usb: musb: dsps: add support for suspend and resume
The dsps platform needs to save save some registers at suspend time and
restore them after resume. This patch adds a struct for these registers,
and also lets the musb core know that the core registers need to be
saved as well.
We also have to explicitly de-assert the port reset upon resume on this
platform, but musb_port_reset() should not be called from glue layers.
Hence, introduce a flag in struct musb_hdrc_config for this.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index eb50525..a4ee1b5 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -76,6 +76,9 @@
unsigned dma:1 __deprecated; /* supports DMA */
unsigned vendor_req:1 __deprecated; /* vendor registers required */
+ /* need to explicitly de-assert the port reset after resume? */
+ unsigned host_port_deassert_reset_at_resume:1;
+
u8 num_eps; /* number of endpoints _with_ ep0 */
u8 dma_channels __deprecated; /* number of dma channels */
u8 dyn_fifo_size; /* dynamic size in bytes */