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From: Roger Lu <roger.lu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
	Enric Balletbo Serra <eballetbo@gmail.com>,
	Kevin Hilman <khilman@kernel.org>,
	Nicolas Boichat <drinkcat@google.com>
Cc: Fan Chen <fan.chen@mediatek.com>,
	Roger Lu <roger.lu@mediatek.com>,
	Jia-wei Chang <jia-wei.chang@mediatek.com>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v1 08/13] soc: mediatek: mtk-svs: add main_clk check during system-wide suspend
Date: Mon, 26 Dec 2022 17:42:43 +0800	[thread overview]
Message-ID: <20221226094248.4506-9-roger.lu@mediatek.com> (raw)
In-Reply-To: <20221226094248.4506-1-roger.lu@mediatek.com>

SVS's main_clk might be disabled in svs_resume(). Therefore, if main_clk
is disabled and svs_suspend() is called by system-wide suspend stage,
return 0 directly.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
---
 drivers/soc/mediatek/mtk-svs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 2c1fbf11b554..934e7ea976b0 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -6,6 +6,7 @@
 #include <linux/bitfield.h>
 #include <linux/bits.h>
 #include <linux/clk.h>
+#include <linux/clk-provider.h>
 #include <linux/completion.h>
 #include <linux/cpuidle.h>
 #include <linux/debugfs.h>
@@ -1543,6 +1544,9 @@ static int svs_suspend(struct device *dev)
 	int ret;
 	u32 idx;
 
+	if (!__clk_is_enabled(svsp->main_clk))
+		return 0;
+
 	for (idx = 0; idx < svsp->bank_max; idx++) {
 		svsb = &svsp->banks[idx];
 
-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: Roger Lu <roger.lu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
	Enric Balletbo Serra <eballetbo@gmail.com>,
	Kevin Hilman <khilman@kernel.org>,
	Nicolas Boichat <drinkcat@google.com>
Cc: Fan Chen <fan.chen@mediatek.com>,
	Roger Lu <roger.lu@mediatek.com>,
	Jia-wei Chang <jia-wei.chang@mediatek.com>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v1 08/13] soc: mediatek: mtk-svs: add main_clk check during system-wide suspend
Date: Mon, 26 Dec 2022 17:42:43 +0800	[thread overview]
Message-ID: <20221226094248.4506-9-roger.lu@mediatek.com> (raw)
In-Reply-To: <20221226094248.4506-1-roger.lu@mediatek.com>

SVS's main_clk might be disabled in svs_resume(). Therefore, if main_clk
is disabled and svs_suspend() is called by system-wide suspend stage,
return 0 directly.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
---
 drivers/soc/mediatek/mtk-svs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index 2c1fbf11b554..934e7ea976b0 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -6,6 +6,7 @@
 #include <linux/bitfield.h>
 #include <linux/bits.h>
 #include <linux/clk.h>
+#include <linux/clk-provider.h>
 #include <linux/completion.h>
 #include <linux/cpuidle.h>
 #include <linux/debugfs.h>
@@ -1543,6 +1544,9 @@ static int svs_suspend(struct device *dev)
 	int ret;
 	u32 idx;
 
+	if (!__clk_is_enabled(svsp->main_clk))
+		return 0;
+
 	for (idx = 0; idx < svsp->bank_max; idx++) {
 		svsb = &svsp->banks[idx];
 
-- 
2.18.0


_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2022-12-26  9:43 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-26  9:42 [PATCH v1 0/13] Enahance SVS's robustness Roger Lu
2022-12-26  9:42 ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 01/13] soc: mediatek: mtk-svs: enable the IRQ later Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 02/13] soc: mediatek: mtk-svs: clean up platform probing Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 03/13] soc: mediatek: mtk-svs: improve readability of platform_probe Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 04/13] soc: mediatek: mtk-svs: move svs_platform_probe into probe Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 05/13] soc: mediatek: mtk-svs: delete superfluous platform data entries Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 06/13] soc: mediatek: mtk-svs: use svs get efuse common function Roger Lu
2022-12-26  9:42   ` Roger Lu
2022-12-26  9:42 ` [PATCH v1 07/13] soc: mtk-svs: mt8183: refactor o_slope calculation Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2022-12-26  9:42 ` Roger Lu [this message]
2022-12-26  9:42   ` [PATCH v1 08/13] soc: mediatek: mtk-svs: add main_clk check during system-wide suspend Roger Lu
2022-12-26  9:42 ` [PATCH v1 09/13] soc: mediatek: mtk-svs: use common function to disable restore voltages Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2022-12-26  9:42 ` [PATCH v1 10/13] soc: mediatek: mtk-svs: restore default voltages when svs init02 fail Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2023-01-10  5:30     ` Roger Lu (陸瑞傑)
2023-01-10  5:30       ` Roger Lu (陸瑞傑)
2022-12-26  9:42 ` [PATCH v1 11/13] soc: mediatek: mtk-svs: add thermal voltage compensation if needed Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2022-12-26  9:42 ` [PATCH v1 12/13] soc: mediatek: mtk-svs: Use pm_runtime_resume_and_get() in svs_init01() Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2022-12-26  9:42 ` [PATCH v1 13/13] soc: mediatek: mtk-svs: keep svs alive even though debug cmd create fail Roger Lu
2022-12-26  9:42   ` Roger Lu
2023-01-03 12:49   ` AngeloGioacchino Del Regno
2023-01-03 12:49     ` AngeloGioacchino Del Regno
2023-01-10  5:35     ` Roger Lu (陸瑞傑)
2023-01-10  5:35       ` Roger Lu (陸瑞傑)

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