diff options
Diffstat (limited to '0011-iwlwifi-pcie-move-power-gating-workaround-earlier-in-the-flow.patch')
| -rw-r--r-- | 0011-iwlwifi-pcie-move-power-gating-workaround-earlier-in-the-flow.patch | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/0011-iwlwifi-pcie-move-power-gating-workaround-earlier-in-the-flow.patch b/0011-iwlwifi-pcie-move-power-gating-workaround-earlier-in-the-flow.patch deleted file mode 100644 index 457542b..0000000 --- a/0011-iwlwifi-pcie-move-power-gating-workaround-earlier-in-the-flow.patch +++ /dev/null @@ -1,119 +0,0 @@ -From 9894b27702c2e6090213f84db3e3d47f191253cd Mon Sep 17 00:00:00 2001 -From: Luca Coelho <luciano.coelho@intel.com> -Date: Thu, 5 Dec 2019 09:03:54 +0200 -Subject: iwlwifi: pcie: move power gating workaround earlier in the flow - -We need to reset the NIC after setting the bits to enable power -gating and that cannot be done too late in the flow otherwise it -cleans other registers and things that were already configured, -causing initialization to fail. - -In order to fix this, move the function to the common code in trans.c -so it can be called directly from there at an earlier point, just -after the reset we already do during initialization. - -Fixes: 9a47cb988338 ("iwlwifi: pcie: add workaround for power gating in integrated 22000") -Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205719 -Cc: stable@ver.kernel.org # 5.4+ -Reported-by: Anders Kaseorg <andersk@mit.edu> -Signed-off-by: Luca Coelho <luciano.coelho@intel.com> -Signed-off-by: Kalle Valo <kvalo@codeaurora.org> ---- - .../net/wireless/intel/iwlwifi/pcie/trans-gen2.c | 25 ------------------ - drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 30 ++++++++++++++++++++++ - 2 files changed, 30 insertions(+), 25 deletions(-) - -diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c -index ca3bb4d65b00..df8455f14e4d 100644 ---- a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c -+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c -@@ -57,24 +57,6 @@ - #include "internal.h" - #include "fw/dbg.h" - --static int iwl_pcie_gen2_force_power_gating(struct iwl_trans *trans) --{ -- iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, -- HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); -- udelay(20); -- iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, -- HPM_HIPM_GEN_CFG_CR_PG_EN | -- HPM_HIPM_GEN_CFG_CR_SLP_EN); -- udelay(20); -- iwl_clear_bits_prph(trans, HPM_HIPM_GEN_CFG, -- HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); -- -- iwl_trans_sw_reset(trans); -- iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); -- -- return 0; --} -- - /* - * Start up NIC's basic functionality after it has been reset - * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop()) -@@ -110,13 +92,6 @@ int iwl_pcie_gen2_apm_init(struct iwl_trans *trans) - - iwl_pcie_apm_config(trans); - -- if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_22000 && -- trans->cfg->integrated) { -- ret = iwl_pcie_gen2_force_power_gating(trans); -- if (ret) -- return ret; -- } -- - ret = iwl_finish_nic_init(trans, trans->trans_cfg); - if (ret) - return ret; -diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c -index 6961f00ff812..d3db38c3095b 100644 ---- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c -+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c -@@ -1783,6 +1783,29 @@ static int iwl_trans_pcie_clear_persistence_bit(struct iwl_trans *trans) - return 0; - } - -+static int iwl_pcie_gen2_force_power_gating(struct iwl_trans *trans) -+{ -+ int ret; -+ -+ ret = iwl_finish_nic_init(trans, trans->trans_cfg); -+ if (ret < 0) -+ return ret; -+ -+ iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, -+ HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); -+ udelay(20); -+ iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, -+ HPM_HIPM_GEN_CFG_CR_PG_EN | -+ HPM_HIPM_GEN_CFG_CR_SLP_EN); -+ udelay(20); -+ iwl_clear_bits_prph(trans, HPM_HIPM_GEN_CFG, -+ HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); -+ -+ iwl_trans_pcie_sw_reset(trans); -+ -+ return 0; -+} -+ - static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans) - { - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); -@@ -1802,6 +1825,13 @@ static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans) - - iwl_trans_pcie_sw_reset(trans); - -+ if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_22000 && -+ trans->cfg->integrated) { -+ err = iwl_pcie_gen2_force_power_gating(trans); -+ if (err) -+ return err; -+ } -+ - err = iwl_pcie_apm_init(trans); - if (err) - return err; --- -cgit v1.2.1-1-g437b - |