[U-Boot] [PATCH V4 02/10] dm: core: Extend struct udevice by '.uclass_platdata' field.
Przemyslaw Marczak
p.marczak at samsung.com
Wed Apr 15 13:07:18 CEST 2015
This commit adds 'uclass_platdata' field to 'struct udevice', which
can be automatically allocated at bind. The allocation size is defined
in 'struct uclass_driver' as 'per_device_platdata_auto_alloc_size'.
New device's flag is added: DM_FLAG_ALLOC_UCLASS_PDATA, which is used
for memory freeing at device unbind method.
As for other udevice's fields, a complementary function is added:
- dev_get_uclass_platdata()
Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
Cc: Simon Glass <sjg at chromium.org>
Acked-by: Simon Glass <sjg at chromium.org>
---
Changes V2:
- none
Changes V3:
- none
Changes V4:
- add Acked-by
---
drivers/core/device-remove.c | 4 ++++
drivers/core/device.c | 33 +++++++++++++++++++++++++++++----
include/dm/device.h | 17 ++++++++++++++++-
include/dm/uclass.h | 4 ++++
4 files changed, 53 insertions(+), 5 deletions(-)
diff --git a/drivers/core/device-remove.c b/drivers/core/device-remove.c
index 7fee1c0..6a16b4f 100644
--- a/drivers/core/device-remove.c
+++ b/drivers/core/device-remove.c
@@ -92,6 +92,10 @@ int device_unbind(struct udevice *dev)
free(dev->platdata);
dev->platdata = NULL;
}
+ if (dev->flags & DM_FLAG_ALLOC_UCLASS_PDATA) {
+ free(dev->uclass_platdata);
+ dev->uclass_platdata = NULL;
+ }
if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
free(dev->parent_platdata);
dev->parent_platdata = NULL;
diff --git a/drivers/core/device.c b/drivers/core/device.c
index ccaa99c..80eb55b 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -30,7 +30,7 @@ int device_bind(struct udevice *parent, const struct driver *drv,
{
struct udevice *dev;
struct uclass *uc;
- int ret = 0;
+ int size, ret = 0;
*devp = NULL;
if (!name)
@@ -79,9 +79,19 @@ int device_bind(struct udevice *parent, const struct driver *drv,
goto fail_alloc1;
}
}
- if (parent) {
- int size = parent->driver->per_child_platdata_auto_alloc_size;
+ size = uc->uc_drv->per_device_platdata_auto_alloc_size;
+ if (size) {
+ dev->flags |= DM_FLAG_ALLOC_UCLASS_PDATA;
+ dev->uclass_platdata = calloc(1, size);
+ if (!dev->uclass_platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc2;
+ }
+ }
+
+ if (parent) {
+ size = parent->driver->per_child_platdata_auto_alloc_size;
if (!size) {
size = parent->uclass->uc_drv->
per_child_platdata_auto_alloc_size;
@@ -91,7 +101,7 @@ int device_bind(struct udevice *parent, const struct driver *drv,
dev->parent_platdata = calloc(1, size);
if (!dev->parent_platdata) {
ret = -ENOMEM;
- goto fail_alloc2;
+ goto fail_alloc3;
}
}
}
@@ -139,6 +149,11 @@ fail_uclass_bind:
free(dev->parent_platdata);
dev->parent_platdata = NULL;
}
+fail_alloc3:
+ if (dev->flags & DM_FLAG_ALLOC_UCLASS_PDATA) {
+ free(dev->uclass_platdata);
+ dev->uclass_platdata = NULL;
+ }
fail_alloc2:
if (dev->flags & DM_FLAG_ALLOC_PDATA) {
free(dev->platdata);
@@ -314,6 +329,16 @@ void *dev_get_parent_platdata(struct udevice *dev)
return dev->parent_platdata;
}
+void *dev_get_uclass_platdata(struct udevice *dev)
+{
+ if (!dev) {
+ dm_warn("%s: null device", __func__);
+ return NULL;
+ }
+
+ return dev->uclass_platdata;
+}
+
void *dev_get_priv(struct udevice *dev)
{
if (!dev) {
diff --git a/include/dm/device.h b/include/dm/device.h
index c11342c..ad002fe 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -30,8 +30,11 @@ struct driver_info;
/* DM is responsible for allocating and freeing parent_platdata */
#define DM_FLAG_ALLOC_PARENT_PDATA (1 << 3)
+/* DM is responsible for allocating and freeing uclass_platdata */
+#define DM_FLAG_ALLOC_UCLASS_PDATA (1 << 4)
+
/* Allocate driver private data on a DMA boundary */
-#define DM_FLAG_ALLOC_PRIV_DMA (1 << 4)
+#define DM_FLAG_ALLOC_PRIV_DMA (1 << 5)
/**
* struct udevice - An instance of a driver
@@ -54,6 +57,7 @@ struct driver_info;
* @name: Name of device, typically the FDT node name
* @platdata: Configuration data for this device
* @parent_platdata: The parent bus's configuration data for this device
+ * @uclass_platdata: The uclass's configuration data for this device
* @of_offset: Device tree node offset for this device (- for none)
* @driver_data: Driver data word for the entry that matched this device with
* its driver
@@ -75,6 +79,7 @@ struct udevice {
const char *name;
void *platdata;
void *parent_platdata;
+ void *uclass_platdata;
int of_offset;
ulong driver_data;
struct udevice *parent;
@@ -210,6 +215,16 @@ void *dev_get_platdata(struct udevice *dev);
void *dev_get_parent_platdata(struct udevice *dev);
/**
+ * dev_get_uclass_platdata() - Get the uclass platform data for a device
+ *
+ * This checks that dev is not NULL, but no other checks for now
+ *
+ * @dev Device to check
+ * @return uclass's platform data, or NULL if none
+ */
+void *dev_get_uclass_platdata(struct udevice *dev);
+
+/**
* dev_get_parentdata() - Get the parent data for a device
*
* The parent data is data stored in the device but owned by the parent.
diff --git a/include/dm/uclass.h b/include/dm/uclass.h
index d57d804..b271472 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -65,6 +65,9 @@ struct udevice;
* @per_device_auto_alloc_size: Each device can hold private data owned
* by the uclass. If required this will be automatically allocated if this
* value is non-zero.
+ * @per_device_platdata_auto_alloc_size: Each device can hold platform data
+ * owned by the uclass as 'dev->uclass_platdata'. If the value is non-zero,
+ * then this will be automatically allocated.
* @per_child_auto_alloc_size: Each child device (of a parent in this
* uclass) can hold parent data for the device/uclass. This value is only
* used as a falback if this member is 0 in the driver.
@@ -90,6 +93,7 @@ struct uclass_driver {
int (*destroy)(struct uclass *class);
int priv_auto_alloc_size;
int per_device_auto_alloc_size;
+ int per_device_platdata_auto_alloc_size;
int per_child_auto_alloc_size;
int per_child_platdata_auto_alloc_size;
const void *ops;
--
1.9.1
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