Hi Sandeep,
On Thu, Jul 09, 2020 at 12:40:16AM +0530, Sandeep Maheswaram wrote:
> configure interrupts based on hs_phy_flag. Set genpd active wakeup flag
> for usb gdsc if wakeup capable devices are connected.
as Stephen remarked, please describe why this patch is doing what
it is doing.
> Signed-off-by: Sandeep Maheswaram <s...@codeaurora.org>
> ---
> drivers/usb/dwc3/dwc3-qcom.c | 73
> ++++++++++++++++++++++++++++++++++----------
> 1 file changed, 57 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
> index 1dfd024..8902670 100644
> --- a/drivers/usb/dwc3/dwc3-qcom.c
> +++ b/drivers/usb/dwc3/dwc3-qcom.c
> @@ -16,9 +16,11 @@
> #include <linux/of_platform.h>
> #include <linux/platform_device.h>
> #include <linux/phy/phy.h>
> +#include <linux/pm_domain.h>
> #include <linux/usb/of.h>
> #include <linux/reset.h>
> #include <linux/iopoll.h>
> +#include <linux/usb/hcd.h>
>
> #include "core.h"
>
> @@ -192,21 +194,34 @@ static int dwc3_qcom_register_extcon(struct dwc3_qcom
> *qcom)
>
> static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom)
> {
> + struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
> +
> if (qcom->hs_phy_irq) {
> disable_irq_wake(qcom->hs_phy_irq);
> disable_irq_nosync(qcom->hs_phy_irq);
> }
nit: add empty line
> + if (dwc->hs_phy_flags & PHY_MODE_USB_HOST_LS) {
> + if (qcom->dp_hs_phy_irq) {
> + disable_irq_wake(qcom->dp_hs_phy_irq);
> + disable_irq_nosync(qcom->dp_hs_phy_irq);
> + }
> + } else if (dwc->hs_phy_flags & PHY_MODE_USB_HOST_HS) {
> + if (qcom->dm_hs_phy_irq) {
> + disable_irq_wake(qcom->dm_hs_phy_irq);
> + disable_irq_nosync(qcom->dm_hs_phy_irq);
> + }
> + } else {
>
delete empty line
> - if (qcom->dp_hs_phy_irq) {
> - disable_irq_wake(qcom->dp_hs_phy_irq);
> - disable_irq_nosync(qcom->dp_hs_phy_irq);
> - }
> + if (qcom->dp_hs_phy_irq) {
> + disable_irq_wake(qcom->dp_hs_phy_irq);
> + disable_irq_nosync(qcom->dp_hs_phy_irq);
> + }
>
> - if (qcom->dm_hs_phy_irq) {
> - disable_irq_wake(qcom->dm_hs_phy_irq);
> - disable_irq_nosync(qcom->dm_hs_phy_irq);
> + if (qcom->dm_hs_phy_irq) {
> + disable_irq_wake(qcom->dm_hs_phy_irq);
> + disable_irq_nosync(qcom->dm_hs_phy_irq);
> + }
> }
> -
> if (qcom->ss_phy_irq) {
> disable_irq_wake(qcom->ss_phy_irq);
> disable_irq_nosync(qcom->ss_phy_irq);
> @@ -215,21 +230,34 @@ static void dwc3_qcom_disable_interrupts(struct
> dwc3_qcom *qcom)
>
> static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
> {
> + struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
> +
> if (qcom->hs_phy_irq) {
> enable_irq(qcom->hs_phy_irq);
> enable_irq_wake(qcom->hs_phy_irq);
> }
nit: add empty line
> + if (dwc->hs_phy_flags & PHY_MODE_USB_HOST_LS) {
> + if (qcom->dp_hs_phy_irq) {
> + enable_irq(qcom->dp_hs_phy_irq);
> + enable_irq_wake(qcom->dp_hs_phy_irq);
> + }
> + } else if (dwc->hs_phy_flags & PHY_MODE_USB_HOST_HS) {
> + if (qcom->dm_hs_phy_irq) {
> + enable_irq(qcom->dm_hs_phy_irq);
> + enable_irq_wake(qcom->dm_hs_phy_irq);
> + }
> + } else {
>
delete empty line
> - if (qcom->dp_hs_phy_irq) {
> - enable_irq(qcom->dp_hs_phy_irq);
> - enable_irq_wake(qcom->dp_hs_phy_irq);
> - }
> + if (qcom->dp_hs_phy_irq) {
> + enable_irq(qcom->dp_hs_phy_irq);
> + enable_irq_wake(qcom->dp_hs_phy_irq);
> + }
>
> - if (qcom->dm_hs_phy_irq) {
> - enable_irq(qcom->dm_hs_phy_irq);
> - enable_irq_wake(qcom->dm_hs_phy_irq);
> + if (qcom->dm_hs_phy_irq) {
> + enable_irq(qcom->dm_hs_phy_irq);
> + enable_irq_wake(qcom->dm_hs_phy_irq);
> + }
> }
> -
> if (qcom->ss_phy_irq) {
> enable_irq(qcom->ss_phy_irq);
> enable_irq_wake(qcom->ss_phy_irq);
> @@ -240,6 +268,14 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
> {
> u32 val;
> int i;
> + struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
> + struct usb_hcd *hcd = platform_get_drvdata(dwc->xhci);
> + struct generic_pm_domain *genpd;
> +
> + genpd = pd_to_genpd(qcom->dev->pm_domain);
nit: assign in declaration?
> +
> + if (genpd && usb_wakeup_enabled_descendants(hcd->self.root_hub))
> + genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
>
> if (qcom->is_suspended)
> return 0;
> @@ -261,6 +297,11 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
> {
> int ret;
> int i;
> + struct generic_pm_domain *genpd;
> +
> + genpd = pd_to_genpd(qcom->dev->pm_domain);
> + if (genpd)
> + genpd->flags &= !GENPD_FLAG_ACTIVE_WAKEUP;
~GENPD_FLAG_ACTIVE_WAKEUP; ?
