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thermal: mediatek: Prepare to add support for other platforms 

It is known that Mediatek owns two thermal systems, which only differ
in the way of reading calibration data and converting temperature.
MT8173, MT8183, MT2701 and MT2712 belongs to version 1 thermal
system, and MT7622 belongs to version 2.

In order to handle both systems, the suffix _V1 is appended to the
current code, and then the second patch will add _V2 functions with
the same purpose but different implementation.

Signed-off-by: Henry Yen <henry.yen@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Tested-By: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1588238074-19338-2-git-send-email-henry.yen@mediatek.com
This commit is contained in:
Henry Yen 2020-04-30 17:14:33 +08:00 committed by Daniel Lezcano
parent 0de967f24e
commit 54bf1e5a62
1 changed files with 62 additions and 52 deletions
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114
drivers/thermal/mtk_thermal.c
View File

@ -120,18 +120,18 @@
* MT2701 has 3 sensors and needs 3 VTS calibration data. * MT2701 has 3 sensors and needs 3 VTS calibration data.
* MT2712 has 4 sensors and needs 4 VTS calibration data. * MT2712 has 4 sensors and needs 4 VTS calibration data.
*/ */
#define CALIB_BUF0_VALID BIT(0) #define CALIB_BUF0_VALID_V1 BIT(0)
#define CALIB_BUF1_ADC_GE(x) (((x) >> 22) & 0x3ff) #define CALIB_BUF1_ADC_GE_V1(x) (((x) >> 22) & 0x3ff)
#define CALIB_BUF0_VTS_TS1(x) (((x) >> 17) & 0x1ff) #define CALIB_BUF0_VTS_TS1_V1(x) (((x) >> 17) & 0x1ff)
#define CALIB_BUF0_VTS_TS2(x) (((x) >> 8) & 0x1ff) #define CALIB_BUF0_VTS_TS2_V1(x) (((x) >> 8) & 0x1ff)
#define CALIB_BUF1_VTS_TS3(x) (((x) >> 0) & 0x1ff) #define CALIB_BUF1_VTS_TS3_V1(x) (((x) >> 0) & 0x1ff)
#define CALIB_BUF2_VTS_TS4(x) (((x) >> 23) & 0x1ff) #define CALIB_BUF2_VTS_TS4_V1(x) (((x) >> 23) & 0x1ff)
#define CALIB_BUF2_VTS_TS5(x) (((x) >> 5) & 0x1ff) #define CALIB_BUF2_VTS_TS5_V1(x) (((x) >> 5) & 0x1ff)
#define CALIB_BUF2_VTS_TSABB(x) (((x) >> 14) & 0x1ff) #define CALIB_BUF2_VTS_TSABB_V1(x) (((x) >> 14) & 0x1ff)
#define CALIB_BUF0_DEGC_CALI(x) (((x) >> 1) & 0x3f) #define CALIB_BUF0_DEGC_CALI_V1(x) (((x) >> 1) & 0x3f)
#define CALIB_BUF0_O_SLOPE(x) (((x) >> 26) & 0x3f) #define CALIB_BUF0_O_SLOPE_V1(x) (((x) >> 26) & 0x3f)
#define CALIB_BUF0_O_SLOPE_SIGN(x) (((x) >> 7) & 0x1) #define CALIB_BUF0_O_SLOPE_SIGN_V1(x) (((x) >> 7) & 0x1)
#define CALIB_BUF1_ID(x) (((x) >> 9) & 0x1) #define CALIB_BUF1_ID_V1(x) (((x) >> 9) & 0x1)
enum { enum {
VTS1, VTS1,
@ -525,7 +525,7 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
* This converts the raw ADC value to mcelsius using the SoC specific * This converts the raw ADC value to mcelsius using the SoC specific
* calibration constants * calibration constants
*/ */
static int raw_to_mcelsius(struct mtk_thermal *mt, int sensno, s32 raw) static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
{ {
s32 tmp; s32 tmp;
@ -594,9 +594,9 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
raw = readl(mt->thermal_base + raw = readl(mt->thermal_base +
conf->msr[conf->bank_data[bank->id].sensors[i]]); conf->msr[conf->bank_data[bank->id].sensors[i]]);
temp = raw_to_mcelsius(mt, temp = raw_to_mcelsius_v1(mt,
conf->bank_data[bank->id].sensors[i], conf->bank_data[bank->id].sensors[i],
raw); raw);
/* /*
* The first read of a sensor often contains very high bogus * The first read of a sensor often contains very high bogus
@ -758,6 +758,51 @@ static u64 of_get_phys_base(struct device_node *np)
return of_translate_address(np, regaddr_p); return of_translate_address(np, regaddr_p);
} }
static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
{
int i;
if (!(buf[0] & CALIB_BUF0_VALID_V1))
return -EINVAL;
mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
for (i = 0; i < mt->conf->num_sensors; i++) {
switch (mt->conf->vts_index[i]) {
case VTS1:
mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
break;
case VTS2:
mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
break;
case VTS3:
mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
break;
case VTS4:
mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
break;
case VTS5:
mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
break;
case VTSABB:
mt->vts[VTSABB] =
CALIB_BUF2_VTS_TSABB_V1(buf[2]);
break;
default:
break;
}
}
mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
if (CALIB_BUF1_ID_V1(buf[1]) &
CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
else
mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
return 0;
}
static int mtk_thermal_get_calibration_data(struct device *dev, static int mtk_thermal_get_calibration_data(struct device *dev,
struct mtk_thermal *mt) struct mtk_thermal *mt)
{ {
@ -793,43 +838,8 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
goto out; goto out;
} }
if (buf[0] & CALIB_BUF0_VALID) { if (mtk_thermal_extract_efuse_v1(mt, buf))
mt->adc_ge = CALIB_BUF1_ADC_GE(buf[1]);
for (i = 0; i < mt->conf->num_sensors; i++) {
switch (mt->conf->vts_index[i]) {
case VTS1:
mt->vts[VTS1] = CALIB_BUF0_VTS_TS1(buf[0]);
break;
case VTS2:
mt->vts[VTS2] = CALIB_BUF0_VTS_TS2(buf[0]);
break;
case VTS3:
mt->vts[VTS3] = CALIB_BUF1_VTS_TS3(buf[1]);
break;
case VTS4:
mt->vts[VTS4] = CALIB_BUF2_VTS_TS4(buf[2]);
break;
case VTS5:
mt->vts[VTS5] = CALIB_BUF2_VTS_TS5(buf[2]);
break;
case VTSABB:
mt->vts[VTSABB] = CALIB_BUF2_VTS_TSABB(buf[2]);
break;
default:
break;
}
}
mt->degc_cali = CALIB_BUF0_DEGC_CALI(buf[0]);
if (CALIB_BUF1_ID(buf[1]) &
CALIB_BUF0_O_SLOPE_SIGN(buf[0]))
mt->o_slope = -CALIB_BUF0_O_SLOPE(buf[0]);
else
mt->o_slope = CALIB_BUF0_O_SLOPE(buf[0]);
} else {
dev_info(dev, "Device not calibrated, using default calibration values\n"); dev_info(dev, "Device not calibrated, using default calibration values\n");
}
out: out:
kfree(buf); kfree(buf);