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