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 <mach/orion5x.h>
29 #include "common.h"
30 #include "mpp.h"
31 
32 #define DNS323_GPIO_LED_RIGHT_AMBER	1
33 #define DNS323_GPIO_LED_LEFT_AMBER	2
34 #define DNS323_GPIO_LED_POWER		5
35 #define DNS323_GPIO_OVERTEMP		6
36 #define DNS323_GPIO_RTC			7
37 #define DNS323_GPIO_POWER_OFF		8
38 #define DNS323_GPIO_KEY_POWER		9
39 #define DNS323_GPIO_KEY_RESET		10
40 
41 /****************************************************************************
42  * PCI setup
43  */
44 
45 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
46 {
47 	int irq;
48 
49 	/*
50 	 * Check for devices with hard-wired IRQs.
51 	 */
52 	irq = orion5x_pci_map_irq(dev, slot, pin);
53 	if (irq != -1)
54 		return irq;
55 
56 	return -1;
57 }
58 
59 static struct hw_pci dns323_pci __initdata = {
60 	.nr_controllers = 2,
61 	.swizzle	= pci_std_swizzle,
62 	.setup		= orion5x_pci_sys_setup,
63 	.scan		= orion5x_pci_sys_scan_bus,
64 	.map_irq	= dns323_pci_map_irq,
65 };
66 
67 static int __init dns323_pci_init(void)
68 {
69 	if (machine_is_dns323())
70 		pci_common_init(&dns323_pci);
71 
72 	return 0;
73 }
74 
75 subsys_initcall(dns323_pci_init);
76 
77 /****************************************************************************
78  * Ethernet
79  */
80 
81 static struct mv643xx_eth_platform_data dns323_eth_data = {
82 	.phy_addr = MV643XX_ETH_PHY_ADDR(8),
83 };
84 
85 /****************************************************************************
86  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
87  *
88  * Layout as used by D-Link:
89  *  0x00000000-0x00010000 : "MTD1"
90  *  0x00010000-0x00020000 : "MTD2"
91  *  0x00020000-0x001a0000 : "Linux Kernel"
92  *  0x001a0000-0x007d0000 : "File System"
93  *  0x007d0000-0x00800000 : "u-boot"
94  */
95 
96 #define DNS323_NOR_BOOT_BASE 0xf4000000
97 #define DNS323_NOR_BOOT_SIZE SZ_8M
98 
99 static struct mtd_partition dns323_partitions[] = {
100 	{
101 		.name	= "MTD1",
102 		.size	= 0x00010000,
103 		.offset	= 0,
104 	}, {
105 		.name	= "MTD2",
106 		.size	= 0x00010000,
107 		.offset = 0x00010000,
108 	}, {
109 		.name	= "Linux Kernel",
110 		.size	= 0x00180000,
111 		.offset	= 0x00020000,
112 	}, {
113 		.name	= "File System",
114 		.size	= 0x00630000,
115 		.offset	= 0x001A0000,
116 	}, {
117 		.name	= "u-boot",
118 		.size	= 0x00030000,
119 		.offset	= 0x007d0000,
120 	},
121 };
122 
123 static struct physmap_flash_data dns323_nor_flash_data = {
124 	.width		= 1,
125 	.parts		= dns323_partitions,
126 	.nr_parts	= ARRAY_SIZE(dns323_partitions)
127 };
128 
129 static struct resource dns323_nor_flash_resource = {
130 	.flags		= IORESOURCE_MEM,
131 	.start		= DNS323_NOR_BOOT_BASE,
132 	.end		= DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
133 };
134 
135 static struct platform_device dns323_nor_flash = {
136 	.name		= "physmap-flash",
137 	.id		= 0,
138 	.dev		= {
139 		.platform_data	= &dns323_nor_flash_data,
140 	},
141 	.resource	= &dns323_nor_flash_resource,
142 	.num_resources	= 1,
143 };
144 
145 /****************************************************************************
146  * GPIO LEDs (simple - doesn't use hardware blinking support)
147  */
148 
149 static struct gpio_led dns323_leds[] = {
150 	{
151 		.name = "power:blue",
152 		.gpio = DNS323_GPIO_LED_POWER,
153 		.active_low = 1,
154 	}, {
155 		.name = "right:amber",
156 		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
157 		.active_low = 1,
158 	}, {
159 		.name = "left:amber",
160 		.gpio = DNS323_GPIO_LED_LEFT_AMBER,
161 		.active_low = 1,
162 	},
163 };
164 
165 static struct gpio_led_platform_data dns323_led_data = {
166 	.num_leds	= ARRAY_SIZE(dns323_leds),
167 	.leds		= dns323_leds,
168 };
169 
170 static struct platform_device dns323_gpio_leds = {
171 	.name		= "leds-gpio",
172 	.id		= -1,
173 	.dev		= {
174 		.platform_data	= &dns323_led_data,
175 	},
176 };
177 
178 /****************************************************************************
179  * GPIO Attached Keys
180  */
181 
182 static struct gpio_keys_button dns323_buttons[] = {
183 	{
184 		.code		= KEY_RESTART,
185 		.gpio		= DNS323_GPIO_KEY_RESET,
186 		.desc		= "Reset Button",
187 		.active_low	= 1,
188 	}, {
189 		.code		= KEY_POWER,
190 		.gpio		= DNS323_GPIO_KEY_POWER,
191 		.desc		= "Power Button",
192 		.active_low	= 1,
193 	},
194 };
195 
196 static struct gpio_keys_platform_data dns323_button_data = {
197 	.buttons	= dns323_buttons,
198 	.nbuttons	= ARRAY_SIZE(dns323_buttons),
199 };
200 
201 static struct platform_device dns323_button_device = {
202 	.name		= "gpio-keys",
203 	.id		= -1,
204 	.num_resources	= 0,
205 	.dev		= {
206 		.platform_data	= &dns323_button_data,
207 	},
208 };
209 
210 /****************************************************************************
211  * General Setup
212  */
213 static struct orion5x_mpp_mode dns323_mpp_modes[] __initdata = {
214 	{  0, MPP_PCIE_RST_OUTn },
215 	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */
216 	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */
217 	{  3, MPP_UNUSED },
218 	{  4, MPP_GPIO },		/* power button LED */
219 	{  5, MPP_GPIO },		/* power button LED */
220 	{  6, MPP_GPIO },		/* GMT G751-2f overtemp */
221 	{  7, MPP_GPIO },		/* M41T80 nIRQ/OUT/SQW */
222 	{  8, MPP_GPIO },		/* triggers power off */
223 	{  9, MPP_GPIO },		/* power button switch */
224 	{ 10, MPP_GPIO },		/* reset button switch */
225 	{ 11, MPP_UNUSED },
226 	{ 12, MPP_UNUSED },
227 	{ 13, MPP_UNUSED },
228 	{ 14, MPP_UNUSED },
229 	{ 15, MPP_UNUSED },
230 	{ 16, MPP_UNUSED },
231 	{ 17, MPP_UNUSED },
232 	{ 18, MPP_UNUSED },
233 	{ 19, MPP_UNUSED },
234 	{ -1 },
235 };
236 
237 /*
238  * On the DNS-323 the following devices are attached via I2C:
239  *
240  *  i2c addr | chip        | description
241  *  0x3e     | GMT G760Af  | fan speed PWM controller
242  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
243  *  0x68     | ST M41T80   | RTC w/ alarm
244  */
245 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
246 	{
247 		I2C_BOARD_INFO("g760a", 0x3e),
248 	}, {
249 		I2C_BOARD_INFO("lm75", 0x48),
250 	}, {
251 		I2C_BOARD_INFO("m41t80", 0x68),
252 	},
253 };
254 
255 /* DNS-323 specific power off method */
256 static void dns323_power_off(void)
257 {
258 	pr_info("%s: triggering power-off...\n", __func__);
259 	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
260 }
261 
262 static void __init dns323_init(void)
263 {
264 	/* Setup basic Orion functions. Need to be called early. */
265 	orion5x_init();
266 
267 	orion5x_mpp_conf(dns323_mpp_modes);
268 	writel(0, MPP_DEV_CTRL);		/* DEV_D[31:16] */
269 
270 	/*
271 	 * Configure peripherals.
272 	 */
273 	orion5x_ehci0_init();
274 	orion5x_eth_init(&dns323_eth_data);
275 	orion5x_i2c_init();
276 	orion5x_uart0_init();
277 
278 	/* setup flash mapping
279 	 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
280 	 */
281 	orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
282 	platform_device_register(&dns323_nor_flash);
283 
284 	platform_device_register(&dns323_gpio_leds);
285 
286 	platform_device_register(&dns323_button_device);
287 
288 	i2c_register_board_info(0, dns323_i2c_devices,
289 				ARRAY_SIZE(dns323_i2c_devices));
290 
291 	/* register dns323 specific power-off method */
292 	if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
293 	    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
294 		pr_err("DNS323: failed to setup power-off GPIO\n");
295 	pm_power_off = dns323_power_off;
296 }
297 
298 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
299 MACHINE_START(DNS323, "D-Link DNS-323")
300 	/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
301 	.phys_io	= ORION5X_REGS_PHYS_BASE,
302 	.io_pg_offst	= ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
303 	.boot_params	= 0x00000100,
304 	.init_machine	= dns323_init,
305 	.map_io		= orion5x_map_io,
306 	.init_irq	= orion5x_init_irq,
307 	.timer		= &orion5x_timer,
308 	.fixup		= tag_fixup_mem32,
309 MACHINE_END
310