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-rw-r--r--firmware/export/config/gigabeats.h2
-rw-r--r--firmware/export/mc13783.h9
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/adc-gigabeat-s.c4
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/button-gigabeat-s.c33
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/headphone-gigabeat-s.c4
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/mc13783-gigabeat-s.c15
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c31
-rw-r--r--firmware/target/arm/imx31/gigabeat-s/usb-gigabeat-s.c17
-rw-r--r--firmware/target/arm/imx31/mc13783-imx31.c210
9 files changed, 168 insertions, 157 deletions
diff --git a/firmware/export/config/gigabeats.h b/firmware/export/config/gigabeats.h
index 481a666b4b..685076bfa3 100644
--- a/firmware/export/config/gigabeats.h
+++ b/firmware/export/config/gigabeats.h
@@ -164,7 +164,7 @@
#define GPIO_EVENT_MASK (USE_GPIO1_EVENTS)
/* Define this if target has an additional number of threads specific to it */
-#define TARGET_EXTRA_THREADS 2
+#define TARGET_EXTRA_THREADS 1
/* Type of mobile power - check this out */
#define BATTERY_CAPACITY_DEFAULT 700 /* default battery capacity */
diff --git a/firmware/export/mc13783.h b/firmware/export/mc13783.h
index 99fd004420..4324d06df5 100644
--- a/firmware/export/mc13783.h
+++ b/firmware/export/mc13783.h
@@ -1333,7 +1333,8 @@ enum mc13783_int_ids
struct mc13783_event
{
- enum mc13783_int_ids int_id;
+ enum mc13783_int_ids int_id : 8;
+ uint32_t sense : 24;
void (*callback)(void);
};
@@ -1343,7 +1344,9 @@ struct mc13783_event_list
const struct mc13783_event *events;
};
-bool mc13783_enable_event(enum mc13783_event_ids event);
-void mc13783_disable_event(enum mc13783_event_ids event);
+void mc13783_enable_event(enum mc13783_event_ids id, bool enable);
+
+/* Read the sense bit if one exists - valid only within event handlers */
+uint32_t mc13783_event_sense(enum mc13783_event_ids id);
#endif /* _MC13783_H_ */
diff --git a/firmware/target/arm/imx31/gigabeat-s/adc-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/adc-gigabeat-s.c
index eb30919077..b46fc2f63f 100644
--- a/firmware/target/arm/imx31/gigabeat-s/adc-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/adc-gigabeat-s.c
@@ -110,7 +110,7 @@ bool adc_enable_channel(int channel, bool enable)
!= MC13783_DATA_ERROR;
}
-/* Called by mc13783 interrupt thread when conversion is complete */
+/* ADC conversion complete event - called from PMIC ISR */
void adc_done(void)
{
semaphore_release(&adc_done_signal);
@@ -132,5 +132,5 @@ void adc_init(void)
/* Enable ADCDONE event */
mc13783_write(MC13783_INTERRUPT_STATUS0, MC13783_ADCDONEI);
- mc13783_enable_event(MC13783_ADCDONE_EVENT);
+ mc13783_enable_event(MC13783_ADCDONE_EVENT, true);
}
diff --git a/firmware/target/arm/imx31/gigabeat-s/button-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/button-gigabeat-s.c
index 90db00dcc3..11d1d5a0b4 100644
--- a/firmware/target/arm/imx31/gigabeat-s/button-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/button-gigabeat-s.c
@@ -35,7 +35,7 @@
static bool initialized = false;
#endif
-static int ext_btn = BUTTON_NONE; /* Buttons not on KPP */
+static unsigned long ext_btn = BUTTON_NONE; /* Buttons not on KPP */
static bool hold_button = false;
#ifndef BOOTLOADER
static bool hold_button_old = false;
@@ -150,24 +150,16 @@ int button_read_device(void)
#endif
}
-/* This is called from the mc13783 interrupt thread */
-void button_power_event(void)
+/* Helper to update the power button status */
+static void power_button_update(bool pressed)
{
- bool pressed =
- (mc13783_read(MC13783_INTERRUPT_SENSE1) & MC13783_ONOFD1S) == 0;
-
- int oldlevel = disable_irq_save();
-
- if (pressed)
- {
- ext_btn |= BUTTON_POWER;
- }
- else
- {
- ext_btn &= ~BUTTON_POWER;
- }
+ bitmod32(&ext_btn, pressed ? BUTTON_POWER : 0, BUTTON_POWER);
+}
- restore_irq(oldlevel);
+/* Power button event - called from PMIC ISR */
+void button_power_event(void)
+{
+ power_button_update(!mc13783_event_sense(MC13783_ONOFD1_EVENT));
}
void button_init_device(void)
@@ -203,8 +195,9 @@ void button_init_device(void)
* 6. Set the KDIE control bit bit. */
KPP_KPSR = KPP_KPSR_KRSS | KPP_KPSR_KDSC | KPP_KPSR_KPKD;
- button_power_event();
- mc13783_enable_event(MC13783_ONOFD1_EVENT);
+ power_button_update(!(mc13783_read(MC13783_INTERRUPT_SENSE1)
+ & MC13783_ONOFD1S));
+ mc13783_enable_event(MC13783_ONOFD1_EVENT, true);
#ifdef HAVE_HEADPHONE_DETECTION
headphone_init();
@@ -220,7 +213,7 @@ void button_close_device(void)
/* Assumes HP detection is not available */
initialized = false;
- mc13783_disable_event(MC13783_ONOFD1_EVENT);
+ mc13783_enable_event(MC13783_ONOFD1_EVENT, true);
ext_btn = BUTTON_NONE;
}
#endif /* BUTTON_DRIVER_CLOSE */
diff --git a/firmware/target/arm/imx31/gigabeat-s/headphone-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/headphone-gigabeat-s.c
index 6e76615308..4e1792d467 100644
--- a/firmware/target/arm/imx31/gigabeat-s/headphone-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/headphone-gigabeat-s.c
@@ -171,7 +171,7 @@ static void headphone_thread(void)
}
}
-/* This is called from the mc13783 interrupt thread */
+/* HP plugged/unplugged event - called from PMIC ISR */
void headphone_detect_event(void)
{
/* Trigger the thread immediately. */
@@ -197,5 +197,5 @@ void INIT_ATTR headphone_init(void)
/* Initially poll and then enable PMIC event */
headphone_detect_event();
- mc13783_enable_event(MC13783_ONOFD2_EVENT);
+ mc13783_enable_event(MC13783_ONOFD2_EVENT, true);
}
diff --git a/firmware/target/arm/imx31/gigabeat-s/mc13783-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/mc13783-gigabeat-s.c
index 12009fae06..6ae8c23c48 100644
--- a/firmware/target/arm/imx31/gigabeat-s/mc13783-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/mc13783-gigabeat-s.c
@@ -55,28 +55,33 @@ const struct mc13783_event mc13783_events[MC13783_NUM_EVENTS] =
{
[MC13783_ADCDONE_EVENT] = /* ADC conversion complete */
{
- .int_id = MC13783_INT_ID_ADCDONE,
+ .int_id = MC13783_INT_ID_ADCDONE,
+ .sense = 0,
.callback = adc_done,
},
[MC13783_ONOFD1_EVENT] = /* Power button */
{
- .int_id = MC13783_INT_ID_ONOFD1,
+ .int_id = MC13783_INT_ID_ONOFD1,
+ .sense = MC13783_ONOFD1S,
.callback = button_power_event,
},
[MC13783_SE1_EVENT] = /* Main charger detection */
{
- .int_id = MC13783_INT_ID_SE1,
+ .int_id = MC13783_INT_ID_SE1,
+ .sense = MC13783_SE1S,
.callback = charger_main_detect_event,
},
[MC13783_USB_EVENT] = /* USB insertion/USB charger detection */
{
- .int_id = MC13783_INT_ID_USB,
+ .int_id = MC13783_INT_ID_USB,
+ .sense = MC13783_USB4V4S,
.callback = usb_connect_event,
},
#ifdef HAVE_HEADPHONE_DETECTION
[MC13783_ONOFD2_EVENT] = /* Headphone jack */
{
- .int_id = MC13783_INT_ID_ONOFD2,
+ .int_id = MC13783_INT_ID_ONOFD2,
+ .sense = 0,
.callback = headphone_detect_event,
},
#endif
diff --git a/firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c
index 11276a6c3a..5b255a0e27 100644
--- a/firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c
@@ -33,7 +33,7 @@
#include "fmradio_i2c.h"
#endif
-static unsigned int power_status = POWER_INPUT_NONE;
+static unsigned long power_status = POWER_INPUT_NONE;
/* Detect which power sources are present. */
unsigned int power_input_status(void)
@@ -58,24 +58,28 @@ void usb_charging_maxcurrent_change(int maxcurrent)
/* Nothing to do */
}
-/* Detect changes in presence of the AC adaptor. */
+/* Helper to update the charger status */
+static void update_main_charger(bool present)
+{
+ bitmod32(&power_status, present ? POWER_INPUT_MAIN_CHARGER : 0,
+ POWER_INPUT_MAIN_CHARGER);
+}
+
+/* Detect changes in presence of the AC adaptor. Called from PMIC ISR. */
void charger_main_detect_event(void)
{
- if (mc13783_read(MC13783_INTERRUPT_SENSE0) & MC13783_SE1S)
- power_status |= POWER_INPUT_MAIN_CHARGER;
- else
- power_status &= ~POWER_INPUT_MAIN_CHARGER;
+ update_main_charger(mc13783_event_sense(MC13783_INT_ID_SE1)
+ & MC13783_SE1S);
}
-/* Detect changes in USB bus power. Called from usb connect event handler. */
+/* Detect changes in USB bus power. Called from usb connect event ISR. */
void charger_usb_detect_event(int status)
{
/* USB plugged does not imply charging is possible or even
* powering the device to maintain the battery. */
- if (status == USB_INSERTED)
- power_status |= POWER_INPUT_USB_CHARGER;
- else
- power_status &= ~POWER_INPUT_USB_CHARGER;
+ bitmod32(&power_status,
+ status == USB_INSERTED ? POWER_INPUT_USB_CHARGER : 0,
+ POWER_INPUT_USB_CHARGER);
}
/* charging_state is implemented in powermgmt-imx31.c */
@@ -152,8 +156,9 @@ void power_init(void)
#endif
/* Poll initial state */
- charger_main_detect_event();
+ update_main_charger(mc13783_read(MC13783_INTERRUPT_SENSE0)
+ & MC13783_SE1S);
/* Enable detect event */
- mc13783_enable_event(MC13783_SE1_EVENT);
+ mc13783_enable_event(MC13783_SE1_EVENT, true);
}
diff --git a/firmware/target/arm/imx31/gigabeat-s/usb-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/usb-gigabeat-s.c
index b157544016..1584ffb574 100644
--- a/firmware/target/arm/imx31/gigabeat-s/usb-gigabeat-s.c
+++ b/firmware/target/arm/imx31/gigabeat-s/usb-gigabeat-s.c
@@ -59,16 +59,23 @@ bool usb_plugged(void)
return mc13783_read(MC13783_INTERRUPT_SENSE0) & MC13783_USB4V4S;
}
-void usb_connect_event(void)
+/* Helper to update the USB cable status */
+static void update_usb_status(bool sense)
{
- /* Read the immediate state of the cable from the PMIC */
- int status = usb_plugged() ? USB_INSERTED : USB_EXTRACTED;
+ int status = sense ? USB_INSERTED : USB_EXTRACTED;
usb_status = status;
/* Notify power that USB charging is potentially available */
charger_usb_detect_event(status);
usb_status_event(status);
}
+/* Detect presence of USB bus - called from PMIC ISR */
+void usb_connect_event(void)
+{
+ /* Read the associated sense value */
+ update_usb_status(mc13783_event_sense(MC13783_USB_EVENT));
+}
+
int usb_detect(void)
{
return usb_status;
@@ -80,10 +87,10 @@ void usb_init_device(void)
usb_drv_startup();
/* Initially poll */
- usb_connect_event();
+ update_usb_status(usb_plugged());
/* Enable PMIC event */
- mc13783_enable_event(MC13783_USB_EVENT);
+ mc13783_enable_event(MC13783_USB_EVENT, true);
}
void usb_enable(bool on)
diff --git a/firmware/target/arm/imx31/mc13783-imx31.c b/firmware/target/arm/imx31/mc13783-imx31.c
index 01690f0def..31b91b46fc 100644
--- a/firmware/target/arm/imx31/mc13783-imx31.c
+++ b/firmware/target/arm/imx31/mc13783-imx31.c
@@ -26,26 +26,6 @@
#include "debug.h"
#include "kernel.h"
-extern const struct mc13783_event mc13783_events[MC13783_NUM_EVENTS];
-extern struct spi_node mc13783_spi;
-
-/* PMIC event service data */
-static int mc13783_thread_stack[DEFAULT_STACK_SIZE/sizeof(int)];
-static const char * const mc13783_thread_name = "pmic";
-static struct semaphore mc13783_svc_wake;
-
-/* Tracking for which interrupts are enabled */
-static uint32_t pmic_int_enabled[2] =
- { 0x00000000, 0x00000000 };
-
-static const unsigned char pmic_intm_regs[2] =
- { MC13783_INTERRUPT_MASK0, MC13783_INTERRUPT_MASK1 };
-
-static const unsigned char pmic_ints_regs[2] =
- { MC13783_INTERRUPT_STATUS0, MC13783_INTERRUPT_STATUS1 };
-
-static volatile unsigned int mc13783_thread_id = 0;
-
/* Extend the basic SPI transfer descriptor with our own fields */
struct mc13783_transfer_desc
{
@@ -57,6 +37,32 @@ struct mc13783_transfer_desc
};
};
+extern const struct mc13783_event mc13783_events[MC13783_NUM_EVENTS];
+extern struct spi_node mc13783_spi;
+
+static uint32_t pmic_int_enb[2]; /* Enabled ints */
+static uint32_t pmic_int_sense_enb[2]; /* Enabled sense reading */
+static uint32_t int_pnd_buf[2]; /* Pending ints */
+static uint32_t int_data_buf[4]; /* ISR data buffer */
+static struct spi_transfer_desc int_xfers[2]; /* ISR transfer descriptor */
+static bool restore_event = true;
+
+static inline bool mc13783_transfer(struct spi_transfer_desc *xfer,
+ uint32_t *txbuf,
+ uint32_t *rxbuf,
+ int count,
+ spi_transfer_cb_fn_type callback)
+{
+ xfer->node = &mc13783_spi;
+ xfer->txbuf = txbuf;
+ xfer->rxbuf = rxbuf;
+ xfer->count = count;
+ xfer->callback = callback;
+ xfer->next = NULL;
+
+ return spi_transfer(xfer);
+}
+
/* Called when a transfer is finished and data is ready/written */
static void mc13783_xfer_complete_cb(struct spi_transfer_desc *xfer)
{
@@ -69,74 +75,87 @@ static inline bool wait_for_transfer_complete(struct mc13783_transfer_desc *xfer
== OBJ_WAIT_SUCCEEDED && xfer->xfer.count == 0;
}
-static void mc13783_interrupt_thread(void)
+/* Efficient interrupt status and acking */
+static void mc13783_int_svc_complete_callback(struct spi_transfer_desc *xfer)
{
- uint32_t pending[2];
-
- /* Enable mc13783 GPIO event */
- gpio_enable_event(MC13783_EVENT_ID);
+ /* Restore PMIC interrupt events */
+ if (restore_event)
+ bitset32(&MC13783_GPIO_IMR, 1ul << MC13783_GPIO_LINE);
- while (1)
+ /* Call handlers */
+ for (
+ const struct mc13783_event *event = mc13783_events;
+ int_pnd_buf[0] | int_pnd_buf[1];
+ event++
+ )
{
- const struct mc13783_event *event, *event_last;
-
- semaphore_wait(&mc13783_svc_wake, TIMEOUT_BLOCK);
-
- if (mc13783_thread_id == 0)
- break;
-
- mc13783_read_regs(pmic_ints_regs, pending, 2);
-
- /* Only clear interrupts being dispatched */
- pending[0] &= pmic_int_enabled[0];
- pending[1] &= pmic_int_enabled[1];
+ unsigned int set = event->int_id / MC13783_INT_ID_SET_DIV;
+ uint32_t pnd = int_pnd_buf[set];
+ uint32_t mask = 1 << (event->int_id & MC13783_INT_ID_NUM_MASK);
- mc13783_write_regs(pmic_ints_regs, pending, 2);
+ if (pnd & mask)
+ {
+ event->callback();
+ int_pnd_buf[set] = pnd & ~mask;
+ }
+ }
- /* Whatever is going to be serviced in this loop has been
- * acknowledged. Reenable interrupt and if anything was still
- * pending or became pending again, another signal will be
- * generated. */
- bitset32(&MC13783_GPIO_IMR, 1ul << MC13783_GPIO_LINE);
+ (void)xfer;
+}
- event = mc13783_events;
- event_last = event + MC13783_NUM_EVENTS;
+static void mc13783_int_svc_callback(struct spi_transfer_desc *xfer)
+{
+ /* Only clear interrupts with handlers */
+ int_pnd_buf[0] &= pmic_int_enb[0];
+ int_pnd_buf[1] &= pmic_int_enb[1];
- /* .count is surely expected to be > 0 */
- do
- {
- unsigned int set = event->int_id / MC13783_INT_ID_SET_DIV;
- uint32_t pnd = pending[set];
- uint32_t mask = 1 << (event->int_id & MC13783_INT_ID_NUM_MASK);
-
- if (pnd & mask)
- {
- event->callback();
- pending[set] = pnd & ~mask;
- }
-
- if ((pending[0] | pending[1]) == 0)
- break; /* Terminate early if nothing more to service */
- }
- while (++event < event_last);
+ /* Only read sense if enabled interrupts have them enabled */
+ if ((int_pnd_buf[0] & pmic_int_sense_enb[0]) ||
+ (int_pnd_buf[1] & pmic_int_sense_enb[1]))
+ {
+ int_data_buf[2] = MC13783_INTERRUPT_SENSE0 << 25;
+ int_data_buf[3] = MC13783_INTERRUPT_SENSE1 << 25;
+ int_xfers[1].rxbuf = int_data_buf;
+ int_xfers[1].count = 4;
}
- gpio_disable_event(MC13783_EVENT_ID);
+ /* Setup the write packets with status(es) to clear */
+ int_data_buf[0] = (1 << 31) | (MC13783_INTERRUPT_STATUS0 << 25)
+ | int_pnd_buf[0];
+ int_data_buf[1] = (1 << 31) | (MC13783_INTERRUPT_STATUS1 << 25)
+ | int_pnd_buf[1];
+ (void)xfer;
}
/* GPIO interrupt handler for mc13783 */
void mc13783_event(void)
{
- /* Mask the interrupt (unmasked when PMIC thread services it). */
+ /* Mask the interrupt (unmasked after final read services it). */
bitclr32(&MC13783_GPIO_IMR, 1ul << MC13783_GPIO_LINE);
MC13783_GPIO_ISR = (1ul << MC13783_GPIO_LINE);
- semaphore_release(&mc13783_svc_wake);
+
+ /* Setup the read packets */
+ int_pnd_buf[0] = MC13783_INTERRUPT_STATUS0 << 25;
+ int_pnd_buf[1] = MC13783_INTERRUPT_STATUS1 << 25;
+
+ unsigned long cpsr = disable_irq_save();
+
+ /* Do these without intervening transfers */
+ if (mc13783_transfer(&int_xfers[0], int_pnd_buf, int_pnd_buf, 2,
+ mc13783_int_svc_callback))
+ {
+ /* Start this provisionally and fill-in actual values during the
+ first transfer's callback - set whatever could be known */
+ mc13783_transfer(&int_xfers[1], int_data_buf, NULL, 2,
+ mc13783_int_svc_complete_callback);
+ }
+
+ restore_irq(cpsr);
}
void INIT_ATTR mc13783_init(void)
{
/* Serial interface must have been initialized first! */
- semaphore_init(&mc13783_svc_wake, 1, 0);
/* Enable the PMIC SPI module */
spi_enable_node(&mc13783_spi, true);
@@ -147,62 +166,41 @@ void INIT_ATTR mc13783_init(void)
mc13783_write(MC13783_INTERRUPT_MASK1, 0xffffff);
MC13783_GPIO_ISR = (1ul << MC13783_GPIO_LINE);
-
- mc13783_thread_id =
- create_thread(mc13783_interrupt_thread,
- mc13783_thread_stack, sizeof(mc13783_thread_stack), 0,
- mc13783_thread_name IF_PRIO(, PRIORITY_REALTIME) IF_COP(, CPU));
+ gpio_enable_event(MC13783_EVENT_ID);
}
void mc13783_close(void)
{
- unsigned int thread_id = mc13783_thread_id;
-
- if (thread_id == 0)
- return;
-
- mc13783_thread_id = 0;
- semaphore_release(&mc13783_svc_wake);
- thread_wait(thread_id);
+ gpio_disable_event(MC13783_EVENT_ID);
spi_enable_node(&mc13783_spi, false);
}
-bool mc13783_enable_event(enum mc13783_event_ids id)
+void mc13783_enable_event(enum mc13783_event_ids id, bool enable)
{
+ static const unsigned char pmic_intm_regs[2] =
+ { MC13783_INTERRUPT_MASK0, MC13783_INTERRUPT_MASK1 };
+
const struct mc13783_event * const event = &mc13783_events[id];
unsigned int set = event->int_id / MC13783_INT_ID_SET_DIV;
uint32_t mask = 1 << (event->int_id & MC13783_INT_ID_NUM_MASK);
- pmic_int_enabled[set] |= mask;
- mc13783_clear(pmic_intm_regs[set], mask);
-
- return true;
+ /* Mask GPIO while changing bits around */
+ restore_event = false;
+ bitclr32(&MC13783_GPIO_IMR, 1ul << MC13783_GPIO_LINE);
+ mc13783_write_masked(pmic_intm_regs[set],
+ enable ? 0 : mask, mask);
+ bitmod32(&pmic_int_enb[set], enable ? mask : 0, mask);
+ bitmod32(&pmic_int_sense_enb[set], enable ? event->sense : 0,
+ event->sense);
+ restore_event = true;
+ bitset32(&MC13783_GPIO_IMR, 1ul << MC13783_GPIO_LINE);
}
-void mc13783_disable_event(enum mc13783_event_ids id)
+uint32_t mc13783_event_sense(enum mc13783_event_ids id)
{
const struct mc13783_event * const event = &mc13783_events[id];
unsigned int set = event->int_id / MC13783_INT_ID_SET_DIV;
- uint32_t mask = 1 << (event->int_id & MC13783_INT_ID_NUM_MASK);
-
- pmic_int_enabled[set] &= ~mask;
- mc13783_set(pmic_intm_regs[set], mask);
-}
-
-static inline bool mc13783_transfer(struct spi_transfer_desc *xfer,
- uint32_t *txbuf,
- uint32_t *rxbuf,
- int count,
- spi_transfer_cb_fn_type callback)
-{
- xfer->node = &mc13783_spi;
- xfer->txbuf = txbuf;
- xfer->rxbuf = rxbuf;
- xfer->count = count;
- xfer->callback = callback;
- xfer->next = NULL;
-
- return spi_transfer(xfer);
+ return int_data_buf[2 + set] & event->sense;
}
uint32_t mc13783_set(unsigned address, uint32_t bits)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 19:41:44 +0000