From: Choonghoon Park <choong.park@samsung.com>
Date: Fri, 15 Jun 2018 09:24:16 +0000 (+0900)
Subject: hafm: deliver zero pb when frequency is equal to or above threshold
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a1ff3bf0ac7f4a87c5ccb837a43d16cdb030369b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

hafm: deliver zero pb when frequency is equal to or above threshold

This zero value notifies hwboost plugin that
the plugin have to use the power budget it stored recently.

Change-Id: I8157aa07de4ed6306c68fb7daecd8b9608c31f74
---

diff --git a/drivers/soc/samsung/exynos-hafm.c b/drivers/soc/samsung/exynos-hafm.c
index 02401b22f3a2..88d9f0f83bcd 100644
--- a/drivers/soc/samsung/exynos-hafm.c
+++ b/drivers/soc/samsung/exynos-hafm.c
@@ -49,7 +49,15 @@ static unsigned int hiu_get_freq_level(unsigned int freq)
 
 static unsigned int hiu_get_power_budget(unsigned int freq)
 {
-	return data->sw_pbl;
+	if (unlikely(!data->pb_delivered)) {
+		data->pb_delivered = true;
+		return data->sw_pbl;
+	}
+
+	if (freq >= data->boost_threshold)
+		return 0;
+	else
+		return data->sw_pbl;
 }
 
 static void hiu_update_reg(int offset, int mask, int shift, unsigned int val)
@@ -558,6 +566,7 @@ static int exynos_hiu_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, data);
 
 	data->base = ioremap(GCU_BASE, SZ_4K);
+	data->pb_delivered = false;
 
 	ret = hiu_dt_parsing(dn);
 	if (ret) {
diff --git a/drivers/soc/samsung/exynos-hiu.h b/drivers/soc/samsung/exynos-hiu.h
index 89dfab10c8fe..04304b306c7d 100644
--- a/drivers/soc/samsung/exynos-hiu.h
+++ b/drivers/soc/samsung/exynos-hiu.h
@@ -127,7 +127,7 @@ struct exynos_hiu_data {
 	bool			pc_enabled;
 	bool			tb_enabled;
 	bool			hwidvfs_done;
-	bool			boosting_activated;
+	bool			pb_delivered;
 
 	int			operation_mode;