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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 <linux/gpio.h>
#include <linux/backlight.h>
#include <linux/io.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/spi/corgi_lcd.h>
#include <video/w100fb.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-pxa25x.h>
#include <mach/i2c.h>
#include <mach/irda.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa2xx_spi.h>
#include <mach/corgi.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 corgi_pin_config[] __initdata = {
      /* Static Memory I/O */
      GPIO78_nCS_2,     /* w100fb */
      GPIO80_nCS_4,     /* scoop */

      /* SSP1 */
      GPIO23_SSP1_SCLK,
      GPIO25_SSP1_TXD,
      GPIO26_SSP1_RXD,
      GPIO24_GPIO,      /* CORGI_GPIO_ADS7846_CS - SFRM as chip select */

      /* I2S */
      GPIO28_I2S_BITCLK_OUT,
      GPIO29_I2S_SDATA_IN,
      GPIO30_I2S_SDATA_OUT,
      GPIO31_I2S_SYNC,
      GPIO32_I2S_SYSCLK,

      /* Infra-Red */
      GPIO47_FICP_TXD,
      GPIO46_FICP_RXD,

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

      /* PC Card */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO52_nPCE_1,
      GPIO53_nPCE_2,
      GPIO54_nPSKTSEL,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,

      /* MMC */
      GPIO6_MMC_CLK,
      GPIO8_MMC_CS0,

      /* GPIO */
      GPIO9_GPIO, /* CORGI_GPIO_nSD_DETECT */
      GPIO7_GPIO, /* CORGI_GPIO_nSD_WP */
      GPIO33_GPIO,      /* CORGI_GPIO_SD_PWR */
      GPIO22_GPIO,      /* CORGI_GPIO_IR_ON */
      GPIO44_GPIO,      /* CORGI_GPIO_HSYNC */

      GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
};

/*
 * 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,
      .gpio_base  = CORGI_SCOOP_GPIO_BASE,
};

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 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,
};

EXPORT_SYMBOL(corgiscoop_device);

static struct w100_mem_info corgi_fb_mem = {
      .ext_cntl          = 0x00040003,
      .sdram_mode_reg    = 0x00650021,
      .ext_timing_cntl   = 0x10002a4a,
      .io_cntl           = 0x7ff87012,
      .size              = 0x1fffff,
};

static struct w100_gen_regs corgi_fb_regs = {
      .lcd_format    = 0x00000003,
      .lcdd_cntl1    = 0x01CC0000,
      .lcdd_cntl2    = 0x0003FFFF,
      .genlcd_cntl1  = 0x00FFFF0D,
      .genlcd_cntl2  = 0x003F3003,
      .genlcd_cntl3  = 0x000102aa,
};

static struct w100_gpio_regs corgi_fb_gpio = {
      .init_data1   = 0x000000bf,
      .init_data2   = 0x00000000,
      .gpio_dir1    = 0x00000000,
      .gpio_oe1     = 0x03c0feff,
      .gpio_dir2    = 0x00000000,
      .gpio_oe2     = 0x00000000,
};

static struct w100_mode corgi_fb_modes[] = {
{
      .xres            = 480,
      .yres            = 640,
      .left_margin     = 0x56,
      .right_margin    = 0x55,
      .upper_margin    = 0x03,
      .lower_margin    = 0x00,
      .crtc_ss         = 0x82360056,
      .crtc_ls         = 0xA0280000,
      .crtc_gs         = 0x80280028,
      .crtc_vpos_gs    = 0x02830002,
      .crtc_rev        = 0x00400008,
      .crtc_dclk       = 0xA0000000,
      .crtc_gclk       = 0x8015010F,
      .crtc_goe        = 0x80100110,
      .crtc_ps1_active = 0x41060010,
      .pll_freq        = 75,
      .fast_pll_freq   = 100,
      .sysclk_src      = CLK_SRC_PLL,
      .sysclk_divider  = 0,
      .pixclk_src      = CLK_SRC_PLL,
      .pixclk_divider  = 2,
      .pixclk_divider_rotated = 6,
},{
      .xres            = 240,
      .yres            = 320,
      .left_margin     = 0x27,
      .right_margin    = 0x2e,
      .upper_margin    = 0x01,
      .lower_margin    = 0x00,
      .crtc_ss         = 0x81170027,
      .crtc_ls         = 0xA0140000,
      .crtc_gs         = 0xC0140014,
      .crtc_vpos_gs    = 0x00010141,
      .crtc_rev        = 0x00400008,
      .crtc_dclk       = 0xA0000000,
      .crtc_gclk       = 0x8015010F,
      .crtc_goe        = 0x80100110,
      .crtc_ps1_active = 0x41060010,
      .pll_freq        = 0,
      .fast_pll_freq   = 0,
      .sysclk_src      = CLK_SRC_XTAL,
      .sysclk_divider  = 0,
      .pixclk_src      = CLK_SRC_XTAL,
      .pixclk_divider  = 1,
      .pixclk_divider_rotated = 1,
},

};

static struct w100fb_mach_info corgi_fb_info = {
      .init_mode  = INIT_MODE_ROTATED,
      .mem        = &corgi_fb_mem,
      .regs       = &corgi_fb_regs,
      .modelist   = &corgi_fb_modes[0],
      .num_modes  = 2,
      .gpio       = &corgi_fb_gpio,
      .xtal_freq  = 12500000,
      .xtal_dbl   = 0,
};

static struct resource corgi_fb_resources[] = {
      [0] = {
            .start   = 0x08000000,
            .end     = 0x08ffffff,
            .flags   = IORESOURCE_MEM,
      },
};

static struct platform_device corgifb_device = {
      .name           = "w100fb",
      .id             = -1,
      .num_resources    = ARRAY_SIZE(corgi_fb_resources),
      .resource   = corgi_fb_resources,
      .dev            = {
            .platform_data = &corgi_fb_info,
      },

};

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

/*
 * Corgi LEDs
 */
static struct gpio_led corgi_gpio_leds[] = {
      {
            .name             = "corgi:amber:charge",
            .default_trigger  = "sharpsl-charge",
            .gpio             = CORGI_GPIO_LED_ORANGE,
      },
      {
            .name             = "corgi:green:mail",
            .default_trigger  = "nand-disk",
            .gpio             = CORGI_GPIO_LED_GREEN,
      },
};

static struct gpio_led_platform_data corgi_gpio_leds_info = {
      .leds       = corgi_gpio_leds,
      .num_leds   = ARRAY_SIZE(corgi_gpio_leds),
};

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

/*
 * 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, irq_handler_t corgi_detect_int, void *data)
{
      int err;

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

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

      err = gpio_request(CORGI_GPIO_SD_PWR, "SD_PWR");
      if (err)
            goto err_free_2;

      gpio_direction_input(CORGI_GPIO_nSD_DETECT);
      gpio_direction_input(CORGI_GPIO_nSD_WP);
      gpio_direction_output(CORGI_GPIO_SD_PWR, 0);

      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) {
            pr_err("%s: MMC/SD: can't request MMC card detect IRQ\n",
                        __func__);
            goto err_free_3;
      }
      return 0;

err_free_3:
      gpio_free(CORGI_GPIO_SD_PWR);
err_free_2:
      gpio_free(CORGI_GPIO_nSD_WP);
err_free_1:
      gpio_free(CORGI_GPIO_nSD_DETECT);
err_out:
      return err;
}

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

      gpio_set_value(CORGI_GPIO_SD_PWR, ((1 << vdd) & p_d->ocr_mask));
}

static int corgi_mci_get_ro(struct device *dev)
{
      return gpio_get_value(CORGI_GPIO_nSD_WP);
}

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

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)
{
      gpio_set_value(CORGI_GPIO_IR_ON, mode & IR_OFF);
      pxa2xx_transceiver_mode(dev, mode);
}

static int corgi_irda_startup(struct device *dev)
{
      int err;

      err = gpio_request(CORGI_GPIO_IR_ON, "IR_ON");
      if (err)
            return err;

      gpio_direction_output(CORGI_GPIO_IR_ON, 1);
      return 0;
}

static void corgi_irda_shutdown(struct device *dev)
{
      gpio_free(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,
      .startup          = corgi_irda_startup,
      .shutdown         = corgi_irda_shutdown,
};


/*
 * USB Device Controller
 */
static struct pxa2xx_udc_mach_info udc_info __initdata = {
      /* no connect GPIO; corgi can't tell connection status */
      .gpio_pullup            = CORGI_GPIO_USB_PULLUP,
};

#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MASTER)
static struct pxa2xx_spi_master corgi_spi_info = {
      .num_chipselect   = 3,
};

static struct ads7846_platform_data corgi_ads7846_info = {
      .model                  = 7846,
      .vref_delay_usecs = 100,
      .x_plate_ohms           = 419,
      .y_plate_ohms           = 486,
      .gpio_pendown           = CORGI_GPIO_TP_INT,
};

static void corgi_ads7846_cs(u32 command)
{
      gpio_set_value(CORGI_GPIO_ADS7846_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip corgi_ads7846_chip = {
      .cs_control = corgi_ads7846_cs,
};

static void corgi_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 corgi_lcdcon_info = {
      .init_mode        = CORGI_LCD_MODE_VGA,
      .max_intensity          = 0x2f,
      .default_intensity      = 0x1f,
      .limit_mask       = 0x0b,
      .gpio_backlight_cont    = CORGI_GPIO_BACKLIGHT_CONT,
      .gpio_backlight_on      = -1,
      .kick_battery           = corgi_bl_kick_battery,
};

static void corgi_lcdcon_cs(u32 command)
{
      gpio_set_value(CORGI_GPIO_LCDCON_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip corgi_lcdcon_chip = {
      .cs_control = corgi_lcdcon_cs,
};

static void corgi_max1111_cs(u32 command)
{
      gpio_set_value(CORGI_GPIO_MAX1111_CS, !(command == PXA2XX_CS_ASSERT));
}

static struct pxa2xx_spi_chip corgi_max1111_chip = {
      .cs_control = corgi_max1111_cs,
};

static struct spi_board_info corgi_spi_devices[] = {
      {
            .modalias   = "ads7846",
            .max_speed_hz     = 1200000,
            .bus_num    = 1,
            .chip_select      = 0,
            .platform_data    = &corgi_ads7846_info,
            .controller_data= &corgi_ads7846_chip,
            .irq        = gpio_to_irq(CORGI_GPIO_TP_INT),
      }, {
            .modalias   = "corgi-lcd",
            .max_speed_hz     = 50000,
            .bus_num    = 1,
            .chip_select      = 1,
            .platform_data    = &corgi_lcdcon_info,
            .controller_data= &corgi_lcdcon_chip,
      }, {
            .modalias   = "max1111",
            .max_speed_hz     = 450000,
            .bus_num    = 1,
            .chip_select      = 2,
            .controller_data= &corgi_max1111_chip,
      },
};

static void __init corgi_init_spi(void)
{
      int err;

      err = gpio_request(CORGI_GPIO_ADS7846_CS, "ADS7846_CS");
      if (err)
            return;

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

      err = gpio_request(CORGI_GPIO_MAX1111_CS, "MAX1111_CS");
      if (err)
            goto err_free_2;

      gpio_direction_output(CORGI_GPIO_ADS7846_CS, 1);
      gpio_direction_output(CORGI_GPIO_LCDCON_CS, 1);
      gpio_direction_output(CORGI_GPIO_MAX1111_CS, 1);

      pxa2xx_set_spi_info(1, &corgi_spi_info);
      spi_register_board_info(ARRAY_AND_SIZE(corgi_spi_devices));
      return;

err_free_2:
      gpio_free(CORGI_GPIO_LCDCON_CS);
err_free_1:
      gpio_free(CORGI_GPIO_ADS7846_CS);
}
#else
static inline void corgi_init_spi(void) {}
#endif

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

static void corgi_poweroff(void)
{
      if (!machine_is_corgi())
            /* Green LED off tells the bootloader to halt */
            gpio_set_value(CORGI_GPIO_LED_GREEN, 0);

      arm_machine_restart('h');
}

static void corgi_restart(char mode)
{
      if (!machine_is_corgi())
            /* Green LED on tells the bootloader to reboot */
            gpio_set_value(CORGI_GPIO_LED_GREEN, 1);

      arm_machine_restart('h');
}

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

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

      pxa2xx_mfp_config(ARRAY_AND_SIZE(corgi_pin_config));

      corgi_init_spi();

      pxa_set_udc_info(&udc_info);
      pxa_set_mci_info(&corgi_mci_platform_data);
      pxa_set_ficp_info(&corgi_ficp_platform_data);
      pxa_set_i2c_info(NULL);

      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   = pxa25x_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   = pxa25x_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   = pxa25x_init_irq,
      .init_machine     = corgi_init,
      .timer            = &pxa_timer,
MACHINE_END
#endif


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