i2c: New-style devices can support driver model wakeup flags

We need to be able to flag I2C devices, such as RTCs, which can issue wake
events (usually through IRQ lines).  This adds an i2c_board_info.flags bit,
and uses it to initialize the i2c device node.  (And shrinks a few lines
that were overly long.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 910a62de190d4e00e5320fcfaa5a8b1c2d26c9a6..06b4b9e1a23eb43a088b8dbf876f9253b755a31f 100644 (file)
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -226,7 +226,9 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
        client->adapter = adap;
 
        client->dev.platform_data = info->platform_data;
-       client->flags = info->flags;
+       device_init_wakeup(&client->dev, info->flags & I2C_CLIENT_WAKE);
+
+       client->flags = info->flags & ~I2C_CLIENT_WAKE;
        client->addr = info->addr;
        client->irq = info->irq;
 

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 2a32f2fd940d56fc6bf4d63ced9f9f75aa13995d..e4793feac2bb867a1c2cedea81cca2bb0730869a 100644 (file)
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -342,9 +342,10 @@ static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
 }
 
 /*flags for the client struct: */
-#define I2C_CLIENT_PEC  0x04                   /* Use Packet Error Checking */
-#define I2C_CLIENT_TEN 0x10                    /* we have a ten bit chip address       */
-                                               /* Must equal I2C_M_TEN below */
+#define I2C_CLIENT_PEC 0x04            /* Use Packet Error Checking */
+#define I2C_CLIENT_TEN 0x10            /* we have a ten bit chip address */
+                                       /* Must equal I2C_M_TEN below */
+#define I2C_CLIENT_WAKE        0x80            /* for board_info; true iff can wake */
 
 /* i2c adapter classes (bitmask) */
 #define I2C_CLASS_HWMON                (1<<0)  /* lm_sensors, ... */