Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak...
[pandora-kernel.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/leds.h>
29
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/arch/hardware.h>
33 #include <asm/arch/pxa-regs.h>
34 #include <asm/arch/pxa2xx-gpio.h>
35 #include <asm/arch/pxa2xx-regs.h>
36 #include <asm/arch/pxa2xx_spi.h>
37 #include <asm/arch/pcm027.h>
38 #include "generic.h"
39
40 /*
41  * ABSTRACT:
42  *
43  * The PXA270 processor comes with a bunch of hardware on its silicon.
44  * Not all of this hardware can be used at the same time and not all
45  * is routed to module's connectors. Also it depends on the baseboard, what
46  * kind of hardware can be used in which way.
47  * -> So this file supports the main devices on the CPU card only!
48  * Refer pcm990-baseboard.c how to extend this features to get a full
49  * blown system with many common interfaces.
50  *
51  * The PCM-027 supports the following interfaces through its connectors and
52  * will be used in pcm990-baseboard.c:
53  *
54  * - LCD support
55  * - MMC support
56  * - IDE/CF card
57  * - FFUART
58  * - BTUART
59  * - IRUART
60  * - AC97
61  * - SSP
62  * - SSP3
63  *
64  * Claimed GPIOs:
65  * GPIO0 -> IRQ input from RTC
66  * GPIO2 -> SYS_ENA*)
67  * GPIO3 -> PWR_SCL
68  * GPIO4 -> PWR_SDA
69  * GPIO5 -> PowerCap0*)
70  * GPIO6 -> PowerCap1*)
71  * GPIO7 -> PowerCap2*)
72  * GPIO8 -> PowerCap3*)
73  * GPIO15 -> /CS1
74  * GPIO20 -> /CS2
75  * GPIO21 -> /CS3
76  * GPIO33 -> /CS5 network controller select
77  * GPIO52 -> IRQ from network controller
78  * GPIO78 -> /CS2
79  * GPIO80 -> /CS4
80  * GPIO90 -> LED0
81  * GPIO91 -> LED1
82  * GPIO114 -> IRQ from CAN controller
83  * GPIO117 -> SCL
84  * GPIO118 -> SDA
85  *
86  * *) CPU internal use only
87  */
88
89 /*
90  * SMC91x network controller specific stuff
91  */
92 static struct resource smc91x_resources[] = {
93         [0] = {
94                 .start  = PCM027_ETH_PHYS + 0x300,
95                 .end    = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
96                 .flags  = IORESOURCE_MEM,
97         },
98         [1] = {
99                 .start  = PCM027_ETH_IRQ,
100                 .end    = PCM027_ETH_IRQ,
101                 /* note: smc91x's driver doesn't use the trigger bits yet */
102                 .flags  = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
103         }
104 };
105
106 static struct platform_device smc91x_device = {
107         .name           = "smc91x",
108         .id             = 0,
109         .num_resources  = ARRAY_SIZE(smc91x_resources),
110         .resource       = smc91x_resources,
111 };
112
113 /*
114  * SPI host and devices
115  */
116 static struct pxa2xx_spi_master pxa_ssp_master_info = {
117         .num_chipselect = 1,
118 };
119
120 static struct max7301_platform_data max7301_info = {
121         .base = -1,
122 };
123
124 /* bus_num must match id in pxa2xx_set_spi_info() call */
125 static struct spi_board_info spi_board_info[] __initdata = {
126         {
127                 .modalias       = "max7301",
128                 .platform_data  = &max7301_info,
129                 .max_speed_hz   = 13000000,
130                 .bus_num        = 1,
131                 .chip_select    = 0,
132                 .mode           = SPI_MODE_0,
133         },
134 };
135
136 /*
137  * NOR flash
138  */
139 static struct physmap_flash_data pcm027_flash_data = {
140         .width  = 4,
141 };
142
143 static struct resource pcm027_flash_resource = {
144         .start          = PCM027_FLASH_PHYS,
145         .end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
146         .flags          = IORESOURCE_MEM,
147 };
148
149 static struct platform_device pcm027_flash = {
150         .name           = "physmap-flash",
151         .id             = 0,
152         .dev            = {
153                 .platform_data  = &pcm027_flash_data,
154         },
155         .resource       = &pcm027_flash_resource,
156         .num_resources  = 1,
157 };
158
159 #ifdef CONFIG_LEDS_GPIO
160
161 static struct gpio_led pcm027_led[] = {
162         {
163                 .name = "led0:red",     /* FIXME */
164                 .gpio = PCM027_LED_CPU
165         },
166         {
167                 .name = "led1:green",   /* FIXME */
168                 .gpio = PCM027_LED_HEARD_BEAT
169         },
170 };
171
172 static struct gpio_led_platform_data pcm027_led_data = {
173         .num_leds       = ARRAY_SIZE(pcm027_led),
174         .leds           = pcm027_led
175 };
176
177 static struct platform_device pcm027_led_dev = {
178         .name           = "leds-gpio",
179         .id             = 0,
180         .dev            = {
181                 .platform_data  = &pcm027_led_data,
182         },
183 };
184
185 #endif /* CONFIG_LEDS_GPIO */
186
187 /*
188  * declare the available device resources on this board
189  */
190 static struct platform_device *devices[] __initdata = {
191         &smc91x_device,
192         &pcm027_flash,
193 #ifdef CONFIG_LEDS_GPIO
194         &pcm027_led_dev
195 #endif
196 };
197
198 /*
199  * pcm027_init - breath some life into the board
200  */
201 static void __init pcm027_init(void)
202 {
203         /* system bus arbiter setting
204          * - Core_Park
205          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
206          */
207         ARB_CNTRL = ARB_CORE_PARK | 0x234;
208
209         platform_add_devices(devices, ARRAY_SIZE(devices));
210
211         /* LEDs (on demand only) */
212 #ifdef CONFIG_LEDS_GPIO
213         pxa_gpio_mode(PCM027_LED_CPU | GPIO_OUT);
214         pxa_gpio_mode(PCM027_LED_HEARD_BEAT | GPIO_OUT);
215 #endif /* CONFIG_LEDS_GPIO */
216
217         /* at last call the baseboard to initialize itself */
218 #ifdef CONFIG_MACH_PCM990_BASEBOARD
219         pcm990_baseboard_init();
220 #endif
221
222         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
223         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
224 }
225
226 static void __init pcm027_map_io(void)
227 {
228         pxa_map_io();
229
230         /* initialize sleep mode regs (wake-up sources, etc) */
231         PGSR0 = 0x01308000;
232         PGSR1 = 0x00CF0002;
233         PGSR2 = 0x0E294000;
234         PGSR3 = 0x0000C000;
235         PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
236         PRER  = 0x00000000;
237         PFER  = 0x00000003;
238 }
239
240 MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
241         /* Maintainer: Pengutronix */
242         .boot_params    = 0xa0000100,
243         .phys_io        = 0x40000000,
244         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
245         .map_io         = pcm027_map_io,
246         .init_irq       = pxa27x_init_irq,
247         .timer          = &pxa_timer,
248         .init_machine   = pcm027_init,
249 MACHINE_END