diff options
| author | Yan-Hsuan Chuang <yhchuang@realtek.com> | 2019-10-02 05:31:24 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-10-02 07:33:46 +0300 |
| commit | 27e117e4b01b5e699a40a3891b4f6924f99011d7 (patch) | |
| tree | 390c4286c81470c4b91343d2db74d6d7d0b8c3c4 /drivers/net/wireless/realtek/rtw88/hci.h | |
| parent | 37ba5de2e731afbfe606d7192a8aeba625abdaba (diff) | |
| download | linux-27e117e4b01b5e699a40a3891b4f6924f99011d7.tar.xz | |
rtw88: add deep power save support
Deep power save allows firmware/hardware to operate in a
lower power state. And the deep power save mode depends on
LPS mode. So, before entering deep PS, driver must first
enter LPS mode.
Under Deep PS, most of hardware functions are shutdown,
driver will not be able to read/write registers and transfer
data to the device. Hence TX path must be protected by each
interface. Take PCI for example, DMA engine should be idle,
and no nore activities on the PCI bus.
If driver wants to operate on the device, such as register
read/write, it must first acquire the mutex lock and wake
up from Deep PS, otherwise the behavior is undefined.
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/hci.h')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/hci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/hci.h b/drivers/net/wireless/realtek/rtw88/hci.h index aba329c9d0cf..4afbf0d163d1 100644 --- a/drivers/net/wireless/realtek/rtw88/hci.h +++ b/drivers/net/wireless/realtek/rtw88/hci.h @@ -13,6 +13,7 @@ struct rtw_hci_ops { int (*setup)(struct rtw_dev *rtwdev); int (*start)(struct rtw_dev *rtwdev); void (*stop)(struct rtw_dev *rtwdev); + void (*deep_ps)(struct rtw_dev *rtwdev, bool enter); int (*write_data_rsvd_page)(struct rtw_dev *rtwdev, u8 *buf, u32 size); int (*write_data_h2c)(struct rtw_dev *rtwdev, u8 *buf, u32 size); @@ -47,6 +48,11 @@ static inline void rtw_hci_stop(struct rtw_dev *rtwdev) rtwdev->hci.ops->stop(rtwdev); } +static inline void rtw_hci_deep_ps(struct rtw_dev *rtwdev, bool enter) +{ + rtwdev->hci.ops->deep_ps(rtwdev, enter); +} + static inline int rtw_hci_write_data_rsvd_page(struct rtw_dev *rtwdev, u8 *buf, u32 size) { |