wl1251: spi: add vio regulator support
This patch adds support for requesting the regulator powering
the vio pin.
Signed-off-by: Sebastian Reichel <sre@debian.org>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ti/wl1251/spi.c b/drivers/net/wireless/ti/wl1251/spi.c
index 6abcbc3..0a8aacc 100644
--- a/drivers/net/wireless/ti/wl1251/spi.c
+++ b/drivers/net/wireless/ti/wl1251/spi.c
@@ -27,6 +27,7 @@
#include <linux/spi/spi.h>
#include <linux/wl12xx.h>
#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
#include "wl1251.h"
#include "reg.h"
@@ -306,13 +307,26 @@
irq_set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
- ret = wl1251_init_ieee80211(wl);
+ wl->vio = devm_regulator_get(&spi->dev, "vio");
+ if (IS_ERR(wl->vio)) {
+ ret = PTR_ERR(wl->vio);
+ wl1251_error("vio regulator missing: %d", ret);
+ goto out_free;
+ }
+
+ ret = regulator_enable(wl->vio);
if (ret)
goto out_free;
+ ret = wl1251_init_ieee80211(wl);
+ if (ret)
+ goto disable_regulator;
+
return 0;
- out_free:
+disable_regulator:
+ regulator_disable(wl->vio);
+out_free:
ieee80211_free_hw(hw);
return ret;
@@ -324,6 +338,7 @@
free_irq(wl->irq, wl);
wl1251_free_hw(wl);
+ regulator_disable(wl->vio);
return 0;
}
diff --git a/drivers/net/wireless/ti/wl1251/wl1251.h b/drivers/net/wireless/ti/wl1251/wl1251.h
index 389fe25..16dae52 100644
--- a/drivers/net/wireless/ti/wl1251/wl1251.h
+++ b/drivers/net/wireless/ti/wl1251/wl1251.h
@@ -280,6 +280,8 @@
int irq;
bool use_eeprom;
+ struct regulator *vio;
+
spinlock_t wl_lock;
enum wl1251_state state;