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historical/m0-applesillicon.git/xnu-qemu-arm64-5.1.0/hw/rtc/twl92230.c

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phht hahahahaah
2024-01-16 11:20:27 -06:00
/*
* TI TWL92230C energy-management companion device for the OMAP24xx.
* Aka. Menelaus (N4200 MENELAUS1_V2.2)
*
* Copyright (C) 2008 Nokia Corporation
* Written by Andrzej Zaborowski <andrew@openedhand.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/timer.h"
#include "hw/i2c/i2c.h"
#include "hw/irq.h"
#include "migration/qemu-file-types.h"
#include "migration/vmstate.h"
#include "sysemu/sysemu.h"
#include "qemu/bcd.h"
#include "qemu/module.h"
#define VERBOSE 1
#define TYPE_TWL92230 "twl92230"
#define TWL92230(obj) OBJECT_CHECK(MenelausState, (obj), TYPE_TWL92230)
typedef struct MenelausState {
I2CSlave parent_obj;
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_tm;
int64_t next;
struct tm tm;
struct tm new;
struct tm alm;
int sec_offset;
int alm_sec;
int next_comp;
} rtc;
uint16_t rtc_next_vmstate;
qemu_irq out[4];
uint8_t pwrbtn_state;
} MenelausState;
static inline void menelaus_update(MenelausState *s)
{
qemu_set_irq(s->out[3], s->status & ~s->mask);
}
static inline void menelaus_rtc_start(MenelausState *s)
{
s->rtc.next += qemu_clock_get_ms(rtc_clock);
timer_mod(s->rtc.hz_tm, s->rtc.next);
}
static inline void menelaus_rtc_stop(MenelausState *s)
{
timer_del(s->rtc.hz_tm);
s->rtc.next -= qemu_clock_get_ms(rtc_clock);
if (s->rtc.next < 1)
s->rtc.next = 1;
}
static void menelaus_rtc_update(MenelausState *s)
{
qemu_get_timedate(&s->rtc.tm, s->rtc.sec_offset);
}
static void menelaus_alm_update(MenelausState *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)
{
MenelausState *s = (MenelausState *) opaque;
s->rtc.next_comp --;
s->rtc.alm_sec --;
s->rtc.next += 1000;
timer_mod(s->rtc.hz_tm, 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);
}
static void menelaus_reset(I2CSlave *i2c)
{
MenelausState *s = TWL92230(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 void menelaus_gpio_set(void *opaque, int line, int level)
{
MenelausState *s = (MenelausState *) opaque;
if (line < 3) {
/* No interrupt generated */
s->inputs &= ~(1 << line);
s->inputs |= level << line;
return;
}
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)
{
MenelausState *s = (MenelausState *) 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", __func__, addr);
#endif
break;
}
return 0;
}
static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
{
MenelausState *s = (MenelausState *) 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;
case MENELAUS_DCDC_CTRL3:
s->dcdc[2] = value & 0x07;
break;
case MENELAUS_LDO_CTRL1:
s->ldo[0] = value;
break;
case MENELAUS_LDO_CTRL2:
s->ldo[1] = value & 0x7f;
/* XXX
* auto set to 0x7e on M_WaitOn, M_Backup
*/
break;
case MENELAUS_LDO_CTRL3:
s->ldo[2] = value & 3;
/* XXX
* auto set to 3 on M_Active, nRESWARM
* auto set to 0 on M_WaitOn, M_Backup
*/
break;
case MENELAUS_LDO_CTRL4:
s->ldo[3] = value & 3;
/* XXX
* auto set to 3 on M_Active, nRESWARM
* auto set to 0 on M_WaitOn, M_Backup
*/
break;
case MENELAUS_LDO_CTRL5:
s->ldo[4] = value & 3;
/* XXX
* auto set to 3 on M_Active, nRESWARM
* auto set to 0 on M_WaitOn, M_Backup
*/
break;
case MENELAUS_LDO_CTRL6:
s->ldo[5] = value & 3;
break;
case MENELAUS_LDO_CTRL7:
s->ldo[6] = value & 3;
break;
case MENELAUS_LDO_CTRL8:
s->ldo[7] = value & 3;
break;
case MENELAUS_SLEEP_CTRL2: reg ++;
case MENELAUS_SLEEP_CTRL1:
s->sleep[reg] = value;
break;
case MENELAUS_DEVICE_OFF:
if (value & 1) {
menelaus_reset(I2C_SLAVE(s));
}
break;
case MENELAUS_OSC_CTRL:
s->osc = value & 7;
break;
case MENELAUS_DETECT_CTRL:
s->detect = value & 0x7f;
break;
case MENELAUS_INT_MASK1:
s->mask &= 0xf00;
s->mask |= value << 0;
menelaus_update(s);
break;
case MENELAUS_INT_MASK2:
s->mask &= 0x0ff;
s->mask |= value << 8;
menelaus_update(s);
break;
case MENELAUS_INT_ACK1:
s->status &= ~(((uint16_t) value) << 0);
menelaus_update(s);
break;
case MENELAUS_INT_ACK2:
s->status &= ~(((uint16_t) value) << 8);
menelaus_update(s);
break;
case MENELAUS_GPIO_CTRL:
for (line = 0; line < 3; line ++) {
if (((s->dir ^ value) >> line) & 1) {
qemu_set_irq(s->out[line],
((s->outputs & ~s->dir) >> line) & 1);
}
}
s->dir = value & 0x67;
break;
case MENELAUS_GPIO_OUT:
for (line = 0; line < 3; line ++) {
if ((((s->outputs ^ value) & ~s->dir) >> line) & 1) {
qemu_set_irq(s->out[line], (s->outputs >> line) & 1);
}
}
s->outputs = value & 0x07;
break;
case MENELAUS_BBSMS:
s->bbsms = 0x0d;
break;
case MENELAUS_RTC_CTRL:
if ((s->rtc.ctrl ^ value) & 1) { /* RTC_EN */
if (value & 1)
menelaus_rtc_start(s);
else
menelaus_rtc_stop(s);
}
s->rtc.ctrl = value & 0x1f;
menelaus_alm_update(s);
break;
case MENELAUS_RTC_UPDATE:
menelaus_rtc_update(s);
memcpy(&tm, &s->rtc.tm, sizeof(tm));
switch (value & 0xf) {
case 0:
break;
case 1:
tm.tm_sec = s->rtc.new.tm_sec;
break;
case 2:
tm.tm_min = s->rtc.new.tm_min;
break;
case 3:
if (s->rtc.new.tm_hour > 23)
goto rtc_badness;
tm.tm_hour = s->rtc.new.tm_hour;
break;
case 4:
if (s->rtc.new.tm_mday < 1)
goto rtc_badness;
/* TODO check range */
tm.tm_mday = s->rtc.new.tm_mday;
break;
case 5:
if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
goto rtc_badness;
tm.tm_mon = s->rtc.new.tm_mon;
break;
case 6:
tm.tm_year = s->rtc.new.tm_year;
break;
case 7:
/* TODO set .tm_mday instead */
tm.tm_wday = s->rtc.new.tm_wday;
break;
case 8:
if (s->rtc.new.tm_hour > 23)
goto rtc_badness;
if (s->rtc.new.tm_mday < 1)
goto rtc_badness;
if (s->rtc.new.tm_mon < 0 || s->rtc.new.tm_mon > 11)
goto rtc_badness;
tm.tm_sec = s->rtc.new.tm_sec;
tm.tm_min = s->rtc.new.tm_min;
tm.tm_hour = s->rtc.new.tm_hour;
tm.tm_mday = s->rtc.new.tm_mday;
tm.tm_mon = s->rtc.new.tm_mon;
tm.tm_year = s->rtc.new.tm_year;
break;
rtc_badness:
default:
fprintf(stderr, "%s: bad RTC_UPDATE value %02x\n",
__func__, value);
s->status |= 1 << 10; /* RTCERR */
menelaus_update(s);
}
s->rtc.sec_offset = qemu_timedate_diff(&tm);
break;
case MENELAUS_RTC_SEC:
s->rtc.tm.tm_sec = from_bcd(value & 0x7f);
break;
case MENELAUS_RTC_MIN:
s->rtc.tm.tm_min = from_bcd(value & 0x7f);
break;
case MENELAUS_RTC_HR:
s->rtc.tm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
from_bcd(value & 0x3f);
break;
case MENELAUS_RTC_DAY:
s->rtc.tm.tm_mday = from_bcd(value);
break;
case MENELAUS_RTC_MON:
s->rtc.tm.tm_mon = MAX(1, from_bcd(value)) - 1;
break;
case MENELAUS_RTC_YR:
s->rtc.tm.tm_year = 2000 + from_bcd(value);
break;
case MENELAUS_RTC_WKDAY:
s->rtc.tm.tm_mday = from_bcd(value);
break;
case MENELAUS_RTC_AL_SEC:
s->rtc.alm.tm_sec = from_bcd(value & 0x7f);
menelaus_alm_update(s);
break;
case MENELAUS_RTC_AL_MIN:
s->rtc.alm.tm_min = from_bcd(value & 0x7f);
menelaus_alm_update(s);
break;
case MENELAUS_RTC_AL_HR:
s->rtc.alm.tm_hour = (s->rtc.ctrl & (1 << 2)) ? /* MODE12_n24 */
MIN(from_bcd(value & 0x3f), 12) + ((value >> 7) ? 11 : -1) :
from_bcd(value & 0x3f);
menelaus_alm_update(s);
break;
case MENELAUS_RTC_AL_DAY:
s->rtc.alm.tm_mday = from_bcd(value);
menelaus_alm_update(s);
break;
case MENELAUS_RTC_AL_MON:
s->rtc.alm.tm_mon = MAX(1, from_bcd(value)) - 1;
menelaus_alm_update(s);
break;
case MENELAUS_RTC_AL_YR:
s->rtc.alm.tm_year = 2000 + from_bcd(value);
menelaus_alm_update(s);
break;
case MENELAUS_RTC_COMP_MSB:
s->rtc.comp &= 0xff;
s->rtc.comp |= value << 8;
break;
case MENELAUS_RTC_COMP_LSB:
s->rtc.comp &= 0xff << 8;
s->rtc.comp |= value;
break;
case MENELAUS_S1_PULL_EN:
s->pull[0] = value;
break;
case MENELAUS_S1_PULL_DIR:
s->pull[1] = value & 0x1f;
break;
case MENELAUS_S2_PULL_EN:
s->pull[2] = value;
break;
case MENELAUS_S2_PULL_DIR:
s->pull[3] = value & 0x1f;
break;
case MENELAUS_MCT_CTRL1:
s->mmc_ctrl[0] = value & 0x7f;
break;
case MENELAUS_MCT_CTRL2:
s->mmc_ctrl[1] = value;
/* TODO update Card Detect interrupts */
break;
case MENELAUS_MCT_CTRL3:
s->mmc_ctrl[2] = value & 0xf;
break;
case MENELAUS_DEBOUNCE1:
s->mmc_debounce = value & 0x3f;
break;
default:
#ifdef VERBOSE
printf("%s: unknown register %02x\n", __func__, addr);
#endif
}
}
static int menelaus_event(I2CSlave *i2c, enum i2c_event event)
{
MenelausState *s = TWL92230(i2c);
if (event == I2C_START_SEND)
s->firstbyte = 1;
return 0;
}
static int menelaus_tx(I2CSlave *i2c, uint8_t data)
{
MenelausState *s = TWL92230(i2c);
/* Interpret register address byte */
if (s->firstbyte) {
s->reg = data;
s->firstbyte = 0;
} else
menelaus_write(s, s->reg ++, data);
return 0;
}
static uint8_t menelaus_rx(I2CSlave *i2c)
{
MenelausState *s = TWL92230(i2c);
return menelaus_read(s, s->reg ++);
}
/* Save restore 32 bit int as uint16_t
This is a Big hack, but it is how the old state did it.
Or we broke compatibility in the state, or we can't use struct tm
*/
static int get_int32_as_uint16(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
{
int *v = pv;
*v = qemu_get_be16(f);
return 0;
}
static int put_int32_as_uint16(QEMUFile *f, void *pv, size_t size,
const VMStateField *field, QJSON *vmdesc)
{
int *v = pv;
qemu_put_be16(f, *v);
return 0;
}
static const VMStateInfo vmstate_hack_int32_as_uint16 = {
.name = "int32_as_uint16",
.get = get_int32_as_uint16,
.put = put_int32_as_uint16,
};
#define VMSTATE_UINT16_HACK(_f, _s) \
VMSTATE_SINGLE(_f, _s, 0, vmstate_hack_int32_as_uint16, int32_t)
static const VMStateDescription vmstate_menelaus_tm = {
.name = "menelaus_tm",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT16_HACK(tm_sec, struct tm),
VMSTATE_UINT16_HACK(tm_min, struct tm),
VMSTATE_UINT16_HACK(tm_hour, struct tm),
VMSTATE_UINT16_HACK(tm_mday, struct tm),
VMSTATE_UINT16_HACK(tm_min, struct tm),
VMSTATE_UINT16_HACK(tm_year, struct tm),
VMSTATE_END_OF_LIST()
}
};
static int menelaus_pre_save(void *opaque)
{
MenelausState *s = opaque;
/* Should be <= 1000 */
s->rtc_next_vmstate = s->rtc.next - qemu_clock_get_ms(rtc_clock);
return 0;
}
static int menelaus_post_load(void *opaque, int version_id)
{
MenelausState *s = opaque;
if (s->rtc.ctrl & 1) /* RTC_EN */
menelaus_rtc_stop(s);
s->rtc.next = s->rtc_next_vmstate;
menelaus_alm_update(s);
menelaus_update(s);
if (s->rtc.ctrl & 1) /* RTC_EN */
menelaus_rtc_start(s);
return 0;
}
static const VMStateDescription vmstate_menelaus = {
.name = "menelaus",
.version_id = 0,
.minimum_version_id = 0,
.pre_save = menelaus_pre_save,
.post_load = menelaus_post_load,
.fields = (VMStateField[]) {
VMSTATE_INT32(firstbyte, MenelausState),
VMSTATE_UINT8(reg, MenelausState),
VMSTATE_UINT8_ARRAY(vcore, MenelausState, 5),
VMSTATE_UINT8_ARRAY(dcdc, MenelausState, 3),
VMSTATE_UINT8_ARRAY(ldo, MenelausState, 8),
VMSTATE_UINT8_ARRAY(sleep, MenelausState, 2),
VMSTATE_UINT8(osc, MenelausState),
VMSTATE_UINT8(detect, MenelausState),
VMSTATE_UINT16(mask, MenelausState),
VMSTATE_UINT16(status, MenelausState),
VMSTATE_UINT8(dir, MenelausState),
VMSTATE_UINT8(inputs, MenelausState),
VMSTATE_UINT8(outputs, MenelausState),
VMSTATE_UINT8(bbsms, MenelausState),
VMSTATE_UINT8_ARRAY(pull, MenelausState, 4),
VMSTATE_UINT8_ARRAY(mmc_ctrl, MenelausState, 3),
VMSTATE_UINT8(mmc_debounce, MenelausState),
VMSTATE_UINT8(rtc.ctrl, MenelausState),
VMSTATE_UINT16(rtc.comp, MenelausState),
VMSTATE_UINT16(rtc_next_vmstate, MenelausState),
VMSTATE_STRUCT(rtc.new, MenelausState, 0, vmstate_menelaus_tm,
struct tm),
VMSTATE_STRUCT(rtc.alm, MenelausState, 0, vmstate_menelaus_tm,
struct tm),
VMSTATE_UINT8(pwrbtn_state, MenelausState),
VMSTATE_I2C_SLAVE(parent_obj, MenelausState),
VMSTATE_END_OF_LIST()
}
};
static void twl92230_realize(DeviceState *dev, Error **errp)
{
MenelausState *s = TWL92230(dev);
s->rtc.hz_tm = timer_new_ms(rtc_clock, menelaus_rtc_hz, s);
/* Three output pins plus one interrupt pin. */
qdev_init_gpio_out(dev, s->out, 4);
/* Three input pins plus one power-button pin. */
qdev_init_gpio_in(dev, menelaus_gpio_set, 4);
menelaus_reset(I2C_SLAVE(dev));
}
static void twl92230_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
dc->realize = twl92230_realize;
sc->event = menelaus_event;
sc->recv = menelaus_rx;
sc->send = menelaus_tx;
dc->vmsd = &vmstate_menelaus;
}
static const TypeInfo twl92230_info = {
.name = TYPE_TWL92230,
.parent = TYPE_I2C_SLAVE,
.instance_size = sizeof(MenelausState),
.class_init = twl92230_class_init,
};
static void twl92230_register_types(void)
{
type_register_static(&twl92230_info);
}
type_init(twl92230_register_types)
Reference in a new issue Copy permalink