ARM: da8xx: use platform data for CFGCHIP syscon regmap

This converts from using a platform device for the CFGCHIP syscon
regmap to using platform data to pass the regmap to consumers.

A lazy getter function is used so that the regmap will only be
created if it is actually used. This function will also be used
in the clock init when we convert to the common clock framework.

The USB PHY driver is currently the only consumer. This driver is
updated to use platform data to get the CFGCHIP regmap instead of
syscon_regmap_lookup_by_pdevname().

Signed-off-by: David Lechner <david@lechnology.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/phy/ti/phy-da8xx-usb.c b/drivers/phy/ti/phy-da8xx-usb.c
index 5bd33d06df95..befb886ff121 100644
--- a/drivers/phy/ti/phy-da8xx-usb.c
+++ b/drivers/phy/ti/phy-da8xx-usb.c
@@ -20,6 +20,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/phy/phy.h>
+#include <linux/platform_data/phy-da8xx-usb.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 
@@ -145,6 +146,7 @@ static struct phy *da8xx_usb_phy_of_xlate(struct device *dev,
 static int da8xx_usb_phy_probe(struct platform_device *pdev)
 {
         struct device           *dev = &pdev->dev;
+        struct da8xx_usb_phy_platform_data *pdata = dev->platform_data;
         struct device_node      *node = dev->of_node;
         struct da8xx_usb_phy    *d_phy;
 
@@ -152,11 +154,11 @@ static int da8xx_usb_phy_probe(struct platform_device *pdev)
         if (!d_phy)
                 return -ENOMEM;
 
-        if (node)
+        if (pdata)
+                d_phy->regmap = pdata->cfgchip;
+        else
                 d_phy->regmap = syscon_regmap_lookup_by_compatible(
                                                         "ti,da830-cfgchip");
-        else
-                d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon");
         if (IS_ERR(d_phy->regmap)) {
                 dev_err(dev, "Failed to get syscon\n");
                 return PTR_ERR(d_phy->regmap);