1 /*
2 * arch/arm/mach-orion5x/dns323-setup.c
3 *
4 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
10 *
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/pci.h>
17 #include <linux/irq.h>
18 #include <linux/mtd/physmap.h>
19 #include <linux/mv643xx_eth.h>
20 #include <linux/leds.h>
21 #include <linux/gpio_keys.h>
22 #include <linux/input.h>
23 #include <linux/i2c.h>
24 #include <linux/ata_platform.h>
25 #include <asm/mach-types.h>
26 #include <asm/gpio.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/pci.h>
29 #include <mach/orion5x.h>
30 #include "common.h"
31 #include "mpp.h"
32
33 #define DNS323_GPIO_LED_RIGHT_AMBER 1
34 #define DNS323_GPIO_LED_LEFT_AMBER 2
35 #define DNS323_GPIO_LED_POWER 5
36 #define DNS323_GPIO_OVERTEMP 6
37 #define DNS323_GPIO_RTC 7
38 #define DNS323_GPIO_POWER_OFF 8
39 #define DNS323_GPIO_KEY_POWER 9
40 #define DNS323_GPIO_KEY_RESET 10
41
42 /****************************************************************************
43 * PCI setup
44 */
45
dns323_pci_map_irq(struct pci_dev * dev,u8 slot,u8 pin)46 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
47 {
48 int irq;
49
50 /*
51 * Check for devices with hard-wired IRQs.
52 */
53 irq = orion5x_pci_map_irq(dev, slot, pin);
54 if (irq != -1)
55 return irq;
56
57 return -1;
58 }
59
60 static struct hw_pci dns323_pci __initdata = {
61 .nr_controllers = 2,
62 .swizzle = pci_std_swizzle,
63 .setup = orion5x_pci_sys_setup,
64 .scan = orion5x_pci_sys_scan_bus,
65 .map_irq = dns323_pci_map_irq,
66 };
67
dns323_dev_id(void)68 static int __init dns323_dev_id(void)
69 {
70 u32 dev, rev;
71
72 orion5x_pcie_id(&dev, &rev);
73
74 return dev;
75 }
76
dns323_pci_init(void)77 static int __init dns323_pci_init(void)
78 {
79 /* The 5182 doesn't really use it's PCI bus, and initialising PCI
80 * gets in the way of initialising the SATA controller.
81 */
82 if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
83 pci_common_init(&dns323_pci);
84
85 return 0;
86 }
87
88 subsys_initcall(dns323_pci_init);
89
90 /****************************************************************************
91 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
92 *
93 * Layout as used by D-Link:
94 * 0x00000000-0x00010000 : "MTD1"
95 * 0x00010000-0x00020000 : "MTD2"
96 * 0x00020000-0x001a0000 : "Linux Kernel"
97 * 0x001a0000-0x007d0000 : "File System"
98 * 0x007d0000-0x00800000 : "u-boot"
99 */
100
101 #define DNS323_NOR_BOOT_BASE 0xf4000000
102 #define DNS323_NOR_BOOT_SIZE SZ_8M
103
104 static struct mtd_partition dns323_partitions[] = {
105 {
106 .name = "MTD1",
107 .size = 0x00010000,
108 .offset = 0,
109 }, {
110 .name = "MTD2",
111 .size = 0x00010000,
112 .offset = 0x00010000,
113 }, {
114 .name = "Linux Kernel",
115 .size = 0x00180000,
116 .offset = 0x00020000,
117 }, {
118 .name = "File System",
119 .size = 0x00630000,
120 .offset = 0x001A0000,
121 }, {
122 .name = "u-boot",
123 .size = 0x00030000,
124 .offset = 0x007d0000,
125 },
126 };
127
128 static struct physmap_flash_data dns323_nor_flash_data = {
129 .width = 1,
130 .parts = dns323_partitions,
131 .nr_parts = ARRAY_SIZE(dns323_partitions)
132 };
133
134 static struct resource dns323_nor_flash_resource = {
135 .flags = IORESOURCE_MEM,
136 .start = DNS323_NOR_BOOT_BASE,
137 .end = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
138 };
139
140 static struct platform_device dns323_nor_flash = {
141 .name = "physmap-flash",
142 .id = 0,
143 .dev = {
144 .platform_data = &dns323_nor_flash_data,
145 },
146 .resource = &dns323_nor_flash_resource,
147 .num_resources = 1,
148 };
149
150 /****************************************************************************
151 * Ethernet
152 */
153
154 static struct mv643xx_eth_platform_data dns323_eth_data = {
155 .phy_addr = MV643XX_ETH_PHY_ADDR(8),
156 };
157
158 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
159 * functions be kept somewhere?
160 */
dns323_parse_hex_nibble(char n)161 static int __init dns323_parse_hex_nibble(char n)
162 {
163 if (n >= '0' && n <= '9')
164 return n - '0';
165
166 if (n >= 'A' && n <= 'F')
167 return n - 'A' + 10;
168
169 if (n >= 'a' && n <= 'f')
170 return n - 'a' + 10;
171
172 return -1;
173 }
174
dns323_parse_hex_byte(const char * b)175 static int __init dns323_parse_hex_byte(const char *b)
176 {
177 int hi;
178 int lo;
179
180 hi = dns323_parse_hex_nibble(b[0]);
181 lo = dns323_parse_hex_nibble(b[1]);
182
183 if (hi < 0 || lo < 0)
184 return -1;
185
186 return (hi << 4) | lo;
187 }
188
dns323_read_mac_addr(void)189 static int __init dns323_read_mac_addr(void)
190 {
191 u_int8_t addr[6];
192 int i;
193 char *mac_page;
194
195 /* MAC address is stored as a regular ol' string in /dev/mtdblock4
196 * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
197 */
198 mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
199 if (!mac_page)
200 return -ENOMEM;
201
202 /* Sanity check the string we're looking at */
203 for (i = 0; i < 5; i++) {
204 if (*(mac_page + (i * 3) + 2) != ':') {
205 goto error_fail;
206 }
207 }
208
209 for (i = 0; i < 6; i++) {
210 int byte;
211
212 byte = dns323_parse_hex_byte(mac_page + (i * 3));
213 if (byte < 0) {
214 goto error_fail;
215 }
216
217 addr[i] = byte;
218 }
219
220 iounmap(mac_page);
221 printk("DNS323: Found ethernet MAC address: ");
222 for (i = 0; i < 6; i++)
223 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
224
225 memcpy(dns323_eth_data.mac_addr, addr, 6);
226
227 return 0;
228
229 error_fail:
230 iounmap(mac_page);
231 return -EINVAL;
232 }
233
234 /****************************************************************************
235 * GPIO LEDs (simple - doesn't use hardware blinking support)
236 */
237
238 static struct gpio_led dns323_leds[] = {
239 {
240 .name = "power:blue",
241 .gpio = DNS323_GPIO_LED_POWER,
242 .active_low = 1,
243 }, {
244 .name = "right:amber",
245 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
246 .active_low = 1,
247 }, {
248 .name = "left:amber",
249 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
250 .active_low = 1,
251 },
252 };
253
254 static struct gpio_led_platform_data dns323_led_data = {
255 .num_leds = ARRAY_SIZE(dns323_leds),
256 .leds = dns323_leds,
257 };
258
259 static struct platform_device dns323_gpio_leds = {
260 .name = "leds-gpio",
261 .id = -1,
262 .dev = {
263 .platform_data = &dns323_led_data,
264 },
265 };
266
267 /****************************************************************************
268 * GPIO Attached Keys
269 */
270
271 static struct gpio_keys_button dns323_buttons[] = {
272 {
273 .code = KEY_RESTART,
274 .gpio = DNS323_GPIO_KEY_RESET,
275 .desc = "Reset Button",
276 .active_low = 1,
277 }, {
278 .code = KEY_POWER,
279 .gpio = DNS323_GPIO_KEY_POWER,
280 .desc = "Power Button",
281 .active_low = 1,
282 },
283 };
284
285 static struct gpio_keys_platform_data dns323_button_data = {
286 .buttons = dns323_buttons,
287 .nbuttons = ARRAY_SIZE(dns323_buttons),
288 };
289
290 static struct platform_device dns323_button_device = {
291 .name = "gpio-keys",
292 .id = -1,
293 .num_resources = 0,
294 .dev = {
295 .platform_data = &dns323_button_data,
296 },
297 };
298
299 /*****************************************************************************
300 * SATA
301 */
302 static struct mv_sata_platform_data dns323_sata_data = {
303 .n_ports = 2,
304 };
305
306 /****************************************************************************
307 * General Setup
308 */
309 static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
310 { 0, MPP_PCIE_RST_OUTn },
311 { 1, MPP_GPIO }, /* right amber LED (sata ch0) */
312 { 2, MPP_GPIO }, /* left amber LED (sata ch1) */
313 { 3, MPP_UNUSED },
314 { 4, MPP_GPIO }, /* power button LED */
315 { 5, MPP_GPIO }, /* power button LED */
316 { 6, MPP_GPIO }, /* GMT G751-2f overtemp */
317 { 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
318 { 8, MPP_GPIO }, /* triggers power off */
319 { 9, MPP_GPIO }, /* power button switch */
320 { 10, MPP_GPIO }, /* reset button switch */
321 { 11, MPP_UNUSED },
322 { 12, MPP_UNUSED },
323 { 13, MPP_UNUSED },
324 { 14, MPP_UNUSED },
325 { 15, MPP_UNUSED },
326 { 16, MPP_UNUSED },
327 { 17, MPP_UNUSED },
328 { 18, MPP_UNUSED },
329 { 19, MPP_UNUSED },
330 { -1 },
331 };
332
333 static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
334 { 0, MPP_UNUSED },
335 { 1, MPP_GPIO }, /* right amber LED (sata ch0) */
336 { 2, MPP_GPIO }, /* left amber LED (sata ch1) */
337 { 3, MPP_UNUSED },
338 { 4, MPP_GPIO }, /* power button LED */
339 { 5, MPP_GPIO }, /* power button LED */
340 { 6, MPP_GPIO }, /* GMT G751-2f overtemp */
341 { 7, MPP_GPIO }, /* M41T80 nIRQ/OUT/SQW */
342 { 8, MPP_GPIO }, /* triggers power off */
343 { 9, MPP_GPIO }, /* power button switch */
344 { 10, MPP_GPIO }, /* reset button switch */
345 { 11, MPP_UNUSED },
346 { 12, MPP_SATA_LED },
347 { 13, MPP_SATA_LED },
348 { 14, MPP_SATA_LED },
349 { 15, MPP_SATA_LED },
350 { 16, MPP_UNUSED },
351 { 17, MPP_UNUSED },
352 { 18, MPP_UNUSED },
353 { 19, MPP_UNUSED },
354 { -1 },
355 };
356
357 /*
358 * On the DNS-323 the following devices are attached via I2C:
359 *
360 * i2c addr | chip | description
361 * 0x3e | GMT G760Af | fan speed PWM controller
362 * 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
363 * 0x68 | ST M41T80 | RTC w/ alarm
364 */
365 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
366 {
367 I2C_BOARD_INFO("g760a", 0x3e),
368 }, {
369 I2C_BOARD_INFO("lm75", 0x48),
370 }, {
371 I2C_BOARD_INFO("m41t80", 0x68),
372 },
373 };
374
375 /* DNS-323 specific power off method */
dns323_power_off(void)376 static void dns323_power_off(void)
377 {
378 pr_info("%s: triggering power-off...\n", __func__);
379 gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
380 }
381
dns323_init(void)382 static void __init dns323_init(void)
383 {
384 /* Setup basic Orion functions. Need to be called early. */
385 orion5x_init();
386
387 /* Just to be tricky, the 5182 has a completely different
388 * set of MPP modes to the 5181.
389 */
390 if (dns323_dev_id() == MV88F5182_DEV_ID)
391 orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
392 else {
393 orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
394 writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
395 }
396
397 /* setup flash mapping
398 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
399 */
400 orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
401 platform_device_register(&dns323_nor_flash);
402
403 platform_device_register(&dns323_gpio_leds);
404
405 platform_device_register(&dns323_button_device);
406
407 i2c_register_board_info(0, dns323_i2c_devices,
408 ARRAY_SIZE(dns323_i2c_devices));
409
410 /*
411 * Configure peripherals.
412 */
413 if (dns323_read_mac_addr() < 0)
414 printk("DNS323: Failed to read MAC address\n");
415
416 orion5x_ehci0_init();
417 orion5x_eth_init(&dns323_eth_data);
418 orion5x_i2c_init();
419 orion5x_uart0_init();
420
421 /* The 5182 has it's SATA controller on-chip, and needs it's own little
422 * init routine.
423 */
424 if (dns323_dev_id() == MV88F5182_DEV_ID)
425 orion5x_sata_init(&dns323_sata_data);
426
427 /* register dns323 specific power-off method */
428 if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
429 gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
430 pr_err("DNS323: failed to setup power-off GPIO\n");
431 pm_power_off = dns323_power_off;
432 }
433
434 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
435 MACHINE_START(DNS323, "D-Link DNS-323")
436 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
437 .phys_io = ORION5X_REGS_PHYS_BASE,
438 .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
439 .boot_params = 0x00000100,
440 .init_machine = dns323_init,
441 .map_io = orion5x_map_io,
442 .init_irq = orion5x_init_irq,
443 .timer = &orion5x_timer,
444 .fixup = tag_fixup_mem32,
445 MACHINE_END
446