diff options
Diffstat (limited to 'chip/stm32/usb_spi.h')
| -rw-r--r-- | chip/stm32/usb_spi.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/chip/stm32/usb_spi.h b/chip/stm32/usb_spi.h index 591975234d..a1be2c11fb 100644 --- a/chip/stm32/usb_spi.h +++ b/chip/stm32/usb_spi.h @@ -366,11 +366,18 @@ enum usb_spi_request { * If a platform has a small maximum SPI transfer size, it can be optimized * by setting these limits to the maximum transfer size. */ +#ifdef CONFIG_USB_SPI_BUFFER_SIZE +#define USB_SPI_BUFFER_SIZE CONFIG_USB_SPI_BUFFER_SIZE +#else #define USB_SPI_BUFFER_SIZE (USB_SPI_PAYLOAD_SIZE_V2_START + \ (4 * USB_SPI_PAYLOAD_SIZE_V2_CONTINUE)) +#endif #define USB_SPI_MAX_WRITE_COUNT USB_SPI_BUFFER_SIZE #define USB_SPI_MAX_READ_COUNT USB_SPI_BUFFER_SIZE +/* Protocol uses two-byte length fields. Larger buffer makes no sense. */ +BUILD_ASSERT(USB_SPI_BUFFER_SIZE <= 65536); + struct usb_spi_transfer_ctx { /* Address of transfer buffer. */ uint8_t *buffer; @@ -520,7 +527,7 @@ struct usb_spi_config { .bInterfaceClass = USB_CLASS_VENDOR_SPEC, \ .bInterfaceSubClass = USB_SUBCLASS_GOOGLE_SPI, \ .bInterfaceProtocol = USB_PROTOCOL_GOOGLE_SPI, \ - .iInterface = 0, \ + .iInterface = USB_STR_SPI_NAME, \ }; \ const struct usb_endpoint_descriptor \ USB_EP_DESC(INTERFACE, 0) = { \ |