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