usb: gadget: f_sdp: Provide filesize env variable for downloaded images

Currently it's not possible to get filesize of downloaded images and
it's impossible to automate some tasks in scripts. So this patch adds
`filesize` environment variable with size (as hex number in bytes) of
the last successfully downloaded file via `sdp` command.

Cc: Lukasz Majewski <lukma@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Reviewed-by: Stefan Agner <stefan.agner@toradex.com>

diff --git a/drivers/usb/gadget/f_sdp.c b/drivers/usb/gadget/f_sdp.c
index 00a9f88a418b32dc70e870dfff57b8913435d3c8..ae97ab2b497399ae8840fb12327b7f61c6581736 100644 (file)
--- a/drivers/usb/gadget/f_sdp.c
+++ b/drivers/usb/gadget/f_sdp.c
@@ -100,6 +100,7 @@ struct f_sdp {
        enum sdp_state                  state;
        enum sdp_state                  next_state;
        u32                             dnl_address;
+       u32                             dnl_bytes;
        u32                             dnl_bytes_remaining;
        u32                             jmp_address;
        bool                            always_send_status;
@@ -276,6 +277,7 @@ static void sdp_rx_command_complete(struct usb_ep *ep, struct usb_request *req)
                sdp->state = SDP_STATE_RX_FILE_DATA;
                sdp->dnl_address = be32_to_cpu(cmd->addr);
                sdp->dnl_bytes_remaining = be32_to_cpu(cmd->cnt);
+               sdp->dnl_bytes = sdp->dnl_bytes_remaining;
                sdp->next_state = SDP_STATE_IDLE;
 
                printf("Downloading file of size %d to 0x%08x... ",
@@ -355,6 +357,9 @@ static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req)
        if (sdp->dnl_bytes_remaining)
                return;
 
+#ifndef CONFIG_SPL_BUILD
+       env_set_hex("filesize", sdp->dnl_bytes);
+#endif
        printf("done\n");
 
        switch (sdp->state) {