/*
 * linux/arch/arm/mach-sa1100/collie.c
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * This file contains all Collie-specific tweaks.
 *
 * 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.
 *
 * ChangeLog:
 *  2006 Pavel Machek <pavel@ucw.cz>
 *  03-06-2004 John Lenz <lenz@cs.wisc.edu>
 *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
 *  04-16-2001 Lineo Japan,Inc. ...
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/platform_data/sa11x0-serial.h>
#include <linux/platform_device.h>
#include <linux/mfd/ucb1x00.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/power/gpio-charger.h>

#include <video/sa1100fb.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <mach/collie.h>

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

#include <asm/hardware/scoop.h>
#include <asm/mach/sharpsl_param.h>
#include <asm/hardware/locomo.h>
#include <linux/platform_data/mfd-mcp-sa11x0.h>
#include <mach/irqs.h>

#include "generic.h"

static struct resource collie_scoop_resources[] = {
        [0] = DEFINE_RES_MEM(0x40800000, SZ_4K),
};

static struct scoop_config collie_scoop_setup = {
        .io_dir         = COLLIE_SCOOP_IO_DIR,
        .io_out         = COLLIE_SCOOP_IO_OUT,
        .gpio_base      = COLLIE_SCOOP_GPIO_BASE,
};

struct platform_device colliescoop_device = {
        .name           = "sharp-scoop",
        .id             = -1,
        .dev            = {
                .platform_data  = &collie_scoop_setup,
        },
        .num_resources  = ARRAY_SIZE(collie_scoop_resources),
        .resource       = collie_scoop_resources,
};

static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
        {
        .dev            = &colliescoop_device.dev,
        .irq            = COLLIE_IRQ_GPIO_CF_IRQ,
        .cd_irq         = COLLIE_IRQ_GPIO_CF_CD,
        .cd_irq_str     = "PCMCIA0 CD",
        },
};

static struct scoop_pcmcia_config collie_pcmcia_config = {
        .devs           = &collie_pcmcia_scoop[0],
        .num_devs       = 1,
};

static struct ucb1x00_plat_data collie_ucb1x00_data = {
        .gpio_base      = COLLIE_TC35143_GPIO_BASE,
};

static struct mcp_plat_data collie_mcp_data = {
        .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
        .sclk_rate      = 9216000,
        .codec_pdata    = &collie_ucb1x00_data,
};

/* Battery management GPIOs */
static struct gpiod_lookup_table collie_battery_gpiod_table = {
        /* the MCP codec mcp0 has the ucb1x00 as attached device */
        .dev_id = "ucb1x00",
        .table = {
                /* This is found on the main GPIO on the SA1100 */
                GPIO_LOOKUP("gpio", COLLIE_GPIO_CO,
                            "main battery full", GPIO_ACTIVE_HIGH),
                GPIO_LOOKUP("gpio", COLLIE_GPIO_MAIN_BAT_LOW,
                            "main battery low", GPIO_ACTIVE_HIGH),
                /*
                 * This is GPIO 0 on the Scoop expander, which is registered
                 * from common/scoop.c with this gpio chip label.
                 */
                GPIO_LOOKUP("sharp-scoop", 0,
                            "main charge on", GPIO_ACTIVE_HIGH),
                { },
        },
};

/*
 * Collie AC IN
 */
static struct gpiod_lookup_table collie_power_gpiod_table = {
        .dev_id = "gpio-charger",
        .table = {
                GPIO_LOOKUP("gpio", COLLIE_GPIO_AC_IN,
                            NULL, GPIO_ACTIVE_HIGH),
                { },
        },
};

static char *collie_ac_supplied_to[] = {
        "main-battery",
        "backup-battery",
};

static struct gpio_charger_platform_data collie_power_data = {
        .name                   = "charger",
        .type                   = POWER_SUPPLY_TYPE_MAINS,
        .supplied_to            = collie_ac_supplied_to,
        .num_supplicants        = ARRAY_SIZE(collie_ac_supplied_to),
};

static struct platform_device collie_power_device = {
        .name                   = "gpio-charger",
        .id                     = -1,
        .dev.platform_data      = &collie_power_data,
};

#ifdef CONFIG_SHARP_LOCOMO
/*
 * low-level UART features.
 */
struct platform_device collie_locomo_device;

static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
        if (mctrl & TIOCM_RTS)
                locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
        else
                locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);

        if (mctrl & TIOCM_DTR)
                locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
        else
                locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
}

static u_int collie_uart_get_mctrl(struct uart_port *port)
{
        int ret = TIOCM_CD;
        unsigned int r;

        r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
        if (r == -ENODEV)
                return ret;
        if (r & LOCOMO_GPIO_CTS)
                ret |= TIOCM_CTS;
        if (r & LOCOMO_GPIO_DSR)
                ret |= TIOCM_DSR;

        return ret;
}

static struct sa1100_port_fns collie_port_fns __initdata = {
        .set_mctrl      = collie_uart_set_mctrl,
        .get_mctrl      = collie_uart_get_mctrl,
};

static int collie_uart_probe(struct locomo_dev *dev)
{
        return 0;
}

static struct locomo_driver collie_uart_driver = {
        .drv = {
                .name = "collie_uart",
        },
        .devid  = LOCOMO_DEVID_UART,
        .probe  = collie_uart_probe,
};

static int __init collie_uart_init(void)
{
        return locomo_driver_register(&collie_uart_driver);
}
device_initcall(collie_uart_init);

#endif


static struct resource locomo_resources[] = {
        [0] = DEFINE_RES_MEM(0x40000000, SZ_8K),
        [1] = DEFINE_RES_IRQ(IRQ_GPIO25),
};

static struct locomo_platform_data locomo_info = {
        .irq_base       = IRQ_BOARD_START,
};

struct platform_device collie_locomo_device = {
        .name           = "locomo",
        .id             = 0,
        .dev            = {
                .platform_data  = &locomo_info,
        },
        .num_resources  = ARRAY_SIZE(locomo_resources),
        .resource       = locomo_resources,
};

static struct gpio_keys_button collie_gpio_keys[] = {
        {
                .type   = EV_PWR,
                .code   = KEY_RESERVED,
                .gpio   = COLLIE_GPIO_ON_KEY,
                .desc   = "On key",
                .wakeup = 1,
                .active_low = 1,
        },
        {
                .type   = EV_PWR,
                .code   = KEY_WAKEUP,
                .gpio   = COLLIE_GPIO_WAKEUP,
                .desc   = "Sync",
                .wakeup = 1,
                .active_low = 1,
        },
};

static struct gpio_keys_platform_data collie_gpio_keys_data = {
        .buttons        = collie_gpio_keys,
        .nbuttons       = ARRAY_SIZE(collie_gpio_keys),
};

static struct platform_device collie_gpio_keys_device = {
        .name   = "gpio-keys",
        .id     = -1,
        .dev    = {
                .platform_data = &collie_gpio_keys_data,
        },
};

static struct platform_device *devices[] __initdata = {
        &collie_locomo_device,
        &colliescoop_device,
        &collie_power_device,
        &collie_gpio_keys_device,
};

static struct mtd_partition collie_partitions[] = {
        {
                .name           = "bootloader",
                .offset         = 0,
                .size           = 0x000C0000,
                .mask_flags     = MTD_WRITEABLE
        }, {
                .name           = "kernel",
                .offset         = MTDPART_OFS_APPEND,
                .size           = 0x00100000,
        }, {
                .name           = "rootfs",
                .offset         = MTDPART_OFS_APPEND,
                .size           = 0x00e20000,
        }, {
                .name           = "bootblock",
                .offset         = MTDPART_OFS_APPEND,
                .size           = 0x00020000,
                .mask_flags     = MTD_WRITEABLE
        }
};

static int collie_flash_init(void)
{
        int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable");
        if (rc)
                return rc;

        rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1);
        if (rc)
                gpio_free(COLLIE_GPIO_VPEN);

        return rc;
}

static void collie_set_vpp(int vpp)
{
        gpio_set_value(COLLIE_GPIO_VPEN, vpp);
}

static void collie_flash_exit(void)
{
        gpio_free(COLLIE_GPIO_VPEN);
}

static struct flash_platform_data collie_flash_data = {
        .map_name       = "cfi_probe",
        .init           = collie_flash_init,
        .set_vpp        = collie_set_vpp,
        .exit           = collie_flash_exit,
        .parts          = collie_partitions,
        .nr_parts       = ARRAY_SIZE(collie_partitions),
};

static struct resource collie_flash_resources[] = {
        DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M),
};

static struct sa1100fb_mach_info collie_lcd_info = {
        .pixclock       = 171521,       .bpp            = 16,
        .xres           = 320,          .yres           = 240,

        .hsync_len      = 5,            .vsync_len      = 1,
        .left_margin    = 11,           .upper_margin   = 2,
        .right_margin   = 30,           .lower_margin   = 0,

        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

        .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
        .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),

#ifdef CONFIG_BACKLIGHT_LOCOMO
        .lcd_power      = locomolcd_power
#endif
};

static void __init collie_init(void)
{
        int ret = 0;

        /* cpu initialize */
        GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
                GPIO_MCP_CLK | GPIO_32_768kHz;

        GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
                GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
                GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
                _COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON |
                _COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;

        PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
                PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
                PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;

        PWER = 0;

        PGSR = _COLLIE_GPIO_nREMOCON_ON;

        PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;

        PCFR = PCFR_OPDE;

        GPSR |= _COLLIE_GPIO_UCB1x00_RESET;

        sa11x0_ppc_configure_mcp();


        platform_scoop_config = &collie_pcmcia_config;

        gpiod_add_lookup_table(&collie_power_gpiod_table);
        gpiod_add_lookup_table(&collie_battery_gpiod_table);

        ret = platform_add_devices(devices, ARRAY_SIZE(devices));
        if (ret) {
                printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
        }

        sa11x0_register_lcd(&collie_lcd_info);
        sa11x0_register_mtd(&collie_flash_data, collie_flash_resources,
                            ARRAY_SIZE(collie_flash_resources));
        sa11x0_register_mcp(&collie_mcp_data);

        sharpsl_save_param();
}

static struct map_desc collie_io_desc[] __initdata = {
        {       /* 32M main flash (cs0) */
                .virtual        = 0xe8000000,
                .pfn            = __phys_to_pfn(0x00000000),
                .length         = 0x02000000,
                .type           = MT_DEVICE
        }, {    /* 32M boot flash (cs1) */
                .virtual        = 0xea000000,
                .pfn            = __phys_to_pfn(0x08000000),
                .length         = 0x02000000,
                .type           = MT_DEVICE
        }
};

static void __init collie_map_io(void)
{
        sa1100_map_io();
        iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));

#ifdef CONFIG_SHARP_LOCOMO
        sa1100_register_uart_fns(&collie_port_fns);
#endif
        sa1100_register_uart(0, 3);
        sa1100_register_uart(1, 1);
}

MACHINE_START(COLLIE, "Sharp-Collie")
        .map_io         = collie_map_io,
        .nr_irqs        = SA1100_NR_IRQS,
        .init_irq       = sa1100_init_irq,
        .init_time      = sa1100_timer_init,
        .init_machine   = collie_init,
        .init_late      = sa11x0_init_late,
        .restart        = sa11x0_restart,
MACHINE_END