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fpga: dfl: afu: convert platform_driver to use dev_groups 

This patch takes advantage of driver core which helps to create
and remove sysfs attribute files, so there is no need to register
sysfs entries manually in dfl-afu platform river code.

Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
This commit is contained in:
Wu Hao 2019-08-12 10:49:58 +08:00 committed by Moritz Fischer
parent 084c3ff1b1
commit a80a4b82e7
1 changed files with 38 additions and 35 deletions
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73
drivers/fpga/dfl-afu-main.c
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@ -282,24 +282,17 @@ static struct attribute *port_hdr_attrs[] = {
&dev_attr_power_state.attr,
NULL,
};
ATTRIBUTE_GROUPS(port_hdr);
static const struct attribute_group port_hdr_group = {
.attrs = port_hdr_attrs,
};
static int port_hdr_init(struct platform_device *pdev,
struct dfl_feature *feature)
{
dev_dbg(&pdev->dev, "PORT HDR Init.\n");
port_reset(pdev);
return device_add_groups(&pdev->dev, port_hdr_groups);
}
static void port_hdr_uinit(struct platform_device *pdev,
struct dfl_feature *feature)
{
dev_dbg(&pdev->dev, "PORT HDR UInit.\n");
device_remove_groups(&pdev->dev, port_hdr_groups);
return 0;
}
static long
@ -330,7 +323,6 @@ static const struct dfl_feature_id port_hdr_id_table[] = {
static const struct dfl_feature_ops port_hdr_ops = {
.init = port_hdr_init,
.uinit = port_hdr_uinit,
.ioctl = port_hdr_ioctl,
};
@ -361,32 +353,37 @@ static struct attribute *port_afu_attrs[] = {
&dev_attr_afu_id.attr,
NULL
};
ATTRIBUTE_GROUPS(port_afu);
static umode_t port_afu_attrs_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = kobj_to_dev(kobj);
/*
* sysfs entries are visible only if related private feature is
* enumerated.
*/
if (!dfl_get_feature_by_id(dev, PORT_FEATURE_ID_AFU))
return 0;
return attr->mode;
}
static const struct attribute_group port_afu_group = {
.attrs = port_afu_attrs,
.is_visible = port_afu_attrs_visible,
};
static int port_afu_init(struct platform_device *pdev,
struct dfl_feature *feature)
{
struct resource *res = &pdev->resource[feature->resource_index];
int ret;
dev_dbg(&pdev->dev, "PORT AFU Init.\n");
ret = afu_mmio_region_add(dev_get_platdata(&pdev->dev),
DFL_PORT_REGION_INDEX_AFU, resource_size(res),
res->start, DFL_PORT_REGION_READ |
DFL_PORT_REGION_WRITE | DFL_PORT_REGION_MMAP);
if (ret)
return ret;
return device_add_groups(&pdev->dev, port_afu_groups);
}
static void port_afu_uinit(struct platform_device *pdev,
struct dfl_feature *feature)
{
dev_dbg(&pdev->dev, "PORT AFU UInit.\n");
device_remove_groups(&pdev->dev, port_afu_groups);
return afu_mmio_region_add(dev_get_platdata(&pdev->dev),
DFL_PORT_REGION_INDEX_AFU,
resource_size(res), res->start,
DFL_PORT_REGION_MMAP | DFL_PORT_REGION_READ |
DFL_PORT_REGION_WRITE);
}
static const struct dfl_feature_id port_afu_id_table[] = {
@ -396,7 +393,6 @@ static const struct dfl_feature_id port_afu_id_table[] = {
static const struct dfl_feature_ops port_afu_ops = {
.init = port_afu_init,
.uinit = port_afu_uinit,
};
static struct dfl_feature_driver port_feature_drvs[] = {
@ -748,9 +744,16 @@ static int afu_remove(struct platform_device *pdev)
return 0;
}
static const struct attribute_group *afu_dev_groups[] = {
&port_hdr_group,
&port_afu_group,
NULL
};
static struct platform_driver afu_driver = {
.driver = {
.name = DFL_FPGA_FEATURE_DEV_PORT,
.name = DFL_FPGA_FEATURE_DEV_PORT,
.dev_groups = afu_dev_groups,
},
.probe = afu_probe,
.remove = afu_remove,