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thermal: qcom: tsens-v0_1: Add support for MSM8939
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The TSENS integrated on MSM8939 is a v0_1 device with 10 sensors.
Different from its predecessor MSM8916, where 'calib_sel' bits sit in
separate qfprom word, MSM8939 has 'cailb' and 'calib_sel' bits mixed and
spread on discrete offsets.  That's why all qfprom bits are read as one
go and later mapped to calibration data for MSM8939.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Konrad Dybcio <konradybcio@gmail.com> /* on Asus Z00T smartphone */
Acked-by: Konrad Dybcio <konradybcio@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200629144926.665-3-shawn.guo@linaro.org
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Shawn Guo authored and Daniel Lezcano committed Jul 27, 2020
1 parent ec99756 commit 332bc8e
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Showing 3 changed files with 147 additions and 2 deletions.
144 changes: 143 additions & 1 deletion drivers/thermal/qcom/tsens-v0_1.c
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,63 @@
#define MSM8916_CAL_SEL_MASK 0xe0000000
#define MSM8916_CAL_SEL_SHIFT 29

/* eeprom layout data for 8939 */
#define MSM8939_BASE0_MASK 0x000000ff
#define MSM8939_BASE1_MASK 0xff000000
#define MSM8939_BASE0_SHIFT 0
#define MSM8939_BASE1_SHIFT 24

#define MSM8939_S0_P1_MASK 0x000001f8
#define MSM8939_S1_P1_MASK 0x001f8000
#define MSM8939_S2_P1_MASK_0_4 0xf8000000
#define MSM8939_S2_P1_MASK_5 0x00000001
#define MSM8939_S3_P1_MASK 0x00001f80
#define MSM8939_S4_P1_MASK 0x01f80000
#define MSM8939_S5_P1_MASK 0x00003f00
#define MSM8939_S6_P1_MASK 0x03f00000
#define MSM8939_S7_P1_MASK 0x0000003f
#define MSM8939_S8_P1_MASK 0x0003f000
#define MSM8939_S9_P1_MASK 0x07e00000

#define MSM8939_S0_P2_MASK 0x00007e00
#define MSM8939_S1_P2_MASK 0x07e00000
#define MSM8939_S2_P2_MASK 0x0000007e
#define MSM8939_S3_P2_MASK 0x0007e000
#define MSM8939_S4_P2_MASK 0x7e000000
#define MSM8939_S5_P2_MASK 0x000fc000
#define MSM8939_S6_P2_MASK 0xfc000000
#define MSM8939_S7_P2_MASK 0x00000fc0
#define MSM8939_S8_P2_MASK 0x00fc0000
#define MSM8939_S9_P2_MASK_0_4 0xf8000000
#define MSM8939_S9_P2_MASK_5 0x00002000

#define MSM8939_S0_P1_SHIFT 3
#define MSM8939_S1_P1_SHIFT 15
#define MSM8939_S2_P1_SHIFT_0_4 27
#define MSM8939_S2_P1_SHIFT_5 0
#define MSM8939_S3_P1_SHIFT 7
#define MSM8939_S4_P1_SHIFT 19
#define MSM8939_S5_P1_SHIFT 8
#define MSM8939_S6_P1_SHIFT 20
#define MSM8939_S7_P1_SHIFT 0
#define MSM8939_S8_P1_SHIFT 12
#define MSM8939_S9_P1_SHIFT 21

#define MSM8939_S0_P2_SHIFT 9
#define MSM8939_S1_P2_SHIFT 21
#define MSM8939_S2_P2_SHIFT 1
#define MSM8939_S3_P2_SHIFT 13
#define MSM8939_S4_P2_SHIFT 25
#define MSM8939_S5_P2_SHIFT 14
#define MSM8939_S6_P2_SHIFT 26
#define MSM8939_S7_P2_SHIFT 6
#define MSM8939_S8_P2_SHIFT 18
#define MSM8939_S9_P2_SHIFT_0_4 27
#define MSM8939_S9_P2_SHIFT_5 13

#define MSM8939_CAL_SEL_MASK 0x7
#define MSM8939_CAL_SEL_SHIFT 0

/* eeprom layout data for 8974 */
#define BASE1_MASK 0xff
#define S0_P1_MASK 0x3f00
Expand Down Expand Up @@ -189,6 +246,76 @@ static int calibrate_8916(struct tsens_priv *priv)
return 0;
}

static int calibrate_8939(struct tsens_priv *priv)
{
int base0 = 0, base1 = 0, i;
u32 p1[10], p2[10];
int mode = 0;
u32 *qfprom_cdata;
u32 cdata[6];

qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
if (IS_ERR(qfprom_cdata))
return PTR_ERR(qfprom_cdata);

/* Mapping between qfprom nvmem and calibration data */
cdata[0] = qfprom_cdata[12];
cdata[1] = qfprom_cdata[13];
cdata[2] = qfprom_cdata[0];
cdata[3] = qfprom_cdata[1];
cdata[4] = qfprom_cdata[22];
cdata[5] = qfprom_cdata[21];

mode = (cdata[0] & MSM8939_CAL_SEL_MASK) >> MSM8939_CAL_SEL_SHIFT;
dev_dbg(priv->dev, "calibration mode is %d\n", mode);

switch (mode) {
case TWO_PT_CALIB:
base1 = (cdata[3] & MSM8939_BASE1_MASK) >> MSM8939_BASE1_SHIFT;
p2[0] = (cdata[0] & MSM8939_S0_P2_MASK) >> MSM8939_S0_P2_SHIFT;
p2[1] = (cdata[0] & MSM8939_S1_P2_MASK) >> MSM8939_S1_P2_SHIFT;
p2[2] = (cdata[1] & MSM8939_S2_P2_MASK) >> MSM8939_S2_P2_SHIFT;
p2[3] = (cdata[1] & MSM8939_S3_P2_MASK) >> MSM8939_S3_P2_SHIFT;
p2[4] = (cdata[1] & MSM8939_S4_P2_MASK) >> MSM8939_S4_P2_SHIFT;
p2[5] = (cdata[2] & MSM8939_S5_P2_MASK) >> MSM8939_S5_P2_SHIFT;
p2[6] = (cdata[2] & MSM8939_S6_P2_MASK) >> MSM8939_S6_P2_SHIFT;
p2[7] = (cdata[3] & MSM8939_S7_P2_MASK) >> MSM8939_S7_P2_SHIFT;
p2[8] = (cdata[3] & MSM8939_S8_P2_MASK) >> MSM8939_S8_P2_SHIFT;
p2[9] = (cdata[4] & MSM8939_S9_P2_MASK_0_4) >> MSM8939_S9_P2_SHIFT_0_4;
p2[9] |= ((cdata[5] & MSM8939_S9_P2_MASK_5) >> MSM8939_S9_P2_SHIFT_5) << 5;
for (i = 0; i < priv->num_sensors; i++)
p2[i] = (base1 + p2[i]) << 2;
fallthrough;
case ONE_PT_CALIB2:
base0 = (cdata[2] & MSM8939_BASE0_MASK) >> MSM8939_BASE0_SHIFT;
p1[0] = (cdata[0] & MSM8939_S0_P1_MASK) >> MSM8939_S0_P1_SHIFT;
p1[1] = (cdata[0] & MSM8939_S1_P1_MASK) >> MSM8939_S1_P1_SHIFT;
p1[2] = (cdata[0] & MSM8939_S2_P1_MASK_0_4) >> MSM8939_S2_P1_SHIFT_0_4;
p1[2] |= ((cdata[1] & MSM8939_S2_P1_MASK_5) >> MSM8939_S2_P1_SHIFT_5) << 5;
p1[3] = (cdata[1] & MSM8939_S3_P1_MASK) >> MSM8939_S3_P1_SHIFT;
p1[4] = (cdata[1] & MSM8939_S4_P1_MASK) >> MSM8939_S4_P1_SHIFT;
p1[5] = (cdata[2] & MSM8939_S5_P1_MASK) >> MSM8939_S5_P1_SHIFT;
p1[6] = (cdata[2] & MSM8939_S6_P1_MASK) >> MSM8939_S6_P1_SHIFT;
p1[7] = (cdata[3] & MSM8939_S7_P1_MASK) >> MSM8939_S7_P1_SHIFT;
p1[8] = (cdata[3] & MSM8939_S8_P1_MASK) >> MSM8939_S8_P1_SHIFT;
p1[9] = (cdata[4] & MSM8939_S9_P1_MASK) >> MSM8939_S9_P1_SHIFT;
for (i = 0; i < priv->num_sensors; i++)
p1[i] = ((base0) + p1[i]) << 2;
break;
default:
for (i = 0; i < priv->num_sensors; i++) {
p1[i] = 500;
p2[i] = 780;
}
break;
}

compute_intercept_slope(priv, p1, p2, mode);
kfree(qfprom_cdata);

return 0;
}

static int calibrate_8974(struct tsens_priv *priv)
{
int base1 = 0, base2 = 0, i;
Expand Down Expand Up @@ -325,7 +452,7 @@ static int calibrate_8974(struct tsens_priv *priv)
return 0;
}

/* v0.1: 8916, 8974 */
/* v0.1: 8916, 8939, 8974 */

static struct tsens_features tsens_v0_1_feat = {
.ver_major = VER_0_1,
Expand Down Expand Up @@ -386,6 +513,21 @@ struct tsens_plat_data data_8916 = {
.fields = tsens_v0_1_regfields,
};

static const struct tsens_ops ops_8939 = {
.init = init_common,
.calibrate = calibrate_8939,
.get_temp = get_temp_common,
};

struct tsens_plat_data data_8939 = {
.num_sensors = 10,
.ops = &ops_8939,
.hw_ids = (unsigned int []){ 0, 1, 2, 4, 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,
Expand Down
3 changes: 3 additions & 0 deletions drivers/thermal/qcom/tsens.c
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Original file line number Diff line number Diff line change
Expand Up @@ -897,6 +897,9 @@ static const struct of_device_id tsens_table[] = {
{
.compatible = "qcom,msm8916-tsens",
.data = &data_8916,
}, {
.compatible = "qcom,msm8939-tsens",
.data = &data_8939,
}, {
.compatible = "qcom,msm8974-tsens",
.data = &data_8974,
Expand Down
2 changes: 1 addition & 1 deletion drivers/thermal/qcom/tsens.h
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Original file line number Diff line number Diff line change
Expand Up @@ -585,7 +585,7 @@ int get_temp_common(const struct tsens_sensor *s, int *temp);
extern struct tsens_plat_data data_8960;

/* TSENS v0.1 targets */
extern struct tsens_plat_data data_8916, data_8974;
extern struct tsens_plat_data data_8916, data_8939, data_8974;

/* TSENS v1 targets */
extern struct tsens_plat_data data_tsens_v1, data_8976;
Expand Down

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