linux-kernel - [PATCH v5 16/18] thermal: sun8i: add support for Allwinner H5 thermal sensor

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Date:   Sat, 10 Aug 2019 05:28:27 +0000
From:   Yangtao Li <tiny.windzz@...il.com>
To:     rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, maxime.ripard@...tlin.com, wens@...e.org,
        mchehab+samsung@...nel.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, Jonathan.Cameron@...wei.com,
        nicolas.ferre@...rochip.com
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH v5 16/18] thermal: sun8i: add support for Allwinner H5 thermal sensor

From: Icenowy Zheng <icenowy@...c.io>

The thermal sensor in Allwinner H5 has 2 sensors, and they have a
special segmented temperature calculation formula.

Add support for this thermal sensor.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
---
 drivers/thermal/sun8i_thermal.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index a761e2afda08..78a888d85cba 100644
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -99,6 +99,16 @@ static int sun8i_ths_reg2temp(struct ths_device *tmdev,
 		return (reg + tmdev->chip->offset) * tmdev->chip->scale;
 }
 
+static int sun50i_h5_calc_temp(int id, int reg)
+{
+	if (reg >= 0x500)
+		return -1191 * reg / 10 + 223000;
+	else if (!id)
+		return -1452 * reg / 10 + 259000;
+	else
+		return -1590 * reg / 10 + 276000;
+}
+
 static int sun8i_ths_get_temp(void *data, int *temp)
 {
 	struct tsensor *s = data;
@@ -530,6 +540,16 @@ static const struct ths_thermal_chip sun50i_a64_ths = {
 	.irq_ack = sun8i_h3_irq_ack,
 };
 
+static const struct ths_thermal_chip sun50i_h5_ths = {
+	.sensor_num = 2,
+	.has_mod_clk = true,
+	.temp_data_base = SUN8I_THS_TEMP_DATA,
+	.calibrate = sun8i_h3_ths_calibrate,
+	.init = sun8i_h3_thermal_init,
+	.irq_ack = sun8i_h3_irq_ack,
+	.calc_temp = sun50i_h5_calc_temp,
+};
+
 static const struct ths_thermal_chip sun50i_h6_ths = {
 	.sensor_num = 2,
 	.offset = -2794,
@@ -544,6 +564,7 @@ static const struct ths_thermal_chip sun50i_h6_ths = {
 static const struct of_device_id of_ths_match[] = {
 	{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
 	{ .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths },
+	{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
 	{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
 	{ /* sentinel */ },
 };
-- 
2.17.1