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
get_system_type(void)26 const char *get_system_type(void)
27 {
28 return "MTX-1";
29 }
30
prom_putchar(char c)31 void prom_putchar(char c)
32 {
33 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
34 }
35
mtx1_reset(char * c)36 static void mtx1_reset(char *c)
37 {
38 /* Jump to the reset vector */
39 __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
40 }
41
mtx1_power_off(void)42 static 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
board_setup(void)51 void __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
81 static const struct software_node mtx1_gpiochip_node = {
82 .name = "alchemy-gpio2",
83 };
84
85 static const struct software_node mtx1_gpio_keys_node = {
86 .name = "mtx1-gpio-keys",
87 };
88
89 static 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
96 static const struct software_node mtx1_button_node = {
97 .parent = &mtx1_gpio_keys_node,
98 .properties = mtx1_button_props,
99 };
100
101 static const struct software_node *mtx1_gpio_keys_swnodes[] __initconst = {
102 &mtx1_gpio_keys_node,
103 &mtx1_button_node,
104 NULL
105 };
106
mtx1_keys_init(void)107 static 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 */
131 static const struct property_entry mtx1_wdt_props[] = {
132 PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 15, GPIO_ACTIVE_HIGH),
133 { }
134 };
135
136 static struct platform_device_info mtx1_wdt_info __initconst = {
137 .name = "mtx1-wdt",
138 .id = 0,
139 .properties = mtx1_wdt_props,
140 };
141
mtx1_wdt_init(void)142 static 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
153 static const struct software_node mtx1_gpio_leds_node = {
154 .name = "mtx1-leds",
155 };
156
157 static const struct property_entry mtx1_green_led_props[] = {
158 PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 11, GPIO_ACTIVE_HIGH),
159 { }
160 };
161
162 static 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
168 static const struct property_entry mtx1_red_led_props[] = {
169 PROPERTY_ENTRY_GPIO("gpios", &mtx1_gpiochip_node, 12, GPIO_ACTIVE_HIGH),
170 { }
171 };
172
173 static 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
179 static 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
mtx1_leds_init(void)186 static 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
209 static 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
233 static struct physmap_flash_data mtx1_flash_data = {
234 .width = 4,
235 .nr_parts = 4,
236 .parts = mtx1_mtd_partitions,
237 };
238
239 static struct resource mtx1_mtd_resource = {
240 .start = 0x1e000000,
241 .end = 0x1fffffff,
242 .flags = IORESOURCE_MEM,
243 };
244
245 static 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
254 static 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
mtx1_pci_idsel(unsigned int devsel,int assert)262 static 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
280 static 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
mtx1_map_pci_irq(const struct pci_dev * d,u8 slot,u8 pin)291 static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
292 {
293 return mtx1_irqtab[slot][pin];
294 }
295
296 static 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
308 static 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
316 static struct platform_device *mtx1_devs[] __initdata = {
317 &mtx1_pci_host,
318 &mtx1_mtd,
319 };
320
321 static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
322 .phy_search_highest_addr = 1,
323 .phy1_search_mac0 = 1,
324 };
325
mtx1_register_devices(void)326 static 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 }
352 arch_initcall(mtx1_register_devices);
353