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trizeps4.c

/*
 *  linux/arch/arm/mach-pxa/trizeps4.c
 *
 *  Support for the Keith und Koep Trizeps4 Module Platform.
 *
 *  Author: Jürgen Schindele
 *  Created:      20 02, 2006
 *  Copyright:    Jürgen Schindele
 *
 *  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/kernel.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/delay.h>
#include <linux/gpio.h>
#include <linux/dm9000.h>
#include <linux/mtd/physmap.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/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 <mach/pxa27x.h>
#include <mach/trizeps4.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/irda.h>
#include <mach/ohci.h>
#include <mach/smemc.h>
#include <plat/i2c.h>

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

/*    comment out the following line if you want to use the
 *    Standard UART from PXA for serial / irda transmission
 *    and acivate it if you have status leds connected */
#define STATUS_LEDS_ON_STUART_PINS 1

/*****************************************************************************
 * MultiFunctionPins of CPU
 *****************************************************************************/
static unsigned long trizeps4_pin_config[] __initdata = {
      /* Chip Selects */
      GPIO15_nCS_1,           /* DiskOnChip CS */
      GPIO93_GPIO,            /* TRIZEPS4_DOC_IRQ */
      GPIO94_GPIO,            /* DOC lock */

      GPIO78_nCS_2,           /* DM9000 CS */
      GPIO101_GPIO,           /* TRIZEPS4_ETH_IRQ */

      GPIO79_nCS_3,           /* Logic CS */
      GPIO0_GPIO | WAKEUP_ON_EDGE_RISE,   /* Logic irq */

      /* AC97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,

      /* LCD - 16bpp Active TFT */
      GPIOxx_LCD_TFT_16BPP,

      /* UART */
      GPIO9_FFUART_CTS,
      GPIO10_FFUART_DCD,
      GPIO16_FFUART_TXD,
      GPIO33_FFUART_DSR,
      GPIO38_FFUART_RI,
      GPIO82_FFUART_DTR,
      GPIO83_FFUART_RTS,
      GPIO96_FFUART_RXD,

      GPIO42_BTUART_RXD,
      GPIO43_BTUART_TXD,
      GPIO44_BTUART_CTS,
      GPIO45_BTUART_RTS,
#ifdef STATUS_LEDS_ON_STUART_PINS
      GPIO46_GPIO,
      GPIO47_GPIO,
#else
      GPIO46_STUART_RXD,
      GPIO47_STUART_TXD,
#endif
      /* PCMCIA */
      GPIO11_GPIO,                  /* TRIZEPS4_CD_IRQ */
      GPIO13_GPIO,                  /* TRIZEPS4_READY_NINT */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO54_nPCE_2,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,
      GPIO102_nPCE_1,
      GPIO104_PSKTSEL,

      /* MultiMediaCard */
      GPIO32_MMC_CLK,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,
      GPIO112_MMC_CMD,
      GPIO12_GPIO,                  /* TRIZEPS4_MMC_IRQ */

      /* USB OHCI */
      GPIO88_USBH1_PWR,       /* USBHPWR1 */
      GPIO89_USBH1_PEN,       /* USBHPEN1 */

      /* I2C */
      GPIO117_I2C_SCL,
      GPIO118_I2C_SDA,
};

static unsigned long trizeps4wl_pin_config[] __initdata = {
      /* SSP 2 */
      GPIO14_SSP2_SFRM,
      GPIO19_SSP2_SCLK,
      GPIO53_GPIO,                  /* TRIZEPS4_SPI_IRQ */
      GPIO86_SSP2_RXD,
      GPIO87_SSP2_TXD,
};

/****************************************************************************
 * ONBOARD FLASH
 ****************************************************************************/
static struct mtd_partition trizeps4_partitions[] = {
      {
            .name =           "Bootloader",
            .offset =   0x00000000,
            .size =           0x00040000,
            .mask_flags =     MTD_WRITEABLE  /* force read-only */
      }, {
            .name =           "Backup",
            .offset =   0x00040000,
            .size =           0x00040000,
      }, {
            .name =           "Image",
            .offset =   0x00080000,
            .size =           0x01080000,
      }, {
            .name =           "IPSM",
            .offset =   0x01100000,
            .size =           0x00e00000,
      }, {
            .name =           "Registry",
            .offset =   0x01f00000,
            .size =           MTDPART_SIZ_FULL,
      }
};

static struct physmap_flash_data trizeps4_flash_data[] = {
      {
            .width            = 4,              /* bankwidth in bytes */
            .parts            = trizeps4_partitions,
            .nr_parts   = ARRAY_SIZE(trizeps4_partitions)
      }
};

static struct resource flash_resource = {
      .start      = PXA_CS0_PHYS,
      .end  = PXA_CS0_PHYS + SZ_32M - 1,
      .flags      = IORESOURCE_MEM,
};

static struct platform_device flash_device = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev = {
            .platform_data = trizeps4_flash_data,
      },
      .resource = &flash_resource,
      .num_resources = 1,
};

/****************************************************************************
 * DAVICOM DM9000 Ethernet
 ****************************************************************************/
static struct resource dm9000_resources[] = {
      [0] = {
            .start      = TRIZEPS4_ETH_PHYS+0x300,
            .end  = TRIZEPS4_ETH_PHYS+0x400-1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = TRIZEPS4_ETH_PHYS+0x8300,
            .end  = TRIZEPS4_ETH_PHYS+0x8400-1,
            .flags      = IORESOURCE_MEM,
      },
      [2] = {
            .start      = TRIZEPS4_ETH_IRQ,
            .end  = TRIZEPS4_ETH_IRQ,
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      },
};

static struct dm9000_plat_data tri_dm9000_platdata = {
      .flags            = DM9000_PLATF_32BITONLY,
};

static struct platform_device dm9000_device = {
      .name       = "dm9000",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(dm9000_resources),
      .resource   = dm9000_resources,
      .dev        = {
            .platform_data = &tri_dm9000_platdata,
      }
};

/****************************************************************************
 * LED's on GPIO pins of PXA
 ****************************************************************************/
static struct gpio_led trizeps4_led[] = {
#ifdef STATUS_LEDS_ON_STUART_PINS
      {
            .name = "led0:orange:heartbeat",    /* */
            .default_trigger = "heartbeat",
            .gpio = GPIO_HEARTBEAT_LED,
            .active_low = 1,
      },
      {
            .name = "led1:yellow:cpubusy",            /* */
            .default_trigger = "cpu-busy",
            .gpio = GPIO_SYS_BUSY_LED,
            .active_low = 1,
      },
#endif
};

static struct gpio_led_platform_data trizeps4_led_data = {
      .leds       = trizeps4_led,
      .num_leds   = ARRAY_SIZE(trizeps4_led),
};

static struct platform_device leds_devices = {
      .name       = "leds-gpio",
      .id         = -1,
      .dev        = {
            .platform_data    = &trizeps4_led_data,
      },
};

static struct platform_device *trizeps4_devices[] __initdata = {
      &flash_device,
      &dm9000_device,
      &leds_devices,
};

static struct platform_device *trizeps4wl_devices[] __initdata = {
      &flash_device,
      &leds_devices,
};

static short trizeps_conxs_bcr;

/* PCCARD power switching supports only 3,3V */
void board_pcmcia_power(int power)
{
      if (power) {
            /* switch power on, put in reset and enable buffers */
            trizeps_conxs_bcr |= power;
            trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
            trizeps_conxs_bcr &= ~ConXS_BCR_CF_BUF_EN;
            BCR_writew(trizeps_conxs_bcr);
            /* wait a little */
            udelay(2000);
            /* take reset away */
            trizeps_conxs_bcr &= ~ConXS_BCR_CF_RESET;
            BCR_writew(trizeps_conxs_bcr);
            udelay(2000);
      } else {
            /* put in reset */
            trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
            BCR_writew(trizeps_conxs_bcr);
            udelay(1000);
            /* switch power off */
            trizeps_conxs_bcr &= ~0xf;
            BCR_writew(trizeps_conxs_bcr);
      }
      pr_debug("%s: o%s 0x%x\n", __func__, power ? "n" : "ff",
                  trizeps_conxs_bcr);
}
EXPORT_SYMBOL(board_pcmcia_power);

/* backlight power switching for LCD panel */
static void board_backlight_power(int on)
{
      if (on)
            trizeps_conxs_bcr |= ConXS_BCR_L_DISP;
      else
            trizeps_conxs_bcr &= ~ConXS_BCR_L_DISP;

      pr_debug("%s: o%s 0x%x\n", __func__, on ? "n" : "ff",
                  trizeps_conxs_bcr);
      BCR_writew(trizeps_conxs_bcr);
}

/* a I2C based RTC is known on CONXS board */
static struct i2c_board_info trizeps4_i2c_devices[] __initdata = {
      { I2C_BOARD_INFO("rtc-pcf8593", 0x51) }
};

/****************************************************************************
 * MMC card slot external to module
 ****************************************************************************/
static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int,
            void *data)
{
      int err;

      err = request_irq(TRIZEPS4_MMC_IRQ, mci_detect_int,
            IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_SAMPLE_RANDOM,
            "MMC card detect", data);
      if (err) {
            printk(KERN_ERR "trizeps4_mci_init: MMC/SD: can't request"
                                    "MMC card detect IRQ\n");
            return -1;
      }
      return 0;
}

static void trizeps4_mci_exit(struct device *dev, void *data)
{
      free_irq(TRIZEPS4_MMC_IRQ, data);
}

static struct pxamci_platform_data trizeps4_mci_platform_data = {
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .detect_delay_ms= 10,
      .init             = trizeps4_mci_init,
      .exit       = trizeps4_mci_exit,
      .get_ro           = NULL,     /* write-protection not supported */
      .setpower   = NULL,     /* power-switching not supported */
      .gpio_card_detect = -1,
      .gpio_card_ro     = -1,
      .gpio_power = -1,
};

/****************************************************************************
 * IRDA mode switching on stuart
 ****************************************************************************/
#ifndef STATUS_LEDS_ON_STUART_PINS
static short trizeps_conxs_ircr;

static int trizeps4_irda_startup(struct device *dev)
{
      trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
      IRCR_writew(trizeps_conxs_ircr);
      return 0;
}

static void trizeps4_irda_shutdown(struct device *dev)
{
      trizeps_conxs_ircr |= ConXS_IRCR_SD;
      IRCR_writew(trizeps_conxs_ircr);
}

static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
{
      unsigned long flags;

      local_irq_save(flags);
      /* Switch mode */
      if (mode & IR_SIRMODE)
            trizeps_conxs_ircr &= ~ConXS_IRCR_MODE;   /* Slow mode */
      else if (mode & IR_FIRMODE)
            trizeps_conxs_ircr |= ConXS_IRCR_MODE;    /* Fast mode */

      /* Switch power */
      if (mode & IR_OFF)
            trizeps_conxs_ircr |= ConXS_IRCR_SD;
      else
            trizeps_conxs_ircr &= ~ConXS_IRCR_SD;

      IRCR_writew(trizeps_conxs_ircr);
      local_irq_restore(flags);

      pxa2xx_transceiver_mode(dev, mode);
}

static struct pxaficp_platform_data trizeps4_ficp_platform_data = {
      .gpio_pwdown            = -1,
      .transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
      .transceiver_mode = trizeps4_irda_transceiver_mode,
      .startup          = trizeps4_irda_startup,
      .shutdown         = trizeps4_irda_shutdown,
};
#endif

/****************************************************************************
 * OHCI USB port
 ****************************************************************************/
static struct pxaohci_platform_data trizeps4_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .flags            = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};

static struct map_desc trizeps4_io_desc[] __initdata = {
      {     /* ConXS CFSR */
            .virtual    = TRIZEPS4_CFSR_VIRT,
            .pfn        = __phys_to_pfn(TRIZEPS4_CFSR_PHYS),
            .length           = 0x00001000,
            .type       = MT_DEVICE
      },
      {     /* ConXS BCR */
            .virtual    = TRIZEPS4_BOCR_VIRT,
            .pfn        = __phys_to_pfn(TRIZEPS4_BOCR_PHYS),
            .length           = 0x00001000,
            .type       = MT_DEVICE
      },
      {     /* ConXS IRCR */
            .virtual    = TRIZEPS4_IRCR_VIRT,
            .pfn        = __phys_to_pfn(TRIZEPS4_IRCR_PHYS),
            .length           = 0x00001000,
            .type       = MT_DEVICE
      },
      {     /* ConXS DCR */
            .virtual    = TRIZEPS4_DICR_VIRT,
            .pfn        = __phys_to_pfn(TRIZEPS4_DICR_PHYS),
            .length           = 0x00001000,
            .type       = MT_DEVICE
      },
      {     /* ConXS UPSR */
            .virtual    = TRIZEPS4_UPSR_VIRT,
            .pfn        = __phys_to_pfn(TRIZEPS4_UPSR_PHYS),
            .length           = 0x00001000,
            .type       = MT_DEVICE
      }
};

static struct pxafb_mode_info sharp_lcd_mode = {
      .pixclock   = 78000,
      .xres       = 640,
      .yres       = 480,
      .bpp        = 8,
      .hsync_len  = 4,
      .left_margin      = 4,
      .right_margin     = 4,
      .vsync_len  = 2,
      .upper_margin     = 0,
      .lower_margin     = 0,
      .sync       = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
      .cmap_greyscale   = 0,
};

static struct pxafb_mach_info sharp_lcd = {
      .modes            = &sharp_lcd_mode,
      .num_modes  = 1,
      .lcd_conn   = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL,
      .cmap_inverse     = 0,
      .cmap_static      = 0,
      .pxafb_backlight_power = board_backlight_power,
};

static struct pxafb_mode_info toshiba_lcd_mode = {
      .pixclock   = 39720,
      .xres       = 640,
      .yres       = 480,
      .bpp        = 8,
      .hsync_len  = 63,
      .left_margin      = 12,
      .right_margin     = 12,
      .vsync_len  = 4,
      .upper_margin     = 32,
      .lower_margin     = 10,
      .sync       = 0,
      .cmap_greyscale   = 0,
};

static struct pxafb_mach_info toshiba_lcd = {
      .modes            = &toshiba_lcd_mode,
      .num_modes  = 1,
      .lcd_conn   = (LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL),
      .cmap_inverse     = 0,
      .cmap_static      = 0,
      .pxafb_backlight_power = board_backlight_power,
};

static void __init trizeps4_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4_pin_config));
      if (machine_is_trizeps4wl()) {
            pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4wl_pin_config));
            platform_add_devices(trizeps4wl_devices,
                              ARRAY_SIZE(trizeps4wl_devices));
      } else {
            platform_add_devices(trizeps4_devices,
                              ARRAY_SIZE(trizeps4_devices));
      }

      pxa_set_ffuart_info(NULL);
      pxa_set_btuart_info(NULL);
      pxa_set_stuart_info(NULL);

      if (0)      /* dont know how to determine LCD */
            set_pxa_fb_info(&sharp_lcd);
      else
            set_pxa_fb_info(&toshiba_lcd);

      pxa_set_mci_info(&trizeps4_mci_platform_data);
#ifndef STATUS_LEDS_ON_STUART_PINS
      pxa_set_ficp_info(&trizeps4_ficp_platform_data);
#endif
      pxa_set_ohci_info(&trizeps4_ohci_platform_data);
      pxa_set_ac97_info(NULL);
      pxa_set_i2c_info(NULL);
      i2c_register_board_info(0, trizeps4_i2c_devices,
                              ARRAY_SIZE(trizeps4_i2c_devices));

      /* this is the reset value */
      trizeps_conxs_bcr = 0x00A0;

      BCR_writew(trizeps_conxs_bcr);
      board_backlight_power(1);
}

static void __init trizeps4_map_io(void)
{
      pxa27x_map_io();
      iotable_init(trizeps4_io_desc, ARRAY_SIZE(trizeps4_io_desc));

      if ((__raw_readl(MSC0) & 0x8) && (__raw_readl(BOOT_DEF) & 0x1)) {
            /* if flash is 16 bit wide its a Trizeps4 WL */
            __machine_arch_type = MACH_TYPE_TRIZEPS4WL;
            trizeps4_flash_data[0].width = 2;
      } else {
            /* if flash is 32 bit wide its a Trizeps4 */
            __machine_arch_type = MACH_TYPE_TRIZEPS4;
            trizeps4_flash_data[0].width = 4;
      }
}

MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
      /* MAINTAINER("Jürgen Schindele") */
      .boot_params      = TRIZEPS4_SDRAM_BASE + 0x100,
      .init_machine     = trizeps4_init,
      .map_io           = trizeps4_map_io,
      .init_irq   = pxa27x_init_irq,
      .timer            = &pxa_timer,
MACHINE_END

MACHINE_START(TRIZEPS4WL, "Keith und Koep Trizeps IV-WL module")
      /* MAINTAINER("Jürgen Schindele") */
      .boot_params      = TRIZEPS4_SDRAM_BASE + 0x100,
      .init_machine     = trizeps4_init,
      .map_io           = trizeps4_map_io,
      .init_irq   = pxa27x_init_irq,
      .timer            = &pxa_timer,
MACHINE_END

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