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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/mmc/host.h>
#include <linux/pm.h>
#include <linux/backlight.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/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 <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h>
#include <mach/pxa2xx-gpio.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/akita.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"

/*
 * 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,
};

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,
};

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) {
              set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
            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);
                    reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER);
            } else {
                    write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr);
            }
      }
}

static void spitz_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(GPIO54_nPCE_2);
      GPSR(GPIO85_nPCE_1) = GPIO_bit(GPIO85_nPCE_1);

      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(GPIO85_nPCE_1_MD);
      pxa_gpio_mode(GPIO54_nPCE_2_MD);
      pxa_gpio_mode(GPIO104_pSKTSEL_MD);
}

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,
      .pcmcia_init  = spitz_pcmcia_init,
      .power_ctrl   = spitz_pcmcia_pwr,
};

EXPORT_SYMBOL(spitzscoop_device);
EXPORT_SYMBOL(spitzscoop2_device);


/*
 * Spitz 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 spitzssp_device = {
      .name       = "corgi-ssp",
      .dev        = {
            .parent = &spitzscoop_device.dev,
      },
      .id         = -1,
};

struct corgissp_machinfo spitz_ssp_machinfo = {
      .port       = 2,
      .cs_lcdcon  = SPITZ_GPIO_LCDCON_CS,
      .cs_ads7846 = SPITZ_GPIO_ADS7846_CS,
      .cs_max1111 = SPITZ_GPIO_MAX1111_CS,
      .clk_lcdcon = 520,
      .clk_ads7846      = 14,
      .clk_max1111      = 56,
};


/*
 * Spitz Backlight Device
 */
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 generic_bl_info spitz_bl_machinfo = {
      .name = "corgi-bl",
      .default_intensity = 0x1f,
      .limit_mask = 0x0b,
      .max_intensity = 0x2f,
      .kick_battery = spitz_bl_kick_battery,
};

static struct platform_device spitzbl_device = {
      .name       = "generic-bl",
      .dev        = {
            .platform_data    = &spitz_bl_machinfo,
      },
      .id         = -1,
};


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


/*
 * Spitz LEDs
 */
static struct platform_device spitzled_device = {
      .name       = "spitz-led",
      .id         = -1,
};

/*
 * Spitz Touch Screen Device
 */

static unsigned long (*get_hsync_invperiod)(struct device *dev);

static void inline sharpsl_wait_sync(int gpio)
{
      while((GPLR(gpio) & GPIO_bit(gpio)) == 0);
      while((GPLR(gpio) & GPIO_bit(gpio)) != 0);
}

static struct device *spitz_pxafb_dev;

static int is_pxafb_device(struct device * dev, void * data)
{
      struct platform_device *pdev = container_of(dev, struct platform_device, dev);

      return (strncmp(pdev->name, "pxa2xx-fb", 9) == 0);
}

static unsigned long spitz_get_hsync_invperiod(void)
{
#ifdef CONFIG_FB_PXA
      if (!spitz_pxafb_dev) {
            spitz_pxafb_dev = bus_find_device(&platform_bus_type, NULL, NULL, is_pxafb_device);
            if (!spitz_pxafb_dev)
                  return 0;
      }
      if (!get_hsync_invperiod)
            get_hsync_invperiod = symbol_get(pxafb_get_hsync_time);
      if (!get_hsync_invperiod)
#endif
            return 0;

      return get_hsync_invperiod(spitz_pxafb_dev);
}

static void spitz_put_hsync(void)
{
      put_device(spitz_pxafb_dev);
      if (get_hsync_invperiod)
            symbol_put(pxafb_get_hsync_time);
      spitz_pxafb_dev = NULL;
      get_hsync_invperiod = NULL;
}

static void spitz_wait_hsync(void)
{
      sharpsl_wait_sync(SPITZ_GPIO_HSYNC);
}

static struct resource spitzts_resources[] = {
      [0] = {
            .start            = SPITZ_IRQ_GPIO_TP_INT,
            .end        = SPITZ_IRQ_GPIO_TP_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct corgits_machinfo  spitz_ts_machinfo = {
      .get_hsync_invperiod = spitz_get_hsync_invperiod,
      .put_hsync           = spitz_put_hsync,
      .wait_hsync          = spitz_wait_hsync,
};

static struct platform_device spitzts_device = {
      .name       = "corgi-ts",
      .dev        = {
            .parent = &spitzssp_device.dev,
            .platform_data    = &spitz_ts_machinfo,
      },
      .id         = -1,
      .num_resources    = ARRAY_SIZE(spitzts_resources),
      .resource   = spitzts_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 spitz_mci_platform_data;

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

      /* setup GPIO for PXA27x MMC controller   */
      pxa_gpio_mode(GPIO32_MMCCLK_MD);
      pxa_gpio_mode(GPIO112_MMCCMD_MD);
      pxa_gpio_mode(GPIO92_MMCDAT0_MD);
      pxa_gpio_mode(GPIO109_MMCDAT1_MD);
      pxa_gpio_mode(GPIO110_MMCDAT2_MD);
      pxa_gpio_mode(GPIO111_MMCDAT3_MD);
      pxa_gpio_mode(SPITZ_GPIO_nSD_DETECT | GPIO_IN);
      pxa_gpio_mode(SPITZ_GPIO_nSD_WP | GPIO_IN);

      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)
            printk(KERN_ERR "spitz_mci_init: MMC/SD: can't request MMC card detect IRQ\n");

      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 GPLR(SPITZ_GPIO_nSD_WP) & GPIO_bit(SPITZ_GPIO_nSD_WP);
}

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

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)
{
      /* Only Port 2 is connected */
      pxa_gpio_mode(SPITZ_GPIO_USB_CONNECT | GPIO_IN);
      pxa_gpio_mode(SPITZ_GPIO_USB_HOST | GPIO_OUT);
      pxa_gpio_mode(SPITZ_GPIO_USB_DEVICE | GPIO_IN);

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

      GPSR(SPITZ_GPIO_USB_HOST) = GPIO_bit(SPITZ_GPIO_USB_HOST);

      UHCHR = (UHCHR) &
            ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);

      UHCRHDA |= UHCRHDA_NOCP;

      return 0;
}

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


/*
 * Irda
 */
static void spitz_irda_transceiver_mode(struct device *dev, int mode)
{
      if (mode & IR_OFF)
            set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
      else
            reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_IR_ON);
      pxa2xx_transceiver_mode(dev, mode);
}

#ifdef CONFIG_MACH_AKITA
static void akita_irda_transceiver_mode(struct device *dev, int mode)
{
      if (mode & IR_OFF)
            akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
      else
            akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
      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,
};


/*
 * Spitz PXA Framebuffer
 */

static void spitz_lcd_power(int on, struct fb_var_screeninfo *var)
{
      if (on)
            corgi_lcdtg_hw_init(var->xres);
      else
            corgi_lcdtg_suspend();
}

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,
      .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_LDDALT | LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM,
      .lccr3          = LCCR3_PixRsEdg | LCCR3_OutEnH,
      .pxafb_lcd_power = spitz_lcd_power,
};


static struct platform_device *devices[] __initdata = {
      &spitzscoop_device,
      &spitzssp_device,
      &spitzkbd_device,
      &spitzts_device,
      &spitzbl_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);
      pm_power_off = spitz_poweroff;
      arm_pm_restart = spitz_restart;

      PMCR = 0x00;

      /* 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(&spitz_ssp_machinfo);

      pxa_gpio_mode(SPITZ_GPIO_HSYNC | GPIO_IN);

      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_parent(&spitzssp_device.dev);
      set_pxa_fb_info(&spitz_pxafb_info);
      pxa_set_i2c_info(NULL);
}

#if defined(CONFIG_MACH_SPITZ) || defined(CONFIG_MACH_BORZOI)
static void spitz_bl_set_intensity(int intensity)
{
      if (intensity > 0x10)
            intensity += 0x10;

      /* Bits 0-4 are accessed via the SSP interface */
      corgi_ssp_blduty_set(intensity & 0x1f);

      /* Bit 5 is via SCOOP */
      if (intensity & 0x0020)
            reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_CONT);
      else
            set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_CONT);

      if (intensity)
            set_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_ON);
      else
            reset_scoop_gpio(&spitzscoop2_device.dev, SPITZ_SCP2_BACKLIGHT_ON);
}

static void __init spitz_init(void)
{
      platform_scoop_config = &spitz_pcmcia_config;

      spitz_bl_machinfo.set_bl_intensity = spitz_bl_set_intensity;

      common_init();

      platform_device_register(&spitzscoop2_device);
}
#endif

#ifdef CONFIG_MACH_AKITA
/*
 * Akita IO Expander
 */
struct platform_device akitaioexp_device = {
      .name       = "akita-ioexp",
      .id         = -1,
};

EXPORT_SYMBOL_GPL(akitaioexp_device);

static void akita_bl_set_intensity(int intensity)
{
      if (intensity > 0x10)
            intensity += 0x10;

      /* Bits 0-4 are accessed via the SSP interface */
      corgi_ssp_blduty_set(intensity & 0x1f);

      /* Bit 5 is via IO-Expander */
      if (intensity & 0x0020)
            akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
      else
            akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);

      if (intensity)
            akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
      else
            akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
}

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;
      spitz_bl_machinfo.set_bl_intensity = akita_bl_set_intensity;

      platform_device_register(&akitaioexp_device);

      spitzscoop_device.dev.parent = &akitaioexp_device.dev;
      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

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