board-mtx1.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * MTX-1 platform devices registration (Au1500)
  4 *
  5 * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
  6 */
  7
  8#include <linux/init.h>
  9#include <linux/interrupt.h>
 10#include <linux/kernel.h>
 11#include <linux/platform_device.h>
 12#include <linux/gpio/machine.h>
 13#include <linux/gpio/property.h>
 14#include <linux/input.h>
 15#include <linux/mtd/partitions.h>
 16#include <linux/mtd/physmap.h>
 17#include <mtd/mtd-abi.h>
 18#include <asm/bootinfo.h>
 19#include <asm/reboot.h>
 20#include <asm/setup.h>
 21#include <asm/mach-au1x00/au1000.h>
 22#include <asm/mach-au1x00/gpio-au1000.h>
 23#include <asm/mach-au1x00/au1xxx_eth.h>
 24#include <prom.h>
 25
 26const char *get_system_type(void)
 27{
 28	return "MTX-1";
 29}
 30
 31void prom_putchar(char c)
 32{
 33	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
 34}
 35
 36static void mtx1_reset(char *c)
 37{
 38	/* Jump to the reset vector */
 39	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
 40}
 41
 42static void mtx1_power_off(void)
 43{
 44	while (1)
 45		asm volatile (
 46		"	.set	mips32					\n"
 47		"	wait						\n"
 48		"	.set	mips0					\n");
 49}
 50
 51void __init board_setup(void)
 52{
 53#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
 54	/* Enable USB power switch */
 55	alchemy_gpio_direction_output(204, 0);
 56#endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */
 57
 58	/* Initialize sys_pinfunc */
 59	alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
 60
 61	/* Initialize GPIO */
 62	alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR);
 63	alchemy_gpio_direction_output(0, 0);	/* Disable M66EN (PCI 66MHz) */
 64	alchemy_gpio_direction_output(3, 1);	/* Disable PCI CLKRUN# */
 65	alchemy_gpio_direction_output(1, 1);	/* Enable EXT_IO3 */
 66	alchemy_gpio_direction_output(5, 0);	/* Disable eth PHY TX_ER */
 67
 68	/* Enable LED and set it to green */
 69	alchemy_gpio_direction_output(211, 1);	/* green on */
 70	alchemy_gpio_direction_output(212, 0);	/* red off */
 71
 72	pm_power_off = mtx1_power_off;
 73	_machine_halt = mtx1_power_off;
 74	_machine_restart = mtx1_reset;
 75
 76	printk(KERN_INFO "4G Systems MTX-1 Board\n");
 77}
 78
 79/******************************************************************************/
 80
 81static const struct software_node mtx1_gpiochip_node = {
 82	.name = "alchemy-gpio2",
 83};
 84
 85static const struct software_node mtx1_gpio_keys_node = {
 86	.name = "mtx1-gpio-keys",
 87};
 88
 89static const struct property_entry mtx1_button_props[] = {
 90	PROPERTY_ENTRY_U32("linux,code", BTN_0),
 91	PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 7, GPIO_ACTIVE_HIGH),
 92	PROPERTY_ENTRY_STRING("label", "System button"),
 93	{ }
 94};
 95
 96static const struct software_node mtx1_button_node = {
 97	.parent = &mtx1_gpio_keys_node,
 98	.properties = mtx1_button_props,
 99};
100
101static const struct software_node *mtx1_gpio_keys_swnodes[] __initconst = {
102	&mtx1_gpio_keys_node,
103	&mtx1_button_node,
104	NULL
105};
106
107static void __init mtx1_keys_init(void)
108{
109	struct platform_device_info keys_info = {
110		.name	= "gpio-keys",
111		.id	= PLATFORM_DEVID_NONE,
112	};
113	struct platform_device *pd;
114	int err;
115
116	err = software_node_register_node_group(mtx1_gpio_keys_swnodes);
117	if (err) {
118		pr_err("failed to register gpio-keys software nodes: %d\n", err);
119		return;
120	}
121
122	keys_info.fwnode = software_node_fwnode(&mtx1_gpio_keys_node);
123
124	pd = platform_device_register_full(&keys_info);
125	err = PTR_ERR_OR_ZERO(pd);
126	if (err)
127		pr_err("failed to create gpio-keys device: %d\n", err);
128}
129
130/* Global number 215 is offset 15 on Alchemy GPIO 2 */
131static const struct property_entry mtx1_wdt_props[] = {
132	PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 15, GPIO_ACTIVE_HIGH),
133	{ }
134};
135
136static struct platform_device_info mtx1_wdt_info __initconst = {
137	.name = "mtx1-wdt",
138	.id = 0,
139	.properties = mtx1_wdt_props,
140};
141
142static void __init mtx1_wdt_init(void)
143{
144	struct platform_device *pd;
145	int err;
146
147	pd = platform_device_register_full(&mtx1_wdt_info);
148	err = PTR_ERR_OR_ZERO(pd);
149	if (err)
150		pr_err("failed to create gpio-keys device: %d\n", err);
151}
152
153static const struct software_node mtx1_gpio_leds_node = {
154	.name = "mtx1-leds",
155};
156
157static const struct property_entry mtx1_green_led_props[] = {
158	PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 11, GPIO_ACTIVE_HIGH),
159	{ }
160};
161
162static const struct software_node mtx1_green_led_node = {
163	.name = "mtx1:green",
164	.parent = &mtx1_gpio_leds_node,
165	.properties = mtx1_green_led_props,
166};
167
168static const struct property_entry mtx1_red_led_props[] = {
169	PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 12, GPIO_ACTIVE_HIGH),
170	{ }
171};
172
173static const struct software_node mtx1_red_led_node = {
174	.name = "mtx1:red",
175	.parent = &mtx1_gpio_leds_node,
176	.properties = mtx1_red_led_props,
177};
178
179static const struct software_node *mtx1_gpio_leds_swnodes[] = {
180	&mtx1_gpio_leds_node,
181	&mtx1_green_led_node,
182	&mtx1_red_led_node,
183	NULL
184};
185
186static void __init mtx1_leds_init(void)
187{
188	struct platform_device_info led_info = {
189		.name	= "leds-gpio",
190		.id	= PLATFORM_DEVID_NONE,
191	};
192	struct platform_device *led_dev;
193	int err;
194
195	err = software_node_register_node_group(mtx1_gpio_leds_swnodes);
196	if (err) {
197		pr_err("failed to register LED software nodes: %d\n", err);
198		return;
199	}
200
201	led_info.fwnode = software_node_fwnode(&mtx1_gpio_leds_node);
202
203	led_dev = platform_device_register_full(&led_info);
204	err = PTR_ERR_OR_ZERO(led_dev);
205	if (err)
206		pr_err("failed to create LED device: %d\n", err);
207}
208
209static struct mtd_partition mtx1_mtd_partitions[] = {
210	{
211		.name	= "filesystem",
212		.size	= 0x01C00000,
213		.offset = 0,
214	},
215	{
216		.name	= "yamon",
217		.size	= 0x00100000,
218		.offset = MTDPART_OFS_APPEND,
219		.mask_flags = MTD_WRITEABLE,
220	},
221	{
222		.name	= "kernel",
223		.size	= 0x002c0000,
224		.offset = MTDPART_OFS_APPEND,
225	},
226	{
227		.name	= "yamon env",
228		.size	= 0x00040000,
229		.offset = MTDPART_OFS_APPEND,
230	},
231};
232
233static struct physmap_flash_data mtx1_flash_data = {
234	.width		= 4,
235	.nr_parts	= 4,
236	.parts		= mtx1_mtd_partitions,
237};
238
239static struct resource mtx1_mtd_resource = {
240	.start	= 0x1e000000,
241	.end	= 0x1fffffff,
242	.flags	= IORESOURCE_MEM,
243};
244
245static struct platform_device mtx1_mtd = {
246	.name		= "physmap-flash",
247	.dev		= {
248		.platform_data	= &mtx1_flash_data,
249	},
250	.num_resources	= 1,
251	.resource	= &mtx1_mtd_resource,
252};
253
254static struct resource alchemy_pci_host_res[] = {
255	[0] = {
256		.start	= AU1500_PCI_PHYS_ADDR,
257		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
258		.flags	= IORESOURCE_MEM,
259	},
260};
261
262static int mtx1_pci_idsel(unsigned int devsel, int assert)
263{
264	/* This function is only necessary to support a proprietary Cardbus
265	 * adapter on the mtx-1 "singleboard" variant. It triggers a custom
266	 * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
267	 */
268	udelay(1);
269
270	if (assert && devsel != 0)
271		/* Suppress signal to Cardbus */
272		alchemy_gpio_set_value(1, 0);	/* set EXT_IO3 OFF */
273	else
274		alchemy_gpio_set_value(1, 1);	/* set EXT_IO3 ON */
275
276	udelay(1);
277	return 1;
278}
279
280static const char mtx1_irqtab[][5] = {
281	[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
282	[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
283	[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
284	[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
285	[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
286	[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
287	[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
288	[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
289};
290
291static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
292{
293	return mtx1_irqtab[slot][pin];
294}
295
296static struct alchemy_pci_platdata mtx1_pci_pd = {
297	.board_map_irq	 = mtx1_map_pci_irq,
298	.board_pci_idsel = mtx1_pci_idsel,
299	.pci_cfg_set	 = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
300			   PCI_CONFIG_CH |
301#if defined(__MIPSEB__)
302			   PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
303#else
304			   0,
305#endif
306};
307
308static struct platform_device mtx1_pci_host = {
309	.dev.platform_data = &mtx1_pci_pd,
310	.name		= "alchemy-pci",
311	.id		= 0,
312	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
313	.resource	= alchemy_pci_host_res,
314};
315
316static struct platform_device *mtx1_devs[] __initdata = {
317	&mtx1_pci_host,
318	&mtx1_mtd,
319};
320
321static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
322	.phy_search_highest_addr	= 1,
323	.phy1_search_mac0		= 1,
324};
325
326static int __init mtx1_register_devices(void)
327{
328	int rc;
329
330	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
331	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
332	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
333	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
334	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
335
336	au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
337
338	rc = software_node_register(&mtx1_gpiochip_node);
339	if (rc)
340		return rc;
341
342	rc = platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
343	if (rc)
344		return rc;
345
346	mtx1_leds_init();
347	mtx1_wdt_init();
348	mtx1_keys_init();
349
350	return 0;
351}
352arch_initcall(mtx1_register_devices);