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         .pxa_u16_align4 = true,
  89 };
  90
  91 static struct platform_device smc91x_device = {
  92         .name           = "smc91x",
  93         .id             = 0,
  94         .num_resources  = ARRAY_SIZE(smc91x_resources),
  95         .resource       = smc91x_resources,
  96         .dev.platform_data = &smc91x_platdata,
  97 };
  98
  99 static void idp_backlight_power(int on)
 100 {
 101         if (on) {
 102                 IDP_CPLD_LCD |= (1<<1);
 103         } else {
 104                 IDP_CPLD_LCD &= ~(1<<1);
 105         }
 106 }
 107
 108 static void idp_vlcd(int on)
 109 {
 110         if (on) {
 111                 IDP_CPLD_LCD |= (1<<2);
 112         } else {
 113                 IDP_CPLD_LCD &= ~(1<<2);
 114         }
 115 }
 116
 117 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 118 {
 119         if (on) {
 120                 IDP_CPLD_LCD |= (1<<0);
 121         } else {
 122                 IDP_CPLD_LCD &= ~(1<<0);
 123         }
 124
 125         /* call idp_vlcd for now as core driver does not support
 126          * both power and vlcd hooks.  Note, this is not technically
 127          * the correct sequence, but seems to work.  Disclaimer:
 128          * this may eventually damage the display.
 129          */
 130
 131         idp_vlcd(on);
 132 }
 133
 134 static struct pxafb_mode_info sharp_lm8v31_mode = {
 135         .pixclock       = 270000,
 136         .xres           = 640,
 137         .yres           = 480,
 138         .bpp            = 16,
 139         .hsync_len      = 1,
 140         .left_margin    = 3,
 141         .right_margin   = 3,
 142         .vsync_len      = 1,
 143         .upper_margin   = 0,
 144         .lower_margin   = 0,
 145         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 146         .cmap_greyscale = 0,
 147 };
 148
 149 static struct pxafb_mach_info sharp_lm8v31 = {
 150         .modes          = &sharp_lm8v31_mode,
 151         .num_modes      = 1,
 152         .cmap_inverse   = 0,
 153         .cmap_static    = 0,
 154         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 155                           LCD_AC_BIAS_FREQ(255),
 156         .pxafb_backlight_power = &idp_backlight_power,
 157         .pxafb_lcd_power = &idp_lcd_power
 158 };
 159
 160 static struct pxamci_platform_data idp_mci_platform_data = {
 161         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 162         .gpio_card_detect       = -1,
 163         .gpio_card_ro           = -1,
 164         .gpio_power             = -1,
 165 };
 166
 167 static void __init idp_init(void)
 168 {
 169         printk("idp_init()\n");
 170
 171         pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 172         pxa_set_ffuart_info(NULL);
 173         pxa_set_btuart_info(NULL);
 174         pxa_set_stuart_info(NULL);
 175
 176         platform_device_register(&smc91x_device);
 177         //platform_device_register(&mst_audio_device);
 178         pxa_set_fb_info(NULL, &sharp_lm8v31);
 179         pxa_set_mci_info(&idp_mci_platform_data);
 180 }
 181
 182 static struct map_desc idp_io_desc[] __initdata = {
 183         {
 184                 .virtual        =  IDP_COREVOLT_VIRT,
 185                 .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 186                 .length         = IDP_COREVOLT_SIZE,
 187                 .type           = MT_DEVICE
 188         }, {
 189                 .virtual        =  IDP_CPLD_VIRT,
 190                 .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 191                 .length         = IDP_CPLD_SIZE,
 192                 .type           = MT_DEVICE
 193         }
 194 };
 195
 196 static void __init idp_map_io(void)
 197 {
 198         pxa25x_map_io();
 199         iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 200 }
 201
 202 /* LEDs */
 203 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 204 struct idp_led {
 205         struct led_classdev     cdev;
 206         u8                      mask;
 207 };
 208
 209 /*
 210  * The triggers lines up below will only be used if the
 211  * LED triggers are compiled in.
 212  */
 213 static const struct {
 214         const char *name;
 215         const char *trigger;
 216 } idp_leds[] = {
 217         { "idp:green", "heartbeat", },
 218         { "idp:red", "cpu0", },
 219 };
 220
 221 static void idp_led_set(struct led_classdev *cdev,
 222                 enum led_brightness b)
 223 {
 224         struct idp_led *led = container_of(cdev,
 225                         struct idp_led, cdev);
 226         u32 reg = IDP_CPLD_LED_CONTROL;
 227
 228         if (b != LED_OFF)
 229                 reg &= ~led->mask;
 230         else
 231                 reg |= led->mask;
 232
 233         IDP_CPLD_LED_CONTROL = reg;
 234 }
 235
 236 static enum led_brightness idp_led_get(struct led_classdev *cdev)
 237 {
 238         struct idp_led *led = container_of(cdev,
 239                         struct idp_led, cdev);
 240
 241         return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 242 }
 243
 244 static int __init idp_leds_init(void)
 245 {
 246         int i;
 247
 248         if (!machine_is_pxa_idp())
 249                 return -ENODEV;
 250
 251         for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 252                 struct idp_led *led;
 253
 254                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 255                 if (!led)
 256                         break;
 257
 258                 led->cdev.name = idp_leds[i].name;
 259                 led->cdev.brightness_set = idp_led_set;
 260                 led->cdev.brightness_get = idp_led_get;
 261                 led->cdev.default_trigger = idp_leds[i].trigger;
 262
 263                 if (i == 0)
 264                         led->mask = IDP_HB_LED;
 265                 else
 266                         led->mask = IDP_BUSY_LED;
 267
 268                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 269                         kfree(led);
 270                         break;
 271                 }
 272         }
 273
 274         return 0;
 275 }
 276
 277 /*
 278  * Since we may have triggers on any subsystem, defer registration
 279  * until after subsystem_init.
 280  */
 281 fs_initcall(idp_leds_init);
 282 #endif
 283
 284 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 285         /* Maintainer: Vibren Technologies */
 286         .map_io         = idp_map_io,
 287         .nr_irqs        = PXA_NR_IRQS,
 288         .init_irq       = pxa25x_init_irq,
 289         .handle_irq     = pxa25x_handle_irq,
 290         .init_time      = pxa_timer_init,
 291         .init_machine   = idp_init,
 292         .restart        = pxa_restart,
 293 MACHINE_END