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/leds.h> |
13 | #include <linux/gpio.h> |
14 | #include <linux/gpio/machine.h> |
15 | #include <linux/gpio_keys.h> |
16 | #include <linux/input.h> |
17 | #include <linux/mtd/partitions.h> |
18 | #include <linux/mtd/physmap.h> |
19 | #include <mtd/mtd-abi.h> |
20 | #include <asm/bootinfo.h> |
21 | #include <asm/reboot.h> |
22 | #include <asm/setup.h> |
23 | #include <asm/mach-au1x00/au1000.h> |
24 | #include <asm/mach-au1x00/gpio-au1000.h> |
25 | #include <asm/mach-au1x00/au1xxx_eth.h> |
26 | #include <prom.h> |
27 | |
28 | const char *get_system_type(void) |
29 | { |
30 | return "MTX-1" ; |
31 | } |
32 | |
33 | void prom_putchar(char c) |
34 | { |
35 | alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); |
36 | } |
37 | |
38 | static void mtx1_reset(char *c) |
39 | { |
40 | /* Jump to the reset vector */ |
41 | __asm__ __volatile__("jr\t%0" : : "r" (0xbfc00000)); |
42 | } |
43 | |
44 | static void mtx1_power_off(void) |
45 | { |
46 | while (1) |
47 | asm volatile ( |
48 | " .set mips32 \n" |
49 | " wait \n" |
50 | " .set mips0 \n" ); |
51 | } |
52 | |
53 | void __init board_setup(void) |
54 | { |
55 | #if IS_ENABLED(CONFIG_USB_OHCI_HCD) |
56 | /* Enable USB power switch */ |
57 | alchemy_gpio_direction_output(204, 0); |
58 | #endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */ |
59 | |
60 | /* Initialize sys_pinfunc */ |
61 | alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC); |
62 | |
63 | /* Initialize GPIO */ |
64 | alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR); |
65 | alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */ |
66 | alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */ |
67 | alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */ |
68 | alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */ |
69 | |
70 | /* Enable LED and set it to green */ |
71 | alchemy_gpio_direction_output(211, 1); /* green on */ |
72 | alchemy_gpio_direction_output(212, 0); /* red off */ |
73 | |
74 | pm_power_off = mtx1_power_off; |
75 | _machine_halt = mtx1_power_off; |
76 | _machine_restart = mtx1_reset; |
77 | |
78 | printk(KERN_INFO "4G Systems MTX-1 Board\n" ); |
79 | } |
80 | |
81 | /******************************************************************************/ |
82 | |
83 | static struct gpio_keys_button mtx1_gpio_button[] = { |
84 | { |
85 | .gpio = 207, |
86 | .code = BTN_0, |
87 | .desc = "System button" , |
88 | } |
89 | }; |
90 | |
91 | static struct gpio_keys_platform_data mtx1_buttons_data = { |
92 | .buttons = mtx1_gpio_button, |
93 | .nbuttons = ARRAY_SIZE(mtx1_gpio_button), |
94 | }; |
95 | |
96 | static struct platform_device mtx1_button = { |
97 | .name = "gpio-keys" , |
98 | .id = -1, |
99 | .dev = { |
100 | .platform_data = &mtx1_buttons_data, |
101 | } |
102 | }; |
103 | |
104 | static struct gpiod_lookup_table mtx1_wdt_gpio_table = { |
105 | .dev_id = "mtx1-wdt.0" , |
106 | .table = { |
107 | /* Global number 215 is offset 15 on Alchemy GPIO 2 */ |
108 | GPIO_LOOKUP("alchemy-gpio2" , 15, NULL, GPIO_ACTIVE_HIGH), |
109 | { }, |
110 | }, |
111 | }; |
112 | |
113 | static struct platform_device mtx1_wdt = { |
114 | .name = "mtx1-wdt" , |
115 | .id = 0, |
116 | }; |
117 | |
118 | static const struct gpio_led default_leds[] = { |
119 | { |
120 | .name = "mtx1:green" , |
121 | .gpio = 211, |
122 | }, { |
123 | .name = "mtx1:red" , |
124 | .gpio = 212, |
125 | }, |
126 | }; |
127 | |
128 | static struct gpio_led_platform_data mtx1_led_data = { |
129 | .num_leds = ARRAY_SIZE(default_leds), |
130 | .leds = default_leds, |
131 | }; |
132 | |
133 | static struct platform_device mtx1_gpio_leds = { |
134 | .name = "leds-gpio" , |
135 | .id = -1, |
136 | .dev = { |
137 | .platform_data = &mtx1_led_data, |
138 | } |
139 | }; |
140 | |
141 | static struct mtd_partition mtx1_mtd_partitions[] = { |
142 | { |
143 | .name = "filesystem" , |
144 | .size = 0x01C00000, |
145 | .offset = 0, |
146 | }, |
147 | { |
148 | .name = "yamon" , |
149 | .size = 0x00100000, |
150 | .offset = MTDPART_OFS_APPEND, |
151 | .mask_flags = MTD_WRITEABLE, |
152 | }, |
153 | { |
154 | .name = "kernel" , |
155 | .size = 0x002c0000, |
156 | .offset = MTDPART_OFS_APPEND, |
157 | }, |
158 | { |
159 | .name = "yamon env" , |
160 | .size = 0x00040000, |
161 | .offset = MTDPART_OFS_APPEND, |
162 | }, |
163 | }; |
164 | |
165 | static struct physmap_flash_data mtx1_flash_data = { |
166 | .width = 4, |
167 | .nr_parts = 4, |
168 | .parts = mtx1_mtd_partitions, |
169 | }; |
170 | |
171 | static struct resource mtx1_mtd_resource = { |
172 | .start = 0x1e000000, |
173 | .end = 0x1fffffff, |
174 | .flags = IORESOURCE_MEM, |
175 | }; |
176 | |
177 | static struct platform_device mtx1_mtd = { |
178 | .name = "physmap-flash" , |
179 | .dev = { |
180 | .platform_data = &mtx1_flash_data, |
181 | }, |
182 | .num_resources = 1, |
183 | .resource = &mtx1_mtd_resource, |
184 | }; |
185 | |
186 | static struct resource alchemy_pci_host_res[] = { |
187 | [0] = { |
188 | .start = AU1500_PCI_PHYS_ADDR, |
189 | .end = AU1500_PCI_PHYS_ADDR + 0xfff, |
190 | .flags = IORESOURCE_MEM, |
191 | }, |
192 | }; |
193 | |
194 | static int mtx1_pci_idsel(unsigned int devsel, int assert) |
195 | { |
196 | /* This function is only necessary to support a proprietary Cardbus |
197 | * adapter on the mtx-1 "singleboard" variant. It triggers a custom |
198 | * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals. |
199 | */ |
200 | udelay(1); |
201 | |
202 | if (assert && devsel != 0) |
203 | /* Suppress signal to Cardbus */ |
204 | alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */ |
205 | else |
206 | alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */ |
207 | |
208 | udelay(1); |
209 | return 1; |
210 | } |
211 | |
212 | static const char mtx1_irqtab[][5] = { |
213 | [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */ |
214 | [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */ |
215 | [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */ |
216 | [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */ |
217 | [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */ |
218 | [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */ |
219 | [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */ |
220 | [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */ |
221 | }; |
222 | |
223 | static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) |
224 | { |
225 | return mtx1_irqtab[slot][pin]; |
226 | } |
227 | |
228 | static struct alchemy_pci_platdata mtx1_pci_pd = { |
229 | .board_map_irq = mtx1_map_pci_irq, |
230 | .board_pci_idsel = mtx1_pci_idsel, |
231 | .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | |
232 | PCI_CONFIG_CH | |
233 | #if defined(__MIPSEB__) |
234 | PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, |
235 | #else |
236 | 0, |
237 | #endif |
238 | }; |
239 | |
240 | static struct platform_device mtx1_pci_host = { |
241 | .dev.platform_data = &mtx1_pci_pd, |
242 | .name = "alchemy-pci" , |
243 | .id = 0, |
244 | .num_resources = ARRAY_SIZE(alchemy_pci_host_res), |
245 | .resource = alchemy_pci_host_res, |
246 | }; |
247 | |
248 | static struct platform_device *mtx1_devs[] __initdata = { |
249 | &mtx1_pci_host, |
250 | &mtx1_gpio_leds, |
251 | &mtx1_wdt, |
252 | &mtx1_button, |
253 | &mtx1_mtd, |
254 | }; |
255 | |
256 | static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = { |
257 | .phy_search_highest_addr = 1, |
258 | .phy1_search_mac0 = 1, |
259 | }; |
260 | |
261 | static int __init mtx1_register_devices(void) |
262 | { |
263 | int rc; |
264 | |
265 | irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH); |
266 | irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW); |
267 | irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW); |
268 | irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW); |
269 | irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); |
270 | |
271 | au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata); |
272 | |
273 | rc = gpio_request(gpio: mtx1_gpio_button[0].gpio, |
274 | label: mtx1_gpio_button[0].desc); |
275 | if (rc < 0) { |
276 | printk(KERN_INFO "mtx1: failed to request %d\n" , |
277 | mtx1_gpio_button[0].gpio); |
278 | goto out; |
279 | } |
280 | gpio_direction_input(gpio: mtx1_gpio_button[0].gpio); |
281 | out: |
282 | gpiod_add_lookup_table(table: &mtx1_wdt_gpio_table); |
283 | return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs)); |
284 | } |
285 | arch_initcall(mtx1_register_devices); |
286 | |