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[PATCH v3 3/7] hw/misc/led: Emit a trace event when LED intensity has ch
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v3 3/7] hw/misc/led: Emit a trace event when LED intensity has changed |
Date: |
Sun, 21 Jun 2020 01:07:15 +0200 |
Track the LED intensity, and emit a trace event when it changes.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
include/hw/misc/led.h | 1 +
hw/misc/led.c | 5 +++++
hw/misc/trace-events | 1 +
3 files changed, 7 insertions(+)
diff --git a/include/hw/misc/led.h b/include/hw/misc/led.h
index 883006bb8f..df5b32a2db 100644
--- a/include/hw/misc/led.h
+++ b/include/hw/misc/led.h
@@ -35,6 +35,7 @@ typedef struct LEDState {
DeviceState parent_obj;
/* Public */
+ uint16_t current_intensity;
qemu_irq irq;
/* Properties */
diff --git a/hw/misc/led.c b/hw/misc/led.c
index 8503dde777..37d9f1f3d2 100644
--- a/hw/misc/led.c
+++ b/hw/misc/led.c
@@ -32,6 +32,11 @@ void led_set_intensity(LEDState *s, uint16_t new_intensity)
{
trace_led_set_intensity(s->description ? s->description : "n/a",
s->color, new_intensity);
+ if (new_intensity != s->current_intensity) {
+ trace_led_change_intensity(s->description ? s->description : "n/a",
+ s->color,
+ s->current_intensity, new_intensity);
+ }
s->current_intensity = new_intensity;
}
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index f58853d367..57d39bf9b9 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -209,6 +209,7 @@ grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP
read addr:0x%03"PRIx6
# led.c
led_set_intensity(const char *color, const char *desc, uint16_t intensity)
"LED desc:'%s' color:%s intensity: 0x%04"PRIx16
+led_change_intensity(const char *color, const char *desc, uint16_t
old_intensity, uint16_t new_intensity) "LED desc:'%s' color:%s intensity
0x%04"PRIx16" -> 0x%04"PRIx16""
# pca9552.c
pca9552_gpio_status(const char *description, const char *buf) "%s GPIOs 0-15
[%s]"
--
2.21.3
[PATCH v3 4/7] hw/arm/aspeed: Add the 3 front LEDs drived by the PCA9552 #1, Philippe Mathieu-Daudé, 2020/06/20
[PATCH v3 5/7] hw/misc/mps2-fpgaio: Use the LED device, Philippe Mathieu-Daudé, 2020/06/20
[PATCH v3 6/7] hw/misc/mps2-scc: Use the LED device, Philippe Mathieu-Daudé, 2020/06/20