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path: root/drivers/net/wireless/wl1251
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Diffstat (limited to 'drivers/net/wireless/wl1251')
-rw-r--r--drivers/net/wireless/wl1251/boot.c1
-rw-r--r--drivers/net/wireless/wl1251/main.c15
-rw-r--r--drivers/net/wireless/wl1251/sdio.c103
-rw-r--r--drivers/net/wireless/wl1251/spi.c9
-rw-r--r--drivers/net/wireless/wl1251/wl1251.h1
5 files changed, 86 insertions, 43 deletions
diff --git a/drivers/net/wireless/wl1251/boot.c b/drivers/net/wireless/wl1251/boot.c
index 61572dfa1f60..d729daf8e841 100644
--- a/drivers/net/wireless/wl1251/boot.c
+++ b/drivers/net/wireless/wl1251/boot.c
@@ -19,7 +19,6 @@
*
*/
-#include <linux/gpio.h>
#include <linux/slab.h>
#include "reg.h"
diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c
index 7a8762553cdc..012e1a4016fe 100644
--- a/drivers/net/wireless/wl1251/main.c
+++ b/drivers/net/wireless/wl1251/main.c
@@ -52,14 +52,14 @@ void wl1251_disable_interrupts(struct wl1251 *wl)
wl->if_ops->disable_irq(wl);
}
-static void wl1251_power_off(struct wl1251 *wl)
+static int wl1251_power_off(struct wl1251 *wl)
{
- wl->set_power(false);
+ return wl->if_ops->power(wl, false);
}
-static void wl1251_power_on(struct wl1251 *wl)
+static int wl1251_power_on(struct wl1251 *wl)
{
- wl->set_power(true);
+ return wl->if_ops->power(wl, true);
}
static int wl1251_fetch_firmware(struct wl1251 *wl)
@@ -152,9 +152,12 @@ static void wl1251_fw_wakeup(struct wl1251 *wl)
static int wl1251_chip_wakeup(struct wl1251 *wl)
{
- int ret = 0;
+ int ret;
+
+ ret = wl1251_power_on(wl);
+ if (ret < 0)
+ return ret;
- wl1251_power_on(wl);
msleep(WL1251_POWER_ON_SLEEP);
wl->if_ops->reset(wl);
diff --git a/drivers/net/wireless/wl1251/sdio.c b/drivers/net/wireless/wl1251/sdio.c
index 74ba9ced5393..d550b5e68d3c 100644
--- a/drivers/net/wireless/wl1251/sdio.c
+++ b/drivers/net/wireless/wl1251/sdio.c
@@ -26,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/wl12xx.h>
#include <linux/irq.h>
+#include <linux/pm_runtime.h>
#include "wl1251.h"
@@ -42,8 +43,6 @@ struct wl1251_sdio {
u32 elp_val;
};
-static struct wl12xx_platform_data *wl12xx_board_data;
-
static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
struct wl1251_sdio *wl_sdio = wl->if_priv;
@@ -171,8 +170,42 @@ static void wl1251_disable_line_irq(struct wl1251 *wl)
return disable_irq(wl->irq);
}
-static void wl1251_sdio_set_power(bool enable)
+static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable)
{
+ struct sdio_func *func = wl_to_func(wl);
+ int ret;
+
+ if (enable) {
+ /*
+ * Power is controlled by runtime PM, but we still call board
+ * callback in case it wants to do any additional setup,
+ * for example enabling clock buffer for the module.
+ */
+ if (wl->set_power)
+ wl->set_power(true);
+
+ ret = pm_runtime_get_sync(&func->dev);
+ if (ret < 0)
+ goto out;
+
+ sdio_claim_host(func);
+ sdio_enable_func(func);
+ sdio_release_host(func);
+ } else {
+ sdio_claim_host(func);
+ sdio_disable_func(func);
+ sdio_release_host(func);
+
+ ret = pm_runtime_put_sync(&func->dev);
+ if (ret < 0)
+ goto out;
+
+ if (wl->set_power)
+ wl->set_power(false);
+ }
+
+out:
+ return ret;
}
static struct wl1251_if_operations wl1251_sdio_ops = {
@@ -181,30 +214,7 @@ static struct wl1251_if_operations wl1251_sdio_ops = {
.write_elp = wl1251_sdio_write_elp,
.read_elp = wl1251_sdio_read_elp,
.reset = wl1251_sdio_reset,
-};
-
-static int wl1251_platform_probe(struct platform_device *pdev)
-{
- if (pdev->id != -1) {
- wl1251_error("can only handle single device");
- return -ENODEV;
- }
-
- wl12xx_board_data = pdev->dev.platform_data;
- return 0;
-}
-
-/*
- * Dummy platform_driver for passing platform_data to this driver,
- * until we have a way to pass this through SDIO subsystem or
- * some other way.
- */
-static struct platform_driver wl1251_platform_driver = {
- .driver = {
- .name = "wl1251_data",
- .owner = THIS_MODULE,
- },
- .probe = wl1251_platform_probe,
+ .power = wl1251_sdio_set_power,
};
static int wl1251_sdio_probe(struct sdio_func *func,
@@ -214,6 +224,7 @@ static int wl1251_sdio_probe(struct sdio_func *func,
struct wl1251 *wl;
struct ieee80211_hw *hw;
struct wl1251_sdio *wl_sdio;
+ const struct wl12xx_platform_data *wl12xx_board_data;
hw = wl1251_alloc_hw();
if (IS_ERR(hw))
@@ -239,9 +250,9 @@ static int wl1251_sdio_probe(struct sdio_func *func,
wl_sdio->func = func;
wl->if_priv = wl_sdio;
wl->if_ops = &wl1251_sdio_ops;
- wl->set_power = wl1251_sdio_set_power;
- if (wl12xx_board_data != NULL) {
+ wl12xx_board_data = wl12xx_get_platform_data();
+ if (!IS_ERR(wl12xx_board_data)) {
wl->set_power = wl12xx_board_data->set_power;
wl->irq = wl12xx_board_data->irq;
wl->use_eeprom = wl12xx_board_data->use_eeprom;
@@ -273,6 +284,10 @@ static int wl1251_sdio_probe(struct sdio_func *func,
goto out_free_irq;
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);
+
return ret;
out_free_irq:
@@ -294,6 +309,9 @@ static void __devexit wl1251_sdio_remove(struct sdio_func *func)
struct wl1251 *wl = sdio_get_drvdata(func);
struct wl1251_sdio *wl_sdio = wl->if_priv;
+ /* Undo decrement done above in wl1251_probe */
+ pm_runtime_get_noresume(&func->dev);
+
if (wl->irq)
free_irq(wl->irq, wl);
kfree(wl_sdio);
@@ -305,23 +323,37 @@ static void __devexit wl1251_sdio_remove(struct sdio_func *func)
sdio_release_host(func);
}
+static int wl1251_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 wl1251_resume(struct device *dev)
+{
+ return 0;
+}
+
+static const struct dev_pm_ops wl1251_sdio_pm_ops = {
+ .suspend = wl1251_suspend,
+ .resume = wl1251_resume,
+};
+
static struct sdio_driver wl1251_sdio_driver = {
.name = "wl1251_sdio",
.id_table = wl1251_devices,
.probe = wl1251_sdio_probe,
.remove = __devexit_p(wl1251_sdio_remove),
+ .drv.pm = &wl1251_sdio_pm_ops,
};
static int __init wl1251_sdio_init(void)
{
int err;
- err = platform_driver_register(&wl1251_platform_driver);
- if (err) {
- wl1251_error("failed to register platform driver: %d", err);
- return err;
- }
-
err = sdio_register_driver(&wl1251_sdio_driver);
if (err)
wl1251_error("failed to register sdio driver: %d", err);
@@ -331,7 +363,6 @@ static int __init wl1251_sdio_init(void)
static void __exit wl1251_sdio_exit(void)
{
sdio_unregister_driver(&wl1251_sdio_driver);
- platform_driver_unregister(&wl1251_platform_driver);
wl1251_notice("unloaded");
}
diff --git a/drivers/net/wireless/wl1251/spi.c b/drivers/net/wireless/wl1251/spi.c
index 88fa8e69d0d1..ac872b38960f 100644
--- a/drivers/net/wireless/wl1251/spi.c
+++ b/drivers/net/wireless/wl1251/spi.c
@@ -215,12 +215,21 @@ static void wl1251_spi_disable_irq(struct wl1251 *wl)
return disable_irq(wl->irq);
}
+static int wl1251_spi_set_power(struct wl1251 *wl, bool enable)
+{
+ if (wl->set_power)
+ wl->set_power(enable);
+
+ return 0;
+}
+
static const struct wl1251_if_operations wl1251_spi_ops = {
.read = wl1251_spi_read,
.write = wl1251_spi_write,
.reset = wl1251_spi_reset_wake,
.enable_irq = wl1251_spi_enable_irq,
.disable_irq = wl1251_spi_disable_irq,
+ .power = wl1251_spi_set_power,
};
static int __devinit wl1251_spi_probe(struct spi_device *spi)
diff --git a/drivers/net/wireless/wl1251/wl1251.h b/drivers/net/wireless/wl1251/wl1251.h
index 47d2653baccd..c0ce2c8b43b8 100644
--- a/drivers/net/wireless/wl1251/wl1251.h
+++ b/drivers/net/wireless/wl1251/wl1251.h
@@ -256,6 +256,7 @@ struct wl1251_if_operations {
void (*write)(struct wl1251 *wl, int addr, void *buf, size_t len);
void (*read_elp)(struct wl1251 *wl, int addr, u32 *val);
void (*write_elp)(struct wl1251 *wl, int addr, u32 val);
+ int (*power)(struct wl1251 *wl, bool enable);
void (*reset)(struct wl1251 *wl);
void (*enable_irq)(struct wl1251 *wl);
void (*disable_irq)(struct wl1251 *wl);