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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/leds.h>
28#include <asm/mach-types.h>
29#include <asm/mach/arch.h>
30#include <asm/arch/hardware.h>
31#include <asm/arch/pxa-regs.h>
32#include <asm/arch/pxa2xx_spi.h>
33#include <asm/arch/pcm027.h>
34#include "generic.h"
35
36/*
37 * ABSTRACT:
38 *
39 * The PXA270 processor comes with a bunch of hardware on its silicon.
40 * Not all of this hardware can be used at the same time and not all
41 * is routed to module's connectors. Also it depends on the baseboard, what
42 * kind of hardware can be used in which way.
43 * -> So this file supports the main devices on the CPU card only!
44 * Refer pcm990-baseboard.c how to extend this features to get a full
45 * blown system with many common interfaces.
46 *
47 * The PCM-027 supports the following interfaces through its connectors and
48 * will be used in pcm990-baseboard.c:
49 *
50 * - LCD support
51 * - MMC support
52 * - IDE/CF card
53 * - FFUART
54 * - BTUART
55 * - IRUART
56 * - AC97
57 * - SSP
58 * - SSP3
59 *
60 * Claimed GPIOs:
61 * GPIO0 -> IRQ input from RTC
62 * GPIO2 -> SYS_ENA*)
63 * GPIO3 -> PWR_SCL
64 * GPIO4 -> PWR_SDA
65 * GPIO5 -> PowerCap0*)
66 * GPIO6 -> PowerCap1*)
67 * GPIO7 -> PowerCap2*)
68 * GPIO8 -> PowerCap3*)
69 * GPIO15 -> /CS1
70 * GPIO20 -> /CS2
71 * GPIO21 -> /CS3
72 * GPIO33 -> /CS5 network controller select
73 * GPIO52 -> IRQ from network controller
74 * GPIO78 -> /CS2
75 * GPIO80 -> /CS4
76 * GPIO90 -> LED0
77 * GPIO91 -> LED1
78 * GPIO114 -> IRQ from CAN controller
79 * GPIO117 -> SCL
80 * GPIO118 -> SDA
81 *
82 * *) CPU internal use only
83 */
84
85/*
86 * SMC91x network controller specific stuff
87 */
88static struct resource smc91x_resources[] = {
89 [0] = {
90 .start = PCM027_ETH_PHYS + 0x300,
91 .end = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
92 .flags = IORESOURCE_MEM,
93 },
94 [1] = {
95 .start = PCM027_ETH_IRQ,
96 .end = PCM027_ETH_IRQ,
97 /* note: smc91x's driver doesn't use the trigger bits yet */
98 .flags = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
99 }
100};
101
102static struct platform_device smc91x_device = {
103 .name = "smc91x",
104 .id = 0,
105 .num_resources = ARRAY_SIZE(smc91x_resources),
106 .resource = smc91x_resources,
107};
108
109static struct physmap_flash_data pcm027_flash_data = {
110 .width = 4,
111};
112
113static struct resource pcm027_flash_resource = {
114 .start = PCM027_FLASH_PHYS,
115 .end = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
116 .flags = IORESOURCE_MEM,
117};
118
119static struct platform_device pcm027_flash = {
120 .name = "physmap-flash",
121 .id = 0,
122 .dev = {
123 .platform_data = &pcm027_flash_data,
124 },
125 .resource = &pcm027_flash_resource,
126 .num_resources = 1,
127};
128
129#ifdef CONFIG_LEDS_GPIO
130
131static struct gpio_led pcm027_led[] = {
132 {
133 .name = "led0:red", /* FIXME */
134 .gpio = PCM027_LED_CPU
135 },
136 {
137 .name = "led1:green", /* FIXME */
138 .gpio = PCM027_LED_HEARD_BEAT
139 },
140};
141
142static struct gpio_led_platform_data pcm027_led_data = {
143 .num_leds = ARRAY_SIZE(pcm027_led),
144 .leds = pcm027_led
145};
146
147static struct platform_device pcm027_led_dev = {
148 .name = "leds-gpio",
149 .id = 0,
150 .dev = {
151 .platform_data = &pcm027_led_data,
152 },
153};
154
155#endif /* CONFIG_LEDS_GPIO */
156
157/*
158 * declare the available device resources on this board
159 */
160static struct platform_device *devices[] __initdata = {
161 &smc91x_device,
162 &pcm027_flash,
163#ifdef CONFIG_LEDS_GPIO
164 &pcm027_led_dev
165#endif
166};
167
168/*
169 * pcm027_init - breath some life into the board
170 */
171static void __init pcm027_init(void)
172{
173 /* system bus arbiter setting
174 * - Core_Park
175 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
176 */
177 ARB_CNTRL = ARB_CORE_PARK | 0x234;
178
179 platform_add_devices(devices, ARRAY_SIZE(devices));
180
181 /* LEDs (on demand only) */
182#ifdef CONFIG_LEDS_GPIO
183 pxa_gpio_mode(PCM027_LED_CPU | GPIO_OUT);
184 pxa_gpio_mode(PCM027_LED_HEARD_BEAT | GPIO_OUT);
185#endif /* CONFIG_LEDS_GPIO */
186
187 /* at last call the baseboard to initialize itself */
188#ifdef CONFIG_MACH_PCM990_BASEBOARD
189 pcm990_baseboard_init();
190#endif
191}
192
193static void __init pcm027_map_io(void)
194{
195 pxa_map_io();
196
197 /* initialize sleep mode regs (wake-up sources, etc) */
198 PGSR0 = 0x01308000;
199 PGSR1 = 0x00CF0002;
200 PGSR2 = 0x0E294000;
201 PGSR3 = 0x0000C000;
202 PWER = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
203 PRER = 0x00000000;
204 PFER = 0x00000003;
205}
206
207MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
208 /* Maintainer: Pengutronix */
209 .boot_params = 0xa0000100,
210 .phys_io = 0x40000000,
211 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
212 .map_io = pcm027_map_io,
213 .init_irq = pxa27x_init_irq,
214 .timer = &pxa_timer,
215 .init_machine = pcm027_init,
216MACHINE_END
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