From patchwork Tue Aug 4 20:43:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emmanuel Grumbach X-Patchwork-Id: 6944251 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5C2B9C05AC for ; Tue, 4 Aug 2015 20:59:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7019A20382 for ; Tue, 4 Aug 2015 20:59:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48F6C204B0 for ; Tue, 4 Aug 2015 20:59:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932307AbbHDU73 (ORCPT ); Tue, 4 Aug 2015 16:59:29 -0400 Received: from mga09.intel.com ([134.134.136.24]:37379 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932069AbbHDU7O (ORCPT ); Tue, 4 Aug 2015 16:59:14 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP; 04 Aug 2015 13:44:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,611,1432623600"; d="scan'208";a="742191918" Received: from jarluk-mobl.ger.corp.intel.com (HELO egrumbacBOX.ger.corp.intel.com) ([10.255.204.201]) by orsmga001.jf.intel.com with ESMTP; 04 Aug 2015 13:44:33 -0700 From: Emmanuel Grumbach To: linux-wireless@vger.kernel.org Cc: Eliad Peller , Emmanuel Grumbach Subject: [PATCH 30/37] iwlwifi: call d3_suspend/resume in d0i3 case as well Date: Tue, 4 Aug 2015 23:43:20 +0300 Message-Id: <1438721007-23283-30-git-send-email-emmanuel.grumbach@intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <0BA3FCBA62E2DC44AF3030971E174FB32E7E11FA@hasmsx107.ger.corp.intel.com> References: <0BA3FCBA62E2DC44AF3030971E174FB32E7E11FA@hasmsx107.ger.corp.intel.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-7.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Eliad Peller Some CSR registers have to be configured also in case of suspend/resume with unified image (which doesn't includes reconfiguration flow). Reuse the existing d3_suspend/d3_resume trans ops, while making sure some configurations are a bit different, according to the wowlan type. After this change, we no longer need the special wowlan_d0i3 configurations done in iwl_pci_resume, as they are already being done in the d3_resume op. Signed-off-by: Eliad Peller Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/d3.c | 6 ++++++ drivers/net/wireless/iwlwifi/pcie/drv.c | 13 +++-------- drivers/net/wireless/iwlwifi/pcie/trans.c | 36 +++++++++++++++++++++---------- 3 files changed, 34 insertions(+), 21 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c index 68d7218..a85be4e 100644 --- a/drivers/net/wireless/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/iwlwifi/mvm/d3.c @@ -1187,6 +1187,9 @@ int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) mutex_lock(&mvm->d0i3_suspend_mutex); __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); mutex_unlock(&mvm->d0i3_suspend_mutex); + + iwl_trans_d3_suspend(mvm->trans, false); + return 0; } @@ -1949,6 +1952,9 @@ static int iwl_mvm_resume_d3(struct iwl_mvm *mvm) static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm) { bool exit_now; + enum iwl_d3_status d3_status; + + iwl_trans_d3_resume(mvm->trans, &d3_status, false); /* * make sure to clear D0I3_DEFER_WAKEUP before diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c index dbd2a03..cdf3a0c 100644 --- a/drivers/net/wireless/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/iwlwifi/pcie/drv.c @@ -631,17 +631,10 @@ static int iwl_pci_resume(struct device *device) return 0; /* - * On suspend, ict is disabled, and the interrupt mask - * gets cleared. Reconfigure them both in case of d0i3 - * image. Otherwise, only enable rfkill interrupt (in - * order to keep track of the rfkill status) + * Enable rfkill interrupt (in order to keep track of + * the rfkill status) */ - if (trans->wowlan_d0i3) { - iwl_pcie_reset_ict(trans); - iwl_enable_interrupts(trans); - } else { - iwl_enable_rfkill_int(trans); - } + iwl_enable_rfkill_int(trans); hw_rfkill = iwl_is_rfkill_set(trans); diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 46e900e..cbc29cc 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1189,6 +1189,12 @@ static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + if (trans->wowlan_d0i3) { + /* Enable persistence mode to avoid reset */ + iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, + CSR_HW_IF_CONFIG_REG_PERSIST_MODE); + } + iwl_disable_interrupts(trans); /* @@ -1207,12 +1213,14 @@ static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test) iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - /* - * reset TX queues -- some of their registers reset during S3 - * so if we don't reset everything here the D3 image would try - * to execute some invalid memory upon resume - */ - iwl_trans_pcie_tx_reset(trans); + if (!trans->wowlan_d0i3) { + /* + * reset TX queues -- some of their registers reset during S3 + * so if we don't reset everything here the D3 image would try + * to execute some invalid memory upon resume + */ + iwl_trans_pcie_tx_reset(trans); + } iwl_pcie_set_pwr(trans, true); } @@ -1254,12 +1262,18 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, iwl_pcie_set_pwr(trans, false); - iwl_trans_pcie_tx_reset(trans); + if (trans->wowlan_d0i3) { + iwl_clear_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + } else { + iwl_trans_pcie_tx_reset(trans); - ret = iwl_pcie_rx_init(trans); - if (ret) { - IWL_ERR(trans, "Failed to resume the device (RX reset)\n"); - return ret; + ret = iwl_pcie_rx_init(trans); + if (ret) { + IWL_ERR(trans, + "Failed to resume the device (RX reset)\n"); + return ret; + } } val = iwl_read32(trans, CSR_RESET);