ARM: restart: pxa: use new restart hook
[linux-2.6.git] / arch / arm / mach-pxa / pcm027.c
1 /*
2  *  linux/arch/arm/mach-pxa/pcm027.c
3  *  Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
4  *
5  *  Refer
6  *   http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
7  *  for additional hardware info
8  *
9  *  Author:     Juergen Kilb
10  *  Created:    April 05, 2005
11  *  Copyright:  Phytec Messtechnik GmbH
12  *  e-Mail:     armlinux@phytec.de
13  *
14  *  based on Intel Mainstone Board
15  *
16  *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
17  *
18  *  This program is free software; you can redistribute it and/or modify
19  *  it under the terms of the GNU General Public License version 2 as
20  *  published by the Free Software Foundation.
21  */
22
23 #include <linux/irq.h>
24 #include <linux/platform_device.h>
25 #include <linux/mtd/physmap.h>
26 #include <linux/spi/spi.h>
27 #include <linux/spi/max7301.h>
28 #include <linux/spi/pxa2xx_spi.h>
29 #include <linux/leds.h>
30
31 #include <asm/mach-types.h>
32 #include <asm/mach/arch.h>
33 #include <mach/pxa27x.h>
34 #include <mach/pcm027.h>
35 #include "generic.h"
36
37 /*
38  * ABSTRACT:
39  *
40  * The PXA270 processor comes with a bunch of hardware on its silicon.
41  * Not all of this hardware can be used at the same time and not all
42  * is routed to module's connectors. Also it depends on the baseboard, what
43  * kind of hardware can be used in which way.
44  * -> So this file supports the main devices on the CPU card only!
45  * Refer pcm990-baseboard.c how to extend this features to get a full
46  * blown system with many common interfaces.
47  *
48  * The PCM-027 supports the following interfaces through its connectors and
49  * will be used in pcm990-baseboard.c:
50  *
51  * - LCD support
52  * - MMC support
53  * - IDE/CF card
54  * - FFUART
55  * - BTUART
56  * - IRUART
57  * - AC97
58  * - SSP
59  * - SSP3
60  *
61  * Claimed GPIOs:
62  * GPIO0 -> IRQ input from RTC
63  * GPIO2 -> SYS_ENA*)
64  * GPIO3 -> PWR_SCL
65  * GPIO4 -> PWR_SDA
66  * GPIO5 -> PowerCap0*)
67  * GPIO6 -> PowerCap1*)
68  * GPIO7 -> PowerCap2*)
69  * GPIO8 -> PowerCap3*)
70  * GPIO15 -> /CS1
71  * GPIO20 -> /CS2
72  * GPIO21 -> /CS3
73  * GPIO33 -> /CS5 network controller select
74  * GPIO52 -> IRQ from network controller
75  * GPIO78 -> /CS2
76  * GPIO80 -> /CS4
77  * GPIO90 -> LED0
78  * GPIO91 -> LED1
79  * GPIO114 -> IRQ from CAN controller
80  * GPIO117 -> SCL
81  * GPIO118 -> SDA
82  *
83  * *) CPU internal use only
84  */
85
86 static unsigned long pcm027_pin_config[] __initdata = {
87         /* Chip Selects */
88         GPIO20_nSDCS_2,
89         GPIO21_nSDCS_3,
90         GPIO15_nCS_1,
91         GPIO78_nCS_2,
92         GPIO80_nCS_4,
93         GPIO33_nCS_5,   /* Ethernet */
94
95         /* I2C */
96         GPIO117_I2C_SCL,
97         GPIO118_I2C_SDA,
98
99         /* GPIO */
100         GPIO52_GPIO,    /* IRQ from network controller */
101 #ifdef CONFIG_LEDS_GPIO
102         GPIO90_GPIO,    /* PCM027_LED_CPU */
103         GPIO91_GPIO,    /* PCM027_LED_HEART_BEAT */
104 #endif
105         GPIO114_GPIO,   /* IRQ from CAN controller */
106 };
107
108 /*
109  * SMC91x network controller specific stuff
110  */
111 static struct resource smc91x_resources[] = {
112         [0] = {
113                 .start  = PCM027_ETH_PHYS + 0x300,
114                 .end    = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
115                 .flags  = IORESOURCE_MEM,
116         },
117         [1] = {
118                 .start  = PCM027_ETH_IRQ,
119                 .end    = PCM027_ETH_IRQ,
120                 /* note: smc91x's driver doesn't use the trigger bits yet */
121                 .flags  = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
122         }
123 };
124
125 static struct platform_device smc91x_device = {
126         .name           = "smc91x",
127         .id             = 0,
128         .num_resources  = ARRAY_SIZE(smc91x_resources),
129         .resource       = smc91x_resources,
130 };
131
132 /*
133  * SPI host and devices
134  */
135 static struct pxa2xx_spi_master pxa_ssp_master_info = {
136         .num_chipselect = 1,
137 };
138
139 static struct max7301_platform_data max7301_info = {
140         .base = -1,
141 };
142
143 /* bus_num must match id in pxa2xx_set_spi_info() call */
144 static struct spi_board_info spi_board_info[] __initdata = {
145         {
146                 .modalias       = "max7301",
147                 .platform_data  = &max7301_info,
148                 .max_speed_hz   = 13000000,
149                 .bus_num        = 1,
150                 .chip_select    = 0,
151                 .mode           = SPI_MODE_0,
152         },
153 };
154
155 /*
156  * NOR flash
157  */
158 static struct physmap_flash_data pcm027_flash_data = {
159         .width  = 4,
160 };
161
162 static struct resource pcm027_flash_resource = {
163         .start          = PCM027_FLASH_PHYS,
164         .end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
165         .flags          = IORESOURCE_MEM,
166 };
167
168 static struct platform_device pcm027_flash = {
169         .name           = "physmap-flash",
170         .id             = 0,
171         .dev            = {
172                 .platform_data  = &pcm027_flash_data,
173         },
174         .resource       = &pcm027_flash_resource,
175         .num_resources  = 1,
176 };
177
178 #ifdef CONFIG_LEDS_GPIO
179
180 static struct gpio_led pcm027_led[] = {
181         {
182                 .name = "led0:red",     /* FIXME */
183                 .gpio = PCM027_LED_CPU
184         },
185         {
186                 .name = "led1:green",   /* FIXME */
187                 .gpio = PCM027_LED_HEARD_BEAT
188         },
189 };
190
191 static struct gpio_led_platform_data pcm027_led_data = {
192         .num_leds       = ARRAY_SIZE(pcm027_led),
193         .leds           = pcm027_led
194 };
195
196 static struct platform_device pcm027_led_dev = {
197         .name           = "leds-gpio",
198         .id             = 0,
199         .dev            = {
200                 .platform_data  = &pcm027_led_data,
201         },
202 };
203
204 #endif /* CONFIG_LEDS_GPIO */
205
206 /*
207  * declare the available device resources on this board
208  */
209 static struct platform_device *devices[] __initdata = {
210         &smc91x_device,
211         &pcm027_flash,
212 #ifdef CONFIG_LEDS_GPIO
213         &pcm027_led_dev
214 #endif
215 };
216
217 /*
218  * pcm027_init - breath some life into the board
219  */
220 static void __init pcm027_init(void)
221 {
222         /* system bus arbiter setting
223          * - Core_Park
224          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
225          */
226         ARB_CNTRL = ARB_CORE_PARK | 0x234;
227
228         pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
229
230         pxa_set_ffuart_info(NULL);
231         pxa_set_btuart_info(NULL);
232         pxa_set_stuart_info(NULL);
233
234         platform_add_devices(devices, ARRAY_SIZE(devices));
235
236         /* at last call the baseboard to initialize itself */
237 #ifdef CONFIG_MACH_PCM990_BASEBOARD
238         pcm990_baseboard_init();
239 #endif
240
241         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
242         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
243 }
244
245 static void __init pcm027_map_io(void)
246 {
247         pxa27x_map_io();
248
249         /* initialize sleep mode regs (wake-up sources, etc) */
250         PGSR0 = 0x01308000;
251         PGSR1 = 0x00CF0002;
252         PGSR2 = 0x0E294000;
253         PGSR3 = 0x0000C000;
254         PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
255         PRER  = 0x00000000;
256         PFER  = 0x00000003;
257 }
258
259 MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
260         /* Maintainer: Pengutronix */
261         .atag_offset    = 0x100,
262         .map_io         = pcm027_map_io,
263         .nr_irqs        = PCM027_NR_IRQS,
264         .init_irq       = pxa27x_init_irq,
265         .handle_irq     = pxa27x_handle_irq,
266         .timer          = &pxa_timer,
267         .init_machine   = pcm027_init,
268         .restart        = pxa_restart,
269 MACHINE_END