* [PATCH v4 2/4] fpga: manager: change api, don't use drvdata
2018-04-12 20:30 [PATCH v4 0/4] fpga: change api, don't use drive data Alan Tull
2018-04-12 20:30 ` [PATCH v4 1/4] fpga: region: don't use drvdata in common fpga code Alan Tull
@ 2018-04-12 20:30 ` Alan Tull
2018-04-12 20:30 ` [PATCH v4 3/4] fpga: bridge: " Alan Tull
2018-04-12 20:30 ` [PATCH v4 4/4] fpga: region: change api, add fpga_region_create/free Alan Tull
3 siblings, 0 replies; 5+ messages in thread
From: Alan Tull @ 2018-04-12 20:30 UTC (permalink / raw)
To: Moritz Fischer; +Cc: Alan Tull, linux-kernel, linux-fpga
Change fpga_mgr_register to not set or use drvdata. This supports
the case where a PCIe device has more than one manager.
Add fpga_mgr_create/free functions. Change fpga_mgr_register and
fpga_mgr_unregister functions to take the mgr struct as their only
parameter.
struct fpga_manager *fpga_mgr_create(struct device *dev,
const char *name,
const struct fpga_manager_ops *mops,
void *priv);
void fpga_mgr_free(struct fpga_manager *mgr);
int fpga_mgr_register(struct fpga_manager *mgr);
void fpga_mgr_unregister(struct fpga_manager *mgr);
Update the drivers that call fpga_mgr_register with the new API.
Signed-off-by: Alan Tull <atull@kernel.org>
Reported-by: Jiuyue Ma <majiuyue@huawei.com>
---
v2: change fpga_mgr_register to not need parent device param
v3: minor changes to make diffs smaller and more obviously correct
rebased to current next branch
v4: reworked, adding fpga_manager_create and _free functions
remove parent from struct
remove added check for parent.
clean up commit header
adjust documentation for the new API
add fixup for machxo2-spi.c
---
Documentation/fpga/fpga-mgr.txt | 35 +++++++++++++-----
drivers/fpga/altera-cvp.c | 19 +++++++---
drivers/fpga/altera-pr-ip-core.c | 18 ++++++++--
drivers/fpga/altera-ps-spi.c | 20 +++++++++--
drivers/fpga/fpga-mgr.c | 78 ++++++++++++++++++++++++++--------------
drivers/fpga/ice40-spi.c | 21 ++++++++---
drivers/fpga/machxo2-spi.c | 20 ++++++++---
drivers/fpga/socfpga-a10.c | 14 ++++++--
drivers/fpga/socfpga.c | 19 ++++++++--
drivers/fpga/ts73xx-fpga.c | 20 +++++++++--
drivers/fpga/xilinx-spi.c | 20 +++++++++--
drivers/fpga/zynq-fpga.c | 14 ++++++--
include/linux/fpga/fpga-mgr.h | 10 +++---
13 files changed, 237 insertions(+), 71 deletions(-)
diff --git a/Documentation/fpga/fpga-mgr.txt b/Documentation/fpga/fpga-mgr.txt
index cc6413e..1155612 100644
--- a/Documentation/fpga/fpga-mgr.txt
+++ b/Documentation/fpga/fpga-mgr.txt
@@ -63,17 +63,23 @@ The user should call fpga_mgr_lock and verify that it returns 0 before
attempting to program the FPGA. Likewise, the user should call
fpga_mgr_unlock when done programming the FPGA.
+To alloc/free a FPGA manager struct:
+------------------------------------
+
+ struct fpga_manager *fpga_mgr_create(struct device *dev,
+ const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv);
+ void fpga_mgr_free(struct fpga_manager *mgr);
To register or unregister the low level FPGA-specific driver:
-------------------------------------------------------------
- int fpga_mgr_register(struct device *dev, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv);
+ int fpga_mgr_register(struct fpga_manager *mgr);
- void fpga_mgr_unregister(struct device *dev);
+ void fpga_mgr_unregister(struct fpga_manager *mgr);
-Use of these two functions is described below in "How To Support a new FPGA
+Use of these functions is described below in "How To Support a new FPGA
device."
@@ -148,6 +154,7 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct socfpga_fpga_priv *priv;
+ struct fpga_manager *mgr;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -157,13 +164,25 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
/* ... do ioremaps, get interrupts, etc. and save
them in priv... */
- return fpga_mgr_register(dev, "Altera SOCFPGA FPGA Manager",
- &socfpga_fpga_ops, priv);
+ mgr = fpga_mgr_create(dev, "Altera SOCFPGA FPGA Manager",
+ &socfpga_fpga_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int socfpga_fpga_remove(struct platform_device *pdev)
{
- fpga_mgr_unregister(&pdev->dev);
+ struct fpga_manager *mgr = platform_get_drvdata(pdev);
+
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
index 77b04e4..dd4edd8 100644
--- a/drivers/fpga/altera-cvp.c
+++ b/drivers/fpga/altera-cvp.c
@@ -401,6 +401,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
const struct pci_device_id *dev_id)
{
struct altera_cvp_conf *conf;
+ struct fpga_manager *mgr;
u16 cmd, val;
int ret;
@@ -452,16 +453,24 @@ static int altera_cvp_probe(struct pci_dev *pdev,
snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s @%s",
ALTERA_CVP_MGR_NAME, pci_name(pdev));
- ret = fpga_mgr_register(&pdev->dev, conf->mgr_name,
- &altera_cvp_ops, conf);
- if (ret)
+ mgr = fpga_mgr_create(&pdev->dev, conf->mgr_name,
+ &altera_cvp_ops, conf);
+ if (!mgr)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret) {
+ fpga_mgr_free(mgr);
goto err_unmap;
+ }
ret = driver_create_file(&altera_cvp_driver.driver,
&driver_attr_chkcfg);
if (ret) {
dev_err(&pdev->dev, "Can't create sysfs chkcfg file\n");
- fpga_mgr_unregister(&pdev->dev);
+ fpga_mgr_unregister(mgr);
goto err_unmap;
}
@@ -483,7 +492,7 @@ static void altera_cvp_remove(struct pci_dev *pdev)
u16 cmd;
driver_remove_file(&altera_cvp_driver.driver, &driver_attr_chkcfg);
- fpga_mgr_unregister(&pdev->dev);
+ fpga_mgr_unregister(mgr);
pci_iounmap(pdev, conf->map);
pci_release_region(pdev, CVP_BAR);
pci_read_config_word(pdev, PCI_COMMAND, &cmd);
diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c
index a7b31f9..eea5217 100644
--- a/drivers/fpga/altera-pr-ip-core.c
+++ b/drivers/fpga/altera-pr-ip-core.c
@@ -187,6 +187,8 @@ static const struct fpga_manager_ops alt_pr_ops = {
int alt_pr_register(struct device *dev, void __iomem *reg_base)
{
struct alt_pr_priv *priv;
+ struct fpga_manager *mgr;
+ int ret;
u32 val;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -201,15 +203,27 @@ int alt_pr_register(struct device *dev, void __iomem *reg_base)
(val & ALT_PR_CSR_STATUS_MSK) >> ALT_PR_CSR_STATUS_SFT,
(int)(val & ALT_PR_CSR_PR_START));
- return fpga_mgr_register(dev, dev_name(dev), &alt_pr_ops, priv);
+ mgr = fpga_mgr_create(dev, dev_name(dev), &alt_pr_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(alt_pr_register);
int alt_pr_unregister(struct device *dev)
{
+ struct fpga_manager *mgr = dev_get_drvdata(dev);
+
dev_dbg(dev, "%s\n", __func__);
- fpga_mgr_unregister(dev);
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/altera-ps-spi.c b/drivers/fpga/altera-ps-spi.c
index 14f14ef..01753a0 100644
--- a/drivers/fpga/altera-ps-spi.c
+++ b/drivers/fpga/altera-ps-spi.c
@@ -238,6 +238,8 @@ static int altera_ps_probe(struct spi_device *spi)
{
struct altera_ps_conf *conf;
const struct of_device_id *of_id;
+ struct fpga_manager *mgr;
+ int ret;
conf = devm_kzalloc(&spi->dev, sizeof(*conf), GFP_KERNEL);
if (!conf)
@@ -273,13 +275,25 @@ static int altera_ps_probe(struct spi_device *spi)
snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s %s",
dev_driver_string(&spi->dev), dev_name(&spi->dev));
- return fpga_mgr_register(&spi->dev, conf->mgr_name,
- &altera_ps_ops, conf);
+ mgr = fpga_mgr_create(&spi->dev, conf->mgr_name,
+ &altera_ps_ops, conf);
+ if (!mgr)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int altera_ps_remove(struct spi_device *spi)
{
- fpga_mgr_unregister(&spi->dev);
+ struct fpga_manager *mgr = spi_get_drvdata(spi);
+
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index 9939d2c..0a5181d 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -515,17 +515,17 @@ void fpga_mgr_unlock(struct fpga_manager *mgr)
EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
/**
- * fpga_mgr_register - register a low level fpga manager driver
+ * fpga_mgr_create - create and initialize a FPGA manager struct
* @dev: fpga manager device from pdev
* @name: fpga manager name
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
*
- * Return: 0 on success, negative error code otherwise.
+ * Return: pointer to struct fpga_manager or NULL
*/
-int fpga_mgr_register(struct device *dev, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv)
+struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv)
{
struct fpga_manager *mgr;
int id, ret;
@@ -534,17 +534,17 @@ int fpga_mgr_register(struct device *dev, const char *name,
!mops->write_init || (!mops->write && !mops->write_sg) ||
(mops->write && mops->write_sg)) {
dev_err(dev, "Attempt to register without fpga_manager_ops\n");
- return -EINVAL;
+ return NULL;
}
if (!name || !strlen(name)) {
dev_err(dev, "Attempt to register with no name!\n");
- return -EINVAL;
+ return NULL;
}
mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
if (!mgr)
- return -ENOMEM;
+ return NULL;
id = ida_simple_get(&fpga_mgr_ida, 0, 0, GFP_KERNEL);
if (id < 0) {
@@ -558,25 +558,56 @@ int fpga_mgr_register(struct device *dev, const char *name,
mgr->mops = mops;
mgr->priv = priv;
- /*
- * Initialize framework state by requesting low level driver read state
- * from device. FPGA may be in reset mode or may have been programmed
- * by bootloader or EEPROM.
- */
- mgr->state = mgr->mops->state(mgr);
-
device_initialize(&mgr->dev);
mgr->dev.class = fpga_mgr_class;
mgr->dev.groups = mops->groups;
mgr->dev.parent = dev;
mgr->dev.of_node = dev->of_node;
mgr->dev.id = id;
- dev_set_drvdata(dev, mgr);
ret = dev_set_name(&mgr->dev, "fpga%d", id);
if (ret)
goto error_device;
+ return mgr;
+
+error_device:
+ ida_simple_remove(&fpga_mgr_ida, id);
+error_kfree:
+ kfree(mgr);
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(fpga_mgr_create);
+
+/**
+ * fpga_mgr_free - deallocate a FPGA manager
+ * @mgr: fpga manager struct created by fpga_mgr_create
+ */
+void fpga_mgr_free(struct fpga_manager *mgr)
+{
+ ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
+ kfree(mgr);
+}
+EXPORT_SYMBOL_GPL(fpga_mgr_free);
+
+/**
+ * fpga_mgr_register - register a FPGA manager
+ * @mgr: fpga manager struct created by fpga_mgr_create
+ *
+ * Return: 0 on success, negative error code otherwise.
+ */
+int fpga_mgr_register(struct fpga_manager *mgr)
+{
+ int ret;
+
+ /*
+ * Initialize framework state by requesting low level driver read state
+ * from device. FPGA may be in reset mode or may have been programmed
+ * by bootloader or EEPROM.
+ */
+ mgr->state = mgr->mops->state(mgr);
+
ret = device_add(&mgr->dev);
if (ret)
goto error_device;
@@ -586,22 +617,18 @@ int fpga_mgr_register(struct device *dev, const char *name,
return 0;
error_device:
- ida_simple_remove(&fpga_mgr_ida, id);
-error_kfree:
- kfree(mgr);
+ ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
return ret;
}
EXPORT_SYMBOL_GPL(fpga_mgr_register);
/**
- * fpga_mgr_unregister - unregister a low level fpga manager driver
- * @dev: fpga manager device from pdev
+ * fpga_mgr_unregister - unregister a FPGA manager
+ * @mgr: fpga manager struct
*/
-void fpga_mgr_unregister(struct device *dev)
+void fpga_mgr_unregister(struct fpga_manager *mgr)
{
- struct fpga_manager *mgr = dev_get_drvdata(dev);
-
dev_info(&mgr->dev, "%s %s\n", __func__, mgr->name);
/*
@@ -619,8 +646,7 @@ static void fpga_mgr_dev_release(struct device *dev)
{
struct fpga_manager *mgr = to_fpga_manager(dev);
- ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
- kfree(mgr);
+ fpga_mgr_free(mgr);
}
static int __init fpga_mgr_class_init(void)
diff --git a/drivers/fpga/ice40-spi.c b/drivers/fpga/ice40-spi.c
index 7fca820..5981c7e 100644
--- a/drivers/fpga/ice40-spi.c
+++ b/drivers/fpga/ice40-spi.c
@@ -133,6 +133,7 @@ static int ice40_fpga_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct ice40_fpga_priv *priv;
+ struct fpga_manager *mgr;
int ret;
priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL);
@@ -174,14 +175,26 @@ static int ice40_fpga_probe(struct spi_device *spi)
return ret;
}
- /* Register with the FPGA manager */
- return fpga_mgr_register(dev, "Lattice iCE40 FPGA Manager",
- &ice40_fpga_ops, priv);
+ mgr = fpga_mgr_create(dev, "Lattice iCE40 FPGA Manager",
+ &ice40_fpga_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int ice40_fpga_remove(struct spi_device *spi)
{
- fpga_mgr_unregister(&spi->dev);
+ struct fpga_manager *mgr = spi_get_drvdata(spi);
+
+ fpga_mgr_unregister(mgr);
+
return 0;
}
diff --git a/drivers/fpga/machxo2-spi.c b/drivers/fpga/machxo2-spi.c
index 8e95ec9..a582e00 100644
--- a/drivers/fpga/machxo2-spi.c
+++ b/drivers/fpga/machxo2-spi.c
@@ -355,21 +355,33 @@ static const struct fpga_manager_ops machxo2_ops = {
static int machxo2_spi_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
+ struct fpga_manager *mgr;
+ int ret;
if (spi->max_speed_hz > MACHXO2_MAX_SPEED) {
dev_err(dev, "Speed is too high\n");
return -EINVAL;
}
- return fpga_mgr_register(dev, "Lattice MachXO2 SPI FPGA Manager",
- &machxo2_ops, spi);
+ mgr = fpga_mgr_create(dev, "Lattice MachXO2 SPI FPGA Manager",
+ &machxo2_ops, spi);
+ if (!mgr)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int machxo2_spi_remove(struct spi_device *spi)
{
- struct device *dev = &spi->dev;
+ struct fpga_manager *mgr = spi_get_drvdata(spi);
- fpga_mgr_unregister(dev);
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/socfpga-a10.c b/drivers/fpga/socfpga-a10.c
index a46e343..dec3db5 100644
--- a/drivers/fpga/socfpga-a10.c
+++ b/drivers/fpga/socfpga-a10.c
@@ -482,6 +482,7 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct a10_fpga_priv *priv;
void __iomem *reg_base;
+ struct fpga_manager *mgr;
struct resource *res;
int ret;
@@ -519,9 +520,16 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
return -EBUSY;
}
- ret = fpga_mgr_register(dev, "SoCFPGA Arria10 FPGA Manager",
- &socfpga_a10_fpga_mgr_ops, priv);
+ mgr = fpga_mgr_create(dev, "SoCFPGA Arria10 FPGA Manager",
+ &socfpga_a10_fpga_mgr_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mgr);
+
+ ret = fpga_mgr_register(mgr);
if (ret) {
+ fpga_mgr_free(mgr);
clk_disable_unprepare(priv->clk);
return ret;
}
@@ -534,7 +542,7 @@ static int socfpga_a10_fpga_remove(struct platform_device *pdev)
struct fpga_manager *mgr = platform_get_drvdata(pdev);
struct a10_fpga_priv *priv = mgr->priv;
- fpga_mgr_unregister(&pdev->dev);
+ fpga_mgr_unregister(mgr);
clk_disable_unprepare(priv->clk);
return 0;
diff --git a/drivers/fpga/socfpga.c b/drivers/fpga/socfpga.c
index b6672e6..51efaf9 100644
--- a/drivers/fpga/socfpga.c
+++ b/drivers/fpga/socfpga.c
@@ -555,6 +555,7 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct socfpga_fpga_priv *priv;
+ struct fpga_manager *mgr;
struct resource *res;
int ret;
@@ -581,13 +582,25 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
if (ret)
return ret;
- return fpga_mgr_register(dev, "Altera SOCFPGA FPGA Manager",
- &socfpga_fpga_ops, priv);
+ mgr = fpga_mgr_create(dev, "Altera SOCFPGA FPGA Manager",
+ &socfpga_fpga_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int socfpga_fpga_remove(struct platform_device *pdev)
{
- fpga_mgr_unregister(&pdev->dev);
+ struct fpga_manager *mgr = platform_get_drvdata(pdev);
+
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/ts73xx-fpga.c b/drivers/fpga/ts73xx-fpga.c
index f6a96b4..08efd18 100644
--- a/drivers/fpga/ts73xx-fpga.c
+++ b/drivers/fpga/ts73xx-fpga.c
@@ -116,7 +116,9 @@ static int ts73xx_fpga_probe(struct platform_device *pdev)
{
struct device *kdev = &pdev->dev;
struct ts73xx_fpga_priv *priv;
+ struct fpga_manager *mgr;
struct resource *res;
+ int ret;
priv = devm_kzalloc(kdev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -131,13 +133,25 @@ static int ts73xx_fpga_probe(struct platform_device *pdev)
return PTR_ERR(priv->io_base);
}
- return fpga_mgr_register(kdev, "TS-73xx FPGA Manager",
- &ts73xx_fpga_ops, priv);
+ mgr = fpga_mgr_create(kdev, "TS-73xx FPGA Manager",
+ &ts73xx_fpga_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int ts73xx_fpga_remove(struct platform_device *pdev)
{
- fpga_mgr_unregister(&pdev->dev);
+ struct fpga_manager *mgr = platform_get_drvdata(pdev);
+
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/xilinx-spi.c b/drivers/fpga/xilinx-spi.c
index 9b62a4c..8d19459 100644
--- a/drivers/fpga/xilinx-spi.c
+++ b/drivers/fpga/xilinx-spi.c
@@ -143,6 +143,8 @@ static const struct fpga_manager_ops xilinx_spi_ops = {
static int xilinx_spi_probe(struct spi_device *spi)
{
struct xilinx_spi_conf *conf;
+ struct fpga_manager *mgr;
+ int ret;
conf = devm_kzalloc(&spi->dev, sizeof(*conf), GFP_KERNEL);
if (!conf)
@@ -165,13 +167,25 @@ static int xilinx_spi_probe(struct spi_device *spi)
return PTR_ERR(conf->done);
}
- return fpga_mgr_register(&spi->dev, "Xilinx Slave Serial FPGA Manager",
- &xilinx_spi_ops, conf);
+ mgr = fpga_mgr_create(&spi->dev, "Xilinx Slave Serial FPGA Manager",
+ &xilinx_spi_ops, conf);
+ if (!mgr)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, mgr);
+
+ ret = fpga_mgr_register(mgr);
+ if (ret)
+ fpga_mgr_free(mgr);
+
+ return ret;
}
static int xilinx_spi_remove(struct spi_device *spi)
{
- fpga_mgr_unregister(&spi->dev);
+ struct fpga_manager *mgr = spi_get_drvdata(spi);
+
+ fpga_mgr_unregister(mgr);
return 0;
}
diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
index 70b15b3..3110e00 100644
--- a/drivers/fpga/zynq-fpga.c
+++ b/drivers/fpga/zynq-fpga.c
@@ -558,6 +558,7 @@ static int zynq_fpga_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct zynq_fpga_priv *priv;
+ struct fpga_manager *mgr;
struct resource *res;
int err;
@@ -613,10 +614,17 @@ static int zynq_fpga_probe(struct platform_device *pdev)
clk_disable(priv->clk);
- err = fpga_mgr_register(dev, "Xilinx Zynq FPGA Manager",
- &zynq_fpga_ops, priv);
+ mgr = fpga_mgr_create(dev, "Xilinx Zynq FPGA Manager",
+ &zynq_fpga_ops, priv);
+ if (!mgr)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mgr);
+
+ err = fpga_mgr_register(mgr);
if (err) {
dev_err(dev, "unable to register FPGA manager\n");
+ fpga_mgr_free(mgr);
clk_unprepare(priv->clk);
return err;
}
@@ -632,7 +640,7 @@ static int zynq_fpga_remove(struct platform_device *pdev)
mgr = platform_get_drvdata(pdev);
priv = mgr->priv;
- fpga_mgr_unregister(&pdev->dev);
+ fpga_mgr_unregister(mgr);
clk_unprepare(priv->clk);
diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
index 3c6de23..1266c11 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h
@@ -170,9 +170,11 @@ struct fpga_manager *fpga_mgr_get(struct device *dev);
void fpga_mgr_put(struct fpga_manager *mgr);
-int fpga_mgr_register(struct device *dev, const char *name,
- const struct fpga_manager_ops *mops, void *priv);
-
-void fpga_mgr_unregister(struct device *dev);
+struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv);
+void fpga_mgr_free(struct fpga_manager *mgr);
+int fpga_mgr_register(struct fpga_manager *mgr);
+void fpga_mgr_unregister(struct fpga_manager *mgr);
#endif /*_LINUX_FPGA_MGR_H */
--
2.7.4
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH v4 3/4] fpga: bridge: change api, don't use drvdata
2018-04-12 20:30 [PATCH v4 0/4] fpga: change api, don't use drive data Alan Tull
2018-04-12 20:30 ` [PATCH v4 1/4] fpga: region: don't use drvdata in common fpga code Alan Tull
2018-04-12 20:30 ` [PATCH v4 2/4] fpga: manager: change api, don't use drvdata Alan Tull
@ 2018-04-12 20:30 ` Alan Tull
2018-04-12 20:30 ` [PATCH v4 4/4] fpga: region: change api, add fpga_region_create/free Alan Tull
3 siblings, 0 replies; 5+ messages in thread
From: Alan Tull @ 2018-04-12 20:30 UTC (permalink / raw)
To: Moritz Fischer; +Cc: Alan Tull, linux-kernel, linux-fpga
Change fpga_bridge_register to not set drvdata. This is to support
the case where a PCIe device can have more than one bridge.
Add API functions to create/free the fpga bridge struct. Change
fpga_bridge_register/unregister to take FPGA bridge struct as
the only parameter.
struct fpga_bridge
*fpga_bridge_create(struct device *dev, const char *name,
const struct fpga_bridge_ops *br_ops,
void *priv);
void fpga_bridge_free(struct fpga_bridge *br);
int fpga_bridge_register(struct fpga_bridge *br);
void fpga_bridge_unregister(struct fpga_bridge *br);
Update the drivers that call fpga_bridge_register with the new API.
Signed-off-by: Alan Tull <atull@kernel.org>
Reported-by: Jiuyue Ma <majiuyue@huawei.com>
---
v2: change fpga_bridge_register to not need parent device param
fix undeclared - s/dev/&pdev->dev/
v3: minor changes to make diffs smaller and more obviously correct
v4: rework API, add fpga_bridge_create/free
---
drivers/fpga/altera-fpga2sdram.c | 21 ++++++++---
drivers/fpga/altera-freeze-bridge.c | 22 ++++++++++--
drivers/fpga/altera-hps2fpga.c | 24 ++++++++++---
drivers/fpga/fpga-bridge.c | 70 ++++++++++++++++++++++++-------------
drivers/fpga/xilinx-pr-decoupler.c | 22 +++++++++---
include/linux/fpga/fpga-bridge.h | 9 +++--
6 files changed, 123 insertions(+), 45 deletions(-)
diff --git a/drivers/fpga/altera-fpga2sdram.c b/drivers/fpga/altera-fpga2sdram.c
index d4eeb74..5a29ab6 100644
--- a/drivers/fpga/altera-fpga2sdram.c
+++ b/drivers/fpga/altera-fpga2sdram.c
@@ -106,6 +106,7 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct alt_fpga2sdram_data *priv;
+ struct fpga_bridge *br;
u32 enable;
struct regmap *sysmgr;
int ret = 0;
@@ -131,10 +132,18 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
/* Get f2s bridge configuration saved in handoff register */
regmap_read(sysmgr, SYSMGR_ISWGRP_HANDOFF3, &priv->mask);
- ret = fpga_bridge_register(dev, F2S_BRIDGE_NAME,
- &altera_fpga2sdram_br_ops, priv);
- if (ret)
+ br = fpga_bridge_create(dev, F2S_BRIDGE_NAME,
+ &altera_fpga2sdram_br_ops, priv);
+ if (!br)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, br);
+
+ ret = fpga_bridge_register(br);
+ if (ret) {
+ fpga_bridge_free(br);
return ret;
+ }
dev_info(dev, "driver initialized with handoff %08x\n", priv->mask);
@@ -146,7 +155,7 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
(enable ? "enabling" : "disabling"));
ret = _alt_fpga2sdram_enable_set(priv, enable);
if (ret) {
- fpga_bridge_unregister(&pdev->dev);
+ fpga_bridge_unregister(br);
return ret;
}
}
@@ -157,7 +166,9 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
static int alt_fpga_bridge_remove(struct platform_device *pdev)
{
- fpga_bridge_unregister(&pdev->dev);
+ struct fpga_bridge *br = platform_get_drvdata(pdev);
+
+ fpga_bridge_unregister(br);
return 0;
}
diff --git a/drivers/fpga/altera-freeze-bridge.c b/drivers/fpga/altera-freeze-bridge.c
index 6159cfcf..fa4b693 100644
--- a/drivers/fpga/altera-freeze-bridge.c
+++ b/drivers/fpga/altera-freeze-bridge.c
@@ -221,8 +221,10 @@ static int altera_freeze_br_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
void __iomem *base_addr;
struct altera_freeze_br_data *priv;
+ struct fpga_bridge *br;
struct resource *res;
u32 status, revision;
+ int ret;
if (!np)
return -ENODEV;
@@ -254,13 +256,27 @@ static int altera_freeze_br_probe(struct platform_device *pdev)
priv->base_addr = base_addr;
- return fpga_bridge_register(dev, FREEZE_BRIDGE_NAME,
- &altera_freeze_br_br_ops, priv);
+ br = fpga_bridge_create(dev, FREEZE_BRIDGE_NAME,
+ &altera_freeze_br_br_ops, priv);
+ if (!br)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, br);
+
+ ret = fpga_bridge_register(br);
+ if (ret) {
+ fpga_bridge_free(br);
+ return ret;
+ }
+
+ return 0;
}
static int altera_freeze_br_remove(struct platform_device *pdev)
{
- fpga_bridge_unregister(&pdev->dev);
+ struct fpga_bridge *br = platform_get_drvdata(pdev);
+
+ fpga_bridge_unregister(br);
return 0;
}
diff --git a/drivers/fpga/altera-hps2fpga.c b/drivers/fpga/altera-hps2fpga.c
index 406d2f1..e4d39f0 100644
--- a/drivers/fpga/altera-hps2fpga.c
+++ b/drivers/fpga/altera-hps2fpga.c
@@ -139,6 +139,7 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct altera_hps2fpga_data *priv;
const struct of_device_id *of_id;
+ struct fpga_bridge *br;
u32 enable;
int ret;
@@ -190,11 +191,24 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
}
}
- ret = fpga_bridge_register(dev, priv->name, &altera_hps2fpga_br_ops,
- priv);
-err:
+ br = fpga_bridge_create(dev, priv->name, &altera_hps2fpga_br_ops, priv);
+ if (!br) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, br);
+
+ ret = fpga_bridge_register(br);
if (ret)
- clk_disable_unprepare(priv->clk);
+ goto err_free;
+
+ return 0;
+
+err_free:
+ fpga_bridge_free(br);
+err:
+ clk_disable_unprepare(priv->clk);
return ret;
}
@@ -204,7 +218,7 @@ static int alt_fpga_bridge_remove(struct platform_device *pdev)
struct fpga_bridge *bridge = platform_get_drvdata(pdev);
struct altera_hps2fpga_data *priv = bridge->priv;
- fpga_bridge_unregister(&pdev->dev);
+ fpga_bridge_unregister(bridge);
clk_disable_unprepare(priv->clk);
diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
index 31bd2c5..2db1573 100644
--- a/drivers/fpga/fpga-bridge.c
+++ b/drivers/fpga/fpga-bridge.c
@@ -328,28 +328,29 @@ static struct attribute *fpga_bridge_attrs[] = {
ATTRIBUTE_GROUPS(fpga_bridge);
/**
- * fpga_bridge_register - register a fpga bridge driver
+ * fpga_bridge_create - create and initialize a struct fpga_bridge
* @dev: FPGA bridge device from pdev
* @name: FPGA bridge name
* @br_ops: pointer to structure of fpga bridge ops
* @priv: FPGA bridge private data
*
- * Return: 0 for success, error code otherwise.
+ * Return: struct fpga_bridge or NULL
*/
-int fpga_bridge_register(struct device *dev, const char *name,
- const struct fpga_bridge_ops *br_ops, void *priv)
+struct fpga_bridge *fpga_bridge_create(struct device *dev, const char *name,
+ const struct fpga_bridge_ops *br_ops,
+ void *priv)
{
struct fpga_bridge *bridge;
int id, ret = 0;
if (!name || !strlen(name)) {
dev_err(dev, "Attempt to register with no name!\n");
- return -EINVAL;
+ return NULL;
}
bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
if (!bridge)
- return -ENOMEM;
+ return NULL;
id = ida_simple_get(&fpga_bridge_ida, 0, 0, GFP_KERNEL);
if (id < 0) {
@@ -370,40 +371,62 @@ int fpga_bridge_register(struct device *dev, const char *name,
bridge->dev.parent = dev;
bridge->dev.of_node = dev->of_node;
bridge->dev.id = id;
- dev_set_drvdata(dev, bridge);
ret = dev_set_name(&bridge->dev, "br%d", id);
if (ret)
goto error_device;
- ret = device_add(&bridge->dev);
- if (ret)
- goto error_device;
-
- of_platform_populate(dev->of_node, NULL, NULL, dev);
-
- dev_info(bridge->dev.parent, "fpga bridge [%s] registered\n",
- bridge->name);
-
- return 0;
+ return bridge;
error_device:
ida_simple_remove(&fpga_bridge_ida, id);
error_kfree:
kfree(bridge);
- return ret;
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(fpga_bridge_create);
+
+/**
+ * fpga_bridge_free - free a fpga bridge and its id
+ * @bridge: FPGA bridge struct created by fpga_bridge_create
+ */
+void fpga_bridge_free(struct fpga_bridge *bridge)
+{
+ ida_simple_remove(&fpga_bridge_ida, bridge->dev.id);
+ kfree(bridge);
+}
+EXPORT_SYMBOL_GPL(fpga_bridge_free);
+
+/**
+ * fpga_bridge_register - register a fpga bridge
+ * @bridge: FPGA bridge struct created by fpga_bridge_create
+ *
+ * Return: 0 for success, error code otherwise.
+ */
+int fpga_bridge_register(struct fpga_bridge *bridge)
+{
+ struct device *dev = &bridge->dev;
+ int ret;
+
+ ret = device_add(dev);
+ if (ret)
+ return ret;
+
+ of_platform_populate(dev->of_node, NULL, NULL, dev);
+
+ dev_info(dev->parent, "fpga bridge [%s] registered\n", bridge->name);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(fpga_bridge_register);
/**
* fpga_bridge_unregister - unregister a fpga bridge driver
- * @dev: FPGA bridge device from pdev
+ * @bridge: FPGA bridge struct created by fpga_bridge_create
*/
-void fpga_bridge_unregister(struct device *dev)
+void fpga_bridge_unregister(struct fpga_bridge *bridge)
{
- struct fpga_bridge *bridge = dev_get_drvdata(dev);
-
/*
* If the low level driver provides a method for putting bridge into
* a desired state upon unregister, do it.
@@ -419,8 +442,7 @@ static void fpga_bridge_dev_release(struct device *dev)
{
struct fpga_bridge *bridge = to_fpga_bridge(dev);
- ida_simple_remove(&fpga_bridge_ida, bridge->dev.id);
- kfree(bridge);
+ fpga_bridge_free(bridge);
}
static int __init fpga_bridge_dev_init(void)
diff --git a/drivers/fpga/xilinx-pr-decoupler.c b/drivers/fpga/xilinx-pr-decoupler.c
index 0d77430..07ba153 100644
--- a/drivers/fpga/xilinx-pr-decoupler.c
+++ b/drivers/fpga/xilinx-pr-decoupler.c
@@ -94,6 +94,7 @@ MODULE_DEVICE_TABLE(of, xlnx_pr_decoupler_of_match);
static int xlnx_pr_decoupler_probe(struct platform_device *pdev)
{
struct xlnx_pr_decoupler_data *priv;
+ struct fpga_bridge *br;
int err;
struct resource *res;
@@ -120,16 +121,27 @@ static int xlnx_pr_decoupler_probe(struct platform_device *pdev)
clk_disable(priv->clk);
- err = fpga_bridge_register(&pdev->dev, "Xilinx PR Decoupler",
- &xlnx_pr_decoupler_br_ops, priv);
+ br = fpga_bridge_create(&pdev->dev, "Xilinx PR Decoupler",
+ &xlnx_pr_decoupler_br_ops, priv);
+ if (!br) {
+ err = -ENOMEM;
+ goto err_clk;
+ }
+
+ platform_set_drvdata(pdev, br);
+ err = fpga_bridge_register(br);
if (err) {
dev_err(&pdev->dev, "unable to register Xilinx PR Decoupler");
- clk_unprepare(priv->clk);
- return err;
+ goto err_clk;
}
return 0;
+
+err_clk:
+ clk_unprepare(priv->clk);
+
+ return err;
}
static int xlnx_pr_decoupler_remove(struct platform_device *pdev)
@@ -137,7 +149,7 @@ static int xlnx_pr_decoupler_remove(struct platform_device *pdev)
struct fpga_bridge *bridge = platform_get_drvdata(pdev);
struct xlnx_pr_decoupler_data *p = bridge->priv;
- fpga_bridge_unregister(&pdev->dev);
+ fpga_bridge_unregister(bridge);
clk_unprepare(p->clk);
diff --git a/include/linux/fpga/fpga-bridge.h b/include/linux/fpga/fpga-bridge.h
index 3694821..ce550fc 100644
--- a/include/linux/fpga/fpga-bridge.h
+++ b/include/linux/fpga/fpga-bridge.h
@@ -62,8 +62,11 @@ int of_fpga_bridge_get_to_list(struct device_node *np,
struct fpga_image_info *info,
struct list_head *bridge_list);
-int fpga_bridge_register(struct device *dev, const char *name,
- const struct fpga_bridge_ops *br_ops, void *priv);
-void fpga_bridge_unregister(struct device *dev);
+struct fpga_bridge *fpga_bridge_create(struct device *dev, const char *name,
+ const struct fpga_bridge_ops *br_ops,
+ void *priv);
+void fpga_bridge_free(struct fpga_bridge *br);
+int fpga_bridge_register(struct fpga_bridge *br);
+void fpga_bridge_unregister(struct fpga_bridge *br);
#endif /* _LINUX_FPGA_BRIDGE_H */
--
2.7.4
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH v4 4/4] fpga: region: change api, add fpga_region_create/free
2018-04-12 20:30 [PATCH v4 0/4] fpga: change api, don't use drive data Alan Tull
` (2 preceding siblings ...)
2018-04-12 20:30 ` [PATCH v4 3/4] fpga: bridge: " Alan Tull
@ 2018-04-12 20:30 ` Alan Tull
3 siblings, 0 replies; 5+ messages in thread
From: Alan Tull @ 2018-04-12 20:30 UTC (permalink / raw)
To: Moritz Fischer; +Cc: Alan Tull, linux-kernel, linux-fpga
Add fpga_region_create/free API functions.
Change fpga_region_register to take FPGA region struct as the only
parameter. Change fpga_region_unregister to return void.
struct fpga_region *fpga_region_create(struct device *dev,
struct fpga_manager *mgr,
int (*get_bridges)(struct fpga_region *));
void fpga_region_free(struct fpga_region *region);
int fpga_region_register(struct fpga_region *region);
void fpga_region_unregister(struct fpga_region *region);
Remove groups storage from struct fpga_region, it's not
needed. Callers can just "region->dev.groups = groups;"
after calling fpga_region_create.
Update the drivers that call fpga_region_register with the new API.
Signed-off-by: Alan Tull <atull@kernel.org>
---
v2: This patch added in this version of the patchset
v3: minor changes to make diffs smaller and more obviously correct
v4: reworked for different API
remove groups from struct fpga_region
---
Documentation/fpga/fpga-region.txt | 3 +-
drivers/fpga/fpga-region.c | 68 ++++++++++++++++++++++++++++++--------
drivers/fpga/of-fpga-region.c | 13 +++-----
include/linux/fpga/fpga-region.h | 11 +++---
4 files changed, 68 insertions(+), 27 deletions(-)
diff --git a/Documentation/fpga/fpga-region.txt b/Documentation/fpga/fpga-region.txt
index 139a02b..d38fa3b 100644
--- a/Documentation/fpga/fpga-region.txt
+++ b/Documentation/fpga/fpga-region.txt
@@ -42,8 +42,7 @@ The FPGA region API
To register or unregister a region:
-----------------------------------
- int fpga_region_register(struct device *dev,
- struct fpga_region *region);
+ int fpga_region_register(struct fpga_region *region);
int fpga_region_unregister(struct fpga_region *region);
An example of usage can be seen in the probe function of [3]
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
index ebe1f87..d6a9dd2 100644
--- a/drivers/fpga/fpga-region.c
+++ b/drivers/fpga/fpga-region.c
@@ -162,18 +162,36 @@ int fpga_region_program_fpga(struct fpga_region *region)
}
EXPORT_SYMBOL_GPL(fpga_region_program_fpga);
-int fpga_region_register(struct device *dev, struct fpga_region *region)
+/**
+ * fpga_region_create - alloc and init a struct fpga_region
+ * @dev: device parent
+ * @mgr: manager that programs this region
+ * @get_bridges: optional function to get bridges to a list
+ *
+ * Return: struct fpga_region or NULL
+ */
+struct fpga_region
+*fpga_region_create(struct device *dev,
+ struct fpga_manager *mgr,
+ int (*get_bridges)(struct fpga_region *))
{
+ struct fpga_region *region;
int id, ret = 0;
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region)
+ return NULL;
+
id = ida_simple_get(&fpga_region_ida, 0, 0, GFP_KERNEL);
if (id < 0)
- return id;
+ goto err_free;
+ region->mgr = mgr;
+ region->get_bridges = get_bridges;
mutex_init(®ion->mutex);
INIT_LIST_HEAD(®ion->bridge_list);
+
device_initialize(®ion->dev);
- region->dev.groups = region->groups;
region->dev.class = fpga_region_class;
region->dev.parent = dev;
region->dev.of_node = dev->of_node;
@@ -183,23 +201,47 @@ int fpga_region_register(struct device *dev, struct fpga_region *region)
if (ret)
goto err_remove;
- ret = device_add(®ion->dev);
- if (ret)
- goto err_remove;
-
- return 0;
+ return region;
err_remove:
ida_simple_remove(&fpga_region_ida, id);
- return ret;
+err_free:
+ kfree(region);
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(fpga_region_create);
+
+/**
+ * fpga_region_free - free a struct fpga_region
+ * @region: FPGA region created by fpga_region_create
+ */
+void fpga_region_free(struct fpga_region *region)
+{
+ ida_simple_remove(&fpga_region_ida, region->dev.id);
+ kfree(region);
+}
+EXPORT_SYMBOL_GPL(fpga_region_free);
+
+/*
+ * fpga_region_register - register a FPGA region
+ * @region: FPGA region created by fpga_region_create
+ * Return: 0 or -errno
+ */
+int fpga_region_register(struct fpga_region *region)
+{
+ return device_add(®ion->dev);
+
}
EXPORT_SYMBOL_GPL(fpga_region_register);
-int fpga_region_unregister(struct fpga_region *region)
+/*
+ * fpga_region_unregister - unregister a FPGA region
+ * @region: FPGA region
+ */
+void fpga_region_unregister(struct fpga_region *region)
{
device_unregister(®ion->dev);
-
- return 0;
}
EXPORT_SYMBOL_GPL(fpga_region_unregister);
@@ -207,7 +249,7 @@ static void fpga_region_dev_release(struct device *dev)
{
struct fpga_region *region = to_fpga_region(dev);
- ida_simple_remove(&fpga_region_ida, region->dev.id);
+ fpga_region_free(region);
}
/**
diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index 35e7e8c..9d681a1 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -422,20 +422,15 @@ static int of_fpga_region_probe(struct platform_device *pdev)
if (IS_ERR(mgr))
return -EPROBE_DEFER;
- region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL);
+ region = fpga_region_create(dev, mgr, of_fpga_region_get_bridges);
if (!region) {
ret = -ENOMEM;
goto eprobe_mgr_put;
}
- region->mgr = mgr;
-
- /* Specify how to get bridges for this type of region. */
- region->get_bridges = of_fpga_region_get_bridges;
-
- ret = fpga_region_register(dev, region);
+ ret = fpga_region_register(region);
if (ret)
- goto eprobe_mgr_put;
+ goto eprobe_free;
of_platform_populate(np, fpga_region_of_match, NULL, ®ion->dev);
dev_set_drvdata(dev, region);
@@ -444,6 +439,8 @@ static int of_fpga_region_probe(struct platform_device *pdev)
return 0;
+eprobe_free:
+ fpga_region_free(region);
eprobe_mgr_put:
fpga_mgr_put(mgr);
return ret;
diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
index b652031..f2e215b 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -14,7 +14,6 @@
* @info: FPGA image info
* @priv: private data
* @get_bridges: optional function to get bridges to a list
- * @groups: optional attribute groups.
*/
struct fpga_region {
struct device dev;
@@ -24,7 +23,6 @@ struct fpga_region {
struct fpga_image_info *info;
void *priv;
int (*get_bridges)(struct fpga_region *region);
- const struct attribute_group **groups;
};
#define to_fpga_region(d) container_of(d, struct fpga_region, dev)
@@ -34,7 +32,12 @@ struct fpga_region *fpga_region_class_find(
int (*match)(struct device *, const void *));
int fpga_region_program_fpga(struct fpga_region *region);
-int fpga_region_register(struct device *dev, struct fpga_region *region);
-int fpga_region_unregister(struct fpga_region *region);
+
+struct fpga_region
+*fpga_region_create(struct device *dev, struct fpga_manager *mgr,
+ int (*get_bridges)(struct fpga_region *));
+void fpga_region_free(struct fpga_region *region);
+int fpga_region_register(struct fpga_region *region);
+void fpga_region_unregister(struct fpga_region *region);
#endif /* _FPGA_REGION_H */
--
2.7.4
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