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From:   Chen-Yu Tsai <wenst@chromium.org>
To:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Amit Kucheria <amitk@kernel.org>,
        Zhang Rui <rui.zhang@intel.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= 
        <nfraprado@collabora.com>
Cc:     Chen-Yu Tsai <wenst@chromium.org>, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org
Subject: [PATCH RESEND] thermal/drivers/mediatek/lvts_thermal: Register thermal zones as hwmon sensors
Date:   Tue, 13 Jun 2023 17:13:16 +0800
Message-ID: <20230613091317.1691247-1-wenst@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Register thermal zones as hwmon sensors to let userspace read
temperatures using standard hwmon interface.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 drivers/thermal/mediatek/lvts_thermal.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index d0a3f95b7884..1e11defe4f35 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -19,6 +19,8 @@
 #include <linux/thermal.h>
 #include <dt-bindings/thermal/mediatek,lvts-thermal.h>
 
+#include "../thermal_hwmon.h"
+
 #define LVTS_MONCTL0(__base)	(__base + 0x0000)
 #define LVTS_MONCTL1(__base)	(__base + 0x0004)
 #define LVTS_MONCTL2(__base)	(__base + 0x0008)
@@ -996,6 +998,9 @@ static int lvts_ctrl_start(struct device *dev, struct lvts_ctrl *lvts_ctrl)
 			return PTR_ERR(tz);
 		}
 
+		if (devm_thermal_add_hwmon_sysfs(dev, tz))
+			dev_warn(dev, "zone %d: Failed to add hwmon sysfs attributes\n", dt_id);
+
 		/*
 		 * The thermal zone pointer will be needed in the
 		 * interrupt handler, we store it in the sensor
-- 
2.41.0.162.gfafddb0af9-goog