[RFC PATCH v2 4/9] fpga: dfl: migrate FPGA Management Engine driver to dfl_feature_dev_data

[Peter Colberg <peter.colberg@intel.com>]

This change separates out most of the symbol name changes required by this
patch series for the file: drivers/fpga/dfl-fme-main.c. This is done to
split a single monolithic change into multiple, smaller patches at the
request of the maintainer.

Signed-off-by: Peter Colberg <peter.colberg@intel.com>
---
v2:
- Split monolithic patch into series at request of maintainer
- Change fme_hdr_ioctl_*() to receive dfl_feature_dev_data instead of
  dfl_feature_platform_data.
- Remove unused local variable pdata in fme_dev_{init,destroy}().
---
 drivers/fpga/dfl-fme-main.c | 68 ++++++++++++++++++++-----------------
 1 file changed, 36 insertions(+), 32 deletions(-)

diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c
index 864924f68f5e..7f119b09b54e 100644
--- a/drivers/fpga/dfl-fme-main.c
+++ b/drivers/fpga/dfl-fme-main.c
@@ -135,10 +135,10 @@ static const struct attribute_group fme_hdr_group = {
 	.attrs = fme_hdr_attrs,
 };
 
-static long fme_hdr_ioctl_release_port(struct dfl_feature_platform_data *pdata,
+static long fme_hdr_ioctl_release_port(struct dfl_feature_dev_data *fdata,
 				       unsigned long arg)
 {
-	struct dfl_fpga_cdev *cdev = pdata->dfl_cdev;
+	struct dfl_fpga_cdev *cdev = fdata->dfl_cdev;
 	int port_id;
 
 	if (get_user(port_id, (int __user *)arg))
@@ -147,10 +147,10 @@ static long fme_hdr_ioctl_release_port(struct dfl_feature_platform_data *pdata,
 	return dfl_fpga_cdev_release_port(cdev, port_id);
 }
 
-static long fme_hdr_ioctl_assign_port(struct dfl_feature_platform_data *pdata,
+static long fme_hdr_ioctl_assign_port(struct dfl_feature_dev_data *fdata,
 				      unsigned long arg)
 {
-	struct dfl_fpga_cdev *cdev = pdata->dfl_cdev;
+	struct dfl_fpga_cdev *cdev = fdata->dfl_cdev;
 	int port_id;
 
 	if (get_user(port_id, (int __user *)arg))
@@ -163,13 +163,13 @@ static long fme_hdr_ioctl(struct platform_device *pdev,
 			  struct dfl_feature *feature,
 			  unsigned int cmd, unsigned long arg)
 {
-	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);
 
 	switch (cmd) {
 	case DFL_FPGA_FME_PORT_RELEASE:
-		return fme_hdr_ioctl_release_port(pdata, arg);
+		return fme_hdr_ioctl_release_port(fdata, arg);
 	case DFL_FPGA_FME_PORT_ASSIGN:
-		return fme_hdr_ioctl_assign_port(pdata, arg);
+		return fme_hdr_ioctl_assign_port(fdata, arg);
 	}
 
 	return -ENODEV;
@@ -411,14 +411,14 @@ static int power_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 static int power_hwmon_write(struct device *dev, enum hwmon_sensor_types type,
 			     u32 attr, int channel, long val)
 {
-	struct dfl_feature_platform_data *pdata = dev_get_platdata(dev->parent);
+	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(dev);
 	struct dfl_feature *feature = dev_get_drvdata(dev);
 	int ret = 0;
 	u64 v;
 
 	val = clamp_val(val / MICRO, 0, PWR_THRESHOLD_MAX);
 
-	mutex_lock(&pdata->lock);
+	mutex_lock(&fdata->lock);
 
 	switch (attr) {
 	case hwmon_power_max:
@@ -438,7 +438,7 @@ static int power_hwmon_write(struct device *dev, enum hwmon_sensor_types type,
 		break;
 	}
 
-	mutex_unlock(&pdata->lock);
+	mutex_unlock(&fdata->lock);
 
 	return ret;
 }
@@ -589,7 +589,7 @@ static struct dfl_feature_driver fme_feature_drvs[] = {
 	},
 };
 
-static long fme_ioctl_check_extension(struct dfl_feature_platform_data *pdata,
+static long fme_ioctl_check_extension(struct dfl_feature_dev_data *fdata,
 				      unsigned long arg)
 {
 	/* No extension support for now */
@@ -600,19 +600,21 @@ static int fme_open(struct inode *inode, struct file *filp)
 {
 	struct platform_device *fdev = dfl_fpga_inode_to_feature_dev(inode);
 	struct dfl_feature_platform_data *pdata = dev_get_platdata(&fdev->dev);
+	struct dfl_feature_dev_data *fdata;
 	int ret;
 
 	if (WARN_ON(!pdata))
 		return -ENODEV;
 
-	mutex_lock(&pdata->lock);
-	ret = dfl_feature_dev_use_begin(pdata, filp->f_flags & O_EXCL);
+	fdata = pdata;
+	mutex_lock(&fdata->lock);
+	ret = dfl_feature_dev_use_begin(fdata, filp->f_flags & O_EXCL);
 	if (!ret) {
 		dev_dbg(&fdev->dev, "Device File Opened %d Times\n",
-			dfl_feature_dev_use_count(pdata));
+			dfl_feature_dev_use_count(fdata));
 		filp->private_data = pdata;
 	}
-	mutex_unlock(&pdata->lock);
+	mutex_unlock(&fdata->lock);
 
 	return ret;
 }
@@ -620,19 +622,20 @@ static int fme_open(struct inode *inode, struct file *filp)
 static int fme_release(struct inode *inode, struct file *filp)
 {
 	struct dfl_feature_platform_data *pdata = filp->private_data;
-	struct platform_device *pdev = pdata->dev;
+	struct dfl_feature_dev_data *fdata = pdata;
+	struct platform_device *pdev = fdata->dev;
 	struct dfl_feature *feature;
 
 	dev_dbg(&pdev->dev, "Device File Release\n");
 
-	mutex_lock(&pdata->lock);
-	dfl_feature_dev_use_end(pdata);
+	mutex_lock(&fdata->lock);
+	dfl_feature_dev_use_end(fdata);
 
-	if (!dfl_feature_dev_use_count(pdata))
-		dfl_fpga_dev_for_each_feature(pdata, feature)
+	if (!dfl_feature_dev_use_count(fdata))
+		dfl_fpga_dev_for_each_feature(fdata, feature)
 			dfl_fpga_set_irq_triggers(feature, 0,
 						  feature->nr_irqs, NULL);
-	mutex_unlock(&pdata->lock);
+	mutex_unlock(&fdata->lock);
 
 	return 0;
 }
@@ -640,7 +643,8 @@ static int fme_release(struct inode *inode, struct file *filp)
 static long fme_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct dfl_feature_platform_data *pdata = filp->private_data;
-	struct platform_device *pdev = pdata->dev;
+	struct dfl_feature_dev_data *fdata = pdata;
+	struct platform_device *pdev = fdata->dev;
 	struct dfl_feature *f;
 	long ret;
 
@@ -650,7 +654,7 @@ static long fme_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	case DFL_FPGA_GET_API_VERSION:
 		return DFL_FPGA_API_VERSION;
 	case DFL_FPGA_CHECK_EXTENSION:
-		return fme_ioctl_check_extension(pdata, arg);
+		return fme_ioctl_check_extension(fdata, arg);
 	default:
 		/*
 		 * Let sub-feature's ioctl function to handle the cmd.
@@ -658,7 +662,7 @@ static long fme_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		 * handled in this sub feature, and returns 0 or other
 		 * error code if cmd is handled.
 		 */
-		dfl_fpga_dev_for_each_feature(pdata, f) {
+		dfl_fpga_dev_for_each_feature(fdata, f) {
 			if (f->ops && f->ops->ioctl) {
 				ret = f->ops->ioctl(pdev, f, cmd, arg);
 				if (ret != -ENODEV)
@@ -672,27 +676,27 @@ static long fme_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 static int fme_dev_init(struct platform_device *pdev)
 {
-	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);
 	struct dfl_fme *fme;
 
 	fme = devm_kzalloc(&pdev->dev, sizeof(*fme), GFP_KERNEL);
 	if (!fme)
 		return -ENOMEM;
 
-	mutex_lock(&pdata->lock);
-	dfl_fpga_pdata_set_private(pdata, fme);
-	mutex_unlock(&pdata->lock);
+	mutex_lock(&fdata->lock);
+	dfl_fpga_fdata_set_private(fdata, fme);
+	mutex_unlock(&fdata->lock);
 
 	return 0;
 }
 
 static void fme_dev_destroy(struct platform_device *pdev)
 {
-	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);
 
-	mutex_lock(&pdata->lock);
-	dfl_fpga_pdata_set_private(pdata, NULL);
-	mutex_unlock(&pdata->lock);
+	mutex_lock(&fdata->lock);
+	dfl_fpga_fdata_set_private(fdata, NULL);
+	mutex_unlock(&fdata->lock);
 }
 
 static const struct file_operations fme_fops = {
-- 
2.44.0