linux-kernel - [PATCH v4 05/11] thermal: sun8i: rework for sun8i_ths_get

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Message-Id: <20190623164206.7467-6-tiny.windzz@gmail.com>
Date:   Sun, 23 Jun 2019 12:42:00 -0400
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,
        davem@...emloft.net, gregkh@...uxfoundation.org,
        mchehab+samsung@...nel.org, linus.walleij@...aro.org,
        nicolas.ferre@...rochip.com, paulmck@...ux.ibm.com
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH v4 05/11] thermal: sun8i: rework for sun8i_ths_get_temp()

For different socs, the way they get and calculate the
temperature is roughly the same. So get the difference
from device compatible.

Difference point:
  1) temperature calculation formula parameters
  2) ths data register start address

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/thermal/sun8i_thermal.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index c37e1c51a543..e473a5651436 100644
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -22,9 +22,6 @@
 
 #define MAX_SENSOR_NUM	4
 
-#define SUN50I_H6_OFFSET	-2794
-#define SUN50I_H6_SCALE		-67
-
 #define FT_TEMP_MASK				GENMASK(11, 0)
 #define TEMP_CALIB_MASK				GENMASK(11, 0)
 #define TEMP_TO_REG				672
@@ -58,6 +55,10 @@ struct tsensor {
 
 struct ths_thermal_chip {
 	int		sensor_num;
+	int		offset;
+	int		scale;
+	int		ft_deviation;
+	int		temp_data_base;
 };
 
 struct ths_device {
@@ -73,7 +74,7 @@ struct ths_device {
 static int sun8i_ths_reg2temp(struct ths_device *tmdev,
 			      int reg)
 {
-	return (reg + SUN50I_H6_OFFSET) * SUN50I_H6_SCALE;
+	return (reg + tmdev->chip->offset) * tmdev->chip->scale;
 }
 
 static int sun8i_ths_get_temp(void *data, int *temp)
@@ -82,7 +83,7 @@ static int sun8i_ths_get_temp(void *data, int *temp)
 	struct ths_device *tmdev = s->tmdev;
 	int val;
 
-	regmap_read(tmdev->regmap, SUN50I_H6_THS_TEMP_DATA +
+	regmap_read(tmdev->regmap, tmdev->chip->temp_data_base +
 		    0x4 * s->id, &val);
 
 	/* ths have no data yet */
@@ -98,7 +99,7 @@ static int sun8i_ths_get_temp(void *data, int *temp)
 	 * temperature above is also used when the sensor is calibrated. If
 	 * do this, the correct calibration formula is hard to know.
 	 */
-	*temp += SUN50I_H6_FT_DEVIATION;
+	*temp += tmdev->chip->ft_deviation;
 
 	return 0;
 }
@@ -395,6 +396,10 @@ static int sun8i_ths_remove(struct platform_device *pdev)
 
 static const struct ths_thermal_chip sun50i_h6_ths = {
 	.sensor_num = 2,
+	.offset = -2794,
+	.scale = -67,
+	.ft_deviation = SUN50I_H6_FT_DEVIATION,
+	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
 };
 
 static const struct of_device_id of_ths_match[] = {
-- 
2.17.1