Logo Search packages:      
Sourcecode: linux version File versions  Download package

spitz.c

/*
 * Support for Sharp SL-Cxx00 Series of PDAs
 * Models: SL-C3000 (Spitz), SL-C1000 (Akita) and SL-C3100 (Borzoi)
 *
 * Copyright (c) 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/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <linux/backlight.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/spi/corgi_lcd.h>

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

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

#include <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h>
#include <mach/mfp-pxa27x.h>
#include <mach/pxa27x-udc.h>
#include <mach/reset.h>
#include <mach/i2c.h>
#include <mach/irda.h>
#include <mach/mmc.h>
#include <mach/ohci.h>
#include <mach/udc.h>
#include <mach/pxafb.h>
#include <mach/pxa2xx_spi.h>
#include <mach/spitz.h>
#include <mach/sharpsl.h>

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

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

static unsigned long spitz_pin_config[] __initdata = {
      /* Chip Selects */
      GPIO78_nCS_2,     /* SCOOP #2 */
      GPIO79_nCS_3,     /* NAND */
      GPIO80_nCS_4,     /* SCOOP #1 */

      /* LCD - 16bpp Active TFT */
      GPIO58_LCD_LDD_0,
      GPIO59_LCD_LDD_1,
      GPIO60_LCD_LDD_2,
      GPIO61_LCD_LDD_3,
      GPIO62_LCD_LDD_4,
      GPIO63_LCD_LDD_5,
      GPIO64_LCD_LDD_6,
      GPIO65_LCD_LDD_7,
      GPIO66_LCD_LDD_8,
      GPIO67_LCD_LDD_9,
      GPIO68_LCD_LDD_10,
      GPIO69_LCD_LDD_11,
      GPIO70_LCD_LDD_12,
      GPIO71_LCD_LDD_13,
      GPIO72_LCD_LDD_14,
      GPIO73_LCD_LDD_15,
      GPIO74_LCD_FCLK,
      GPIO75_LCD_LCLK,
      GPIO76_LCD_PCLK,

      /* PC Card */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,
      GPIO104_PSKTSEL,

      /* MMC */
      GPIO32_MMC_CLK,
      GPIO112_MMC_CMD,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,

      /* GPIOs */
      GPIO9_GPIO, /* SPITZ_GPIO_nSD_DETECT */
      GPIO81_GPIO,      /* SPITZ_GPIO_nSD_WP */
      GPIO41_GPIO,      /* SPITZ_GPIO_USB_CONNECT */
      GPIO37_GPIO,      /* SPITZ_GPIO_USB_HOST */
      GPIO35_GPIO,      /* SPITZ_GPIO_USB_DEVICE */
      GPIO22_GPIO,      /* SPITZ_GPIO_HSYNC */
      GPIO94_GPIO,      /* SPITZ_GPIO_CF_CD */
      GPIO105_GPIO,     /* SPITZ_GPIO_CF_IRQ */
      GPIO106_GPIO,     /* SPITZ_GPIO_CF2_IRQ */

      GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
};

/*
 * Spitz SCOOP Device #1
 */
static struct resource spitz_scoop_resources[] = {
      [0] = {
            .start            = 0x10800000,
            .end        = 0x10800fff,
            .flags            = IORESOURCE_MEM,
      },
};

static struct scoop_config spitz_scoop_setup = {
      .io_dir           = SPITZ_SCP_IO_DIR,
      .io_out           = SPITZ_SCP_IO_OUT,
      .suspend_clr      = SPITZ_SCP_SUS_CLR,
      .suspend_set      = SPITZ_SCP_SUS_SET,
      .gpio_base  = SPITZ_SCP_GPIO_BASE,
};

struct platform_device spitzscoop_device = {
      .name       = "sharp-scoop",
      .id         = 0,
      .dev        = {
            .platform_data    = &spitz_scoop_setup,
      },
      .num_resources    = ARRAY_SIZE(spitz_scoop_resources),
      .resource   = spitz_scoop_resources,
};

/*
 * Spitz SCOOP Device #2
 */
static struct resource spitz_scoop2_resources[] = {
      [0] = {
            .start            = 0x08800040,
            .end        = 0x08800fff,
            .flags            = IORESOURCE_MEM,
      },
};

static struct scoop_config spitz_scoop2_setup = {
      .io_dir           = SPITZ_SCP2_IO_DIR,
      .io_out           = SPITZ_SCP2_IO_OUT,
      .suspend_clr      = SPITZ_SCP2_SUS_CLR,
      .suspend_set      = SPITZ_SCP2_SUS_SET,
      .gpio_base  = SPITZ_SCP2_GPIO_BASE,
};

struct platform_device spitzscoop2_device = {
      .name       = "sharp-scoop",
      .id         = 1,
      .dev        = {
            .platform_data    = &spitz_scoop2_setup,
      },
      .num_resources    = ARRAY_SIZE(spitz_scoop2_resources),
      .resource   = spitz_scoop2_resources,
};

#define SPITZ_PWR_SD 0x01
#define SPITZ_PWR_CF 0x02

/* Power control is shared with between one of the CF slots and SD */
static void spitz_card_pwr_ctrl(int device, unsigned short new_cpr)
{
      unsigned short cpr = read_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR);

      if (new_cpr & 0x0007) {
            gpio_set_value(SPITZ_GPIO_CF_POWER, 1);
            if (!(cpr & 0x0002) && !(cpr & 0x0004))
                    mdelay(5);
            if (device == SPITZ_PWR_CF)
                    cpr |= 0x0002;
            if (device == SPITZ_PWR_SD)
                    cpr |= 0x0004;
              write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
      } else {
            if (device == SPITZ_PWR_CF)
                    cpr &= ~0x0002;
            if (device == SPITZ_PWR_SD)
                    cpr &= ~0x0004;
            if (!(cpr & 0x0002) && !(cpr & 0x0004)) {
                  write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, 0x0000);
                    mdelay(1);
                  gpio_set_value(SPITZ_GPIO_CF_POWER, 0);
            } else {
                    write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
            }
      }
}

static void spitz_pcmcia_pwr(struct device *scoop, unsigned short cpr, int nr)
{
      /* Only need to override behaviour for slot 0 */
      if (nr == 0)
            spitz_card_pwr_ctrl(SPITZ_PWR_CF, cpr);
      else
            write_scoop_reg(scoop, SCOOP_CPR, cpr);
}

static struct scoop_pcmcia_dev spitz_pcmcia_scoop[] = {
{
      .dev        = &spitzscoop_device.dev,
      .irq        = SPITZ_IRQ_GPIO_CF_IRQ,
      .cd_irq     = SPITZ_IRQ_GPIO_CF_CD,
      .cd_irq_str = "PCMCIA0 CD",
},{
      .dev        = &spitzscoop2_device.dev,
      .irq        = SPITZ_IRQ_GPIO_CF2_IRQ,
      .cd_irq     = -1,
},
};

static struct scoop_pcmcia_config spitz_pcmcia_config = {
      .devs         = &spitz_pcmcia_scoop[0],
      .num_devs     = 2,
      .power_ctrl   = spitz_pcmcia_pwr,
};

EXPORT_SYMBOL(spitzscoop_device);
EXPORT_SYMBOL(spitzscoop2_device);

/*
 * Spitz Keyboard Device
 */
static struct platform_device spitzkbd_device = {
      .name       = "spitz-keyboard",
      .id         = -1,
};


/*
 * Spitz LEDs
 */
static struct gpio_led spitz_gpio_leds[] = {
      {
            .name             = "spitz:amber:charge",
            .default_trigger  = "sharpsl-charge",
            .gpio             = SPITZ_GPIO_LED_ORANGE,
      },
      {
            .name             = "spitz:green:hddactivity",
            .default_trigger  = "ide-disk",
            .gpio             = SPITZ_GPIO_LED_GREEN,
      },
};

static struct gpio_led_platform_data spitz_gpio_leds_info = {
      .leds       = spitz_gpio_leds,
      .num_leds   = ARRAY_SIZE(spitz_gpio_leds),
};

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

#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
static struct pxa2xx_spi_master spitz_spi_info = {
      .num_chipselect   = 3,
};

static struct ads7846_platform_data spitz_ads7846_info = {
      .model                  = 7846,
      .vref_delay_usecs = 100,
      .x_plate_ohms           = 419,
      .y_plate_ohms           = 486,
      .gpio_pendown           = SPITZ_GPIO_TP_INT,
};

static void spitz_ads7846_cs(u32 command)
{
      gpio_set_value(SPITZ_GPIO_ADS7846_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip spitz_ads7846_chip = {
      .cs_control       = spitz_ads7846_cs,
};

static void spitz_bl_kick_battery(void)
{
      void (*kick_batt)(void);

      kick_batt = symbol_get(sharpsl_battery_kick);
      if (kick_batt) {
            kick_batt();
            symbol_put(sharpsl_battery_kick);
      }
}

static struct corgi_lcd_platform_data spitz_lcdcon_info = {
      .init_mode        = CORGI_LCD_MODE_VGA,
      .max_intensity          = 0x2f,
      .default_intensity      = 0x1f,
      .limit_mask       = 0x0b,
      .gpio_backlight_cont    = SPITZ_GPIO_BACKLIGHT_CONT,
      .gpio_backlight_on      = SPITZ_GPIO_BACKLIGHT_ON,
      .kick_battery           = spitz_bl_kick_battery,
};

static void spitz_lcdcon_cs(u32 command)
{
      gpio_set_value(SPITZ_GPIO_LCDCON_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip spitz_lcdcon_chip = {
      .cs_control = spitz_lcdcon_cs,
};

static void spitz_max1111_cs(u32 command)
{
      gpio_set_value(SPITZ_GPIO_MAX1111_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip spitz_max1111_chip = {
      .cs_control = spitz_max1111_cs,
};

static struct spi_board_info spitz_spi_devices[] = {
      {
            .modalias   = "ads7846",
            .max_speed_hz     = 1200000,
            .bus_num    = 2,
            .chip_select      = 0,
            .platform_data    = &spitz_ads7846_info,
            .controller_data= &spitz_ads7846_chip,
            .irq        = gpio_to_irq(SPITZ_GPIO_TP_INT),
      }, {
            .modalias   = "corgi-lcd",
            .max_speed_hz     = 50000,
            .bus_num    = 2,
            .chip_select      = 1,
            .platform_data    = &spitz_lcdcon_info,
            .controller_data= &spitz_lcdcon_chip,
      }, {
            .modalias   = "max1111",
            .max_speed_hz     = 450000,
            .bus_num    = 2,
            .chip_select      = 2,
            .controller_data= &spitz_max1111_chip,
      },
};

static void __init spitz_init_spi(void)
{
      int err;

      err = gpio_request(SPITZ_GPIO_ADS7846_CS, "ADS7846_CS");
      if (err)
            return;

      err = gpio_request(SPITZ_GPIO_LCDCON_CS, "LCDCON_CS");
      if (err)
            goto err_free_1;

      err = gpio_request(SPITZ_GPIO_MAX1111_CS, "MAX1111_CS");
      if (err)
            goto err_free_2;

      err = gpio_direction_output(SPITZ_GPIO_ADS7846_CS, 1);
      if (err)
            goto err_free_3;
      err = gpio_direction_output(SPITZ_GPIO_LCDCON_CS, 1);
      if (err)
            goto err_free_3;
      err = gpio_direction_output(SPITZ_GPIO_MAX1111_CS, 1);
      if (err)
            goto err_free_3;

      if (machine_is_akita()) {
            spitz_lcdcon_info.gpio_backlight_cont = AKITA_GPIO_BACKLIGHT_CONT;
            spitz_lcdcon_info.gpio_backlight_on = AKITA_GPIO_BACKLIGHT_ON;
      }

      pxa2xx_set_spi_info(2, &spitz_spi_info);
      spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));
      return;

err_free_3:
      gpio_free(SPITZ_GPIO_MAX1111_CS);
err_free_2:
      gpio_free(SPITZ_GPIO_LCDCON_CS);
err_free_1:
      gpio_free(SPITZ_GPIO_ADS7846_CS);
}
#else
static inline void spitz_init_spi(void) {}
#endif

/*
 * 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 spitz_mci_platform_data;

static int spitz_mci_init(struct device *dev, irq_handler_t spitz_detect_int, void *data)
{
      int err;

      err = gpio_request(SPITZ_GPIO_nSD_DETECT, "nSD_DETECT");
      if (err)
            goto err_out;

      err = gpio_request(SPITZ_GPIO_nSD_WP, "nSD_WP");
      if (err)
            goto err_free_1;

      gpio_direction_input(SPITZ_GPIO_nSD_DETECT);
      gpio_direction_input(SPITZ_GPIO_nSD_WP);

      spitz_mci_platform_data.detect_delay = msecs_to_jiffies(250);

      err = request_irq(SPITZ_IRQ_GPIO_nSD_DETECT, spitz_detect_int,
                    IRQF_DISABLED | IRQF_TRIGGER_RISING |
                    IRQF_TRIGGER_FALLING,
                    "MMC card detect", data);
      if (err) {
            pr_err("%s: MMC/SD: can't request MMC card detect IRQ\n",
                        __func__);
            goto err_free_2;
      }
      return 0;

err_free_2:
      gpio_free(SPITZ_GPIO_nSD_WP);
err_free_1:
      gpio_free(SPITZ_GPIO_nSD_DETECT);
err_out:
      return err;
}

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

      if (( 1 << vdd) & p_d->ocr_mask)
            spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0004);
      else
            spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0000);
}

static int spitz_mci_get_ro(struct device *dev)
{
      return gpio_get_value(SPITZ_GPIO_nSD_WP);
}

static void spitz_mci_exit(struct device *dev, void *data)
{
      free_irq(SPITZ_IRQ_GPIO_nSD_DETECT, data);
      gpio_free(SPITZ_GPIO_nSD_WP);
      gpio_free(SPITZ_GPIO_nSD_DETECT);
}

static struct pxamci_platform_data spitz_mci_platform_data = {
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .init             = spitz_mci_init,
      .get_ro           = spitz_mci_get_ro,
      .setpower   = spitz_mci_setpower,
      .exit       = spitz_mci_exit,
};


/*
 * USB Host (OHCI)
 */
static int spitz_ohci_init(struct device *dev)
{
      int err;

      err = gpio_request(SPITZ_GPIO_USB_HOST, "USB_HOST");
      if (err)
            return err;

      /* Only Port 2 is connected
       * Setup USB Port 2 Output Control Register
       */
      UP2OCR = UP2OCR_HXS | UP2OCR_HXOE | UP2OCR_DPPDE | UP2OCR_DMPDE;

      return gpio_direction_output(SPITZ_GPIO_USB_HOST, 1);
}

static struct pxaohci_platform_data spitz_ohci_platform_data = {
      .port_mode  = PMM_NPS_MODE,
      .init       = spitz_ohci_init,
      .flags            = ENABLE_PORT_ALL | NO_OC_PROTECTION,
      .power_budget     = 150,
};


/*
 * Irda
 */
static int spitz_irda_startup(struct device *dev)
{
      int rc;

      rc = gpio_request(SPITZ_GPIO_IR_ON, "IrDA on");
      if (rc)
            goto err;

      rc = gpio_direction_output(SPITZ_GPIO_IR_ON, 1);
      if (rc)
            goto err_dir;

      return 0;

err_dir:
      gpio_free(SPITZ_GPIO_IR_ON);
err:
      return rc;
}

static void spitz_irda_shutdown(struct device *dev)
{
      gpio_free(SPITZ_GPIO_IR_ON);
}

static void spitz_irda_transceiver_mode(struct device *dev, int mode)
{
      gpio_set_value(SPITZ_GPIO_IR_ON, mode & IR_OFF);
      pxa2xx_transceiver_mode(dev, mode);
}

#ifdef CONFIG_MACH_AKITA
static void akita_irda_transceiver_mode(struct device *dev, int mode)
{
      gpio_set_value(AKITA_GPIO_IR_ON, mode & IR_OFF);
      pxa2xx_transceiver_mode(dev, mode);
}
#endif

static struct pxaficp_platform_data spitz_ficp_platform_data = {
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
      .transceiver_mode = spitz_irda_transceiver_mode,
      .startup          = spitz_irda_startup,
      .shutdown         = spitz_irda_shutdown,
};


/*
 * Spitz PXA Framebuffer
 */

static struct pxafb_mode_info spitz_pxafb_modes[] = {
{
      .pixclock       = 19231,
      .xres           = 480,
      .yres           = 640,
      .bpp            = 16,
      .hsync_len      = 40,
      .left_margin    = 46,
      .right_margin   = 125,
      .vsync_len      = 3,
      .upper_margin   = 1,
      .lower_margin   = 0,
      .sync           = 0,
},{
      .pixclock       = 134617,
      .xres           = 240,
      .yres           = 320,
      .bpp            = 16,
      .hsync_len      = 20,
      .left_margin    = 20,
      .right_margin   = 46,
      .vsync_len      = 2,
      .upper_margin   = 1,
      .lower_margin   = 0,
      .sync           = 0,
},
};

static struct pxafb_mach_info spitz_pxafb_info = {
      .modes          = &spitz_pxafb_modes[0],
      .num_modes      = 2,
      .fixed_modes    = 1,
      .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_ALTERNATE_MAPPING,
};


static struct platform_device *devices[] __initdata = {
      &spitzscoop_device,
      &spitzkbd_device,
      &spitzled_device,
};

static void spitz_poweroff(void)
{
      arm_machine_restart('g');
}

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

      spitz_poweroff();
}

static void __init common_init(void)
{
      init_gpio_reset(SPITZ_GPIO_ON_RESET, 1);
      pm_power_off = spitz_poweroff;
      arm_pm_restart = spitz_restart;

      PMCR = 0x00;

      /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
      PCFR |= PCFR_OPDE;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(spitz_pin_config));

      spitz_init_spi();

      platform_add_devices(devices, ARRAY_SIZE(devices));
      pxa_set_mci_info(&spitz_mci_platform_data);
      pxa_set_ohci_info(&spitz_ohci_platform_data);
      pxa_set_ficp_info(&spitz_ficp_platform_data);
      set_pxa_fb_info(&spitz_pxafb_info);
      pxa_set_i2c_info(NULL);
}

#if defined(CONFIG_MACH_SPITZ) || defined(CONFIG_MACH_BORZOI)
static void __init spitz_init(void)
{
      platform_scoop_config = &spitz_pcmcia_config;

      common_init();

      platform_device_register(&spitzscoop2_device);
}
#endif

#ifdef CONFIG_MACH_AKITA
/*
 * Akita IO Expander
 */
static struct pca953x_platform_data akita_ioexp = {
      .gpio_base        = AKITA_IOEXP_GPIO_BASE,
};

static struct i2c_board_info akita_i2c_board_info[] = {
      {
            .type       = "max7310",
            .addr       = 0x18,
            .platform_data    = &akita_ioexp,
      },
};

static void __init akita_init(void)
{
      spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;

      /* We just pretend the second element of the array doesn't exist */
      spitz_pcmcia_config.num_devs = 1;
      platform_scoop_config = &spitz_pcmcia_config;

      i2c_register_board_info(0, ARRAY_AND_SIZE(akita_i2c_board_info));

      common_init();
}
#endif

static void __init fixup_spitz(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);
}

#ifdef CONFIG_MACH_SPITZ
MACHINE_START(SPITZ, "SHARP Spitz")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_spitz,
      .map_io           = pxa_map_io,
      .init_irq   = pxa27x_init_irq,
      .init_machine     = spitz_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_BORZOI
MACHINE_START(BORZOI, "SHARP Borzoi")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_spitz,
      .map_io           = pxa_map_io,
      .init_irq   = pxa27x_init_irq,
      .init_machine     = spitz_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif

#ifdef CONFIG_MACH_AKITA
MACHINE_START(AKITA, "SHARP Akita")
      .phys_io    = 0x40000000,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .fixup            = fixup_spitz,
      .map_io           = pxa_map_io,
      .init_irq   = pxa27x_init_irq,
      .init_machine     = akita_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif

Generated by  Doxygen 1.6.0   Back to index