usb: mtu3: support suspend/resume for dual-role mode
Support suspend/resume for dual-role mode including the single
port and multi-ports supported by host controller, when the host
supports mult-ports, only port0 (u2/u3) is used to support dual
role mode.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1626340078-29111-14-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
index a0a6a18..7d528f3 100644
--- a/drivers/usb/mtu3/mtu3_host.c
+++ b/drivers/usb/mtu3/mtu3_host.c
@@ -8,7 +8,6 @@
*/
#include <linux/clk.h>
-#include <linux/iopoll.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
@@ -254,7 +253,6 @@ int ssusb_host_suspend(struct ssusb_mtk *ssusb)
int num_u3p = ssusb->u3_ports;
int num_u2p = ssusb->u2_ports;
u32 value;
- int ret;
int i;
/* power down u3 ports except skipped ones */
@@ -280,13 +278,7 @@ int ssusb_host_suspend(struct ssusb_mtk *ssusb)
/* power down host ip */
mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL1, SSUSB_IP_HOST_PDN);
- /* wait for host ip to sleep */
- ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, value,
- (value & SSUSB_IP_SLEEP_STS), 100, 100000);
- if (ret)
- dev_err(ssusb->dev, "ip sleep failed!!!\n");
-
- return ret;
+ return 0;
}
static void ssusb_host_setup(struct ssusb_mtk *ssusb)