[PATCH 3/7] thermal: mediatek: add calibration item

From: <michael.kao@mediatek.com>
To: =Zhang Rui <rui.zhang@intel.com>,
	=Eduardo Valentin <edubezval@gmail.com>,
	=Daniel Lezcano <daniel.lezcano@linaro.org>,
	=Rob Herring <robh+dt@kernel.org>,
	=Mark Rutland <mark.rutland@arm.com>,
	=Matthias Brugger <matthias.bgg@gmail.com>
Cc: <linux-pm@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<srv_heupstream@mediatek.com>,
	Michael Kao <michael.kao@mediatek.com>
Subject: [PATCH 3/7] thermal: mediatek: add calibration item
Date: Fri, 1 Feb 2019 15:38:09 +0800	[thread overview]
Message-ID: <1549006693-11659-4-git-send-email-michael.kao@mediatek.com> (raw)
In-Reply-To: <1549006693-11659-1-git-send-email-michael.kao@mediatek.com>

From: Michael Kao <michael.kao@mediatek.com>

Add calibration item in thermal_data to support
the project with different calibration coefficient.

Signed-off-by: Michael Kao <michael.kao@mediatek.com>
---
 drivers/thermal/mtk_thermal.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 07f8ad7..45c6587 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -105,6 +105,9 @@
 /* The number of sensing points per bank */
 #define MT8173_NUM_SENSORS_PER_ZONE	4
 
+/* The calibration coefficient of sensor  */
+#define MT8173_CALIBRATION	165
+
 /*
  * Layout of the fuses providing the calibration data
  * These macros could be used for MT8173, MT2701, and MT2712.
@@ -147,6 +150,9 @@ enum {
 /* The number of sensing points per bank */
 #define MT2701_NUM_SENSORS_PER_ZONE	3
 
+/* The calibration coefficient of sensor  */
+#define MT2701_CALIBRATION	165
+
 /* MT2712 thermal sensors */
 #define MT2712_TS1	0
 #define MT2712_TS2	1
@@ -162,12 +168,18 @@ enum {
 /* The number of sensing points per bank */
 #define MT2712_NUM_SENSORS_PER_ZONE	4
 
+/* The calibration coefficient of sensor  */
+#define MT2712_CALIBRATION	165
+
 #define MT7622_TEMP_AUXADC_CHANNEL	11
 #define MT7622_NUM_SENSORS		1
 #define MT7622_NUM_ZONES		1
 #define MT7622_NUM_SENSORS_PER_ZONE	1
 #define MT7622_TS1	0
 
+/* The calibration coefficient of sensor  */
+#define MT7622_CALIBRATION	165
+
 struct mtk_thermal;
 
 struct thermal_bank_cfg {
@@ -188,6 +200,7 @@ struct mtk_thermal_data {
 	const int *sensor_mux_values;
 	const int *msr;
 	const int *adcpnp;
+	const int cali_val;
 	struct thermal_bank_cfg bank_data[];
 };
 
@@ -295,6 +308,7 @@ struct mtk_thermal {
 	.num_banks = MT8173_NUM_ZONES,
 	.num_sensors = MT8173_NUM_SENSORS,
 	.vts_index = mt8173_vts_index,
+	.cali_val = MT8173_CALIBRATION,
 	.bank_data = {
 		{
 			.num_sensors = 2,
@@ -330,6 +344,7 @@ struct mtk_thermal {
 	.num_banks = 1,
 	.num_sensors = MT2701_NUM_SENSORS,
 	.vts_index = mt2701_vts_index,
+	.cali_val = MT2701_CALIBRATION,
 	.bank_data = {
 		{
 			.num_sensors = 3,
@@ -356,6 +371,7 @@ struct mtk_thermal {
 	.num_banks = 1,
 	.num_sensors = MT2712_NUM_SENSORS,
 	.vts_index = mt2712_vts_index,
+	.cali_val = MT2712_CALIBRATION,
 	.bank_data = {
 		{
 			.num_sensors = 4,
@@ -376,6 +392,7 @@ struct mtk_thermal {
 	.num_banks = MT7622_NUM_ZONES,
 	.num_sensors = MT7622_NUM_SENSORS,
 	.vts_index = mt7622_vts_index,
+	.cali_val = MT7622_CALIBRATION,
 	.bank_data = {
 		{
 			.num_sensors = 1,
@@ -402,7 +419,7 @@ static int raw_to_mcelsius(struct mtk_thermal *mt, int sensno, s32 raw)
 	raw &= 0xfff;
 
 	tmp = 203450520 << 3;
-	tmp /= 165 + mt->o_slope;
+	tmp /= mt->conf->cali_val + mt->o_slope;
 	tmp /= 10000 + mt->adc_ge;
 	tmp *= raw - mt->vts[sensno] - 3350;
 	tmp >>= 3;
-- 
1.9.1

