// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
#include <linux/bitfield.h>
#include <linux/nvmem-consumer.h>
#include <linux/platform_device.h>
#include "tsens.h"
/* ----- SROT ------ */
#define SROT_CTRL_OFF 0 x0000
/* ----- TM ------ */
#define TM_INT_EN_OFF 0 x0000
#define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0 x0004
#define TM_Sn_STATUS_OFF 0 x0030
#define TM_TRDY_OFF 0 x005c
/* extra data for 8974 */
#define BKP_SEL 0 x3
#define BKP_REDUN_SEL 0 xe0000000
#define BIT_APPEND 0 x3
static struct tsens_legacy_calibration_format tsens_8916_nvmem = {
.base_len = 7 ,
.base_shift = 3 ,
.sp_len = 5 ,
.mode = { 0 , 29 , 1 },
.invalid = { 0 , 31 , 1 },
.base = { { 0 , 0 }, { 1 , 25 } },
.sp = {
{ { 0 , 7 }, { 0 , 12 } },
{ { 0 , 17 }, { 0 , 22 } },
{ { 0 , 27 }, { 1 , 0 } },
{ { 1 , 5 }, { 1 , 10 } },
{ { 1 , 15 }, { 1 , 20 } },
},
};
static struct tsens_legacy_calibration_format tsens_8974_nvmem = {
.base_len = 8 ,
.base_shift = 2 ,
.sp_len = 6 ,
.mode = { 1 , 30 },
.invalid = { 3 , 30 },
.base = { { 0 , 0 }, { 2 , 12 } },
.sp = {
{ { 0 , 8 }, { 2 , 20 } },
{ { 0 , 14 }, { 2 , 26 } },
{ { 0 , 20 }, { 3 , 0 } },
{ { 0 , 26 }, { 3 , 6 } },
{ { 1 , 0 }, { 3 , 12 } },
{ { 1 , 6 }, { 3 , 18 } },
{ { 1 , 12 }, { 3 , 24 } },
{ { 1 , 18 }, { 4 , 0 } },
{ { 1 , 24 }, { 4 , 6 } },
{ { 2 , 0 }, { 4 , 12 } },
{ { 2 , 6 }, { 4 , 18 } },
},
};
static struct tsens_legacy_calibration_format tsens_8974_backup_nvmem = {
.base_len = 8 ,
.base_shift = 2 ,
.sp_len = 6 ,
.mode = { 4 , 30 , 1 },
.invalid = { 5 , 30 , 1 },
.base = { { 0 , 0 }, { 2 , 18 } },
.sp = {
{ { 0 , 8 }, { 2 , 26 } },
{ { 0 , 14 }, { 3 , 0 } },
{ { 0 , 20 }, { 3 , 6 } },
{ { 0 , 26 }, { 3 , 12 } },
{ { 1 , 0 }, { 3 , 18 } },
{ { 1 , 6 }, { 3 , 24 , 1 } },
{ { 1 , 12 }, { 4 , 0 , 1 } },
{ { 1 , 18 }, { 4 , 6 , 1 } },
{ { 2 , 0 }, { 4 , 12 , 1 } },
{ { 2 , 6 }, { 4 , 18 , 1 } },
{ { 2 , 12 }, { 4 , 24 , 1 } },
},
};
static int calibrate_8916(struct tsens_priv *priv)
{
u32 p1[5 ], p2[5 ];
u32 *qfprom_cdata, *qfprom_csel;
int mode, ret;
ret = tsens_calibrate_nvmem(priv, 3 );
if (!ret)
return 0 ;
qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib" );
if (IS_ERR(qfprom_cdata))
return PTR_ERR(qfprom_cdata);
qfprom_csel = (u32 *)qfprom_read(priv->dev, "calib_sel" );
if (IS_ERR(qfprom_csel)) {
kfree(qfprom_cdata);
return PTR_ERR(qfprom_csel);
}
mode = tsens_read_calibration_legacy(priv, &tsens_8916_nvmem,
p1, p2,
qfprom_cdata, qfprom_csel);
compute_intercept_slope(priv, p1, p2, mode);
kfree(qfprom_cdata);
kfree(qfprom_csel);
return 0 ;
}
static void fixup_8974_points(int mode, u32 *p1, u32 *p2)
{
int i;
if (mode == NO_PT_CALIB) {
p1[0 ] += 2 ;
p1[1 ] += 9 ;
p1[2 ] += 3 ;
p1[3 ] += 9 ;
p1[4 ] += 5 ;
p1[5 ] += 9 ;
p1[6 ] += 7 ;
p1[7 ] += 10 ;
p1[8 ] += 8 ;
p1[9 ] += 9 ;
p1[10 ] += 8 ;
} else {
for (i = 0 ; i < 11 ; i++) {
/*
* ONE_PT_CALIB requires using addition here instead of
* using OR operation.
*/
p1[i] += BIT_APPEND;
p2[i] += BIT_APPEND;
}
}
}
static int calibrate_8974_nvmem(struct tsens_priv *priv)
{
u32 p1[11 ], p2[11 ];
u32 backup;
int ret, mode;
ret = nvmem_cell_read_variable_le_u32(priv->dev, "use_backup" , &backup);
if (ret == -ENOENT)
dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n" );
if (ret < 0 )
return ret;
mode = tsens_read_calibration(priv, 2 , p1, p2, backup == BKP_SEL);
if (mode < 0 )
return mode;
fixup_8974_points(mode, p1, p2);
compute_intercept_slope(priv, p1, p2, mode);
return 0 ;
}
static int calibrate_8974(struct tsens_priv *priv)
{
u32 p1[11 ], p2[11 ];
u32 *calib, *bkp;
u32 calib_redun_sel;
int mode, ret;
ret = calibrate_8974_nvmem(priv);
if (ret == 0 )
return 0 ;
calib = (u32 *)qfprom_read(priv->dev, "calib" );
if (IS_ERR(calib))
return PTR_ERR(calib);
bkp = (u32 *)qfprom_read(priv->dev, "calib_backup" );
if (IS_ERR(bkp)) {
kfree(calib);
return PTR_ERR(bkp);
}
calib_redun_sel = FIELD_GET(BKP_REDUN_SEL, bkp[1 ]);
if (calib_redun_sel == BKP_SEL)
mode = tsens_read_calibration_legacy(priv, &tsens_8974_backup_nvmem,
p1, p2,
bkp, calib);
else
mode = tsens_read_calibration_legacy(priv, &tsens_8974_nvmem,
p1, p2,
calib, NULL);
fixup_8974_points(mode, p1, p2);
compute_intercept_slope(priv, p1, p2, mode);
kfree(calib);
kfree(bkp);
return 0 ;
}
static int __init init_8226(struct tsens_priv *priv)
{
priv->sensor[0 ].slope = 2901 ;
priv->sensor[1 ].slope = 2846 ;
priv->sensor[2 ].slope = 3038 ;
priv->sensor[3 ].slope = 2955 ;
priv->sensor[4 ].slope = 2901 ;
priv->sensor[5 ].slope = 2846 ;
return init_common(priv);
}
static int __init init_8909(struct tsens_priv *priv)
{
int i;
for (i = 0 ; i < priv->num_sensors; ++i)
priv->sensor[i].slope = 3000 ;
priv->sensor[0 ].p1_calib_offset = 0 ;
priv->sensor[0 ].p2_calib_offset = 0 ;
priv->sensor[1 ].p1_calib_offset = -10 ;
priv->sensor[1 ].p2_calib_offset = -6 ;
priv->sensor[2 ].p1_calib_offset = 0 ;
priv->sensor[2 ].p2_calib_offset = 0 ;
priv->sensor[3 ].p1_calib_offset = -9 ;
priv->sensor[3 ].p2_calib_offset = -9 ;
priv->sensor[4 ].p1_calib_offset = -8 ;
priv->sensor[4 ].p2_calib_offset = -10 ;
return init_common(priv);
}
static int __init init_8939(struct tsens_priv *priv) {
priv->sensor[0 ].slope = 2911 ;
priv->sensor[1 ].slope = 2789 ;
priv->sensor[2 ].slope = 2906 ;
priv->sensor[3 ].slope = 2763 ;
priv->sensor[4 ].slope = 2922 ;
priv->sensor[5 ].slope = 2867 ;
priv->sensor[6 ].slope = 2833 ;
priv->sensor[7 ].slope = 2838 ;
priv->sensor[8 ].slope = 2840 ;
/* priv->sensor[9].slope = 2852; */
return init_common(priv);
}
static int __init init_9607(struct tsens_priv *priv)
{
int i;
for (i = 0 ; i < priv->num_sensors; ++i)
priv->sensor[i].slope = 3000 ;
priv->sensor[0 ].p1_calib_offset = 1 ;
priv->sensor[0 ].p2_calib_offset = 1 ;
priv->sensor[1 ].p1_calib_offset = -4 ;
priv->sensor[1 ].p2_calib_offset = -2 ;
priv->sensor[2 ].p1_calib_offset = 4 ;
priv->sensor[2 ].p2_calib_offset = 8 ;
priv->sensor[3 ].p1_calib_offset = -3 ;
priv->sensor[3 ].p2_calib_offset = -5 ;
priv->sensor[4 ].p1_calib_offset = -4 ;
priv->sensor[4 ].p2_calib_offset = -4 ;
return init_common(priv);
}
/* v0.1: 8226, 8909, 8916, 8939, 8974, 9607 */
static struct tsens_features tsens_v0_1_feat = {
.ver_major = VER_0_1,
.crit_int = 0 ,
.combo_int = 0 ,
.adc = 1 ,
.srot_split = 1 ,
.max_sensors = 11 ,
.trip_min_temp = -40000 ,
.trip_max_temp = 120000 ,
};
static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {
/* ----- SROT ------ */
/* No VERSION information */
/* CTRL_OFFSET */
[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0 , 0 ),
[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1 , 1 ),
/* ----- TM ------ */
/* INTERRUPT ENABLE */
[INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0 , 0 ),
/* UPPER/LOWER TEMPERATURE THRESHOLDS */
REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0 , 9 ),
REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10 , 19 ),
/* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */
REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20 , 20 ),
REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21 , 21 ),
/* NO CRITICAL INTERRUPT SUPPORT on v0.1 */
/* Sn_STATUS */
REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0 , 9 ),
/* No VALID field on v0.1 */
/* xxx_STATUS bits: 1 == threshold violated */
REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10 , 10 ),
REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11 , 11 ),
REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12 , 12 ),
/* No CRITICAL field on v0.1 */
REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13 , 13 ),
/* TRDY: 1=ready, 0=in progress */
[TRDY] = REG_FIELD(TM_TRDY_OFF, 0 , 0 ),
};
static const struct tsens_ops ops_8226 = {
.init = init_8226,
.calibrate = tsens_calibrate_common,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_8226 = {
.num_sensors = 6 ,
.ops = &ops_8226,
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
static const struct tsens_ops ops_8909 = {
.init = init_8909,
.calibrate = tsens_calibrate_common,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_8909 = {
.num_sensors = 5 ,
.ops = &ops_8909,
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
static const struct tsens_ops ops_8916 = {
.init = init_common,
.calibrate = calibrate_8916,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_8916 = {
.num_sensors = 5 ,
.ops = &ops_8916,
.hw_ids = (unsigned int []){0 , 1 , 2 , 4 , 5 },
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
static const struct tsens_ops ops_8939 = {
.init = init_8939,
.calibrate = tsens_calibrate_common,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_8939 = {
.num_sensors = 9 ,
.ops = &ops_8939,
.hw_ids = (unsigned int []){ 0 , 1 , 2 , 3 , 5 , 6 , 7 , 8 , 9 , /* 10 */ },
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
static const struct tsens_ops ops_8974 = {
.init = init_common,
.calibrate = calibrate_8974,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_8974 = {
.num_sensors = 11 ,
.ops = &ops_8974,
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
static const struct tsens_ops ops_9607 = {
.init = init_9607,
.calibrate = tsens_calibrate_common,
.get_temp = get_temp_common,
};
struct tsens_plat_data data_9607 = {
.num_sensors = 5 ,
.ops = &ops_9607,
.feat = &tsens_v0_1_feat,
.fields = tsens_v0_1_regfields,
};
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-08)
¤
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