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[PATCH v4 8/8] hw/misc/pca9552: Model qdev output GPIOs
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v4 8/8] hw/misc/pca9552: Model qdev output GPIOs |
Date: |
Sun, 21 Jun 2020 00:58:54 +0200 |
The PCA9552 has 16 GPIOs which can be used as input,
output or PWM mode. QEMU models the output GPIO with
the qemu_irq type. Let the device expose the 16 GPIOs
to allow us to later connect LEDs to these outputs.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
include/hw/misc/pca9552.h | 1 +
hw/misc/pca9552.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h
index 755be2e8e5..2545087da3 100644
--- a/include/hw/misc/pca9552.h
+++ b/include/hw/misc/pca9552.h
@@ -30,6 +30,7 @@ typedef struct PCA9552State {
uint8_t max_reg;
char *description; /* For debugging purpose only */
uint8_t nr_leds;
+ qemu_irq gpio[PCA9552_PIN_COUNT];
} PCA9552State;
#endif
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
index 85557b78d9..8f0ce19b74 100644
--- a/hw/misc/pca9552.c
+++ b/hw/misc/pca9552.c
@@ -16,6 +16,7 @@
#include "hw/qdev-properties.h"
#include "hw/misc/pca9552.h"
#include "hw/misc/pca9552_regs.h"
+#include "hw/irq.h"
#include "migration/vmstate.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
@@ -88,9 +89,11 @@ static void pca9552_update_pin_input(PCA9552State *s)
switch (config) {
case PCA9552_LED_ON:
+ qemu_set_irq(s->gpio[i], 1);
s->regs[input_reg] |= 1 << input_shift;
break;
case PCA9552_LED_OFF:
+ qemu_set_irq(s->gpio[i], 0);
s->regs[input_reg] &= ~(1 << input_shift);
break;
case PCA9552_LED_PWM0:
@@ -360,6 +363,7 @@ static void pca9552_realize(DeviceState *dev, Error **errp)
if (!s->description) {
s->description = g_strdup("pca-unspecified");
}
+ qdev_init_gpio_out(dev, s->gpio, s->nr_leds);
}
static Property pca9552_properties[] = {
--
2.21.3
- Re: [PATCH v4 4/8] hw/misc/pca9552: Add a 'description' property for debugging purpose, (continued)
[PATCH v4 5/8] hw/misc/pca9552: Trace GPIO High/Low events, Philippe Mathieu-Daudé, 2020/06/20
[PATCH v4 6/8] hw/arm/aspeed: Describe each PCA9552 device, Philippe Mathieu-Daudé, 2020/06/20
[PATCH v4 7/8] hw/misc/pca9552: Trace GPIO change events, Philippe Mathieu-Daudé, 2020/06/20
[PATCH v4 8/8] hw/misc/pca9552: Model qdev output GPIOs,
Philippe Mathieu-Daudé <=