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tosa.c

/*
 *  Support for Sharp SL-C6000x PDAs
 *  Model: (Tosa)
 *
 *  Copyright (c) 2005 Dirk Opfer
 *
 *    Based on code written by Sharp/Lineo for 2.4 kernels
 *
 *  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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/mfp-pxa25x.h>
#include <asm/arch/irda.h>
#include <asm/arch/i2c.h>
#include <asm/arch/mmc.h>
#include <asm/arch/udc.h>

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

#include <asm/hardware/scoop.h>
#include <asm/mach/sharpsl_param.h>

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

static unsigned long tosa_pin_config[] = {
      GPIO78_nCS_2, /* Scoop */
      GPIO80_nCS_4, /* tg6393xb */
      GPIO33_nCS_5, /* Scoop */

      // GPIO76 CARD_VCC_ON1

      GPIO19_GPIO, /* Reset out */
      GPIO1_RST | WAKEUP_ON_EDGE_FALL,

      GPIO0_GPIO | WAKEUP_ON_EDGE_FALL, /* WAKE_UP */
      GPIO2_GPIO | WAKEUP_ON_EDGE_BOTH, /* AC_IN */
      GPIO3_GPIO | WAKEUP_ON_EDGE_FALL, /* RECORD */
      GPIO4_GPIO | WAKEUP_ON_EDGE_FALL, /* SYNC */
      GPIO20_GPIO, /* EAR_IN */
      GPIO22_GPIO, /* On */

      GPIO5_GPIO, /* USB_IN */
      GPIO32_GPIO, /* Pen IRQ */

      GPIO7_GPIO, /* Jacket Detect */
      GPIO14_GPIO, /* BAT0_CRG */
      GPIO12_GPIO, /* BAT1_CRG */
      GPIO17_GPIO, /* BAT0_LOW */
      GPIO84_GPIO, /* BAT1_LOW */
      GPIO38_GPIO, /* BAT_LOCK */

      GPIO11_3_6MHz,
      GPIO15_GPIO, /* TC6393XB IRQ */
      GPIO18_RDY,
      GPIO27_GPIO, /* LCD Sync */

      /* MMC */
      GPIO6_MMC_CLK,
      GPIO8_MMC_CS0,
      GPIO9_GPIO, /* Detect */
      // GPIO10 nSD_INT

      /* CF */
      GPIO13_GPIO, /* CD_IRQ */
      GPIO21_GPIO, /* Main Slot IRQ */
      GPIO36_GPIO, /* Jacket Slot IRQ */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO52_nPCE_1,
      GPIO53_nPCE_2,
      GPIO54_nPSKTSEL,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,

      /* AC97 */
      GPIO31_AC97_SYNC,
      GPIO30_AC97_SDATA_OUT,
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      // GPIO79 nAUD_IRQ

      /* FFUART */
      GPIO34_FFUART_RXD,
      GPIO35_FFUART_CTS,
      GPIO37_FFUART_DSR,
      GPIO39_FFUART_TXD,
      GPIO40_FFUART_DTR,
      GPIO41_FFUART_RTS,

      /* BTUART */
      GPIO42_BTUART_RXD,
      GPIO43_BTUART_TXD,
      GPIO44_BTUART_CTS,
      GPIO45_BTUART_RTS,

      /* IrDA */
      GPIO46_STUART_RXD,
      GPIO47_STUART_TXD,

      /* Keybd */
      GPIO58_GPIO,
      GPIO59_GPIO,
      GPIO60_GPIO,
      GPIO61_GPIO,
      GPIO62_GPIO,
      GPIO63_GPIO,
      GPIO64_GPIO,
      GPIO65_GPIO,
      GPIO66_GPIO,
      GPIO67_GPIO,
      GPIO68_GPIO,
      GPIO69_GPIO,
      GPIO70_GPIO,
      GPIO71_GPIO,
      GPIO72_GPIO,
      GPIO73_GPIO,
      GPIO74_GPIO,
      GPIO75_GPIO,

      /* SPI */
      GPIO81_SSP2_CLK_OUT,
      GPIO82_SSP2_FRM_OUT,
      GPIO83_SSP2_TXD,
};

/*
 * SCOOP Device
 */
static struct resource tosa_scoop_resources[] = {
      [0] = {
            .start      = TOSA_CF_PHYS,
            .end  = TOSA_CF_PHYS + 0xfff,
            .flags      = IORESOURCE_MEM,
      },
};

static struct scoop_config tosa_scoop_setup = {
      .io_dir     = TOSA_SCOOP_IO_DIR,
      .gpio_base  = TOSA_SCOOP_GPIO_BASE,
};

static struct platform_device tosascoop_device = {
      .name       = "sharp-scoop",
      .id         = 0,
      .dev        = {
            .platform_data    = &tosa_scoop_setup,
      },
      .num_resources    = ARRAY_SIZE(tosa_scoop_resources),
      .resource   = tosa_scoop_resources,
};


/*
 * SCOOP Device Jacket
 */
static struct resource tosa_scoop_jc_resources[] = {
      [0] = {
            .start            = TOSA_SCOOP_PHYS + 0x40,
            .end        = TOSA_SCOOP_PHYS + 0xfff,
            .flags            = IORESOURCE_MEM,
      },
};

static struct scoop_config tosa_scoop_jc_setup = {
      .io_dir     = TOSA_SCOOP_JC_IO_DIR,
      .gpio_base  = TOSA_SCOOP_JC_GPIO_BASE,
};

static struct platform_device tosascoop_jc_device = {
      .name       = "sharp-scoop",
      .id         = 1,
      .dev        = {
            .platform_data    = &tosa_scoop_jc_setup,
            .parent     = &tosascoop_device.dev,
      },
      .num_resources    = ARRAY_SIZE(tosa_scoop_jc_resources),
      .resource   = tosa_scoop_jc_resources,
};

/*
 * PCMCIA
 */
static struct scoop_pcmcia_dev tosa_pcmcia_scoop[] = {
{
      .dev        = &tosascoop_device.dev,
      .irq        = TOSA_IRQ_GPIO_CF_IRQ,
      .cd_irq     = TOSA_IRQ_GPIO_CF_CD,
      .cd_irq_str = "PCMCIA0 CD",
},{
      .dev        = &tosascoop_jc_device.dev,
      .irq        = TOSA_IRQ_GPIO_JC_CF_IRQ,
      .cd_irq     = -1,
},
};

static struct scoop_pcmcia_config tosa_pcmcia_config = {
      .devs         = &tosa_pcmcia_scoop[0],
      .num_devs     = 2,
};

/*
 * USB Device Controller
 */
static struct pxa2xx_udc_mach_info udc_info __initdata = {
      .gpio_pullup            = TOSA_GPIO_USB_PULLUP,
      .gpio_vbus        = TOSA_GPIO_USB_IN,
      .gpio_vbus_inverted     = 1,
};

/*
 * MMC/SD Device
 */
static struct pxamci_platform_data tosa_mci_platform_data;

static int tosa_mci_init(struct device *dev, irq_handler_t tosa_detect_int, void *data)
{
      int err;

      tosa_mci_platform_data.detect_delay = msecs_to_jiffies(250);

      err = request_irq(TOSA_IRQ_GPIO_nSD_DETECT, tosa_detect_int,
                    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                        "MMC/SD card detect", data);
      if (err) {
            printk(KERN_ERR "tosa_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
            goto err_irq;
      }

      err = gpio_request(TOSA_GPIO_SD_WP, "sd_wp");
      if (err) {
            printk(KERN_ERR "tosa_mci_init: can't request SD_WP gpio\n");
            goto err_gpio_wp;
      }
      err = gpio_direction_input(TOSA_GPIO_SD_WP);
      if (err)
            goto err_gpio_wp_dir;

      err = gpio_request(TOSA_GPIO_PWR_ON, "sd_pwr");
      if (err) {
            printk(KERN_ERR "tosa_mci_init: can't request SD_PWR gpio\n");
            goto err_gpio_pwr;
      }
      err = gpio_direction_output(TOSA_GPIO_PWR_ON, 0);
      if (err)
            goto err_gpio_pwr_dir;

      return 0;

err_gpio_pwr_dir:
      gpio_free(TOSA_GPIO_PWR_ON);
err_gpio_pwr:
err_gpio_wp_dir:
      gpio_free(TOSA_GPIO_SD_WP);
err_gpio_wp:
      free_irq(TOSA_IRQ_GPIO_nSD_DETECT, data);
err_irq:
      return err;
}

static void tosa_mci_setpower(struct device *dev, unsigned int vdd)
{
      struct pxamci_platform_data* p_d = dev->platform_data;

      if (( 1 << vdd) & p_d->ocr_mask) {
            gpio_set_value(TOSA_GPIO_PWR_ON, 1);
      } else {
            gpio_set_value(TOSA_GPIO_PWR_ON, 0);
      }
}

static int tosa_mci_get_ro(struct device *dev)
{
      return gpio_get_value(TOSA_GPIO_SD_WP);
}

static void tosa_mci_exit(struct device *dev, void *data)
{
      gpio_free(TOSA_GPIO_PWR_ON);
      gpio_free(TOSA_GPIO_SD_WP);
      free_irq(TOSA_IRQ_GPIO_nSD_DETECT, data);
}

static struct pxamci_platform_data tosa_mci_platform_data = {
      .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
      .init           = tosa_mci_init,
      .get_ro           = tosa_mci_get_ro,
      .setpower       = tosa_mci_setpower,
      .exit           = tosa_mci_exit,
};

/*
 * Irda
 */
static int tosa_irda_startup(struct device *dev)
{
      int ret;

      ret = gpio_request(TOSA_GPIO_IR_POWERDWN, "IrDA powerdown");
      if (ret)
            return ret;

      ret = gpio_direction_output(TOSA_GPIO_IR_POWERDWN, 0);
      if (ret)
            gpio_free(TOSA_GPIO_IR_POWERDWN);

      return ret;
      }

static void tosa_irda_shutdown(struct device *dev)
{
      gpio_free(TOSA_GPIO_IR_POWERDWN);
}

static void tosa_irda_transceiver_mode(struct device *dev, int mode)
{
      gpio_set_value(TOSA_GPIO_IR_POWERDWN, !(mode & IR_OFF));
}

static struct pxaficp_platform_data tosa_ficp_platform_data = {
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
      .transceiver_mode = tosa_irda_transceiver_mode,
      .startup = tosa_irda_startup,
      .shutdown = tosa_irda_shutdown,
};

/*
 * Tosa Keyboard
 */
static struct platform_device tosakbd_device = {
      .name       = "tosa-keyboard",
      .id         = -1,
};

static struct gpio_keys_button tosa_gpio_keys[] = {
      /*
       * Two following keys are directly tied to "ON" button of tosa. Why?
       * The first one can be used as a wakeup source, the second can't;
       * also the first one is OR of ac_powered and on_button.
       */
      {
            .type = EV_PWR,
            .code = KEY_RESERVED,
            .gpio = TOSA_GPIO_POWERON,
            .desc = "Poweron",
            .wakeup     = 1,
            .active_low = 1,
      },
      {
            .type = EV_PWR,
            .code = KEY_SUSPEND,
            .gpio = TOSA_GPIO_ON_KEY,
            .desc = "On key",
            /*
             * can't be used as wakeup
             * .wakeup  = 1,
             */
            .active_low = 1,
      },
      {
            .type = EV_KEY,
            .code = TOSA_KEY_RECORD,
            .gpio = TOSA_GPIO_RECORD_BTN,
            .desc = "Record Button",
            .wakeup     = 1,
            .active_low = 1,
      },
      {
            .type = EV_KEY,
            .code = TOSA_KEY_SYNC,
            .gpio = TOSA_GPIO_SYNC,
            .desc = "Sync Button",
            .wakeup     = 1,
            .active_low = 1,
      },
};

static struct gpio_keys_platform_data tosa_gpio_keys_platform_data = {
      .buttons    = tosa_gpio_keys,
      .nbuttons   = ARRAY_SIZE(tosa_gpio_keys),
};

static struct platform_device tosa_gpio_keys_device = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data    = &tosa_gpio_keys_platform_data,
      },
};

/*
 * Tosa LEDs
 */
static struct gpio_led tosa_gpio_leds[] = {
      {
            .name             = "tosa:amber:charge",
            .default_trigger  = "main-battery-charging",
            .gpio             = TOSA_GPIO_CHRG_ERR_LED,
      },
      {
            .name             = "tosa:green:mail",
            .default_trigger  = "nand-disk",
            .gpio             = TOSA_GPIO_NOTE_LED,
      },
      {
            .name             = "tosa:dual:wlan",
            .default_trigger  = "none",
            .gpio             = TOSA_GPIO_WLAN_LED,
      },
      {
            .name             = "tosa:blue:bluetooth",
            .default_trigger  = "none",
            .gpio             = TOSA_GPIO_BT_LED,
      },
};

static struct gpio_led_platform_data tosa_gpio_leds_platform_data = {
      .leds       = tosa_gpio_leds,
      .num_leds   = ARRAY_SIZE(tosa_gpio_leds),
};

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

static struct platform_device *devices[] __initdata = {
      &tosascoop_device,
      &tosascoop_jc_device,
      &tosakbd_device,
      &tosa_gpio_keys_device,
      &tosaled_device,
};

static void tosa_poweroff(void)
{
      gpio_direction_output(TOSA_GPIO_ON_RESET, 0);
      gpio_set_value(TOSA_GPIO_ON_RESET, 1);

      mdelay(1000);
      arm_machine_restart('h');
}

static void tosa_restart(char mode)
{
      /* Bootloader magic for a reboot */
      if((MSC0 & 0xffff0000) == 0x7ff00000)
            MSC0 = (MSC0 & 0xffff) | 0x7ee00000;

      tosa_poweroff();
}

static void __init tosa_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(tosa_pin_config));
      gpio_set_wake(MFP_PIN_GPIO1, 1);
      /* We can't pass to gpio-keys since it will drop the Reset altfunc */

      pm_power_off = tosa_poweroff;
      arm_pm_restart = tosa_restart;

      PCFR |= PCFR_OPDE;

      /* enable batt_fault */
      PMCR = 0x01;

      pxa_set_mci_info(&tosa_mci_platform_data);
      pxa_set_udc_info(&udc_info);
      pxa_set_ficp_info(&tosa_ficp_platform_data);
      pxa_set_i2c_info(NULL);
      platform_scoop_config = &tosa_pcmcia_config;

      platform_add_devices(devices, ARRAY_SIZE(devices));
}

static void __init fixup_tosa(struct machine_desc *desc,
            struct tag *tags, char **cmdline, struct meminfo *mi)
{
      sharpsl_save_param();
      mi->nr_banks=1;
      mi->bank[0].start = 0xa0000000;
      mi->bank[0].node = 0;
      mi->bank[0].size = (64*1024*1024);
}

MACHINE_START(TOSA, "SHARP Tosa")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup          = fixup_tosa,
      .map_io         = pxa_map_io,
      .init_irq       = pxa25x_init_irq,
      .init_machine   = tosa_init,
      .timer          = &pxa_timer,
MACHINE_END

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