twl92230.c

xen虚拟机源代码安装包

/*
 * TI TWL92230C energy-management companion device for the OMAP24xx.
 * Aka. Menelaus (N4200 MENELAUS1_V2.2)
 *
 * Copyright (C) 2008 Nokia Corporation
 * Written by Andrzej Zaborowski <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 or
 * (at your option) version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include "hw.h"
#include "qemu-timer.h"
#include "i2c.h"
#include "sysemu.h"
#include "console.h"

#define VERBOSE 1

struct menelaus_s {
    i2c_slave i2c;
    qemu_irq irq;

    int firstbyte;
    uint8_t reg;

    uint8_t vcore[5];
    uint8_t dcdc[3];
    uint8_t ldo[8];
    uint8_t sleep[2];
    uint8_t osc;
    uint8_t detect;
    uint16_t mask;
    uint16_t status;
    uint8_t dir;
    uint8_t inputs;
    uint8_t outputs;
    uint8_t bbsms;
    uint8_t pull[4];
    uint8_t mmc_ctrl[3];
    uint8_t mmc_debounce;
    struct {
        uint8_t ctrl;
        uint16_t comp;
        QEMUTimer *hz;
        int64_t next;
        struct tm tm;
        struct tm new;
        struct tm alm;
        int sec_offset;
        int alm_sec;
        int next_comp;
    } rtc;
    qemu_irq handler[3];
    qemu_irq *in;
    int pwrbtn_state;
    qemu_irq pwrbtn;
};

static inline void menelaus_update(struct menelaus_s *s)
{
    qemu_set_irq(s->irq, s->status & ~s->mask);
}

static inline void menelaus_rtc_start(struct menelaus_s *s)
{
    s->rtc.next =+ qemu_get_clock(rt_clock);
    qemu_mod_timer(s->rtc.hz, s->rtc.next);
}

static inline void menelaus_rtc_stop(struct menelaus_s *s)
{
    qemu_del_timer(s->rtc.hz);
    s->rtc.next =- qemu_get_clock(rt_clock);
    if (s->rtc.next < 1)
        s->rtc.next = 1;
}

static void menelaus_rtc_update(struct menelaus_s *s)
{
    qemu_get_timedate(&s->rtc.tm, s->rtc.sec_offset);
}

static void menelaus_alm_update(struct menelaus_s *s)
{
    if ((s->rtc.ctrl & 3) == 3)
        s->rtc.alm_sec = qemu_timedate_diff(&s->rtc.alm) - s->rtc.sec_offset;
}

static void menelaus_rtc_hz(void *opaque)
{
    struct menelaus_s *s = (struct menelaus_s *) opaque;

    s->rtc.next_comp --;
    s->rtc.alm_sec --;
    s->rtc.next += 1000;
    qemu_mod_timer(s->rtc.hz, s->rtc.next);
    if ((s->rtc.ctrl >> 3) & 3) {				/* EVERY */
        menelaus_rtc_update(s);
        if (((s->rtc.ctrl >> 3) & 3) == 1 && !s->rtc.tm.tm_sec)
            s->status |= 1 << 8;				/* RTCTMR */
        else if (((s->rtc.ctrl >> 3) & 3) == 2 && !s->rtc.tm.tm_min)
            s->status |= 1 << 8;				/* RTCTMR */
        else if (!s->rtc.tm.tm_hour)
            s->status |= 1 << 8;				/* RTCTMR */
    } else
        s->status |= 1 << 8;					/* RTCTMR */
    if ((s->rtc.ctrl >> 1) & 1) {				/* RTC_AL_EN */
        if (s->rtc.alm_sec == 0)
            s->status |= 1 << 9;				/* RTCALM */
        /* TODO: wake-up */
    }
    if (s->rtc.next_comp <= 0) {
        s->rtc.next -= muldiv64((int16_t) s->rtc.comp, 1000, 0x8000);
        s->rtc.next_comp = 3600;
    }
    menelaus_update(s);
}

void menelaus_reset(i2c_slave *i2c)
{
    struct menelaus_s *s = (struct menelaus_s *) i2c;
    s->reg = 0x00;

    s->vcore[0] = 0x0c;	/* XXX: X-loader needs 0x8c? check!  */
    s->vcore[1] = 0x05;
    s->vcore[2] = 0x02;
    s->vcore[3] = 0x0c;
    s->vcore[4] = 0x03;
    s->dcdc[0] = 0x33;	/* Depends on wiring */
    s->dcdc[1] = 0x03;
    s->dcdc[2] = 0x00;
    s->ldo[0] = 0x95;
    s->ldo[1] = 0x7e;
    s->ldo[2] = 0x00;
    s->ldo[3] = 0x00;	/* Depends on wiring */
    s->ldo[4] = 0x03;	/* Depends on wiring */
    s->ldo[5] = 0x00;
    s->ldo[6] = 0x00;
    s->ldo[7] = 0x00;
    s->sleep[0] = 0x00;
    s->sleep[1] = 0x00;
    s->osc = 0x01;
    s->detect = 0x09;
    s->mask = 0x0fff;
    s->status = 0;
    s->dir = 0x07;
    s->outputs = 0x00;
    s->bbsms = 0x00;
    s->pull[0] = 0x00;
    s->pull[1] = 0x00;
    s->pull[2] = 0x00;
    s->pull[3] = 0x00;
    s->mmc_ctrl[0] = 0x03;
    s->mmc_ctrl[1] = 0xc0;
    s->mmc_ctrl[2] = 0x00;
    s->mmc_debounce = 0x05;

    if (s->rtc.ctrl & 1)
        menelaus_rtc_stop(s);
    s->rtc.ctrl = 0x00;
    s->rtc.comp = 0x0000;
    s->rtc.next = 1000;
    s->rtc.sec_offset = 0;
    s->rtc.next_comp = 1800;
    s->rtc.alm_sec = 1800;
    s->rtc.alm.tm_sec = 0x00;
    s->rtc.alm.tm_min = 0x00;
    s->rtc.alm.tm_hour = 0x00;
    s->rtc.alm.tm_mday = 0x01;
    s->rtc.alm.tm_mon = 0x00;
    s->rtc.alm.tm_year = 2004;
    menelaus_update(s);
}

static inline uint8_t to_bcd(int val)
{
    return ((val / 10) << 4) | (val % 10);
}

static inline int from_bcd(uint8_t val)
{
    return ((val >> 4) * 10) + (val & 0x0f);
}

static void menelaus_gpio_set(void *opaque, int line, int level)
{
    struct menelaus_s *s = (struct menelaus_s *) opaque;

    /* No interrupt generated */
    s->inputs &= ~(1 << line);
    s->inputs |= level << line;
}

static void menelaus_pwrbtn_set(void *opaque, int line, int level)
{
    struct menelaus_s *s = (struct menelaus_s *) opaque;

    if (!s->pwrbtn_state && level) {
        s->status |= 1 << 11;					/* PSHBTN */
        menelaus_update(s);
    }
    s->pwrbtn_state = level;
}

#define MENELAUS_REV		0x01
#define MENELAUS_VCORE_CTRL1	0x02
#define MENELAUS_VCORE_CTRL2	0x03
#define MENELAUS_VCORE_CTRL3	0x04
#define MENELAUS_VCORE_CTRL4	0x05
#define MENELAUS_VCORE_CTRL5	0x06
#define MENELAUS_DCDC_CTRL1	0x07
#define MENELAUS_DCDC_CTRL2	0x08
#define MENELAUS_DCDC_CTRL3	0x09
#define MENELAUS_LDO_CTRL1	0x0a
#define MENELAUS_LDO_CTRL2	0x0b
#define MENELAUS_LDO_CTRL3	0x0c
#define MENELAUS_LDO_CTRL4	0x0d
#define MENELAUS_LDO_CTRL5	0x0e
#define MENELAUS_LDO_CTRL6	0x0f
#define MENELAUS_LDO_CTRL7	0x10
#define MENELAUS_LDO_CTRL8	0x11
#define MENELAUS_SLEEP_CTRL1	0x12
#define MENELAUS_SLEEP_CTRL2	0x13
#define MENELAUS_DEVICE_OFF	0x14
#define MENELAUS_OSC_CTRL	0x15
#define MENELAUS_DETECT_CTRL	0x16
#define MENELAUS_INT_MASK1	0x17
#define MENELAUS_INT_MASK2	0x18
#define MENELAUS_INT_STATUS1	0x19
#define MENELAUS_INT_STATUS2	0x1a
#define MENELAUS_INT_ACK1	0x1b
#define MENELAUS_INT_ACK2	0x1c
#define MENELAUS_GPIO_CTRL	0x1d
#define MENELAUS_GPIO_IN	0x1e
#define MENELAUS_GPIO_OUT	0x1f
#define MENELAUS_BBSMS		0x20
#define MENELAUS_RTC_CTRL	0x21
#define MENELAUS_RTC_UPDATE	0x22
#define MENELAUS_RTC_SEC	0x23
#define MENELAUS_RTC_MIN	0x24
#define MENELAUS_RTC_HR		0x25
#define MENELAUS_RTC_DAY	0x26
#define MENELAUS_RTC_MON	0x27
#define MENELAUS_RTC_YR		0x28
#define MENELAUS_RTC_WKDAY	0x29
#define MENELAUS_RTC_AL_SEC	0x2a
#define MENELAUS_RTC_AL_MIN	0x2b
#define MENELAUS_RTC_AL_HR	0x2c
#define MENELAUS_RTC_AL_DAY	0x2d
#define MENELAUS_RTC_AL_MON	0x2e
#define MENELAUS_RTC_AL_YR	0x2f
#define MENELAUS_RTC_COMP_MSB	0x30
#define MENELAUS_RTC_COMP_LSB	0x31
#define MENELAUS_S1_PULL_EN	0x32
#define MENELAUS_S1_PULL_DIR	0x33
#define MENELAUS_S2_PULL_EN	0x34
#define MENELAUS_S2_PULL_DIR	0x35
#define MENELAUS_MCT_CTRL1	0x36
#define MENELAUS_MCT_CTRL2	0x37
#define MENELAUS_MCT_CTRL3	0x38
#define MENELAUS_MCT_PIN_ST	0x39
#define MENELAUS_DEBOUNCE1	0x3a

static uint8_t menelaus_read(void *opaque, uint8_t addr)
{
    struct menelaus_s *s = (struct menelaus_s *) opaque;
    int reg = 0;

    switch (addr) {
    case MENELAUS_REV:
        return 0x22;

    case MENELAUS_VCORE_CTRL5: reg ++;
    case MENELAUS_VCORE_CTRL4: reg ++;
    case MENELAUS_VCORE_CTRL3: reg ++;
    case MENELAUS_VCORE_CTRL2: reg ++;
    case MENELAUS_VCORE_CTRL1:
        return s->vcore[reg];

    case MENELAUS_DCDC_CTRL3: reg ++;
    case MENELAUS_DCDC_CTRL2: reg ++;
    case MENELAUS_DCDC_CTRL1:
        return s->dcdc[reg];

    case MENELAUS_LDO_CTRL8: reg ++;
    case MENELAUS_LDO_CTRL7: reg ++;
    case MENELAUS_LDO_CTRL6: reg ++;
    case MENELAUS_LDO_CTRL5: reg ++;
    case MENELAUS_LDO_CTRL4: reg ++;
    case MENELAUS_LDO_CTRL3: reg ++;
    case MENELAUS_LDO_CTRL2: reg ++;
    case MENELAUS_LDO_CTRL1:
        return s->ldo[reg];

    case MENELAUS_SLEEP_CTRL2: reg ++;
    case MENELAUS_SLEEP_CTRL1:
        return s->sleep[reg];

    case MENELAUS_DEVICE_OFF:
        return 0;

    case MENELAUS_OSC_CTRL:
        return s->osc | (1 << 7);			/* CLK32K_GOOD */

    case MENELAUS_DETECT_CTRL:
        return s->detect;

    case MENELAUS_INT_MASK1:
        return (s->mask >> 0) & 0xff;
    case MENELAUS_INT_MASK2:
        return (s->mask >> 8) & 0xff;

    case MENELAUS_INT_STATUS1:
        return (s->status >> 0) & 0xff;
    case MENELAUS_INT_STATUS2:
        return (s->status >> 8) & 0xff;

    case MENELAUS_INT_ACK1:
    case MENELAUS_INT_ACK2:
        return 0;

    case MENELAUS_GPIO_CTRL:
        return s->dir;
    case MENELAUS_GPIO_IN:
        return s->inputs | (~s->dir & s->outputs);
    case MENELAUS_GPIO_OUT:
        return s->outputs;

    case MENELAUS_BBSMS:
        return s->bbsms;

    case MENELAUS_RTC_CTRL:
        return s->rtc.ctrl;
    case MENELAUS_RTC_UPDATE:
        return 0x00;
    case MENELAUS_RTC_SEC:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_sec);
    case MENELAUS_RTC_MIN:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_min);
    case MENELAUS_RTC_HR:
        menelaus_rtc_update(s);
        if ((s->rtc.ctrl >> 2) & 1)			/* MODE12_n24 */
            return to_bcd((s->rtc.tm.tm_hour % 12) + 1) |
                    (!!(s->rtc.tm.tm_hour >= 12) << 7);	/* PM_nAM */
        else
            return to_bcd(s->rtc.tm.tm_hour);
    case MENELAUS_RTC_DAY:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_mday);
    case MENELAUS_RTC_MON:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_mon + 1);
    case MENELAUS_RTC_YR:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_year - 2000);
    case MENELAUS_RTC_WKDAY:
        menelaus_rtc_update(s);
        return to_bcd(s->rtc.tm.tm_wday);
    case MENELAUS_RTC_AL_SEC:
        return to_bcd(s->rtc.alm.tm_sec);
    case MENELAUS_RTC_AL_MIN:
        return to_bcd(s->rtc.alm.tm_min);
    case MENELAUS_RTC_AL_HR:
        if ((s->rtc.ctrl >> 2) & 1)			/* MODE12_n24 */
            return to_bcd((s->rtc.alm.tm_hour % 12) + 1) |
                    (!!(s->rtc.alm.tm_hour >= 12) << 7);/* AL_PM_nAM */
        else
            return to_bcd(s->rtc.alm.tm_hour);
    case MENELAUS_RTC_AL_DAY:
        return to_bcd(s->rtc.alm.tm_mday);
    case MENELAUS_RTC_AL_MON:
        return to_bcd(s->rtc.alm.tm_mon + 1);
    case MENELAUS_RTC_AL_YR:
        return to_bcd(s->rtc.alm.tm_year - 2000);
    case MENELAUS_RTC_COMP_MSB:
        return (s->rtc.comp >> 8) & 0xff;
    case MENELAUS_RTC_COMP_LSB:
        return (s->rtc.comp >> 0) & 0xff;

    case MENELAUS_S1_PULL_EN:
        return s->pull[0];
    case MENELAUS_S1_PULL_DIR:
        return s->pull[1];
    case MENELAUS_S2_PULL_EN:
        return s->pull[2];
    case MENELAUS_S2_PULL_DIR:
        return s->pull[3];

    case MENELAUS_MCT_CTRL3: reg ++;
    case MENELAUS_MCT_CTRL2: reg ++;
    case MENELAUS_MCT_CTRL1:
        return s->mmc_ctrl[reg];
    case MENELAUS_MCT_PIN_ST:
        /* TODO: return the real Card Detect */
        return 0;
    case MENELAUS_DEBOUNCE1:
        return s->mmc_debounce;

    default:
#ifdef VERBOSE
        printf("%s: unknown register %02x\n", __FUNCTION__, addr);
#endif
        break;
    }
    return 0;
}

static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
{
    struct menelaus_s *s = (struct menelaus_s *) opaque;
    int line;
    int reg = 0;
    struct tm tm;

    switch (addr) {
    case MENELAUS_VCORE_CTRL1:
        s->vcore[0] = (value & 0xe) | MIN(value & 0x1f, 0x12);
        break;
    case MENELAUS_VCORE_CTRL2:
        s->vcore[1] = value;
        break;
    case MENELAUS_VCORE_CTRL3:
        s->vcore[2] = MIN(value & 0x1f, 0x12);
        break;
    case MENELAUS_VCORE_CTRL4:
        s->vcore[3] = MIN(value & 0x1f, 0x12);
        break;
    case MENELAUS_VCORE_CTRL5:
        s->vcore[4] = value & 3;
        /* XXX
         * auto set to 3 on M_Active, nRESWARM
         * auto set to 0 on M_WaitOn, M_Backup
         */
        break;

    case MENELAUS_DCDC_CTRL1:
        s->dcdc[0] = value & 0x3f;
        break;
    case MENELAUS_DCDC_CTRL2:
        s->dcdc[1] = value & 0x07;
        /* XXX
         * auto set to 3 on M_Active, nRESWARM
         * auto set to 0 on M_WaitOn, M_Backup
         */
        break;