sysreset: watchdog: Move watchdog reference to plat data

Currently, the wdt_reboot driver always gets its watchdog device
reference from an OF node. This prevents selecting a watchdog at
runtime. Move the watchdog device reference to the plat data, so
the driver can be bound with the reference pre-provided. The
reference will still be acquired from the OF node if it is not
already provided.

Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/sysreset/sysreset_watchdog.c b/drivers/sysreset/sysreset_watchdog.c
index c7ae368..b723f56 100644 (file)
--- a/drivers/sysreset/sysreset_watchdog.c
+++ b/drivers/sysreset/sysreset_watchdog.c
@@ -9,16 +9,16 @@
 #include <sysreset.h>
 #include <wdt.h>
 
-struct wdt_reboot_priv {
+struct wdt_reboot_plat {
        struct udevice *wdt;
 };
 
 static int wdt_reboot_request(struct udevice *dev, enum sysreset_t type)
 {
-       struct wdt_reboot_priv *priv = dev_get_priv(dev);
+       struct wdt_reboot_plat *plat = dev_get_plat(dev);
        int ret;
 
-       ret = wdt_expire_now(priv->wdt, 0);
+       ret = wdt_expire_now(plat->wdt, 0);
        if (ret)
                return ret;
 
@@ -29,13 +29,13 @@ static struct sysreset_ops wdt_reboot_ops = {
        .request = wdt_reboot_request,
 };
 
-static int wdt_reboot_probe(struct udevice *dev)
+static int wdt_reboot_of_to_plat(struct udevice *dev)
 {
-       struct wdt_reboot_priv *priv = dev_get_priv(dev);
+       struct wdt_reboot_plat *plat = dev_get_plat(dev);
        int err;
 
        err = uclass_get_device_by_phandle(UCLASS_WDT, dev,
-                                          "wdt", &priv->wdt);
+                                          "wdt", &plat->wdt);
        if (err) {
                pr_err("unable to find wdt device\n");
                return err;
@@ -53,7 +53,7 @@ U_BOOT_DRIVER(wdt_reboot) = {
        .name = "wdt_reboot",
        .id = UCLASS_SYSRESET,
        .of_match = wdt_reboot_ids,
+       .of_to_plat     = wdt_reboot_of_to_plat,
+       .plat_auto      = sizeof(struct wdt_reboot_plat),
        .ops = &wdt_reboot_ops,
-       .priv_auto      = sizeof(struct wdt_reboot_priv),
-       .probe = wdt_reboot_probe,
 };