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/sysdev.h>
  19 #include <linux/major.h>
  20 #include <linux/fb.h>
  21 #include <linux/interrupt.h>
  22
  23 #include <asm/setup.h>
  24 #include <asm/memory.h>
  25 #include <asm/mach-types.h>
  26 #include <asm/hardware.h>
  27 #include <asm/irq.h>
  28
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/irq.h>
  32
  33 #include <asm/hardware/sa1111.h>
  34
  35 #include <asm/arch/pxa-regs.h>
  36 #include <asm/arch/lubbock.h>
  37 #include <asm/arch/udc.h>
  38 #include <asm/arch/pxafb.h>
  39 #include <asm/arch/mmc.h>
  40
  41 #include "generic.h"
  42
  43
  44 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
  45
  46 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
  47 {
  48         unsigned long flags;
  49
  50         local_irq_save(flags);
  51         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
  52         local_irq_restore(flags);
  53 }
  54 EXPORT_SYMBOL(lubbock_set_misc_wr);
  55
  56 static unsigned long lubbock_irq_enabled;
  57
  58 static void lubbock_mask_irq(unsigned int irq)
  59 {
  60         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  61         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
  62 }
  63
  64 static void lubbock_unmask_irq(unsigned int irq)
  65 {
  66         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  67         /* the irq can be acknowledged only if deasserted, so it's done here */
  68         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
  69         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
  70 }
  71
  72 static struct irqchip lubbock_irq_chip = {
  73         .ack            = lubbock_mask_irq,
  74         .mask           = lubbock_mask_irq,
  75         .unmask         = lubbock_unmask_irq,
  76 };
  77
  78 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
  79                                 struct pt_regs *regs)
  80 {
  81         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  82         do {
  83                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
  84                 if (likely(pending)) {
  85                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
  86                         desc = irq_desc + irq;
  87                         desc->handle(irq, desc, regs);
  88                 }
  89                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  90         } while (pending);
  91 }
  92
  93 static void __init lubbock_init_irq(void)
  94 {
  95         int irq;
  96
  97         pxa_init_irq();
  98
  99         /* setup extra lubbock irqs */
 100         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 101                 set_irq_chip(irq, &lubbock_irq_chip);
 102                 set_irq_handler(irq, do_level_IRQ);
 103                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 104         }
 105
 106         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 107         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 108 }
 109
 110 #ifdef CONFIG_PM
 111
 112 static int lubbock_irq_resume(struct sys_device *dev)
 113 {
 114         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 115         return 0;
 116 }
 117
 118 static struct sysdev_class lubbock_irq_sysclass = {
 119         set_kset_name("cpld_irq"),
 120         .resume = lubbock_irq_resume,
 121 };
 122
 123 static struct sys_device lubbock_irq_device = {
 124         .cls = &lubbock_irq_sysclass,
 125 };
 126
 127 static int __init lubbock_irq_device_init(void)
 128 {
 129         int ret = sysdev_class_register(&lubbock_irq_sysclass);
 130         if (ret == 0)
 131                 ret = sysdev_register(&lubbock_irq_device);
 132         return ret;
 133 }
 134
 135 device_initcall(lubbock_irq_device_init);
 136
 137 #endif
 138
 139 static int lubbock_udc_is_connected(void)
 140 {
 141         return (LUB_MISC_RD & (1 << 9)) == 0;
 142 }
 143
 144 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 145         .udc_is_connected       = lubbock_udc_is_connected,
 146         // no D+ pullup; lubbock can't connect/disconnect in software
 147 };
 148
 149 static struct resource sa1111_resources[] = {
 150         [0] = {
 151                 .start  = 0x10000000,
 152                 .end    = 0x10001fff,
 153                 .flags  = IORESOURCE_MEM,
 154         },
 155         [1] = {
 156                 .start  = LUBBOCK_SA1111_IRQ,
 157                 .end    = LUBBOCK_SA1111_IRQ,
 158                 .flags  = IORESOURCE_IRQ,
 159         },
 160 };
 161
 162 static struct platform_device sa1111_device = {
 163         .name           = "sa1111",
 164         .id             = -1,
 165         .num_resources  = ARRAY_SIZE(sa1111_resources),
 166         .resource       = sa1111_resources,
 167 };
 168
 169 static struct resource smc91x_resources[] = {
 170         [0] = {
 171                 .name   = "smc91x-regs",
 172                 .start  = 0x0c000000,
 173                 .end    = 0x0c0fffff,
 174                 .flags  = IORESOURCE_MEM,
 175         },
 176         [1] = {
 177                 .start  = LUBBOCK_ETH_IRQ,
 178                 .end    = LUBBOCK_ETH_IRQ,
 179                 .flags  = IORESOURCE_IRQ,
 180         },
 181         [2] = {
 182                 .name   = "smc91x-attrib",
 183                 .start  = 0x0e000000,
 184                 .end    = 0x0e0fffff,
 185                 .flags  = IORESOURCE_MEM,
 186         },
 187 };
 188
 189 static struct platform_device smc91x_device = {
 190         .name           = "smc91x",
 191         .id             = -1,
 192         .num_resources  = ARRAY_SIZE(smc91x_resources),
 193         .resource       = smc91x_resources,
 194 };
 195
 196 static struct platform_device *devices[] __initdata = {
 197         &sa1111_device,
 198         &smc91x_device,
 199 };
 200
 201 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
 202         .pixclock       = 270000,
 203         .xres           = 640,
 204         .yres           = 480,
 205         .bpp            = 16,
 206         .hsync_len      = 1,
 207         .left_margin    = 3,
 208         .right_margin   = 3,
 209         .vsync_len      = 1,
 210         .upper_margin   = 0,
 211         .lower_margin   = 0,
 212         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 213         .cmap_greyscale = 0,
 214         .cmap_inverse   = 0,
 215         .cmap_static    = 0,
 216         .lccr0          = LCCR0_SDS,
 217         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
 218 };
 219
 220 static int lubbock_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data)
 221 {
 222         /* setup GPIO for PXA25x MMC controller */
 223         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 224         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 225
 226         return 0;
 227 }
 228
 229 static struct pxamci_platform_data lubbock_mci_platform_data = {
 230         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 231         .init           = lubbock_mci_init,
 232 };
 233
 234 static void __init lubbock_init(void)
 235 {
 236         pxa_set_udc_info(&udc_info);
 237         set_pxa_fb_info(&sharp_lm8v31);
 238         pxa_set_mci_info(&lubbock_mci_platform_data);
 239         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 240 }
 241
 242 static struct map_desc lubbock_io_desc[] __initdata = {
 243   { LUBBOCK_FPGA_VIRT, LUBBOCK_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
 244 };
 245
 246 static void __init lubbock_map_io(void)
 247 {
 248         pxa_map_io();
 249         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 250
 251         /* This enables the BTUART */
 252         pxa_gpio_mode(GPIO42_BTRXD_MD);
 253         pxa_gpio_mode(GPIO43_BTTXD_MD);
 254         pxa_gpio_mode(GPIO44_BTCTS_MD);
 255         pxa_gpio_mode(GPIO45_BTRTS_MD);
 256
 257         /* This is for the SMC chip select */
 258         pxa_gpio_mode(GPIO79_nCS_3_MD);
 259
 260         /* setup sleep mode values */
 261         PWER  = 0x00000002;
 262         PFER  = 0x00000000;
 263         PRER  = 0x00000002;
 264         PGSR0 = 0x00008000;
 265         PGSR1 = 0x003F0202;
 266         PGSR2 = 0x0001C000;
 267         PCFR |= PCFR_OPDE;
 268 }
 269
 270 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 271         MAINTAINER("MontaVista Software Inc.")
 272         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 273         MAPIO(lubbock_map_io)
 274         INITIRQ(lubbock_init_irq)
 275         .timer          = &pxa_timer,
 276         INIT_MACHINE(lubbock_init)
 277 MACHINE_END