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iodev: Make iodev_can_read() return the queued byte count

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-08-23 17:00:14 +09:00
parent 3bdf036161
commit 31bf2b5ac9
6 changed files with 7 additions and 7 deletions
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2
src/iodev.c
View file

@ -30,7 +30,7 @@ char con_buf[CONSOLE_BUFFER_SIZE];
size_t con_wp;
size_t con_rp[IODEV_MAX];
bool iodev_can_read(iodev_id_t id)
ssize_t iodev_can_read(iodev_id_t id)
{
if (!iodevs[id]->ops->can_read)
return false;

4
src/iodev.h
View file

@ -22,7 +22,7 @@ typedef enum _iodev_usage_t {
} iodev_usage_t;
struct iodev_ops {
bool (*can_read)(void *opaque);
ssize_t (*can_read)(void *opaque);
bool (*can_write)(void *opaque);
ssize_t (*read)(void *opaque, void *buf, size_t length);
ssize_t (*write)(void *opaque, const void *buf, size_t length);
@ -40,7 +40,7 @@ struct iodev {
extern struct iodev *iodevs[IODEV_MAX];
bool iodev_can_read(iodev_id_t id);
ssize_t iodev_can_read(iodev_id_t id);
bool iodev_can_write(iodev_id_t id);
ssize_t iodev_read(iodev_id_t id, void *buf, size_t length);
ssize_t iodev_write(iodev_id_t id, const void *buf, size_t length);

2
src/uart.c
View file

@ -111,7 +111,7 @@ static bool uart_iodev_can_write(void *opaque)
return true;
}
static bool uart_iodev_can_read(void *opaque)
static ssize_t uart_iodev_can_read(void *opaque)
{
UNUSED(opaque);
return read32(UART_BASE + UTRSTAT) & 0x01;

2
src/usb.c
View file

@ -162,7 +162,7 @@ dwc3_dev_t *usb_iodev_bringup(u32 idx)
}
#define USB_IODEV_WRAPPER(name, pipe) \
static bool usb_##name##_can_read(void *dev) \
static ssize_t usb_##name##_can_read(void *dev) \
{ \
return usb_dwc3_can_read(dev, pipe); \
} \

2
src/usb_dwc3.c
View file

@ -1365,7 +1365,7 @@ size_t usb_dwc3_read(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe, void *buf, size_t
return recvd;
}
bool usb_dwc3_can_read(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe)
ssize_t usb_dwc3_can_read(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe)
{
if (!dev || !dev->ready)
return false;

2
src/usb_dwc3.h
View file

@ -19,7 +19,7 @@ void usb_dwc3_shutdown(dwc3_dev_t *dev);
void usb_dwc3_handle_events(dwc3_dev_t *dev);
bool usb_dwc3_can_read(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe);
ssize_t usb_dwc3_can_read(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe);
bool usb_dwc3_can_write(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe);
u8 usb_dwc3_getbyte(dwc3_dev_t *dev, cdc_acm_pipe_id_t pipe);