4 files changed, 125 insertions, 0 deletions
diff --git a/include/hw/gpio/pca9552.h b/include/hw/gpio/pca9552.h
new file mode 100644
index 0000000000..c36525f0c3
--- /dev/null
+++ b/include/hw/gpio/pca9552.h
@@ -0,0 +1,38 @@
+/*
+ * PCA9552 I2C LED blinker
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ */
+#ifndef PCA9552_H
+#define PCA9552_H
+
+#include "hw/i2c/i2c.h"
+#include "qom/object.h"
+
+#define TYPE_PCA9552 "pca9552"
+#define TYPE_PCA955X "pca955x"
+typedef struct PCA955xState PCA955xState;
+DECLARE_INSTANCE_CHECKER(PCA955xState, PCA955X,
+                         TYPE_PCA955X)
+
+#define PCA955X_NR_REGS 10
+#define PCA955X_PIN_COUNT_MAX 16
+
+struct PCA955xState {
+    /*< private >*/
+    I2CSlave i2c;
+    /*< public >*/
+
+    uint8_t len;
+    uint8_t pointer;
+
+    uint8_t regs[PCA955X_NR_REGS];
+    qemu_irq gpio_out[PCA955X_PIN_COUNT_MAX];
+    uint8_t ext_state[PCA955X_PIN_COUNT_MAX];
+    char *description; /* For debugging purpose only */
+};
+
+#endif
diff --git a/include/hw/gpio/pca9552_regs.h b/include/hw/gpio/pca9552_regs.h
new file mode 100644
index 0000000000..d8051cfbd6
--- /dev/null
+++ b/include/hw/gpio/pca9552_regs.h
@@ -0,0 +1,32 @@
+/*
+ * PCA9552 I2C LED blinker registers
+ *
+ * Copyright (c) 2017-2018, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ */
+#ifndef PCA9552_REGS_H
+#define PCA9552_REGS_H
+
+/*
+ * Bits [0:3] are used to address a specific register.
+ */
+#define PCA9552_INPUT0   0 /* read only input register 0 */
+#define PCA9552_INPUT1   1 /* read only input register 1  */
+#define PCA9552_PSC0     2 /* read/write frequency prescaler 0 */
+#define PCA9552_PWM0     3 /* read/write PWM register 0 */
+#define PCA9552_PSC1     4 /* read/write frequency prescaler 1 */
+#define PCA9552_PWM1     5 /* read/write PWM register 1 */
+#define PCA9552_LS0      6 /* read/write LED0 to LED3 selector */
+#define PCA9552_LS1      7 /* read/write LED4 to LED7 selector */
+#define PCA9552_LS2      8 /* read/write LED8 to LED11 selector */
+#define PCA9552_LS3      9 /* read/write LED12 to LED15 selector */
+
+/*
+ * Bit [4] is used to activate the Auto-Increment option of the
+ * register address
+ */
+#define PCA9552_AUTOINC  (1 << 4)
+
+#endif
diff --git a/include/hw/gpio/pca9554.h b/include/hw/gpio/pca9554.h
new file mode 100644
index 0000000000..54bfc4c4c7
--- /dev/null
+++ b/include/hw/gpio/pca9554.h
@@ -0,0 +1,36 @@
+/*
+ * PCA9554 I/O port
+ *
+ * Copyright (c) 2023, IBM Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef PCA9554_H
+#define PCA9554_H
+
+#include "hw/i2c/i2c.h"
+#include "qom/object.h"
+
+#define TYPE_PCA9554 "pca9554"
+typedef struct PCA9554State PCA9554State;
+DECLARE_INSTANCE_CHECKER(PCA9554State, PCA9554,
+                         TYPE_PCA9554)
+
+#define PCA9554_NR_REGS 4
+#define PCA9554_PIN_COUNT 8
+
+struct PCA9554State {
+    /*< private >*/
+    I2CSlave i2c;
+    /*< public >*/
+
+    uint8_t len;
+    uint8_t pointer;
+
+    uint8_t regs[PCA9554_NR_REGS];
+    qemu_irq gpio_out[PCA9554_PIN_COUNT];
+    uint8_t ext_state[PCA9554_PIN_COUNT];
+    char *description; /* For debugging purpose only */
+};
+
+#endif
diff --git a/include/hw/gpio/pca9554_regs.h b/include/hw/gpio/pca9554_regs.h
new file mode 100644
index 0000000000..602c4a90e0
--- /dev/null
+++ b/include/hw/gpio/pca9554_regs.h
@@ -0,0 +1,19 @@
+/*
+ * PCA9554 I/O port registers
+ *
+ * Copyright (c) 2023, IBM Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef PCA9554_REGS_H
+#define PCA9554_REGS_H
+
+/*
+ * Bits [0:1] are used to address a specific register.
+ */
+#define PCA9554_INPUT       0 /* read only input register */
+#define PCA9554_OUTPUT      1 /* read/write pin output state */
+#define PCA9554_POLARITY    2 /* Set polarity of input register */
+#define PCA9554_CONFIG      3 /* Set pins as inputs our ouputs */
+
+#endif