1/*
2 * MTX-1 platform devices registration (Au1500)
3 *
4 * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
19 */
20
21#include <linux/init.h>
22#include <linux/interrupt.h>
23#include <linux/kernel.h>
24#include <linux/platform_device.h>
25#include <linux/leds.h>
26#include <linux/gpio.h>
27#include <linux/gpio_keys.h>
28#include <linux/input.h>
29#include <linux/mtd/partitions.h>
30#include <linux/mtd/physmap.h>
31#include <mtd/mtd-abi.h>
32#include <asm/bootinfo.h>
33#include <asm/reboot.h>
34#include <asm/mach-au1x00/au1000.h>
35#include <asm/mach-au1x00/gpio-au1000.h>
36#include <asm/mach-au1x00/au1xxx_eth.h>
37#include <prom.h>
38
39const char *get_system_type(void)
40{
41	return "MTX-1";
42}
43
44void __init prom_init(void)
45{
46	unsigned char *memsize_str;
47	unsigned long memsize;
48
49	prom_argc = fw_arg0;
50	prom_argv = (char **)fw_arg1;
51	prom_envp = (char **)fw_arg2;
52
53	prom_init_cmdline();
54
55	memsize_str = prom_getenv("memsize");
56	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
57		memsize = 0x04000000;
58	add_memory_region(0, memsize, BOOT_MEM_RAM);
59}
60
61void prom_putchar(unsigned char c)
62{
63	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
64}
65
66static void mtx1_reset(char *c)
67{
68	/* Jump to the reset vector */
69	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
70}
71
72static void mtx1_power_off(void)
73{
74	while (1)
75		asm volatile (
76		"	.set	mips32					\n"
77		"	wait						\n"
78		"	.set	mips0					\n");
79}
80
81void __init board_setup(void)
82{
83#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
84	/* Enable USB power switch */
85	alchemy_gpio_direction_output(204, 0);
86#endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */
87
88	/* Initialize sys_pinfunc */
89	alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
90
91	/* Initialize GPIO */
92	alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR);
93	alchemy_gpio_direction_output(0, 0);	/* Disable M66EN (PCI 66MHz) */
94	alchemy_gpio_direction_output(3, 1);	/* Disable PCI CLKRUN# */
95	alchemy_gpio_direction_output(1, 1);	/* Enable EXT_IO3 */
96	alchemy_gpio_direction_output(5, 0);	/* Disable eth PHY TX_ER */
97
98	/* Enable LED and set it to green */
99	alchemy_gpio_direction_output(211, 1);	/* green on */
100	alchemy_gpio_direction_output(212, 0);	/* red off */
101
102	pm_power_off = mtx1_power_off;
103	_machine_halt = mtx1_power_off;
104	_machine_restart = mtx1_reset;
105
106	printk(KERN_INFO "4G Systems MTX-1 Board\n");
107}
108
109/******************************************************************************/
110
111static struct gpio_keys_button mtx1_gpio_button[] = {
112	{
113		.gpio = 207,
114		.code = BTN_0,
115		.desc = "System button",
116	}
117};
118
119static struct gpio_keys_platform_data mtx1_buttons_data = {
120	.buttons = mtx1_gpio_button,
121	.nbuttons = ARRAY_SIZE(mtx1_gpio_button),
122};
123
124static struct platform_device mtx1_button = {
125	.name = "gpio-keys",
126	.id = -1,
127	.dev = {
128		.platform_data = &mtx1_buttons_data,
129	}
130};
131
132static struct resource mtx1_wdt_res[] = {
133	[0] = {
134		.start	= 215,
135		.end	= 215,
136		.name	= "mtx1-wdt-gpio",
137		.flags	= IORESOURCE_IRQ,
138	}
139};
140
141static struct platform_device mtx1_wdt = {
142	.name = "mtx1-wdt",
143	.id = 0,
144	.num_resources = ARRAY_SIZE(mtx1_wdt_res),
145	.resource = mtx1_wdt_res,
146};
147
148static struct gpio_led default_leds[] = {
149	{
150		.name	= "mtx1:green",
151		.gpio = 211,
152	}, {
153		.name = "mtx1:red",
154		.gpio = 212,
155	},
156};
157
158static struct gpio_led_platform_data mtx1_led_data = {
159	.num_leds = ARRAY_SIZE(default_leds),
160	.leds = default_leds,
161};
162
163static struct platform_device mtx1_gpio_leds = {
164	.name = "leds-gpio",
165	.id = -1,
166	.dev = {
167		.platform_data = &mtx1_led_data,
168	}
169};
170
171static struct mtd_partition mtx1_mtd_partitions[] = {
172	{
173		.name	= "filesystem",
174		.size	= 0x01C00000,
175		.offset = 0,
176	},
177	{
178		.name	= "yamon",
179		.size	= 0x00100000,
180		.offset = MTDPART_OFS_APPEND,
181		.mask_flags = MTD_WRITEABLE,
182	},
183	{
184		.name	= "kernel",
185		.size	= 0x002c0000,
186		.offset = MTDPART_OFS_APPEND,
187	},
188	{
189		.name	= "yamon env",
190		.size	= 0x00040000,
191		.offset = MTDPART_OFS_APPEND,
192	},
193};
194
195static struct physmap_flash_data mtx1_flash_data = {
196	.width		= 4,
197	.nr_parts	= 4,
198	.parts		= mtx1_mtd_partitions,
199};
200
201static struct resource mtx1_mtd_resource = {
202	.start	= 0x1e000000,
203	.end	= 0x1fffffff,
204	.flags	= IORESOURCE_MEM,
205};
206
207static struct platform_device mtx1_mtd = {
208	.name		= "physmap-flash",
209	.dev		= {
210		.platform_data	= &mtx1_flash_data,
211	},
212	.num_resources	= 1,
213	.resource	= &mtx1_mtd_resource,
214};
215
216static struct resource alchemy_pci_host_res[] = {
217	[0] = {
218		.start	= AU1500_PCI_PHYS_ADDR,
219		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
220		.flags	= IORESOURCE_MEM,
221	},
222};
223
224static int mtx1_pci_idsel(unsigned int devsel, int assert)
225{
226	/* This function is only necessary to support a proprietary Cardbus
227	 * adapter on the mtx-1 "singleboard" variant. It triggers a custom
228	 * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
229	 */
230	udelay(1);
231
232	if (assert && devsel != 0)
233		/* Suppress signal to Cardbus */
234		alchemy_gpio_set_value(1, 0);	/* set EXT_IO3 OFF */
235	else
236		alchemy_gpio_set_value(1, 1);	/* set EXT_IO3 ON */
237
238	udelay(1);
239	return 1;
240}
241
242static const char mtx1_irqtab[][5] = {
243	[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
244	[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
245	[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
246	[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
247	[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
248	[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
249	[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
250	[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
251};
252
253static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
254{
255	return mtx1_irqtab[slot][pin];
256}
257
258static struct alchemy_pci_platdata mtx1_pci_pd = {
259	.board_map_irq	 = mtx1_map_pci_irq,
260	.board_pci_idsel = mtx1_pci_idsel,
261	.pci_cfg_set	 = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
262			   PCI_CONFIG_CH |
263#if defined(__MIPSEB__)
264			   PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
265#else
266			   0,
267#endif
268};
269
270static struct platform_device mtx1_pci_host = {
271	.dev.platform_data = &mtx1_pci_pd,
272	.name		= "alchemy-pci",
273	.id		= 0,
274	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
275	.resource	= alchemy_pci_host_res,
276};
277
278static struct platform_device *mtx1_devs[] __initdata = {
279	&mtx1_pci_host,
280	&mtx1_gpio_leds,
281	&mtx1_wdt,
282	&mtx1_button,
283	&mtx1_mtd,
284};
285
286static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
287	.phy_search_highest_addr	= 1,
288	.phy1_search_mac0		= 1,
289};
290
291static int __init mtx1_register_devices(void)
292{
293	int rc;
294
295	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
296	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
297	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
298	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
299	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
300
301	au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
302
303	rc = gpio_request(mtx1_gpio_button[0].gpio,
304					mtx1_gpio_button[0].desc);
305	if (rc < 0) {
306		printk(KERN_INFO "mtx1: failed to request %d\n",
307					mtx1_gpio_button[0].gpio);
308		goto out;
309	}
310	gpio_direction_input(mtx1_gpio_button[0].gpio);
311out:
312	return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
313}
314arch_initcall(mtx1_register_devices);
315