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authorAlan Tull <atull@opensource.altera.com>2016-11-01 14:14:26 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-10 17:03:35 +0100
commit1df2865f8dd9d56cb76aa7aa1298921e7bece2af (patch)
tree13bfefb2d88b52d1d326867d91dd0c016cc83075 /drivers/fpga/fpga-mgr.c
parenta33ddf80b67a79530c3aa2c9f87e2bbd3aea3e22 (diff)
downloadlinux-1df2865f8dd9d56cb76aa7aa1298921e7bece2af.tar.gz
fpga-mgr: add fpga image information struct
This patch adds a minor change in the FPGA Manager API to hold information that is specific to an FPGA image file. This change is expected to bring little, if any, pain. The socfpga and zynq drivers are fixed up in this patch. An FPGA image file will have particulars that affect how the image is programmed to the FPGA. One example is that current 'flags' currently has one bit which shows whether the FPGA image was built for full reconfiguration or partial reconfiguration. Another example is timeout values for enabling or disabling the bridges in the FPGA. As the complexity of the FPGA design increases, the bridges in the FPGA may take longer times to enable or disable. This patch adds a new 'struct fpga_image_info', moves the current 'u32 flags' to it. Two other image-specific u32's are added for the bridge enable/disable timeouts. The FPGA Manager API functions are changed, replacing the 'u32 flag' parameter with a pointer to struct fpga_image_info. Subsequent patches fix the existing low level FPGA manager drivers. Signed-off-by: Alan Tull <atull@opensource.altera.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
-rw-r--r--drivers/fpga/fpga-mgr.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index b690e65d55fe..79ce2eea44db 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -32,7 +32,7 @@ static struct class *fpga_mgr_class;
/**
* 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
*
@@ -44,8 +44,8 @@ static struct class *fpga_mgr_class;
*
* 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;
@@ -56,7 +56,7 @@ int fpga_mgr_buf_load(struct fpga_manager *mgr, u32 flags, const char *buf,
* ready to receive an FPGA image.
*/
mgr->state = FPGA_MGR_STATE_WRITE_INIT;
- ret = mgr->mops->write_init(mgr, flags, buf, count);
+ ret = mgr->mops->write_init(mgr, info, buf, count);
if (ret) {
dev_err(dev, "Error preparing FPGA for writing\n");
mgr->state = FPGA_MGR_STATE_WRITE_INIT_ERR;
@@ -79,7 +79,7 @@ int fpga_mgr_buf_load(struct fpga_manager *mgr, u32 flags, const char *buf,
* 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;
@@ -94,7 +94,7 @@ EXPORT_SYMBOL_GPL(fpga_mgr_buf_load);
/**
* 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.
@@ -105,7 +105,8 @@ EXPORT_SYMBOL_GPL(fpga_mgr_buf_load);
*
* 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;
@@ -123,7 +124,7 @@ int fpga_mgr_firmware_load(struct fpga_manager *mgr, u32 flags,
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);