diff options
| author | Haim Dreyfuss <haim.dreyfuss@intel.com> | 2019-04-03 14:37:54 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2019-09-06 15:52:05 +0300 |
| commit | e5f3f215d07f0f802373a123cbd29c6387aa818d (patch) | |
| tree | 31b2bceee7ddfc858d15be014cfd3be39ecb9c33 /drivers/net/wireless/intel/iwlwifi/pcie/rx.c | |
| parent | 973ef19e9d506963cb882b9450da3703cf5892c0 (diff) | |
| download | linux-e5f3f215d07f0f802373a123cbd29c6387aa818d.tar.xz | |
iwlwifi: add support for suspend-resume flow for new device generation
The new device generation has a slightly different suspend resume flow
Currently, the way the driver instruct the device to move to D3 is by
sending D3_CONFIG_CMD.
Instead of using the host command the indication is by writing to the
doorbell interrupt.
The FW will respond with interrupt to indicate transition completion.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index fce8c500ec02..19dd075f2f63 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -2196,12 +2196,23 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) iwl_pcie_irq_handle_error(trans); } } else if (inta_hw & MSIX_HW_INT_CAUSES_REG_WAKEUP) { - /* uCode wakes up after power-down sleep */ - IWL_DEBUG_ISR(trans, "Wakeup interrupt\n"); - iwl_pcie_rxq_check_wrptr(trans); - iwl_pcie_txq_check_wrptrs(trans); + u32 sleep_notif = + le32_to_cpu(trans_pcie->prph_info->sleep_notif); + if (sleep_notif == IWL_D3_SLEEP_STATUS_SUSPEND || + sleep_notif == IWL_D3_SLEEP_STATUS_RESUME) { + IWL_DEBUG_ISR(trans, + "Sx interrupt: sleep notification = 0x%x\n", + sleep_notif); + trans_pcie->sx_complete = true; + wake_up(&trans_pcie->sx_waitq); + } else { + /* uCode wakes up after power-down sleep */ + IWL_DEBUG_ISR(trans, "Wakeup interrupt\n"); + iwl_pcie_rxq_check_wrptr(trans); + iwl_pcie_txq_check_wrptrs(trans); - isr_stats->wakeup++; + isr_stats->wakeup++; + } } if (inta_hw & MSIX_HW_INT_CAUSES_REG_IML) { |