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