diff options
| author | Mark Brown <broonie@kernel.org> | 2014-11-22 11:07:49 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-22 11:07:49 +0000 |
| commit | 7280e4222be4e88e2e8dd3cf797f093ffaebfb8b (patch) | |
| tree | 0c70042dff00ef136c449ae922e48b660b17c272 /drivers/net/wireless/iwlwifi/pcie/trans.c | |
| parent | 3070bdc3c302c80996502639e03a2e550571e152 (diff) | |
| parent | 1f0f80ecae848b0ca2ca632e94568721494f09f0 (diff) | |
Merge branch 'linux-linaro-lsk-v3.14' into linux-linaro-lsk-v3.14-androidlsk-v3.14-android-14.11
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/trans.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 16be0c07c64a..fb62927ca44d 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -94,6 +94,7 @@ static void iwl_pcie_apm_config(struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); u16 lctl; + u16 cap; /* * HW bug W/A for instability in PCIe bus L0S->L1 transition. @@ -104,16 +105,17 @@ static void iwl_pcie_apm_config(struct iwl_trans *trans) * power savings, even without L1. */ pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl); - if (lctl & PCI_EXP_LNKCTL_ASPM_L1) { - /* L1-ASPM enabled; disable(!) L0S */ + if (lctl & PCI_EXP_LNKCTL_ASPM_L1) iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); - dev_info(trans->dev, "L1 Enabled; Disabling L0S\n"); - } else { - /* L1-ASPM disabled; enable(!) L0S */ + else iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); - dev_info(trans->dev, "L1 Disabled; Enabling L0S\n"); - } trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); + + pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap); + trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN; + dev_info(trans->dev, "L1 %sabled - LTR %sabled\n", + (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis", + trans->ltr_enabled ? "En" : "Dis"); } /* |