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/platform_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/irda.h>
  39 #include <asm/arch/pxafb.h>
  40 #include <asm/arch/mmc.h>
  41
  42 #include "generic.h"
  43
  44
  45 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
  46
  47 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
  48 {
  49         unsigned long flags;
  50
  51         local_irq_save(flags);
  52         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
  53         local_irq_restore(flags);
  54 }
  55 EXPORT_SYMBOL(lubbock_set_misc_wr);
  56
  57 static unsigned long lubbock_irq_enabled;
  58
  59 static void lubbock_mask_irq(unsigned int irq)
  60 {
  61         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  62         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
  63 }
  64
  65 static void lubbock_unmask_irq(unsigned int irq)
  66 {
  67         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  68         /* the irq can be acknowledged only if deasserted, so it's done here */
  69         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
  70         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
  71 }
  72
  73 static struct irqchip lubbock_irq_chip = {
  74         .ack            = lubbock_mask_irq,
  75         .mask           = lubbock_mask_irq,
  76         .unmask         = lubbock_unmask_irq,
  77 };
  78
  79 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
  80                                 struct pt_regs *regs)
  81 {
  82         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  83         do {
  84                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
  85                 if (likely(pending)) {
  86                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
  87                         desc = irq_desc + irq;
  88                         desc_handle_irq(irq, desc, regs);
  89                 }
  90                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  91         } while (pending);
  92 }
  93
  94 static void __init lubbock_init_irq(void)
  95 {
  96         int irq;
  97
  98         pxa_init_irq();
  99
 100         /* setup extra lubbock irqs */
 101         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 102                 set_irq_chip(irq, &lubbock_irq_chip);
 103                 set_irq_handler(irq, do_level_IRQ);
 104                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 105         }
 106
 107         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 108         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 109 }
 110
 111 #ifdef CONFIG_PM
 112
 113 static int lubbock_irq_resume(struct sys_device *dev)
 114 {
 115         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 116         return 0;
 117 }
 118
 119 static struct sysdev_class lubbock_irq_sysclass = {
 120         set_kset_name("cpld_irq"),
 121         .resume = lubbock_irq_resume,
 122 };
 123
 124 static struct sys_device lubbock_irq_device = {
 125         .cls = &lubbock_irq_sysclass,
 126 };
 127
 128 static int __init lubbock_irq_device_init(void)
 129 {
 130         int ret = sysdev_class_register(&lubbock_irq_sysclass);
 131         if (ret == 0)
 132                 ret = sysdev_register(&lubbock_irq_device);
 133         return ret;
 134 }
 135
 136 device_initcall(lubbock_irq_device_init);
 137
 138 #endif
 139
 140 static int lubbock_udc_is_connected(void)
 141 {
 142         return (LUB_MISC_RD & (1 << 9)) == 0;
 143 }
 144
 145 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 146         .udc_is_connected       = lubbock_udc_is_connected,
 147         // no D+ pullup; lubbock can't connect/disconnect in software
 148 };
 149
 150 static struct platform_device lub_audio_device = {
 151         .name           = "pxa2xx-ac97",
 152         .id             = -1,
 153 };
 154
 155 static struct resource sa1111_resources[] = {
 156         [0] = {
 157                 .start  = 0x10000000,
 158                 .end    = 0x10001fff,
 159                 .flags  = IORESOURCE_MEM,
 160         },
 161         [1] = {
 162                 .start  = LUBBOCK_SA1111_IRQ,
 163                 .end    = LUBBOCK_SA1111_IRQ,
 164                 .flags  = IORESOURCE_IRQ,
 165         },
 166 };
 167
 168 static struct platform_device sa1111_device = {
 169         .name           = "sa1111",
 170         .id             = -1,
 171         .num_resources  = ARRAY_SIZE(sa1111_resources),
 172         .resource       = sa1111_resources,
 173 };
 174
 175 static struct resource smc91x_resources[] = {
 176         [0] = {
 177                 .name   = "smc91x-regs",
 178                 .start  = 0x0c000000,
 179                 .end    = 0x0c0fffff,
 180                 .flags  = IORESOURCE_MEM,
 181         },
 182         [1] = {
 183                 .start  = LUBBOCK_ETH_IRQ,
 184                 .end    = LUBBOCK_ETH_IRQ,
 185                 .flags  = IORESOURCE_IRQ,
 186         },
 187         [2] = {
 188                 .name   = "smc91x-attrib",
 189                 .start  = 0x0e000000,
 190                 .end    = 0x0e0fffff,
 191                 .flags  = IORESOURCE_MEM,
 192         },
 193 };
 194
 195 static struct platform_device smc91x_device = {
 196         .name           = "smc91x",
 197         .id             = -1,
 198         .num_resources  = ARRAY_SIZE(smc91x_resources),
 199         .resource       = smc91x_resources,
 200 };
 201
 202 static struct platform_device *devices[] __initdata = {
 203         &sa1111_device,
 204         &lub_audio_device,
 205         &smc91x_device,
 206 };
 207
 208 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
 209         .pixclock       = 270000,
 210         .xres           = 640,
 211         .yres           = 480,
 212         .bpp            = 16,
 213         .hsync_len      = 1,
 214         .left_margin    = 3,
 215         .right_margin   = 3,
 216         .vsync_len      = 1,
 217         .upper_margin   = 0,
 218         .lower_margin   = 0,
 219         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 220         .cmap_greyscale = 0,
 221         .cmap_inverse   = 0,
 222         .cmap_static    = 0,
 223         .lccr0          = LCCR0_SDS,
 224         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
 225 };
 226
 227 static int lubbock_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data)
 228 {
 229         /* setup GPIO for PXA25x MMC controller */
 230         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 231         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 232
 233         return 0;
 234 }
 235
 236 static struct pxamci_platform_data lubbock_mci_platform_data = {
 237         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 238         .init           = lubbock_mci_init,
 239 };
 240
 241 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 242 {
 243         unsigned long flags;
 244
 245         local_irq_save(flags);
 246         if (mode & IR_SIRMODE) {
 247                 LUB_MISC_WR &= ~(1 << 4);
 248         } else if (mode & IR_FIRMODE) {
 249                 LUB_MISC_WR |= 1 << 4;
 250         }
 251         local_irq_restore(flags);
 252 }
 253
 254 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 255         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
 256         .transceiver_mode = lubbock_irda_transceiver_mode,
 257 };
 258
 259 static void __init lubbock_init(void)
 260 {
 261         pxa_set_udc_info(&udc_info);
 262         set_pxa_fb_info(&sharp_lm8v31);
 263         pxa_set_mci_info(&lubbock_mci_platform_data);
 264         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 265         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 266 }
 267
 268 static struct map_desc lubbock_io_desc[] __initdata = {
 269         {       /* CPLD */
 270                 .virtual        =  LUBBOCK_FPGA_VIRT,
 271                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 272                 .length         = 0x00100000,
 273                 .type           = MT_DEVICE
 274         }
 275 };
 276
 277 static void __init lubbock_map_io(void)
 278 {
 279         pxa_map_io();
 280         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 281
 282         /* This enables the BTUART */
 283         pxa_gpio_mode(GPIO42_BTRXD_MD);
 284         pxa_gpio_mode(GPIO43_BTTXD_MD);
 285         pxa_gpio_mode(GPIO44_BTCTS_MD);
 286         pxa_gpio_mode(GPIO45_BTRTS_MD);
 287
 288         /* This is for the SMC chip select */
 289         pxa_gpio_mode(GPIO79_nCS_3_MD);
 290
 291         /* setup sleep mode values */
 292         PWER  = 0x00000002;
 293         PFER  = 0x00000000;
 294         PRER  = 0x00000002;
 295         PGSR0 = 0x00008000;
 296         PGSR1 = 0x003F0202;
 297         PGSR2 = 0x0001C000;
 298         PCFR |= PCFR_OPDE;
 299 }
 300
 301 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 302         /* Maintainer: MontaVista Software Inc. */
 303         .phys_ram       = 0xa0000000,
 304         .phys_io        = 0x40000000,
 305         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 306         .map_io         = lubbock_map_io,
 307         .init_irq       = lubbock_init_irq,
 308         .timer          = &pxa_timer,
 309         .init_machine   = lubbock_init,
 310 MACHINE_END