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
 86static 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 */
111static 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
125static 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 */
135static struct pxa2xx_spi_master pxa_ssp_master_info = {
136	.num_chipselect	= 1,
137};
138
139static struct max7301_platform_data max7301_info = {
140	.base = -1,
141};
142
143/* bus_num must match id in pxa2xx_set_spi_info() call */
144static 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 */
158static struct physmap_flash_data pcm027_flash_data = {
159	.width  = 4,
160};
161
162static 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
168static 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
180static 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
191static struct gpio_led_platform_data pcm027_led_data = {
192	.num_leds	= ARRAY_SIZE(pcm027_led),
193	.leds		= pcm027_led
194};
195
196static 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 */
209static 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 */
220static 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
245static 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
259MACHINE_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	.init_time	= pxa_timer_init,
267	.init_machine	= pcm027_init,
268	.restart	= pxa_restart,
269MACHINE_END