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  = 0x0c000c00,
 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 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 228
 229 static void lubbock_mmc_poll(unsigned long);
 230 static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
 231
 232 static struct timer_list mmc_timer = {
 233         .function       = lubbock_mmc_poll,
 234 };
 235
 236 static void lubbock_mmc_poll(unsigned long data)
 237 {
 238         unsigned long flags;
 239
 240         /* clear any previous irq state, then ... */
 241         local_irq_save(flags);
 242         LUB_IRQ_SET_CLR &= ~(1 << 0);
 243         local_irq_restore(flags);
 244
 245         /* poll until mmc/sd card is removed */
 246         if (LUB_IRQ_SET_CLR & (1 << 0))
 247                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 248         else {
 249                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
 250                 enable_irq(LUBBOCK_SD_IRQ);
 251         }
 252 }
 253
 254 static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
 255 {
 256         /* IRQ is level triggered; disable, and poll for removal */
 257         disable_irq(irq);
 258         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 259
 260         return mmc_detect_int(irq, data, regs);
 261 }
 262
 263 static int lubbock_mci_init(struct device *dev,
 264                 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
 265                 void *data)
 266 {
 267         /* setup GPIO for PXA25x MMC controller */
 268         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 269         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 270
 271         /* detect card insert/eject */
 272         mmc_detect_int = detect_int;
 273         init_timer(&mmc_timer);
 274         mmc_timer.data = (unsigned long) data;
 275         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 276                         SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
 277 }
 278
 279 static int lubbock_mci_get_ro(struct device *dev)
 280 {
 281         return (LUB_MISC_RD & (1 << 2)) != 0;
 282 }
 283
 284 static void lubbock_mci_exit(struct device *dev, void *data)
 285 {
 286         free_irq(LUBBOCK_SD_IRQ, data);
 287         del_timer_sync(&mmc_timer);
 288 }
 289
 290 static struct pxamci_platform_data lubbock_mci_platform_data = {
 291         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 292         .detect_delay   = 1,
 293         .init           = lubbock_mci_init,
 294         .get_ro         = lubbock_mci_get_ro,
 295         .exit           = lubbock_mci_exit,
 296 };
 297
 298 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 299 {
 300         unsigned long flags;
 301
 302         local_irq_save(flags);
 303         if (mode & IR_SIRMODE) {
 304                 LUB_MISC_WR &= ~(1 << 4);
 305         } else if (mode & IR_FIRMODE) {
 306                 LUB_MISC_WR |= 1 << 4;
 307         }
 308         local_irq_restore(flags);
 309 }
 310
 311 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 312         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
 313         .transceiver_mode = lubbock_irda_transceiver_mode,
 314 };
 315
 316 static void __init lubbock_init(void)
 317 {
 318         pxa_set_udc_info(&udc_info);
 319         set_pxa_fb_info(&sharp_lm8v31);
 320         pxa_set_mci_info(&lubbock_mci_platform_data);
 321         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 322         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 323 }
 324
 325 static struct map_desc lubbock_io_desc[] __initdata = {
 326         {       /* CPLD */
 327                 .virtual        =  LUBBOCK_FPGA_VIRT,
 328                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 329                 .length         = 0x00100000,
 330                 .type           = MT_DEVICE
 331         }
 332 };
 333
 334 static void __init lubbock_map_io(void)
 335 {
 336         pxa_map_io();
 337         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 338
 339         /* This enables the BTUART */
 340         pxa_gpio_mode(GPIO42_BTRXD_MD);
 341         pxa_gpio_mode(GPIO43_BTTXD_MD);
 342         pxa_gpio_mode(GPIO44_BTCTS_MD);
 343         pxa_gpio_mode(GPIO45_BTRTS_MD);
 344
 345         /* This is for the SMC chip select */
 346         pxa_gpio_mode(GPIO79_nCS_3_MD);
 347
 348         /* setup sleep mode values */
 349         PWER  = 0x00000002;
 350         PFER  = 0x00000000;
 351         PRER  = 0x00000002;
 352         PGSR0 = 0x00008000;
 353         PGSR1 = 0x003F0202;
 354         PGSR2 = 0x0001C000;
 355         PCFR |= PCFR_OPDE;
 356 }
 357
 358 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 359         /* Maintainer: MontaVista Software Inc. */
 360         .phys_ram       = 0xa0000000,
 361         .phys_io        = 0x40000000,
 362         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 363         .map_io         = lubbock_map_io,
 364         .init_irq       = lubbock_init_irq,
 365         .timer          = &pxa_timer,
 366         .init_machine   = lubbock_init,
 367 MACHINE_END