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 <mach/hardware.h>
  33 #include <mach/pxa-regs.h>
  34 #include <mach/mfp-pxa27x.h>
  35 #include <mach/pxa2xx-regs.h>
  36 #include <mach/pxa2xx_spi.h>
  37 #include <mach/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 static unsigned long pcm027_pin_config[] __initdata = {
  90         /* Chip Selects */
  91         GPIO20_nSDCS_2,
  92         GPIO21_nSDCS_3,
  93         GPIO15_nCS_1,
  94         GPIO78_nCS_2,
  95         GPIO80_nCS_4,
  96         GPIO33_nCS_5,   /* Ethernet */
  97
  98         /* I2C */
  99         GPIO117_I2C_SCL,
 100         GPIO118_I2C_SDA,
 101
 102         /* GPIO */
 103         GPIO52_GPIO,    /* IRQ from network controller */
 104 #ifdef CONFIG_LEDS_GPIO
 105         GPIO90_GPIO,    /* PCM027_LED_CPU */
 106         GPIO91_GPIO,    /* PCM027_LED_HEART_BEAT */
 107 #endif
 108         GPIO114_GPIO,   /* IRQ from CAN controller */
 109 };
 110
 111 /*
 112  * SMC91x network controller specific stuff
 113  */
 114 static struct resource smc91x_resources[] = {
 115         [0] = {
 116                 .start  = PCM027_ETH_PHYS + 0x300,
 117                 .end    = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
 118                 .flags  = IORESOURCE_MEM,
 119         },
 120         [1] = {
 121                 .start  = PCM027_ETH_IRQ,
 122                 .end    = PCM027_ETH_IRQ,
 123                 /* note: smc91x's driver doesn't use the trigger bits yet */
 124                 .flags  = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
 125         }
 126 };
 127
 128 static struct platform_device smc91x_device = {
 129         .name           = "smc91x",
 130         .id             = 0,
 131         .num_resources  = ARRAY_SIZE(smc91x_resources),
 132         .resource       = smc91x_resources,
 133 };
 134
 135 /*
 136  * SPI host and devices
 137  */
 138 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 139         .num_chipselect = 1,
 140 };
 141
 142 static struct max7301_platform_data max7301_info = {
 143         .base = -1,
 144 };
 145
 146 /* bus_num must match id in pxa2xx_set_spi_info() call */
 147 static struct spi_board_info spi_board_info[] __initdata = {
 148         {
 149                 .modalias       = "max7301",
 150                 .platform_data  = &max7301_info,
 151                 .max_speed_hz   = 13000000,
 152                 .bus_num        = 1,
 153                 .chip_select    = 0,
 154                 .mode           = SPI_MODE_0,
 155         },
 156 };
 157
 158 /*
 159  * NOR flash
 160  */
 161 static struct physmap_flash_data pcm027_flash_data = {
 162         .width  = 4,
 163 };
 164
 165 static struct resource pcm027_flash_resource = {
 166         .start          = PCM027_FLASH_PHYS,
 167         .end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
 168         .flags          = IORESOURCE_MEM,
 169 };
 170
 171 static struct platform_device pcm027_flash = {
 172         .name           = "physmap-flash",
 173         .id             = 0,
 174         .dev            = {
 175                 .platform_data  = &pcm027_flash_data,
 176         },
 177         .resource       = &pcm027_flash_resource,
 178         .num_resources  = 1,
 179 };
 180
 181 #ifdef CONFIG_LEDS_GPIO
 182
 183 static struct gpio_led pcm027_led[] = {
 184         {
 185                 .name = "led0:red",     /* FIXME */
 186                 .gpio = PCM027_LED_CPU
 187         },
 188         {
 189                 .name = "led1:green",   /* FIXME */
 190                 .gpio = PCM027_LED_HEARD_BEAT
 191         },
 192 };
 193
 194 static struct gpio_led_platform_data pcm027_led_data = {
 195         .num_leds       = ARRAY_SIZE(pcm027_led),
 196         .leds           = pcm027_led
 197 };
 198
 199 static struct platform_device pcm027_led_dev = {
 200         .name           = "leds-gpio",
 201         .id             = 0,
 202         .dev            = {
 203                 .platform_data  = &pcm027_led_data,
 204         },
 205 };
 206
 207 #endif /* CONFIG_LEDS_GPIO */
 208
 209 /*
 210  * declare the available device resources on this board
 211  */
 212 static struct platform_device *devices[] __initdata = {
 213         &smc91x_device,
 214         &pcm027_flash,
 215 #ifdef CONFIG_LEDS_GPIO
 216         &pcm027_led_dev
 217 #endif
 218 };
 219
 220 /*
 221  * pcm027_init - breath some life into the board
 222  */
 223 static void __init pcm027_init(void)
 224 {
 225         /* system bus arbiter setting
 226          * - Core_Park
 227          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 228          */
 229         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 230
 231         pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
 232
 233         platform_add_devices(devices, ARRAY_SIZE(devices));
 234
 235         /* at last call the baseboard to initialize itself */
 236 #ifdef CONFIG_MACH_PCM990_BASEBOARD
 237         pcm990_baseboard_init();
 238 #endif
 239
 240         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 241         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 242 }
 243
 244 static void __init pcm027_map_io(void)
 245 {
 246         pxa_map_io();
 247
 248         /* initialize sleep mode regs (wake-up sources, etc) */
 249         PGSR0 = 0x01308000;
 250         PGSR1 = 0x00CF0002;
 251         PGSR2 = 0x0E294000;
 252         PGSR3 = 0x0000C000;
 253         PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
 254         PRER  = 0x00000000;
 255         PFER  = 0x00000003;
 256 }
 257
 258 MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
 259         /* Maintainer: Pengutronix */
 260         .boot_params    = 0xa0000100,
 261         .phys_io        = 0x40000000,
 262         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 263         .map_io         = pcm027_map_io,
 264         .init_irq       = pxa27x_init_irq,
 265         .timer          = &pxa_timer,
 266         .init_machine   = pcm027_init,
 267 MACHINE_END