/*

 * PXA270-based Clamshell PDA platforms.

 *

 * Copyright (c) 2006 Openedhand Ltd.

 * Written by Andrzej Zaborowski <balrog@zabor.org>

 *

 * This code is licensed under the GNU GPL v2.

 */

#include "hw.h"

#include "pxa.h"

#include "arm-misc.h"

#include "sysemu.h"

#include "pcmcia.h"

#include "i2c.h"

#include "flash.h"

#include "qemu-timer.h"

#include "devices.h"

#include "sharpsl.h"

#include "console.h"

#include "gui.h"

#include "block.h"

#include "audio/audio.h"

#include "boards.h"

#undef REG_FMT

#if TARGET_PHYS_ADDR_BITS == 32

#define REG_FMT			"0x%02x"

#else

#define REG_FMT			"0x%02lx"

#endif

/* Spitz Flash */

#define FLASH_BASE		0x0c000000

#define FLASH_ECCLPLB		0x00	/* Line parity 7 - 0 bit */

#define FLASH_ECCLPUB		0x04	/* Line parity 15 - 8 bit */

#define FLASH_ECCCP		0x08	/* Column parity 5 - 0 bit */

#define FLASH_ECCCNTR		0x0c	/* ECC byte counter */

#define FLASH_ECCCLRR		0x10	/* Clear ECC */

#define FLASH_FLASHIO		0x14	/* Flash I/O */

#define FLASH_FLASHCTL		0x18	/* Flash Control */

#define FLASHCTL_CE0		(1 << 0)

#define FLASHCTL_CLE		(1 << 1)

#define FLASHCTL_ALE		(1 << 2)

#define FLASHCTL_WP		(1 << 3)

#define FLASHCTL_CE1		(1 << 4)

#define FLASHCTL_RYBY		(1 << 5)

#define FLASHCTL_NCE		(FLASHCTL_CE0 | FLASHCTL_CE1)

struct sl_nand_s {

    struct nand_flash_s *nand;

    uint8_t ctl;

    struct ecc_state_s ecc;

};

static uint32_t sl_readb(void *opaque, target_phys_addr_t addr)

{

    struct sl_nand_s *s = (struct sl_nand_s *) opaque;

    int ryby;

    switch (addr) {

#define BSHR(byte, from, to)	((s->ecc.lp[byte] >> (from - to)) & (1 << to))

    case FLASH_ECCLPLB:

        return BSHR(0, 4, 0) | BSHR(0, 5, 2) | BSHR(0, 6, 4) | BSHR(0, 7, 6) |

                BSHR(1, 4, 1) | BSHR(1, 5, 3) | BSHR(1, 6, 5) | BSHR(1, 7, 7);

#define BSHL(byte, from, to)	((s->ecc.lp[byte] << (to - from)) & (1 << to))

    case FLASH_ECCLPUB:

        return BSHL(0, 0, 0) | BSHL(0, 1, 2) | BSHL(0, 2, 4) | BSHL(0, 3, 6) |

                BSHL(1, 0, 1) | BSHL(1, 1, 3) | BSHL(1, 2, 5) | BSHL(1, 3, 7);

    case FLASH_ECCCP:

        return s->ecc.cp;

    case FLASH_ECCCNTR:

        return s->ecc.count & 0xff;

    case FLASH_FLASHCTL:

        nand_getpins(s->nand, &ryby);

        if (ryby)

            return s->ctl | FLASHCTL_RYBY;

        else

            return s->ctl;

    case FLASH_FLASHIO:

        return ecc_digest(&s->ecc, nand_getio(s->nand));

    default:

        zaurus_printf("Bad register offset " REG_FMT "\n", addr);

    }

    return 0;

}

static uint32_t sl_readl(void *opaque, target_phys_addr_t addr)

{

    struct sl_nand_s *s = (struct sl_nand_s *) opaque;

    if (addr == FLASH_FLASHIO)

        return ecc_digest(&s->ecc, nand_getio(s->nand)) |

                (ecc_digest(&s->ecc, nand_getio(s->nand)) << 16);

    return sl_readb(opaque, addr);

}

static void sl_writeb(void *opaque, target_phys_addr_t addr,

                uint32_t value)

{

    struct sl_nand_s *s = (struct sl_nand_s *) opaque;

    switch (addr) {

    case FLASH_ECCCLRR:

        /* Value is ignored.  */

        ecc_reset(&s->ecc);

        break;

    case FLASH_FLASHCTL:

        s->ctl = value & 0xff & ~FLASHCTL_RYBY;

        nand_setpins(s->nand,

                        s->ctl & FLASHCTL_CLE,

                        s->ctl & FLASHCTL_ALE,

                        s->ctl & FLASHCTL_NCE,

                        s->ctl & FLASHCTL_WP,

                        0);

        break;

    case FLASH_FLASHIO:

        nand_setio(s->nand, ecc_digest(&s->ecc, value & 0xff));

        break;

    default:

        zaurus_printf("Bad register offset " REG_FMT "\n", addr);

    }

}

static void sl_save(QEMUFile *f, void *opaque)

{

    struct sl_nand_s *s = (struct sl_nand_s *) opaque;

    qemu_put_8s(f, &s->ctl);

    ecc_put(f, &s->ecc);

}

static int sl_load(QEMUFile *f, void *opaque, int version_id)

{

    struct sl_nand_s *s = (struct sl_nand_s *) opaque;

    qemu_get_8s(f, &s->ctl);

    ecc_get(f, &s->ecc);

    return 0;

}

enum {

    FLASH_128M,

    FLASH_1024M,

};

static void sl_flash_register(struct pxa2xx_state_s *cpu, int size)

{

    int iomemtype;

    struct sl_nand_s *s;

    CPUReadMemoryFunc *sl_readfn[] = {

        sl_readb,

        sl_readb,

        sl_readl,

    };

    CPUWriteMemoryFunc *sl_writefn[] = {

        sl_writeb,

        sl_writeb,

        sl_writeb,

    };

    s = (struct sl_nand_s *) qemu_mallocz(sizeof(struct sl_nand_s));

    s->ctl = 0;

    if (size == FLASH_128M)

        s->nand = nand_init(NAND_MFR_SAMSUNG, 0x73);

    else if (size == FLASH_1024M)

        s->nand = nand_init(NAND_MFR_SAMSUNG, 0xf1);

    iomemtype = cpu_register_io_memory(0, sl_readfn,

                    sl_writefn, s);

    cpu_register_physical_memory(FLASH_BASE, 0x40, iomemtype);

    register_savevm("sl_flash", 0, 0, sl_save, sl_load, s);

}

/* Spitz Keyboard */

#define SPITZ_KEY_STROBE_NUM	11

#define SPITZ_KEY_SENSE_NUM	7

static const int spitz_gpio_key_sense[SPITZ_KEY_SENSE_NUM] = {

    12, 17, 91, 34, 36, 38, 39

};

static const int spitz_gpio_key_strobe[SPITZ_KEY_STROBE_NUM] = {

    88, 23, 24, 25, 26, 27, 52, 103, 107, 108, 114

};

/* Eighth additional row maps the special keys */

static int spitz_keymap[SPITZ_KEY_SENSE_NUM + 1][SPITZ_KEY_STROBE_NUM] = {

    { 0x1d, 0x02, 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0e, 0x3f, 0x40 },

    {  -1 , 0x03, 0x05, 0x13, 0x15, 0x09, 0x17, 0x18, 0x19, 0x41, 0x42 },

    { 0x0f, 0x10, 0x12, 0x14, 0x22, 0x16, 0x24, 0x25,  -1 ,  -1 ,  -1  },

    { 0x3c, 0x11, 0x1f, 0x21, 0x2f, 0x23, 0x32, 0x26,  -1 , 0x36,  -1  },

    { 0x3b, 0x1e, 0x20, 0x2e, 0x30, 0x31, 0x34,  -1 , 0x1c, 0x2a,  -1  },

    { 0x44, 0x2c, 0x2d, 0x0c, 0x39, 0x33,  -1 , 0x48,  -1 ,  -1 , 0x38 },

    { 0x37, 0x3d,  -1 , 0x45, 0x57, 0x58, 0x4b, 0x50, 0x4d,  -1 ,  -1  },

    { 0x52, 0x43, 0x01, 0x47, 0x49,  -1 ,  -1 ,  -1 ,  -1 ,  -1 ,  -1  },

};

#define SPITZ_GPIO_AK_INT	13	/* Remote control */

#define SPITZ_GPIO_SYNC		16	/* Sync button */

#define SPITZ_GPIO_ON_KEY	95	/* Power button */

#define SPITZ_GPIO_SWA		97	/* Lid */

#define SPITZ_GPIO_SWB		96	/* Tablet mode */

/* The special buttons are mapped to unused keys */

static const int spitz_gpiomap[5] = {

    SPITZ_GPIO_AK_INT, SPITZ_GPIO_SYNC, SPITZ_GPIO_ON_KEY,

    SPITZ_GPIO_SWA, SPITZ_GPIO_SWB,

};

static int spitz_gpio_invert[5] = { 0, 0, 0, 0, 0, };

struct spitz_keyboard_s {

    qemu_irq sense[SPITZ_KEY_SENSE_NUM];

    qemu_irq *strobe;

    qemu_irq gpiomap[5];

    int keymap[0x80];

    uint16_t keyrow[SPITZ_KEY_SENSE_NUM];

    uint16_t strobe_state;

    uint16_t sense_state;

    uint16_t pre_map[0x100];

    uint16_t modifiers;

    uint16_t imodifiers;

    uint8_t fifo[16];

    int fifopos, fifolen;

    QEMUTimer *kbdtimer;

};

static void spitz_keyboard_sense_update(struct spitz_keyboard_s *s)

{

    int i;

    uint16_t strobe, sense = 0;

    for (i = 0; i < SPITZ_KEY_SENSE_NUM; i ++) {

        strobe = s->keyrow[i] & s->strobe_state;

        if (strobe) {

            sense |= 1 << i;

            if (!(s->sense_state & (1 << i)))

                qemu_irq_raise(s->sense[i]);

        } else if (s->sense_state & (1 << i))

            qemu_irq_lower(s->sense[i]);

    }

    s->sense_state = sense;

}

static void spitz_keyboard_strobe(void *opaque, int line, int level)

{

    struct spitz_keyboard_s *s = (struct spitz_keyboard_s *) opaque;

    if (level)

        s->strobe_state |= 1 << line;

    else

        s->strobe_state &= ~(1 << line);

    spitz_keyboard_sense_update(s);

}

static void spitz_keyboard_keydown(struct spitz_keyboard_s *s, int keycode)

{

    int spitz_keycode = s->keymap[keycode & 0x7f];

    if (spitz_keycode == -1)

        return;

    /* Handle the additional keys */

    if ((spitz_keycode >> 4) == SPITZ_KEY_SENSE_NUM) {

        qemu_set_irq(s->gpiomap[spitz_keycode & 0xf], (keycode < 0x80) ^

                        spitz_gpio_invert[spitz_keycode & 0xf]);

        return;

    }

    if (keycode & 0x80)

        s->keyrow[spitz_keycode >> 4] &= ~(1 << (spitz_keycode & 0xf));

    else

        s->keyrow[spitz_keycode >> 4] |= 1 << (spitz_keycode & 0xf);

    spitz_keyboard_sense_update(s);

}

#define SHIFT	(1 << 7)

#define CTRL	(1 << 8)

#define FN	(1 << 9)

#define QUEUE_KEY(c)	s->fifo[(s->fifopos + s->fifolen ++) & 0xf] = c

static void spitz_keyboard_handler(void *opaque, int keycode)

{

    struct spitz_keyboard_s * const s = opaque;

    uint16_t code;

    int mapcode;

    switch (keycode) {

    case 0x2a:	/* Left Shift */

        s->modifiers |= 1;

        break;

    case 0xaa:

        s->modifiers &= ~1;

        break;

    case 0x36:	/* Right Shift */

        s->modifiers |= 2;

        break;

    case 0xb6:

        s->modifiers &= ~2;

        break;

    case 0x1d:	/* Control */

        s->modifiers |= 4;

        break;

    case 0x9d:

        s->modifiers &= ~4;

        break;

    case 0x38:	/* Alt */

        s->modifiers |= 8;

        break;

    case 0xb8:

        s->modifiers &= ~8;

        break;

    }

    code = s->pre_map[mapcode = ((s->modifiers & 3) ?

            (keycode | SHIFT) :

            (keycode & ~SHIFT))];

    if (code != mapcode) {

#if 0

        if ((code & SHIFT) && !(s->modifiers & 1))

            QUEUE_KEY(0x2a | (keycode & 0x80));

        if ((code & CTRL ) && !(s->modifiers & 4))

            QUEUE_KEY(0x1d | (keycode & 0x80));

        if ((code & FN   ) && !(s->modifiers & 8))

            QUEUE_KEY(0x38 | (keycode & 0x80));

        if ((code & FN   ) && (s->modifiers & 1))

            QUEUE_KEY(0x2a | (~keycode & 0x80));

        if ((code & FN   ) && (s->modifiers & 2))

            QUEUE_KEY(0x36 | (~keycode & 0x80));

#else

        if (keycode & 0x80) {

            if ((s->imodifiers & 1   ) && !(s->modifiers & 1))

                QUEUE_KEY(0x2a | 0x80);

            if ((s->imodifiers & 4   ) && !(s->modifiers & 4))

                QUEUE_KEY(0x1d | 0x80);

            if ((s->imodifiers & 8   ) && !(s->modifiers & 8))

                QUEUE_KEY(0x38 | 0x80);

            if ((s->imodifiers & 0x10) && (s->modifiers & 1))

                QUEUE_KEY(0x2a);

            if ((s->imodifiers & 0x20) && (s->modifiers & 2))

                QUEUE_KEY(0x36);

            s->imodifiers = 0;

        } else {

            if ((code & SHIFT) && !((s->modifiers | s->imodifiers) & 1)) {

                QUEUE_KEY(0x2a);

                s->imodifiers |= 1;

            }

            if ((code & CTRL ) && !((s->modifiers | s->imodifiers) & 4)) {

                QUEUE_KEY(0x1d);

                s->imodifiers |= 4;

            }

            if ((code & FN   ) && !((s->modifiers | s->imodifiers) & 8)) {

                QUEUE_KEY(0x38);

                s->imodifiers |= 8;

            }

            if ((code & FN   ) && (s->modifiers & 1) &&

                            !(s->imodifiers & 0x10)) {

                QUEUE_KEY(0x2a | 0x80);

                s->imodifiers |= 0x10;

            }

            if ((code & FN   ) && (s->modifiers & 2) &&

                            !(s->imodifiers & 0x20)) {

                QUEUE_KEY(0x36 | 0x80);

                s->imodifiers |= 0x20;

            }

        }

#endif

    }

    QUEUE_KEY((code & 0x7f) | (keycode & 0x80));

}

static void spitz_keyboard_tick(void *opaque)

{

    struct spitz_keyboard_s *s = (struct spitz_keyboard_s *) opaque;

    if (s->fifolen) {

        spitz_keyboard_keydown(s, s->fifo[s->fifopos ++]);

        s->fifolen --;

        if (s->fifopos >= 16)

            s->fifopos = 0;

    }

    qemu_mod_timer(s->kbdtimer, qemu_get_clock(vm_clock) + ticks_per_sec / 32);

}

static void spitz_keyboard_pre_map(struct spitz_keyboard_s *s)

{

    int i;

    for (i = 0; i < 0x100; i ++)

        s->pre_map[i] = i;

    s->pre_map[0x02 | SHIFT	] = 0x02 | SHIFT;	/* exclam */

    s->pre_map[0x28 | SHIFT	] = 0x03 | SHIFT;	/* quotedbl */

    s->pre_map[0x04 | SHIFT	] = 0x04 | SHIFT;	/* numbersign */

    s->pre_map[0x05 | SHIFT	] = 0x05 | SHIFT;	/* dollar */

    s->pre_map[0x06 | SHIFT	] = 0x06 | SHIFT;	/* percent */

    s->pre_map[0x08 | SHIFT	] = 0x07 | SHIFT;	/* ampersand */

    s->pre_map[0x28		] = 0x08 | SHIFT;	/* apostrophe */

    s->pre_map[0x0a | SHIFT	] = 0x09 | SHIFT;	/* parenleft */

    s->pre_map[0x0b | SHIFT	] = 0x0a | SHIFT;	/* parenright */

    s->pre_map[0x29 | SHIFT	] = 0x0b | SHIFT;	/* asciitilde */

    s->pre_map[0x03 | SHIFT	] = 0x0c | SHIFT;	/* at */

    s->pre_map[0xd3		] = 0x0e | FN;		/* Delete */

    s->pre_map[0x3a		] = 0x0f | FN;		/* Caps_Lock */

    s->pre_map[0x07 | SHIFT	] = 0x11 | FN;		/* asciicircum */

    s->pre_map[0x0d		] = 0x12 | FN;		/* equal */

    s->pre_map[0x0d | SHIFT	] = 0x13 | FN;		/* plus */

    s->pre_map[0x1a		] = 0x14 | FN;		/* bracketleft */

    s->pre_map[0x1b		] = 0x15 | FN;		/* bracketright */

    s->pre_map[0x1a | SHIFT	] = 0x16 | FN;		/* braceleft */

    s->pre_map[0x1b | SHIFT	] = 0x17 | FN;		/* braceright */

    s->pre_map[0x27		] = 0x22 | FN;		/* semicolon */

    s->pre_map[0x27 | SHIFT	] = 0x23 | FN;		/* colon */

    s->pre_map[0x09 | SHIFT	] = 0x24 | FN;		/* asterisk */

    s->pre_map[0x2b		] = 0x25 | FN;		/* backslash */

    s->pre_map[0x2b | SHIFT	] = 0x26 | FN;		/* bar */

    s->pre_map[0x0c | SHIFT	] = 0x30 | FN;		/* underscore */

    s->pre_map[0x33 | SHIFT	] = 0x33 | FN;		/* less */

    s->pre_map[0x35		] = 0x33 | SHIFT;	/* slash */

    s->pre_map[0x34 | SHIFT	] = 0x34 | FN;		/* greater */

    s->pre_map[0x35 | SHIFT	] = 0x34 | SHIFT;	/* question */

    s->pre_map[0x49		] = 0x48 | FN;		/* Page_Up */

    s->pre_map[0x51		] = 0x50 | FN;		/* Page_Down */

    s->modifiers = 0;

    s->imodifiers = 0;

    s->fifopos = 0;

    s->fifolen = 0;

    s->kbdtimer = qemu_new_timer(vm_clock, spitz_keyboard_tick, s);

    spitz_keyboard_tick(s);

}

#undef SHIFT

#undef CTRL

#undef FN

static void spitz_keyboard_save(QEMUFile *f, void *opaque)

{

    struct spitz_keyboard_s *s = (struct spitz_keyboard_s *) opaque;

    int i;

    qemu_put_be16s(f, &s->sense_state);

    qemu_put_be16s(f, &s->strobe_state);

    for (i = 0; i < 5; i ++)

        qemu_put_byte(f, spitz_gpio_invert[i]);

}

static int spitz_keyboard_load(QEMUFile *f, void *opaque, int version_id)

{

    struct spitz_keyboard_s *s = (struct spitz_keyboard_s *) opaque;

    int i;

    qemu_get_be16s(f, &s->sense_state);

    qemu_get_be16s(f, &s->strobe_state);

    for (i = 0; i < 5; i ++)

        spitz_gpio_invert[i] = qemu_get_byte(f);

    /* Release all pressed keys */

    memset(s->keyrow, 0, sizeof(s->keyrow));

    spitz_keyboard_sense_update(s);

    s->modifiers = 0;

    s->imodifiers = 0;

    s->fifopos = 0;

    s->fifolen = 0;

    return 0;

}

static void spitz_keyboard_register(struct pxa2xx_state_s *cpu)

{

    int i, j;

    struct spitz_keyboard_s *s;

    s = (struct spitz_keyboard_s *)

            qemu_mallocz(sizeof(struct spitz_keyboard_s));

    memset(s, 0, sizeof(struct spitz_keyboard_s));

    for (i = 0; i < 0x80; i ++)

        s->keymap[i] = -1;

    for (i = 0; i < SPITZ_KEY_SENSE_NUM + 1; i ++)

        for (j = 0; j < SPITZ_KEY_STROBE_NUM; j ++)

            if (spitz_keymap[i][j] != -1)

                s->keymap[spitz_keymap[i][j]] = (i << 4) | j;

    for (i = 0; i < SPITZ_KEY_SENSE_NUM; i ++)

        s->sense[i] = pxa2xx_gpio_in_get(cpu->gpio)[spitz_gpio_key_sense[i]];

    for (i = 0; i < 5; i ++)

        s->gpiomap[i] = pxa2xx_gpio_in_get(cpu->gpio)[spitz_gpiomap[i]];

    s->strobe = qemu_allocate_irqs(spitz_keyboard_strobe, s,

                    SPITZ_KEY_STROBE_NUM);

    for (i = 0; i < SPITZ_KEY_STROBE_NUM; i ++)

        pxa2xx_gpio_out_set(cpu->gpio, spitz_gpio_key_strobe[i], s->strobe[i]);

    spitz_keyboard_pre_map(s);

    gui_register_dev_key_callback(spitz_keyboard_handler, s);

    register_savevm("spitz_keyboard", 0, 0,

                    spitz_keyboard_save, spitz_keyboard_load, s);

}

/* LCD backlight controller */

#define LCDTG_RESCTL	0x00

#define LCDTG_PHACTRL	0x01

#define LCDTG_DUTYCTRL	0x02

#define LCDTG_POWERREG0	0x03

#define LCDTG_POWERREG1	0x04

#define LCDTG_GPOR3	0x05

#define LCDTG_PICTRL	0x06

#define LCDTG_POLCTRL	0x07