diff options
| author | Artur Petrosyan <Arthur.Petrosyan@synopsys.com> | 2021-04-13 10:36:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-13 13:25:11 +0300 |
| commit | 012466fc8ccc013f9a3320428043e096dc581b36 (patch) | |
| tree | 6a4d7659dea8ac64db7b51801a9cc45abb5c5f10 /drivers/usb/dwc2/core.h | |
| parent | 5367f82a212305c35b35303a8a21ca348f653ca3 (diff) | |
| download | linux-012466fc8ccc013f9a3320428043e096dc581b36.tar.xz | |
usb: dwc2: Add device clock gating support functions
Added device clock gating support functions according
programming guide.
Moved "bus_suspended" flag to "dwc2_hsotg" struct because
we need to set that flag while entering to clock gating
in case when the driver is built in peripheral mode.
Added function names:
dwc2_gadget_enter_clock_gating()
dwc2_gadget_exit_clock_gating()
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210413073607.F41E8A0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc2/core.h')
| -rw-r--r-- | drivers/usb/dwc2/core.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 5a7850482e57..e5597796dca4 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -866,6 +866,7 @@ struct dwc2_hregs_backup { * @ll_hw_enabled: Status of low-level hardware resources. * @hibernated: True if core is hibernated * @in_ppd: True if core is partial power down mode. + * @bus_suspended: True if bus is suspended * @reset_phy_on_wake: Quirk saying that we should assert PHY reset on a * remote wakeup. * @phy_off_for_suspend: Status of whether we turned the PHY off at suspend. @@ -1023,7 +1024,6 @@ struct dwc2_hregs_backup { * a pointer to an array of register definitions, the * array size and the base address where the register bank * is to be found. - * @bus_suspended: True if bus is suspended * @last_frame_num: Number of last frame. Range from 0 to 32768 * @frame_num_array: Used only if CONFIG_USB_DWC2_TRACK_MISSED_SOFS is * defined, for missed SOFs tracking. Array holds that @@ -1062,6 +1062,7 @@ struct dwc2_hsotg { unsigned int ll_hw_enabled:1; unsigned int hibernated:1; unsigned int in_ppd:1; + bool bus_suspended; unsigned int reset_phy_on_wake:1; unsigned int need_phy_for_wake:1; unsigned int phy_off_for_suspend:1; @@ -1145,7 +1146,6 @@ struct dwc2_hsotg { unsigned long hs_periodic_bitmap[ DIV_ROUND_UP(DWC2_HS_SCHEDULE_US, BITS_PER_LONG)]; u16 periodic_qh_count; - bool bus_suspended; bool new_connection; u16 last_frame_num; @@ -1415,6 +1415,9 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, int dwc2_gadget_enter_partial_power_down(struct dwc2_hsotg *hsotg); int dwc2_gadget_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore); +void dwc2_gadget_enter_clock_gating(struct dwc2_hsotg *hsotg); +void dwc2_gadget_exit_clock_gating(struct dwc2_hsotg *hsotg, + int rem_wakeup); int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg); int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg); @@ -1453,6 +1456,9 @@ static inline int dwc2_gadget_enter_partial_power_down(struct dwc2_hsotg *hsotg) static inline int dwc2_gadget_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore) { return 0; } +static inline void dwc2_gadget_enter_clock_gating(struct dwc2_hsotg *hsotg) {} +static inline void dwc2_gadget_exit_clock_gating(struct dwc2_hsotg *hsotg, + int rem_wakeup) {} static inline int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg) { return 0; } static inline int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg) |