __init glantank_map_io(void)
 65{
 66	iop3xx_map_io();
 67	iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
 68}
 69
 70
 71/*
 72 * GLAN Tank PCI.
 73 */
 74#define INTA	IRQ_IOP32X_XINT0
 75#define INTB	IRQ_IOP32X_XINT1
 76#define INTC	IRQ_IOP32X_XINT2
 77#define INTD	IRQ_IOP32X_XINT3
 78
 79static int __init
 80glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 81{
 82	static int pci_irq_table[][4] = {
 83		/*
 84		 * PCI IDSEL/INTPIN->INTLINE
 85		 * A       B       C       D
 86		 */
 87		{INTD, INTD, INTD, INTD}, /* UART (8250) */
 88		{INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
 89		{INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
 90		{INTC, INTC, INTC, INTC}, /* USB (NEC) */
 91	};
 92
 93	BUG_ON(pin < 1 || pin > 4);
 94
 95	return pci_irq_table[slot % 4][pin - 1];
 96}
 97
 98static struct hw_pci glantank_pci __initdata = {
 99	.swizzle	= pci_std_swizzle,
100	.nr_controllers = 1,
101	.setup		= iop3xx_pci_setup,
102	.preinit	= iop3xx_pci_preinit,
103	.scan		= iop3xx_pci_scan_bus,
104	.map_irq	= glantank_pci_map_irq,
105};
106
107static int __init glantank_pci_init(void)
108{
109	if (machine_is_glantank())
110		pci_common_init(&glantank_pci);
111
112	return 0;
113}
114
115subsys_initcall(glantank_pci_init);
116
117
118/*
119 * GLAN Tank machine initialization.
120 */
121static struct physmap_flash_data glantank_flash_data = {
122	.width		= 2,
123};
124
125static struct resource glantank_flash_resource = {
126	.start		= 0xf0000000,
127	.end		= 0xf007ffff,
128	.flags		= IORESOURCE_MEM,
129};
130
131static struct platform_device glantank_flash_device = {
132	.name		= "physmap-flash",
133	.id		= 0,
134	.dev		= {
135		.platform_data	= &glantank_flash_data,
136	},
137	.num_resources	= 1,
138	.resource	= &glantank_flash_resource,
139};
140
141static struct plat_serial8250_port glantank_serial_port[] = {
142	{
143		.mapbase	= GLANTANK_UART,
144		.membase	= (char *)GLANTANK_UART,
145		.irq		= IRQ_IOP32X_XINT3,
146		.flags		= UPF_SKIP_TEST,
147		.iotype		= UPIO_MEM,
148		.regshift	= 0,
149		.uartclk	= 1843200,
150	},
151	{ },
152};
153
154static struct resource glantank_uart_resource = {
155	.start		= GLANTANK_UART,
156	.end		= GLANTANK_UART + 7,
157	.flags		= IORESOURCE_MEM,
158};
159
160static struct platform_device glantank_serial_device = {
161	.name		= "serial8250",
162	.id		= PLAT8250_DEV_PLATFORM,
163	.dev		= {
164		.platform_data		= glantank_serial_port,
165	},
166	.num_resources	= 1,
167	.resource	= &glantank_uart_resource,
168};
169
170static struct f75375s_platform_data glantank_f75375s = {
171	.pwm		= { 255, 255 },
172	.pwm_enable	= { 0, 0 },
173};
174
175static struct i2c_board_info __initdata glantank_i2c_devices[] = {
176	{
177		I2C_BOARD_INFO("rs5c372a", 0x32),
178	},
179	{
180		I2C_BOARD_INFO("f75375", 0x2e),
181		.platform_data = &glantank_f75375s,
182	},
183};
184
185static void glantank_power_off(void)
186{
187	__raw_writeb(0x01, 0xfe8d0004);
188
189	while (1)
190		;
191}
192
193static void __init glantank_init_machine(void)
194{
195	platform_device_register(&iop3xx_i2c0_device);
196	platform_device_register(&iop3xx_i2c1_device);
197	platform_device_register(&glantank_flash_device);
198	platform_device_register(&glantank_serial_device);
199	platform_device_register(&iop3xx_dma_0_channel);
200	platform_device_register(&iop3xx_dma_1_channel);
201
202	i2c_register_board_info(0, glantank_i2c_devices,
203		ARRAY_SIZE(glantank_i2c_devices));
204
205	pm_power_off = glantank_power_off;
206}
207
208MACHINE_START(GLANTANK, "GLAN Tank")
209	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
210	.atag_offset	= 0x100,
211	.map_io		= glantank_map_io,
212	.init_irq	= iop32x_init_irq,
213	.timer		= &glantank_timer,
214	.init_machine	= glantank_init_machine,
215	.restart	= iop3xx_restart,
216MACHINE_END