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path: root/drivers/ssb/pcmcia.c
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Diffstat (limited to 'drivers/ssb/pcmcia.c')
-rw-r--r--drivers/ssb/pcmcia.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c
index 46816cda8b98..84b3a845a8a8 100644
--- a/drivers/ssb/pcmcia.c
+++ b/drivers/ssb/pcmcia.c
@@ -172,6 +172,22 @@ static int select_core_and_segment(struct ssb_device *dev,
return 0;
}
+static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset)
+{
+ struct ssb_bus *bus = dev->bus;
+ unsigned long flags;
+ int err;
+ u8 value = 0xFF;
+
+ spin_lock_irqsave(&bus->bar_lock, flags);
+ err = select_core_and_segment(dev, &offset);
+ if (likely(!err))
+ value = readb(bus->mmio + offset);
+ spin_unlock_irqrestore(&bus->bar_lock, flags);
+
+ return value;
+}
+
static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
{
struct ssb_bus *bus = dev->bus;
@@ -206,6 +222,20 @@ static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset)
return (lo | (hi << 16));
}
+static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value)
+{
+ struct ssb_bus *bus = dev->bus;
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&bus->bar_lock, flags);
+ err = select_core_and_segment(dev, &offset);
+ if (likely(!err))
+ writeb(value, bus->mmio + offset);
+ mmiowb();
+ spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+
static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
{
struct ssb_bus *bus = dev->bus;
@@ -238,8 +268,10 @@ static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value)
/* Not "static", as it's used in main.c */
const struct ssb_bus_ops ssb_pcmcia_ops = {
+ .read8 = ssb_pcmcia_read8,
.read16 = ssb_pcmcia_read16,
.read32 = ssb_pcmcia_read32,
+ .write8 = ssb_pcmcia_write8,
.write16 = ssb_pcmcia_write16,
.write32 = ssb_pcmcia_write32,
};