thermal/drivers/tegra/soctherm-fuse: Prepare calibration for Tegra114 support

The Tegra114 has a different fuse calibration register layout and address
compared to other Tegra SoCs, requiring SOCTHERM shift, mask, register
address, and nominal tf calibration value to be configurable.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://lore.kernel.org/r/20250828055104.8073-4-clamor95@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Author: clamor-s

drivers/thermal/tegra/soctherm-fuse.c

@@ -9,15 +9,12 @@
 
 #include "soctherm.h"
 
-#define NOMINAL_CALIB_FT			105
 #define NOMINAL_CALIB_CP			25
 
 #define FUSE_TSENSOR_CALIB_CP_TS_BASE_MASK	0x1fff
 #define FUSE_TSENSOR_CALIB_FT_TS_BASE_MASK	(0x1fff << 13)
 #define FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT	13
 
-#define FUSE_TSENSOR_COMMON			0x180
-
 /*
  * Tegra210: Layout of bits in FUSE_TSENSOR_COMMON:
  *    3                   2                   1                   0
@@ -26,7 +23,7 @@
  * |       BASE_FT       |      BASE_CP      | SHFT_FT | SHIFT_CP  |
  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  *
- * Tegra12x, etc:
+ * Tegra124:
  * In chips prior to Tegra210, this fuse was incorrectly sized as 26 bits,
  * and didn't hold SHIFT_CP in [31:26]. Therefore these missing six bits
  * were obtained via the FUSE_SPARE_REALIGNMENT_REG register [5:0].
@@ -44,6 +41,13 @@
  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  * |---------------------------------------------------| SHIFT_CP  |
  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Tegra114: Layout of bits in FUSE_TSENSOR_COMMON aka FUSE_VSENSOR_CALIB:
+ *    3                   2                   1                   0
+ *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | SHFT_FT |       BASE_FT       | SHIFT_CP  |      BASE_CP      |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  */
 
 #define CALIB_COEFFICIENT 1000000LL
@@ -77,7 +81,7 @@ int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse,
 	s32 shifted_cp, shifted_ft;
 	int err;
 
-	err = tegra_fuse_readl(FUSE_TSENSOR_COMMON, &val);
+	err = tegra_fuse_readl(tfuse->fuse_common_reg, &val);
 	if (err)
 		return err;
 
@@ -96,10 +100,12 @@ int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse,
 			return err;
 	}
 
+	shifted_cp = (val & tfuse->fuse_shift_cp_mask) >>
+		     tfuse->fuse_shift_cp_shift;
 	shifted_cp = sign_extend32(val, 5);
 
 	shared->actual_temp_cp = 2 * NOMINAL_CALIB_CP + shifted_cp;
-	shared->actual_temp_ft = 2 * NOMINAL_CALIB_FT + shifted_ft;
+	shared->actual_temp_ft = 2 * tfuse->nominal_calib_ft + shifted_ft;
 
 	return 0;
 }

drivers/thermal/tegra/soctherm.h

@@ -56,6 +56,9 @@
 #define SENSOR_TEMP2_MEM_TEMP_MASK		(0xffff << 16)
 #define SENSOR_TEMP2_PLLX_TEMP_MASK		0xffff
 
+#define FUSE_VSENSOR_CALIB			0x08c
+#define FUSE_TSENSOR_COMMON			0x180
+
 /**
  * struct tegra_tsensor_group - SOC_THERM sensor group data
  * @name: short name of the temperature sensor group
@@ -109,9 +112,11 @@ struct tsensor_group_thermtrips {
 
 struct tegra_soctherm_fuse {
 	u32 fuse_base_cp_mask, fuse_base_cp_shift;
+	u32 fuse_shift_cp_mask, fuse_shift_cp_shift;
 	u32 fuse_base_ft_mask, fuse_base_ft_shift;
 	u32 fuse_shift_ft_mask, fuse_shift_ft_shift;
-	u32 fuse_spare_realignment;
+	u32 fuse_common_reg, fuse_spare_realignment;
+	u32 nominal_calib_ft;
 };
 
 struct tsensor_shared_calib {

drivers/thermal/tegra/tegra124-soctherm.c

@@ -200,11 +200,15 @@ static const struct tegra_tsensor tegra124_tsensors[] = {
 static const struct tegra_soctherm_fuse tegra124_soctherm_fuse = {
 	.fuse_base_cp_mask = 0x3ff,
 	.fuse_base_cp_shift = 0,
+	.fuse_shift_cp_mask = 0x3f,
+	.fuse_shift_cp_shift = 0,
 	.fuse_base_ft_mask = 0x7ff << 10,
 	.fuse_base_ft_shift = 10,
 	.fuse_shift_ft_mask = 0x1f << 21,
 	.fuse_shift_ft_shift = 21,
+	.fuse_common_reg = FUSE_TSENSOR_COMMON,
 	.fuse_spare_realignment = 0x1fc,
+	.nominal_calib_ft = 105,
 };
 
 const struct tegra_soctherm_soc tegra124_soctherm = {

drivers/thermal/tegra/tegra132-soctherm.c

@@ -200,11 +200,15 @@ static struct tegra_tsensor tegra132_tsensors[] = {
 static const struct tegra_soctherm_fuse tegra132_soctherm_fuse = {
 	.fuse_base_cp_mask = 0x3ff,
 	.fuse_base_cp_shift = 0,
+	.fuse_shift_cp_mask = 0x3f,
+	.fuse_shift_cp_shift = 0,
 	.fuse_base_ft_mask = 0x7ff << 10,
 	.fuse_base_ft_shift = 10,
 	.fuse_shift_ft_mask = 0x1f << 21,
 	.fuse_shift_ft_shift = 21,
+	.fuse_common_reg = FUSE_TSENSOR_COMMON,
 	.fuse_spare_realignment = 0x1fc,
+	.nominal_calib_ft = 105,
 };
 
 const struct tegra_soctherm_soc tegra132_soctherm = {

drivers/thermal/tegra/tegra210-soctherm.c

@@ -201,11 +201,15 @@ static const struct tegra_tsensor tegra210_tsensors[] = {
 static const struct tegra_soctherm_fuse tegra210_soctherm_fuse = {
 	.fuse_base_cp_mask = 0x3ff << 11,
 	.fuse_base_cp_shift = 11,
+	.fuse_shift_cp_mask = 0x3f,
+	.fuse_shift_cp_shift = 0,
 	.fuse_base_ft_mask = 0x7ff << 21,
 	.fuse_base_ft_shift = 21,
 	.fuse_shift_ft_mask = 0x1f << 6,
 	.fuse_shift_ft_shift = 6,
+	.fuse_common_reg = FUSE_TSENSOR_COMMON,
 	.fuse_spare_realignment = 0,
+	.nominal_calib_ft = 105,
 };
 
 static struct tsensor_group_thermtrips tegra210_tsensor_thermtrips[] = {