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Commit 6baff7f9 authored by Gabor Juhos's avatar Gabor Juhos Committed by John W. Linville
Browse files

ath9k: move PCI code into separate file



Now that we have converted all bus specific routines to replaceable, we
can move the PCI specific codes into a separate file.

Changes-licensed-under: ISC

Signed-off-by: default avatarGabor Juhos <juhosg@openwrt.org>
Signed-off-by: default avatarImre Kaloz <kaloz@openwrt.org>
Tested-by: default avatarPavel Roskin <proski@gnu.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 39c3c2f2
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+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ ath9k-y += hw.o \
		xmit.o \
		rc.o

ath9k-$(CONFIG_PCI) += pci.o
ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o

obj-$(CONFIG_ATH9K) += ath9k.o
+18 −1
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@
#define CORE_H

#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <net/mac80211.h>
#include <linux/leds.h>
#include <linux/rfkill.h>
@@ -767,4 +767,21 @@ static inline void ath_bus_cleanup(struct ath_softc *sc)
	sc->bus_ops->cleanup(sc);
}

extern struct ieee80211_ops ath9k_ops;

irqreturn_t ath_isr(int irq, void *dev);
void ath_cleanup(struct ath_softc *sc);
int ath_attach(u16 devid, struct ath_softc *sc);
void ath_detach(struct ath_softc *sc);
const char *ath_mac_bb_name(u32 mac_bb_version);
const char *ath_rf_name(u16 rf_version);

#ifdef CONFIG_PCI
int ath_pci_init(void);
void ath_pci_exit(void);
#else
static inline int ath_pci_init(void) { return 0; };
static inline void ath_pci_exit(void) {};
#endif

#endif /* CORE_H */
+22 −278
Original line number Diff line number Diff line
@@ -28,39 +28,6 @@ MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
MODULE_LICENSE("Dual BSD/GPL");

static struct pci_device_id ath_pci_id_table[] __devinitdata = {
	{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
	{ 0 }
};

static void ath_detach(struct ath_softc *sc);
static void ath_cleanup(struct ath_softc *sc);

/* return bus cachesize in 4B word units */

static void ath_pci_read_cachesize(struct ath_softc *sc, int *csz)
{
	u8 u8tmp;

	pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE,
			     (u8 *)&u8tmp);
	*csz = (int)u8tmp;

	/*
	 * This check was put in to avoid "unplesant" consequences if
	 * the bootrom has not fully initialized all PCI devices.
	 * Sometimes the cache line size register is not set
	 */

	if (*csz == 0)
		*csz = DEFAULT_CACHELINE >> 2;   /* Use the default size */
}

static void ath_cache_conf_rate(struct ath_softc *sc,
				struct ieee80211_conf *conf)
{
@@ -500,7 +467,7 @@ static void ath9k_tasklet(unsigned long data)
	ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
}

static irqreturn_t ath_isr(int irq, void *dev)
irqreturn_t ath_isr(int irq, void *dev)
{
	struct ath_softc *sc = dev;
	struct ath_hal *ah = sc->sc_ah;
@@ -1279,7 +1246,7 @@ static int ath_start_rfkill_poll(struct ath_softc *sc)
}
#endif /* CONFIG_RFKILL */

static void ath_cleanup(struct ath_softc *sc)
void ath_cleanup(struct ath_softc *sc)
{
	ath_detach(sc);
	free_irq(sc->irq, sc);
@@ -1287,7 +1254,7 @@ static void ath_cleanup(struct ath_softc *sc)
	ieee80211_free_hw(sc->hw);
}

static void ath_detach(struct ath_softc *sc)
void ath_detach(struct ath_softc *sc)
{
	struct ieee80211_hw *hw = sc->hw;
	int i = 0;
@@ -1541,7 +1508,7 @@ static int ath_init(u16 devid, struct ath_softc *sc)
	return error;
}

static int ath_attach(u16 devid, struct ath_softc *sc)
int ath_attach(u16 devid, struct ath_softc *sc)
{
	struct ieee80211_hw *hw = sc->hw;
	int error = 0;
@@ -2462,7 +2429,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
	return ret;
}

static struct ieee80211_ops ath9k_ops = {
struct ieee80211_ops ath9k_ops = {
	.tx 		    = ath9k_tx,
	.start 		    = ath9k_start,
	.stop 		    = ath9k_stop,
@@ -2506,7 +2473,7 @@ static struct {
/*
 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
 */
static const char *
const char *
ath_mac_bb_name(u32 mac_bb_version)
{
	int i;
@@ -2523,7 +2490,7 @@ ath_mac_bb_name(u32 mac_bb_version)
/*
 * Return the RF name. "????" is returned if the RF is unknown.
 */
static const char *
const char *
ath_rf_name(u16 rf_version)
{
	int i;
@@ -2537,234 +2504,7 @@ ath_rf_name(u16 rf_version)
	return "????";
}

static void ath_pci_cleanup(struct ath_softc *sc)
{
	struct pci_dev *pdev = to_pci_dev(sc->dev);

	pci_iounmap(pdev, sc->mem);
	pci_release_region(pdev, 0);
	pci_disable_device(pdev);
}

static struct ath_bus_ops ath_pci_bus_ops = {
	.read_cachesize = ath_pci_read_cachesize,
	.cleanup = ath_pci_cleanup,
};

static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	void __iomem *mem;
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	u8 csz;
	u32 val;
	int ret = 0;
	struct ath_hal *ah;

	if (pci_enable_device(pdev))
		return -EIO;

	ret =  pci_set_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
		printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
		goto bad;
	}

	ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
		printk(KERN_ERR "ath9k: 32-bit DMA consistent "
			"DMA enable failed\n");
		goto bad;
	}

	/*
	 * Cache line size is used to size and align various
	 * structures used to communicate with the hardware.
	 */
	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
	if (csz == 0) {
		/*
		 * Linux 2.4.18 (at least) writes the cache line size
		 * register as a 16-bit wide register which is wrong.
		 * We must have this setup properly for rx buffer
		 * DMA to work so force a reasonable value here if it
		 * comes up zero.
		 */
		csz = L1_CACHE_BYTES / sizeof(u32);
		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
	}
	/*
	 * The default setting of latency timer yields poor results,
	 * set it to the value used by other systems. It may be worth
	 * tweaking this setting more.
	 */
	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);

	pci_set_master(pdev);

	/*
	 * Disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state.
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	ret = pci_request_region(pdev, 0, "ath9k");
	if (ret) {
		dev_err(&pdev->dev, "PCI memory region reserve error\n");
		ret = -ENODEV;
		goto bad;
	}

	mem = pci_iomap(pdev, 0, 0);
	if (!mem) {
		printk(KERN_ERR "PCI memory map error\n") ;
		ret = -EIO;
		goto bad1;
	}

	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
	if (hw == NULL) {
		printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
		goto bad2;
	}

	SET_IEEE80211_DEV(hw, &pdev->dev);
	pci_set_drvdata(pdev, hw);

	sc = hw->priv;
	sc->hw = hw;
	sc->dev = &pdev->dev;
	sc->mem = mem;
	sc->bus_ops = &ath_pci_bus_ops;

	if (ath_attach(id->device, sc) != 0) {
		ret = -ENODEV;
		goto bad3;
	}

	/* setup interrupt service routine */

	if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
		printk(KERN_ERR "%s: request_irq failed\n",
			wiphy_name(hw->wiphy));
		ret = -EIO;
		goto bad4;
	}

	sc->irq = pdev->irq;

	ah = sc->sc_ah;
	printk(KERN_INFO
	       "%s: Atheros AR%s MAC/BB Rev:%x "
	       "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
	       wiphy_name(hw->wiphy),
	       ath_mac_bb_name(ah->ah_macVersion),
	       ah->ah_macRev,
	       ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
	       ah->ah_phyRev,
	       (unsigned long)mem, pdev->irq);

	return 0;
bad4:
	ath_detach(sc);
bad3:
	ieee80211_free_hw(hw);
bad2:
	pci_iounmap(pdev, mem);
bad1:
	pci_release_region(pdev, 0);
bad:
	pci_disable_device(pdev);
	return ret;
}

static void ath_pci_remove(struct pci_dev *pdev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath_cleanup(sc);
}

#ifdef CONFIG_PM

static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);

#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif

	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

static int ath_pci_resume(struct pci_dev *pdev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;
	u32 val;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;
	pci_restore_state(pdev);
	/*
	 * Suspend/Resume resets the PCI configuration space, so we have to
	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	/* Enable LED */
	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);

#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
	/*
	 * check the h/w rfkill state on resume
	 * and start the rfkill poll timer
	 */
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		queue_delayed_work(sc->hw->workqueue,
				   &sc->rf_kill.rfkill_poll, 0);
#endif

	return 0;
}

#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(pci, ath_pci_id_table);

static struct pci_driver ath_pci_driver = {
	.name       = "ath9k",
	.id_table   = ath_pci_id_table,
	.probe      = ath_pci_probe,
	.remove     = ath_pci_remove,
#ifdef CONFIG_PM
	.suspend    = ath_pci_suspend,
	.resume     = ath_pci_resume,
#endif /* CONFIG_PM */
};

static int __init init_ath_pci(void)
static int __init ath9k_init(void)
{
	int error;

@@ -2776,26 +2516,30 @@ static int __init init_ath_pci(void)
		printk(KERN_ERR
			"Unable to register rate control algorithm: %d\n",
			error);
		ath_rate_control_unregister();
		return error;
		goto err_out;
	}

	if (pci_register_driver(&ath_pci_driver) < 0) {
	error = ath_pci_init();
	if (error < 0) {
		printk(KERN_ERR
			"ath_pci: No devices found, driver not installed.\n");
		ath_rate_control_unregister();
		pci_unregister_driver(&ath_pci_driver);
		return -ENODEV;
		error = -ENODEV;
		goto err_rate_unregister;
	}

	return 0;

 err_rate_unregister:
	ath_rate_control_unregister();
 err_out:
	return error;
}
module_init(init_ath_pci);
module_init(ath9k_init);

static void __exit exit_ath_pci(void)
static void __exit ath9k_exit(void)
{
	ath_pci_exit();
	ath_rate_control_unregister();
	pci_unregister_driver(&ath_pci_driver);
	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
}
module_exit(exit_ath_pci);
module_exit(ath9k_exit);
+287 −0
Original line number Diff line number Diff line
/*
 * Copyright (c) 2008 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/nl80211.h>
#include <linux/pci.h>
#include "core.h"
#include "reg.h"
#include "hw.h"

static struct pci_device_id ath_pci_id_table[] __devinitdata = {
	{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI   */
	{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
	{ PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
	{ 0 }
};

/* return bus cachesize in 4B word units */
static void ath_pci_read_cachesize(struct ath_softc *sc, int *csz)
{
	u8 u8tmp;

	pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE,
			     (u8 *)&u8tmp);
	*csz = (int)u8tmp;

	/*
	 * This check was put in to avoid "unplesant" consequences if
	 * the bootrom has not fully initialized all PCI devices.
	 * Sometimes the cache line size register is not set
	 */

	if (*csz == 0)
		*csz = DEFAULT_CACHELINE >> 2;   /* Use the default size */
}

static void ath_pci_cleanup(struct ath_softc *sc)
{
	struct pci_dev *pdev = to_pci_dev(sc->dev);

	pci_iounmap(pdev, sc->mem);
	pci_release_region(pdev, 0);
	pci_disable_device(pdev);
}

static struct ath_bus_ops ath_pci_bus_ops = {
	.read_cachesize = ath_pci_read_cachesize,
	.cleanup = ath_pci_cleanup,
};

static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	void __iomem *mem;
	struct ath_softc *sc;
	struct ieee80211_hw *hw;
	u8 csz;
	u32 val;
	int ret = 0;
	struct ath_hal *ah;

	if (pci_enable_device(pdev))
		return -EIO;

	ret =  pci_set_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
		printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
		goto bad;
	}

	ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);

	if (ret) {
		printk(KERN_ERR "ath9k: 32-bit DMA consistent "
			"DMA enable failed\n");
		goto bad;
	}

	/*
	 * Cache line size is used to size and align various
	 * structures used to communicate with the hardware.
	 */
	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
	if (csz == 0) {
		/*
		 * Linux 2.4.18 (at least) writes the cache line size
		 * register as a 16-bit wide register which is wrong.
		 * We must have this setup properly for rx buffer
		 * DMA to work so force a reasonable value here if it
		 * comes up zero.
		 */
		csz = L1_CACHE_BYTES / sizeof(u32);
		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
	}
	/*
	 * The default setting of latency timer yields poor results,
	 * set it to the value used by other systems. It may be worth
	 * tweaking this setting more.
	 */
	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);

	pci_set_master(pdev);

	/*
	 * Disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state.
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	ret = pci_request_region(pdev, 0, "ath9k");
	if (ret) {
		dev_err(&pdev->dev, "PCI memory region reserve error\n");
		ret = -ENODEV;
		goto bad;
	}

	mem = pci_iomap(pdev, 0, 0);
	if (!mem) {
		printk(KERN_ERR "PCI memory map error\n") ;
		ret = -EIO;
		goto bad1;
	}

	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
	if (hw == NULL) {
		printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
		goto bad2;
	}

	SET_IEEE80211_DEV(hw, &pdev->dev);
	pci_set_drvdata(pdev, hw);

	sc = hw->priv;
	sc->hw = hw;
	sc->dev = &pdev->dev;
	sc->mem = mem;
	sc->bus_ops = &ath_pci_bus_ops;

	if (ath_attach(id->device, sc) != 0) {
		ret = -ENODEV;
		goto bad3;
	}

	/* setup interrupt service routine */

	if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
		printk(KERN_ERR "%s: request_irq failed\n",
			wiphy_name(hw->wiphy));
		ret = -EIO;
		goto bad4;
	}

	sc->irq = pdev->irq;

	ah = sc->sc_ah;
	printk(KERN_INFO
	       "%s: Atheros AR%s MAC/BB Rev:%x "
	       "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
	       wiphy_name(hw->wiphy),
	       ath_mac_bb_name(ah->ah_macVersion),
	       ah->ah_macRev,
	       ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
	       ah->ah_phyRev,
	       (unsigned long)mem, pdev->irq);

	return 0;
bad4:
	ath_detach(sc);
bad3:
	ieee80211_free_hw(hw);
bad2:
	pci_iounmap(pdev, mem);
bad1:
	pci_release_region(pdev, 0);
bad:
	pci_disable_device(pdev);
	return ret;
}

static void ath_pci_remove(struct pci_dev *pdev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath_cleanup(sc);
}

#ifdef CONFIG_PM

static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;

	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);

#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif

	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

static int ath_pci_resume(struct pci_dev *pdev)
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct ath_softc *sc = hw->priv;
	u32 val;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;
	pci_restore_state(pdev);
	/*
	 * Suspend/Resume resets the PCI configuration space, so we have to
	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state
	 */
	pci_read_config_dword(pdev, 0x40, &val);
	if ((val & 0x0000ff00) != 0)
		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);

	/* Enable LED */
	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);

#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
	/*
	 * check the h/w rfkill state on resume
	 * and start the rfkill poll timer
	 */
	if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		queue_delayed_work(sc->hw->workqueue,
				   &sc->rf_kill.rfkill_poll, 0);
#endif

	return 0;
}

#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(pci, ath_pci_id_table);

static struct pci_driver ath_pci_driver = {
	.name       = "ath9k",
	.id_table   = ath_pci_id_table,
	.probe      = ath_pci_probe,
	.remove     = ath_pci_remove,
#ifdef CONFIG_PM
	.suspend    = ath_pci_suspend,
	.resume     = ath_pci_resume,
#endif /* CONFIG_PM */
};

int __init ath_pci_init(void)
{
	return pci_register_driver(&ath_pci_driver);
}

void ath_pci_exit(void)
{
	pci_unregister_driver(&ath_pci_driver);
}