diff options
| author | Artur Petrosyan <Arthur.Petrosyan@synopsys.com> | 2021-04-08 12:44:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-09 16:16:38 +0300 |
| commit | c9c394abfa8456808fd3a0083f7fd81c3188bd0c (patch) | |
| tree | 2c8d71183b05088072b9c3d30d32558ff782f3a7 /drivers/usb/dwc2/core_intr.c | |
| parent | 9ce9e5ad17d6c7cf943c9d365e8e12d6759e01db (diff) | |
| download | linux-c9c394abfa8456808fd3a0083f7fd81c3188bd0c.tar.xz | |
usb: dwc2: Update enter and exit partial power down functions
These are wrapper functions which are calling device or host
enter/exit partial power down functions.
This change is done because we need to separate device and
host partial power down functions as the programming flow
has a lot of difference between host and device. With this
update during partial power down exit driver relies on
backup value of "GOTGCTL_CURMODE_HOST" to determine the
mode of core before entering to PPD.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094446.6491BA022E@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc2/core_intr.c')
| -rw-r--r-- | drivers/usb/dwc2/core_intr.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 55f1d14fc414..1fb957ce6c25 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -315,9 +315,10 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) hsotg->lx_state); if (dwc2_is_device_mode(hsotg)) { - if (hsotg->lx_state == DWC2_L2) { - ret = dwc2_exit_partial_power_down(hsotg, true); - if (ret && (ret != -ENOTSUPP)) + if (hsotg->lx_state == DWC2_L2 && hsotg->in_ppd) { + ret = dwc2_exit_partial_power_down(hsotg, 0, + true); + if (ret) dev_err(hsotg->dev, "exit power_down failed\n"); } @@ -406,18 +407,16 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) if (dwc2_is_device_mode(hsotg)) { dev_dbg(hsotg->dev, "DSTS=0x%0x\n", dwc2_readl(hsotg, DSTS)); - if (hsotg->lx_state == DWC2_L2) { + if (hsotg->lx_state == DWC2_L2 && hsotg->in_ppd) { u32 dctl = dwc2_readl(hsotg, DCTL); - /* Clear Remote Wakeup Signaling */ dctl &= ~DCTL_RMTWKUPSIG; dwc2_writel(hsotg, dctl, DCTL); - ret = dwc2_exit_partial_power_down(hsotg, true); - if (ret && (ret != -ENOTSUPP)) - dev_err(hsotg->dev, "exit power_down failed\n"); - - /* Change to L0 state */ - hsotg->lx_state = DWC2_L0; + ret = dwc2_exit_partial_power_down(hsotg, 1, + true); + if (ret) + dev_err(hsotg->dev, + "exit partial_power_down failed\n"); call_gadget(hsotg, resume); } else { /* Change to L0 state */ |