1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * arch/arm/mach-iop32x/glantank.c
  4 *
  5 * Board support code for the GLAN Tank.
  6 *
  7 * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
  8 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
  9 */
 10
 11#include <linux/mm.h>
 12#include <linux/init.h>
 13#include <linux/f75375s.h>
 14#include <linux/kernel.h>
 15#include <linux/pci.h>
 16#include <linux/pm.h>
 17#include <linux/string.h>
 18#include <linux/serial_core.h>
 19#include <linux/serial_8250.h>
 20#include <linux/mtd/physmap.h>
 21#include <linux/i2c.h>
 22#include <linux/platform_device.h>
 23#include <linux/io.h>
 24#include <linux/gpio/machine.h>
 25#include <asm/irq.h>
 26#include <asm/mach/arch.h>
 27#include <asm/mach/map.h>
 28#include <asm/mach/pci.h>
 29#include <asm/mach/time.h>
 30#include <asm/mach-types.h>
 31#include <asm/page.h>
 32
 33#include "hardware.h"
 34#include "gpio-iop32x.h"
 35#include "irqs.h"
 36
 37/*
 38 * GLAN Tank timer tick configuration.
 39 */
 40static void __init glantank_timer_init(void)
 41{
 42	/* 33.333 MHz crystal.  */
 43	iop_init_time(200000000);
 44}
 45
 46
 47/*
 48 * GLAN Tank I/O.
 49 */
 50static struct map_desc glantank_io_desc[] __initdata = {
 51	{	/* on-board devices */
 52		.virtual	= GLANTANK_UART,
 53		.pfn		= __phys_to_pfn(GLANTANK_UART),
 54		.length		= 0x00100000,
 55		.type		= MT_DEVICE
 56	},
 57};
 58
 59void __init glantank_map_io(void)
 60{
 61	iop3xx_map_io();
 62	iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
 63}
 64
 65
 66/*
 67 * GLAN Tank PCI.
 68 */
 69#define INTA	IRQ_IOP32X_XINT0
 70#define INTB	IRQ_IOP32X_XINT1
 71#define INTC	IRQ_IOP32X_XINT2
 72#define INTD	IRQ_IOP32X_XINT3
 73
 74static int __init
 75glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 76{
 77	static int pci_irq_table[][4] = {
 78		/*
 79		 * PCI IDSEL/INTPIN->INTLINE
 80		 * A       B       C       D
 81		 */
 82		{INTD, INTD, INTD, INTD}, /* UART (8250) */
 83		{INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
 84		{INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
 85		{INTC, INTC, INTC, INTC}, /* USB (NEC) */
 86	};
 87
 88	BUG_ON(pin < 1 || pin > 4);
 89
 90	return pci_irq_table[slot % 4][pin - 1];
 91}
 92
 93static struct hw_pci glantank_pci __initdata = {
 94	.nr_controllers = 1,
 95	.ops		= &iop3xx_ops,
 96	.setup		= iop3xx_pci_setup,
 97	.preinit	= iop3xx_pci_preinit,
 98	.map_irq	= glantank_pci_map_irq,
 99};
100
101static int __init glantank_pci_init(void)
102{
103	if (machine_is_glantank())
104		pci_common_init(&glantank_pci);
105
106	return 0;
107}
108
109subsys_initcall(glantank_pci_init);
110
111
112/*
113 * GLAN Tank machine initialization.
114 */
115static struct physmap_flash_data glantank_flash_data = {
116	.width		= 2,
117};
118
119static struct resource glantank_flash_resource = {
120	.start		= 0xf0000000,
121	.end		= 0xf007ffff,
122	.flags		= IORESOURCE_MEM,
123};
124
125static struct platform_device glantank_flash_device = {
126	.name		= "physmap-flash",
127	.id		= 0,
128	.dev		= {
129		.platform_data	= &glantank_flash_data,
130	},
131	.num_resources	= 1,
132	.resource	= &glantank_flash_resource,
133};
134
135static struct plat_serial8250_port glantank_serial_port[] = {
136	{
137		.mapbase	= GLANTANK_UART,
138		.membase	= (char *)GLANTANK_UART,
139		.irq		= IRQ_IOP32X_XINT3,
140		.flags		= UPF_SKIP_TEST,
141		.iotype		= UPIO_MEM,
142		.regshift	= 0,
143		.uartclk	= 1843200,
144	},
145	{ },
146};
147
148static struct resource glantank_uart_resource = {
149	.start		= GLANTANK_UART,
150	.end		= GLANTANK_UART + 7,
151	.flags		= IORESOURCE_MEM,
152};
153
154static struct platform_device glantank_serial_device = {
155	.name		= "serial8250",
156	.id		= PLAT8250_DEV_PLATFORM,
157	.dev		= {
158		.platform_data		= glantank_serial_port,
159	},
160	.num_resources	= 1,
161	.resource	= &glantank_uart_resource,
162};
163
164static struct f75375s_platform_data glantank_f75375s = {
165	.pwm		= { 255, 255 },
166	.pwm_enable	= { 0, 0 },
167};
168
169static struct i2c_board_info __initdata glantank_i2c_devices[] = {
170	{
171		I2C_BOARD_INFO("rs5c372a", 0x32),
172	},
173	{
174		I2C_BOARD_INFO("f75375", 0x2e),
175		.platform_data = &glantank_f75375s,
176	},
177};
178
179static void glantank_power_off(void)
180{
181	__raw_writeb(0x01, IOMEM(0xfe8d0004));
182
183	while (1)
184		;
185}
186
187static void __init glantank_init_machine(void)
188{
189	register_iop32x_gpio();
190	gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
191	gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
192	platform_device_register(&iop3xx_i2c0_device);
193	platform_device_register(&iop3xx_i2c1_device);
194	platform_device_register(&glantank_flash_device);
195	platform_device_register(&glantank_serial_device);
196	platform_device_register(&iop3xx_dma_0_channel);
197	platform_device_register(&iop3xx_dma_1_channel);
198
199	i2c_register_board_info(0, glantank_i2c_devices,
200		ARRAY_SIZE(glantank_i2c_devices));
201
202	pm_power_off = glantank_power_off;
203}
204
205MACHINE_START(GLANTANK, "GLAN Tank")
206	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
207	.atag_offset	= 0x100,
208	.map_io		= glantank_map_io,
209	.init_irq	= iop32x_init_irq,
210	.init_time	= glantank_timer_init,
211	.init_machine	= glantank_init_machine,
212	.restart	= iop3xx_restart,
213MACHINE_END