FiiO M3K/X1000: add USB support

This only required a minor patch to the usb-designware driver due
to DMA requiring physical addresses -- on the X1000, these differ
from virtual addresses so we have to do the usual conversion.

Both the mass storage and HID drivers work, but there are a few
issues so this can't be considered 100% stable yet.

- Mass storage might not be detected properly on insertion,
  and USB has to be replugged before it shows up
- HID driver may occasionally panic or hang the machine

Change-Id: Ia3ce7591d5928ec7cbca7953abfef01bdbd873ef

1 files changed, 10 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/power-fiiom3k.c b/firmware/target/mips/ingenic_x1000/fiiom3k/power-fiiom3k.c
index a3760d145a..c346d16890 100644
--- a/firmware/target/mips/ingenic_x1000/fiiom3k/power-fiiom3k.c
+++ b/firmware/target/mips/ingenic_x1000/fiiom3k/power-fiiom3k.c
@@ -23,6 +23,9 @@
 #include "adc.h"
 #include "system.h"
 #include "kernel.h"
+#ifdef HAVE_USB_CHARGING_ENABLE
+# include "usb_core.h"
+#endif
 #include "axp173.h"
 #include "i2c-x1000.h"
 #include "gpio-x1000.h"
@@ -81,6 +84,13 @@ void power_init(void)
     mdelay(5);
 }
 
+#ifdef HAVE_USB_CHARGING_ENABLE
+void usb_charging_maxcurrent_change(int maxcurrent)
+{
+    axp173_set_charge_current(maxcurrent);
+}
+#endif
+
 void adc_init(void)
 {
 }