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[PATCH v5 9/9] hw/misc/pca9552: Model qdev output GPIOs
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v5 9/9] hw/misc/pca9552: Model qdev output GPIOs |
Date: |
Mon, 22 Jun 2020 20:34:28 +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.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
include/hw/misc/pca9552.h | 1 +
hw/misc/pca9552.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h
index bf1a589137..600356fbf9 100644
--- a/include/hw/misc/pca9552.h
+++ b/include/hw/misc/pca9552.h
@@ -27,6 +27,7 @@ typedef struct PCA955xState {
uint8_t pointer;
uint8_t regs[PCA955X_NR_REGS];
+ qemu_irq gpio[PCA955X_PIN_COUNT_MAX];
char *description; /* For debugging purpose only */
} PCA955xState;
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
index 5997eef8b2..38c04c54dc 100644
--- a/hw/misc/pca9552.c
+++ b/hw/misc/pca9552.c
@@ -17,6 +17,7 @@
#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"
@@ -111,9 +112,11 @@ static void pca955x_update_pin_input(PCA955xState *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:
@@ -377,6 +380,8 @@ static void pca955x_realize(DeviceState *dev, Error **errp)
PCA955xState *s = PCA955X(dev);
assert(k->pin_count <= PCA955X_PIN_COUNT_MAX);
+ qdev_init_gpio_out(dev, s->gpio, k->pin_count);
+
if (!s->description) {
s->description = g_strdup("pca-unspecified");
}
--
2.21.3
- [PATCH v5 4/9] hw/misc/pca9552: Add generic PCA955xClass, parent of TYPE_PCA9552, (continued)
- [PATCH v5 4/9] hw/misc/pca9552: Add generic PCA955xClass, parent of TYPE_PCA9552, Philippe Mathieu-Daudé, 2020/06/22
- [PATCH v5 5/9] hw/misc/pca9552: Add a 'description' property for debugging purpose, Philippe Mathieu-Daudé, 2020/06/22
- [PATCH v5 6/9] hw/misc/pca9552: Trace GPIO High/Low events, Philippe Mathieu-Daudé, 2020/06/22
- [PATCH v5 7/9] hw/arm/aspeed: Describe each PCA9552 device, Philippe Mathieu-Daudé, 2020/06/22
- [PATCH v5 8/9] hw/misc/pca9552: Trace GPIO change events, Philippe Mathieu-Daudé, 2020/06/22
- [PATCH v5 9/9] hw/misc/pca9552: Model qdev output GPIOs,
Philippe Mathieu-Daudé <=