arch/arm/mach-pxa/balloon3.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/balloon3.c
   3  *
   4  *  Support for Balloonboard.org Balloon3 board.
   5  *
   6  *  Author:     Nick Bane, Wookey, Jonathan McDowell
   7  *  Created:    June, 2006
   8  *  Copyright:  Toby Churchill Ltd
   9  *  Derived from mainstone.c, by Nico Pitre
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License version 2 as
  13  *  published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/bitops.h>
  22 #include <linux/fb.h>
  23 #include <linux/gpio.h>
  24 #include <linux/ioport.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/types.h>
  28
  29 #include <asm/setup.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/irq.h>
  32 #include <asm/sizes.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/irq.h>
  37 #include <asm/mach/flash.h>
  38
  39 #include <mach/pxa27x.h>
  40 #include <mach/balloon3.h>
  41 #include <mach/audio.h>
  42 #include <mach/pxafb.h>
  43 #include <mach/mmc.h>
  44 #include <mach/udc.h>
  45 #include <mach/pxa27x-udc.h>
  46 #include <mach/irda.h>
  47 #include <mach/ohci.h>
  48
  49 #include <plat/i2c.h>
  50
  51 #include "generic.h"
  52 #include "devices.h"
  53
  54 static unsigned long balloon3_irq_enabled;
  55
  56 static unsigned long balloon3_features_present =
  57                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
  58                 (1 << BALLOON3_FEATURE_AUDIO) |
  59                 (1 << BALLOON3_FEATURE_TOPPOLY);
  60
  61 int balloon3_has(enum balloon3_features feature)
  62 {
  63         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
  64 }
  65 EXPORT_SYMBOL_GPL(balloon3_has);
  66
  67 int __init parse_balloon3_features(char *arg)
  68 {
  69         if (!arg)
  70                 return 0;
  71
  72         return strict_strtoul(arg, 0, &balloon3_features_present);
  73 }
  74 early_param("balloon3_features", parse_balloon3_features);
  75
  76 static void balloon3_mask_irq(unsigned int irq)
  77 {
  78         int balloon3_irq = (irq - BALLOON3_IRQ(0));
  79         balloon3_irq_enabled &= ~(1 << balloon3_irq);
  80         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
  81 }
  82
  83 static void balloon3_unmask_irq(unsigned int irq)
  84 {
  85         int balloon3_irq = (irq - BALLOON3_IRQ(0));
  86         balloon3_irq_enabled |= (1 << balloon3_irq);
  87         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
  88 }
  89
  90 static struct irq_chip balloon3_irq_chip = {
  91         .name           = "FPGA",
  92         .ack            = balloon3_mask_irq,
  93         .mask           = balloon3_mask_irq,
  94         .unmask         = balloon3_unmask_irq,
  95 };
  96
  97 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
  98 {
  99         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 100                                         balloon3_irq_enabled;
 101
 102         do {
 103                 /* clear useless edge notification */
 104                 if (desc->chip->ack)
 105                         desc->chip->ack(BALLOON3_AUX_NIRQ);
 106                 while (pending) {
 107                         irq = BALLOON3_IRQ(0) + __ffs(pending);
 108                         generic_handle_irq(irq);
 109                         pending &= pending - 1;
 110                 }
 111                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 112                                 balloon3_irq_enabled;
 113         } while (pending);
 114 }
 115
 116 static void __init balloon3_init_irq(void)
 117 {
 118         int irq;
 119
 120         pxa27x_init_irq();
 121         /* setup extra Balloon3 irqs */
 122         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 123                 set_irq_chip(irq, &balloon3_irq_chip);
 124                 set_irq_handler(irq, handle_level_irq);
 125                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 126         }
 127
 128         set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 129         set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 130
 131         pr_debug("%s: chained handler installed - irq %d automatically "
 132                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 133 }
 134
 135 static void balloon3_backlight_power(int on)
 136 {
 137         pr_debug("%s: power is %s\n", __func__, on ? "on" : "off");
 138         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 139 }
 140
 141 static unsigned long balloon3_lcd_pin_config[] = {
 142         /* LCD - 16bpp Active TFT */
 143         GPIO58_LCD_LDD_0,
 144         GPIO59_LCD_LDD_1,
 145         GPIO60_LCD_LDD_2,
 146         GPIO61_LCD_LDD_3,
 147         GPIO62_LCD_LDD_4,
 148         GPIO63_LCD_LDD_5,
 149         GPIO64_LCD_LDD_6,
 150         GPIO65_LCD_LDD_7,
 151         GPIO66_LCD_LDD_8,
 152         GPIO67_LCD_LDD_9,
 153         GPIO68_LCD_LDD_10,
 154         GPIO69_LCD_LDD_11,
 155         GPIO70_LCD_LDD_12,
 156         GPIO71_LCD_LDD_13,
 157         GPIO72_LCD_LDD_14,
 158         GPIO73_LCD_LDD_15,
 159         GPIO74_LCD_FCLK,
 160         GPIO75_LCD_LCLK,
 161         GPIO76_LCD_PCLK,
 162         GPIO77_LCD_BIAS,
 163
 164         GPIO99_GPIO,            /* Backlight */
 165 };
 166
 167 static struct pxafb_mode_info balloon3_lcd_modes[] = {
 168         {
 169                 .pixclock               = 38000,
 170                 .xres                   = 480,
 171                 .yres                   = 640,
 172                 .bpp                    = 16,
 173                 .hsync_len              = 8,
 174                 .left_margin            = 8,
 175                 .right_margin           = 8,
 176                 .vsync_len              = 2,
 177                 .upper_margin           = 4,
 178                 .lower_margin           = 5,
 179                 .sync                   = 0,
 180         },
 181 };
 182
 183 static struct pxafb_mach_info balloon3_pxafb_info = {
 184         .modes                  = balloon3_lcd_modes,
 185         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 186         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 187         .pxafb_backlight_power  = balloon3_backlight_power,
 188 };
 189
 190 static unsigned long balloon3_mmc_pin_config[] = {
 191         GPIO32_MMC_CLK,
 192         GPIO92_MMC_DAT_0,
 193         GPIO109_MMC_DAT_1,
 194         GPIO110_MMC_DAT_2,
 195         GPIO111_MMC_DAT_3,
 196         GPIO112_MMC_CMD,
 197 };
 198
 199 static void balloon3_mci_setpower(struct device *dev, unsigned int vdd)
 200 {
 201         struct pxamci_platform_data *p_d = dev->platform_data;
 202
 203         if ((1 << vdd) & p_d->ocr_mask) {
 204                 pr_debug("%s: on\n", __func__);
 205                 /* FIXME something to prod here? */
 206         } else {
 207                 pr_debug("%s: off\n", __func__);
 208                 /* FIXME something to prod here? */
 209         }
 210 }
 211
 212 static struct pxamci_platform_data balloon3_mci_platform_data = {
 213         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 214         .setpower       = balloon3_mci_setpower,
 215 };
 216
 217 static int balloon3_udc_is_connected(void)
 218 {
 219         pr_debug("%s: udc connected\n", __func__);
 220         return 1;
 221 }
 222
 223 static void balloon3_udc_command(int cmd)
 224 {
 225         switch (cmd) {
 226         case PXA2XX_UDC_CMD_CONNECT:
 227                 UP2OCR |= (UP2OCR_DPPUE + UP2OCR_DPPUBE);
 228                 pr_debug("%s: connect\n", __func__);
 229                 break;
 230         case PXA2XX_UDC_CMD_DISCONNECT:
 231                 UP2OCR &= ~UP2OCR_DPPUE;
 232                 pr_debug("%s: disconnect\n", __func__);
 233                 break;
 234         }
 235 }
 236
 237 static struct pxa2xx_udc_mach_info balloon3_udc_info = {
 238         .udc_is_connected = balloon3_udc_is_connected,
 239         .udc_command      = balloon3_udc_command,
 240 };
 241
 242 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 243         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 244 };
 245
 246 static unsigned long balloon3_ohci_pin_config[] = {
 247         GPIO88_USBH1_PWR,
 248         GPIO89_USBH1_PEN,
 249 };
 250
 251 static struct pxaohci_platform_data balloon3_ohci_platform_data = {
 252         .port_mode      = PMM_PERPORT_MODE,
 253         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 254 };
 255
 256 static unsigned long balloon3_pin_config[] __initdata = {
 257         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
 258         GPIO42_BTUART_RXD,
 259         GPIO43_BTUART_TXD,
 260         GPIO44_BTUART_CTS,
 261         GPIO45_BTUART_RTS,
 262
 263         /* Wakeup GPIO */
 264         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
 265
 266         /* NAND & IDLE LED GPIOs */
 267         GPIO9_GPIO,
 268         GPIO10_GPIO,
 269 };
 270
 271 static struct gpio_led balloon3_gpio_leds[] = {
 272         {
 273                 .name                   = "balloon3:green:idle",
 274                 .default_trigger        = "heartbeat",
 275                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 276                 .active_low             = 1,
 277         },
 278         {
 279                 .name                   = "balloon3:green:nand",
 280                 .default_trigger        = "nand-disk",
 281                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 282                 .active_low             = 1,
 283         },
 284 };
 285
 286 static struct gpio_led_platform_data balloon3_gpio_leds_platform_data = {
 287         .leds           = balloon3_gpio_leds,
 288         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 289 };
 290
 291 static struct platform_device balloon3led_device = {
 292         .name   = "leds-gpio",
 293         .id     = -1,
 294         .dev    = {
 295                 .platform_data  = &balloon3_gpio_leds_platform_data,
 296         },
 297 };
 298
 299 static void __init balloon3_init(void)
 300 {
 301         pr_info("Initialising Balloon3\n");
 302
 303         /* system bus arbiter setting
 304          * - Core_Park
 305          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 306          */
 307         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 308
 309         pxa_set_ffuart_info(NULL);
 310         pxa_set_btuart_info(NULL);
 311         pxa_set_stuart_info(NULL);
 312
 313         pxa_set_i2c_info(NULL);
 314         if (balloon3_has(BALLOON3_FEATURE_AUDIO))
 315                 pxa_set_ac97_info(NULL);
 316
 317         if (balloon3_has(BALLOON3_FEATURE_TOPPOLY)) {
 318                 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
 319                 gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT,
 320                         "LCD Backlight Power");
 321                 gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 322                 set_pxa_fb_info(&balloon3_pxafb_info);
 323         }
 324
 325         if (balloon3_has(BALLOON3_FEATURE_MMC)) {
 326                 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
 327                 pxa_set_mci_info(&balloon3_mci_platform_data);
 328         }
 329         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 330         if (balloon3_has(BALLOON3_FEATURE_OHCI)) {
 331                 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ohci_pin_config));
 332                 pxa_set_ohci_info(&balloon3_ohci_platform_data);
 333         }
 334         pxa_set_udc_info(&balloon3_udc_info);
 335
 336         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 337
 338         platform_device_register(&balloon3led_device);
 339 }
 340
 341 static struct map_desc balloon3_io_desc[] __initdata = {
 342         {       /* CPLD/FPGA */
 343                 .virtual        =  BALLOON3_FPGA_VIRT,
 344                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 345                 .length         = BALLOON3_FPGA_LENGTH,
 346                 .type           = MT_DEVICE,
 347         },
 348 };
 349
 350 static void __init balloon3_map_io(void)
 351 {
 352         pxa_map_io();
 353         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 354 }
 355
 356 MACHINE_START(BALLOON3, "Balloon3")
 357         /* Maintainer: Nick Bane. */
 358         .phys_io        = 0x40000000,
 359         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 360         .map_io         = balloon3_map_io,
 361         .init_irq       = balloon3_init_irq,
 362         .timer          = &pxa_timer,
 363         .init_machine   = balloon3_init,
 364         .boot_params    = PHYS_OFFSET + 0x100,
 365 MACHINE_END