mmc: fsl_esdhc: workaround for hardware 3.3v IO reliability issue

[oweals/u-boot.git] / drivers / core / device-remove.c

diff --git a/drivers/core/device-remove.c b/drivers/core/device-remove.c
index 3c6ab42f7d620a2aac9763f07cdbdb909072030d..efdb0f29058f641837d936389563ceb47543d980 100644 (file)
--- a/drivers/core/device-remove.c
+++ b/drivers/core/device-remove.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Device manager
  *
@@ -5,29 +6,20 @@
  *
  * (C) Copyright 2012
  * Pavel Herrmann <morpheus.ibis@gmail.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <errno.h>
+#include <log.h>
 #include <malloc.h>
 #include <dm/device.h>
 #include <dm/device-internal.h>
 #include <dm/uclass.h>
 #include <dm/uclass-internal.h>
 #include <dm/util.h>
+#include <power-domain.h>
 
-/**
- * device_chld_unbind() - Unbind all device's children from the device
- *
- * On error, the function continues to unbind all children, and reports the
- * first error.
- *
- * @dev:       The device that is to be stripped of its children
- * @return 0 on success, -ve on error
- */
-static int device_chld_unbind(struct udevice *dev)
+int device_chld_unbind(struct udevice *dev, struct driver *drv)
 {
        struct udevice *pos, *n;
        int ret, saved_ret = 0;
@@ -35,21 +27,22 @@ static int device_chld_unbind(struct udevice *dev)
        assert(dev);
 
        list_for_each_entry_safe(pos, n, &dev->child_head, sibling_node) {
+               if (drv && (pos->driver != drv))
+                       continue;
+
                ret = device_unbind(pos);
-               if (ret && !saved_ret)
+               if (ret && !saved_ret) {
+                       log_warning("device '%s' failed to unbind\n",
+                                   pos->name);
                        saved_ret = ret;
+               }
        }
 
-       return saved_ret;
+       return log_ret(saved_ret);
 }
 
-/**
- * device_chld_remove() - Stop all device's children
- * @dev:       The device whose children are to be removed
- * @pre_os_remove: Flag, if this functions is called in the pre-OS stage
- * @return 0 on success, -ve on error
- */
-static int device_chld_remove(struct udevice *dev, uint flags)
+int device_chld_remove(struct udevice *dev, struct driver *drv,
+                      uint flags)
 {
        struct udevice *pos, *n;
        int ret;
@@ -57,6 +50,9 @@ static int device_chld_remove(struct udevice *dev, uint flags)
        assert(dev);
 
        list_for_each_entry_safe(pos, n, &dev->child_head, sibling_node) {
+               if (drv && (pos->driver != drv))
+                       continue;
+
                ret = device_remove(pos, flags);
                if (ret)
                        return ret;
@@ -71,13 +67,13 @@ int device_unbind(struct udevice *dev)
        int ret;
 
        if (!dev)
-               return -EINVAL;
+               return log_msg_ret("dev", -EINVAL);
 
        if (dev->flags & DM_FLAG_ACTIVATED)
-               return -EINVAL;
+               return log_msg_ret("active", -EINVAL);
 
        if (!(dev->flags & DM_FLAG_BOUND))
-               return -EINVAL;
+               return log_msg_ret("not-bound", -EINVAL);
 
        drv = dev->driver;
        assert(drv);
@@ -85,12 +81,12 @@ int device_unbind(struct udevice *dev)
        if (drv->unbind) {
                ret = drv->unbind(dev);
                if (ret)
-                       return ret;
+                       return log_msg_ret("unbind", ret);
        }
 
-       ret = device_chld_unbind(dev);
+       ret = device_chld_unbind(dev, NULL);
        if (ret)
-               return ret;
+               return log_msg_ret("child unbind", ret);
 
        if (dev->flags & DM_FLAG_ALLOC_PDATA) {
                free(dev->platdata);
@@ -106,7 +102,7 @@ int device_unbind(struct udevice *dev)
        }
        ret = uclass_unbind_device(dev);
        if (ret)
-               return ret;
+               return log_msg_ret("uc", ret);
 
        if (dev->parent)
                list_del(&dev->sibling_node);
@@ -148,6 +144,7 @@ void device_free(struct udevice *dev)
                        dev->parent_priv = NULL;
                }
        }
+       dev->flags &= ~DM_FLAG_PLATDATA_VALID;
 
        devres_release_probe(dev);
 }
@@ -179,7 +176,7 @@ int device_remove(struct udevice *dev, uint flags)
        if (ret)
                return ret;
 
-       ret = device_chld_remove(dev, flags);
+       ret = device_chld_remove(dev, NULL, flags);
        if (ret)
                goto err;
 
@@ -201,6 +198,12 @@ int device_remove(struct udevice *dev, uint flags)
                }
        }
 
+       if (!(flags & DM_REMOVE_NO_PD) &&
+           !(drv->flags &
+             (DM_FLAG_DEFAULT_PD_CTRL_OFF | DM_FLAG_REMOVE_WITH_PD_ON)) &&
+           dev != gd->cur_serial_dev)
+               dev_power_domain_off(dev);
+
        if (flags_remove(flags, drv->flags)) {
                device_free(dev);