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thermal: mediatek: Add tsensor support for V2 thermal system
This patch adds full support for ver 2 thermal system (e.g., MT7622 SoC).
The new changes include reading calibration data, converting temperature
and hardware initialization which are specific for version 2 system.
Each platform decides which function to call according to its version.
Fixes: 3966be3c08 ("thermal: mediatek: add support for MT7622 SoC")
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/1588238074-19338-3-git-send-email-henry.yen@mediatek.com
This commit is contained in:
Henry Yen
Daniel Lezcano
parent
54bf1e5a62
commit
89945047b1
@ -38,6 +38,7 @@
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#define TEMP_MONIDET0 0x014
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#define TEMP_MONIDET1 0x018
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#define TEMP_MSRCTL0 0x038
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#define TEMP_MSRCTL1 0x03c
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#define TEMP_AHBPOLL 0x040
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#define TEMP_AHBTO 0x044
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#define TEMP_ADCPNP0 0x048
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@ -133,6 +134,20 @@
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#define CALIB_BUF0_O_SLOPE_SIGN_V1(x) (((x) >> 7) & 0x1)
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#define CALIB_BUF1_ID_V1(x) (((x) >> 9) & 0x1)
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/*
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* Layout of the fuses providing the calibration data
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* These macros could be used for MT7622.
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*/
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#define CALIB_BUF0_ADC_OE_V2(x) (((x) >> 22) & 0x3ff)
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#define CALIB_BUF0_ADC_GE_V2(x) (((x) >> 12) & 0x3ff)
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#define CALIB_BUF0_DEGC_CALI_V2(x) (((x) >> 6) & 0x3f)
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#define CALIB_BUF0_O_SLOPE_V2(x) (((x) >> 0) & 0x3f)
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#define CALIB_BUF1_VTS_TS1_V2(x) (((x) >> 23) & 0x1ff)
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#define CALIB_BUF1_VTS_TS2_V2(x) (((x) >> 14) & 0x1ff)
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#define CALIB_BUF1_VTS_TSABB_V2(x) (((x) >> 5) & 0x1ff)
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#define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
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#define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
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enum {
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VTS1,
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VTS2,
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@ -143,6 +158,11 @@ enum {
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MAX_NUM_VTS,
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};
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enum mtk_thermal_version {
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MTK_THERMAL_V1 = 1,
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MTK_THERMAL_V2,
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};
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/* MT2701 thermal sensors */
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#define MT2701_TS1 0
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#define MT2701_TS2 1
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@ -245,6 +265,7 @@ struct mtk_thermal_data {
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const int *controller_offset;
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bool need_switch_bank;
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struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
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enum mtk_thermal_version version;
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};
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struct mtk_thermal {
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@ -258,8 +279,10 @@ struct mtk_thermal {
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/* Calibration values */
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s32 adc_ge;
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s32 adc_oe;
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s32 degc_cali;
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s32 o_slope;
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s32 o_slope_sign;
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s32 vts[MAX_NUM_VTS];
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const struct mtk_thermal_data *conf;
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@ -398,6 +421,7 @@ static const struct mtk_thermal_data mt8173_thermal_data = {
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.msr = mt8173_msr,
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.adcpnp = mt8173_adcpnp,
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.sensor_mux_values = mt8173_mux_values,
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.version = MTK_THERMAL_V1,
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};
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/*
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@ -428,6 +452,7 @@ static const struct mtk_thermal_data mt2701_thermal_data = {
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.msr = mt2701_msr,
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.adcpnp = mt2701_adcpnp,
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.sensor_mux_values = mt2701_mux_values,
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.version = MTK_THERMAL_V1,
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};
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/*
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@ -458,6 +483,7 @@ static const struct mtk_thermal_data mt2712_thermal_data = {
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.msr = mt2712_msr,
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.adcpnp = mt2712_adcpnp,
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.sensor_mux_values = mt2712_mux_values,
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.version = MTK_THERMAL_V1,
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};
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/*
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@ -482,6 +508,7 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
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.msr = mt7622_msr,
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.adcpnp = mt7622_adcpnp,
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.sensor_mux_values = mt7622_mux_values,
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.version = MTK_THERMAL_V2,
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};
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/*
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@ -514,6 +541,7 @@ static const struct mtk_thermal_data mt8183_thermal_data = {
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.msr = mt8183_msr,
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.adcpnp = mt8183_adcpnp,
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.sensor_mux_values = mt8183_mux_values,
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.version = MTK_THERMAL_V1,
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};
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/**
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@ -540,6 +568,36 @@ static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
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return mt->degc_cali * 500 - tmp;
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}
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static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
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{
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s32 format_1 = 0;
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s32 format_2 = 0;
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s32 g_oe = 1;
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s32 g_gain = 1;
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s32 g_x_roomt = 0;
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s32 tmp = 0;
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if (raw == 0)
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return 0;
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raw &= 0xfff;
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g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
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g_oe = mt->adc_oe - 512;
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format_1 = mt->vts[VTS2] + 3105 - g_oe;
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format_2 = (mt->degc_cali * 10) >> 1;
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g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
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tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
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tmp = tmp * 10 * 100 / 11;
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if (mt->o_slope_sign == 0)
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tmp = tmp / (165 - mt->o_slope);
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else
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tmp = tmp / (165 + mt->o_slope);
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return (format_2 - tmp) * 100;
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}
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/**
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* mtk_thermal_get_bank - get bank
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* @bank: The bank
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@ -594,9 +652,13 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
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raw = readl(mt->thermal_base +
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conf->msr[conf->bank_data[bank->id].sensors[i]]);
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temp = raw_to_mcelsius_v1(mt,
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conf->bank_data[bank->id].sensors[i],
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raw);
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if (mt->conf->version == MTK_THERMAL_V1) {
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temp = raw_to_mcelsius_v1(
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mt, conf->bank_data[bank->id].sensors[i], raw);
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} else {
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temp = raw_to_mcelsius_v2(
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mt, conf->bank_data[bank->id].sensors[i], raw);
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}
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/*
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* The first read of a sensor often contains very high bogus
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@ -698,9 +760,11 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
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writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
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controller_base + TEMP_ADCMUXADDR);
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/* AHB address for pnp sensor mux selection */
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writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
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controller_base + TEMP_PNPMUXADDR);
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if (mt->conf->version == MTK_THERMAL_V1) {
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/* AHB address for pnp sensor mux selection */
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writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
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controller_base + TEMP_PNPMUXADDR);
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}
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/* AHB value for auxadc enable */
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writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
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@ -803,6 +867,23 @@ static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
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return 0;
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}
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static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
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{
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if (!CALIB_BUF1_VALID_V2(buf[1]))
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return -EINVAL;
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mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
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mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
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mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
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mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
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mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
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mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
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mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
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mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
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return 0;
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}
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static int mtk_thermal_get_calibration_data(struct device *dev,
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struct mtk_thermal *mt)
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{
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@ -838,8 +919,15 @@ static int mtk_thermal_get_calibration_data(struct device *dev,
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goto out;
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}
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if (mtk_thermal_extract_efuse_v1(mt, buf))
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if (mt->conf->version == MTK_THERMAL_V1)
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ret = mtk_thermal_extract_efuse_v1(mt, buf);
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else
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ret = mtk_thermal_extract_efuse_v2(mt, buf);
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if (ret) {
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dev_info(dev, "Device not calibrated, using default calibration values\n");
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ret = 0;
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}
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out:
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kfree(buf);
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@ -872,6 +960,28 @@ static const struct of_device_id mtk_thermal_of_match[] = {
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};
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MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
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static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
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{
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int tmp;
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tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
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tmp &= ~(0x37);
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tmp |= 0x1;
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writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
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udelay(200);
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}
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static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
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void __iomem *auxadc_base)
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{
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int tmp;
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writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
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writel(0x1, mt->thermal_base + TEMP_MONCTL0);
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tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
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writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
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}
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static int mtk_thermal_probe(struct platform_device *pdev)
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{
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int ret, i, ctrl_id;
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@ -880,6 +990,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
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struct resource *res;
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u64 auxadc_phys_base, apmixed_phys_base;
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struct thermal_zone_device *tzdev;
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void __iomem *apmixed_base, *auxadc_base;
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mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
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if (!mt)
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@ -914,6 +1025,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
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return -ENODEV;
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}
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auxadc_base = of_iomap(auxadc, 0);
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auxadc_phys_base = of_get_phys_base(auxadc);
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of_node_put(auxadc);
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@ -929,6 +1041,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
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return -ENODEV;
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}
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apmixed_base = of_iomap(apmixedsys, 0);
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apmixed_phys_base = of_get_phys_base(apmixedsys);
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of_node_put(apmixedsys);
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@ -954,6 +1067,11 @@ static int mtk_thermal_probe(struct platform_device *pdev)
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goto err_disable_clk_auxadc;
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}
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if (mt->conf->version == MTK_THERMAL_V2) {
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mtk_thermal_turn_on_buffer(apmixed_base);
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mtk_thermal_release_periodic_ts(mt, auxadc_base);
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}
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for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
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for (i = 0; i < mt->conf->num_banks; i++)
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mtk_thermal_init_bank(mt, i, apmixed_phys_base,
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