mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
7c3b2c933a
All drivers that use ssb_pcihost_probe(), i.e., b43_pci_bridge_driver and b44_pci_driver, set the pci_driver.name, and __pci_register_driver() sets the struct driver.name member to the same value. Replace dev->driver_name() by dev_driver_string() for the corresponding struct device. This is a step toward removing pci_dev->driver. Link: https://lore.kernel.org/r/20211004125935.2300113-7-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Michael Büsch <m@bues.ch>
131 lines
2.8 KiB
C
131 lines
2.8 KiB
C
/*
|
|
* Sonics Silicon Backplane
|
|
* PCI Hostdevice wrapper
|
|
*
|
|
* Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
|
|
* Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
|
|
* Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
|
|
* Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
|
|
* Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
|
|
*
|
|
* Licensed under the GNU/GPL. See COPYING for details.
|
|
*/
|
|
|
|
#include <linux/pm.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/export.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/ssb/ssb.h>
|
|
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int ssb_pcihost_suspend(struct device *d)
|
|
{
|
|
struct pci_dev *dev = to_pci_dev(d);
|
|
struct ssb_bus *ssb = pci_get_drvdata(dev);
|
|
int err;
|
|
|
|
err = ssb_bus_suspend(ssb);
|
|
if (err)
|
|
return err;
|
|
pci_save_state(dev);
|
|
pci_disable_device(dev);
|
|
|
|
/* if there is a wakeup enabled child device on ssb bus,
|
|
enable pci wakeup posibility. */
|
|
device_set_wakeup_enable(d, d->power.wakeup_path);
|
|
|
|
pci_prepare_to_sleep(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ssb_pcihost_resume(struct device *d)
|
|
{
|
|
struct pci_dev *dev = to_pci_dev(d);
|
|
struct ssb_bus *ssb = pci_get_drvdata(dev);
|
|
int err;
|
|
|
|
pci_back_from_sleep(dev);
|
|
err = pci_enable_device(dev);
|
|
if (err)
|
|
return err;
|
|
pci_restore_state(dev);
|
|
err = ssb_bus_resume(ssb);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops ssb_pcihost_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(ssb_pcihost_suspend, ssb_pcihost_resume)
|
|
};
|
|
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static int ssb_pcihost_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct ssb_bus *ssb;
|
|
int err = -ENOMEM;
|
|
u32 val;
|
|
|
|
ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
|
|
if (!ssb)
|
|
goto out;
|
|
err = pci_enable_device(dev);
|
|
if (err)
|
|
goto err_kfree_ssb;
|
|
err = pci_request_regions(dev, dev_driver_string(&dev->dev));
|
|
if (err)
|
|
goto err_pci_disable;
|
|
pci_set_master(dev);
|
|
|
|
/* Disable the RETRY_TIMEOUT register (0x41) to keep
|
|
* PCI Tx retries from interfering with C3 CPU state */
|
|
pci_read_config_dword(dev, 0x40, &val);
|
|
if ((val & 0x0000ff00) != 0)
|
|
pci_write_config_dword(dev, 0x40, val & 0xffff00ff);
|
|
|
|
err = ssb_bus_pcibus_register(ssb, dev);
|
|
if (err)
|
|
goto err_pci_release_regions;
|
|
|
|
pci_set_drvdata(dev, ssb);
|
|
|
|
out:
|
|
return err;
|
|
|
|
err_pci_release_regions:
|
|
pci_release_regions(dev);
|
|
err_pci_disable:
|
|
pci_disable_device(dev);
|
|
err_kfree_ssb:
|
|
kfree(ssb);
|
|
return err;
|
|
}
|
|
|
|
static void ssb_pcihost_remove(struct pci_dev *dev)
|
|
{
|
|
struct ssb_bus *ssb = pci_get_drvdata(dev);
|
|
|
|
ssb_bus_unregister(ssb);
|
|
pci_release_regions(dev);
|
|
pci_disable_device(dev);
|
|
kfree(ssb);
|
|
pci_set_drvdata(dev, NULL);
|
|
}
|
|
|
|
int ssb_pcihost_register(struct pci_driver *driver)
|
|
{
|
|
driver->probe = ssb_pcihost_probe;
|
|
driver->remove = ssb_pcihost_remove;
|
|
#ifdef CONFIG_PM_SLEEP
|
|
driver->driver.pm = &ssb_pcihost_pm_ops;
|
|
#endif
|
|
|
|
return pci_register_driver(driver);
|
|
}
|
|
EXPORT_SYMBOL(ssb_pcihost_register);
|