arch/arm/mach-pxa/lpd270.c

   1 /*
   2  * linux/arch/arm/mach-pxa/lpd270.c
   3  *
   4  * Support for the LogicPD PXA270 Card Engine.
   5  * Derived from the mainstone code, which carries these notices:
   6  *
   7  * Author:      Nicolas Pitre
   8  * Created:     Nov 05, 2002
   9  * Copyright:   MontaVista Software Inc.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/bitops.h>
  22 #include <linux/fb.h>
  23 #include <linux/ioport.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/partitions.h>
  26
  27 #include <asm/types.h>
  28 #include <asm/setup.h>
  29 #include <asm/memory.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/hardware.h>
  32 #include <asm/irq.h>
  33 #include <asm/sizes.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/irq.h>
  38 #include <asm/mach/flash.h>
  39
  40 #include <asm/arch/pxa-regs.h>
  41 #include <asm/arch/lpd270.h>
  42 #include <asm/arch/audio.h>
  43 #include <asm/arch/pxafb.h>
  44 #include <asm/arch/mmc.h>
  45 #include <asm/arch/irda.h>
  46 #include <asm/arch/ohci.h>
  47
  48 #include "generic.h"
  49
  50
  51 static unsigned int lpd270_irq_enabled;
  52
  53 static void lpd270_mask_irq(unsigned int irq)
  54 {
  55         int lpd270_irq = irq - LPD270_IRQ(0);
  56
  57         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
  58
  59         lpd270_irq_enabled &= ~(1 << lpd270_irq);
  60         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  61 }
  62
  63 static void lpd270_unmask_irq(unsigned int irq)
  64 {
  65         int lpd270_irq = irq - LPD270_IRQ(0);
  66
  67         lpd270_irq_enabled |= 1 << lpd270_irq;
  68         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  69 }
  70
  71 static struct irqchip lpd270_irq_chip = {
  72         .ack            = lpd270_mask_irq,
  73         .mask           = lpd270_mask_irq,
  74         .unmask         = lpd270_unmask_irq,
  75 };
  76
  77 static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
  78                                   struct pt_regs *regs)
  79 {
  80         unsigned long pending;
  81
  82         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
  83         do {
  84                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  85                 if (likely(pending)) {
  86                         irq = LPD270_IRQ(0) + __ffs(pending);
  87                         desc = irq_desc + irq;
  88                         desc_handle_irq(irq, desc, regs);
  89
  90                         pending = __raw_readw(LPD270_INT_STATUS) &
  91                                                 lpd270_irq_enabled;
  92                 }
  93         } while (pending);
  94 }
  95
  96 static void __init lpd270_init_irq(void)
  97 {
  98         int irq;
  99
 100         pxa_init_irq();
 101
 102         __raw_writew(0, LPD270_INT_MASK);
 103         __raw_writew(0, LPD270_INT_STATUS);
 104
 105         /* setup extra LogicPD PXA270 irqs */
 106         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
 107                 set_irq_chip(irq, &lpd270_irq_chip);
 108                 set_irq_handler(irq, do_level_IRQ);
 109                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 110         }
 111         set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
 112         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 113 }
 114
 115
 116 #ifdef CONFIG_PM
 117 static int lpd270_irq_resume(struct sys_device *dev)
 118 {
 119         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 120         return 0;
 121 }
 122
 123 static struct sysdev_class lpd270_irq_sysclass = {
 124         set_kset_name("cpld_irq"),
 125         .resume = lpd270_irq_resume,
 126 };
 127
 128 static struct sys_device lpd270_irq_device = {
 129         .cls = &lpd270_irq_sysclass,
 130 };
 131
 132 static int __init lpd270_irq_device_init(void)
 133 {
 134         int ret = sysdev_class_register(&lpd270_irq_sysclass);
 135         if (ret == 0)
 136                 ret = sysdev_register(&lpd270_irq_device);
 137         return ret;
 138 }
 139
 140 device_initcall(lpd270_irq_device_init);
 141 #endif
 142
 143
 144 static struct resource smc91x_resources[] = {
 145         [0] = {
 146                 .start  = LPD270_ETH_PHYS,
 147                 .end    = (LPD270_ETH_PHYS + 0xfffff),
 148                 .flags  = IORESOURCE_MEM,
 149         },
 150         [1] = {
 151                 .start  = LPD270_ETHERNET_IRQ,
 152                 .end    = LPD270_ETHERNET_IRQ,
 153                 .flags  = IORESOURCE_IRQ,
 154         },
 155 };
 156
 157 static struct platform_device smc91x_device = {
 158         .name           = "smc91x",
 159         .id             = 0,
 160         .num_resources  = ARRAY_SIZE(smc91x_resources),
 161         .resource       = smc91x_resources,
 162 };
 163
 164 static struct platform_device lpd270_audio_device = {
 165         .name           = "pxa2xx-ac97",
 166         .id             = -1,
 167 };
 168
 169 static struct resource lpd270_flash_resources[] = {
 170         [0] = {
 171                 .start  = PXA_CS0_PHYS,
 172                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 173                 .flags  = IORESOURCE_MEM,
 174         },
 175         [1] = {
 176                 .start  = PXA_CS1_PHYS,
 177                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 178                 .flags  = IORESOURCE_MEM,
 179         },
 180 };
 181
 182 static struct mtd_partition lpd270_flash0_partitions[] = {
 183         {
 184                 .name =         "Bootloader",
 185                 .size =         0x00040000,
 186                 .offset =       0,
 187                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 188         }, {
 189                 .name =         "Kernel",
 190                 .size =         0x00400000,
 191                 .offset =       0x00040000,
 192         }, {
 193                 .name =         "Filesystem",
 194                 .size =         MTDPART_SIZ_FULL,
 195                 .offset =       0x00440000
 196         },
 197 };
 198
 199 static struct flash_platform_data lpd270_flash_data[2] = {
 200         {
 201                 .name           = "processor-flash",
 202                 .map_name       = "cfi_probe",
 203                 .parts          = lpd270_flash0_partitions,
 204                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
 205         }, {
 206                 .name           = "mainboard-flash",
 207                 .map_name       = "cfi_probe",
 208                 .parts          = NULL,
 209                 .nr_parts       = 0,
 210         }
 211 };
 212
 213 static struct platform_device lpd270_flash_device[2] = {
 214         {
 215                 .name           = "pxa2xx-flash",
 216                 .id             = 0,
 217                 .dev = {
 218                         .platform_data  = &lpd270_flash_data[0],
 219                 },
 220                 .resource       = &lpd270_flash_resources[0],
 221                 .num_resources  = 1,
 222         }, {
 223                 .name           = "pxa2xx-flash",
 224                 .id             = 1,
 225                 .dev = {
 226                         .platform_data  = &lpd270_flash_data[1],
 227                 },
 228                 .resource       = &lpd270_flash_resources[1],
 229                 .num_resources  = 1,
 230         },
 231 };
 232
 233 static void lpd270_backlight_power(int on)
 234 {
 235         if (on) {
 236                 pxa_gpio_mode(GPIO16_PWM0_MD);
 237                 pxa_set_cken(CKEN0_PWM0, 1);
 238                 PWM_CTRL0 = 0;
 239                 PWM_PWDUTY0 = 0x3ff;
 240                 PWM_PERVAL0 = 0x3ff;
 241         } else {
 242                 PWM_CTRL0 = 0;
 243                 PWM_PWDUTY0 = 0x0;
 244                 PWM_PERVAL0 = 0x3FF;
 245                 pxa_set_cken(CKEN0_PWM0, 0);
 246         }
 247 }
 248
 249 /* 5.7" TFT QVGA (LoLo display number 1) */
 250 static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
 251         .pixclock               = 100000,
 252         .xres                   = 240,
 253         .yres                   = 320,
 254         .bpp                    = 16,
 255         .hsync_len              = 64,
 256         .left_margin            = 0x27,
 257         .right_margin           = 0x09,
 258         .vsync_len              = 0x04,
 259         .upper_margin           = 0x08,
 260         .lower_margin           = 0x14,
 261         .sync                   = 0,
 262         .lccr0                  = 0x07800080,
 263         .lccr3                  = 0x04400007,
 264         .pxafb_backlight_power  = lpd270_backlight_power,
 265 };
 266
 267 /* 6.4" TFT VGA (LoLo display number 5) */
 268 static struct pxafb_mach_info sharp_lq64d343 __initdata = {
 269         .pixclock               = 20000,
 270         .xres                   = 640,
 271         .yres                   = 480,
 272         .bpp                    = 16,
 273         .hsync_len              = 49,
 274         .left_margin            = 0x89,
 275         .right_margin           = 0x19,
 276         .vsync_len              = 18,
 277         .upper_margin           = 0x22,
 278         .lower_margin           = 0,
 279         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 280         .lccr0                  = 0x07800080,
 281         .lccr3                  = 0x04400001,
 282         .pxafb_backlight_power  = lpd270_backlight_power,
 283 };
 284
 285 /* 3.5" TFT QVGA (LoLo display number 8) */
 286 static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
 287         .pixclock               = 100000,
 288         .xres                   = 240,
 289         .yres                   = 320,
 290         .bpp                    = 16,
 291         .hsync_len              = 0x34,
 292         .left_margin            = 0x09,
 293         .right_margin           = 0x09,
 294         .vsync_len              = 0x08,
 295         .upper_margin           = 0x05,
 296         .lower_margin           = 0x14,
 297         .sync                   = 0,
 298         .lccr0                  = 0x07800080,
 299         .lccr3                  = 0x04400007,
 300         .pxafb_backlight_power  = lpd270_backlight_power,
 301 };
 302
 303 static struct platform_device *platform_devices[] __initdata = {
 304         &smc91x_device,
 305         &lpd270_audio_device,
 306         &lpd270_flash_device[0],
 307         &lpd270_flash_device[1],
 308 };
 309
 310 static int lpd270_ohci_init(struct device *dev)
 311 {
 312         /* setup Port1 GPIO pin. */
 313         pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN);   /* USBHPWR1 */
 314         pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT);  /* USBHPEN1 */
 315
 316         /* Set the Power Control Polarity Low and Power Sense
 317            Polarity Low to active low. */
 318         UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
 319                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
 320
 321         return 0;
 322 }
 323
 324 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
 325         .port_mode      = PMM_PERPORT_MODE,
 326         .init           = lpd270_ohci_init,
 327 };
 328
 329 static void __init lpd270_init(void)
 330 {
 331         lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
 332         lpd270_flash_data[1].width = 4;
 333
 334         /*
 335          * System bus arbiter setting:
 336          * - Core_Park
 337          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 338          */
 339         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 340
 341         /*
 342          * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
 343          */
 344         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 345
 346         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 347
 348         // set_pxa_fb_info(&sharp_lq057q3dc02);
 349         set_pxa_fb_info(&sharp_lq64d343);
 350         // set_pxa_fb_info(&sharp_lq035q7db02_20);
 351
 352         pxa_set_ohci_info(&lpd270_ohci_platform_data);
 353 }
 354
 355
 356 static struct map_desc lpd270_io_desc[] __initdata = {
 357         {
 358                 .virtual        = LPD270_CPLD_VIRT,
 359                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
 360                 .length         = LPD270_CPLD_SIZE,
 361                 .type           = MT_DEVICE,
 362         },
 363 };
 364
 365 static void __init lpd270_map_io(void)
 366 {
 367         pxa_map_io();
 368         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
 369
 370         /* initialize sleep mode regs (wake-up sources, etc) */
 371         PGSR0 = 0x00008800;
 372         PGSR1 = 0x00000002;
 373         PGSR2 = 0x0001FC00;
 374         PGSR3 = 0x00001F81;
 375         PWER  = 0xC0000002;
 376         PRER  = 0x00000002;
 377         PFER  = 0x00000002;
 378
 379         /* for use I SRAM as framebuffer.  */
 380         PSLR |= 0x00000F04;
 381         PCFR  = 0x00000066;
 382 }
 383
 384 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
 385         /* Maintainer: Peter Barada */
 386         .phys_io        = 0x40000000,
 387         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 388         .boot_params    = 0xa0000100,
 389         .map_io         = lpd270_map_io,
 390         .init_irq       = lpd270_init_irq,
 391         .timer          = &pxa_timer,
 392         .init_machine   = lpd270_init,
 393 MACHINE_END