Example booting obmc-phosphor-image:
$ qemu-system-arm -M witherspoon-bmc -trace pca\*
26033@1592376001.873828:pca9552_led_state 0x5594a9f57560 LEDs [........
........]
26033@1592376001.874169:pca9552_led_state 0x5594a9f57560 LEDs [........
........]
26033@1592376001.874348:pca9552_led_state 0x5594a9f57560 LEDs [........
........]
26033@1592376001.874514:pca9552_led_state 0x5594a9f57560 LEDs [........
........]
26033@1592376001.879601:pca9552_led_state 0x5594a9f57560 LEDs [........
.......*]
26033@1592376001.880507:pca9552_led_state 0x5594a9f57560 LEDs [........
......**]
26033@1592376001.880885:pca9552_led_state 0x5594a9f57560 LEDs [........
.....***]
26033@1592376001.881228:pca9552_led_state 0x5594a9f57560 LEDs [........
....****]
26033@1592376001.881601:pca9552_led_state 0x5594a9f57560 LEDs [..*.....
....****]
26033@1592376001.881952:pca9552_led_state 0x5594a9f57560 LEDs [.**.....
....****]
26033@1592376001.882299:pca9552_led_state 0x5594a9f57560 LEDs [***.....
....****]
26033@1592376065.090910:pca9552_led_state 0x5594a9f57560 LEDs [*.*.....
....****]
26033@1592376065.600649:pca9552_led_state 0x5594a9f57560 LEDs [***.....
....****]
26033@1592376066.110565:pca9552_led_state 0x5594a9f57560 LEDs [*.*.....
....****]
26033@1592376066.620390:pca9552_led_state 0x5594a9f57560 LEDs [***.....
....****]
Suggested-by: Cédric Le Goater <c...@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
hw/misc/pca9552.c | 18 ++++++++++++++++++
hw/misc/trace-events | 3 +++
2 files changed, 21 insertions(+)
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
index cac729e35a..693f6c3b24 100644
--- a/hw/misc/pca9552.c
+++ b/hw/misc/pca9552.c
@@ -17,6 +17,7 @@
#include "migration/vmstate.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
+#include "trace.h"
#define PCA9552_LED_ON 0x0
#define PCA9552_LED_OFF 0x1
@@ -95,6 +96,23 @@ static void pca9552_write(PCA9552State *s, uint8_t reg,
uint8_t data)
case PCA9552_LS3:
s->regs[reg] = data;
pca9552_update_pin_input(s);
+ if (trace_event_get_state_backends(TRACE_PCA9552_LED_STATE)) {
+ char buf[2][9];
+
+ for (int i = 0; i < 2; i++) {
+ uint8_t val = s->regs[PCA9552_INPUT0 + i];
+ sprintf(buf[i], "%c%c%c%c%c%c%c%c",
+ val & 0x80 ? '*' : '.',
+ val & 0x40 ? '*' : '.',
+ val & 0x20 ? '*' : '.',
+ val & 0x10 ? '*' : '.',
+ val & 0x08 ? '*' : '.',
+ val & 0x04 ? '*' : '.',
+ val & 0x02 ? '*' : '.',
+ val & 0x01 ? '*' : '.');
+ }
+ trace_pca9552_led_state(s, buf[1], buf[0]);
+ }
break;
case PCA9552_INPUT0:
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index 5561746866..21e52f192d 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -206,3 +206,6 @@ via1_rtc_cmd_pram_sect_write(int sector, int offset, int
addr, int value) "secto
# grlib_ahb_apb_pnp.c
grlib_ahb_pnp_read(uint64_t addr, uint32_t value) "AHB PnP read
addr:0x%03"PRIx64" data:0x%08x"
grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP read
addr:0x%03"PRIx64" data:0x%08x"
+
+# pca9552.c
+pca9552_led_state(void *object, const char *bufhi, const char *buflo) "%p LEDs
[%s %s]"
--
2.21.3
