dm: core: Add SPL Kconfig for REGMAP and SYSCON

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

diff --git a/drivers/core/device.c b/drivers/core/device.c
index caaf2319214a58ca56387232d74c2bd3213bab7d..758f39064cca9a4b288733cce1a1d8c1c00ff3ee 100644 (file)
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -11,10 +11,12 @@
 
 #include <common.h>
 #include <fdtdec.h>
+#include <fdt_support.h>
 #include <malloc.h>
 #include <dm/device.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>
+#include <dm/pinctrl.h>
 #include <dm/platdata.h>
 #include <dm/uclass.h>
 #include <dm/uclass-internal.h>
@@ -32,13 +34,16 @@ int device_bind(struct udevice *parent, const struct driver *drv,
        struct uclass *uc;
        int size, ret = 0;
 
-       *devp = NULL;
+       if (devp)
+               *devp = NULL;
        if (!name)
                return -EINVAL;
 
        ret = uclass_get(drv->id, &uc);
-       if (ret)
+       if (ret) {
+               debug("Missing uclass for driver %s\n", drv->name);
                return ret;
+       }
 
        dev = calloc(1, sizeof(struct udevice));
        if (!dev)
@@ -59,7 +64,7 @@ int device_bind(struct udevice *parent, const struct driver *drv,
 
        dev->seq = -1;
        dev->req_seq = -1;
-       if (IS_ENABLED(CONFIG_OF_CONTROL) && IS_ENABLED(CONFIG_DM_SEQ_ALIAS)) {
+       if (CONFIG_IS_ENABLED(OF_CONTROL) && IS_ENABLED(CONFIG_DM_SEQ_ALIAS)) {
                /*
                * Some devices, such as a SPI bus, I2C bus and serial ports
                * are numbered using aliases.
@@ -133,14 +138,15 @@ int device_bind(struct udevice *parent, const struct driver *drv,
 
        if (parent)
                dm_dbg("Bound device %s to %s\n", dev->name, parent->name);
-       *devp = dev;
+       if (devp)
+               *devp = dev;
 
        dev->flags |= DM_FLAG_BOUND;
 
        return 0;
 
 fail_child_post_bind:
-       if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+       if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
                if (drv->unbind && drv->unbind(dev)) {
                        dm_warn("unbind() method failed on dev '%s' on error path\n",
                                dev->name);
@@ -148,14 +154,14 @@ fail_child_post_bind:
        }
 
 fail_bind:
-       if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+       if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
                if (uclass_unbind_device(dev)) {
                        dm_warn("Failed to unbind dev '%s' on error path\n",
                                dev->name);
                }
        }
 fail_uclass_bind:
-       if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+       if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
                list_del(&dev->sibling_node);
                if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
                        free(dev->parent_platdata);
@@ -226,17 +232,17 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
        drv = dev->driver;
        assert(drv);
 
-       /* Allocate private data if requested */
-       if (drv->priv_auto_alloc_size) {
+       /* Allocate private data if requested and not reentered */
+       if (drv->priv_auto_alloc_size && !dev->priv) {
                dev->priv = alloc_priv(drv->priv_auto_alloc_size, drv->flags);
                if (!dev->priv) {
                        ret = -ENOMEM;
                        goto fail;
                }
        }
-       /* Allocate private data if requested */
+       /* Allocate private data if requested and not reentered */
        size = dev->uclass->uc_drv->per_device_auto_alloc_size;
-       if (size) {
+       if (size && !dev->uclass_priv) {
                dev->uclass_priv = calloc(1, size);
                if (!dev->uclass_priv) {
                        ret = -ENOMEM;
@@ -251,7 +257,7 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
                        size = dev->parent->uclass->uc_drv->
                                        per_child_auto_alloc_size;
                }
-               if (size) {
+               if (size && !dev->parent_priv) {
                        dev->parent_priv = alloc_priv(size, drv->flags);
                        if (!dev->parent_priv) {
                                ret = -ENOMEM;
@@ -264,6 +270,15 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
                ret = device_probe(dev->parent);
                if (ret)
                        goto fail;
+
+               /*
+                * The device might have already been probed during
+                * the call to device_probe() on its parent device
+                * (e.g. PCI bridge devices). Test the flags again
+                * so that we don't mess up the device.
+                */
+               if (dev->flags & DM_FLAG_ACTIVATED)
+                       return 0;
        }
 
        seq = uclass_resolve_seq(dev);
@@ -275,6 +290,13 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
 
        dev->flags |= DM_FLAG_ACTIVATED;
 
+       /*
+        * Process pinctrl for everything except the root device, and
+        * continue regardless of the result of pinctrl.
+        */
+       if (dev->parent)
+               pinctrl_select_state(dev, "default");
+
        ret = uclass_pre_probe_device(dev);
        if (ret)
                goto fail;
@@ -373,7 +395,7 @@ void *dev_get_uclass_priv(struct udevice *dev)
        return dev->uclass_priv;
 }
 
-void *dev_get_parentdata(struct udevice *dev)
+void *dev_get_parent_priv(struct udevice *dev)
 {
        if (!dev) {
                dm_warn("%s: null device\n", __func__);
@@ -561,11 +583,33 @@ const char *dev_get_uclass_name(struct udevice *dev)
 
 fdt_addr_t dev_get_addr(struct udevice *dev)
 {
-#ifdef CONFIG_OF_CONTROL
+#if CONFIG_IS_ENABLED(OF_CONTROL)
        fdt_addr_t addr;
 
-       addr = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
-       if (addr != FDT_ADDR_T_NONE) {
+       if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
+               const fdt32_t *reg;
+
+               reg = fdt_getprop(gd->fdt_blob, dev->of_offset, "reg", NULL);
+               if (!reg)
+                       return FDT_ADDR_T_NONE;
+
+               /*
+                * Use the full-fledged translate function for complex
+                * bus setups.
+                */
+               return fdt_translate_address((void *)gd->fdt_blob,
+                                            dev->of_offset, reg);
+       }
+
+       /*
+        * Use the "simple" translate function for less complex
+        * bus setups.
+        */
+       addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
+                                               dev->parent->of_offset,
+                                               dev->of_offset, "reg",
+                                               0, NULL);
+       if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
                if (device_get_uclass_id(dev->parent) == UCLASS_SIMPLE_BUS)
                        addr = simple_bus_translate(dev->parent, addr);
        }
@@ -603,3 +647,13 @@ bool device_is_last_sibling(struct udevice *dev)
                return false;
        return list_is_last(&dev->sibling_node, &parent->child_head);
 }
+
+int device_set_name(struct udevice *dev, const char *name)
+{
+       name = strdup(name);
+       if (!name)
+               return -ENOMEM;
+       dev->name = name;
+
+       return 0;
+}