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Message-Id: <20200402155057.30667-1-vaibhavgupta40@gmail.com>
Date: Thu, 2 Apr 2020 21:20:58 +0530
From: Vaibhav Gupta <vaibhavgupta40@...il.com>
To: linux-kernel-mentees@...ts.linuxfoundation.org,
skhan@...uxfoundation.org, bjorn@...gaas.com, andy@...nel.org,
linus.walleij@...aro.org, bgolaszewski@...libre.com,
rjw@...ysocki.net
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
Vaibhav Gupta <vaibhavgupta40@...il.com>
Subject: [Linux-kernel-mentees] [PATCH v1] gpio: ml: ioh: Convert to dev_pm_ops
Convert the legacy callback .suspend() and .resume()
to the generic ones.
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
---
drivers/gpio/gpio-ml-ioh.c | 47 +++++++++-----------------------------
1 file changed, 11 insertions(+), 36 deletions(-)
diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 92b6e958cfed..bb71dccac315 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -155,11 +155,10 @@ static int ioh_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
return 0;
}
-#ifdef CONFIG_PM
/*
* Save register configuration and disable interrupts.
*/
-static void ioh_gpio_save_reg_conf(struct ioh_gpio *chip)
+static void __maybe_unused ioh_gpio_save_reg_conf(struct ioh_gpio *chip)
{
int i;
@@ -185,7 +184,7 @@ static void ioh_gpio_save_reg_conf(struct ioh_gpio *chip)
/*
* This function restores the register configuration of the GPIO device.
*/
-static void ioh_gpio_restore_reg_conf(struct ioh_gpio *chip)
+static void __maybe_unused ioh_gpio_restore_reg_conf(struct ioh_gpio *chip)
{
int i;
@@ -207,7 +206,6 @@ static void ioh_gpio_restore_reg_conf(struct ioh_gpio *chip)
&chip->reg->ioh_sel_reg[i]);
}
}
-#endif
static int ioh_gpio_to_irq(struct gpio_chip *gpio, unsigned offset)
{
@@ -522,10 +520,9 @@ static void ioh_gpio_remove(struct pci_dev *pdev)
kfree(chip);
}
-#ifdef CONFIG_PM
-static int ioh_gpio_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused ioh_gpio_suspend(struct device *dev)
{
- s32 ret;
+ struct pci_dev *pdev = to_pci_dev(dev);
struct ioh_gpio *chip = pci_get_drvdata(pdev);
unsigned long flags;
@@ -533,36 +530,15 @@ static int ioh_gpio_suspend(struct pci_dev *pdev, pm_message_t state)
ioh_gpio_save_reg_conf(chip);
spin_unlock_irqrestore(&chip->spinlock, flags);
- ret = pci_save_state(pdev);
- if (ret) {
- dev_err(&pdev->dev, "pci_save_state Failed-%d\n", ret);
- return ret;
- }
- pci_disable_device(pdev);
- pci_set_power_state(pdev, PCI_D0);
- ret = pci_enable_wake(pdev, PCI_D0, 1);
- if (ret)
- dev_err(&pdev->dev, "pci_enable_wake Failed -%d\n", ret);
-
return 0;
}
-static int ioh_gpio_resume(struct pci_dev *pdev)
+static int __maybe_unused ioh_gpio_resume(struct device *dev)
{
- s32 ret;
+ struct pci_dev *pdev = to_pci_dev(dev);
struct ioh_gpio *chip = pci_get_drvdata(pdev);
unsigned long flags;
- ret = pci_enable_wake(pdev, PCI_D0, 0);
-
- pci_set_power_state(pdev, PCI_D0);
- ret = pci_enable_device(pdev);
- if (ret) {
- dev_err(&pdev->dev, "pci_enable_device Failed-%d ", ret);
- return ret;
- }
- pci_restore_state(pdev);
-
spin_lock_irqsave(&chip->spinlock, flags);
iowrite32(0x01, &chip->reg->srst);
iowrite32(0x00, &chip->reg->srst);
@@ -571,10 +547,8 @@ static int ioh_gpio_resume(struct pci_dev *pdev)
return 0;
}
-#else
-#define ioh_gpio_suspend NULL
-#define ioh_gpio_resume NULL
-#endif
+
+static SIMPLE_DEV_PM_OPS(ioh_gpio_pm_ops, ioh_gpio_suspend, ioh_gpio_resume);
static const struct pci_device_id ioh_gpio_pcidev_id[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x802E) },
@@ -587,8 +561,9 @@ static struct pci_driver ioh_gpio_driver = {
.id_table = ioh_gpio_pcidev_id,
.probe = ioh_gpio_probe,
.remove = ioh_gpio_remove,
- .suspend = ioh_gpio_suspend,
- .resume = ioh_gpio_resume
+ .driver = {
+ .pm = &ioh_gpio_pm_ops,
+ },
};
module_pci_driver(ioh_gpio_driver);
--
2.26.0
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