2 files changed, 53 insertions, 5 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_sdio.c b/drivers/net/wireless/wl12xx/wl1251_sdio.c
index 7409c3468e25..d234285c2c81 100644
--- a/drivers/net/wireless/wl12xx/wl1251_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1251_sdio.c
@@ -25,6 +25,7 @@
 #include <linux/mmc/sdio_ids.h>
 #include <linux/platform_device.h>
 #include <linux/spi/wl12xx.h>
+#include <linux/irq.h>
 
 #include "wl1251.h"
 
@@ -134,18 +135,36 @@ static void wl1251_sdio_disable_irq(struct wl1251 *wl)
         sdio_release_host(func);
 }
 
+/* Interrupts when using dedicated WLAN_IRQ pin */
+static irqreturn_t wl1251_line_irq(int irq, void *cookie)
+{
+        struct wl1251 *wl = cookie;
+
+        ieee80211_queue_work(wl->hw, &wl->irq_work);
+
+        return IRQ_HANDLED;
+}
+
+static void wl1251_enable_line_irq(struct wl1251 *wl)
+{
+        return enable_irq(wl->irq);
+}
+
+static void wl1251_disable_line_irq(struct wl1251 *wl)
+{
+        return disable_irq(wl->irq);
+}
+
 static void wl1251_sdio_set_power(bool enable)
 {
 }
 
-static const struct wl1251_if_operations wl1251_sdio_ops = {
+static struct wl1251_if_operations wl1251_sdio_ops = {
         .read = wl1251_sdio_read,
         .write = wl1251_sdio_write,
         .write_elp = wl1251_sdio_write_elp,
         .read_elp = wl1251_sdio_read_elp,
         .reset = wl1251_sdio_reset,
-        .enable_irq = wl1251_sdio_enable_irq,
-        .disable_irq = wl1251_sdio_disable_irq,
 };
 
 static int wl1251_platform_probe(struct platform_device *pdev)
@@ -191,6 +210,7 @@ static int wl1251_sdio_probe(struct sdio_func *func,
                 goto release;
 
         sdio_set_block_size(func, 512);
+        sdio_release_host(func);
 
         SET_IEEE80211_DEV(hw, &func->dev);
         wl->if_priv = func;
@@ -199,17 +219,41 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 
         if (wl12xx_board_data != NULL) {
                 wl->set_power = wl12xx_board_data->set_power;
+                wl->irq = wl12xx_board_data->irq;
                 wl->use_eeprom = wl12xx_board_data->use_eeprom;
         }
 
-        sdio_release_host(func);
+        if (wl->irq) {
+                ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
+                if (ret < 0) {
+                        wl1251_error("request_irq() failed: %d", ret);
+                        goto disable;
+                }
+
+                set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+                disable_irq(wl->irq);
+
+                wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
+                wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
+
+                wl1251_info("using dedicated interrupt line");
+        } else {
+                wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
+                wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
+
+                wl1251_info("using SDIO interrupt");
+        }
+
         ret = wl1251_init_ieee80211(wl);
         if (ret)
-                goto disable;
+                goto out_free_irq;
 
         sdio_set_drvdata(func, wl);
         return ret;
 
+out_free_irq:
+        if (wl->irq)
+                free_irq(wl->irq, wl);
 disable:
         sdio_claim_host(func);
         sdio_disable_func(func);
@@ -222,6 +266,8 @@ static void __devexit wl1251_sdio_remove(struct sdio_func *func)
 {
         struct wl1251 *wl = sdio_get_drvdata(func);
 
+        if (wl->irq)
+                free_irq(wl->irq, wl);
         wl1251_free_hw(wl);
 
         sdio_claim_host(func);
diff --git a/include/linux/spi/wl12xx.h b/include/linux/spi/wl12xx.h
index aed64ed3dc8a..a223ecbc71ef 100644
--- a/include/linux/spi/wl12xx.h
+++ b/include/linux/spi/wl12xx.h
@@ -26,6 +26,8 @@
 
 struct wl12xx_platform_data {
         void (*set_power)(bool enable);
+        /* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
+        int irq;
         bool use_eeprom;
 };