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/leds.h>
  23#include <linux/platform_device.h>
  24#include <linux/fb.h>
  25
  26#include <asm/setup.h>
  27#include <asm/memory.h>
  28#include <asm/mach-types.h>
  29#include <mach/hardware.h>
  30#include <asm/irq.h>
  31
  32#include <asm/mach/arch.h>
  33#include <asm/mach/map.h>
  34
  35#include "pxa25x.h"
  36#include "idp.h"
  37#include <linux/platform_data/video-pxafb.h>
  38#include <mach/bitfield.h>
  39#include <linux/platform_data/mmc-pxamci.h>
  40#include <linux/smc91x.h>
  41
  42#include "generic.h"
  43#include "devices.h"
  44
  45/* TODO:
  46 * - add pxa2xx_audio_ops_t device structure
  47 * - Ethernet interrupt
  48 */
  49
  50static unsigned long idp_pin_config[] __initdata = {
  51        /* LCD */
  52        GPIOxx_LCD_DSTN_16BPP,
  53
  54        /* BTUART */
  55        GPIO42_BTUART_RXD,
  56        GPIO43_BTUART_TXD,
  57        GPIO44_BTUART_CTS,
  58        GPIO45_BTUART_RTS,
  59
  60        /* STUART */
  61        GPIO46_STUART_RXD,
  62        GPIO47_STUART_TXD,
  63
  64        /* MMC */
  65        GPIO6_MMC_CLK,
  66        GPIO8_MMC_CS0,
  67
  68        /* Ethernet */
  69        GPIO33_nCS_5,   /* Ethernet CS */
  70        GPIO4_GPIO,     /* Ethernet IRQ */
  71};
  72
  73static struct resource smc91x_resources[] = {
  74        [0] = {
  75                .start  = (IDP_ETH_PHYS + 0x300),
  76                .end    = (IDP_ETH_PHYS + 0xfffff),
  77                .flags  = IORESOURCE_MEM,
  78        },
  79        [1] = {
  80                .start  = PXA_GPIO_TO_IRQ(4),
  81                .end    = PXA_GPIO_TO_IRQ(4),
  82                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  83        }
  84};
  85
  86static struct smc91x_platdata smc91x_platdata = {
  87        .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
  88                 SMC91X_USE_DMA | SMC91X_NOWAIT,
  89        .pxa_u16_align4 = true,
  90};
  91
  92static struct platform_device smc91x_device = {
  93        .name           = "smc91x",
  94        .id             = 0,
  95        .num_resources  = ARRAY_SIZE(smc91x_resources),
  96        .resource       = smc91x_resources,
  97        .dev.platform_data = &smc91x_platdata,
  98};
  99
 100static void idp_backlight_power(int on)
 101{
 102        if (on) {
 103                IDP_CPLD_LCD |= (1<<1);
 104        } else {
 105                IDP_CPLD_LCD &= ~(1<<1);
 106        }
 107}
 108
 109static void idp_vlcd(int on)
 110{
 111        if (on) {
 112                IDP_CPLD_LCD |= (1<<2);
 113        } else {
 114                IDP_CPLD_LCD &= ~(1<<2);
 115        }
 116}
 117
 118static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 119{
 120        if (on) {
 121                IDP_CPLD_LCD |= (1<<0);
 122        } else {
 123                IDP_CPLD_LCD &= ~(1<<0);
 124        }
 125
 126        /* call idp_vlcd for now as core driver does not support
 127         * both power and vlcd hooks.  Note, this is not technically
 128         * the correct sequence, but seems to work.  Disclaimer:
 129         * this may eventually damage the display.
 130         */
 131
 132        idp_vlcd(on);
 133}
 134
 135static struct pxafb_mode_info sharp_lm8v31_mode = {
 136        .pixclock       = 270000,
 137        .xres           = 640,
 138        .yres           = 480,
 139        .bpp            = 16,
 140        .hsync_len      = 1,
 141        .left_margin    = 3,
 142        .right_margin   = 3,
 143        .vsync_len      = 1,
 144        .upper_margin   = 0,
 145        .lower_margin   = 0,
 146        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 147        .cmap_greyscale = 0,
 148};
 149
 150static struct pxafb_mach_info sharp_lm8v31 = {
 151        .modes          = &sharp_lm8v31_mode,
 152        .num_modes      = 1,
 153        .cmap_inverse   = 0,
 154        .cmap_static    = 0,
 155        .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 156                          LCD_AC_BIAS_FREQ(255),
 157        .pxafb_backlight_power = &idp_backlight_power,
 158        .pxafb_lcd_power = &idp_lcd_power
 159};
 160
 161static struct pxamci_platform_data idp_mci_platform_data = {
 162        .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 163        .gpio_card_detect       = -1,
 164        .gpio_card_ro           = -1,
 165        .gpio_power             = -1,
 166};
 167
 168static void __init idp_init(void)
 169{
 170        printk("idp_init()\n");
 171
 172        pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 173        pxa_set_ffuart_info(NULL);
 174        pxa_set_btuart_info(NULL);
 175        pxa_set_stuart_info(NULL);
 176
 177        platform_device_register(&smc91x_device);
 178        //platform_device_register(&mst_audio_device);
 179        pxa_set_fb_info(NULL, &sharp_lm8v31);
 180        pxa_set_mci_info(&idp_mci_platform_data);
 181}
 182
 183static struct map_desc idp_io_desc[] __initdata = {
 184        {
 185                .virtual        =  IDP_COREVOLT_VIRT,
 186                .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 187                .length         = IDP_COREVOLT_SIZE,
 188                .type           = MT_DEVICE
 189        }, {
 190                .virtual        =  IDP_CPLD_VIRT,
 191                .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 192                .length         = IDP_CPLD_SIZE,
 193                .type           = MT_DEVICE
 194        }
 195};
 196
 197static void __init idp_map_io(void)
 198{
 199        pxa25x_map_io();
 200        iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 201}
 202
 203/* LEDs */
 204#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 205struct idp_led {
 206        struct led_classdev     cdev;
 207        u8                      mask;
 208};
 209
 210/*
 211 * The triggers lines up below will only be used if the
 212 * LED triggers are compiled in.
 213 */
 214static const struct {
 215        const char *name;
 216        const char *trigger;
 217} idp_leds[] = {
 218        { "idp:green", "heartbeat", },
 219        { "idp:red", "cpu0", },
 220};
 221
 222static void idp_led_set(struct led_classdev *cdev,
 223                enum led_brightness b)
 224{
 225        struct idp_led *led = container_of(cdev,
 226                        struct idp_led, cdev);
 227        u32 reg = IDP_CPLD_LED_CONTROL;
 228
 229        if (b != LED_OFF)
 230                reg &= ~led->mask;
 231        else
 232                reg |= led->mask;
 233
 234        IDP_CPLD_LED_CONTROL = reg;
 235}
 236
 237static enum led_brightness idp_led_get(struct led_classdev *cdev)
 238{
 239        struct idp_led *led = container_of(cdev,
 240                        struct idp_led, cdev);
 241
 242        return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 243}
 244
 245static int __init idp_leds_init(void)
 246{
 247        int i;
 248
 249        if (!machine_is_pxa_idp())
 250                return -ENODEV;
 251
 252        for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 253                struct idp_led *led;
 254
 255                led = kzalloc(sizeof(*led), GFP_KERNEL);
 256                if (!led)
 257                        break;
 258
 259                led->cdev.name = idp_leds[i].name;
 260                led->cdev.brightness_set = idp_led_set;
 261                led->cdev.brightness_get = idp_led_get;
 262                led->cdev.default_trigger = idp_leds[i].trigger;
 263
 264                if (i == 0)
 265                        led->mask = IDP_HB_LED;
 266                else
 267                        led->mask = IDP_BUSY_LED;
 268
 269                if (led_classdev_register(NULL, &led->cdev) < 0) {
 270                        kfree(led);
 271                        break;
 272                }
 273        }
 274
 275        return 0;
 276}
 277
 278/*
 279 * Since we may have triggers on any subsystem, defer registration
 280 * until after subsystem_init.
 281 */
 282fs_initcall(idp_leds_init);
 283#endif
 284
 285MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 286        /* Maintainer: Vibren Technologies */
 287        .map_io         = idp_map_io,
 288        .nr_irqs        = PXA_NR_IRQS,
 289        .init_irq       = pxa25x_init_irq,
 290        .handle_irq     = pxa25x_handle_irq,
 291        .init_time      = pxa_timer_init,
 292        .init_machine   = idp_init,
 293        .restart        = pxa_restart,
 294MACHINE_END
 295