icE1usb fw: Update E1 core start/stop procedure
Previously we were just doing a hard reset, calling init again.
And to stop, it was a bit harsh as well, just calling init with
0 as argument, not cleaning pending descriptors and such.
Now, the HW is initialized once and there is proper startup and
shutdown procedure, leaving things in the proper state.
Init of e1 hardware (call to e1_init) is also delegated to usb_e1
since it's that module that handles all state changes and config
so it makes sense it handles init too rather than calling it from
fw_app.c
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I639f90ce3488a1a08e87854e74e0586010264f5d
diff --git a/firmware/ice40-riscv/icE1usb/e1.h b/firmware/ice40-riscv/icE1usb/e1.h
index a44c319..0ed43c4 100644
--- a/firmware/ice40-riscv/icE1usb/e1.h
+++ b/firmware/ice40-riscv/icE1usb/e1.h
@@ -11,6 +11,9 @@
/* control */
void e1_init(int port, uint16_t rx_cr, uint16_t tx_cr);
+void e1_start(int port);
+void e1_stop(int port);
+
void e1_poll(int port);
void e1_debug_print(int port, bool data);