Logo Search packages:      
Sourcecode: linux-2.6 version File versions

corgi.c

/*
 * Support for Sharp SL-C7xx PDAs
 * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
 *
 * Copyright (c) 2004-2005 Richard Purdie
 *
 * Based on Sharp's 2.4 kernel patches/lubbock.c
 *
 * 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 <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/system.h>

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

#include <asm/arch/pxa-regs.h>
#include <asm/arch/irda.h>
#include <asm/arch/mmc.h>
#include <asm/arch/udc.h>
#include <asm/arch/corgi.h>
#include <asm/arch/sharpsl.h>

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

#include "generic.h"
#include "sharpsl.h"


/*
 * Corgi SCOOP Device
 */
static struct resource corgi_scoop_resources[] = {
      [0] = {
            .start            = 0x10800000,
            .end        = 0x10800fff,
            .flags            = IORESOURCE_MEM,
      },
};

static struct scoop_config corgi_scoop_setup = {
      .io_dir     = CORGI_SCOOP_IO_DIR,
      .io_out           = CORGI_SCOOP_IO_OUT,
};

struct platform_device corgiscoop_device = {
      .name       = "sharp-scoop",
      .id         = -1,
      .dev        = {
            .platform_data    = &corgi_scoop_setup,
      },
      .num_resources    = ARRAY_SIZE(corgi_scoop_resources),
      .resource   = corgi_scoop_resources,
};

static void corgi_pcmcia_init(void)
{
      /* Setup default state of GPIO outputs
         before we enable them as outputs. */
      GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
            GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
            GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) |
            GPIO_bit(GPIO53_nPCE_2);

      pxa_gpio_mode(GPIO48_nPOE_MD);
      pxa_gpio_mode(GPIO49_nPWE_MD);
      pxa_gpio_mode(GPIO50_nPIOR_MD);
      pxa_gpio_mode(GPIO51_nPIOW_MD);
      pxa_gpio_mode(GPIO55_nPREG_MD);
      pxa_gpio_mode(GPIO56_nPWAIT_MD);
      pxa_gpio_mode(GPIO57_nIOIS16_MD);
      pxa_gpio_mode(GPIO52_nPCE_1_MD);
      pxa_gpio_mode(GPIO53_nPCE_2_MD);
      pxa_gpio_mode(GPIO54_pSKTSEL_MD);
}

static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = {
{
      .dev        = &corgiscoop_device.dev,
      .irq        = CORGI_IRQ_GPIO_CF_IRQ,
      .cd_irq     = CORGI_IRQ_GPIO_CF_CD,
      .cd_irq_str = "PCMCIA0 CD",
},
};

static struct scoop_pcmcia_config corgi_pcmcia_config = {
      .devs         = &corgi_pcmcia_scoop[0],
      .num_devs     = 1,
      .pcmcia_init  = corgi_pcmcia_init,
};

EXPORT_SYMBOL(corgiscoop_device);


/*
 * Corgi SSP Device
 *
 * Set the parent as the scoop device because a lot of SSP devices
 * also use scoop functions and this makes the power up/down order
 * work correctly.
 */
struct platform_device corgissp_device = {
      .name       = "corgi-ssp",
      .dev        = {
            .parent = &corgiscoop_device.dev,
      },
      .id         = -1,
};

struct corgissp_machinfo corgi_ssp_machinfo = {
      .port       = 1,
      .cs_lcdcon  = CORGI_GPIO_LCDCON_CS,
      .cs_ads7846 = CORGI_GPIO_ADS7846_CS,
      .cs_max1111 = CORGI_GPIO_MAX1111_CS,
      .clk_lcdcon = 76,
      .clk_ads7846      = 2,
      .clk_max1111      = 8,
};


/*
 * Corgi Backlight Device
 */
static struct corgibl_machinfo corgi_bl_machinfo = {
      .max_intensity = 0x2f,
      .default_intensity = 0x1f,
      .limit_mask = 0x0b,
      .set_bl_intensity = corgi_bl_set_intensity,
};

static struct platform_device corgibl_device = {
      .name       = "corgi-bl",
      .dev        = {
            .parent = &corgifb_device.dev,
            .platform_data    = &corgi_bl_machinfo,
      },
      .id         = -1,
};


/*
 * Corgi Keyboard Device
 */
static struct platform_device corgikbd_device = {
      .name       = "corgi-keyboard",
      .id         = -1,
};


/*
 * Corgi LEDs
 */
static struct platform_device corgiled_device = {
      .name       = "corgi-led",
      .id         = -1,
};

/*
 * Corgi Touch Screen Device
 */
static struct resource corgits_resources[] = {
      [0] = {
            .start            = CORGI_IRQ_GPIO_TP_INT,
            .end        = CORGI_IRQ_GPIO_TP_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct corgits_machinfo  corgi_ts_machinfo = {
      .get_hsync_len   = corgi_get_hsync_len,
      .put_hsync       = corgi_put_hsync,
      .wait_hsync      = corgi_wait_hsync,
};

static struct platform_device corgits_device = {
      .name       = "corgi-ts",
      .dev        = {
            .parent = &corgissp_device.dev,
            .platform_data    = &corgi_ts_machinfo,
      },
      .id         = -1,
      .num_resources    = ARRAY_SIZE(corgits_resources),
      .resource   = corgits_resources,
};


/*
 * MMC/SD Device
 *
 * The card detect interrupt isn't debounced so we delay it by 250ms
 * to give the card a chance to fully insert/eject.
 */
static struct pxamci_platform_data corgi_mci_platform_data;

static int corgi_mci_init(struct device *dev, irqreturn_t (*corgi_detect_int)(int, void *, struct pt_regs *), void *data)
{
      int err;

      /* setup GPIO for PXA25x MMC controller   */
      pxa_gpio_mode(GPIO6_MMCCLK_MD);
      pxa_gpio_mode(GPIO8_MMCCS0_MD);
      pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
      pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);

      corgi_mci_platform_data.detect_delay = msecs_to_jiffies(250);

      err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_detect_int,
                    IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                    "MMC card detect", data);
      if (err) {
            printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
            return -1;
      }

      return 0;
}

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

      if (( 1 << vdd) & p_d->ocr_mask)
            GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
      else
            GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
}

static int corgi_mci_get_ro(struct device *dev)
{
      return GPLR(CORGI_GPIO_nSD_WP) & GPIO_bit(CORGI_GPIO_nSD_WP);
}

static void corgi_mci_exit(struct device *dev, void *data)
{
      free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
}

static struct pxamci_platform_data corgi_mci_platform_data = {
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .init             = corgi_mci_init,
      .get_ro           = corgi_mci_get_ro,
      .setpower   = corgi_mci_setpower,
      .exit       = corgi_mci_exit,
};


/*
 * Irda
 */
static void corgi_irda_transceiver_mode(struct device *dev, int mode)
{
      if (mode & IR_OFF)
            GPSR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
      else
            GPCR(CORGI_GPIO_IR_ON) = GPIO_bit(CORGI_GPIO_IR_ON);
}

static struct pxaficp_platform_data corgi_ficp_platform_data = {
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
      .transceiver_mode = corgi_irda_transceiver_mode,
};


/*
 * USB Device Controller
 */
static void corgi_udc_command(int cmd)
{
      switch(cmd) {
      case PXA2XX_UDC_CMD_CONNECT:
            GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
            break;
      case PXA2XX_UDC_CMD_DISCONNECT:
            GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
            break;
      }
}

static struct pxa2xx_udc_mach_info udc_info __initdata = {
      /* no connect GPIO; corgi can't tell connection status */
      .udc_command            = corgi_udc_command,
};


static struct platform_device *devices[] __initdata = {
      &corgiscoop_device,
      &corgissp_device,
      &corgifb_device,
      &corgikbd_device,
      &corgibl_device,
      &corgits_device,
      &corgiled_device,
};

static void corgi_poweroff(void)
{
      RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;

      if (!machine_is_corgi())
            /* Green LED off tells the bootloader to halt */
            reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
      arm_machine_restart('h');
}

static void corgi_restart(char mode)
{
      RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;

      if (!machine_is_corgi())
            /* Green LED on tells the bootloader to reboot */
            set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
      arm_machine_restart('h');
}

static void __init corgi_init(void)
{
      pm_power_off = corgi_poweroff;
      arm_pm_restart = corgi_restart;

      /* setup sleep mode values */
      PWER  = 0x00000002;
      PFER  = 0x00000000;
      PRER  = 0x00000002;
      PGSR0 = 0x0158C000;
      PGSR1 = 0x00FF0080;
      PGSR2 = 0x0001C004;
      /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
      PCFR |= PCFR_OPDE;

      corgi_ssp_set_machinfo(&corgi_ssp_machinfo);

      pxa_gpio_mode(CORGI_GPIO_IR_ON | GPIO_OUT);
      pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
      pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);

      pxa_set_udc_info(&udc_info);
      pxa_set_mci_info(&corgi_mci_platform_data);
      pxa_set_ficp_info(&corgi_ficp_platform_data);

      platform_scoop_config = &corgi_pcmcia_config;

      platform_add_devices(devices, ARRAY_SIZE(devices));
}

static void __init fixup_corgi(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;
      if (machine_is_corgi())
            mi->bank[0].size = (32*1024*1024);
      else
            mi->bank[0].size = (64*1024*1024);
}

#ifdef CONFIG_MACH_CORGI
MACHINE_START(CORGI, "SHARP Corgi")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_corgi,
      .map_io           = pxa_map_io,
      .init_irq   = pxa_init_irq,
      .init_machine     = corgi_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_SHEPHERD
MACHINE_START(SHEPHERD, "SHARP Shepherd")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_corgi,
      .map_io           = pxa_map_io,
      .init_irq   = pxa_init_irq,
      .init_machine     = corgi_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_HUSKY
MACHINE_START(HUSKY, "SHARP Husky")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_corgi,
      .map_io           = pxa_map_io,
      .init_irq   = pxa_init_irq,
      .init_machine     = corgi_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif


Generated by  Doxygen 1.6.0   Back to index