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--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -158,6 +158,8 @@ void bcma_core_chipcommon_init(struct bc
}
cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);
+ spin_lock_init(&cc->gpio_lock);
+
cc->setup_done = true;
}
@@ -197,34 +199,81 @@ u32 bcma_chipco_irq_status(struct bcma_d
u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
{
- return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_in);
u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
- return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_out);
u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
- return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_outen);
u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
- return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
- return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_intmask);
u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
- return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
+ unsigned long flags;
+ u32 res;
+
+ spin_lock_irqsave(&cc->gpio_lock, flags);
+ res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
+ spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+ return res;
}
+EXPORT_SYMBOL_GPL(bcma_chipco_gpio_polarity);
#ifdef CONFIG_BCMA_DRIVER_MIPS
void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -555,6 +555,9 @@ struct bcma_drv_cc {
#endif /* CONFIG_BCMA_DRIVER_MIPS */
u32 ticks_per_ms;
struct platform_device *watchdog;
+
+ /* Lock for GPIO register access. */
+ spinlock_t gpio_lock;
};
/* Register access */
@@ -584,13 +587,22 @@ void bcma_chipco_irq_mask(struct bcma_dr
u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask);
+#define BCMA_CC_GPIO_LINES 16
+
/* Chipcommon GPIO pin access. */
-u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask);
-u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value);
-u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value);
-u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value);
-u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value);
-u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value);
+extern u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask);
+extern u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value);
+extern u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value);
+extern u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask,
+ u32 value);
+extern u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask,
+ u32 value);
+extern u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask,
+ u32 value);
+static inline int bcma_chipco_gpio_count(void)
+{
+ return BCMA_CC_GPIO_LINES;
+}
/* PMU support */
extern void bcma_pmu_init(struct bcma_drv_cc *cc);
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