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/hardware/sa1111.h>
  33
  34 #include <asm/arch/pxa-regs.h>
  35 #include <asm/arch/lubbock.h>
  36 #include <asm/arch/udc.h>
  37 #include <asm/arch/pxafb.h>
  38 #include <asm/arch/mmc.h>
  39
  40 #include "generic.h"
  41
  42
  43 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
  44
  45 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
  46 {
  47         unsigned long flags;
  48
  49         local_irq_save(flags);
  50         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
  51         local_irq_restore(flags);
  52 }
  53 EXPORT_SYMBOL(lubbock_set_misc_wr);
  54
  55 static unsigned long lubbock_irq_enabled;
  56
  57 static void lubbock_mask_irq(unsigned int irq)
  58 {
  59         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  60         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
  61 }
  62
  63 static void lubbock_unmask_irq(unsigned int irq)
  64 {
  65         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  66         /* the irq can be acknowledged only if deasserted, so it's done here */
  67         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
  68         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
  69 }
  70
  71 static struct irqchip lubbock_irq_chip = {
  72         .ack            = lubbock_mask_irq,
  73         .mask           = lubbock_mask_irq,
  74         .unmask         = lubbock_unmask_irq,
  75 };
  76
  77 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
  78                                 struct pt_regs *regs)
  79 {
  80         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  81         do {
  82                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
  83                 if (likely(pending)) {
  84                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
  85                         desc = irq_desc + irq;
  86                         desc->handle(irq, desc, regs);
  87                 }
  88                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  89         } while (pending);
  90 }
  91
  92 static void __init lubbock_init_irq(void)
  93 {
  94         int irq;
  95
  96         pxa_init_irq();
  97
  98         /* setup extra lubbock irqs */
  99         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 100                 set_irq_chip(irq, &lubbock_irq_chip);
 101                 set_irq_handler(irq, do_level_IRQ);
 102                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 103         }
 104
 105         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 106         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 107 }
 108
 109 static int lubbock_udc_is_connected(void)
 110 {
 111         return (LUB_MISC_RD & (1 << 9)) == 0;
 112 }
 113
 114 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 115         .udc_is_connected       = lubbock_udc_is_connected,
 116         // no D+ pullup; lubbock can't connect/disconnect in software
 117 };
 118
 119 static struct resource sa1111_resources[] = {
 120         [0] = {
 121                 .start  = 0x10000000,
 122                 .end    = 0x10001fff,
 123                 .flags  = IORESOURCE_MEM,
 124         },
 125         [1] = {
 126                 .start  = LUBBOCK_SA1111_IRQ,
 127                 .end    = LUBBOCK_SA1111_IRQ,
 128                 .flags  = IORESOURCE_IRQ,
 129         },
 130 };
 131
 132 static struct platform_device sa1111_device = {
 133         .name           = "sa1111",
 134         .id             = -1,
 135         .num_resources  = ARRAY_SIZE(sa1111_resources),
 136         .resource       = sa1111_resources,
 137 };
 138
 139 static struct resource smc91x_resources[] = {
 140         [0] = {
 141                 .start  = 0x0c000000,
 142                 .end    = 0x0c0fffff,
 143                 .flags  = IORESOURCE_MEM,
 144         },
 145         [1] = {
 146                 .start  = LUBBOCK_ETH_IRQ,
 147                 .end    = LUBBOCK_ETH_IRQ,
 148                 .flags  = IORESOURCE_IRQ,
 149         },
 150         [2] = {
 151                 .start  = 0x0e000000,
 152                 .end    = 0x0e0fffff,
 153                 .flags  = IORESOURCE_MEM,
 154         },
 155 };
 156
 157 static struct platform_device smc91x_device = {
 158         .name           = "smc91x",
 159         .id             = -1,
 160         .num_resources  = ARRAY_SIZE(smc91x_resources),
 161         .resource       = smc91x_resources,
 162 };
 163
 164 static struct platform_device *devices[] __initdata = {
 165         &sa1111_device,
 166         &smc91x_device,
 167 };
 168
 169 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
 170         .pixclock       = 270000,
 171         .xres           = 640,
 172         .yres           = 480,
 173         .bpp            = 16,
 174         .hsync_len      = 1,
 175         .left_margin    = 3,
 176         .right_margin   = 3,
 177         .vsync_len      = 1,
 178         .upper_margin   = 0,
 179         .lower_margin   = 0,
 180         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 181         .cmap_greyscale = 0,
 182         .cmap_inverse   = 0,
 183         .cmap_static    = 0,
 184         .lccr0          = LCCR0_SDS,
 185         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
 186 };
 187
 188 static int lubbock_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data)
 189 {
 190         /* setup GPIO for PXA25x MMC controller */
 191         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 192         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 193
 194         return 0;
 195 }
 196
 197 static struct pxamci_platform_data lubbock_mci_platform_data = {
 198         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 199         .init           = lubbock_mci_init,
 200 };
 201
 202 static void __init lubbock_init(void)
 203 {
 204         pxa_set_udc_info(&udc_info);
 205         set_pxa_fb_info(&sharp_lm8v31);
 206         pxa_set_mci_info(&lubbock_mci_platform_data);
 207         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 208 }
 209
 210 static struct map_desc lubbock_io_desc[] __initdata = {
 211   { LUBBOCK_FPGA_VIRT, LUBBOCK_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
 212 };
 213
 214 static void __init lubbock_map_io(void)
 215 {
 216         pxa_map_io();
 217         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 218
 219         /* This enables the BTUART */
 220         pxa_gpio_mode(GPIO42_BTRXD_MD);
 221         pxa_gpio_mode(GPIO43_BTTXD_MD);
 222         pxa_gpio_mode(GPIO44_BTCTS_MD);
 223         pxa_gpio_mode(GPIO45_BTRTS_MD);
 224
 225         /* This is for the SMC chip select */
 226         pxa_gpio_mode(GPIO79_nCS_3_MD);
 227
 228         /* setup sleep mode values */
 229         PWER  = 0x00000002;
 230         PFER  = 0x00000000;
 231         PRER  = 0x00000002;
 232         PGSR0 = 0x00008000;
 233         PGSR1 = 0x003F0202;
 234         PGSR2 = 0x0001C000;
 235         PCFR |= PCFR_OPDE;
 236 }
 237
 238 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 239         MAINTAINER("MontaVista Software Inc.")
 240         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 241         MAPIO(lubbock_map_io)
 242         INITIRQ(lubbock_init_irq)
 243         .timer          = &pxa_timer,
 244         INIT_MACHINE(lubbock_init)
 245 MACHINE_END