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 
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 
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 
77 static int __init dns323_pci_init(void)
78 {
79 	/* The 5182 doesn't really use its 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  */
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 
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 
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 */
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 
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 its SATA controller on-chip, and needs its 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