i2c: cdns: Read address from DT in ofdata_to_platdata

Extract reading IP base address in function which is designed for it.
Also enable option to read more information from DT in this function.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c
index 909cea24182efe4fd20cafba076b7b87bf6605fb..66bd580aad4b7185c5b1c029031abb292458f487 100644 (file)
--- a/drivers/i2c/i2c-cdns.c
+++ b/drivers/i2c/i2c-cdns.c
@@ -125,10 +125,6 @@ static int cdns_i2c_probe(struct udevice *dev)
 {
        struct i2c_cdns_bus *bus = dev_get_priv(dev);
 
-       bus->regs = (struct cdns_i2c_regs *)dev_get_addr(dev);
-       if (!bus->regs)
-               return -ENOMEM;
-
        /* TODO: Calculate dividers based on CPU_CLK_1X */
        /* 111MHz / ( (3 * 17) * 22 ) = ~100KHz */
        writel((16 << CDNS_I2C_CONTROL_DIV_B_SHIFT) |
@@ -313,6 +309,17 @@ static int cdns_i2c_xfer(struct udevice *dev, struct i2c_msg *msg,
        return 0;
 }
 
+static int cdns_i2c_ofdata_to_platdata(struct udevice *dev)
+{
+       struct i2c_cdns_bus *i2c_bus = dev_get_priv(dev);
+
+       i2c_bus->regs = (struct cdns_i2c_regs *)dev_get_addr(dev);
+       if (!i2c_bus->regs)
+               return -ENOMEM;
+
+       return 0;
+}
+
 static const struct dm_i2c_ops cdns_i2c_ops = {
        .xfer = cdns_i2c_xfer,
        .probe_chip = cdns_i2c_probe_chip,
@@ -330,6 +337,7 @@ U_BOOT_DRIVER(cdns_i2c) = {
        .of_match = cdns_i2c_of_match,
        .probe = cdns_i2c_probe,
        .remove = cdns_i2c_remove,
+       .ofdata_to_platdata = cdns_i2c_ofdata_to_platdata,
        .priv_auto_alloc_size = sizeof(struct i2c_cdns_bus),
        .ops = &cdns_i2c_ops,
 };