kernel/linux/arch/arm/mach-pxa/lubbock.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/lubbock.c
   3  *
   4  *  Support for the Intel DBPXA250 Development Platform.
   5  *
   6  *  Author:     Nicolas Pitre
   7  *  Created:    Jun 15, 2001
   8  *  Copyright:  MontaVista Software Inc.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License version 2 as
  12  *  published by the Free Software Foundation.
  13  */
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/device.h>
  18 #include <linux/major.h>
  19 #include <linux/fb.h>
  20 #include <linux/interrupt.h>
  21
  22 #include <asm/setup.h>
  23 #include <asm/memory.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/hardware.h>
  26 #include <asm/irq.h>
  27
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/irq.h>
  31
  32 #include <asm/arch/lubbock.h>
  33 #include <asm/arch/udc.h>
  34 #include <asm/arch/pxafb.h>
  35 #include <asm/hardware/sa1111.h>
  36
  37 #include "generic.h"
  38
  39
  40 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
  41 {
  42         unsigned long flags;
  43
  44         local_irq_save(flags);
  45         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
  46         local_irq_restore(flags);
  47 }
  48 EXPORT_SYMBOL(lubbock_set_misc_wr);
  49
  50 static unsigned long lubbock_irq_enabled;
  51
  52 static void lubbock_mask_irq(unsigned int irq)
  53 {
  54         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  55         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
  56 }
  57
  58 static void lubbock_unmask_irq(unsigned int irq)
  59 {
  60         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  61         /* the irq can be acknowledged only if deasserted, so it's done here */
  62         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
  63         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
  64 }
  65
  66 static struct irqchip lubbock_irq_chip = {
  67         .ack            = lubbock_mask_irq,
  68         .mask           = lubbock_mask_irq,
  69         .unmask         = lubbock_unmask_irq,
  70 };
  71
  72 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
  73                                 struct pt_regs *regs)
  74 {
  75         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  76         do {
  77                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
  78                 if (likely(pending)) {
  79                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
  80                         desc = irq_desc + irq;
  81                         desc->handle(irq, desc, regs);
  82                 }
  83                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  84         } while (pending);
  85 }
  86
  87 static void __init lubbock_init_irq(void)
  88 {
  89         int irq;
  90
  91         pxa_init_irq();
  92
  93         /* setup extra lubbock irqs */
  94         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
  95                 set_irq_chip(irq, &lubbock_irq_chip);
  96                 set_irq_handler(irq, do_level_IRQ);
  97                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
  98         }
  99
 100         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 101         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 102 }
 103
 104 static int lubbock_udc_is_connected(void)
 105 {
 106         return (LUB_MISC_RD & (1 << 9)) == 0;
 107 }
 108
 109 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 110         .udc_is_connected       = lubbock_udc_is_connected,
 111         // no D+ pullup; lubbock can't connect/disconnect in software
 112 };
 113
 114 static struct resource sa1111_resources[] = {
 115         [0] = {
 116                 .start  = 0x10000000,
 117                 .end    = 0x10001fff,
 118                 .flags  = IORESOURCE_MEM,
 119         },
 120         [1] = {
 121                 .start  = LUBBOCK_SA1111_IRQ,
 122                 .end    = LUBBOCK_SA1111_IRQ,
 123                 .flags  = IORESOURCE_IRQ,
 124         },
 125 };
 126
 127 static struct platform_device sa1111_device = {
 128         .name           = "sa1111",
 129         .id             = -1,
 130         .num_resources  = ARRAY_SIZE(sa1111_resources),
 131         .resource       = sa1111_resources,
 132 };
 133
 134 static struct resource smc91x_resources[] = {
 135         [0] = {
 136                 .start  = 0x0c000000,
 137                 .end    = 0x0c0fffff,
 138                 .flags  = IORESOURCE_MEM,
 139         },
 140         [1] = {
 141                 .start  = LUBBOCK_ETH_IRQ,
 142                 .end    = LUBBOCK_ETH_IRQ,
 143                 .flags  = IORESOURCE_IRQ,
 144         },
 145         [2] = {
 146                 .start  = 0x0e000000,
 147                 .end    = 0x0e0fffff,
 148                 .flags  = IORESOURCE_MEM,
 149         },
 150 };
 151
 152 static struct platform_device smc91x_device = {
 153         .name           = "smc91x",
 154         .id             = -1,
 155         .num_resources  = ARRAY_SIZE(smc91x_resources),
 156         .resource       = smc91x_resources,
 157 };
 158
 159 static struct platform_device *devices[] __initdata = {
 160         &sa1111_device,
 161         &smc91x_device,
 162 };
 163
 164 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
 165         .pixclock       = 270000,
 166         .xres           = 640,
 167         .yres           = 480,
 168         .bpp            = 16,
 169         .hsync_len      = 1,
 170         .left_margin    = 3,
 171         .right_margin   = 3,
 172         .vsync_len      = 1,
 173         .upper_margin   = 0,
 174         .lower_margin   = 0,
 175         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 176         .cmap_greyscale = 0,
 177         .cmap_inverse   = 0,
 178         .cmap_static    = 0,
 179         .lccr0          = LCCR0_SDS,
 180         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
 181 };
 182
 183 static void __init lubbock_init(void)
 184 {
 185         pxa_set_udc_info(&udc_info);
 186         set_pxa_fb_info(&sharp_lm8v31);
 187         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 188 }
 189
 190 static struct map_desc lubbock_io_desc[] __initdata = {
 191   { LUBBOCK_FPGA_VIRT, LUBBOCK_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
 192 };
 193
 194 static void __init lubbock_map_io(void)
 195 {
 196         pxa_map_io();
 197         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 198
 199         /* This enables the BTUART */
 200         pxa_gpio_mode(GPIO42_BTRXD_MD);
 201         pxa_gpio_mode(GPIO43_BTTXD_MD);
 202         pxa_gpio_mode(GPIO44_BTCTS_MD);
 203         pxa_gpio_mode(GPIO45_BTRTS_MD);
 204
 205         /* This is for the SMC chip select */
 206         pxa_gpio_mode(GPIO79_nCS_3_MD);
 207
 208         /* setup sleep mode values */
 209         PWER  = 0x00000002;
 210         PFER  = 0x00000000;
 211         PRER  = 0x00000002;
 212         PGSR0 = 0x00008000;
 213         PGSR1 = 0x003F0202;
 214         PGSR2 = 0x0001C000;
 215         PCFR |= PCFR_OPDE;
 216 }
 217
 218 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 219         MAINTAINER("MontaVista Software Inc.")
 220         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 221         MAPIO(lubbock_map_io)
 222         INITIRQ(lubbock_init_irq)
 223         INITTIME(pxa_init_time)
 224         INIT_MACHINE(lubbock_init)
 225 MACHINE_END