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lpd270.c

/*
 * linux/arch/arm/mach-pxa/lpd270.c
 *
 * Support for the LogicPD PXA270 Card Engine.
 * Derived from the mainstone code, which carries these notices:
 *
 * Author:  Nicolas Pitre
 * Created: Nov 05, 2002
 * Copyright:     MontaVista Software Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>

#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>

#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/pxa2xx-gpio.h>
#include <asm/arch/lpd270.h>
#include <asm/arch/audio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/irda.h>
#include <asm/arch/ohci.h>

#include "generic.h"
#include "devices.h"


static unsigned int lpd270_irq_enabled;

static void lpd270_mask_irq(unsigned int irq)
{
      int lpd270_irq = irq - LPD270_IRQ(0);

      __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);

      lpd270_irq_enabled &= ~(1 << lpd270_irq);
      __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
}

static void lpd270_unmask_irq(unsigned int irq)
{
      int lpd270_irq = irq - LPD270_IRQ(0);

      lpd270_irq_enabled |= 1 << lpd270_irq;
      __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
}

static struct irq_chip lpd270_irq_chip = {
      .name       = "CPLD",
      .ack        = lpd270_mask_irq,
      .mask       = lpd270_mask_irq,
      .unmask           = lpd270_unmask_irq,
};

static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
{
      unsigned long pending;

      pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
      do {
            GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
            if (likely(pending)) {
                  irq = LPD270_IRQ(0) + __ffs(pending);
                  desc = irq_desc + irq;
                  desc_handle_irq(irq, desc);

                  pending = __raw_readw(LPD270_INT_STATUS) &
                                    lpd270_irq_enabled;
            }
      } while (pending);
}

static void __init lpd270_init_irq(void)
{
      int irq;

      pxa27x_init_irq();

      __raw_writew(0, LPD270_INT_MASK);
      __raw_writew(0, LPD270_INT_STATUS);

      /* setup extra LogicPD PXA270 irqs */
      for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
            set_irq_chip(irq, &lpd270_irq_chip);
            set_irq_handler(irq, handle_level_irq);
            set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
      }
      set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
      set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
}


#ifdef CONFIG_PM
static int lpd270_irq_resume(struct sys_device *dev)
{
      __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
      return 0;
}

static struct sysdev_class lpd270_irq_sysclass = {
      .name = "cpld_irq",
      .resume = lpd270_irq_resume,
};

static struct sys_device lpd270_irq_device = {
      .cls = &lpd270_irq_sysclass,
};

static int __init lpd270_irq_device_init(void)
{
      int ret = sysdev_class_register(&lpd270_irq_sysclass);
      if (ret == 0)
            ret = sysdev_register(&lpd270_irq_device);
      return ret;
}

device_initcall(lpd270_irq_device_init);
#endif


static struct resource smc91x_resources[] = {
      [0] = {
            .start      = LPD270_ETH_PHYS,
            .end  = (LPD270_ETH_PHYS + 0xfffff),
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = LPD270_ETHERNET_IRQ,
            .end  = LPD270_ETHERNET_IRQ,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device smc91x_device = {
      .name       = "smc91x",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(smc91x_resources),
      .resource   = smc91x_resources,
};

static struct platform_device lpd270_audio_device = {
      .name       = "pxa2xx-ac97",
      .id         = -1,
};

static struct resource lpd270_flash_resources[] = {
      [0] = {
            .start      = PXA_CS0_PHYS,
            .end  = PXA_CS0_PHYS + SZ_64M - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = PXA_CS1_PHYS,
            .end  = PXA_CS1_PHYS + SZ_64M - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct mtd_partition lpd270_flash0_partitions[] = {
      {
            .name =           "Bootloader",
            .size =           0x00040000,
            .offset =   0,
            .mask_flags =     MTD_WRITEABLE  /* force read-only */
      }, {
            .name =           "Kernel",
            .size =           0x00400000,
            .offset =   0x00040000,
      }, {
            .name =           "Filesystem",
            .size =           MTDPART_SIZ_FULL,
            .offset =   0x00440000
      },
};

static struct flash_platform_data lpd270_flash_data[2] = {
      {
            .name       = "processor-flash",
            .map_name   = "cfi_probe",
            .parts            = lpd270_flash0_partitions,
            .nr_parts   = ARRAY_SIZE(lpd270_flash0_partitions),
      }, {
            .name       = "mainboard-flash",
            .map_name   = "cfi_probe",
            .parts            = NULL,
            .nr_parts   = 0,
      }
};

static struct platform_device lpd270_flash_device[2] = {
      {
            .name       = "pxa2xx-flash",
            .id         = 0,
            .dev = {
                  .platform_data    = &lpd270_flash_data[0],
            },
            .resource   = &lpd270_flash_resources[0],
            .num_resources    = 1,
      }, {
            .name       = "pxa2xx-flash",
            .id         = 1,
            .dev = {
                  .platform_data    = &lpd270_flash_data[1],
            },
            .resource   = &lpd270_flash_resources[1],
            .num_resources    = 1,
      },
};

static void lpd270_backlight_power(int on)
{
      if (on) {
            pxa_gpio_mode(GPIO16_PWM0_MD);
            pxa_set_cken(CKEN_PWM0, 1);
            PWM_CTRL0 = 0;
            PWM_PWDUTY0 = 0x3ff;
            PWM_PERVAL0 = 0x3ff;
      } else {
            PWM_CTRL0 = 0;
            PWM_PWDUTY0 = 0x0;
            PWM_PERVAL0 = 0x3FF;
            pxa_set_cken(CKEN_PWM0, 0);
      }
}

/* 5.7" TFT QVGA (LoLo display number 1) */
static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
      .pixclock         = 150000,
      .xres             = 320,
      .yres             = 240,
      .bpp              = 16,
      .hsync_len        = 0x14,
      .left_margin            = 0x28,
      .right_margin           = 0x0a,
      .vsync_len        = 0x02,
      .upper_margin           = 0x08,
      .lower_margin           = 0x14,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq057q3dc02 = {
      .modes                  = &sharp_lq057q3dc02_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

/* 12.1" TFT SVGA (LoLo display number 2) */
static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
      .pixclock         = 50000,
      .xres             = 800,
      .yres             = 600,
      .bpp              = 16,
      .hsync_len        = 0x05,
      .left_margin            = 0x52,
      .right_margin           = 0x05,
      .vsync_len        = 0x04,
      .upper_margin           = 0x14,
      .lower_margin           = 0x0a,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq121s1dg31 = {
      .modes                  = &sharp_lq121s1dg31_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

/* 3.6" TFT QVGA (LoLo display number 3) */
static struct pxafb_mode_info sharp_lq036q1da01_mode = {
      .pixclock         = 150000,
      .xres             = 320,
      .yres             = 240,
      .bpp              = 16,
      .hsync_len        = 0x0e,
      .left_margin            = 0x04,
      .right_margin           = 0x0a,
      .vsync_len        = 0x03,
      .upper_margin           = 0x03,
      .lower_margin           = 0x03,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq036q1da01 = {
      .modes                  = &sharp_lq036q1da01_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

/* 6.4" TFT VGA (LoLo display number 5) */
static struct pxafb_mode_info sharp_lq64d343_mode = {
      .pixclock         = 25000,
      .xres             = 640,
      .yres             = 480,
      .bpp              = 16,
      .hsync_len        = 0x31,
      .left_margin            = 0x89,
      .right_margin           = 0x19,
      .vsync_len        = 0x12,
      .upper_margin           = 0x22,
      .lower_margin           = 0x00,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq64d343 = {
      .modes                  = &sharp_lq64d343_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

/* 10.4" TFT VGA (LoLo display number 7) */
static struct pxafb_mode_info sharp_lq10d368_mode = {
      .pixclock         = 25000,
      .xres             = 640,
      .yres             = 480,
      .bpp              = 16,
      .hsync_len        = 0x31,
      .left_margin            = 0x89,
      .right_margin           = 0x19,
      .vsync_len        = 0x12,
      .upper_margin           = 0x22,
      .lower_margin           = 0x00,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq10d368 = {
      .modes                  = &sharp_lq10d368_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

/* 3.5" TFT QVGA (LoLo display number 8) */
static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
      .pixclock         = 150000,
      .xres             = 240,
      .yres             = 320,
      .bpp              = 16,
      .hsync_len        = 0x0e,
      .left_margin            = 0x0a,
      .right_margin           = 0x0a,
      .vsync_len        = 0x03,
      .upper_margin           = 0x05,
      .lower_margin           = 0x14,
      .sync             = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info sharp_lq035q7db02_20 = {
      .modes                  = &sharp_lq035q7db02_20_mode,
      .num_modes        = 1,
      .lccr0                  = 0x07800080,
      .lccr3                  = 0x00400000,
      .pxafb_backlight_power  = lpd270_backlight_power,
};

static struct pxafb_mach_info *lpd270_lcd_to_use;

static int __init lpd270_set_lcd(char *str)
{
      if (!strnicmp(str, "lq057q3dc02", 11)) {
            lpd270_lcd_to_use = &sharp_lq057q3dc02;
      } else if (!strnicmp(str, "lq121s1dg31", 11)) {
            lpd270_lcd_to_use = &sharp_lq121s1dg31;
      } else if (!strnicmp(str, "lq036q1da01", 11)) {
            lpd270_lcd_to_use = &sharp_lq036q1da01;
      } else if (!strnicmp(str, "lq64d343", 8)) {
            lpd270_lcd_to_use = &sharp_lq64d343;
      } else if (!strnicmp(str, "lq10d368", 8)) {
            lpd270_lcd_to_use = &sharp_lq10d368;
      } else if (!strnicmp(str, "lq035q7db02-20", 14)) {
            lpd270_lcd_to_use = &sharp_lq035q7db02_20;
      } else {
            printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
      }

      return 1;
}

__setup("lcd=", lpd270_set_lcd);

static struct platform_device *platform_devices[] __initdata = {
      &smc91x_device,
      &lpd270_audio_device,
      &lpd270_flash_device[0],
      &lpd270_flash_device[1],
};

static int lpd270_ohci_init(struct device *dev)
{
      /* setup Port1 GPIO pin. */
      pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN);     /* USBHPWR1 */
      pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT);    /* USBHPEN1 */

      /* Set the Power Control Polarity Low and Power Sense
         Polarity Low to active low. */
      UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
            ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);

      return 0;
}

static struct pxaohci_platform_data lpd270_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .init       = lpd270_ohci_init,
};

static void __init lpd270_init(void)
{
      lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
      lpd270_flash_data[1].width = 4;

      /*
       * System bus arbiter setting:
       * - Core_Park
       * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
       */
      ARB_CNTRL = ARB_CORE_PARK | 0x234;

      /*
       * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
       */
      pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);

      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

      if (lpd270_lcd_to_use != NULL)
            set_pxa_fb_info(lpd270_lcd_to_use);

      pxa_set_ohci_info(&lpd270_ohci_platform_data);
}


static struct map_desc lpd270_io_desc[] __initdata = {
      {
            .virtual    = LPD270_CPLD_VIRT,
            .pfn        = __phys_to_pfn(LPD270_CPLD_PHYS),
            .length           = LPD270_CPLD_SIZE,
            .type       = MT_DEVICE,
      },
};

static void __init lpd270_map_io(void)
{
      pxa_map_io();
      iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));

      /* initialize sleep mode regs (wake-up sources, etc) */
      PGSR0 = 0x00008800;
      PGSR1 = 0x00000002;
      PGSR2 = 0x0001FC00;
      PGSR3 = 0x00001F81;
      PWER  = 0xC0000002;
      PRER  = 0x00000002;
      PFER  = 0x00000002;

      /* for use I SRAM as framebuffer.  */
      PSLR |= 0x00000F04;
      PCFR  = 0x00000066;
}

MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
      /* Maintainer: Peter Barada */
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .boot_params      = 0xa0000100,
      .map_io           = lpd270_map_io,
      .init_irq   = lpd270_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = lpd270_init,
MACHINE_END

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