soc: mediatek: mtk-svs: keep svs alive if CONFIG_DEBUG_FS not supported

[ Upstream commit 8bf3050 ]

Some projects might not support CONFIG_DEBUG_FS but still needs svs to be
alive. Therefore, enclose debug cmd codes with CONFIG_DEBUG_FS to make sure
svs can be alive when CONFIG_DEBUG_FS not supported.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Link: https://lore.kernel.org/r/20230111074528.29354-8-roger.lu@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: mtk-rogerlu

drivers/soc/mediatek/mtk-svs.c

@@ -138,6 +138,7 @@
 
 static DEFINE_SPINLOCK(svs_lock);
 
+#ifdef CONFIG_DEBUG_FS
 #define debug_fops_ro(name)						\
 	static int svs_##name##_debug_open(struct inode *inode,		\
 					   struct file *filp)		\
@@ -170,6 +171,7 @@ static DEFINE_SPINLOCK(svs_lock);
 	}
 
 #define svs_dentry_data(name)	{__stringify(name), &svs_##name##_debug_fops}
+#endif
 
 /**
  * enum svsb_phase - svs bank phase enumeration
@@ -628,6 +630,7 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
 	return ret;
 }
 
+#ifdef CONFIG_DEBUG_FS
 static int svs_dump_debug_show(struct seq_file *m, void *p)
 {
 	struct svs_platform *svsp = (struct svs_platform *)m->private;
@@ -843,6 +846,7 @@ static int svs_create_debug_cmds(struct svs_platform *svsp)
 
 	return 0;
 }
+#endif /* CONFIG_DEBUG_FS */
 
 static u32 interpolate(u32 f0, u32 f1, u32 v0, u32 v1, u32 fx)
 {
@@ -2444,11 +2448,13 @@ static int svs_probe(struct platform_device *pdev)
 		goto svs_probe_iounmap;
 	}
 
+#ifdef CONFIG_DEBUG_FS
 	ret = svs_create_debug_cmds(svsp);
 	if (ret) {
 		dev_err(svsp->dev, "svs create debug cmds fail: %d\n", ret);
 		goto svs_probe_iounmap;
 	}
+#endif
 
 	return 0;