1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * GPR board platform device registration (Au1550)
5 * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
8 #include <linux/delay.h>
9 #include <linux/init.h>
10 #include <linux/interrupt.h>
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/mtd/physmap.h>
16 #include <linux/leds.h>
17 #include <linux/gpio.h>
18 #include <linux/i2c.h>
19 #include <linux/platform_data/i2c-gpio.h>
20 #include <linux/gpio/machine.h>
21 #include <asm/bootinfo.h>
23 #include <asm/reboot.h>
24 #include <asm/setup.h>
25 #include <asm/mach-au1x00/au1000.h>
26 #include <asm/mach-au1x00/gpio-au1000.h>
29 const char *get_system_type(void)
34 void prom_putchar(char c)
36 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
39 static void gpr_reset(char *c)
41 /* switch System-LED to orange (red# and green# on) */
42 alchemy_gpio_direction_output(4, 0);
43 alchemy_gpio_direction_output(5, 0);
45 /* trigger watchdog to reset board in 200ms */
46 printk(KERN_EMERG "Triggering watchdog soft reset...\n");
47 raw_local_irq_disable();
48 alchemy_gpio_direction_output(1, 0);
50 alchemy_gpio_set_value(1, 1);
55 static void gpr_power_off(void)
61 void __init board_setup(void)
63 printk(KERN_INFO "Trapeze ITS GPR board\n");
65 pm_power_off = gpr_power_off;
66 _machine_halt = gpr_power_off;
67 _machine_restart = gpr_reset;
70 alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
71 alchemy_uart_enable(AU1000_UART1_PHYS_ADDR);
73 /* Take away Reset of UMTS-card */
74 alchemy_gpio_direction_output(215, 1);
80 static struct resource gpr_wdt_resource[] = {
84 .name = "gpr-adm6320-wdt",
85 .flags = IORESOURCE_IRQ,
89 static struct platform_device gpr_wdt_device = {
90 .name = "adm6320-wdt",
92 .num_resources = ARRAY_SIZE(gpr_wdt_resource),
93 .resource = gpr_wdt_resource,
99 * 0x00000000-0x00200000 : "kernel"
100 * 0x00200000-0x00a00000 : "rootfs"
101 * 0x01d00000-0x01f00000 : "config"
102 * 0x01c00000-0x01d00000 : "yamon"
103 * 0x01d00000-0x01d40000 : "yamon env vars"
104 * 0x00000000-0x00a00000 : "kernel+rootfs"
106 static struct mtd_partition gpr_mtd_partitions[] = {
115 .offset = MTDPART_OFS_APPEND,
116 .mask_flags = MTD_WRITEABLE,
121 .offset = 0x01d00000,
126 .offset = 0x01c00000,
129 .name = "yamon env vars",
131 .offset = MTDPART_OFS_APPEND,
134 .name = "kernel+rootfs",
140 static struct physmap_flash_data gpr_flash_data = {
142 .nr_parts = ARRAY_SIZE(gpr_mtd_partitions),
143 .parts = gpr_mtd_partitions,
146 static struct resource gpr_mtd_resource = {
149 .flags = IORESOURCE_MEM,
152 static struct platform_device gpr_mtd_device = {
153 .name = "physmap-flash",
155 .platform_data = &gpr_flash_data,
158 .resource = &gpr_mtd_resource,
164 static const struct gpio_led gpr_gpio_leds[] = {
177 static struct gpio_led_platform_data gpr_led_data = {
178 .num_leds = ARRAY_SIZE(gpr_gpio_leds),
179 .leds = gpr_gpio_leds,
182 static struct platform_device gpr_led_devices = {
186 .platform_data = &gpr_led_data,
193 static struct gpiod_lookup_table gpr_i2c_gpiod_table = {
194 .dev_id = "i2c-gpio",
197 * This should be on "GPIO2" which has base at 200 so
198 * the global numbers 209 and 210 should correspond to
199 * local offsets 9 and 10.
201 GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0,
203 GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1,
208 static struct i2c_gpio_platform_data gpr_i2c_data = {
210 * The open drain mode is hardwired somewhere or an electrical
211 * property of the alchemy GPIO controller.
213 .sda_is_open_drain = 1,
214 .scl_is_open_drain = 1,
215 .udelay = 2, /* ~100 kHz */
219 static struct platform_device gpr_i2c_device = {
222 .dev.platform_data = &gpr_i2c_data,
225 static struct i2c_board_info gpr_i2c_info[] __initdata = {
227 I2C_BOARD_INFO("lm83", 0x18),
233 static struct resource alchemy_pci_host_res[] = {
235 .start = AU1500_PCI_PHYS_ADDR,
236 .end = AU1500_PCI_PHYS_ADDR + 0xfff,
237 .flags = IORESOURCE_MEM,
241 static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
243 if ((slot == 0) && (pin == 1))
244 return AU1550_PCI_INTA;
245 else if ((slot == 0) && (pin == 2))
246 return AU1550_PCI_INTB;
251 static struct alchemy_pci_platdata gpr_pci_pd = {
252 .board_map_irq = gpr_map_pci_irq,
253 .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
255 #if defined(__MIPSEB__)
256 PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
262 static struct platform_device gpr_pci_host_dev = {
263 .dev.platform_data = &gpr_pci_pd,
264 .name = "alchemy-pci",
266 .num_resources = ARRAY_SIZE(alchemy_pci_host_res),
267 .resource = alchemy_pci_host_res,
270 static struct platform_device *gpr_devices[] __initdata = {
277 static int __init gpr_pci_init(void)
279 return platform_device_register(&gpr_pci_host_dev);
281 /* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
282 arch_initcall(gpr_pci_init);
285 static int __init gpr_dev_init(void)
287 gpiod_add_lookup_table(&gpr_i2c_gpiod_table);
288 i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
290 return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
292 device_initcall(gpr_dev_init);