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From: michael.kao <michael.kao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: Zhang Rui <rui.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Eduardo Valentin
	<edubezval-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Daniel Lezcano
	<daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	Matthias Brugger
	<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	hsinyi-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"michael.kao"
	<michael.kao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
	linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [PATCH v2 8/8] thermal: mediatek: use spinlock to protect PTPCORESEL
Date: Fri, 10 May 2019 21:27:06 +0800
Message-ID: <1557494826-6044-9-git-send-email-michael.kao@mediatek.com> (raw)
In-Reply-To: <1557494826-6044-1-git-send-email-michael.kao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>

The driver of thermal and svs will use the
same register for the project which should select
bank before reading sensor value.

Signed-off-by: Michael.Kao <michael.kao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
 drivers/thermal/mtk_thermal.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index d5c78b0..6d7e839 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -30,6 +30,7 @@
 #include <linux/thermal.h>
 #include <linux/reset.h>
 #include <linux/types.h>
+#include <linux/power/mtk_svs.h>
 
 /* AUXADC Registers */
 #define AUXADC_CON1_SET_V	0x008
@@ -267,7 +268,7 @@ struct mtk_thermal {
 	struct clk *clk_peri_therm;
 	struct clk *clk_auxadc;
 	/* lock: for getting and putting banks */
-	struct mutex lock;
+	unsigned long flags;
 
 	/* Calibration values */
 	s32 adc_ge;
@@ -566,7 +567,7 @@ static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)
 	u32 val;
 
 	if (mt->conf->need_switch_bank) {
-		mutex_lock(&mt->lock);
+		mt->flags = claim_mtk_svs_lock();
 
 		val = readl(mt->thermal_base + PTPCORESEL);
 		val &= ~0xf;
@@ -586,7 +587,7 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
 	struct mtk_thermal *mt = bank->mt;
 
 	if (mt->conf->need_switch_bank)
-		mutex_unlock(&mt->lock);
+		release_mtk_svs_lock(mt->flags);
 }
 
 /**
@@ -941,8 +942,6 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	mutex_init(&mt->lock);
-
 	mt->dev = &pdev->dev;
 
 	auxadc = of_parse_phandle(np, "mediatek,auxadc", 0);
-- 
2.6.4

  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-10 13:26 [PATCH v2 0/8] Add Mediatek thermal dirver and dtsi michael.kao
2019-05-10 13:26 ` [PATCH v2 1/8] arm64: dts: mt8183: add thermal zone node michael.kao
2019-05-30  6:27   ` Hsin-Yi Wang
2019-05-30 16:08     ` Matthias Kaehlcke
     [not found] ` <1557494826-6044-1-git-send-email-michael.kao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-05-10 13:27   ` [PATCH v2 2/8] arm64: dts: mt8183: add/update dynamic power coefficients michael.kao
2019-05-10 13:27   ` [PATCH v2 4/8] arm64: dts: mt8183: Configure CPU cooling michael.kao
2019-05-10 13:27   ` [PATCH v2 5/8] arm64: dts: mt8183: Increase polling frequency for CPU thermal zone michael.kao
2019-05-10 13:27   ` [PATCH v2 6/8] thermal: mediatek: mt8183: fix bank number settings michael.kao
2019-05-10 13:27   ` michael.kao [this message]
2019-05-10 13:27 ` [PATCH v2 3/8] arm64: dts: mt8183: Add #cooling-cells to CPU nodes michael.kao
2019-05-10 13:27 ` [PATCH v2 7/8] thermal: mediatek: add another get_temp ops for thermal sensors michael.kao
2019-09-09 11:13   ` Hsin-Yi Wang
2019-11-21  7:00   ` Hsin-Yi Wang
2019-12-06  9:35     ` Michael Kao
2019-12-05 16:38 ` [PATCH v2 0/8] Add Mediatek thermal dirver and dtsi Daniel Lezcano

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