Re: [PATCH v4 2/2] platform/x86/amd/pmf: Add PMF debug facilities

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On 5/10/23 09:47, Shyam Sundar S K wrote:
At times, when the mode transitions fail to happen, the current
driver does not give enough debug information on why the transition
failed or the default preset values did not load. Having an on-demand
logs guarded by CONFIG would be helpful in such cases.

Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@xxxxxxx>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@xxxxxxx>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
v4:
  - Remove extra space as pointed by Ilpo.

v3:
  - Based on review-hans branch
  - Address Ilpo's review remarks
  - use the right format specifiers while printing the data

v2:
  - Based on review-hans branch
  - Drop extra CONFIG item based on feedback from Hans

  drivers/platform/x86/amd/pmf/auto-mode.c | 23 +++++++++++++++++++++++
  drivers/platform/x86/amd/pmf/cnqf.c      | 19 +++++++++++++++++++
  2 files changed, 42 insertions(+)

diff --git a/drivers/platform/x86/amd/pmf/auto-mode.c b/drivers/platform/x86/amd/pmf/auto-mode.c
index 64425201d353..02ff68be10d0 100644
--- a/drivers/platform/x86/amd/pmf/auto-mode.c
+++ b/drivers/platform/x86/amd/pmf/auto-mode.c
@@ -179,11 +179,34 @@ void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t t
  			config_store.transition[i].applied = false;
  			update = true;
  		}
+
+#ifdef CONFIG_AMD_PMF_DEBUG
+		dev_dbg(dev->dev, "[AUTO MODE] average_power : %d mW mode: %s\n", avg_power,
+			state_as_str(config_store.current_mode));
+
+		dev_dbg(dev->dev, "[AUTO MODE] time: %lld ms timer: %u ms tc: %u ms\n",
+			time_elapsed_ms, config_store.transition[i].timer,
+			config_store.transition[i].time_constant);
+
+		dev_dbg(dev->dev, "[AUTO MODE] shiftup: %u pt: %u mW pf: %u mW pd: %u mW\n",
+			config_store.transition[i].shifting_up,
+			config_store.transition[i].power_threshold,
+			config_store.mode_set[i].power_floor,
+			config_store.transition[i].power_delta);
+#endif
  	}
dev_dbg(dev->dev, "[AUTO_MODE] avg power: %u mW mode: %s\n", avg_power,
  		state_as_str(config_store.current_mode));
+#ifdef CONFIG_AMD_PMF_DEBUG
+	dev_dbg(dev->dev, "[AUTO MODE] priority1: %u priority2: %u priority3: %u priority4: %u\n",
+		config_store.transition[0].applied,
+		config_store.transition[1].applied,
+		config_store.transition[2].applied,
+		config_store.transition[3].applied);
+#endif
+
  	if (update) {
  		for (j = 0; j < AUTO_TRANSITION_MAX; j++) {
  			/* Apply the mode with highest priority indentified */
diff --git a/drivers/platform/x86/amd/pmf/cnqf.c b/drivers/platform/x86/amd/pmf/cnqf.c
index 35af7c18f600..539b186e9027 100644
--- a/drivers/platform/x86/amd/pmf/cnqf.c
+++ b/drivers/platform/x86/amd/pmf/cnqf.c
@@ -175,6 +175,13 @@ int amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_l
  		config_store.trans_param[src][i].count++;
tp = &config_store.trans_param[src][i];
+
+#ifdef CONFIG_AMD_PMF_DEBUG
+		dev_dbg(dev->dev, "avg_power: %u mW total_power: %u mW count: %u timer: %u ms\n",
+			avg_power, config_store.trans_param[src][i].total_power,
+			config_store.trans_param[src][i].count,
+			config_store.trans_param[src][i].timer);
+#endif
  		if (tp->timer >= tp->time_constant && tp->count) {
  			avg_power = tp->total_power / tp->count;
@@ -195,6 +202,18 @@ int amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_l
  	dev_dbg(dev->dev, "[CNQF] Avg power: %u mW socket power: %u mW mode:%s\n",
  		avg_power, socket_power, state_as_str(config_store.current_mode));
+#ifdef CONFIG_AMD_PMF_DEBUG
+	dev_dbg(dev->dev, "[CNQF] priority1: %u priority2: %u priority3: %u\n",
+		config_store.trans_param[src][0].priority,
+		config_store.trans_param[src][1].priority,
+		config_store.trans_param[src][2].priority);
+
+	dev_dbg(dev->dev, "[CNQF] priority4: %u priority5: %u priority6: %u\n",
+		config_store.trans_param[src][3].priority,
+		config_store.trans_param[src][4].priority,
+		config_store.trans_param[src][5].priority);
+#endif
+
  	for (j = 0; j < CNQF_TRANSITION_MAX; j++) {
  		/* apply the highest priority */
  		if (config_store.trans_param[src][j].priority) {



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