libertas: support boot commands to write persistent firmware and bootloader

Add locking and non-locking versions of if_usb_prog_firmware to support
programming firmware after and before driver bring-up respectively.  Add more
suitable error codes for firmware programming process.  Add capability checks
for persistent features before attempting to use them.

Based on patches from Brajesh Dave and Priyank Singh.

Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas/if_usb.h b/drivers/net/wireless/libertas/if_usb.h
index 5771a83a43f0..5ba0aee0eb2f 100644
--- a/drivers/net/wireless/libertas/if_usb.h
+++ b/drivers/net/wireless/libertas/if_usb.h
@@ -30,6 +30,7 @@ struct bootcmd
 
 #define BOOT_CMD_RESP_OK                0x0001
 #define BOOT_CMD_RESP_FAIL              0x0000
+#define BOOT_CMD_RESP_NOT_SUPPORTED     0x0002
 
 struct bootcmdresp
 {
@@ -50,6 +51,10 @@ struct if_usb_card {
         uint8_t ep_in;
         uint8_t ep_out;
 
+        /* bootcmdresp == 0 means command is pending
+         * bootcmdresp < 0 means error
+         * bootcmdresp > 0 is a BOOT_CMD_RESP_* from firmware
+         */
         int8_t bootcmdresp;
 
         int ep_in_size;