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Hi Phil and Be= rnhard,

I would like to apologize for not including you in the initial email r= egarding the RTC PCF8563 patch. This was an oversight on my part, and I reg= ret any inconvenience this may have caused.

=A7=B0=A7=E4: Ilya Chichk= ov
=A7=B0=A7=E4=A7=E1=A7=E2=A7=D1=A7=D3=A7=DD=A7=D6=A7=DF=A7=E0: 10 =A7= =DE=A7=D1=A7=E2=A7=E4=A7=D1 2025 =A7=D4. 14:36:34
=A7=AC=A7=E0=A7=DE=A7=E5: Paolo Bonzini; Peter Maydell
=A7=AC=A7=E0=A7=E1=A7=DA=A7=F1: qemu-devel@nongnu.org; nikita.shubin= @maquefel.me; Ilya Chichkov
=A7=B4=A7=D6=A7=DE=A7=D1: [PATCH v2] hw/rtc: Add RTC PCF8563 module<= /font>
 
Add PCF8563 a real-time clock with calendar and I2= C interface.
This commit adds support for interfacing with it and implements
functionality of setting timer, alarm, reading and writing time.

Signed-off-by: Ilya Chichkov <i.chichkov@yadro.com>
---
v1->v2
Phil:
- Add hot reset
- Fix trace message
- Add testing coverage with qtest

Bernhard:
- Move datasheet link to source code top comment section
- Fix typos
- Update licence identifier to SPDX
- Remove unused import libraries
- Change OBJECT_CHECK to OBJECT_DECLARE_SIMPLE_TYPE
- Remove outdated comment
- Rename i2c to parent_obj
- Moved get_time inside capture_time function that is
  called only when I2C request starts
- Add fields inside VMStateDescription
- Removed pcf8563_realize
- Change type_init to DEFINE_TYPES
---
 hw/rtc/Kconfig       |   5 &#= 43;
 hw/rtc/meson.build   |   1 +
 hw/rtc/pcf8563_rtc.c | 740 ++++++++&#= 43;++++++++++++++&#= 43;++++++++++++++&#= 43;++++
 hw/rtc/trace-events  |  12 +
 4 files changed, 758 insertions(+)
 create mode 100644 hw/rtc/pcf8563_rtc.c

diff --git a/hw/rtc/Kconfig b/hw/rtc/Kconfig
index b90c2e510a..4e7a1f75ef 100644
--- a/hw/rtc/Kconfig
+++ b/hw/rtc/Kconfig
@@ -27,5 +27,10 @@ config GOLDFISH_RTC
 config LS7A_RTC
     bool
 
+config PCF8563_RTC
+    bool
+    depends on I2C
+    default y if I2C_DEVICES
+
 config STM32_RTC
     bool
\ No newline at end of file
diff --git a/hw/rtc/meson.build b/hw/rtc/meson.build
index b6bb7436c7..6180ffc6d9 100644
--- a/hw/rtc/meson.build
+++ b/hw/rtc/meson.build
@@ -13,4 +13,5 @@ system_ss.add(when: 'CONFIG_GOLDFISH_RTC', if_true: f= iles('goldfish_rtc.c'))
 system_ss.add(when: 'CONFIG_LS7A_RTC', if_true: files('ls7a_rtc.c'))<= br>  system_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-= rtc.c'))
 system_ss.add(when: 'CONFIG_MC146818RTC', if_true: files('mc146818rtc= .c'))
+system_ss.add(when: 'CONFIG_PCF8563_RTC', if_true: files('pcf8563_rtc.= c'))
 system_ss.add(when: 'CONFIG_STM32_RTC', if_true: files('stm32-rtc.c')= )
diff --git a/hw/rtc/pcf8563_rtc.c b/hw/rtc/pcf8563_rtc.c
new file mode 100644
index 0000000000..195b697598
--- /dev/null
+++ b/hw/rtc/pcf8563_rtc.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Real-time clock/calendar PCF8563 with I2C interface.
+ *
+ * Datasheet: https://www.nxp.com/docs/en/data-sheet/PCF8563.pdf
+ *
+ * Author (c) 2024 Ilya Chichkov <i.chichkov@yadro.com>
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/register.h"
+#include "hw/registerfields.h"
+#include "hw/irq.h"
+#include "qemu/bitops.h"
+#include "hw/qdev-properties.h"
+#include "qemu/timer.h"
+#include "hw/i2c/i2c.h"
+#include "qemu/bcd.h"
+#include "qom/object.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/rtc.h"
+#include "migration/vmstate.h"
+#include "qapi/visitor.h"
+
+#include "trace.h"
+
+#define TYPE_PCF8563 "pcf8563"
+OBJECT_DECLARE_SIMPLE_TYPE(Pcf8563State, PCF8563)
+
+#define  PCF8563_CS1       &nb= sp;    0x00
+#define  PCF8563_CS2       &nb= sp;    0x01
+#define  PCF8563_VLS       &nb= sp;    0x02
+#define  PCF8563_MINUTES       = ; 0x03
+#define  PCF8563_HOURS       &= nbsp;  0x04
+#define  PCF8563_DAYS       &n= bsp;   0x05
+#define  PCF8563_WEEKDAYS       0x0= 6
+#define  PCF8563_CENTURY_MONTHS 0x07
+#define  PCF8563_YEARS       &= nbsp;  0x08
+#define  PCF8563_MINUTE_A       0x0= 9
+#define  PCF8563_HOUR_A       =   0x0A
+#define  PCF8563_DAY_A       &= nbsp;  0x0B
+#define  PCF8563_WEEKDAY_A      0x0C
+#define  PCF8563_CLKOUT_CTL     0x0D
+#define  PCF8563_TIMER_CTL      0x0E
+#define  PCF8563_TIMER       &= nbsp;  0x0F
+
+#define MINUTES_IN_HOUR 60
+#define HOURS_IN_DAY 24
+#define DAYS_IN_MONTH 31
+#define DAYS_IN_WEEK 7
+
+REG8(PCF8563_CS1, 0x00)
+    FIELD(PCF8563_CS1, RSVD0,  0,  3)
+    FIELD(PCF8563_CS1, TESTC,  3,  1)
+    FIELD(PCF8563_CS1, RSVD1,  4,  1)
+    FIELD(PCF8563_CS1, STOP,   5,  1) +    FIELD(PCF8563_CS1, RSVD2,  6,  1)
+    FIELD(PCF8563_CS1, TEST1,  7,  1)
+
+REG8(PCF8563_CS2, 0x01)
+    FIELD(PCF8563_CS2, TIE,   0,  1)
+    FIELD(PCF8563_CS2, AIE,   1,  1)
+    FIELD(PCF8563_CS2, TF,    2,  1= )
+    FIELD(PCF8563_CS2, AF,    3,  1= )
+    FIELD(PCF8563_CS2, TI_TP, 4,  1)
+    FIELD(PCF8563_CS2, RSVD,  5,  3)
+
+REG8(PCF8563_VLS, 0x02)
+    FIELD(PCF8563_VLS, SECONDS,  0,  7)
+    FIELD(PCF8563_VLS, VL,     = ;  7,  1)
+
+REG8(PCF8563_MINUTES, 0x03)
+    FIELD(PCF8563_MINUTES, MINUTES, 0,  7)
+    FIELD(PCF8563_MINUTES, RSVD,    7,&n= bsp; 1)
+
+REG8(PCF8563_HOURS, 0x04)
+    FIELD(PCF8563_HOURS, HOURS, 0,  6)
+    FIELD(PCF8563_HOURS, RSVD,  6,  2)
+
+REG8(PCF8563_DAYS, 0x05)
+    FIELD(PCF8563_DAYS, DAYS, 0,  6)
+    FIELD(PCF8563_DAYS, RSVD, 6,  2)
+
+REG8(PCF8563_WEEKDAYS, 0x06)
+    FIELD(PCF8563_WEEKDAYS, WEEKDAYS, 0,  3)
+    FIELD(PCF8563_WEEKDAYS, RSVD,   &nbs= p; 3,  5)
+
+REG8(PCF8563_CENTURY_MONTHS, 0x07)
+    FIELD(PCF8563_CENTURY_MONTHS, MONTHS,  0, = ; 5)
+    FIELD(PCF8563_CENTURY_MONTHS, RSVD,  &nbs= p; 5,  2)
+    FIELD(PCF8563_CENTURY_MONTHS, CENTURY, 7,  1)<= br> +
+REG8(PCF8563_YEARS, 0x08)
+    FIELD(PCF8563_YEARS, YEARS, 0,  8)
+
+REG8(PCF8563_MINUTE_A, 0x09)
+    FIELD(PCF8563_MINUTE_A, MINUTE_A, 0,  7)
+    FIELD(PCF8563_MINUTE_A, AE_M,   &nbs= p; 7,  1)
+
+REG8(PCF8563_HOUR_A, 0x0A)
+    FIELD(PCF8563_HOUR_A, HOUR_A, 0,  7)
+    FIELD(PCF8563_HOUR_A, AE_H,   7,  1)=
+
+REG8(PCF8563_DAY_A, 0x0B)
+    FIELD(PCF8563_DAY_A, DAY_A,  0,  7)
+    FIELD(PCF8563_DAY_A, AE_D,   7,  1)<= br> +
+REG8(PCF8563_WEEKDAY_A, 0x0C)
+    FIELD(PCF8563_WEEKDAY_A, WEEKDAY_A, 0,  3)
+    FIELD(PCF8563_WEEKDAY_A, RSVD,   &nb= sp;  3,  4)
+    FIELD(PCF8563_WEEKDAY_A, AE_W,   &nb= sp;  7,  1)
+
+REG8(PCF8563_CLKOUT_CTL, 0x0D)
+    FIELD(PCF8563_CLKOUT_CTL, FD,   0,  = 2)
+    FIELD(PCF8563_CLKOUT_CTL, RSVD, 2,  5)
+    FIELD(PCF8563_CLKOUT_CTL, FE,   7,  = 1)
+
+REG8(PCF8563_TIMER_CTL, 0x0E)
+    FIELD(PCF8563_TIMER_CTL, TD,   0,  2= )
+    FIELD(PCF8563_TIMER_CTL, RSVD, 2,  5)
+    FIELD(PCF8563_TIMER_CTL, TE,   7,  1= )
+
+REG8(PCF8563_TIMER, 0x0F)
+    FIELD(PCF8563_TIMER, TIMER, 0,  8)
+
+typedef struct Pcf8563State {
+    I2CSlave parent_obj;
+
+    struct tm current_time;
+    qemu_irq irq;
+
+    uint8_t read_index;
+    uint8_t write_index;
+    uint8_t reg_addr;
+
+    /* Control and status */
+    uint8_t cs1;
+    uint8_t cs2;
+    /* Counters */
+    uint8_t vls;
+    uint8_t minutes;
+    uint8_t hours;
+    uint8_t days;
+    uint8_t weekdays;
+    uint8_t centure_months;
+    uint8_t years;
+    /* Alarm registers */
+    uint8_t minute_a;
+    uint8_t hour_a;
+    uint8_t day_a;
+    uint8_t weekday_a;
+    /* Timer control */
+    uint8_t clkout_ctl;
+    uint8_t timer_ctl;
+    uint8_t timer_cnt;
+
+    QEMUTimer *alarm_timer;
+    struct tm tm_alarm;
+    bool alarm_irq;
+    QEMUTimer *timer;
+    time_t time_offset;
+    time_t stop_time;
+    QEMUTimer *irq_gen_timer;
+} Pcf8563State;
+
+static uint16_t get_src_freq(Pcf8563State *s, bool *multiply)
+{
+    *multiply =3D false;
+    /* Select source clock frequency (Hz) */
+    switch (FIELD_EX8(s->timer_ctl, PCF8563_TIMER_CT= L, TD)) {
+    case 0:
+        return 4096;
+    case 1:
+        return 64;
+    case 2:
+        return 1;
+    case 3:
+        *multiply =3D true;
+        return 60;
+    default:
+        return 0;
+    }
+}
+
+static uint16_t get_irq_pulse_freq(Pcf8563State *s)
+{
+    if (s->timer_cnt > 1) {
+        switch (FIELD_EX8(s->tim= er_ctl, PCF8563_TIMER_CTL, TD)) {
+        case 0:
+            ret= urn 8192;
+        case 1:
+            ret= urn 128;
+        case 2:
+        case 3:
+            ret= urn 64;
+        default:
+            ret= urn 0;
+        }
+    } else {
+        if (FIELD_EX8(s->timer_c= tl, PCF8563_TIMER_CTL, TD) =3D=3D 0) {
+            ret= urn 4096;
+        }
+        return 64;
+    }
+
+}
+
+static void timer_irq(Pcf8563State *s)
+{
+    if (!FIELD_EX8(s->cs2, PCF8563_CS2, TIE)) {
+        return;
+    }
+
+    if (FIELD_EX8(s->cs2, PCF8563_CS2, TI_TP)) {
+        qemu_irq_pulse(s->irq);<= br> +
+        /* Start IRQ pulse generato= r */
+        uint64_t delay =3D s->ti= mer_cnt *
+           &nbs= p;            NANOSE= CONDS_PER_SECOND *
+           &nbs= p;            get_ir= q_pulse_freq(s);
+        timer_mod(s->irq_gen_tim= er,
+           &nbs= p;        qemu_clock_get_ns(QEMU_CLOCK_V= IRTUAL) + delay);
+    } else {
+        qemu_irq_raise(s->irq);<= br> +    }
+}
+
+static void alarm_irq(Pcf8563State *s)
+{
+    if (FIELD_EX8(s->cs2, PCF8563_CS2, AIE)) {
+        qemu_irq_raise(s->irq);<= br> +    }
+}
+
+static void set_alarm(Pcf8563State *s)
+{
+    uint64_t diff_sec =3D 0;
+    uint64_t diff_min =3D 0;
+    uint64_t diff_hour =3D 0;
+    uint64_t diff_day =3D 0;
+    uint64_t diff_wday =3D 0;
+    uint64_t delay =3D 0;
+    uint64_t now_cl =3D 0;
+    struct tm now;
+
+    bool is_min_en =3D !FIELD_EX8(s->minute_a, PCF85= 63_MINUTE_A, AE_M);
+    bool is_hour_en =3D !FIELD_EX8(s->hour_a, PCF856= 3_HOUR_A, AE_H);
+    bool is_day_en =3D !FIELD_EX8(s->day_a, PCF8563_= DAY_A, AE_D);
+    bool is_wday_en =3D !FIELD_EX8(s->weekday_a, PCF= 8563_WEEKDAY_A, AE_W);
+    if (!is_day_en && !is_wday_en && !i= s_hour_en && !is_min_en) {
+        if (s->alarm_timer) { +            tim= er_del(s->alarm_timer);
+        }
+        return;
+    }
+
+    qemu_get_timedate(&now, s->time_offset);
+
+    if (is_min_en) {
+        if (s->tm_alarm.tm_min &= gt; s->current_time.tm_min) {
+            dif= f_min =3D s->tm_alarm.tm_min - s->current_time.tm_min;
+        } else {
+            dif= f_min =3D (MINUTES_IN_HOUR -
+           &nbs= p;            s->= current_time.tm_min + s->tm_alarm.tm_min);
+        }
+    }
+
+    if (is_hour_en) {
+        if (s->tm_alarm.tm_hour = > s->current_time.tm_hour) {
+            dif= f_hour =3D s->tm_alarm.tm_hour - s->current_time.tm_hour;
+        } else {
+            dif= f_hour =3D (HOURS_IN_DAY -
+           &nbs= p;             = s->current_time.tm_hour + s->tm_alarm.tm_hour);
+        }
+    }
+
+    if (is_day_en) {
+        if (s->tm_alarm.tm_mday = > s->current_time.tm_mday) {
+            dif= f_day =3D s->tm_alarm.tm_mday - s->current_time.tm_mday;
+        } else {
+            dif= f_day =3D (DAYS_IN_MONTH -
+           &nbs= p;            s->= current_time.tm_mday + s->tm_alarm.tm_mday);
+        }
+    }
+
+    if (is_wday_en) {
+        if (s->tm_alarm.tm_wday = > s->current_time.tm_wday) {
+            dif= f_wday =3D s->tm_alarm.tm_wday - s->current_time.tm_wday;
+        } else {
+            dif= f_wday =3D (DAYS_IN_WEEK -
+           &nbs= p;             = s->current_time.tm_wday + s->tm_alarm.tm_wday);
+        }
+    }
+
+    diff_sec =3D (diff_min * 60) +
+           &nbs= p;   (diff_hour * 60 * 60) +
+           &nbs= p;   (diff_day * 24 * 60 * 60) +
+           &nbs= p;   (diff_wday * 24 * 60 * 60);
+    now_cl =3D muldiv64(qemu_clock_get_ns(rtc_clock), 1= , NANOSECONDS_PER_SECOND);
+    delay =3D muldiv64((now_cl + diff_sec), NANOSEC= ONDS_PER_SECOND, 1);
+
+    if (s->alarm_timer) {
+        timer_del(s->alarm_timer= );
+    }
+    timer_mod(s->alarm_timer, delay);
+}
+
+static void pcf8563_update_irq(Pcf8563State *s)
+{
+    if (FIELD_EX8(s->cs2, PCF8563_CS2, TF)) {
+        timer_irq(s);
+    }
+
+    if (FIELD_EX8(s->cs2, PCF8563_CS2, AF)) {
+        alarm_irq(s);
+    }
+}
+
+static void alarm_timer_cb(void *opaque)
+{
+    Pcf8563State *s =3D PCF8563(opaque);
+
+    set_alarm(s);
+    s->cs2 =3D FIELD_DP8(s->cs2, PCF8563_CS2, AF,= 1);
+    pcf8563_update_irq(s);
+}
+
+static void timer_cb(void *opaque)
+{
+    Pcf8563State *s =3D PCF8563(opaque);
+
+    s->timer_cnt =3D 0;
+    s->cs2 =3D FIELD_DP8(s->cs2, PCF8563_CS2, TF,= 1);
+    pcf8563_update_irq(s);
+}
+
+static void irq_gen_timer_cb(void *opaque)
+{
+    Pcf8563State *s =3D PCF8563(opaque);
+
+    pcf8563_update_irq(s);
+}
+
+static inline void capture_time(Pcf8563State *s)
+{
+    qemu_get_timedate(&s->current_time, s->ti= me_offset);
+    trace_pcf8563_rtc_capture_time();
+}
+
+static void set_time(Pcf8563State *s, struct tm *tm)
+{
+    s->time_offset =3D qemu_timedate_diff(tm);
+    set_alarm(s);
+    trace_pcf8563_rtc_set_time();
+}
+
+static void pcf8563_reset(I2CSlave *i2c)
+{
+    Pcf8563State *s =3D PCF8563(i2c);
+
+    s->read_index =3D 0;
+    s->write_index =3D 0;
+    s->reg_addr =3D 0;
+
+    s->cs1 =3D 0x8;
+    s->cs2 =3D 0x0;
+    s->vls =3D 0x80;
+    s->minutes =3D 0x0;
+    s->hours =3D 0x0;
+    s->days =3D 0x0;
+    s->weekdays =3D 0x0;
+    s->centure_months =3D 0x0;
+    s->years =3D 0x0;
+    s->minute_a =3D 0x80;
+    s->hour_a =3D 0x80;
+    s->day_a =3D 0x80;
+    s->weekday_a =3D 0x80;
+    s->clkout_ctl =3D 0x80;
+    s->timer_ctl =3D 0x3;
+    s->timer_cnt =3D 0x0;
+
+    s->stop_time =3D 0;
+    s->reg_addr =3D 0;
+
+    s->alarm_irq =3D false;
+    s->time_offset =3D 0;
+
+    qemu_irq_lower(s->irq);
+    qemu_get_timedate(&s->tm_alarm, 0);
+
+    timer_del(s->alarm_timer);
+    timer_del(s->timer);
+}
+
+static void pcf8563_read(Pcf8563State *s, uint8_t *result)
+{
+    struct tm *tm =3D &s->current_time;
+
+    bool multiply =3D false;
+    uint16_t src_freq =3D get_src_freq(s, &multiply= );
+
+    switch (s->reg_addr) {
+    case PCF8563_CS1:
+        *result =3D s->cs1;
+        break;
+    case PCF8563_CS2:
+        *result =3D s->cs2;
+        break;
+    case PCF8563_VLS:
+        *result =3D (s->vls &= ; 0x80) | to_bcd(tm->tm_sec);
+        break;
+    case PCF8563_MINUTES:
+        *result =3D to_bcd(tm->t= m_min);
+        break;
+    case PCF8563_HOURS:
+        *result =3D to_bcd(tm->t= m_hour);
+        break;
+    case PCF8563_DAYS:
+        *result =3D to_bcd(tm->t= m_mday);
+        break;
+    case PCF8563_WEEKDAYS:
+        *result =3D to_bcd(tm->t= m_wday);
+        break;
+    case PCF8563_CENTURY_MONTHS:
+        *result =3D to_bcd(tm->t= m_mon + 1);
+        break;
+    case PCF8563_YEARS:
+        *result =3D to_bcd((tm->= tm_year + 1900) % 100);
+        break;
+    case PCF8563_MINUTE_A:
+        *result =3D s->minute_a;=
+        break;
+    case PCF8563_HOUR_A:
+        *result =3D s->hour_a; +        break;
+    case PCF8563_DAY_A:
+        *result =3D s->day_a; +        break;
+    case PCF8563_WEEKDAY_A:
+        *result =3D s->weekday_a= ;
+        break;
+    case PCF8563_CLKOUT_CTL:
+        *result =3D s->clkout_ct= l;
+        break;
+    case PCF8563_TIMER_CTL:
+        *result =3D s->timer_ctl= ;
+        break;
+    case PCF8563_TIMER:
+        if (timer_pending(s->tim= er)) {
+            uin= t64_t expire_time_s =3D muldiv64(timer_expire_time_ns(s->timer),
+           &nbs= p;            &= nbsp;           &nbs= p;         1,
+           &nbs= p;            &= nbsp;           &nbs= p;         NANOSECONDS_PER_SECOND);=
+            if = (multiply) {
+           &nbs= p;    s->timer_cnt =3D muldiv64(expire_time_s, 1, src_fre= q);
+            } e= lse {
+           &nbs= p;    s->timer_cnt =3D muldiv64(expire_time_s, src_freq, = 1);
+            } +        }
+        *result =3D s->timer_cnt= ;
+        break;
+    }
+}
+
+static void pcf8563_write(Pcf8563State *s, uint8_t val)
+{
+    struct tm *tm =3D &s->current_time;
+    int tmp;
+
+    switch (s->reg_addr) {
+    case PCF8563_CS1:
+        s->cs1 =3D val & 0xa= 8;
+        break;
+    case PCF8563_CS2:
+        s->cs2 =3D val & 0x1= f;
+        break;
+    case PCF8563_VLS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_VLS, SECONDS));
+        if (tmp >=3D 0 &&= ; tmp <=3D 59) {
+            tm-= >tm_sec =3D tmp;
+            set= _time(s, tm);
+        }
+
+        bool vl =3D FIELD_EX8(val, = PCF8563_VLS, VL);
+
+        if (vl ^ (s->vls & 0= x80)) {
+            if = (vl) {
+           &nbs= p;    /* Clock integrity is not guaranteed */
+           &nbs= p;    s->stop_time =3D time(NULL);
+            } e= lse if (s->stop_time !=3D 0) {
+           &nbs= p;    s->time_offset +=3D s->stop_time - time(NULL= );
+           &nbs= p;    s->stop_time =3D 0;
+            } +        }
+
+        s->vls =3D vl << 8= ;
+        break;
+    case PCF8563_MINUTES:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_MINUTES, MINUTES));
+        if (tmp >=3D 0 &&= ; tmp <=3D 59) {
+            s-&= gt;minutes =3D val;
+            tm-= >tm_min =3D tmp;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_HOURS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_HOURS, HOURS));
+        if (tmp >=3D 0 &&= ; tmp <=3D 23) {
+            s-&= gt;hours =3D val;
+            tm-= >tm_hour =3D tmp;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_DAYS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_DAYS, DAYS));
+        if (tmp >=3D 1 &&= ; tmp <=3D 31) {
+            s-&= gt;days =3D val;
+            tm-= >tm_mday =3D tmp;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_WEEKDAYS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_WEEKDAYS, WEEKDAYS));
+        if (tmp >=3D 0 &&= ; tmp <=3D 6) {
+            s-&= gt;weekdays =3D val;
+            tm-= >tm_wday =3D tmp;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_CENTURY_MONTHS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_CENTURY_MONTHS, MONTHS));
+        if (tmp >=3D 0 &&= ; tmp <=3D 12) {
+            s-&= gt;centure_months =3D val;
+            tm-= >tm_mon =3D tmp;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_YEARS:
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_YEARS, YEARS));
+        if (tmp >=3D 0 &&= ; tmp <=3D 99) {
+            s-&= gt;years =3D val;
+            tm-= >tm_year =3D tmp + 100;
+            set= _time(s, tm);
+        }
+        break;
+    case PCF8563_MINUTE_A:
+        s->minute_a =3D val;
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_MINUTE_A, MINUTE_A));
+        if (tmp >=3D 0 &&= ; tmp <=3D 59) {
+            s-&= gt;tm_alarm.tm_min =3D tmp;
+            set= _alarm(s);
+        }
+        break;
+    case PCF8563_HOUR_A:
+        s->hour_a =3D val & = 0xbf;
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_HOUR_A, HOUR_A));
+        if (tmp >=3D 0 &&= ; tmp <=3D 23) {
+            s-&= gt;tm_alarm.tm_hour =3D tmp;
+            set= _alarm(s);
+        }
+        break;
+    case PCF8563_DAY_A:
+        s->day_a =3D val & 0= xbf;
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_DAY_A, DAY_A));
+        if (tmp >=3D 1 &&= ; tmp <=3D 31) {
+            s-&= gt;tm_alarm.tm_mday =3D tmp;
+            set= _alarm(s);
+        }
+        break;
+    case PCF8563_WEEKDAY_A:
+        s->weekday_a =3D val &am= p; 0x87;
+        tmp =3D from_bcd(FIELD_EX8(= val, PCF8563_WEEKDAY_A, WEEKDAY_A));
+        if (tmp >=3D 0 &&= ; tmp <=3D 6) {
+            s-&= gt;tm_alarm.tm_wday =3D tmp;
+            set= _alarm(s);
+        }
+        break;
+    case PCF8563_CLKOUT_CTL:
+        s->clkout_ctl =3D val &a= mp; 0x83;
+        break;
+    case PCF8563_TIMER_CTL:
+        s->timer_ctl =3D val &am= p; 0x83;
+
+        if (!FIELD_EX32(s->timer= _ctl, PCF8563_TIMER_CTL, TE)) {
+            if = (timer_pending(s->timer)) {
+           &nbs= p;    timer_del(s->timer);
+            } +        }
+        break;
+    case PCF8563_TIMER:
+        s->timer_cnt =3D val; +        if (FIELD_EX32(s->timer_= ctl, PCF8563_TIMER_CTL, TE)) {
+            boo= l multiply =3D false;
+            uin= t16_t src_freq =3D get_src_freq(s, &multiply);
+            uin= t64_t delay =3D 0;
+
+            /* = Calculate timer's delay in ns based on value and set it up */
+            if = (multiply) {
+           &nbs= p;    delay =3D val * NANOSECONDS_PER_SECOND * src_freq;
+            } e= lse {
+           &nbs= p;    delay =3D val * NANOSECONDS_PER_SECOND / src_freq;
+            } +            tim= er_mod(s->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + delay);
+        }
+        break;
+    }
+}
+
+static uint8_t pcf8563_rx(I2CSlave *i2c)
+{
+    Pcf8563State *s =3D PCF8563(i2c);
+    uint8_t result =3D 0xff;
+
+    pcf8563_read(s, &result);
+    /* Auto-increment register address */
+    s->reg_addr++;
+
+    trace_pcf8563_rtc_read(s->read_index, result); +    return result;
+}
+
+static int pcf8563_tx(I2CSlave *i2c, uint8_t data)
+{
+    Pcf8563State *s =3D PCF8563(i2c);
+
+    if (s->write_index =3D=3D 0) {
+        /* Receive register address= */
+        s->reg_addr =3D data; +        s->write_index++= ;
+        trace_pcf8563_rtc_write_add= r(data);
+    } else {
+        /* Receive data to write */=
+        pcf8563_write(s, data);
+        s->write_index++= ;
+        s->reg_addr++; +        trace_pcf8563_rtc_write_dat= a(data);
+    }
+    return 0;
+}
+
+static int pcf8563_event(I2CSlave *i2c, enum i2c_event event)
+{
+    trace_pcf8563_rtc_event(event);
+    Pcf8563State *s =3D PCF8563(i2c);
+
+    switch (event) {
+    case I2C_START_RECV:
+        capture_time(s);
+        break;
+    case I2C_FINISH:
+        s->read_index =3D 0;
+        s->write_index =3D 0; +    default:
+        break;
+    }
+    return 0;
+}
+
+static const VMStateDescription vmstate_pcf8563 =3D {
+    .name =3D "PCF8563",
+    .version_id =3D 0,
+    .minimum_version_id =3D 0,
+    .fields =3D (const VMStateField[]) {
+        VMSTATE_I2C_SLAVE(parent_ob= j, Pcf8563State),
+        VMSTATE_UINT8(read_index, P= cf8563State),
+        VMSTATE_UINT8(write_index, = Pcf8563State),
+        VMSTATE_UINT8(reg_addr, Pcf= 8563State),
+        VMSTATE_UINT8(cs1, Pcf8563S= tate),
+        VMSTATE_UINT8(cs2, Pcf8563S= tate),
+        VMSTATE_UINT8(vls, Pcf8563S= tate),
+        VMSTATE_UINT8(minutes, Pcf8= 563State),
+        VMSTATE_UINT8(hours, Pcf856= 3State),
+        VMSTATE_UINT8(days, Pcf8563= State),
+        VMSTATE_UINT8(weekdays, Pcf= 8563State),
+        VMSTATE_UINT8(centure_month= s, Pcf8563State),
+        VMSTATE_UINT8(years, Pcf856= 3State),
+        VMSTATE_UINT8(minute_a, Pcf= 8563State),
+        VMSTATE_UINT8(hour_a, Pcf85= 63State),
+        VMSTATE_UINT8(day_a, Pcf856= 3State),
+        VMSTATE_UINT8(weekday_a, Pc= f8563State),
+        VMSTATE_UINT8(clkout_ctl, P= cf8563State),
+        VMSTATE_UINT8(timer_ctl, Pc= f8563State),
+        VMSTATE_UINT8(timer_cnt, Pc= f8563State),
+        VMSTATE_TIMER_PTR(timer, Pc= f8563State),
+        VMSTATE_TIMER_PTR(irq_gen_t= imer, Pcf8563State),
+        VMSTATE_TIMER_PTR(alarm_tim= er, Pcf8563State),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void pcf8563_init(Object *obj)
+{
+    I2CSlave *i2c =3D I2C_SLAVE(obj);
+    Pcf8563State *s =3D PCF8563(obj);
+
+    s->alarm_timer =3D timer_new_ns(rtc_clock, &= alarm_timer_cb, s);
+    s->timer =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, &a= mp;timer_cb, s);
+    s->irq_gen_timer =3D timer_new_ns(QEMU_CLOCK_VIR= TUAL, &irq_gen_timer_cb, s);
+
+    qdev_init_gpio_out(DEVICE(s), &s->irq, 1); +
+    pcf8563_reset(i2c);
+
+    trace_pcf8563_rtc_init();
+
+    s->reg_addr =3D 0x09;
+    pcf8563_write(s, 0x81);
+    set_alarm(s);
+}
+
+static void pcf8563_reset_hold(Object *obj, ResetType type)
+{
+    I2CSlave *i2c =3D I2C_SLAVE(obj);
+    pcf8563_reset(i2c);
+}
+
+static void pcf8563_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc =3D DEVICE_CLASS(klass);
+    I2CSlaveClass *k =3D I2C_SLAVE_CLASS(klass);
+    ResettableClass *rc =3D RESETTABLE_CLASS(klass); +
+    k->event =3D pcf8563_event;
+    k->recv =3D pcf8563_rx;
+    k->send =3D pcf8563_tx;
+    dc->vmsd =3D &vmstate_pcf8563;
+    rc->phases.hold =3D pcf8563_reset_hold;
+}
+
+static const TypeInfo pcf8563_register_types[] =3D {
+    {
+        .name   &nbs= p;      =3D TYPE_PCF8563,
+        .parent   &n= bsp;    =3D TYPE_I2C_SLAVE,
+        .instance_size =3D sizeof(P= cf8563State),
+        .instance_init =3D pcf8563_= init,
+        .class_init  &nbs= p; =3D pcf8563_class_init,
+    },
+};
+
+DEFINE_TYPES(pcf8563_register_types)
diff --git a/hw/rtc/trace-events b/hw/rtc/trace-events
index 743ff775d4..17c524d61d 100644
--- a/hw/rtc/trace-events
+++ b/hw/rtc/trace-events
@@ -43,3 +43,15 @@ stm32_rtc_arm_ointr(uint64_t tocks, uint64_t nsecs) = "overflow interrupt in %" PR
 stm32_rtc_arm_aintr(uint64_t tocks, uint64_t nsecs) "alarm inter= rupt in %" PRIu64 " ticks, %" PRIu64" nsecs"
 stm32_rtc_read(uint64_t addr, uint64_t value, uint32_t size) "ad= dr 0x%02" PRIx64 " value 0x%08" PRIx64" size %u"  stm32_rtc_write(uint64_t addr, uint64_t value, uint32_t size) "a= ddr 0x%02" PRIx64 " value 0x%08" PRIx64" size %u"<= br> +
+# pcf8563_rtc.c
+pcf8563_rtc_write_data(uint8_t data) "data: 0x%x"
+pcf8563_rtc_write_addr(uint8_t addr) "register address: 0x%x"= ;
+pcf8563_rtc_read(uint8_t addr, uint8_t data) "addr: 0x%x, data: 0= x%x"
+pcf8563_rtc_event(uint8_t event) "Event: 0x%x"
+pcf8563_rtc_init(void)
+pcf8563_rtc_reset(void)
+pcf8563_rtc_set_time(void)
+pcf8563_rtc_get_time(void)
+pcf8563_rtc_set_alarm(void)
+pcf8563_rtc_capture_time(void)
--
2.34.1

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