mmrm: Resolve for invalid voltage corner values

- When qcom_clk_get_voltage encounters an error,
return the error.
- When qcom_clk_get_voltage returns a level higher
than supported, return an error.
- Added warning debug level.
- Minor formatting changes.

Change-Id: I6d7147f6af83bff2d84ef40c3a11cfef7faca391

driver/src/mmrm_clk_rsrc_mgr_sw.c

@@ -164,12 +164,23 @@ static int mmrm_sw_get_req_level(
 
 	/* get voltage corner */
 	voltage_corner = qcom_clk_get_voltage(tbl_entry->clk, clk_val);
+	if (voltage_corner < 0 || voltage_corner > mmrm_sw_vdd_corner[MMRM_VDD_LEVEL_TURBO]) {
+		d_mpr_e("%s: csid(%d): invalid voltage corner(%d) for clk rate(%llu)\n",
+			__func__,
+			tbl_entry->clk_src_id,
+			voltage_corner,
+			clk_val);
+		rc = voltage_corner;
+		goto err_invalid_corner;
+	}
 
 	/* voltage corner is below svsl1 */
 	if (voltage_corner < mmrm_sw_vdd_corner[MMRM_VDD_LEVEL_SVS_L1]) {
 		/* TBD: remove this when scaling calculations are added */
-		d_mpr_e("%s: csid(%d): lower voltage corner(%d)\n",
-			__func__, tbl_entry->clk_src_id, voltage_corner);
+		d_mpr_w("%s: csid(%d): lower voltage corner(%d)\n",
+			__func__,
+			tbl_entry->clk_src_id,
+			voltage_corner);
 		*req_level = MMRM_VDD_LEVEL_SVS_L1;
 		goto exit_no_err;
 	}
@@ -182,7 +193,10 @@ static int mmrm_sw_get_req_level(
 
 	if (level == MMRM_VDD_LEVEL_MAX) {
 		d_mpr_e("%s: csid(%d): invalid voltage corner(%d) for clk rate(%llu)\n",
-			__func__, tbl_entry->clk_src_id, voltage_corner, clk_val);
+			__func__,
+			tbl_entry->clk_src_id,
+			voltage_corner,
+			clk_val);
 		rc = -EINVAL;
 		goto err_invalid_corner;
 	}

driver/src/mmrm_debug.c

@@ -7,21 +7,18 @@
 
 #include "mmrm_debug.h"
 
-int msm_mmrm_debug = MMRM_ERR | MMRM_PRINTK;
+int msm_mmrm_debug = MMRM_ERR | MMRM_WARN | MMRM_PRINTK;
 
 #define MAX_DBG_BUF_SIZE 4096
 
-static ssize_t msm_mmrm_debugfs_info_read(struct file *file,
-	char __user *buf,
-	size_t count,
-	loff_t *ppos)
+static ssize_t msm_mmrm_debugfs_info_read(
+	struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
 	char *dbuf, *cur, *end;
 	ssize_t len = 0;
 
 	dbuf = kzalloc(MAX_DBG_BUF_SIZE, GFP_KERNEL);
-	if (!dbuf)
-	{
+	if (!dbuf) {
 		d_mpr_e("%s: Allocation failed!\n", __func__);
 		return -ENOMEM;
 	}
@@ -50,32 +47,32 @@ struct dentry *msm_mmrm_debugfs_init(void)
 
 	/* create a directory in debugfs root (/sys/kernel/debug) */
 	dir = debugfs_create_dir("msm_mmrm", NULL);
-	if (IS_ERR_OR_NULL(dir))
-	{
+	if (IS_ERR_OR_NULL(dir)) {
 		d_mpr_e("%s: Call to debugfs_create_dir(%s) failed!\n", __func__, "mmrm");
 		goto failed_create_dir;
 	}
 
 	/* basic info */
-	if (!debugfs_create_file("info", 0444, dir, &file_val, &msm_mmrm_debugfs_info_fops))
-	{
+	if (!debugfs_create_file("info", 0444, dir, &file_val, &msm_mmrm_debugfs_info_fops)) {
 		d_mpr_e("%s: Call to debugfs_create_file(%s) failed!\n", __func__, "info");
 		goto failed_create_dir;
 	}
 
-#define __debugfs_create(__type, __name, __value) ({ \
+#define __debugfs_create(__type, __name, __value) \
+	({ \
 		struct dentry *f = debugfs_create_##__type(__name, 0644, dir, __value); \
 		if (IS_ERR_OR_NULL(f)) { \
 			d_mpr_e("%s: Failed creating debugfs file '%pd/%s'\n", \
-			__func__, dir, __name); \
+				__func__, \
+				dir, \
+				__name); \
 			f = NULL; \
 		} \
 		f; \
-})
+	})
 
 	/* add other params here */
-	ok =
-	__debugfs_create(u32, "debug_level", &msm_mmrm_debug);
+	ok = __debugfs_create(u32, "debug_level", &msm_mmrm_debug);
 
 #undef __debugfs_create
 

driver/src/mmrm_debug.h

@@ -10,7 +10,7 @@
 #include <linux/printk.h>
 
 #ifndef MMRM_DBG_LABEL
-#define MMRM_DBG_LABEL "msm_mmrm: "
+#define MMRM_DBG_LABEL "msm_mmrm"
 #endif
 
 #define MMRM_DBG_TAG MMRM_DBG_LABEL ": %4s: "
@@ -18,11 +18,11 @@
 /* To enable messages OR these values and
  * echo the result to debugfs file.
  */
-enum mmrm_msg_prio
-{
+enum mmrm_msg_prio {
 	MMRM_ERR = 0x000001,
 	MMRM_HIGH = 0x000002,
 	MMRM_LOW = 0x000004,
+	MMRM_WARN = 0x000008,
 	MMRM_PRINTK = 0x010000,
 	MMRM_FTRACE = 0x020000,
 };
@@ -30,14 +30,12 @@ enum mmrm_msg_prio
 extern int msm_mmrm_debug;
 
 #define dprintk(__level, __fmt, ...) \
-	do \
-	{ \
-		if (msm_mmrm_debug & __level) \
-		{ \
-			if (msm_mmrm_debug & MMRM_PRINTK) \
-			{ \
+	do { \
+		if (msm_mmrm_debug & __level) { \
+			if (msm_mmrm_debug & MMRM_PRINTK) { \
 				pr_info(MMRM_DBG_TAG __fmt, \
-					get_debug_level_str(__level), ##__VA_ARGS__); \
+					get_debug_level_str(__level), \
+					##__VA_ARGS__); \
 			} \
 		} \
 	} while (0)
@@ -45,17 +43,19 @@ extern int msm_mmrm_debug;
 #define d_mpr_e(__fmt, ...) dprintk(MMRM_ERR, __fmt, ##__VA_ARGS__)
 #define d_mpr_h(__fmt, ...) dprintk(MMRM_HIGH, __fmt, ##__VA_ARGS__)
 #define d_mpr_l(__fmt, ...) dprintk(MMRM_LOW, __fmt, ##__VA_ARGS__)
+#define d_mpr_w(__fmt, ...) dprintk(MMRM_WARN, __fmt, ##__VA_ARGS__)
 
 static inline char *get_debug_level_str(int level)
 {
-	switch (level)
-	{
+	switch (level) {
 	case MMRM_ERR:
 		return "err ";
 	case MMRM_HIGH:
 		return "high";
 	case MMRM_LOW:
 		return "low ";
+	case MMRM_WARN:
+		return "warn";
 	default:
 		return "????";
 	}

driver/src/mmrm_res_parse.c

@@ -34,13 +34,16 @@ static int mmrm_read_clk_pltfrm_rsrc_frm_drv_data(
 
 	pdata = ddata->platform_data;
 	cres = &ddata->clk_res;
+
 	cres->threshold = mmrm_find_key_value(pdata,
 						"qcom,mmrm_clk_threshold");
 	d_mpr_e("%s: configured mmrm clk threshold %d\n",
 		__func__, cres->threshold);
 
 	cres->scheme = mmrm_find_key_value(pdata,
-					"qcom,mmrm clk mgr scheme");
+					"qcom,mmrm_clk_mgr_scheme");
+	d_mpr_e("%s: configured mmrm scheme %d\n",
+		__func__, cres->scheme);
 
 	return rc;
 }