OPP updates for 6.9

- Fix couple of warnings related to W=1 builds. (Viresh Kumar).
 - Move Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh Kumar).
 - Extend dev_pm_opp_data with turbo support (Sibi Sankar).
 - dt-bindings: drop maxItems from inner items (David Heidelberg).
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Merge tag 'opp-updates-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm into pm

Merge OPP (operating performance points) updates for 6.9 from Viresh
Kumar:

"- Fix couple of warnings related to W=1 builds. (Viresh Kumar).
 - Move Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh Kumar).
 - Extend dev_pm_opp_data with turbo support (Sibi Sankar).
 - dt-bindings: drop maxItems from inner items (David Heidelberg)."

* tag 'opp-updates-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  dt-bindings: opp: drop maxItems from inner items
  OPP: debugfs: Fix warning around icc_get_name()
  OPP: debugfs: Fix warning with W=1 builds
  cpufreq: Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h
  OPP: Extend dev_pm_opp_data with turbo support

Documentation/devicetree/bindings/opp/opp-v2-base.yaml

@@ -57,8 +57,6 @@ patternProperties:
           specific binding.
         minItems: 1
         maxItems: 32
-        items:
-          maxItems: 1
 
       opp-microvolt:
         description: |

drivers/opp/core.c

@@ -2065,6 +2065,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
 	/* populate the opp table */
 	new_opp->rates[0] = data->freq;
 	new_opp->level = data->level;
+	new_opp->turbo = data->turbo;
 	tol = u_volt * opp_table->voltage_tolerance_v1 / 100;
 	new_opp->supplies[0].u_volt = u_volt;
 	new_opp->supplies[0].u_volt_min = u_volt - tol;

drivers/opp/debugfs.c

@@ -37,10 +37,12 @@ static ssize_t bw_name_read(struct file *fp, char __user *userbuf,
 			    size_t count, loff_t *ppos)
 {
 	struct icc_path *path = fp->private_data;
+	const char *name = icc_get_name(path);
 	char buf[64];
-	int i;
+	int i = 0;
 
-	i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path));
+	if (name)
+		i = scnprintf(buf, sizeof(buf), "%.62s\n", name);
 
 	return simple_read_from_buffer(userbuf, count, ppos, buf, i);
 }
@@ -56,11 +58,11 @@ static void opp_debug_create_bw(struct dev_pm_opp *opp,
 				struct dentry *pdentry)
 {
 	struct dentry *d;
-	char name[20];
+	char name[] = "icc-path-XXXXXXXXXXX"; /* Integers can take 11 chars max */
 	int i;
 
 	for (i = 0; i < opp_table->path_count; i++) {
-		snprintf(name, sizeof(name), "icc-path-%.1d", i);
+		snprintf(name, sizeof(name), "icc-path-%d", i);
 
 		/* Create per-path directory */
 		d = debugfs_create_dir(name, pdentry);
@@ -78,7 +80,7 @@ static void opp_debug_create_clks(struct dev_pm_opp *opp,
 				  struct opp_table *opp_table,
 				  struct dentry *pdentry)
 {
-	char name[12];
+	char name[] = "rate_hz_XXXXXXXXXXX"; /* Integers can take 11 chars max */
 	int i;
 
 	if (opp_table->clk_count == 1) {
@@ -100,7 +102,7 @@ static void opp_debug_create_supplies(struct dev_pm_opp *opp,
 	int i;
 
 	for (i = 0; i < opp_table->regulator_count; i++) {
-		char name[15];
+		char name[] = "supply-XXXXXXXXXXX"; /* Integers can take 11 chars max */
 
 		snprintf(name, sizeof(name), "supply-%d", i);
 

include/linux/cpufreq.h

@@ -693,26 +693,6 @@ struct cpufreq_frequency_table {
 				    * order */
 };
 
-#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
-int dev_pm_opp_init_cpufreq_table(struct device *dev,
-				  struct cpufreq_frequency_table **table);
-void dev_pm_opp_free_cpufreq_table(struct device *dev,
-				   struct cpufreq_frequency_table **table);
-#else
-static inline int dev_pm_opp_init_cpufreq_table(struct device *dev,
-						struct cpufreq_frequency_table
-						**table)
-{
-	return -EINVAL;
-}
-
-static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
-						 struct cpufreq_frequency_table
-						 **table)
-{
-}
-#endif
-
 /*
  * cpufreq_for_each_entry -	iterate over a cpufreq_frequency_table
  * @pos:	the cpufreq_frequency_table * to use as a loop cursor.

include/linux/pm_opp.h

@@ -16,6 +16,7 @@
 #include <linux/notifier.h>
 
 struct clk;
+struct cpufreq_frequency_table;
 struct regulator;
 struct dev_pm_opp;
 struct device;
@@ -87,12 +88,14 @@ struct dev_pm_opp_config {
 
 /**
  * struct dev_pm_opp_data - The data to use to initialize an OPP.
+ * @turbo: Flag to indicate whether the OPP is to be marked turbo or not.
  * @level: The performance level for the OPP. Set level to OPP_LEVEL_UNSET if
  * level field isn't used.
  * @freq: The clock rate in Hz for the OPP.
  * @u_volt: The voltage in uV for the OPP.
  */
 struct dev_pm_opp_data {
+	bool turbo;
 	unsigned int level;
 	unsigned long freq;
 	unsigned long u_volt;
@@ -444,6 +447,21 @@ static inline int dev_pm_opp_sync_regulators(struct device *dev)
 
 #endif		/* CONFIG_PM_OPP */
 
+#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
+int dev_pm_opp_init_cpufreq_table(struct device *dev, struct cpufreq_frequency_table **table);
+void dev_pm_opp_free_cpufreq_table(struct device *dev, struct cpufreq_frequency_table **table);
+#else
+static inline int dev_pm_opp_init_cpufreq_table(struct device *dev, struct cpufreq_frequency_table **table)
+{
+	return -EINVAL;
+}
+
+static inline void dev_pm_opp_free_cpufreq_table(struct device *dev, struct cpufreq_frequency_table **table)
+{
+}
+#endif
+
+
 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
 int dev_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);