Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / arch / arm / mach-orion5x / dns323-setup.c
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
44 static 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
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_pci_init(void)
69 {
70         if (machine_is_dns323())
71                 pci_common_init(&dns323_pci);
72
73         return 0;
74 }
75
76 subsys_initcall(dns323_pci_init);
77
78 /****************************************************************************
79  * Ethernet
80  */
81
82 static 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
101 static 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
125 static struct physmap_flash_data dns323_nor_flash_data = {
126         .width          = 1,
127         .parts          = dns323_partitions,
128         .nr_parts       = ARRAY_SIZE(dns323_partitions)
129 };
130
131 static 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
137 static struct platform_device dns323_nor_flash = {
138         .name           = "physmap-flash",
139         .id             = 0,
140         .dev            = { .platform_data = &dns323_nor_flash_data, },
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            = { .platform_data = &dns323_led_data, },
174 };
175
176 /****************************************************************************
177  * GPIO Attached Keys
178  */
179
180 static struct gpio_keys_button dns323_buttons[] = {
181         {
182                 .code           = KEY_RESTART,
183                 .gpio           = DNS323_GPIO_KEY_RESET,
184                 .desc           = "Reset Button",
185                 .active_low     = 1,
186         },
187         {
188                 .code           = KEY_POWER,
189                 .gpio           = DNS323_GPIO_KEY_POWER,
190                 .desc           = "Power Button",
191                 .active_low     = 1,
192         }
193 };
194
195 static struct gpio_keys_platform_data dns323_button_data = {
196         .buttons        = dns323_buttons,
197         .nbuttons       = ARRAY_SIZE(dns323_buttons),
198 };
199
200 static struct platform_device dns323_button_device = {
201         .name           = "gpio-keys",
202         .id             = -1,
203         .num_resources  = 0,
204         .dev            = { .platform_data  = &dns323_button_data, },
205 };
206
207 /****************************************************************************
208  * General Setup
209  */
210
211 static struct platform_device *dns323_plat_devices[] __initdata = {
212         &dns323_nor_flash,
213         &dns323_gpio_leds,
214         &dns323_button_device,
215 };
216
217 /*
218  * On the DNS-323 the following devices are attached via I2C:
219  *
220  *  i2c addr | chip        | description
221  *  0x3e     | GMT G760Af  | fan speed PWM controller
222  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
223  *  0x68     | ST M41T80   | RTC w/ alarm
224  */
225 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
226         {
227                 I2C_BOARD_INFO("g760a", 0x3e),
228         },
229 #if 0
230         /* this entry requires the new-style driver model lm75 driver,
231          * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
232         {
233                 I2C_BOARD_INFO("g751", 0x48),
234         },
235 #endif
236         {
237                 I2C_BOARD_INFO("m41t80", 0x68),
238         }
239 };
240
241 /* DNS-323 specific power off method */
242 static void dns323_power_off(void)
243 {
244         pr_info("%s: triggering power-off...\n", __func__);
245         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
246 }
247
248 static void __init dns323_init(void)
249 {
250         /* Setup basic Orion functions. Need to be called early. */
251         orion5x_init();
252
253         /* setup flash mapping
254          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
255          */
256         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
257
258         /* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIe
259          *
260          * Open a special address decode windows for the PCIe WA.
261          */
262         orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
263                                 ORION5X_PCIE_WA_SIZE);
264
265         /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
266         orion5x_write(MPP_0_7_CTRL, 0);
267         orion5x_write(MPP_8_15_CTRL, 0);
268         orion5x_write(MPP_16_19_CTRL, 0);
269         orion5x_write(MPP_DEV_CTRL, 0);
270
271         /* Define used GPIO pins
272
273           GPIO Map:
274
275           |  0 |     | PEX_RST_OUT (not controlled by GPIO)
276           |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
277           |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
278           |  3 | Out | //unknown//
279           |  4 | Out | power button LED (low-active, together with pin #5)
280           |  5 | Out | power button LED (low-active, together with pin #4)
281           |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
282           |  7 | In  | M41T80 nIRQ/OUT/SQW signal
283           |  8 | Out | triggers power off (high-active)
284           |  9 | In  | power button switch (low-active)
285           | 10 | In  | reset button switch (low-active)
286           | 11 | Out | //unknown//
287           | 12 | Out | //unknown//
288           | 13 | Out | //unknown//
289           | 14 | Out | //unknown//
290           | 15 | Out | //unknown//
291         */
292         orion5x_gpio_set_valid_pins(0x07f6);
293
294         /* register dns323 specific power-off method */
295         if ((gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0)
296             || (gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0))
297                 pr_err("DNS323: failed to setup power-off GPIO\n");
298
299         pm_power_off = dns323_power_off;
300
301         /* register flash and other platform devices */
302         platform_add_devices(dns323_plat_devices,
303                              ARRAY_SIZE(dns323_plat_devices));
304
305         i2c_register_board_info(0, dns323_i2c_devices,
306                                 ARRAY_SIZE(dns323_i2c_devices));
307
308         orion5x_eth_init(&dns323_eth_data);
309 }
310
311 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
312 MACHINE_START(DNS323, "D-Link DNS-323")
313         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
314         .phys_io        = ORION5X_REGS_PHYS_BASE,
315         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
316         .boot_params    = 0x00000100,
317         .init_machine   = dns323_init,
318         .map_io         = orion5x_map_io,
319         .init_irq       = orion5x_init_irq,
320         .timer          = &orion5x_timer,
321         .fixup          = tag_fixup_mem32,
322 MACHINE_END