arch/arm/mach-pxa/idp.c

   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
  48 static 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
  71 static 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
  84 static struct smc91x_platdata smc91x_platdata = {
  85         .flags = SMC91X_USE_32BIT | SMC91X_USE_DMA | SMC91X_NOWAIT,
  86 };
  87
  88 static struct platform_device smc91x_device = {
  89         .name           = "smc91x",
  90         .id             = 0,
  91         .num_resources  = ARRAY_SIZE(smc91x_resources),
  92         .resource       = smc91x_resources,
  93         .dev.platform_data = &smc91x_platdata,
  94 };
  95
  96 static void idp_backlight_power(int on)
  97 {
  98         if (on) {
  99                 IDP_CPLD_LCD |= (1<<1);
 100         } else {
 101                 IDP_CPLD_LCD &= ~(1<<1);
 102         }
 103 }
 104
 105 static void idp_vlcd(int on)
 106 {
 107         if (on) {
 108                 IDP_CPLD_LCD |= (1<<2);
 109         } else {
 110                 IDP_CPLD_LCD &= ~(1<<2);
 111         }
 112 }
 113
 114 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 115 {
 116         if (on) {
 117                 IDP_CPLD_LCD |= (1<<0);
 118         } else {
 119                 IDP_CPLD_LCD &= ~(1<<0);
 120         }
 121
 122         /* call idp_vlcd for now as core driver does not support
 123          * both power and vlcd hooks.  Note, this is not technically
 124          * the correct sequence, but seems to work.  Disclaimer:
 125          * this may eventually damage the display.
 126          */
 127
 128         idp_vlcd(on);
 129 }
 130
 131 static struct pxafb_mode_info sharp_lm8v31_mode = {
 132         .pixclock       = 270000,
 133         .xres           = 640,
 134         .yres           = 480,
 135         .bpp            = 16,
 136         .hsync_len      = 1,
 137         .left_margin    = 3,
 138         .right_margin   = 3,
 139         .vsync_len      = 1,
 140         .upper_margin   = 0,
 141         .lower_margin   = 0,
 142         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 143         .cmap_greyscale = 0,
 144 };
 145
 146 static struct pxafb_mach_info sharp_lm8v31 = {
 147         .modes          = &sharp_lm8v31_mode,
 148         .num_modes      = 1,
 149         .cmap_inverse   = 0,
 150         .cmap_static    = 0,
 151         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 152                           LCD_AC_BIAS_FREQ(255),
 153         .pxafb_backlight_power = &idp_backlight_power,
 154         .pxafb_lcd_power = &idp_lcd_power
 155 };
 156
 157 static struct pxamci_platform_data idp_mci_platform_data = {
 158         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 159         .gpio_card_detect       = -1,
 160         .gpio_card_ro           = -1,
 161         .gpio_power             = -1,
 162 };
 163
 164 static void __init idp_init(void)
 165 {
 166         printk("idp_init()\n");
 167
 168         pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 169         pxa_set_ffuart_info(NULL);
 170         pxa_set_btuart_info(NULL);
 171         pxa_set_stuart_info(NULL);
 172
 173         platform_device_register(&smc91x_device);
 174         //platform_device_register(&mst_audio_device);
 175         pxa_set_fb_info(NULL, &sharp_lm8v31);
 176         pxa_set_mci_info(&idp_mci_platform_data);
 177 }
 178
 179 static struct map_desc idp_io_desc[] __initdata = {
 180         {
 181                 .virtual        =  IDP_COREVOLT_VIRT,
 182                 .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 183                 .length         = IDP_COREVOLT_SIZE,
 184                 .type           = MT_DEVICE
 185         }, {
 186                 .virtual        =  IDP_CPLD_VIRT,
 187                 .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 188                 .length         = IDP_CPLD_SIZE,
 189                 .type           = MT_DEVICE
 190         }
 191 };
 192
 193 static void __init idp_map_io(void)
 194 {
 195         pxa25x_map_io();
 196         iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 197 }
 198
 199 /* LEDs */
 200 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 201 struct idp_led {
 202         struct led_classdev     cdev;
 203         u8                      mask;
 204 };
 205
 206 /*
 207  * The triggers lines up below will only be used if the
 208  * LED triggers are compiled in.
 209  */
 210 static const struct {
 211         const char *name;
 212         const char *trigger;
 213 } idp_leds[] = {
 214         { "idp:green", "heartbeat", },
 215         { "idp:red", "cpu0", },
 216 };
 217
 218 static void idp_led_set(struct led_classdev *cdev,
 219                 enum led_brightness b)
 220 {
 221         struct idp_led *led = container_of(cdev,
 222                         struct idp_led, cdev);
 223         u32 reg = IDP_CPLD_LED_CONTROL;
 224
 225         if (b != LED_OFF)
 226                 reg &= ~led->mask;
 227         else
 228                 reg |= led->mask;
 229
 230         IDP_CPLD_LED_CONTROL = reg;
 231 }
 232
 233 static enum led_brightness idp_led_get(struct led_classdev *cdev)
 234 {
 235         struct idp_led *led = container_of(cdev,
 236                         struct idp_led, cdev);
 237
 238         return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 239 }
 240
 241 static int __init idp_leds_init(void)
 242 {
 243         int i;
 244
 245         if (!machine_is_pxa_idp())
 246                 return -ENODEV;
 247
 248         for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 249                 struct idp_led *led;
 250
 251                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 252                 if (!led)
 253                         break;
 254
 255                 led->cdev.name = idp_leds[i].name;
 256                 led->cdev.brightness_set = idp_led_set;
 257                 led->cdev.brightness_get = idp_led_get;
 258                 led->cdev.default_trigger = idp_leds[i].trigger;
 259
 260                 if (i == 0)
 261                         led->mask = IDP_HB_LED;
 262                 else
 263                         led->mask = IDP_BUSY_LED;
 264
 265                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 266                         kfree(led);
 267                         break;
 268                 }
 269         }
 270
 271         return 0;
 272 }
 273
 274 /*
 275  * Since we may have triggers on any subsystem, defer registration
 276  * until after subsystem_init.
 277  */
 278 fs_initcall(idp_leds_init);
 279 #endif
 280
 281 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 282         /* Maintainer: Vibren Technologies */
 283         .map_io         = idp_map_io,
 284         .nr_irqs        = PXA_NR_IRQS,
 285         .init_irq       = pxa25x_init_irq,
 286         .handle_irq     = pxa25x_handle_irq,
 287         .init_time      = pxa_timer_init,
 288         .init_machine   = idp_init,
 289         .restart        = pxa_restart,
 290 MACHINE_END