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mach-h1940.c

/* linux/arch/arm/mach-s3c2410/mach-h1940.c
 *
 * Copyright (c) 2003-2005 Simtec Electronics
 *   Ben Dooks <ben@simtec.co.uk>
 *
 * http://www.handhelds.org/projects/h1940.html
 *
 * 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/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/memblock.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/sysdev.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/pwm_backlight.h>
#include <linux/i2c.h>
#include <video/platform_lcd.h>

#include <linux/mmc/host.h>

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

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

#include <plat/regs-serial.h>
#include <mach/regs-lcd.h>
#include <mach/regs-clock.h>

#include <mach/regs-gpio.h>
#include <mach/gpio-fns.h>
#include <mach/gpio-nrs.h>

#include <mach/h1940.h>
#include <mach/h1940-latch.h>
#include <mach/fb.h>
#include <plat/udc.h>
#include <plat/iic.h>

#include <plat/gpio-cfg.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/pm.h>
#include <plat/mci.h>
#include <plat/ts.h>

#include <sound/uda1380.h>

#define H1940_LATCH           ((void __force __iomem *)0xF8000000)

#define H1940_PA_LATCH        S3C2410_CS2

#define H1940_LATCH_BIT(x)    (1 << ((x) + 16 - S3C_GPIO_END))

static struct map_desc h1940_iodesc[] __initdata = {
      [0] = {
            .virtual    = (unsigned long)H1940_LATCH,
            .pfn        = __phys_to_pfn(H1940_PA_LATCH),
            .length           = SZ_16K,
            .type       = MT_DEVICE
      },
};

#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE

static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
      [0] = {
            .hwport          = 0,
            .flags           = 0,
            .ucon      = 0x3c5,
            .ulcon           = 0x03,
            .ufcon           = 0x51,
      },
      [1] = {
            .hwport          = 1,
            .flags           = 0,
            .ucon      = 0x245,
            .ulcon           = 0x03,
            .ufcon           = 0x00,
      },
      /* IR port */
      [2] = {
            .hwport          = 2,
            .flags           = 0,
            .uart_flags  = UPF_CONS_FLOW,
            .ucon      = 0x3c5,
            .ulcon           = 0x43,
            .ufcon           = 0x51,
      }
};

/* Board control latch control */

static unsigned int latch_state;

static void h1940_latch_control(unsigned int clear, unsigned int set)
{
      unsigned long flags;

      local_irq_save(flags);

      latch_state &= ~clear;
      latch_state |= set;

      __raw_writel(latch_state, H1940_LATCH);

      local_irq_restore(flags);
}

static inline int h1940_gpiolib_to_latch(int offset)
{
      return 1 << (offset + 16);
}

static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
                              unsigned offset, int value)
{
      int latch_bit = h1940_gpiolib_to_latch(offset);

      h1940_latch_control(value ? 0 : latch_bit,
            value ? latch_bit : 0);
}

static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
                              unsigned offset, int value)
{
      h1940_gpiolib_latch_set(chip, offset, value);
      return 0;
}

static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
                              unsigned offset)
{
      return (latch_state >> (offset + 16)) & 1;
}

struct gpio_chip h1940_latch_gpiochip = {
      .base             = H1940_LATCH_GPIO(0),
      .owner                  = THIS_MODULE,
      .label                  = "H1940_LATCH",
      .ngpio                  = 16,
      .direction_output = h1940_gpiolib_latch_output,
      .set              = h1940_gpiolib_latch_set,
      .get              = h1940_gpiolib_latch_get,
};

static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
{
      printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);

      switch (cmd)
      {
            case S3C2410_UDC_P_ENABLE :
                  gpio_set_value(H1940_LATCH_USB_DP, 1);
                  break;
            case S3C2410_UDC_P_DISABLE :
                  gpio_set_value(H1940_LATCH_USB_DP, 0);
                  break;
            case S3C2410_UDC_P_RESET :
                  break;
            default:
                  break;
      }
}

static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
      .udc_command            = h1940_udc_pullup,
      .vbus_pin         = S3C2410_GPG(5),
      .vbus_pin_inverted      = 1,
};

static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
            .delay = 10000,
            .presc = 49,
            .oversampling_shift = 2,
            .cfg_gpio = s3c24xx_ts_cfg_gpio,
};

/**
 * Set lcd on or off
 **/
static struct s3c2410fb_display h1940_lcd __initdata = {
      .lcdcon5=   S3C2410_LCDCON5_FRM565 | \
                  S3C2410_LCDCON5_INVVLINE | \
                  S3C2410_LCDCON5_HWSWP,

      .type =           S3C2410_LCDCON1_TFT,
      .width =    240,
      .height =   320,
      .pixclock = 260000,
      .xres =           240,
      .yres =           320,
      .bpp =            16,
      .left_margin =    8,
      .right_margin =   20,
      .hsync_len =      4,
      .upper_margin =   8,
      .lower_margin = 7,
      .vsync_len =      1,
};

static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
      .displays = &h1940_lcd,
      .num_displays = 1,
      .default_display = 0,

      .lpcsel=    0x02,
      .gpccon=    0xaa940659,
      .gpccon_mask=     0xffffffff,
      .gpcup=           0x0000ffff,
      .gpcup_mask=      0xffffffff,
      .gpdcon=    0xaa84aaa0,
      .gpdcon_mask=     0xffffffff,
      .gpdup=           0x0000faff,
      .gpdup_mask=      0xffffffff,
};

static struct platform_device h1940_device_leds = {
      .name             = "h1940-leds",
      .id               = -1,
};

static struct platform_device h1940_device_bluetooth = {
      .name             = "h1940-bt",
      .id               = -1,
};

static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
{
      switch (power_mode) {
      case MMC_POWER_OFF:
            gpio_set_value(H1940_LATCH_SD_POWER, 0);
            break;
      case MMC_POWER_UP:
      case MMC_POWER_ON:
            gpio_set_value(H1940_LATCH_SD_POWER, 1);
            break;
      default:
            break;
      };
}

static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
      .gpio_detect   = S3C2410_GPF(5),
      .gpio_wprotect = S3C2410_GPH(8),
      .set_power     = h1940_set_mmc_power,
      .ocr_avail     = MMC_VDD_32_33,
};

static int h1940_backlight_init(struct device *dev)
{
      gpio_request(S3C2410_GPB(0), "Backlight");

      gpio_direction_output(S3C2410_GPB(0), 0);
      s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
      s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
      gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);

      return 0;
}

static int h1940_backlight_notify(struct device *dev, int brightness)
{
      if (!brightness) {
            gpio_direction_output(S3C2410_GPB(0), 1);
            gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
      } else {
            gpio_direction_output(S3C2410_GPB(0), 0);
            s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
            s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
            gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
      }
      return brightness;
}

static void h1940_backlight_exit(struct device *dev)
{
      gpio_direction_output(S3C2410_GPB(0), 1);
      gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
}


static struct platform_pwm_backlight_data backlight_data = {
      .pwm_id         = 0,
      .max_brightness = 100,
      .dft_brightness = 50,
      /* tcnt = 0x31 */
      .pwm_period_ns  = 36296,
      .init           = h1940_backlight_init,
      .notify           = h1940_backlight_notify,
      .exit           = h1940_backlight_exit,
};

static struct platform_device h1940_backlight = {
      .name = "pwm-backlight",
      .dev  = {
            .parent = &s3c_device_timer[0].dev,
            .platform_data = &backlight_data,
      },
      .id   = -1,
};

static void h1940_lcd_power_set(struct plat_lcd_data *pd,
                              unsigned int power)
{
      int value;

      if (!power) {
            gpio_set_value(S3C2410_GPC(0), 0);
            /* wait for 3ac */
            do {
                  value = gpio_get_value(S3C2410_GPC(6));
            } while (value);

            gpio_set_value(H1940_LATCH_LCD_P2, 0);
            gpio_set_value(H1940_LATCH_LCD_P3, 0);
            gpio_set_value(H1940_LATCH_LCD_P4, 0);

            gpio_direction_output(S3C2410_GPC(1), 0);
            gpio_direction_output(S3C2410_GPC(4), 0);

            gpio_set_value(H1940_LATCH_LCD_P1, 0);
            gpio_set_value(H1940_LATCH_LCD_P0, 0);

            gpio_set_value(S3C2410_GPC(5), 0);

      } else {
            gpio_set_value(H1940_LATCH_LCD_P0, 1);
            gpio_set_value(H1940_LATCH_LCD_P1, 1);

            s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
            s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));

            gpio_set_value(S3C2410_GPC(5), 1);
            gpio_set_value(S3C2410_GPC(0), 1);

            gpio_set_value(H1940_LATCH_LCD_P3, 1);
            gpio_set_value(H1940_LATCH_LCD_P2, 1);
            gpio_set_value(H1940_LATCH_LCD_P4, 1);
      }
}

static struct plat_lcd_data h1940_lcd_power_data = {
      .set_power      = h1940_lcd_power_set,
};

static struct platform_device h1940_lcd_powerdev = {
      .name                   = "platform-lcd",
      .dev.parent             = &s3c_device_lcd.dev,
      .dev.platform_data      = &h1940_lcd_power_data,
};

static struct uda1380_platform_data uda1380_info = {
      .gpio_power = H1940_LATCH_UDA_POWER,
      .gpio_reset = S3C2410_GPA(12),
      .dac_clk    = UDA1380_DAC_CLK_SYSCLK,
};

static struct i2c_board_info h1940_i2c_devices[] = {
      {
            I2C_BOARD_INFO("uda1380", 0x1a),
            .platform_data = &uda1380_info,
      },
};

static struct platform_device *h1940_devices[] __initdata = {
      &s3c_device_ohci,
      &s3c_device_lcd,
      &s3c_device_wdt,
      &s3c_device_i2c0,
      &s3c_device_iis,
      &samsung_asoc_dma,
      &s3c_device_usbgadget,
      &h1940_device_leds,
      &h1940_device_bluetooth,
      &s3c_device_sdi,
      &s3c_device_rtc,
      &s3c_device_timer[0],
      &h1940_backlight,
      &h1940_lcd_powerdev,
      &s3c_device_adc,
      &s3c_device_ts,
};

static void __init h1940_map_io(void)
{
      s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
      s3c24xx_init_clocks(0);
      s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));

      /* setup PM */

#ifdef CONFIG_PM_H1940
      memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
#endif
      s3c_pm_init();

      /* Add latch gpio chip, set latch initial value */
      h1940_latch_control(0, 0);
      WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
}

/* H1940 and RX3715 need to reserve this for suspend */
static void __init h1940_reserve(void)
{
      memblock_reserve(0x30003000, 0x1000);
      memblock_reserve(0x30081000, 0x1000);
}

static void __init h1940_init_irq(void)
{
      s3c24xx_init_irq();
}

static void __init h1940_init(void)
{
      u32 tmp;

      s3c24xx_fb_set_platdata(&h1940_fb_info);
      s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
      s3c24xx_udc_set_platdata(&h1940_udc_cfg);
      s3c24xx_ts_set_platdata(&h1940_ts_cfg);
      s3c_i2c0_set_platdata(NULL);

      /* Turn off suspend on both USB ports, and switch the
       * selectable USB port to USB device mode. */

      s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
                        S3C2410_MISCCR_USBSUSPND0 |
                        S3C2410_MISCCR_USBSUSPND1, 0x0);

      tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
            | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
            | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
      writel(tmp, S3C2410_UPLLCON);

      gpio_request(S3C2410_GPC(0), "LCD power");
      gpio_request(S3C2410_GPC(1), "LCD power");
      gpio_request(S3C2410_GPC(4), "LCD power");
      gpio_request(S3C2410_GPC(5), "LCD power");
      gpio_request(S3C2410_GPC(6), "LCD power");
      gpio_request(H1940_LATCH_LCD_P0, "LCD power");
      gpio_request(H1940_LATCH_LCD_P1, "LCD power");
      gpio_request(H1940_LATCH_LCD_P2, "LCD power");
      gpio_request(H1940_LATCH_LCD_P3, "LCD power");
      gpio_request(H1940_LATCH_LCD_P4, "LCD power");
      gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
      gpio_direction_output(S3C2410_GPC(0), 0);
      gpio_direction_output(S3C2410_GPC(1), 0);
      gpio_direction_output(S3C2410_GPC(4), 0);
      gpio_direction_output(S3C2410_GPC(5), 0);
      gpio_direction_input(S3C2410_GPC(6));
      gpio_direction_output(H1940_LATCH_LCD_P0, 0);
      gpio_direction_output(H1940_LATCH_LCD_P1, 0);
      gpio_direction_output(H1940_LATCH_LCD_P2, 0);
      gpio_direction_output(H1940_LATCH_LCD_P3, 0);
      gpio_direction_output(H1940_LATCH_LCD_P4, 0);
      gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);

      gpio_request(H1940_LATCH_USB_DP, "USB pullup");
      gpio_direction_output(H1940_LATCH_USB_DP, 0);

      gpio_request(H1940_LATCH_SD_POWER, "SD power");
      gpio_direction_output(H1940_LATCH_SD_POWER, 0);

      platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));

      i2c_register_board_info(0, h1940_i2c_devices,
            ARRAY_SIZE(h1940_i2c_devices));
}

MACHINE_START(H1940, "IPAQ-H1940")
      /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
      .boot_params      = S3C2410_SDRAM_PA + 0x100,
      .map_io           = h1940_map_io,
      .reserve    = h1940_reserve,
      .init_irq   = h1940_init_irq,
      .init_machine     = h1940_init,
      .timer            = &s3c24xx_timer,
MACHINE_END

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