On Fri, Jul 14, 2017 at 02:40:04PM -0700, Stephen Boyd wrote:
>
> @@ -175,6 +176,10 @@ static int host_start(struct ci_hdrc *ci)
> if (ci_otg_is_fsm_mode(ci)) {
> otg->host = &hcd->self;
> hcd->self.otg_port = 1;
> + } else {
> + ret = mux_control_select(ci->platdata->usb_switch, 1);
It is better to use MACRO for 1 and 0.
> + if (ret)
> + goto disable_reg;
> }
> }
>
> @@ -195,6 +200,8 @@ static void host_stop(struct ci_hdrc *ci)
> struct usb_hcd *hcd = ci->hcd;
>
> if (hcd) {
> + if (!ci_otg_is_fsm_mode(ci))
> + mux_control_deselect(ci->platdata->usb_switch);
> if (ci->platdata->notify_event)
> ci->platdata->notify_event(ci,
> CI_HDRC_CONTROLLER_STOPPED_EVENT);
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index d68b125796f9..deb18099e168 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -22,6 +22,7 @@
> #include <linux/usb/gadget.h>
> #include <linux/usb/otg-fsm.h>
> #include <linux/usb/chipidea.h>
> +#include <linux/mux/consumer.h>
>
> #include "ci.h"
> #include "udc.h"
> @@ -1964,16 +1965,26 @@ void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
>
> static int udc_id_switch_for_device(struct ci_hdrc *ci)
> {
> + int ret = 0;
> +
> if (ci->is_otg)
> /* Clear and enable BSV irq */
> hw_write_otgsc(ci, OTGSC_BSVIS | OTGSC_BSVIE,
> OTGSC_BSVIS | OTGSC_BSVIE);
>
> - return 0;
> + if (!ci_otg_is_fsm_mode(ci))
> + ret = mux_control_select(ci->platdata->usb_switch, 0);
> +
> + if (ci->is_otg && ret)
> + hw_write_otgsc(ci, OTGSC_BSVIE | OTGSC_BSVIS, OTGSC_BSVIS);
Should use !ret?
Peter
> +
> + return ret;
> }
>
> static void udc_id_switch_for_host(struct ci_hdrc *ci)
> {
> + mux_control_deselect(ci->platdata->usb_switch);
> +
> /*
> * host doesn't care B_SESSION_VALID event
> * so clear and disbale BSV irq
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index c5fdfcf99828..3b27e333de1d 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -9,6 +9,7 @@
> #include <linux/usb/otg.h>
>
> struct ci_hdrc;
> +struct mux_control;
>
> /**
> * struct ci_hdrc_cable - structure for external connector cable state tracking
> @@ -74,6 +75,7 @@ struct ci_hdrc_platform_data {
> /* VBUS and ID signal state tracking, using extcon framework */
> struct ci_hdrc_cable vbus_extcon;
> struct ci_hdrc_cable id_extcon;
> + struct mux_control *usb_switch;
> u32 phy_clkgate_delay_us;
> };
>
> --
> 2.10.0.297.gf6727b0
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
Best Regards,
Peter Chen
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