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path: root/drivers/misc/mei/pci-txe.c
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Diffstat (limited to 'drivers/misc/mei/pci-txe.c')
-rw-r--r--drivers/misc/mei/pci-txe.c99
1 files changed, 27 insertions, 72 deletions
diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c
index e1b909123fb0..98d1bc2c7f4b 100644
--- a/drivers/misc/mei/pci-txe.c
+++ b/drivers/misc/mei/pci-txe.c
@@ -1,30 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- *
+ * Copyright (c) 2013-2020, Intel Corporation. All rights reserved.
* Intel Management Engine Interface (Intel MEI) Linux driver
- * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
-#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/sched.h>
-#include <linux/uuid.h>
-#include <linux/jiffies.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/pm_domain.h>
@@ -82,9 +69,9 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto end;
}
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(36));
if (err) {
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev, "No suitable DMA available.\n");
goto end;
@@ -100,6 +87,10 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
hw = to_txe_hw(dev);
hw->mem_addr = pcim_iomap_table(pdev);
+ err = mei_register(dev, &pdev->dev);
+ if (err)
+ goto end;
+
pci_enable_msi(pdev);
/* clear spurious interrupts */
@@ -119,29 +110,25 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (err) {
dev_err(&pdev->dev, "mei: request_threaded_irq failure. irq = %d\n",
pdev->irq);
- goto end;
+ goto deregister;
}
if (mei_start(dev)) {
dev_err(&pdev->dev, "init hw failure.\n");
err = -ENODEV;
- goto release_irq;
+ goto deregister;
}
pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_TXI_RPM_TIMEOUT);
pm_runtime_use_autosuspend(&pdev->dev);
- err = mei_register(dev, &pdev->dev);
- if (err)
- goto stop;
-
pci_set_drvdata(pdev, dev);
/*
* MEI requires to resume from runtime suspend mode
* in order to perform link reset flow upon system suspend.
*/
- dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP);
+ dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);
/*
* TXE maps runtime suspend/resume to own power gating states,
@@ -157,19 +144,18 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return 0;
-stop:
- mei_stop(dev);
-release_irq:
+deregister:
mei_cancel_work(dev);
mei_disable_interrupts(dev);
free_irq(pdev->irq, dev);
+ mei_deregister(dev);
end:
dev_err(&pdev->dev, "initialization failed.\n");
return err;
}
/**
- * mei_txe_remove - Device Shutdown Routine
+ * mei_txe_shutdown- Device Shutdown Routine
*
* @pdev: PCI device structure
*
@@ -179,11 +165,7 @@ end:
*/
static void mei_txe_shutdown(struct pci_dev *pdev)
{
- struct mei_device *dev;
-
- dev = pci_get_drvdata(pdev);
- if (!dev)
- return;
+ struct mei_device *dev = pci_get_drvdata(pdev);
dev_dbg(&pdev->dev, "shutdown\n");
mei_stop(dev);
@@ -204,13 +186,7 @@ static void mei_txe_shutdown(struct pci_dev *pdev)
*/
static void mei_txe_remove(struct pci_dev *pdev)
{
- struct mei_device *dev;
-
- dev = pci_get_drvdata(pdev);
- if (!dev) {
- dev_err(&pdev->dev, "mei: dev == NULL\n");
- return;
- }
+ struct mei_device *dev = pci_get_drvdata(pdev);
pm_runtime_get_noresume(&pdev->dev);
@@ -231,9 +207,6 @@ static int mei_txe_pci_suspend(struct device *device)
struct pci_dev *pdev = to_pci_dev(device);
struct mei_device *dev = pci_get_drvdata(pdev);
- if (!dev)
- return -ENODEV;
-
dev_dbg(&pdev->dev, "suspend\n");
mei_stop(dev);
@@ -249,13 +222,9 @@ static int mei_txe_pci_suspend(struct device *device)
static int mei_txe_pci_resume(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
- struct mei_device *dev;
+ struct mei_device *dev = pci_get_drvdata(pdev);
int err;
- dev = pci_get_drvdata(pdev);
- if (!dev)
- return -ENODEV;
-
pci_enable_msi(pdev);
mei_clear_interrupts(dev);
@@ -286,14 +255,10 @@ static int mei_txe_pci_resume(struct device *device)
#ifdef CONFIG_PM
static int mei_txe_pm_runtime_idle(struct device *device)
{
- struct pci_dev *pdev = to_pci_dev(device);
- struct mei_device *dev;
+ struct mei_device *dev = dev_get_drvdata(device);
- dev_dbg(&pdev->dev, "rpm: txe: runtime_idle\n");
+ dev_dbg(device, "rpm: txe: runtime_idle\n");
- dev = pci_get_drvdata(pdev);
- if (!dev)
- return -ENODEV;
if (mei_write_is_idle(dev))
pm_runtime_autosuspend(device);
@@ -301,15 +266,10 @@ static int mei_txe_pm_runtime_idle(struct device *device)
}
static int mei_txe_pm_runtime_suspend(struct device *device)
{
- struct pci_dev *pdev = to_pci_dev(device);
- struct mei_device *dev;
+ struct mei_device *dev = dev_get_drvdata(device);
int ret;
- dev_dbg(&pdev->dev, "rpm: txe: runtime suspend\n");
-
- dev = pci_get_drvdata(pdev);
- if (!dev)
- return -ENODEV;
+ dev_dbg(device, "rpm: txe: runtime suspend\n");
mutex_lock(&dev->device_lock);
@@ -320,7 +280,7 @@ static int mei_txe_pm_runtime_suspend(struct device *device)
/* keep irq on we are staying in D0 */
- dev_dbg(&pdev->dev, "rpm: txe: runtime suspend ret=%d\n", ret);
+ dev_dbg(device, "rpm: txe: runtime suspend ret=%d\n", ret);
mutex_unlock(&dev->device_lock);
@@ -332,15 +292,10 @@ static int mei_txe_pm_runtime_suspend(struct device *device)
static int mei_txe_pm_runtime_resume(struct device *device)
{
- struct pci_dev *pdev = to_pci_dev(device);
- struct mei_device *dev;
+ struct mei_device *dev = dev_get_drvdata(device);
int ret;
- dev_dbg(&pdev->dev, "rpm: txe: runtime resume\n");
-
- dev = pci_get_drvdata(pdev);
- if (!dev)
- return -ENODEV;
+ dev_dbg(device, "rpm: txe: runtime resume\n");
mutex_lock(&dev->device_lock);
@@ -350,7 +305,7 @@ static int mei_txe_pm_runtime_resume(struct device *device)
mutex_unlock(&dev->device_lock);
- dev_dbg(&pdev->dev, "rpm: txe: runtime resume ret = %d\n", ret);
+ dev_dbg(device, "rpm: txe: runtime resume ret = %d\n", ret);
if (ret)
schedule_work(&dev->reset_work);
@@ -365,7 +320,7 @@ static int mei_txe_pm_runtime_resume(struct device *device)
*/
static inline void mei_txe_set_pm_domain(struct mei_device *dev)
{
- struct pci_dev *pdev = to_pci_dev(dev->dev);
+ struct pci_dev *pdev = to_pci_dev(dev->parent);
if (pdev->dev.bus && pdev->dev.bus->pm) {
dev->pg_domain.ops = *pdev->dev.bus->pm;
@@ -386,7 +341,7 @@ static inline void mei_txe_set_pm_domain(struct mei_device *dev)
static inline void mei_txe_unset_pm_domain(struct mei_device *dev)
{
/* stop using pm callbacks if any */
- dev_pm_domain_set(dev->dev, NULL);
+ dev_pm_domain_set(dev->parent, NULL);
}
static const struct dev_pm_ops mei_txe_pm_ops = {
generated by cgit (git 2.34.1) at 2025-12-24 23:01:37 +0000