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@xxxxxxxxx>
Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@xxxxxxxxx>
Signed-off-by: Zhu Yi <yi.zhu@xxxxxxxxx>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index a9b3eda..a774978 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -36,6 +36,10 @@
#include <linux/kernel.h>
#include <net/ieee80211_radiotap.h>
+/*used for rfkill*/
+#include <linux/rfkill.h>
+#include <linux/input.h>
+
/* Hardware specific file defines the PCI IDs table for that hardware module */
extern struct pci_device_id iwl3945_hw_card_ids[];
@@ -686,6 +690,23 @@ enum {
#endif
+#ifdef CONFIG_IWLWIFI_RFKILL
+struct iwl3945_priv;
+
+struct iwl3945_rfkill_mngr {
+ struct rfkill *rfkill;
+ struct input_dev *input_dev;
+};
+
+void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv);
+void iwl3945_rfkill_unregister(struct iwl3945_priv *priv);
+int iwl3945_rfkill_init(struct iwl3945_priv *priv);
+#else
+static inline void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv) {}
+static inline void iwl3945_rfkill_unregister(struct iwl3945_priv *priv) {}
+static inline int iwl3945_rfkill_init(struct iwl3945_priv *priv) { return 0; }
+#endif
+
#define IWL_MAX_NUM_QUEUES IWL39_MAX_NUM_QUEUES
struct iwl3945_priv {
@@ -779,6 +800,10 @@ struct iwl3945_priv {
struct iwl3945_init_alive_resp card_alive_init;
struct iwl3945_alive_resp card_alive;
+#ifdef CONFIG_IWLWIFI_RFKILL
+ struct iwl3945_rfkill_mngr rfkill_mngr;
+#endif
+
#ifdef CONFIG_IWL3945_LEDS
struct iwl3945_led led[IWL_LED_TRG_MAX];
unsigned long last_blink_time;
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index cca2119..eabbb85 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -5913,7 +5913,9 @@ static void __iwl3945_down(struct iwl3945_priv *priv)
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
STATUS_GEO_CONFIGURED |
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
- STATUS_IN_SUSPEND;
+ STATUS_IN_SUSPEND |
+ test_bit(STATUS_EXIT_PENDING, &priv->status) <<
+ STATUS_EXIT_PENDING;
goto exit;
}
@@ -5928,7 +5930,9 @@ static void __iwl3945_down(struct iwl3945_priv *priv)
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
STATUS_IN_SUSPEND |
test_bit(STATUS_FW_ERROR, &priv->status) <<
- STATUS_FW_ERROR;
+ STATUS_FW_ERROR |
+ test_bit(STATUS_EXIT_PENDING, &priv->status) <<
+ STATUS_EXIT_PENDING;
spin_lock_irqsave(&priv->lock, flags);
iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
@@ -6000,11 +6004,12 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
else {
set_bit(STATUS_RF_KILL_HW, &priv->status);
if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
+ iwl3945_rfkill_set_hw_state(priv);
IWL_WARNING("Radio disabled by HW RF Kill switch\n");
return -ENODEV;
}
}
-
+ iwl3945_rfkill_set_hw_state(priv);
iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
rc = iwl3945_hw_nic_init(priv);
@@ -6060,6 +6065,7 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
set_bit(STATUS_EXIT_PENDING, &priv->status);
__iwl3945_down(priv);
+ clear_bit(STATUS_EXIT_PENDING, &priv->status);
/* tried to restart and config the device for as long as our
* patience could withstand */
@@ -6127,6 +6133,8 @@ static void iwl3945_bg_rf_kill(struct work_struct *work)
"Kill switch must be turned off for "
"wireless networking to work.\n");
}
+
+ iwl3945_rfkill_set_hw_state(priv);
mutex_unlock(&priv->mutex);
}
@@ -7409,37 +7417,6 @@ static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
#endif /* CONFIG_IWL3945_DEBUG */
-static ssize_t show_rf_kill(struct device *d,
- struct device_attribute *attr, char *buf)
-{
- /*
- * 0 - RF kill not enabled
- * 1 - SW based RF kill active (sysfs)
- * 2 - HW based RF kill active
- * 3 - Both HW and SW based RF kill active
- */
- struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
- int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
- (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
-
- return sprintf(buf, "%i\n", val);
-}
-
-static ssize_t store_rf_kill(struct device *d,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
-
- mutex_lock(&priv->mutex);
- iwl3945_radio_kill_sw(priv, buf[0] == '1');
- mutex_unlock(&priv->mutex);
-
- return count;
-}
-
-static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
-
static ssize_t show_temperature(struct device *d,
struct device_attribute *attr, char *buf)
{
@@ -7925,7 +7902,6 @@ static struct attribute *iwl3945_sysfs_entries[] = {
#endif
&dev_attr_power_level.attr,
&dev_attr_retry_rate.attr,
- &dev_attr_rf_kill.attr,
&dev_attr_rs_window.attr,
&dev_attr_statistics.attr,
&dev_attr_status.attr,
@@ -8166,6 +8142,11 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
pci_save_state(pdev);
pci_disable_device(pdev);
+ err = iwl3945_rfkill_init(priv);
+ if (err)
+ IWL_ERROR("Unable to initialize RFKILL system. "
+ "Ignoring error: %d\n", err);
+
return 0;
out_free_geos:
@@ -8228,6 +8209,7 @@ static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
+ iwl3945_rfkill_unregister(priv);
iwl3945_dealloc_ucode_pci(priv);
if (priv->rxq.bd)
@@ -8296,6 +8278,140 @@ static int iwl3945_pci_resume(struct pci_dev *pdev)
#endif /* CONFIG_PM */
+/*************** RFKILL FUNCTIONS **********/
+#ifdef CONFIG_IWLWIFI_RFKILL
+/* software rf-kill from user */
+static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
+{
+ struct iwl3945_priv *priv = data;
+ int err = 0;
+
+ if (!priv->rfkill_mngr.rfkill)
+ return 0;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return 0;
+
+ IWL_DEBUG_RF_KILL("we recieved soft RFKILL set to state %d\n", state);
+ mutex_lock(&priv->mutex);
+
+ switch (state) {
+ case RFKILL_STATE_ON:
+ iwl3945_radio_kill_sw(priv, 0);
+ /* if HW rf-kill is set dont allow ON state */
+ if (iwl3945_is_rfkill(priv))
+ err = -EBUSY;
+ break;
+ case RFKILL_STATE_OFF:
+ iwl3945_radio_kill_sw(priv, 1);
+ if (!iwl3945_is_rfkill(priv))
+ err = -EBUSY;
+ break;
+ }
+ mutex_unlock(&priv->mutex);
+
+ return err;
+}
+
+int iwl3945_rfkill_init(struct iwl3945_priv *priv)
+{
+ struct device *device = wiphy_dev(priv->hw->wiphy);
+ int ret = 0;
+
+ BUG_ON(device == NULL);
+
+ IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
+ priv->rfkill_mngr.rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
+ if (!priv->rfkill_mngr.rfkill) {
+ IWL_ERROR("Unable to allocate rfkill device.\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ priv->rfkill_mngr.rfkill->name = priv->cfg->name;
+ priv->rfkill_mngr.rfkill->data = priv;
+ priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
+ priv->rfkill_mngr.rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
+ priv->rfkill_mngr.rfkill->user_claim_unsupported = 1;
+
+ priv->rfkill_mngr.rfkill->dev.class->suspend = NULL;
+ priv->rfkill_mngr.rfkill->dev.class->resume = NULL;
+
+ priv->rfkill_mngr.input_dev = input_allocate_device();
+ if (!priv->rfkill_mngr.input_dev) {
+ IWL_ERROR("Unable to allocate rfkill input device.\n");
+ ret = -ENOMEM;
+ goto freed_rfkill;
+ }
+
+ priv->rfkill_mngr.input_dev->name = priv->cfg->name;
+ priv->rfkill_mngr.input_dev->phys = wiphy_name(priv->hw->wiphy);
+ priv->rfkill_mngr.input_dev->id.bustype = BUS_HOST;
+ priv->rfkill_mngr.input_dev->id.vendor = priv->pci_dev->vendor;
+ priv->rfkill_mngr.input_dev->dev.parent = device;
+ priv->rfkill_mngr.input_dev->evbit[0] = BIT(EV_KEY);
+ set_bit(KEY_WLAN, priv->rfkill_mngr.input_dev->keybit);
+
+ ret = rfkill_register(priv->rfkill_mngr.rfkill);
+ if (ret) {
+ IWL_ERROR("Unable to register rfkill: %d\n", ret);
+ goto free_input_dev;
+ }
+
+ ret = input_register_device(priv->rfkill_mngr.input_dev);
+ if (ret) {
+ IWL_ERROR("Unable to register rfkill input device: %d\n", ret);
+ goto unregister_rfkill;
+ }
+
+ IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
+ return ret;
+
+unregister_rfkill:
+ rfkill_unregister(priv->rfkill_mngr.rfkill);
+ priv->rfkill_mngr.rfkill = NULL;
+
+free_input_dev:
+ input_free_device(priv->rfkill_mngr.input_dev);
+ priv->rfkill_mngr.input_dev = NULL;
+
+freed_rfkill:
+ if (priv->rfkill_mngr.rfkill != NULL)
+ rfkill_free(priv->rfkill_mngr.rfkill);
+ priv->rfkill_mngr.rfkill = NULL;
+
+error:
+ IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
+ return ret;
+}
+
+void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
+{
+
+ if (priv->rfkill_mngr.input_dev)
+ input_unregister_device(priv->rfkill_mngr.input_dev);
+
+ if (priv->rfkill_mngr.rfkill)
+ rfkill_unregister(priv->rfkill_mngr.rfkill);
+
+ priv->rfkill_mngr.input_dev = NULL;
+ priv->rfkill_mngr.rfkill = NULL;
+}
+
+/* set rf-kill to the right state. */
+void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
+{
+
+ if (!priv->rfkill_mngr.rfkill)
+ return;
+
+ if (!iwl3945_is_rfkill(priv))
+ priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
+ else
+ priv->rfkill_mngr.rfkill->state = RFKILL_STATE_OFF;
+}
+#endif
+
/*****************************************************************************
*
* driver and module entry point
--
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