linux/arch/arm/mach-pxa/idp.c
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   1/*
   2 *  linux/arch/arm/mach-pxa/idp.c
   3 *
   4 *  This program is free software; you can redistribute it and/or modify
   5 *  it under the terms of the GNU General Public License version 2 as
   6 *  published by the Free Software Foundation.
   7 *
   8 *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
   9 *
  10 *  2001-09-13: Cliff Brake <cbrake@accelent.com>
  11 *              Initial code
  12 *
  13 *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
  14 *              <http://www.vibren.com> <http://bec-systems.com>
  15 *              Updated for 2.6 kernel
  16 *
  17 */
  18
  19#include <linux/init.h>
  20#include <linux/interrupt.h>
  21#include <linux/irq.h>
  22#include <linux/platform_device.h>
  23#include <linux/fb.h>
  24
  25#include <asm/setup.h>
  26#include <asm/memory.h>
  27#include <asm/mach-types.h>
  28#include <mach/hardware.h>
  29#include <asm/irq.h>
  30
  31#include <asm/mach/arch.h>
  32#include <asm/mach/map.h>
  33
  34#include <mach/pxa25x.h>
  35#include <mach/idp.h>
  36#include <linux/platform_data/video-pxafb.h>
  37#include <mach/bitfield.h>
  38#include <linux/platform_data/mmc-pxamci.h>
  39
  40#include "generic.h"
  41#include "devices.h"
  42
  43/* TODO:
  44 * - add pxa2xx_audio_ops_t device structure
  45 * - Ethernet interrupt
  46 */
  47
  48static unsigned long idp_pin_config[] __initdata = {
  49        /* LCD */
  50        GPIOxx_LCD_DSTN_16BPP,
  51
  52        /* BTUART */
  53        GPIO42_BTUART_RXD,
  54        GPIO43_BTUART_TXD,
  55        GPIO44_BTUART_CTS,
  56        GPIO45_BTUART_RTS,
  57
  58        /* STUART */
  59        GPIO46_STUART_RXD,
  60        GPIO47_STUART_TXD,
  61
  62        /* MMC */
  63        GPIO6_MMC_CLK,
  64        GPIO8_MMC_CS0,
  65
  66        /* Ethernet */
  67        GPIO33_nCS_5,   /* Ethernet CS */
  68        GPIO4_GPIO,     /* Ethernet IRQ */
  69};
  70
  71static struct resource smc91x_resources[] = {
  72        [0] = {
  73                .start  = (IDP_ETH_PHYS + 0x300),
  74                .end    = (IDP_ETH_PHYS + 0xfffff),
  75                .flags  = IORESOURCE_MEM,
  76        },
  77        [1] = {
  78                .start  = PXA_GPIO_TO_IRQ(4),
  79                .end    = PXA_GPIO_TO_IRQ(4),
  80                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  81        }
  82};
  83
  84static struct platform_device smc91x_device = {
  85        .name           = "smc91x",
  86        .id             = 0,
  87        .num_resources  = ARRAY_SIZE(smc91x_resources),
  88        .resource       = smc91x_resources,
  89};
  90
  91static void idp_backlight_power(int on)
  92{
  93        if (on) {
  94                IDP_CPLD_LCD |= (1<<1);
  95        } else {
  96                IDP_CPLD_LCD &= ~(1<<1);
  97        }
  98}
  99
 100static void idp_vlcd(int on)
 101{
 102        if (on) {
 103                IDP_CPLD_LCD |= (1<<2);
 104        } else {
 105                IDP_CPLD_LCD &= ~(1<<2);
 106        }
 107}
 108
 109static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 110{
 111        if (on) {
 112                IDP_CPLD_LCD |= (1<<0);
 113        } else {
 114                IDP_CPLD_LCD &= ~(1<<0);
 115        }
 116
 117        /* call idp_vlcd for now as core driver does not support
 118         * both power and vlcd hooks.  Note, this is not technically
 119         * the correct sequence, but seems to work.  Disclaimer:
 120         * this may eventually damage the display.
 121         */
 122
 123        idp_vlcd(on);
 124}
 125
 126static struct pxafb_mode_info sharp_lm8v31_mode = {
 127        .pixclock       = 270000,
 128        .xres           = 640,
 129        .yres           = 480,
 130        .bpp            = 16,
 131        .hsync_len      = 1,
 132        .left_margin    = 3,
 133        .right_margin   = 3,
 134        .vsync_len      = 1,
 135        .upper_margin   = 0,
 136        .lower_margin   = 0,
 137        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 138        .cmap_greyscale = 0,
 139};
 140
 141static struct pxafb_mach_info sharp_lm8v31 = {
 142        .modes          = &sharp_lm8v31_mode,
 143        .num_modes      = 1,
 144        .cmap_inverse   = 0,
 145        .cmap_static    = 0,
 146        .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 147                          LCD_AC_BIAS_FREQ(255),
 148        .pxafb_backlight_power = &idp_backlight_power,
 149        .pxafb_lcd_power = &idp_lcd_power
 150};
 151
 152static struct pxamci_platform_data idp_mci_platform_data = {
 153        .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 154        .gpio_card_detect       = -1,
 155        .gpio_card_ro           = -1,
 156        .gpio_power             = -1,
 157};
 158
 159static void __init idp_init(void)
 160{
 161        printk("idp_init()\n");
 162
 163        pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 164        pxa_set_ffuart_info(NULL);
 165        pxa_set_btuart_info(NULL);
 166        pxa_set_stuart_info(NULL);
 167
 168        platform_device_register(&smc91x_device);
 169        //platform_device_register(&mst_audio_device);
 170        pxa_set_fb_info(NULL, &sharp_lm8v31);
 171        pxa_set_mci_info(&idp_mci_platform_data);
 172}
 173
 174static struct map_desc idp_io_desc[] __initdata = {
 175        {
 176                .virtual        =  IDP_COREVOLT_VIRT,
 177                .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 178                .length         = IDP_COREVOLT_SIZE,
 179                .type           = MT_DEVICE
 180        }, {
 181                .virtual        =  IDP_CPLD_VIRT,
 182                .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 183                .length         = IDP_CPLD_SIZE,
 184                .type           = MT_DEVICE
 185        }
 186};
 187
 188static void __init idp_map_io(void)
 189{
 190        pxa25x_map_io();
 191        iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 192}
 193
 194/* LEDs */
 195#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 196struct idp_led {
 197        struct led_classdev     cdev;
 198        u8                      mask;
 199};
 200
 201/*
 202 * The triggers lines up below will only be used if the
 203 * LED triggers are compiled in.
 204 */
 205static const struct {
 206        const char *name;
 207        const char *trigger;
 208} idp_leds[] = {
 209        { "idp:green", "heartbeat", },
 210        { "idp:red", "cpu0", },
 211};
 212
 213static void idp_led_set(struct led_classdev *cdev,
 214                enum led_brightness b)
 215{
 216        struct idp_led *led = container_of(cdev,
 217                        struct idp_led, cdev);
 218        u32 reg = IDP_CPLD_LED_CONTROL;
 219
 220        if (b != LED_OFF)
 221                reg &= ~led->mask;
 222        else
 223                reg |= led->mask;
 224
 225        IDP_CPLD_LED_CONTROL = reg;
 226}
 227
 228static enum led_brightness idp_led_get(struct led_classdev *cdev)
 229{
 230        struct idp_led *led = container_of(cdev,
 231                        struct idp_led, cdev);
 232
 233        return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 234}
 235
 236static int __init idp_leds_init(void)
 237{
 238        int i;
 239
 240        if (!machine_is_pxa_idp())
 241                return -ENODEV;
 242
 243        for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 244                struct idp_led *led;
 245
 246                led = kzalloc(sizeof(*led), GFP_KERNEL);
 247                if (!led)
 248                        break;
 249
 250                led->cdev.name = idp_leds[i].name;
 251                led->cdev.brightness_set = idp_led_set;
 252                led->cdev.brightness_get = idp_led_get;
 253                led->cdev.default_trigger = idp_leds[i].trigger;
 254
 255                if (i == 0)
 256                        led->mask = IDP_HB_LED;
 257                else
 258                        led->mask = IDP_BUSY_LED;
 259
 260                if (led_classdev_register(NULL, &led->cdev) < 0) {
 261                        kfree(led);
 262                        break;
 263                }
 264        }
 265
 266        return 0;
 267}
 268
 269/*
 270 * Since we may have triggers on any subsystem, defer registration
 271 * until after subsystem_init.
 272 */
 273fs_initcall(idp_leds_init);
 274#endif
 275
 276MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 277        /* Maintainer: Vibren Technologies */
 278        .map_io         = idp_map_io,
 279        .nr_irqs        = PXA_NR_IRQS,
 280        .init_irq       = pxa25x_init_irq,
 281        .handle_irq     = pxa25x_handle_irq,
 282        .init_time      = pxa_timer_init,
 283        .init_machine   = idp_init,
 284        .restart        = pxa_restart,
 285MACHINE_END
 286