*
* Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * Copyright(c) 2016 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
+#include <linux/pm_runtime.h>
#include <linux/pci.h>
#include <linux/pci-aspm.h>
#include <linux/acpi.h>
/* 9000 Series */
{IWL_PCI_DEVICE(0x9DF0, 0x2A10, iwl5165_2ac_cfg)},
{IWL_PCI_DEVICE(0x9DF0, 0x2010, iwl5165_2ac_cfg)},
- {IWL_PCI_DEVICE(0x9DF0, 0x0A10, iwl9260_2ac_cfg)},
- {IWL_PCI_DEVICE(0x9DF0, 0x0010, iwl9260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x2526, 0x0A10, iwl9560_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x2526, 0x0010, iwl9560_2ac_cfg)},
{IWL_PCI_DEVICE(0x9DF0, 0x0000, iwl5165_2ac_cfg)},
{IWL_PCI_DEVICE(0x9DF0, 0x0310, iwl5165_2ac_cfg)},
{IWL_PCI_DEVICE(0x9DF0, 0x0510, iwl5165_2ac_cfg)},
{IWL_PCI_DEVICE(0x9DF0, 0x0710, iwl5165_2ac_cfg)},
- {IWL_PCI_DEVICE(0x9DF0, 0x0210, iwl9260_2ac_cfg)},
- {IWL_PCI_DEVICE(0x9DF0, 0x0410, iwl9260_2ac_cfg)},
- {IWL_PCI_DEVICE(0x9DF0, 0x0610, iwl9260_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x2526, 0x0210, iwl9560_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x2526, 0x0410, iwl9560_2ac_cfg)},
+ {IWL_PCI_DEVICE(0x2526, 0x0610, iwl9560_2ac_cfg)},
#endif /* CONFIG_IWLMVM */
{0}
if (ret)
goto out_free_drv;
+ /* if RTPM is in use, enable it in our device */
+ if (iwl_trans->runtime_pm_mode != IWL_PLAT_PM_MODE_DISABLED) {
+ /* We explicitly set the device to active here to
+ * clear contingent errors.
+ */
+ pm_runtime_set_active(&pdev->dev);
+
+ pm_runtime_set_autosuspend_delay(&pdev->dev,
+ iwlwifi_mod_params.d0i3_entry_delay);
+ pm_runtime_use_autosuspend(&pdev->dev);
+
+ /* We are not supposed to call pm_runtime_allow() by
+ * ourselves, but let userspace enable runtime PM via
+ * sysfs. However, since we don't enable this from
+ * userspace yet, we need to allow/forbid() ourselves.
+ */
+ pm_runtime_allow(&pdev->dev);
+ }
+
+ /* The PCI device starts with a reference taken and we are
+ * supposed to release it here. But to simplify the
+ * interaction with the opmode, we don't do it now, but let
+ * the opmode release it when it's ready.
+ */
+
return 0;
out_free_drv:
struct iwl_trans *trans = pci_get_drvdata(pdev);
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+ /* if RTPM was in use, restore it to the state before probe */
+ if (trans->runtime_pm_mode != IWL_PLAT_PM_MODE_DISABLED) {
+ /* We should not call forbid here, but we do for now.
+ * Check the comment to pm_runtime_allow() in
+ * iwl_pci_probe().
+ */
+ pm_runtime_forbid(trans->dev);
+ }
+
iwl_drv_stop(trans_pcie->drv);
+
iwl_trans_pcie_free(trans);
}
return 0;
}
-static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
+int iwl_pci_fw_enter_d0i3(struct iwl_trans *trans)
+{
+ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+ int ret;
+
+ if (test_bit(STATUS_FW_ERROR, &trans->status))
+ return 0;
+
+ set_bit(STATUS_TRANS_GOING_IDLE, &trans->status);
+
+ /* config the fw */
+ ret = iwl_op_mode_enter_d0i3(trans->op_mode);
+ if (ret == 1) {
+ IWL_DEBUG_RPM(trans, "aborting d0i3 entrance\n");
+ clear_bit(STATUS_TRANS_GOING_IDLE, &trans->status);
+ return -EBUSY;
+ }
+ if (ret)
+ goto err;
+
+ ret = wait_event_timeout(trans_pcie->d0i3_waitq,
+ test_bit(STATUS_TRANS_IDLE, &trans->status),
+ msecs_to_jiffies(IWL_TRANS_IDLE_TIMEOUT));
+ if (!ret) {
+ IWL_ERR(trans, "Timeout entering D0i3\n");
+ ret = -ETIMEDOUT;
+ goto err;
+ }
+
+ clear_bit(STATUS_TRANS_GOING_IDLE, &trans->status);
+
+ return 0;
+err:
+ clear_bit(STATUS_TRANS_GOING_IDLE, &trans->status);
+ iwl_trans_fw_error(trans);
+ return ret;
+}
+
+int iwl_pci_fw_exit_d0i3(struct iwl_trans *trans)
+{
+ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+ int ret;
+
+ /* sometimes a D0i3 entry is not followed through */
+ if (!test_bit(STATUS_TRANS_IDLE, &trans->status))
+ return 0;
+
+ /* config the fw */
+ ret = iwl_op_mode_exit_d0i3(trans->op_mode);
+ if (ret)
+ goto err;
+
+ /* we clear STATUS_TRANS_IDLE only when D0I3_END command is completed */
+
+ ret = wait_event_timeout(trans_pcie->d0i3_waitq,
+ !test_bit(STATUS_TRANS_IDLE, &trans->status),
+ msecs_to_jiffies(IWL_TRANS_IDLE_TIMEOUT));
+ if (!ret) {
+ IWL_ERR(trans, "Timeout exiting D0i3\n");
+ ret = -ETIMEDOUT;
+ goto err;
+ }
+
+ return 0;
+err:
+ clear_bit(STATUS_TRANS_IDLE, &trans->status);
+ iwl_trans_fw_error(trans);
+ return ret;
+}
+
+#ifdef CONFIG_IWLWIFI_PCIE_RTPM
+static int iwl_pci_runtime_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct iwl_trans *trans = pci_get_drvdata(pdev);
+ int ret;
+
+ IWL_DEBUG_RPM(trans, "entering runtime suspend\n");
+
+ if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
+ ret = iwl_pci_fw_enter_d0i3(trans);
+ if (ret < 0)
+ return ret;
+ }
+
+ trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
+
+ iwl_trans_d3_suspend(trans, false, false);
+
+ return 0;
+}
+
+static int iwl_pci_runtime_resume(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct iwl_trans *trans = pci_get_drvdata(pdev);
+ enum iwl_d3_status d3_status;
+
+ IWL_DEBUG_RPM(trans, "exiting runtime suspend (resume)\n");
+
+ iwl_trans_d3_resume(trans, &d3_status, false, false);
+
+ if (test_bit(STATUS_DEVICE_ENABLED, &trans->status))
+ return iwl_pci_fw_exit_d0i3(trans);
+
+ return 0;
+}
+
+static int iwl_pci_system_prepare(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct iwl_trans *trans = pci_get_drvdata(pdev);
+
+ IWL_DEBUG_RPM(trans, "preparing for system suspend\n");
+
+ /* This is called before entering system suspend and before
+ * the runtime resume is called. Set the suspending flag to
+ * prevent the wakelock from being taken.
+ */
+ trans->suspending = true;
+
+ /* Wake the device up from runtime suspend before going to
+ * platform suspend. This is needed because we don't know
+ * whether wowlan any is set and, if it's not, mac80211 will
+ * disconnect (in which case, we can't be in D0i3).
+ */
+ pm_runtime_resume(device);
+
+ return 0;
+}
+
+static void iwl_pci_system_complete(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct iwl_trans *trans = pci_get_drvdata(pdev);
+
+ IWL_DEBUG_RPM(trans, "completing system suspend\n");
+
+ /* This is called as a counterpart to the prepare op. It is
+ * called either when suspending fails or when suspend
+ * completed successfully. Now there's no risk of grabbing
+ * the wakelock anymore, so we can release the suspending
+ * flag.
+ */
+ trans->suspending = false;
+}
+#endif /* CONFIG_IWLWIFI_PCIE_RTPM */
+
+static const struct dev_pm_ops iwl_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(iwl_pci_suspend,
+ iwl_pci_resume)
+#ifdef CONFIG_IWLWIFI_PCIE_RTPM
+ SET_RUNTIME_PM_OPS(iwl_pci_runtime_suspend,
+ iwl_pci_runtime_resume,
+ NULL)
+ .prepare = iwl_pci_system_prepare,
+ .complete = iwl_pci_system_complete,
+#endif /* CONFIG_IWLWIFI_PCIE_RTPM */
+};
#define IWL_PM_OPS (&iwl_dev_pm_ops)
-#else
+#else /* CONFIG_PM_SLEEP */
#define IWL_PM_OPS NULL
-#endif
+#endif /* CONFIG_PM_SLEEP */
static struct pci_driver iwl_pci_driver = {
.name = DRV_NAME,
projects / cascardo / linux.git / blobdiff