platform/x86: intel_pmc_core: convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/intel_pmc_core.c

@@ -367,7 +367,7 @@ static void pmc_core_display_map(struct seq_file *s, int index,
 		   pf_map[index].bit_mask & pf_reg ? "Off" : "On");
 }
 
-static int pmc_core_ppfear_sts_show(struct seq_file *s, void *unused)
+static int pmc_core_ppfear_show(struct seq_file *s, void *unused)
 {
 	struct pmc_dev *pmcdev = s->private;
 	const struct pmc_bit_map *map = pmcdev->map->pfear_sts;
@@ -385,18 +385,7 @@ static int pmc_core_ppfear_sts_show(struct seq_file *s, void *unused)
 
 	return 0;
 }
-
-static int pmc_core_ppfear_sts_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, pmc_core_ppfear_sts_show, inode->i_private);
-}
-
-static const struct file_operations pmc_core_ppfear_ops = {
-	.open           = pmc_core_ppfear_sts_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(pmc_core_ppfear);
 
 /* This function should return link status, 0 means ready */
 static int pmc_core_mtpmc_link_status(void)
@@ -428,7 +417,7 @@ static int pmc_core_send_msg(u32 *addr_xram)
 	return 0;
 }
 
-static int pmc_core_mphy_pg_sts_show(struct seq_file *s, void *unused)
+static int pmc_core_mphy_pg_show(struct seq_file *s, void *unused)
 {
 	struct pmc_dev *pmcdev = s->private;
 	const struct pmc_bit_map *map = pmcdev->map->mphy_sts;
@@ -480,18 +469,7 @@ static int pmc_core_mphy_pg_sts_show(struct seq_file *s, void *unused)
 	mutex_unlock(&pmcdev->lock);
 	return err;
 }
-
-static int pmc_core_mphy_pg_sts_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, pmc_core_mphy_pg_sts_show, inode->i_private);
-}
-
-static const struct file_operations pmc_core_mphy_pg_ops = {
-	.open           = pmc_core_mphy_pg_sts_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(pmc_core_mphy_pg);
 
 static int pmc_core_pll_show(struct seq_file *s, void *unused)
 {
@@ -527,18 +505,7 @@ static int pmc_core_pll_show(struct seq_file *s, void *unused)
 	mutex_unlock(&pmcdev->lock);
 	return err;
 }
-
-static int pmc_core_pll_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, pmc_core_pll_show, inode->i_private);
-}
-
-static const struct file_operations pmc_core_pll_ops = {
-	.open           = pmc_core_pll_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(pmc_core_pll);
 
 static ssize_t pmc_core_ltr_ignore_write(struct file *file, const char __user
 *userbuf, size_t count, loff_t *ppos)
@@ -729,7 +696,7 @@ static int pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
 			    &pmc_core_dev_state);
 
 	debugfs_create_file("pch_ip_power_gating_status", 0444, dir, pmcdev,
-			    &pmc_core_ppfear_ops);
+			    &pmc_core_ppfear_fops);
 
 	debugfs_create_file("ltr_ignore", 0644, dir, pmcdev,
 			    &pmc_core_ltr_ignore_ops);
@@ -738,12 +705,12 @@ static int pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
 
 	if (pmcdev->map->pll_sts)
 		debugfs_create_file("pll_status", 0444, dir, pmcdev,
-				    &pmc_core_pll_ops);
+				    &pmc_core_pll_fops);
 
 	if (pmcdev->map->mphy_sts)
 		debugfs_create_file("mphy_core_lanes_power_gating_status",
 				    0444, dir, pmcdev,
-				    &pmc_core_mphy_pg_ops);
+				    &pmc_core_mphy_pg_fops);
 
 	if (pmcdev->map->slps0_dbg_maps) {
 		debugfs_create_file("slp_s0_debug_status", 0444,