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 "pxa27x.h"
  34 #include "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         .init_time      = pxa_timer_init,
 267         .init_machine   = pcm027_init,
 268         .restart        = pxa_restart,
 269 MACHINE_END