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