/**
* fpga_mgr_buf_load - load fpga from image in buffer
* @mgr: fpga manager
- * @flags: flags setting fpga confuration modes
+ * @info: fpga image specific information
* @buf: buffer contain fpga image
* @count: byte count of buf
*
* Step the low level fpga manager through the device-specific steps of getting
* an FPGA ready to be configured, writing the image to it, then doing whatever
* post-configuration steps necessary. This code assumes the caller got the
- * mgr pointer from of_fpga_mgr_get() and checked that it is not an error code.
+ * mgr pointer from of_fpga_mgr_get() or fpga_mgr_get() and checked that it is
+ * not an error code.
*
* Return: 0 on success, negative error code otherwise.
*/
-int fpga_mgr_buf_load(struct fpga_manager *mgr, u32 flags, const char *buf,
- size_t count)
+int fpga_mgr_buf_load(struct fpga_manager *mgr, struct fpga_image_info *info,
+ const char *buf, size_t count)
{
struct device *dev = &mgr->dev;
int ret;
/*
* Call the low level driver's write_init function. This will do the
* device-specific things to get the FPGA into the state where it is
- * ready to receive an FPGA image.
+ * ready to receive an FPGA image. The low level driver only gets to
+ * see the first initial_header_size bytes in the buffer.
*/
mgr->state = FPGA_MGR_STATE_WRITE_INIT;
- ret = mgr->mops->write_init(mgr, flags, buf, count);
+ ret = mgr->mops->write_init(mgr, info, buf,
+ min(mgr->mops->initial_header_size, count));
if (ret) {
dev_err(dev, "Error preparing FPGA for writing\n");
mgr->state = FPGA_MGR_STATE_WRITE_INIT_ERR;
* steps to finish and set the FPGA into operating mode.
*/
mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE;
- ret = mgr->mops->write_complete(mgr, flags);
+ ret = mgr->mops->write_complete(mgr, info);
if (ret) {
dev_err(dev, "Error after writing image data to FPGA\n");
mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE_ERR;
/**
* fpga_mgr_firmware_load - request firmware and load to fpga
* @mgr: fpga manager
- * @flags: flags setting fpga confuration modes
+ * @info: fpga image specific information
* @image_name: name of image file on the firmware search path
*
* Request an FPGA image using the firmware class, then write out to the FPGA.
* Update the state before each step to provide info on what step failed if
* there is a failure. This code assumes the caller got the mgr pointer
- * from of_fpga_mgr_get() and checked that it is not an error code.
+ * from of_fpga_mgr_get() or fpga_mgr_get() and checked that it is not an error
+ * code.
*
* Return: 0 on success, negative error code otherwise.
*/
-int fpga_mgr_firmware_load(struct fpga_manager *mgr, u32 flags,
+int fpga_mgr_firmware_load(struct fpga_manager *mgr,
+ struct fpga_image_info *info,
const char *image_name)
{
struct device *dev = &mgr->dev;
return ret;
}
- ret = fpga_mgr_buf_load(mgr, flags, fw->data, fw->size);
+ ret = fpga_mgr_buf_load(mgr, info, fw->data, fw->size);
release_firmware(fw);
};
ATTRIBUTE_GROUPS(fpga_mgr);
-static int fpga_mgr_of_node_match(struct device *dev, const void *data)
-{
- return dev->of_node == data;
-}
-
-/**
- * of_fpga_mgr_get - get an exclusive reference to a fpga mgr
- * @node: device node
- *
- * Given a device node, get an exclusive reference to a fpga mgr.
- *
- * Return: fpga manager struct or IS_ERR() condition containing error code.
- */
-struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
+struct fpga_manager *__fpga_mgr_get(struct device *dev)
{
struct fpga_manager *mgr;
- struct device *dev;
int ret = -ENODEV;
- dev = class_find_device(fpga_mgr_class, NULL, node,
- fpga_mgr_of_node_match);
- if (!dev)
- return ERR_PTR(-ENODEV);
-
mgr = to_fpga_manager(dev);
if (!mgr)
goto err_dev;
put_device(dev);
return ERR_PTR(ret);
}
+
+static int fpga_mgr_dev_match(struct device *dev, const void *data)
+{
+ return dev->parent == data;
+}
+
+/**
+ * fpga_mgr_get - get an exclusive reference to a fpga mgr
+ * @dev: parent device that fpga mgr was registered with
+ *
+ * Given a device, get an exclusive reference to a fpga mgr.
+ *
+ * Return: fpga manager struct or IS_ERR() condition containing error code.
+ */
+struct fpga_manager *fpga_mgr_get(struct device *dev)
+{
+ struct device *mgr_dev = class_find_device(fpga_mgr_class, NULL, dev,
+ fpga_mgr_dev_match);
+ if (!mgr_dev)
+ return ERR_PTR(-ENODEV);
+
+ return __fpga_mgr_get(mgr_dev);
+}
+EXPORT_SYMBOL_GPL(fpga_mgr_get);
+
+static int fpga_mgr_of_node_match(struct device *dev, const void *data)
+{
+ return dev->of_node == data;
+}
+
+/**
+ * of_fpga_mgr_get - get an exclusive reference to a fpga mgr
+ * @node: device node
+ *
+ * Given a device node, get an exclusive reference to a fpga mgr.
+ *
+ * Return: fpga manager struct or IS_ERR() condition containing error code.
+ */
+struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
+{
+ struct device *dev;
+
+ dev = class_find_device(fpga_mgr_class, NULL, node,
+ fpga_mgr_of_node_match);
+ if (!dev)
+ return ERR_PTR(-ENODEV);
+
+ return __fpga_mgr_get(dev);
+}
EXPORT_SYMBOL_GPL(of_fpga_mgr_get);
/**
projects / linux.git / blobdiff