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[PATCH v6 9/9] hw/misc/pca9552: Model qdev output GPIOs
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v6 9/9] hw/misc/pca9552: Model qdev output GPIOs |
Date: |
Tue, 23 Jun 2020 09:27:23 +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 | 6 ++++++
2 files changed, 7 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 1c3ad57432..80caa9ec8f 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:
@@ -374,11 +377,14 @@ static void pca955x_initfn(Object *obj)
static void pca955x_realize(DeviceState *dev, Error **errp)
{
+ PCA955xClass *k = PCA955X_GET_CLASS(dev);
PCA955xState *s = PCA955X(dev);
if (!s->description) {
s->description = g_strdup("pca-unspecified");
}
+
+ qdev_init_gpio_out(dev, s->gpio, k->pin_count);
}
static Property pca955x_properties[] = {
--
2.21.3
- Re: [PATCH v6 1/9] hw/i2c/core: Add i2c_try_create_slave() and i2c_realize_and_unref(), (continued)
- [PATCH v6 2/9] hw/misc/pca9552: Rename 'nr_leds' as 'pin_count', Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 3/9] hw/misc/pca9552: Rename generic code as pca955x, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 4/9] hw/misc/pca9552: Add generic PCA955xClass, parent of TYPE_PCA9552, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 5/9] hw/misc/pca9552: Add a 'description' property for debugging purpose, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 7/9] hw/arm/aspeed: Describe each PCA9552 device, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 6/9] hw/misc/pca9552: Trace GPIO High/Low events, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 8/9] hw/misc/pca9552: Trace GPIO change events, Philippe Mathieu-Daudé, 2020/06/23
- [PATCH v6 9/9] hw/misc/pca9552: Model qdev output GPIOs,
Philippe Mathieu-Daudé <=
- Re: [PATCH v6 0/9] hw/misc/pca9552: Trace GPIO change events, Cédric Le Goater, 2020/06/23