[U-Boot] [PATCH 2/2] fdt: allow fdtdec_get_addr_size_*() to translate addresses
Stephen Warren
swarren at wwwdotorg.org
Mon Aug 1 22:52:29 CEST 2016
From: Stephen Warren <swarren at nvidia.com>
Some code may want to read reg values from DT, but from nodes that aren't
associated with DM devices, so using dev_get_addr_index() isn't
appropriate. In this case, fdtdec_get_addr_size_*() are the functions to
use. However, "translation" (via the chain of ranges properties in parent
nodes) may still be desirable. Add a function parameter to request that,
and implement it. Update all call sites to default to the original
behaviour.
Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
drivers/core/device.c | 2 +-
drivers/gpio/mpc85xx_gpio.c | 2 +-
drivers/i2c/fsl_i2c.c | 2 +-
drivers/mmc/msm_sdhci.c | 3 ++-
drivers/net/cpsw.c | 3 ++-
drivers/spmi/spmi-msm.c | 5 +++--
include/fdtdec.h | 14 +++++++++++---
lib/fdtdec.c | 20 +++++++++++++-------
8 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/drivers/core/device.c b/drivers/core/device.c
index 5bb1d7793dd6..b737f1c78907 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -671,7 +671,7 @@ fdt_addr_t dev_get_addr_index(struct udevice *dev, int index)
addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
dev->parent->of_offset,
dev->of_offset, "reg",
- index, NULL);
+ index, NULL, false);
if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
if (device_get_uclass_id(dev->parent) ==
UCLASS_SIMPLE_BUS)
diff --git a/drivers/gpio/mpc85xx_gpio.c b/drivers/gpio/mpc85xx_gpio.c
index 3754a8215c36..168c696c4dc0 100644
--- a/drivers/gpio/mpc85xx_gpio.c
+++ b/drivers/gpio/mpc85xx_gpio.c
@@ -170,7 +170,7 @@ static int mpc85xx_gpio_ofdata_to_platdata(struct udevice *dev) {
fdt_size_t size;
addr = fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev->of_offset,
- "reg", 0, &size);
+ "reg", 0, &size, false);
plat->addr = addr;
plat->size = size;
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index 407c4a7b10b8..c3f826d68c75 100644
--- a/drivers/i2c/fsl_i2c.c
+++ b/drivers/i2c/fsl_i2c.c
@@ -587,7 +587,7 @@ static int fsl_i2c_ofdata_to_platdata(struct udevice *bus)
fdt_size_t size;
addr = fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, bus->of_offset,
- "reg", 0, &size);
+ "reg", 0, &size, false);
dev->base = map_sysmem(CONFIG_SYS_IMMR + addr, size);
diff --git a/drivers/mmc/msm_sdhci.c b/drivers/mmc/msm_sdhci.c
index 70a8d96eeef3..4b95e1837f63 100644
--- a/drivers/mmc/msm_sdhci.c
+++ b/drivers/mmc/msm_sdhci.c
@@ -180,7 +180,8 @@ static int msm_ofdata_to_platdata(struct udevice *dev)
priv->base = (void *)fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
parent->of_offset,
dev->of_offset,
- "reg", 1, NULL);
+ "reg", 1, NULL,
+ false);
if (priv->base == (void *)FDT_ADDR_T_NONE ||
host->ioaddr == (void *)FDT_ADDR_T_NONE)
return -EINVAL;
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 2ce4ec69f1df..2a458955ed05 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -1145,7 +1145,8 @@ static const struct eth_ops cpsw_eth_ops = {
static inline fdt_addr_t cpsw_get_addr_by_node(const void *fdt, int node)
{
- return fdtdec_get_addr_size_auto_noparent(fdt, node, "reg", 0, NULL);
+ return fdtdec_get_addr_size_auto_noparent(fdt, node, "reg", 0, NULL,
+ false);
}
static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
diff --git a/drivers/spmi/spmi-msm.c b/drivers/spmi/spmi-msm.c
index 0cef505e37d0..48bc15759645 100644
--- a/drivers/spmi/spmi-msm.c
+++ b/drivers/spmi/spmi-msm.c
@@ -153,11 +153,12 @@ static int msm_spmi_probe(struct udevice *dev)
priv->spmi_core = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
parent->of_offset,
dev->of_offset,
- "reg", 1, NULL);
+ "reg", 1, NULL,
+ false);
priv->spmi_obs = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
parent->of_offset,
dev->of_offset, "reg",
- 2, NULL);
+ 2, NULL, false);
if (priv->arb_chnl == FDT_ADDR_T_NONE ||
priv->spmi_core == FDT_ADDR_T_NONE ||
priv->spmi_obs == FDT_ADDR_T_NONE)
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 70ea0bfc0bae..aeb6bab1c4c6 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -297,11 +297,13 @@ int fdtdec_next_compatible_subnode(const void *blob, int node,
* @param na the number of cells used to represent an address
* @param ns the number of cells used to represent a size
* @param sizep a pointer to store the size into. Use NULL if not required
+ * @param translate Indicates whether to translate the returned value
+ * using the parent node's ranges property.
* @return address, if found, or FDT_ADDR_T_NONE if not
*/
fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
const char *prop_name, int index, int na, int ns,
- fdt_size_t *sizep);
+ fdt_size_t *sizep, bool translate);
/*
* Look up an address property in a node and return the parsed address, and
@@ -317,10 +319,13 @@ fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
* @param prop_name name of property to find
* @param index which address to retrieve from a list of addresses. Often 0.
* @param sizep a pointer to store the size into. Use NULL if not required
+ * @param translate Indicates whether to translate the returned value
+ * using the parent node's ranges property.
* @return address, if found, or FDT_ADDR_T_NONE if not
*/
fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
- int node, const char *prop_name, int index, fdt_size_t *sizep);
+ int node, const char *prop_name, int index, fdt_size_t *sizep,
+ bool translate);
/*
* Look up an address property in a node and return the parsed address, and
@@ -340,10 +345,13 @@ fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
* @param prop_name name of property to find
* @param index which address to retrieve from a list of addresses. Often 0.
* @param sizep a pointer to store the size into. Use NULL if not required
+ * @param translate Indicates whether to translate the returned value
+ * using the parent node's ranges property.
* @return address, if found, or FDT_ADDR_T_NONE if not
*/
fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
- const char *prop_name, int index, fdt_size_t *sizep);
+ const char *prop_name, int index, fdt_size_t *sizep,
+ bool translate);
/*
* Look up an address property in a node and return the parsed address.
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 462a24f96a97..7d99bdb8ca47 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -9,6 +9,7 @@
#include <errno.h>
#include <serial.h>
#include <libfdt.h>
+#include <fdt_support.h>
#include <fdtdec.h>
#include <asm/sections.h>
#include <linux/ctype.h>
@@ -77,7 +78,7 @@ const char *fdtdec_get_compatible(enum fdt_compat_id id)
fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
const char *prop_name, int index, int na, int ns,
- fdt_size_t *sizep)
+ fdt_size_t *sizep, bool translate)
{
const fdt32_t *prop, *prop_end;
const fdt32_t *prop_addr, *prop_size, *prop_after_size;
@@ -112,7 +113,10 @@ fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
return FDT_ADDR_T_NONE;
}
- addr = fdtdec_get_number(prop_addr, na);
+ if (translate)
+ addr = fdt_translate_address(blob, node, prop_addr);
+ else
+ addr = fdtdec_get_number(prop_addr, na);
if (sizep) {
*sizep = fdtdec_get_number(prop_size, ns);
@@ -126,7 +130,8 @@ fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
}
fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
- int node, const char *prop_name, int index, fdt_size_t *sizep)
+ int node, const char *prop_name, int index, fdt_size_t *sizep,
+ bool translate)
{
int na, ns;
@@ -147,11 +152,12 @@ fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
debug("na=%d, ns=%d, ", na, ns);
return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
- ns, sizep);
+ ns, sizep, translate);
}
fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
- const char *prop_name, int index, fdt_size_t *sizep)
+ const char *prop_name, int index, fdt_size_t *sizep,
+ bool translate)
{
int parent;
@@ -164,7 +170,7 @@ fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
}
return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
- index, sizep);
+ index, sizep, translate);
}
fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
@@ -174,7 +180,7 @@ fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
sizeof(fdt_addr_t) / sizeof(fdt32_t),
- ns, sizep);
+ ns, sizep, false);
}
fdt_addr_t fdtdec_get_addr(const void *blob, int node,
--
2.9.2
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