Merge branch 'ima-memory-use-fixes'

[pandora-kernel.git] / drivers / net / wireless / wl12xx / wl1271_sdio.c

diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index 7059b5c..784ef34 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -29,14 +29,13 @@
 #include <linux/mmc/sdio_ids.h>
 #include <linux/mmc/card.h>
 #include <linux/gpio.h>
+#include <linux/wl12xx.h>
+#include <linux/pm_runtime.h>
 
 #include "wl1271.h"
 #include "wl12xx_80211.h"
 #include "wl1271_io.h"
 
-
-#define RX71_WL1271_IRQ_GPIO           42
-
 #ifndef SDIO_VENDOR_ID_TI
 #define SDIO_VENDOR_ID_TI              0x0097
 #endif
@@ -107,6 +106,8 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
        int ret;
        struct sdio_func *func = wl_to_func(wl);
 
+       sdio_claim_host(func);
+
        if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
                ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
                wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
@@ -122,9 +123,10 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
                wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
        }
 
+       sdio_release_host(func);
+
        if (ret)
                wl1271_error("sdio read failed (%d)", ret);
-
 }
 
 static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
@@ -133,6 +135,8 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
        int ret;
        struct sdio_func *func = wl_to_func(wl);
 
+       sdio_claim_host(func);
+
        if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
                sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
                wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
@@ -147,26 +151,49 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
                else
                        ret = sdio_memcpy_toio(func, addr, buf, len);
        }
+
+       sdio_release_host(func);
+
        if (ret)
                wl1271_error("sdio write failed (%d)", ret);
+}
 
+static int wl1271_sdio_power_on(struct wl1271 *wl)
+{
+       struct sdio_func *func = wl_to_func(wl);
+       int ret;
+
+       /* Power up the card */
+       ret = pm_runtime_get_sync(&func->dev);
+       if (ret < 0)
+               goto out;
+
+       sdio_claim_host(func);
+       sdio_enable_func(func);
+       sdio_release_host(func);
+
+out:
+       return ret;
 }
 
-static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
+static int wl1271_sdio_power_off(struct wl1271 *wl)
 {
        struct sdio_func *func = wl_to_func(wl);
 
-       /* Let the SDIO stack handle wlan_enable control, so we
-        * keep host claimed while wlan is in use to keep wl1271
-        * alive.
-        */
-       if (enable) {
-               sdio_claim_host(func);
-               sdio_enable_func(func);
-       } else {
-               sdio_disable_func(func);
-               sdio_release_host(func);
-       }
+       sdio_claim_host(func);
+       sdio_disable_func(func);
+       sdio_release_host(func);
+
+       /* Power down the card */
+       return pm_runtime_put_sync(&func->dev);
+}
+
+static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
+{
+       if (enable)
+               return wl1271_sdio_power_on(wl);
+       else
+               return wl1271_sdio_power_off(wl);
 }
 
 static struct wl1271_if_operations sdio_ops = {
@@ -184,6 +211,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
                                  const struct sdio_device_id *id)
 {
        struct ieee80211_hw *hw;
+       const struct wl12xx_platform_data *wlan_data;
        struct wl1271 *wl;
        int ret;
 
@@ -203,13 +231,16 @@ static int __devinit wl1271_probe(struct sdio_func *func,
        /* Grab access to FN0 for ELP reg. */
        func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
 
-       wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
-       if (wl->irq < 0) {
-               ret = wl->irq;
-               wl1271_error("could not get irq!");
+       wlan_data = wl12xx_get_platform_data();
+       if (IS_ERR(wlan_data)) {
+               ret = PTR_ERR(wlan_data);
+               wl1271_error("missing wlan platform data: %d", ret);
                goto out_free;
        }
 
+       wl->irq = wlan_data->irq;
+       wl->ref_clock = wlan_data->board_ref_clock;
+
        ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
        if (ret < 0) {
                wl1271_error("request_irq() failed: %d", ret);
@@ -230,6 +261,9 @@ static int __devinit wl1271_probe(struct sdio_func *func,
 
        sdio_set_drvdata(func, wl);
 
+       /* Tell PM core that we don't need the card to be powered now */
+       pm_runtime_put_noidle(&func->dev);
+
        wl1271_notice("initialized");
 
        return 0;
@@ -248,17 +282,39 @@ static void __devexit wl1271_remove(struct sdio_func *func)
 {
        struct wl1271 *wl = sdio_get_drvdata(func);
 
-       free_irq(wl->irq, wl);
+       /* Undo decrement done above in wl1271_probe */
+       pm_runtime_get_noresume(&func->dev);
 
        wl1271_unregister_hw(wl);
+       free_irq(wl->irq, wl);
        wl1271_free_hw(wl);
 }
 
+static int wl1271_suspend(struct device *dev)
+{
+       /* Tell MMC/SDIO core it's OK to power down the card
+        * (if it isn't already), but not to remove it completely */
+       return 0;
+}
+
+static int wl1271_resume(struct device *dev)
+{
+       return 0;
+}
+
+static const struct dev_pm_ops wl1271_sdio_pm_ops = {
+       .suspend        = wl1271_suspend,
+       .resume         = wl1271_resume,
+};
+
 static struct sdio_driver wl1271_sdio_driver = {
        .name           = "wl1271_sdio",
        .id_table       = wl1271_devices,
        .probe          = wl1271_probe,
        .remove         = __devexit_p(wl1271_remove),
+       .drv = {
+               .pm = &wl1271_sdio_pm_ops,
+       },
 };
 
 static int __init wl1271_init(void)