Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 1 | /* |
Sujith | cee075a | 2009-03-13 09:07:23 +0530 | [diff] [blame] | 2 | * Copyright (c) 2008-2009 Atheros Communications Inc. |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/nl80211.h> |
| 18 | #include <linux/pci.h> |
Sujith | 394cf0a | 2009-02-09 13:26:54 +0530 | [diff] [blame] | 19 | #include "ath9k.h" |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 20 | |
| 21 | static struct pci_device_id ath_pci_id_table[] __devinitdata = { |
| 22 | { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */ |
| 23 | { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */ |
| 24 | { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */ |
| 25 | { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */ |
| 26 | { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */ |
| 27 | { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */ |
Vivek Natarajan | ac88b6e | 2009-07-23 10:59:57 +0530 | [diff] [blame] | 28 | { PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI */ |
| 29 | { PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */ |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 30 | { 0 } |
| 31 | }; |
| 32 | |
| 33 | /* return bus cachesize in 4B word units */ |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 34 | static void ath_pci_read_cachesize(struct ath_common *common, int *csz) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 35 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 36 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 37 | u8 u8tmp; |
| 38 | |
Vasanthakumar Thiagarajan | f020979 | 2009-09-07 17:46:50 +0530 | [diff] [blame] | 39 | pci_read_config_byte(to_pci_dev(sc->dev), PCI_CACHE_LINE_SIZE, &u8tmp); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 40 | *csz = (int)u8tmp; |
| 41 | |
| 42 | /* |
| 43 | * This check was put in to avoid "unplesant" consequences if |
| 44 | * the bootrom has not fully initialized all PCI devices. |
| 45 | * Sometimes the cache line size register is not set |
| 46 | */ |
| 47 | |
| 48 | if (*csz == 0) |
| 49 | *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ |
| 50 | } |
| 51 | |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 52 | static void ath_pci_cleanup(struct ath_common *common) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 53 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 54 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 55 | struct pci_dev *pdev = to_pci_dev(sc->dev); |
| 56 | |
| 57 | pci_iounmap(pdev, sc->mem); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 58 | pci_disable_device(pdev); |
Sujith | db0f41f | 2009-02-20 15:13:26 +0530 | [diff] [blame] | 59 | pci_release_region(pdev, 0); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 60 | } |
| 61 | |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 62 | static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 63 | { |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 64 | struct ath_hw *ah = (struct ath_hw *) common->ah; |
| 65 | |
Luis R. Rodriguez | 475a6e4 | 2009-09-23 23:06:59 -0400 | [diff] [blame] | 66 | common->ops->read(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 67 | |
| 68 | if (!ath9k_hw_wait(ah, |
| 69 | AR_EEPROM_STATUS_DATA, |
| 70 | AR_EEPROM_STATUS_DATA_BUSY | |
Sujith | 0caa7b1 | 2009-02-16 13:23:20 +0530 | [diff] [blame] | 71 | AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, |
| 72 | AH_WAIT_TIMEOUT)) { |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 73 | return false; |
| 74 | } |
| 75 | |
Luis R. Rodriguez | 475a6e4 | 2009-09-23 23:06:59 -0400 | [diff] [blame] | 76 | *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 77 | AR_EEPROM_STATUS_DATA_VAL); |
| 78 | |
| 79 | return true; |
| 80 | } |
| 81 | |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 82 | /* |
| 83 | * Bluetooth coexistance requires disabling ASPM. |
| 84 | */ |
Luis R. Rodriguez | 5bb1279 | 2009-09-14 00:55:09 -0700 | [diff] [blame] | 85 | static void ath_pci_bt_coex_prep(struct ath_common *common) |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 86 | { |
Luis R. Rodriguez | bc974f4 | 2009-09-28 02:54:40 -0400 | [diff] [blame] | 87 | struct ath_softc *sc = (struct ath_softc *) common->priv; |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 88 | struct pci_dev *pdev = to_pci_dev(sc->dev); |
| 89 | u8 aspm; |
| 90 | |
| 91 | if (!pdev->is_pcie) |
| 92 | return; |
| 93 | |
| 94 | pci_read_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, &aspm); |
| 95 | aspm &= ~(ATH_PCIE_CAP_LINK_L0S | ATH_PCIE_CAP_LINK_L1); |
| 96 | pci_write_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, aspm); |
| 97 | } |
| 98 | |
Tobias Klauser | 83bd11a | 2009-12-23 14:04:43 +0100 | [diff] [blame] | 99 | static const struct ath_bus_ops ath_pci_bus_ops = { |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 100 | .read_cachesize = ath_pci_read_cachesize, |
| 101 | .cleanup = ath_pci_cleanup, |
Gabor Juhos | 9dbeb91 | 2009-01-14 20:17:08 +0100 | [diff] [blame] | 102 | .eeprom_read = ath_pci_eeprom_read, |
Luis R. Rodriguez | 867633f | 2009-09-10 12:12:23 -0700 | [diff] [blame] | 103 | .bt_coex_prep = ath_pci_bt_coex_prep, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 104 | }; |
| 105 | |
| 106 | static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 107 | { |
| 108 | void __iomem *mem; |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 109 | struct ath_wiphy *aphy; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 110 | struct ath_softc *sc; |
| 111 | struct ieee80211_hw *hw; |
| 112 | u8 csz; |
Vasanthakumar Thiagarajan | aeac355 | 2009-09-09 15:25:49 +0530 | [diff] [blame] | 113 | u16 subsysid; |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 114 | u32 val; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 115 | int ret = 0; |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 116 | char hw_name[64]; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 117 | |
| 118 | if (pci_enable_device(pdev)) |
| 119 | return -EIO; |
| 120 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 121 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 122 | if (ret) { |
| 123 | printk(KERN_ERR "ath9k: 32-bit DMA not available\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 124 | goto err_dma; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 125 | } |
| 126 | |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 127 | ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 128 | if (ret) { |
| 129 | printk(KERN_ERR "ath9k: 32-bit DMA consistent " |
| 130 | "DMA enable failed\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 131 | goto err_dma; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | /* |
| 135 | * Cache line size is used to size and align various |
| 136 | * structures used to communicate with the hardware. |
| 137 | */ |
| 138 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); |
| 139 | if (csz == 0) { |
| 140 | /* |
| 141 | * Linux 2.4.18 (at least) writes the cache line size |
| 142 | * register as a 16-bit wide register which is wrong. |
| 143 | * We must have this setup properly for rx buffer |
| 144 | * DMA to work so force a reasonable value here if it |
| 145 | * comes up zero. |
| 146 | */ |
| 147 | csz = L1_CACHE_BYTES / sizeof(u32); |
| 148 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); |
| 149 | } |
| 150 | /* |
| 151 | * The default setting of latency timer yields poor results, |
| 152 | * set it to the value used by other systems. It may be worth |
| 153 | * tweaking this setting more. |
| 154 | */ |
| 155 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); |
| 156 | |
| 157 | pci_set_master(pdev); |
| 158 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 159 | /* |
| 160 | * Disable the RETRY_TIMEOUT register (0x41) to keep |
| 161 | * PCI Tx retries from interfering with C3 CPU state. |
| 162 | */ |
| 163 | pci_read_config_dword(pdev, 0x40, &val); |
| 164 | if ((val & 0x0000ff00) != 0) |
| 165 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
| 166 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 167 | ret = pci_request_region(pdev, 0, "ath9k"); |
| 168 | if (ret) { |
| 169 | dev_err(&pdev->dev, "PCI memory region reserve error\n"); |
| 170 | ret = -ENODEV; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 171 | goto err_region; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 172 | } |
| 173 | |
| 174 | mem = pci_iomap(pdev, 0, 0); |
| 175 | if (!mem) { |
| 176 | printk(KERN_ERR "PCI memory map error\n") ; |
| 177 | ret = -EIO; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 178 | goto err_iomap; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 179 | } |
| 180 | |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 181 | hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) + |
| 182 | sizeof(struct ath_softc), &ath9k_ops); |
Luis R. Rodriguez | db6be53 | 2009-09-02 16:34:57 -0700 | [diff] [blame] | 183 | if (!hw) { |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 184 | dev_err(&pdev->dev, "No memory for ieee80211_hw\n"); |
Luis R. Rodriguez | db6be53 | 2009-09-02 16:34:57 -0700 | [diff] [blame] | 185 | ret = -ENOMEM; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 186 | goto err_alloc_hw; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | SET_IEEE80211_DEV(hw, &pdev->dev); |
| 190 | pci_set_drvdata(pdev, hw); |
| 191 | |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 192 | aphy = hw->priv; |
| 193 | sc = (struct ath_softc *) (aphy + 1); |
| 194 | aphy->sc = sc; |
| 195 | aphy->hw = hw; |
| 196 | sc->pri_wiphy = aphy; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 197 | sc->hw = hw; |
| 198 | sc->dev = &pdev->dev; |
| 199 | sc->mem = mem; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 200 | |
Luis R. Rodriguez | fc548af | 2009-09-02 17:06:21 -0700 | [diff] [blame] | 201 | ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc); |
Luis R. Rodriguez | 580171f | 2009-09-02 17:02:18 -0700 | [diff] [blame] | 202 | if (ret) { |
| 203 | dev_err(&pdev->dev, "request_irq failed\n"); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 204 | goto err_irq; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | sc->irq = pdev->irq; |
| 208 | |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 209 | pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsysid); |
| 210 | ret = ath9k_init_device(id->device, sc, subsysid, &ath_pci_bus_ops); |
| 211 | if (ret) { |
| 212 | dev_err(&pdev->dev, "Failed to initialize device\n"); |
| 213 | goto err_init; |
| 214 | } |
| 215 | |
| 216 | ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name)); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 217 | printk(KERN_INFO |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 218 | "%s: %s mem=0x%lx, irq=%d\n", |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 219 | wiphy_name(hw->wiphy), |
Luis R. Rodriguez | f934c4d | 2009-10-27 12:59:34 -0400 | [diff] [blame] | 220 | hw_name, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 221 | (unsigned long)mem, pdev->irq); |
| 222 | |
| 223 | return 0; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 224 | |
| 225 | err_init: |
| 226 | free_irq(sc->irq, sc); |
| 227 | err_irq: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 228 | ieee80211_free_hw(hw); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 229 | err_alloc_hw: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 230 | pci_iounmap(pdev, mem); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 231 | err_iomap: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 232 | pci_release_region(pdev, 0); |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 233 | err_region: |
| 234 | /* Nothing */ |
| 235 | err_dma: |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 236 | pci_disable_device(pdev); |
| 237 | return ret; |
| 238 | } |
| 239 | |
| 240 | static void ath_pci_remove(struct pci_dev *pdev) |
| 241 | { |
| 242 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 243 | struct ath_wiphy *aphy = hw->priv; |
| 244 | struct ath_softc *sc = aphy->sc; |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 245 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 246 | |
Sujith | 285f2dd | 2010-01-08 10:36:07 +0530 | [diff] [blame^] | 247 | ath9k_deinit_device(sc); |
| 248 | free_irq(sc->irq, sc); |
| 249 | ieee80211_free_hw(sc->hw); |
| 250 | ath_bus_cleanup(common); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | #ifdef CONFIG_PM |
| 254 | |
| 255 | static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 256 | { |
| 257 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 258 | struct ath_wiphy *aphy = hw->priv; |
| 259 | struct ath_softc *sc = aphy->sc; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 260 | |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 261 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 262 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 263 | pci_save_state(pdev); |
| 264 | pci_disable_device(pdev); |
| 265 | pci_set_power_state(pdev, PCI_D3hot); |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static int ath_pci_resume(struct pci_dev *pdev) |
| 271 | { |
| 272 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
Jouni Malinen | bce048d | 2009-03-03 19:23:28 +0200 | [diff] [blame] | 273 | struct ath_wiphy *aphy = hw->priv; |
| 274 | struct ath_softc *sc = aphy->sc; |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 275 | u32 val; |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 276 | int err; |
| 277 | |
Sujith | 523c36f | 2009-08-13 09:34:35 +0530 | [diff] [blame] | 278 | pci_restore_state(pdev); |
| 279 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 280 | err = pci_enable_device(pdev); |
| 281 | if (err) |
| 282 | return err; |
Sujith | 523c36f | 2009-08-13 09:34:35 +0530 | [diff] [blame] | 283 | |
Jouni Malinen | f021484 | 2009-06-16 11:59:23 +0300 | [diff] [blame] | 284 | /* |
| 285 | * Suspend/Resume resets the PCI configuration space, so we have to |
| 286 | * re-disable the RETRY_TIMEOUT register (0x41) to keep |
| 287 | * PCI Tx retries from interfering with C3 CPU state |
| 288 | */ |
| 289 | pci_read_config_dword(pdev, 0x40, &val); |
| 290 | if ((val & 0x0000ff00) != 0) |
| 291 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 292 | |
| 293 | /* Enable LED */ |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 294 | ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 295 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
Vivek Natarajan | 08fc5c1 | 2009-08-14 11:30:52 +0530 | [diff] [blame] | 296 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 297 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | #endif /* CONFIG_PM */ |
| 302 | |
| 303 | MODULE_DEVICE_TABLE(pci, ath_pci_id_table); |
| 304 | |
| 305 | static struct pci_driver ath_pci_driver = { |
| 306 | .name = "ath9k", |
| 307 | .id_table = ath_pci_id_table, |
| 308 | .probe = ath_pci_probe, |
| 309 | .remove = ath_pci_remove, |
| 310 | #ifdef CONFIG_PM |
| 311 | .suspend = ath_pci_suspend, |
| 312 | .resume = ath_pci_resume, |
| 313 | #endif /* CONFIG_PM */ |
| 314 | }; |
| 315 | |
Sujith | db0f41f | 2009-02-20 15:13:26 +0530 | [diff] [blame] | 316 | int ath_pci_init(void) |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 317 | { |
| 318 | return pci_register_driver(&ath_pci_driver); |
| 319 | } |
| 320 | |
| 321 | void ath_pci_exit(void) |
| 322 | { |
| 323 | pci_unregister_driver(&ath_pci_driver); |
| 324 | } |