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authorAnatolij Gustschin <agust@denx.de>2009-04-07 02:01:42 +0000
committerDavid S. Miller <davem@davemloft.net>2009-04-13 14:51:23 -0700
commita8729eb302a5b5da8b0b4d29582c42648a2e0f12 (patch)
tree88af13216c6c7ae1b7a802e65996f6a0db447a4b /include
parent140bc92903287cff4545e358c1651e4b7312cbd3 (diff)
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phylib: Allow early-out in phy_change
Marvell 88E1121R Dual PHY device can be hardware-configured to use shared interrupt pin for both PHY ports. For such PHY configurations using shared PHY interrupt phy_interrupt() handler will also schedule a work for PHY port which didn't cause an interrupt. This patch adds a possibility for PHY drivers to provide did_interrupt() function which reports if the PHY (or a PHY port in a multi-PHY device) generated an interrupt. This function is called in phy_change() as phy_change() shouldn't proceed if it is invoked for a PHY which didn't cause an interrupt. So check for interrupt originator in phy_change() to allow early-out. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/phy.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 32cf14a4b03..97e40cb6b58 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -388,6 +388,12 @@ struct phy_driver {
/* Enables or disables interrupts */
int (*config_intr)(struct phy_device *phydev);
+ /*
+ * Checks if the PHY generated an interrupt.
+ * For multi-PHY devices with shared PHY interrupt pin
+ */
+ int (*did_interrupt)(struct phy_device *phydev);
+
/* Clears up any memory if needed */
void (*remove)(struct phy_device *phydev);