mirror of https://gitee.com/openkylin/linux.git
iwlwifi : Patch adds rfkill subsystem for 3945
The patch removes the sysfs interface from iwl3945 and uses the rfkill subsystem instead. Original patch by Adel, I fixed the patch to work it properly. Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com> Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Abhijeet Kolekar
John W. Linville
parent
2ff75b7877
commit
ebef200808
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@ -36,6 +36,10 @@
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#include <linux/kernel.h>
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#include <net/ieee80211_radiotap.h>
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/*used for rfkill*/
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#include <linux/rfkill.h>
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#include <linux/input.h>
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/* Hardware specific file defines the PCI IDs table for that hardware module */
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extern struct pci_device_id iwl3945_hw_card_ids[];
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@ -686,6 +690,23 @@ enum {
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#endif
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#ifdef CONFIG_IWLWIFI_RFKILL
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struct iwl3945_priv;
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struct iwl3945_rfkill_mngr {
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struct rfkill *rfkill;
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struct input_dev *input_dev;
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};
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void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv);
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void iwl3945_rfkill_unregister(struct iwl3945_priv *priv);
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int iwl3945_rfkill_init(struct iwl3945_priv *priv);
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#else
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static inline void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv) {}
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static inline void iwl3945_rfkill_unregister(struct iwl3945_priv *priv) {}
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static inline int iwl3945_rfkill_init(struct iwl3945_priv *priv) { return 0; }
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#endif
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#define IWL_MAX_NUM_QUEUES IWL39_MAX_NUM_QUEUES
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struct iwl3945_priv {
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@ -779,6 +800,10 @@ struct iwl3945_priv {
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struct iwl3945_init_alive_resp card_alive_init;
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struct iwl3945_alive_resp card_alive;
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#ifdef CONFIG_IWLWIFI_RFKILL
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struct iwl3945_rfkill_mngr rfkill_mngr;
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#endif
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#ifdef CONFIG_IWL3945_LEDS
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struct iwl3945_led led[IWL_LED_TRG_MAX];
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unsigned long last_blink_time;
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@ -5921,7 +5921,9 @@ static void __iwl3945_down(struct iwl3945_priv *priv)
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test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
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STATUS_GEO_CONFIGURED |
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test_bit(STATUS_IN_SUSPEND, &priv->status) <<
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STATUS_IN_SUSPEND;
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STATUS_IN_SUSPEND |
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test_bit(STATUS_EXIT_PENDING, &priv->status) <<
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STATUS_EXIT_PENDING;
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goto exit;
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}
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@ -5936,7 +5938,9 @@ static void __iwl3945_down(struct iwl3945_priv *priv)
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test_bit(STATUS_IN_SUSPEND, &priv->status) <<
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STATUS_IN_SUSPEND |
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test_bit(STATUS_FW_ERROR, &priv->status) <<
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STATUS_FW_ERROR;
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STATUS_FW_ERROR |
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test_bit(STATUS_EXIT_PENDING, &priv->status) <<
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STATUS_EXIT_PENDING;
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spin_lock_irqsave(&priv->lock, flags);
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iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
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@ -6008,11 +6012,12 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
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else {
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set_bit(STATUS_RF_KILL_HW, &priv->status);
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if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
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iwl3945_rfkill_set_hw_state(priv);
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IWL_WARNING("Radio disabled by HW RF Kill switch\n");
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return -ENODEV;
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}
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}
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iwl3945_rfkill_set_hw_state(priv);
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iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
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rc = iwl3945_hw_nic_init(priv);
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@ -6068,6 +6073,7 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
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set_bit(STATUS_EXIT_PENDING, &priv->status);
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__iwl3945_down(priv);
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clear_bit(STATUS_EXIT_PENDING, &priv->status);
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/* tried to restart and config the device for as long as our
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* patience could withstand */
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@ -6135,6 +6141,8 @@ static void iwl3945_bg_rf_kill(struct work_struct *work)
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"Kill switch must be turned off for "
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"wireless networking to work.\n");
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}
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iwl3945_rfkill_set_hw_state(priv);
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mutex_unlock(&priv->mutex);
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}
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@ -7412,37 +7420,6 @@ static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
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#endif /* CONFIG_IWL3945_DEBUG */
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static ssize_t show_rf_kill(struct device *d,
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struct device_attribute *attr, char *buf)
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{
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/*
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* 0 - RF kill not enabled
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* 1 - SW based RF kill active (sysfs)
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* 2 - HW based RF kill active
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* 3 - Both HW and SW based RF kill active
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*/
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struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
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int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
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(test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
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return sprintf(buf, "%i\n", val);
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}
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static ssize_t store_rf_kill(struct device *d,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
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mutex_lock(&priv->mutex);
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iwl3945_radio_kill_sw(priv, buf[0] == '1');
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mutex_unlock(&priv->mutex);
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return count;
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}
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static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
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static ssize_t show_temperature(struct device *d,
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struct device_attribute *attr, char *buf)
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{
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@ -7928,7 +7905,6 @@ static struct attribute *iwl3945_sysfs_entries[] = {
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#endif
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&dev_attr_power_level.attr,
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&dev_attr_retry_rate.attr,
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&dev_attr_rf_kill.attr,
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&dev_attr_rs_window.attr,
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&dev_attr_statistics.attr,
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&dev_attr_status.attr,
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@ -8169,6 +8145,11 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
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pci_save_state(pdev);
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pci_disable_device(pdev);
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err = iwl3945_rfkill_init(priv);
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if (err)
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IWL_ERROR("Unable to initialize RFKILL system. "
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"Ignoring error: %d\n", err);
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return 0;
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out_free_geos:
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@ -8231,6 +8212,7 @@ static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
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sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
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iwl3945_rfkill_unregister(priv);
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iwl3945_dealloc_ucode_pci(priv);
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if (priv->rxq.bd)
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@ -8299,6 +8281,140 @@ static int iwl3945_pci_resume(struct pci_dev *pdev)
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#endif /* CONFIG_PM */
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/*************** RFKILL FUNCTIONS **********/
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#ifdef CONFIG_IWLWIFI_RFKILL
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/* software rf-kill from user */
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static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
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{
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struct iwl3945_priv *priv = data;
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int err = 0;
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if (!priv->rfkill_mngr.rfkill)
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return 0;
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if (test_bit(STATUS_EXIT_PENDING, &priv->status))
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return 0;
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IWL_DEBUG_RF_KILL("we recieved soft RFKILL set to state %d\n", state);
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mutex_lock(&priv->mutex);
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switch (state) {
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case RFKILL_STATE_ON:
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iwl3945_radio_kill_sw(priv, 0);
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/* if HW rf-kill is set dont allow ON state */
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if (iwl3945_is_rfkill(priv))
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err = -EBUSY;
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break;
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case RFKILL_STATE_OFF:
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iwl3945_radio_kill_sw(priv, 1);
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if (!iwl3945_is_rfkill(priv))
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err = -EBUSY;
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break;
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}
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mutex_unlock(&priv->mutex);
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return err;
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}
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int iwl3945_rfkill_init(struct iwl3945_priv *priv)
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{
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struct device *device = wiphy_dev(priv->hw->wiphy);
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int ret = 0;
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BUG_ON(device == NULL);
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IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
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priv->rfkill_mngr.rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
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if (!priv->rfkill_mngr.rfkill) {
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IWL_ERROR("Unable to allocate rfkill device.\n");
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ret = -ENOMEM;
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goto error;
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}
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priv->rfkill_mngr.rfkill->name = priv->cfg->name;
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priv->rfkill_mngr.rfkill->data = priv;
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priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
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priv->rfkill_mngr.rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
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priv->rfkill_mngr.rfkill->user_claim_unsupported = 1;
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priv->rfkill_mngr.rfkill->dev.class->suspend = NULL;
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priv->rfkill_mngr.rfkill->dev.class->resume = NULL;
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priv->rfkill_mngr.input_dev = input_allocate_device();
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if (!priv->rfkill_mngr.input_dev) {
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IWL_ERROR("Unable to allocate rfkill input device.\n");
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ret = -ENOMEM;
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goto freed_rfkill;
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}
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priv->rfkill_mngr.input_dev->name = priv->cfg->name;
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priv->rfkill_mngr.input_dev->phys = wiphy_name(priv->hw->wiphy);
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priv->rfkill_mngr.input_dev->id.bustype = BUS_HOST;
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priv->rfkill_mngr.input_dev->id.vendor = priv->pci_dev->vendor;
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priv->rfkill_mngr.input_dev->dev.parent = device;
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priv->rfkill_mngr.input_dev->evbit[0] = BIT(EV_KEY);
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set_bit(KEY_WLAN, priv->rfkill_mngr.input_dev->keybit);
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ret = rfkill_register(priv->rfkill_mngr.rfkill);
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if (ret) {
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IWL_ERROR("Unable to register rfkill: %d\n", ret);
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goto free_input_dev;
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}
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ret = input_register_device(priv->rfkill_mngr.input_dev);
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if (ret) {
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IWL_ERROR("Unable to register rfkill input device: %d\n", ret);
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goto unregister_rfkill;
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}
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IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
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return ret;
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unregister_rfkill:
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rfkill_unregister(priv->rfkill_mngr.rfkill);
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priv->rfkill_mngr.rfkill = NULL;
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free_input_dev:
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input_free_device(priv->rfkill_mngr.input_dev);
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priv->rfkill_mngr.input_dev = NULL;
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freed_rfkill:
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if (priv->rfkill_mngr.rfkill != NULL)
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rfkill_free(priv->rfkill_mngr.rfkill);
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priv->rfkill_mngr.rfkill = NULL;
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error:
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IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
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return ret;
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}
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void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
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{
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if (priv->rfkill_mngr.input_dev)
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input_unregister_device(priv->rfkill_mngr.input_dev);
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if (priv->rfkill_mngr.rfkill)
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rfkill_unregister(priv->rfkill_mngr.rfkill);
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priv->rfkill_mngr.input_dev = NULL;
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priv->rfkill_mngr.rfkill = NULL;
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}
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/* set rf-kill to the right state. */
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void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
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{
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if (!priv->rfkill_mngr.rfkill)
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return;
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if (!iwl3945_is_rfkill(priv))
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priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
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else
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priv->rfkill_mngr.rfkill->state = RFKILL_STATE_OFF;
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}
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#endif
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/*****************************************************************************
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*
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* driver and module entry point
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