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path: root/drivers/hid/intel-ish-hid/ipc/pci-ish.c
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Diffstat (limited to 'drivers/hid/intel-ish-hid/ipc/pci-ish.c')
-rw-r--r--drivers/hid/intel-ish-hid/ipc/pci-ish.c55
1 files changed, 54 insertions, 1 deletions
diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
index c6d48a8648b7..06081cf9b85a 100644
--- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
+++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
@@ -5,6 +5,7 @@
* Copyright (c) 2014-2016, Intel Corporation.
*/
+#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
@@ -37,6 +38,7 @@ static const struct pci_device_id ish_pci_tbl[] = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, CMP_H_DEVICE_ID)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, EHL_Ax_DEVICE_ID)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, TGL_LP_DEVICE_ID)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, TGL_H_DEVICE_ID)},
{0, }
};
MODULE_DEVICE_TABLE(pci, ish_pci_tbl);
@@ -111,6 +113,42 @@ static inline bool ish_should_leave_d0i3(struct pci_dev *pdev)
return !pm_resume_via_firmware() || pdev->device == CHV_DEVICE_ID;
}
+static int enable_gpe(struct device *dev)
+{
+#ifdef CONFIG_ACPI
+ acpi_status acpi_sts;
+ struct acpi_device *adev;
+ struct acpi_device_wakeup *wakeup;
+
+ adev = ACPI_COMPANION(dev);
+ if (!adev) {
+ dev_err(dev, "get acpi handle failed\n");
+ return -ENODEV;
+ }
+ wakeup = &adev->wakeup;
+
+ acpi_sts = acpi_enable_gpe(wakeup->gpe_device, wakeup->gpe_number);
+ if (ACPI_FAILURE(acpi_sts)) {
+ dev_err(dev, "enable ose_gpe failed\n");
+ return -EIO;
+ }
+
+ return 0;
+#else
+ return -ENODEV;
+#endif
+}
+
+static void enable_pme_wake(struct pci_dev *pdev)
+{
+ if ((pci_pme_capable(pdev, PCI_D0) ||
+ pci_pme_capable(pdev, PCI_D3hot) ||
+ pci_pme_capable(pdev, PCI_D3cold)) && !enable_gpe(&pdev->dev)) {
+ pci_pme_active(pdev, true);
+ dev_dbg(&pdev->dev, "ish ipc driver pme wake enabled\n");
+ }
+}
+
/**
* ish_probe() - PCI driver probe callback
* @pdev: pci device
@@ -179,6 +217,10 @@ static int ish_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
init_waitqueue_head(&ishtp->suspend_wait);
init_waitqueue_head(&ishtp->resume_wait);
+ /* Enable PME for EHL */
+ if (pdev->device == EHL_Ax_DEVICE_ID)
+ enable_pme_wake(pdev);
+
ret = ish_init(ishtp);
if (ret)
return ret;
@@ -218,11 +260,15 @@ static void __maybe_unused ish_resume_handler(struct work_struct *work)
{
struct pci_dev *pdev = to_pci_dev(ish_resume_device);
struct ishtp_device *dev = pci_get_drvdata(pdev);
+ uint32_t fwsts = dev->ops->get_fw_status(dev);
int ret;
- if (ish_should_leave_d0i3(pdev) && !dev->suspend_flag) {
+ if (ish_should_leave_d0i3(pdev) && !dev->suspend_flag
+ && IPC_IS_ISH_ILUP(fwsts)) {
disable_irq_wake(pdev->irq);
+ ish_set_host_ready(dev);
+
ishtp_send_resume(dev);
/* Waiting to get resume response */
@@ -317,6 +363,13 @@ static int __maybe_unused ish_resume(struct device *device)
struct pci_dev *pdev = to_pci_dev(device);
struct ishtp_device *dev = pci_get_drvdata(pdev);
+ /* add this to finish power flow for EHL */
+ if (dev->pdev->device == EHL_Ax_DEVICE_ID) {
+ pci_set_power_state(pdev, PCI_D0);
+ enable_pme_wake(pdev);
+ dev_dbg(dev->devc, "set power state to D0 for ehl\n");
+ }
+
ish_resume_device = device;
dev->resume_flag = 1;