pl011: Convert CONFIG_PL011_SERIAL to Kconfig

[u-boot] / drivers / core / syscon-uclass.c

diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c
index a0666d0bacd7e2d8cfcaca0f8ae13d85f7256873..a69937e63c15d6db1a96baa6b28715c7f3ddb51a 100644 (file)
--- a/drivers/core/syscon-uclass.c
+++ b/drivers/core/syscon-uclass.c
@@ -29,7 +29,20 @@ static int syscon_pre_probe(struct udevice *dev)
 {
        struct syscon_uc_info *priv = dev_get_uclass_priv(dev);
 
+       /*
+        * With OF_PLATDATA we really have no way of knowing the format of
+        * the device-specific platform data. So we assume that it starts with
+        * a 'reg' member, and this holds a single address and size. Drivers
+        * using OF_PLATDATA will need to ensure that this is true.
+        */
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+       struct syscon_base_platdata *plat = dev_get_platdata(dev);
+
+       return regmap_init_mem_platdata(dev, plat->reg, ARRAY_SIZE(plat->reg),
+                                       &priv->regmap);
+#else
        return regmap_init_mem(dev, &priv->regmap);
+#endif
 }
 
 int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)
@@ -38,6 +51,7 @@ int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)
        struct uclass *uc;
        int ret;
 
+       *devp = NULL;
        ret = uclass_get(UCLASS_SYSCON, &uc);
        if (ret)
                return ret;
@@ -81,3 +95,17 @@ UCLASS_DRIVER(syscon) = {
        .per_device_auto_alloc_size = sizeof(struct syscon_uc_info),
        .pre_probe = syscon_pre_probe,
 };
+
+static const struct udevice_id generic_syscon_ids[] = {
+       { .compatible = "syscon" },
+       { }
+};
+
+U_BOOT_DRIVER(generic_syscon) = {
+       .name   = "syscon",
+       .id     = UCLASS_SYSCON,
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+       .bind           = dm_scan_fdt_dev,
+#endif
+       .of_match = generic_syscon_ids,
+};