dns323-setup.c revision 386a048a1ea42ff9ac87ffa344c4c19a5cc59678 
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 <asm/mach-types.h>
25#include <asm/gpio.h>
26#include <asm/mach/arch.h>
27#include <asm/mach/pci.h>
28#include <asm/arch/orion5x.h>
29#include "common.h"
30
31#define DNS323_GPIO_LED_RIGHT_AMBER	1
32#define DNS323_GPIO_LED_LEFT_AMBER	2
33#define DNS323_GPIO_LED_POWER		5
34#define DNS323_GPIO_OVERTEMP		6
35#define DNS323_GPIO_RTC			7
36#define DNS323_GPIO_POWER_OFF		8
37#define DNS323_GPIO_KEY_POWER		9
38#define DNS323_GPIO_KEY_RESET		10
39
40/****************************************************************************
41 * PCI setup
42 */
43
44static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
45{
46	int irq;
47
48	/*
49	 * Check for devices with hard-wired IRQs.
50	 */
51	irq = orion5x_pci_map_irq(dev, slot, pin);
52	if (irq != -1)
53		return irq;
54
55	pr_err("%s: requested mapping for unknown device\n", __func__);
56
57	return -1;
58}
59
60static 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
68static int __init dns323_pci_init(void)
69{
70	if (machine_is_dns323())
71		pci_common_init(&dns323_pci);
72
73	return 0;
74}
75
76subsys_initcall(dns323_pci_init);
77
78/****************************************************************************
79 * Ethernet
80 */
81
82static struct mv643xx_eth_platform_data dns323_eth_data = {
83	.phy_addr = 8,
84	.force_phy_addr = 1,
85};
86
87/****************************************************************************
88 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
89 *
90 * Layout as used by D-Link:
91 *  0x00000000-0x00010000 : "MTD1"
92 *  0x00010000-0x00020000 : "MTD2"
93 *  0x00020000-0x001a0000 : "Linux Kernel"
94 *  0x001a0000-0x007d0000 : "File System"
95 *  0x007d0000-0x00800000 : "u-boot"
96 */
97
98#define DNS323_NOR_BOOT_BASE 0xf4000000
99#define DNS323_NOR_BOOT_SIZE SZ_8M
100
101static struct mtd_partition dns323_partitions[] = {
102	{
103		.name	= "MTD1",
104		.size	= 0x00010000,
105		.offset	= 0,
106	}, {
107		.name	= "MTD2",
108		.size	= 0x00010000,
109		.offset = 0x00010000,
110	}, {
111		.name	= "Linux Kernel",
112		.size	= 0x00180000,
113		.offset	= 0x00020000,
114	}, {
115		.name	= "File System",
116		.size	= 0x00630000,
117		.offset	= 0x001A0000,
118	}, {
119		.name	= "u-boot",
120		.size	= 0x00030000,
121		.offset	= 0x007d0000,
122	},
123};
124
125static struct physmap_flash_data dns323_nor_flash_data = {
126	.width		= 1,
127	.parts		= dns323_partitions,
128	.nr_parts	= ARRAY_SIZE(dns323_partitions)
129};
130
131static struct resource dns323_nor_flash_resource = {
132	.flags		= IORESOURCE_MEM,
133	.start		= DNS323_NOR_BOOT_BASE,
134	.end		= DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
135};
136
137static struct platform_device dns323_nor_flash = {
138	.name		= "physmap-flash",
139	.id		= 0,
140	.dev		= {
141		.platform_data	= &dns323_nor_flash_data,
142	},
143	.resource	= &dns323_nor_flash_resource,
144	.num_resources	= 1,
145};
146
147/****************************************************************************
148 * GPIO LEDs (simple - doesn't use hardware blinking support)
149 */
150
151static struct gpio_led dns323_leds[] = {
152	{
153		.name = "power:blue",
154		.gpio = DNS323_GPIO_LED_POWER,
155		.active_low = 1,
156	}, {
157		.name = "right:amber",
158		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
159		.active_low = 1,
160	}, {
161		.name = "left:amber",
162		.gpio = DNS323_GPIO_LED_LEFT_AMBER,
163		.active_low = 1,
164	},
165};
166
167static struct gpio_led_platform_data dns323_led_data = {
168	.num_leds	= ARRAY_SIZE(dns323_leds),
169	.leds		= dns323_leds,
170};
171
172static struct platform_device dns323_gpio_leds = {
173	.name		= "leds-gpio",
174	.id		= -1,
175	.dev		= {
176		.platform_data	= &dns323_led_data,
177	},
178};
179
180/****************************************************************************
181 * GPIO Attached Keys
182 */
183
184static struct gpio_keys_button dns323_buttons[] = {
185	{
186		.code		= KEY_RESTART,
187		.gpio		= DNS323_GPIO_KEY_RESET,
188		.desc		= "Reset Button",
189		.active_low	= 1,
190	}, {
191		.code		= KEY_POWER,
192		.gpio		= DNS323_GPIO_KEY_POWER,
193		.desc		= "Power Button",
194		.active_low	= 1,
195	},
196};
197
198static struct gpio_keys_platform_data dns323_button_data = {
199	.buttons	= dns323_buttons,
200	.nbuttons	= ARRAY_SIZE(dns323_buttons),
201};
202
203static struct platform_device dns323_button_device = {
204	.name		= "gpio-keys",
205	.id		= -1,
206	.num_resources	= 0,
207	.dev		= {
208		.platform_data	= &dns323_button_data,
209	},
210};
211
212/****************************************************************************
213 * General Setup
214 */
215
216/*
217 * On the DNS-323 the following devices are attached via I2C:
218 *
219 *  i2c addr | chip        | description
220 *  0x3e     | GMT G760Af  | fan speed PWM controller
221 *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
222 *  0x68     | ST M41T80   | RTC w/ alarm
223 */
224static struct i2c_board_info __initdata dns323_i2c_devices[] = {
225	{
226		I2C_BOARD_INFO("g760a", 0x3e),
227#if 0
228	/* this entry requires the new-style driver model lm75 driver,
229	 * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
230	}, {
231		I2C_BOARD_INFO("g751", 0x48),
232#endif
233	}, {
234		I2C_BOARD_INFO("m41t80", 0x68),
235	},
236};
237
238/* DNS-323 specific power off method */
239static void dns323_power_off(void)
240{
241	pr_info("%s: triggering power-off...\n", __func__);
242	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
243}
244
245static void __init dns323_init(void)
246{
247	/* Setup basic Orion functions. Need to be called early. */
248	orion5x_init();
249
250	/* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
251	orion5x_write(MPP_0_7_CTRL, 0);
252	orion5x_write(MPP_8_15_CTRL, 0);
253	orion5x_write(MPP_16_19_CTRL, 0);
254	orion5x_write(MPP_DEV_CTRL, 0);
255
256	/* Define used GPIO pins
257
258	  GPIO Map:
259
260	  |  0 |     | PEX_RST_OUT (not controlled by GPIO)
261	  |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
262	  |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
263	  |  3 | Out | //unknown//
264	  |  4 | Out | power button LED (low-active, together with pin #5)
265	  |  5 | Out | power button LED (low-active, together with pin #4)
266	  |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
267	  |  7 | In  | M41T80 nIRQ/OUT/SQW signal
268	  |  8 | Out | triggers power off (high-active)
269	  |  9 | In  | power button switch (low-active)
270	  | 10 | In  | reset button switch (low-active)
271	  | 11 | Out | //unknown//
272	  | 12 | Out | //unknown//
273	  | 13 | Out | //unknown//
274	  | 14 | Out | //unknown//
275	  | 15 | Out | //unknown//
276	*/
277	orion5x_gpio_set_valid_pins(0x07f6);
278
279	/*
280	 * Configure peripherals.
281	 */
282	orion5x_ehci0_init();
283	orion5x_eth_init(&dns323_eth_data);
284	orion5x_i2c_init();
285	orion5x_uart0_init();
286
287	/* setup flash mapping
288	 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
289	 */
290	orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
291	platform_device_register(&dns323_nor_flash);
292
293	platform_device_register(&dns323_gpio_leds);
294
295	platform_device_register(&dns323_button_device);
296
297	i2c_register_board_info(0, dns323_i2c_devices,
298				ARRAY_SIZE(dns323_i2c_devices));
299
300	/* register dns323 specific power-off method */
301	if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
302	    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
303		pr_err("DNS323: failed to setup power-off GPIO\n");
304	pm_power_off = dns323_power_off;
305}
306
307/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
308MACHINE_START(DNS323, "D-Link DNS-323")
309	/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
310	.phys_io	= ORION5X_REGS_PHYS_BASE,
311	.io_pg_offst	= ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
312	.boot_params	= 0x00000100,
313	.init_machine	= dns323_init,
314	.map_io		= orion5x_map_io,
315	.init_irq	= orion5x_init_irq,
316	.timer		= &orion5x_timer,
317	.fixup		= tag_fixup_mem32,
318MACHINE_END
319