Merge branch 'for-grant' of git://git.jdl.com/software/linux-3.0 into devicetree/next
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
new file mode 100644
index 0000000..e855278
--- /dev/null
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -0,0 +1,40 @@
+Device tree binding vendor prefix registry. Keep list in alphabetical order.
+
+This isn't an exhaustive list, but you should add new prefixes to it before
+using them to avoid name-space collisions.
+
+adi Analog Devices, Inc.
+amcc Applied Micro Circuits Corporation (APM, formally AMCC)
+apm Applied Micro Circuits Corporation (APM)
+arm ARM Ltd.
+atmel Atmel Corporation
+chrp Common Hardware Reference Platform
+dallas Maxim Integrated Products (formerly Dallas Semiconductor)
+denx Denx Software Engineering
+epson Seiko Epson Corp.
+est ESTeem Wireless Modems
+fsl Freescale Semiconductor
+GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+gef GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+hp Hewlett Packard
+ibm International Business Machines (IBM)
+idt Integrated Device Technologies, Inc.
+intercontrol Inter Control Group
+linux Linux-specific binding
+marvell Marvell Technology Group Ltd.
+maxim Maxim Integrated Products
+mosaixtech Mosaix Technologies, Inc.
+national National Semiconductor
+nintendo Nintendo
+nvidia NVIDIA
+nxp NXP Semiconductors
+powervr Imagination Technologies
+qcom Qualcomm, Inc.
+ramtron Ramtron International
+samsung Samsung Semiconductor
+schindler Schindler
+simtek
+sirf SiRF Technology, Inc.
+stericsson ST-Ericsson
+ti Texas Instruments
+xlnx Xilinx
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 3ff22e3..b970562 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -17,14 +17,39 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
+#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
+/**
+ * struct alias_prop - Alias property in 'aliases' node
+ * @link: List node to link the structure in aliases_lookup list
+ * @alias: Alias property name
+ * @np: Pointer to device_node that the alias stands for
+ * @id: Index value from end of alias name
+ * @stem: Alias string without the index
+ *
+ * The structure represents one alias property of 'aliases' node as
+ * an entry in aliases_lookup list.
+ */
+struct alias_prop {
+ struct list_head link;
+ const char *alias;
+ struct device_node *np;
+ int id;
+ char stem[0];
+};
+
+static LIST_HEAD(aliases_lookup);
+
struct device_node *allnodes;
struct device_node *of_chosen;
+struct device_node *of_aliases;
+
+static DEFINE_MUTEX(of_aliases_mutex);
/* use when traversing tree through the allnext, child, sibling,
* or parent members of struct device_node.
@@ -632,6 +657,35 @@
EXPORT_SYMBOL_GPL(of_property_read_u32_array);
/**
+ * of_property_read_u64 - Find and read a 64 bit integer from a property
+ * @np: device node from which the property value is to be read.
+ * @propname: name of the property to be searched.
+ * @out_value: pointer to return value, modified only if return value is 0.
+ *
+ * Search for a property in a device node and read a 64-bit value from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_value is modified only if a valid u64 value can be decoded.
+ */
+int of_property_read_u64(const struct device_node *np, const char *propname,
+ u64 *out_value)
+{
+ struct property *prop = of_find_property(np, propname, NULL);
+
+ if (!prop)
+ return -EINVAL;
+ if (!prop->value)
+ return -ENODATA;
+ if (sizeof(*out_value) > prop->length)
+ return -EOVERFLOW;
+ *out_value = of_read_number(prop->value, 2);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u64);
+
+/**
* of_property_read_string - Find and read a string from a property
* @np: device node from which the property value is to be read.
* @propname: name of the property to be searched.
@@ -988,3 +1042,99 @@
}
#endif /* defined(CONFIG_OF_DYNAMIC) */
+static void of_alias_add(struct alias_prop *ap, struct device_node *np,
+ int id, const char *stem, int stem_len)
+{
+ ap->np = np;
+ ap->id = id;
+ strncpy(ap->stem, stem, stem_len);
+ ap->stem[stem_len] = 0;
+ list_add_tail(&ap->link, &aliases_lookup);
+ pr_debug("adding DT alias:%s: stem=%s id=%i node=%s\n",
+ ap->alias, ap->stem, ap->id, np ? np->full_name : NULL);
+}
+
+/**
+ * of_alias_scan - Scan all properties of 'aliases' node
+ *
+ * The function scans all the properties of 'aliases' node and populate
+ * the the global lookup table with the properties. It returns the
+ * number of alias_prop found, or error code in error case.
+ *
+ * @dt_alloc: An allocator that provides a virtual address to memory
+ * for the resulting tree
+ */
+void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
+{
+ struct property *pp;
+
+ of_chosen = of_find_node_by_path("/chosen");
+ if (of_chosen == NULL)
+ of_chosen = of_find_node_by_path("/chosen@0");
+ of_aliases = of_find_node_by_path("/aliases");
+ if (!of_aliases)
+ return;
+
+ for_each_property(pp, of_aliases->properties) {
+ const char *start = pp->name;
+ const char *end = start + strlen(start);
+ struct device_node *np;
+ struct alias_prop *ap;
+ int id, len;
+
+ /* Skip those we do not want to proceed */
+ if (!strcmp(pp->name, "name") ||
+ !strcmp(pp->name, "phandle") ||
+ !strcmp(pp->name, "linux,phandle"))
+ continue;
+
+ np = of_find_node_by_path(pp->value);
+ if (!np)
+ continue;
+
+ /* walk the alias backwards to extract the id and work out
+ * the 'stem' string */
+ while (isdigit(*(end-1)) && end > start)
+ end--;
+ len = end - start;
+
+ if (kstrtoint(end, 10, &id) < 0)
+ continue;
+
+ /* Allocate an alias_prop with enough space for the stem */
+ ap = dt_alloc(sizeof(*ap) + len + 1, 4);
+ if (!ap)
+ continue;
+ ap->alias = start;
+ of_alias_add(ap, np, id, start, len);
+ }
+}
+
+/**
+ * of_alias_get_id - Get alias id for the given device_node
+ * @np: Pointer to the given device_node
+ * @stem: Alias stem of the given device_node
+ *
+ * The function travels the lookup table to get alias id for the given
+ * device_node and alias stem. It returns the alias id if find it.
+ */
+int of_alias_get_id(struct device_node *np, const char *stem)
+{
+ struct alias_prop *app;
+ int id = -ENODEV;
+
+ mutex_lock(&of_aliases_mutex);
+ list_for_each_entry(app, &aliases_lookup, link) {
+ if (strcmp(app->stem, stem) != 0)
+ continue;
+
+ if (np == app->np) {
+ id = app->id;
+ break;
+ }
+ }
+ mutex_unlock(&of_aliases_mutex);
+
+ return id;
+}
+EXPORT_SYMBOL_GPL(of_alias_get_id);
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 65200af..aeec35b 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -707,10 +707,8 @@
__unflatten_device_tree(initial_boot_params, &allnodes,
early_init_dt_alloc_memory_arch);
- /* Get pointer to OF "/chosen" node for use everywhere */
- of_chosen = of_find_node_by_path("/chosen");
- if (of_chosen == NULL)
- of_chosen = of_find_node_by_path("/chosen@0");
+ /* Get pointer to "/chosen" and "/aliasas" nodes for use everywhere */
+ of_alias_scan(early_init_dt_alloc_memory_arch);
}
#endif /* CONFIG_OF_EARLY_FLATTREE */
diff --git a/drivers/of/pdt.c b/drivers/of/pdt.c
index 4d87b5d..bc5b399 100644
--- a/drivers/of/pdt.c
+++ b/drivers/of/pdt.c
@@ -229,6 +229,11 @@
return ret;
}
+static void *kernel_tree_alloc(u64 size, u64 align)
+{
+ return prom_early_alloc(size);
+}
+
void __init of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops)
{
struct device_node **nextp;
@@ -245,4 +250,7 @@
nextp = &allnodes->allnext;
allnodes->child = of_pdt_build_tree(allnodes,
of_pdt_prom_ops->getchild(allnodes->phandle), &nextp);
+
+ /* Get pointer to "/chosen" and "/aliasas" nodes for use everywhere */
+ of_alias_scan(kernel_tree_alloc);
}
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index 60e049b..2075200 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -472,8 +472,6 @@
{},
};
MODULE_DEVICE_TABLE(of, altera_jtaguart_match);
-#else
-#define altera_jtaguart_match NULL
#endif /* CONFIG_OF */
static struct platform_driver altera_jtaguart_platform_driver = {
@@ -482,7 +480,7 @@
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
- .of_match_table = altera_jtaguart_match,
+ .of_match_table = of_match_ptr(altera_jtaguart_match),
},
};
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index 50bc5a5..0abd31d 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -616,8 +616,6 @@
{},
};
MODULE_DEVICE_TABLE(of, altera_uart_match);
-#else
-#define altera_uart_match NULL
#endif /* CONFIG_OF */
static struct platform_driver altera_uart_platform_driver = {
@@ -626,7 +624,7 @@
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
- .of_match_table = altera_uart_match,
+ .of_match_table = of_match_ptr(altera_uart_match),
},
};
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 7e91b3d..9989877 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1286,17 +1286,20 @@
static int serial_imx_probe_dt(struct imx_port *sport,
struct platform_device *pdev)
{
- static int portnum = 0;
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_id =
of_match_device(imx_uart_dt_ids, &pdev->dev);
+ int ret;
if (!np)
return -ENODEV;
- sport->port.line = portnum++;
- if (sport->port.line >= UART_NR)
- return -EINVAL;
+ ret = of_alias_get_id(np, "serial");
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to get alias id, errno %d\n", ret);
+ return -ENODEV;
+ }
+ sport->port.line = ret;
if (of_get_property(np, "fsl,uart-has-rtscts", NULL))
sport->have_rtscts = 1;
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 8af1ed8..0aed022 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -568,8 +568,6 @@
{}
};
MODULE_DEVICE_TABLE(of, ulite_of_match);
-#else /* CONFIG_OF */
-#define ulite_of_match NULL
#endif /* CONFIG_OF */
static int __devinit ulite_probe(struct platform_device *pdev)
@@ -609,7 +607,7 @@
.driver = {
.owner = THIS_MODULE,
.name = "uartlite",
- .of_match_table = ulite_of_match,
+ .of_match_table = of_match_ptr(ulite_of_match),
},
};
diff --git a/include/linux/of.h b/include/linux/of.h
index 9180dc5..1cc9930 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -68,6 +68,7 @@
/* Pointer for first entry in chain of all nodes. */
extern struct device_node *allnodes;
extern struct device_node *of_chosen;
+extern struct device_node *of_aliases;
extern rwlock_t devtree_lock;
static inline bool of_have_populated_dt(void)
@@ -199,6 +200,8 @@
const char *propname,
u32 *out_values,
size_t sz);
+extern int of_property_read_u64(const struct device_node *np,
+ const char *propname, u64 *out_value);
extern int of_property_read_string(struct device_node *np,
const char *propname,
@@ -209,6 +212,9 @@
extern const void *of_get_property(const struct device_node *node,
const char *name,
int *lenp);
+#define for_each_property(pp, properties) \
+ for (pp = properties; pp != NULL; pp = pp->next)
+
extern int of_n_addr_cells(struct device_node *np);
extern int of_n_size_cells(struct device_node *np);
extern const struct of_device_id *of_match_node(
@@ -221,6 +227,9 @@
const char *list_name, const char *cells_name, int index,
struct device_node **out_node, const void **out_args);
+extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
+extern int of_alias_get_id(struct device_node *np, const char *stem);
+
extern int of_machine_is_compatible(const char *compat);
extern int prom_add_property(struct device_node* np, struct property* prop);
@@ -235,6 +244,7 @@
extern void of_detach_node(struct device_node *);
#endif
+#define of_match_ptr(_ptr) (_ptr)
#else /* CONFIG_OF */
static inline bool of_have_populated_dt(void)
@@ -242,6 +252,16 @@
return false;
}
+#define for_each_child_of_node(parent, child) \
+ while (0)
+
+static inline struct property *of_find_property(const struct device_node *np,
+ const char *name,
+ int *lenp)
+{
+ return NULL;
+}
+
static inline int of_property_read_u32_array(const struct device_node *np,
const char *propname,
u32 *out_values, size_t sz)
@@ -263,6 +283,13 @@
return NULL;
}
+static inline int of_property_read_u64(const struct device_node *np,
+ const char *propname, u64 *out_value)
+{
+ return -ENOSYS;
+}
+
+#define of_match_ptr(_ptr) NULL
#endif /* CONFIG_OF */
static inline int of_property_read_u32(const struct device_node *np,