13a29355aSViresh Kumar /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 23a29355aSViresh Kumar 33a29355aSViresh Kumar #ifndef _LINUX_VIRTIO_GPIO_H 43a29355aSViresh Kumar #define _LINUX_VIRTIO_GPIO_H 53a29355aSViresh Kumar 63a29355aSViresh Kumar #include <linux/types.h> 73a29355aSViresh Kumar 8eff5cdd7SViresh Kumar /* Virtio GPIO Feature bits */ 9eff5cdd7SViresh Kumar #define VIRTIO_GPIO_F_IRQ 0 10eff5cdd7SViresh Kumar 113a29355aSViresh Kumar /* Virtio GPIO request types */ 123a29355aSViresh Kumar #define VIRTIO_GPIO_MSG_GET_NAMES 0x0001 133a29355aSViresh Kumar #define VIRTIO_GPIO_MSG_GET_DIRECTION 0x0002 143a29355aSViresh Kumar #define VIRTIO_GPIO_MSG_SET_DIRECTION 0x0003 153a29355aSViresh Kumar #define VIRTIO_GPIO_MSG_GET_VALUE 0x0004 163a29355aSViresh Kumar #define VIRTIO_GPIO_MSG_SET_VALUE 0x0005 17eff5cdd7SViresh Kumar #define VIRTIO_GPIO_MSG_IRQ_TYPE 0x0006 183a29355aSViresh Kumar 193a29355aSViresh Kumar /* Possible values of the status field */ 203a29355aSViresh Kumar #define VIRTIO_GPIO_STATUS_OK 0x0 213a29355aSViresh Kumar #define VIRTIO_GPIO_STATUS_ERR 0x1 223a29355aSViresh Kumar 233a29355aSViresh Kumar /* Direction types */ 243a29355aSViresh Kumar #define VIRTIO_GPIO_DIRECTION_NONE 0x00 253a29355aSViresh Kumar #define VIRTIO_GPIO_DIRECTION_OUT 0x01 263a29355aSViresh Kumar #define VIRTIO_GPIO_DIRECTION_IN 0x02 273a29355aSViresh Kumar 28eff5cdd7SViresh Kumar /* Virtio GPIO IRQ types */ 29eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_NONE 0x00 30eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_EDGE_RISING 0x01 31eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_EDGE_FALLING 0x02 32eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_EDGE_BOTH 0x03 33eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_LEVEL_HIGH 0x04 34eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_TYPE_LEVEL_LOW 0x08 35eff5cdd7SViresh Kumar 363a29355aSViresh Kumar struct virtio_gpio_config { 3717395d77SViresh Kumar __le16 ngpio; 383a29355aSViresh Kumar __u8 padding[2]; 3917395d77SViresh Kumar __le32 gpio_names_size; 40*7d0003daSMichael S. Tsirkin }; 413a29355aSViresh Kumar 423a29355aSViresh Kumar /* Virtio GPIO Request / Response */ 433a29355aSViresh Kumar struct virtio_gpio_request { 4417395d77SViresh Kumar __le16 type; 4517395d77SViresh Kumar __le16 gpio; 4617395d77SViresh Kumar __le32 value; 473a29355aSViresh Kumar }; 483a29355aSViresh Kumar 493a29355aSViresh Kumar struct virtio_gpio_response { 503a29355aSViresh Kumar __u8 status; 513a29355aSViresh Kumar __u8 value; 523a29355aSViresh Kumar }; 533a29355aSViresh Kumar 543a29355aSViresh Kumar struct virtio_gpio_response_get_names { 553a29355aSViresh Kumar __u8 status; 563a29355aSViresh Kumar __u8 value[]; 573a29355aSViresh Kumar }; 583a29355aSViresh Kumar 59eff5cdd7SViresh Kumar /* Virtio GPIO IRQ Request / Response */ 60eff5cdd7SViresh Kumar struct virtio_gpio_irq_request { 61eff5cdd7SViresh Kumar __le16 gpio; 62eff5cdd7SViresh Kumar }; 63eff5cdd7SViresh Kumar 64eff5cdd7SViresh Kumar struct virtio_gpio_irq_response { 65eff5cdd7SViresh Kumar __u8 status; 66eff5cdd7SViresh Kumar }; 67eff5cdd7SViresh Kumar 68eff5cdd7SViresh Kumar /* Possible values of the interrupt status field */ 69eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_STATUS_INVALID 0x0 70eff5cdd7SViresh Kumar #define VIRTIO_GPIO_IRQ_STATUS_VALID 0x1 71eff5cdd7SViresh Kumar 723a29355aSViresh Kumar #endif /* _LINUX_VIRTIO_GPIO_H */ 73