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 "pxa25x.h"
  35 #include "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_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
  87                  SMC91X_USE_DMA | SMC91X_NOWAIT,
  88 };
  89
  90 static struct platform_device smc91x_device = {
  91         .name           = "smc91x",
  92         .id             = 0,
  93         .num_resources  = ARRAY_SIZE(smc91x_resources),
  94         .resource       = smc91x_resources,
  95         .dev.platform_data = &smc91x_platdata,
  96 };
  97
  98 static void idp_backlight_power(int on)
  99 {
 100         if (on) {
 101                 IDP_CPLD_LCD |= (1<<1);
 102         } else {
 103                 IDP_CPLD_LCD &= ~(1<<1);
 104         }
 105 }
 106
 107 static void idp_vlcd(int on)
 108 {
 109         if (on) {
 110                 IDP_CPLD_LCD |= (1<<2);
 111         } else {
 112                 IDP_CPLD_LCD &= ~(1<<2);
 113         }
 114 }
 115
 116 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 117 {
 118         if (on) {
 119                 IDP_CPLD_LCD |= (1<<0);
 120         } else {
 121                 IDP_CPLD_LCD &= ~(1<<0);
 122         }
 123
 124         /* call idp_vlcd for now as core driver does not support
 125          * both power and vlcd hooks.  Note, this is not technically
 126          * the correct sequence, but seems to work.  Disclaimer:
 127          * this may eventually damage the display.
 128          */
 129
 130         idp_vlcd(on);
 131 }
 132
 133 static struct pxafb_mode_info sharp_lm8v31_mode = {
 134         .pixclock       = 270000,
 135         .xres           = 640,
 136         .yres           = 480,
 137         .bpp            = 16,
 138         .hsync_len      = 1,
 139         .left_margin    = 3,
 140         .right_margin   = 3,
 141         .vsync_len      = 1,
 142         .upper_margin   = 0,
 143         .lower_margin   = 0,
 144         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 145         .cmap_greyscale = 0,
 146 };
 147
 148 static struct pxafb_mach_info sharp_lm8v31 = {
 149         .modes          = &sharp_lm8v31_mode,
 150         .num_modes      = 1,
 151         .cmap_inverse   = 0,
 152         .cmap_static    = 0,
 153         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 154                           LCD_AC_BIAS_FREQ(255),
 155         .pxafb_backlight_power = &idp_backlight_power,
 156         .pxafb_lcd_power = &idp_lcd_power
 157 };
 158
 159 static struct pxamci_platform_data idp_mci_platform_data = {
 160         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 161         .gpio_card_detect       = -1,
 162         .gpio_card_ro           = -1,
 163         .gpio_power             = -1,
 164 };
 165
 166 static void __init idp_init(void)
 167 {
 168         printk("idp_init()\n");
 169
 170         pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 171         pxa_set_ffuart_info(NULL);
 172         pxa_set_btuart_info(NULL);
 173         pxa_set_stuart_info(NULL);
 174
 175         platform_device_register(&smc91x_device);
 176         //platform_device_register(&mst_audio_device);
 177         pxa_set_fb_info(NULL, &sharp_lm8v31);
 178         pxa_set_mci_info(&idp_mci_platform_data);
 179 }
 180
 181 static struct map_desc idp_io_desc[] __initdata = {
 182         {
 183                 .virtual        =  IDP_COREVOLT_VIRT,
 184                 .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 185                 .length         = IDP_COREVOLT_SIZE,
 186                 .type           = MT_DEVICE
 187         }, {
 188                 .virtual        =  IDP_CPLD_VIRT,
 189                 .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 190                 .length         = IDP_CPLD_SIZE,
 191                 .type           = MT_DEVICE
 192         }
 193 };
 194
 195 static void __init idp_map_io(void)
 196 {
 197         pxa25x_map_io();
 198         iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 199 }
 200
 201 /* LEDs */
 202 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 203 struct idp_led {
 204         struct led_classdev     cdev;
 205         u8                      mask;
 206 };
 207
 208 /*
 209  * The triggers lines up below will only be used if the
 210  * LED triggers are compiled in.
 211  */
 212 static const struct {
 213         const char *name;
 214         const char *trigger;
 215 } idp_leds[] = {
 216         { "idp:green", "heartbeat", },
 217         { "idp:red", "cpu0", },
 218 };
 219
 220 static void idp_led_set(struct led_classdev *cdev,
 221                 enum led_brightness b)
 222 {
 223         struct idp_led *led = container_of(cdev,
 224                         struct idp_led, cdev);
 225         u32 reg = IDP_CPLD_LED_CONTROL;
 226
 227         if (b != LED_OFF)
 228                 reg &= ~led->mask;
 229         else
 230                 reg |= led->mask;
 231
 232         IDP_CPLD_LED_CONTROL = reg;
 233 }
 234
 235 static enum led_brightness idp_led_get(struct led_classdev *cdev)
 236 {
 237         struct idp_led *led = container_of(cdev,
 238                         struct idp_led, cdev);
 239
 240         return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 241 }
 242
 243 static int __init idp_leds_init(void)
 244 {
 245         int i;
 246
 247         if (!machine_is_pxa_idp())
 248                 return -ENODEV;
 249
 250         for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 251                 struct idp_led *led;
 252
 253                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 254                 if (!led)
 255                         break;
 256
 257                 led->cdev.name = idp_leds[i].name;
 258                 led->cdev.brightness_set = idp_led_set;
 259                 led->cdev.brightness_get = idp_led_get;
 260                 led->cdev.default_trigger = idp_leds[i].trigger;
 261
 262                 if (i == 0)
 263                         led->mask = IDP_HB_LED;
 264                 else
 265                         led->mask = IDP_BUSY_LED;
 266
 267                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 268                         kfree(led);
 269                         break;
 270                 }
 271         }
 272
 273         return 0;
 274 }
 275
 276 /*
 277  * Since we may have triggers on any subsystem, defer registration
 278  * until after subsystem_init.
 279  */
 280 fs_initcall(idp_leds_init);
 281 #endif
 282
 283 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 284         /* Maintainer: Vibren Technologies */
 285         .map_io         = idp_map_io,
 286         .nr_irqs        = PXA_NR_IRQS,
 287         .init_irq       = pxa25x_init_irq,
 288         .handle_irq     = pxa25x_handle_irq,
 289         .init_time      = pxa_timer_init,
 290         .init_machine   = idp_init,
 291         .restart        = pxa_restart,
 292 MACHINE_END