arch/arm/mach-lh7a40x/arch-lpd7a40x.c

   1 /* arch/arm/mach-lh7a40x/arch-lpd7a40x.c
   2  *
   3  *  Copyright (C) 2004 Logic Product Development
   4  *
   5  *  This program is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU General Public License
   7  *  version 2 as published by the Free Software Foundation.
   8  *
   9  */
  10
  11 #include <linux/tty.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14
  15 #include <asm/hardware.h>
  16 #include <asm/setup.h>
  17 #include <asm/mach-types.h>
  18 #include <asm/mach/arch.h>
  19 #include <asm/hardware.h>       /* io_p2v() */
  20 #include <asm/irq.h>
  21 #include <asm/mach/irq.h>
  22 #include <asm/mach/map.h>
  23
  24 #include <linux/interrupt.h>
  25
  26 static struct resource smc91x_resources[] = {
  27         [0] = {
  28                 .start  = CPLD00_PHYS,
  29                 .end    = CPLD00_PHYS + CPLD00_SIZE - 1, /* Only needs 16B */
  30                 .flags  = IORESOURCE_MEM,
  31         },
  32
  33         [1] = {
  34                 .start  = IRQ_LPD7A40X_ETH_INT,
  35                 .end    = IRQ_LPD7A40X_ETH_INT,
  36                 .flags  = IORESOURCE_IRQ,
  37         },
  38
  39 };
  40
  41 static struct platform_device smc91x_device = {
  42         .name           = "smc91x",
  43         .id             = 0,
  44         .num_resources  = ARRAY_SIZE(smc91x_resources),
  45         .resource       = smc91x_resources,
  46 };
  47
  48 static struct resource lh7a40x_usbclient_resources[] = {
  49         [0] = {
  50                 .start  = USB_PHYS,
  51                 .end    = (USB_PHYS + 0xFF),
  52                 .flags  = IORESOURCE_MEM,
  53         },
  54         [1] = {
  55                 .start  = IRQ_USBINTR,
  56                 .end    = IRQ_USBINTR,
  57                 .flags  = IORESOURCE_IRQ,
  58         },
  59 };
  60
  61 static u64 lh7a40x_usbclient_dma_mask = 0xffffffffUL;
  62
  63 static struct platform_device lh7a40x_usbclient_device = {
  64         .name           = "lh7a40x_udc",
  65         .id             = 0,
  66         .dev            = {
  67                 .dma_mask = &lh7a40x_usbclient_dma_mask,
  68                 .coherent_dma_mask = 0xffffffffUL,
  69         },
  70         .num_resources  = ARRAY_SIZE (lh7a40x_usbclient_resources),
  71         .resource       = lh7a40x_usbclient_resources,
  72 };
  73
  74 #if defined (CONFIG_ARCH_LH7A404)
  75
  76 static struct resource lh7a404_usbhost_resources [] = {
  77         [0] = {
  78                 .start  = USBH_PHYS,
  79                 .end    = (USBH_PHYS + 0xFF),
  80                 .flags  = IORESOURCE_MEM,
  81         },
  82         [1] = {
  83                 .start  = IRQ_USHINTR,
  84                 .end    = IRQ_USHINTR,
  85                 .flags  = IORESOURCE_IRQ,
  86         },
  87 };
  88
  89 static u64 lh7a404_usbhost_dma_mask = 0xffffffffUL;
  90
  91 static struct platform_device lh7a404_usbhost_device = {
  92         .name           = "lh7a404-ohci",
  93         .id             = 0,
  94         .dev            = {
  95                 .dma_mask = &lh7a404_usbhost_dma_mask,
  96                 .coherent_dma_mask = 0xffffffffUL,
  97         },
  98         .num_resources  = ARRAY_SIZE (lh7a404_usbhost_resources),
  99         .resource       = lh7a404_usbhost_resources,
 100 };
 101
 102 #endif
 103
 104 static struct platform_device *lpd7a40x_devs[] __initdata = {
 105         &smc91x_device,
 106         &lh7a40x_usbclient_device,
 107 #if defined (CONFIG_ARCH_LH7A404)
 108         &lh7a404_usbhost_device,
 109 #endif
 110 };
 111
 112 extern void lpd7a400_map_io (void);
 113
 114 static void __init lpd7a40x_init (void)
 115 {
 116         CPLD_CONTROL |=     (1<<6); /* Mask USB1 connection IRQ */
 117         CPLD_CONTROL &= ~(0
 118                           | (1<<1) /* Disable LCD */
 119                           | (1<<0) /* Enable WLAN */
 120                 );
 121
 122         platform_add_devices (lpd7a40x_devs, ARRAY_SIZE (lpd7a40x_devs));
 123 }
 124
 125 static void lh7a40x_ack_cpld_irq (u32 irq)
 126 {
 127         /* CPLD doesn't have ack capability */
 128 }
 129
 130 static void lh7a40x_mask_cpld_irq (u32 irq)
 131 {
 132         switch (irq) {
 133         case IRQ_LPD7A40X_ETH_INT:
 134                 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x4;
 135                 break;
 136         case IRQ_LPD7A400_TS:
 137                 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x8;
 138                 break;
 139         }
 140 }
 141
 142 static void lh7a40x_unmask_cpld_irq (u32 irq)
 143 {
 144         switch (irq) {
 145         case IRQ_LPD7A40X_ETH_INT:
 146                 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x4;
 147                 break;
 148         case IRQ_LPD7A400_TS:
 149                 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x8;
 150                 break;
 151         }
 152 }
 153
 154 static struct irqchip lpd7a40x_cpld_chip = {
 155         .ack    = lh7a40x_ack_cpld_irq,
 156         .mask   = lh7a40x_mask_cpld_irq,
 157         .unmask = lh7a40x_unmask_cpld_irq,
 158 };
 159
 160 #define IRQ_DISPATCH(irq) irq_desc[irq].handle ((irq), &irq_desc[irq], regs)
 161
 162 static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
 163                                   struct pt_regs *regs)
 164 {
 165         unsigned int mask = CPLD_INTERRUPTS;
 166
 167         desc->chip->ack (irq);
 168
 169         if ((mask & 0x1) == 0)  /* WLAN */
 170                 IRQ_DISPATCH (IRQ_LPD7A40X_ETH_INT);
 171
 172         if ((mask & 0x2) == 0)  /* Touch */
 173                 IRQ_DISPATCH (IRQ_LPD7A400_TS);
 174
 175         desc->chip->unmask (irq); /* Level-triggered need this */
 176 }
 177
 178
 179 void __init lh7a40x_init_board_irq (void)
 180 {
 181         int irq;
 182
 183                 /* Rev A (v2.8): PF0, PF1, PF2, and PF3 are available IRQs.
 184                                  PF7 supports the CPLD.
 185                    Rev B (v3.4): PF0, PF1, and PF2 are available IRQs.
 186                                  PF3 supports the CPLD.
 187                    (Some) LPD7A404 prerelease boards report a version
 188                    number of 0x16, but we force an override since the
 189                    hardware is of the newer variety.
 190                 */
 191
 192         unsigned char cpld_version = CPLD_REVISION;
 193         int pinCPLD = (cpld_version == 0x28) ? 7 : 3;
 194
 195 #if defined CONFIG_MACH_LPD7A404
 196         cpld_version = 0x34;    /* Coerce LPD7A404 to RevB */
 197 #endif
 198
 199                 /* First, configure user controlled GPIOF interrupts  */
 200
 201         GPIO_PFDD       &= ~0x0f; /* PF0-3 are inputs */
 202         GPIO_INTTYPE1   &= ~0x0f; /* PF0-3 are level triggered */
 203         GPIO_INTTYPE2   &= ~0x0f; /* PF0-3 are active low */
 204         barrier ();
 205         GPIO_GPIOFINTEN |=  0x0f; /* Enable PF0, PF1, PF2, and PF3 IRQs */
 206
 207                 /* Then, configure CPLD interrupt */
 208
 209         CPLD_INTERRUPTS =   0x9c; /* Disable all CPLD interrupts */
 210         GPIO_PFDD       &= ~(1 << pinCPLD); /* Make input */
 211         GPIO_INTTYPE1   |=  (1 << pinCPLD); /* Edge triggered */
 212         GPIO_INTTYPE2   &= ~(1 << pinCPLD); /* Active low */
 213         barrier ();
 214         GPIO_GPIOFINTEN |=  (1 << pinCPLD); /* Enable */
 215
 216                 /* Cascade CPLD interrupts */
 217
 218         for (irq = IRQ_BOARD_START;
 219              irq < IRQ_BOARD_START + NR_IRQ_BOARD; ++irq) {
 220                 set_irq_chip (irq, &lpd7a40x_cpld_chip);
 221                 set_irq_handler (irq, do_edge_IRQ);
 222                 set_irq_flags (irq, IRQF_VALID);
 223         }
 224
 225         set_irq_chained_handler ((cpld_version == 0x28)
 226                                  ? IRQ_CPLD_V28
 227                                  : IRQ_CPLD_V34,
 228                                  lpd7a40x_cpld_handler);
 229 }
 230
 231 static struct map_desc lpd7a400_io_desc[] __initdata = {
 232         {     IO_VIRT,      IO_PHYS,        IO_SIZE,    MT_DEVICE },
 233         /* Mapping added to work around chip select problems */
 234         { IOBARRIER_VIRT, IOBARRIER_PHYS, IOBARRIER_SIZE, MT_DEVICE },
 235         { CF_VIRT,      CF_PHYS,        CF_SIZE,        MT_DEVICE },
 236         /* This mapping is redundant since the smc driver performs another. */
 237 /*      { CPLD00_VIRT,  CPLD00_PHYS,    CPLD00_SIZE,    MT_DEVICE }, */
 238         { CPLD02_VIRT,  CPLD02_PHYS,    CPLD02_SIZE,    MT_DEVICE },
 239         { CPLD06_VIRT,  CPLD06_PHYS,    CPLD06_SIZE,    MT_DEVICE },
 240         { CPLD08_VIRT,  CPLD08_PHYS,    CPLD08_SIZE,    MT_DEVICE },
 241         { CPLD0C_VIRT,  CPLD0C_PHYS,    CPLD0C_SIZE,    MT_DEVICE },
 242         { CPLD0E_VIRT,  CPLD0E_PHYS,    CPLD0E_SIZE,    MT_DEVICE },
 243         { CPLD10_VIRT,  CPLD10_PHYS,    CPLD10_SIZE,    MT_DEVICE },
 244         { CPLD12_VIRT,  CPLD12_PHYS,    CPLD12_SIZE,    MT_DEVICE },
 245         { CPLD14_VIRT,  CPLD14_PHYS,    CPLD14_SIZE,    MT_DEVICE },
 246         { CPLD16_VIRT,  CPLD16_PHYS,    CPLD16_SIZE,    MT_DEVICE },
 247         { CPLD18_VIRT,  CPLD18_PHYS,    CPLD18_SIZE,    MT_DEVICE },
 248         { CPLD1A_VIRT,  CPLD1A_PHYS,    CPLD1A_SIZE,    MT_DEVICE },
 249 };
 250
 251 void __init
 252 lpd7a400_map_io(void)
 253 {
 254         iotable_init (lpd7a400_io_desc, ARRAY_SIZE (lpd7a400_io_desc));
 255
 256                 /* Fixup (improve) Static Memory Controller settings */
 257         SMC_BCR0 = 0x200039af;  /* Boot Flash */
 258         SMC_BCR6 = 0x1000fbe0;  /* CPLD */
 259         SMC_BCR7 = 0x1000b2c2;  /* Compact Flash */
 260 }
 261
 262 #ifdef CONFIG_MACH_LPD7A400
 263
 264 extern void lh7a400_init_irq (void);
 265 extern void lh7a40x_init_time (void);
 266
 267 MACHINE_START (LPD7A400, "Logic Product Development LPD7A400-10")
 268         MAINTAINER ("Marc Singer")
 269         BOOT_MEM (0xc0000000, 0x80000000, io_p2v (0x80000000))
 270         BOOT_PARAMS (0xc0000100)
 271         MAPIO (lpd7a400_map_io)
 272         INITIRQ (lh7a400_init_irq)
 273         INITTIME (lh7a40x_init_time)
 274         INIT_MACHINE (lpd7a40x_init)
 275 MACHINE_END
 276
 277 #endif
 278
 279 #ifdef CONFIG_MACH_LPD7A404
 280
 281 extern void lh7a404_init_irq (void);
 282 extern void lh7a40x_init_time (void);
 283
 284 MACHINE_START (LPD7A404, "Logic Product Development LPD7A404-10")
 285         MAINTAINER ("Marc Singer")
 286         BOOT_MEM (0xc0000000, 0x80000000, io_p2v (0x80000000))
 287         BOOT_PARAMS (0xc0000100)
 288         MAPIO (lpd7a400_map_io)
 289         INITIRQ (lh7a404_init_irq)
 290         INITTIME (lh7a40x_init_time)
 291         INIT_MACHINE (lpd7a40x_init)
 292 MACHINE_END
 293
 294 #endif