+++ /dev/null
-From aec1d89dccc7cba04fdb3e52dfda328f3302ba17 Mon Sep 17 00:00:00 2001
-From: Daniel Golle <daniel@makrotopia.org>
-Date: Wed, 18 Jan 2023 15:40:58 +0000
-Subject: [PATCH 04/42] thermal/drivers/mtk: Add support for MT7986 and MT7981
-
-Add support for V3 generation thermal found in MT7986 and MT7981 SoCs.
-Brings code to assign values from efuse as well as new function to
-convert raw temperature to millidegree celsius, as found in MediaTek's
-SDK sources (but cleaned up and de-duplicated)
-
-[1]: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/baf36c7eef477aae1f8f2653b6c29e2caf48475b
-
-Signed-off-by: Daniel Golle <daniel@makrotopia.org>
-Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
-Link: https://lore.kernel.org/r/2d341fc45266217249586eb4bd3be3ac4ca83a12.1674055882.git.daniel@makrotopia.org
-Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
----
- drivers/thermal/mtk_thermal.c | 128 ++++++++++++++++++++++++++++++++--
- 1 file changed, 124 insertions(+), 4 deletions(-)
-
---- a/drivers/thermal/mtk_thermal.c
-+++ b/drivers/thermal/mtk_thermal.c
-@@ -150,6 +150,20 @@
- #define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
- #define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
-
-+/*
-+ * Layout of the fuses providing the calibration data
-+ * These macros can be used for MT7981 and MT7986.
-+ */
-+#define CALIB_BUF0_ADC_GE_V3(x) (((x) >> 0) & 0x3ff)
-+#define CALIB_BUF0_DEGC_CALI_V3(x) (((x) >> 20) & 0x3f)
-+#define CALIB_BUF0_O_SLOPE_V3(x) (((x) >> 26) & 0x3f)
-+#define CALIB_BUF1_VTS_TS1_V3(x) (((x) >> 0) & 0x1ff)
-+#define CALIB_BUF1_VTS_TS2_V3(x) (((x) >> 21) & 0x1ff)
-+#define CALIB_BUF1_VTS_TSABB_V3(x) (((x) >> 9) & 0x1ff)
-+#define CALIB_BUF1_VALID_V3(x) (((x) >> 18) & 0x1)
-+#define CALIB_BUF1_O_SLOPE_SIGN_V3(x) (((x) >> 19) & 0x1)
-+#define CALIB_BUF1_ID_V3(x) (((x) >> 20) & 0x1)
-+
- enum {
- VTS1,
- VTS2,
-@@ -163,6 +177,7 @@ enum {
- enum mtk_thermal_version {
- MTK_THERMAL_V1 = 1,
- MTK_THERMAL_V2,
-+ MTK_THERMAL_V3,
- };
-
- /* MT2701 thermal sensors */
-@@ -245,6 +260,27 @@ enum mtk_thermal_version {
- /* The calibration coefficient of sensor */
- #define MT8183_CALIBRATION 153
-
-+/* AUXADC channel 11 is used for the temperature sensors */
-+#define MT7986_TEMP_AUXADC_CHANNEL 11
-+
-+/* The total number of temperature sensors in the MT7986 */
-+#define MT7986_NUM_SENSORS 1
-+
-+/* The number of banks in the MT7986 */
-+#define MT7986_NUM_ZONES 1
-+
-+/* The number of sensing points per bank */
-+#define MT7986_NUM_SENSORS_PER_ZONE 1
-+
-+/* MT7986 thermal sensors */
-+#define MT7986_TS1 0
-+
-+/* The number of controller in the MT7986 */
-+#define MT7986_NUM_CONTROLLER 1
-+
-+/* The calibration coefficient of sensor */
-+#define MT7986_CALIBRATION 165
-+
- struct mtk_thermal;
-
- struct thermal_bank_cfg {
-@@ -388,6 +424,14 @@ static const int mt7622_mux_values[MT762
- static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
- static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
-
-+/* MT7986 thermal sensor data */
-+static const int mt7986_bank_data[MT7986_NUM_SENSORS] = { MT7986_TS1, };
-+static const int mt7986_msr[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
-+static const int mt7986_adcpnp[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
-+static const int mt7986_mux_values[MT7986_NUM_SENSORS] = { 0, };
-+static const int mt7986_vts_index[MT7986_NUM_SENSORS] = { VTS1 };
-+static const int mt7986_tc_offset[MT7986_NUM_CONTROLLER] = { 0x0, };
-+
- /*
- * The MT8173 thermal controller has four banks. Each bank can read up to
- * four temperature sensors simultaneously. The MT8173 has a total of 5
-@@ -551,6 +595,30 @@ static const struct mtk_thermal_data mt8
- .version = MTK_THERMAL_V1,
- };
-
-+/*
-+ * MT7986 uses AUXADC Channel 11 for raw data access.
-+ */
-+static const struct mtk_thermal_data mt7986_thermal_data = {
-+ .auxadc_channel = MT7986_TEMP_AUXADC_CHANNEL,
-+ .num_banks = MT7986_NUM_ZONES,
-+ .num_sensors = MT7986_NUM_SENSORS,
-+ .vts_index = mt7986_vts_index,
-+ .cali_val = MT7986_CALIBRATION,
-+ .num_controller = MT7986_NUM_CONTROLLER,
-+ .controller_offset = mt7986_tc_offset,
-+ .need_switch_bank = true,
-+ .bank_data = {
-+ {
-+ .num_sensors = 1,
-+ .sensors = mt7986_bank_data,
-+ },
-+ },
-+ .msr = mt7986_msr,
-+ .adcpnp = mt7986_adcpnp,
-+ .sensor_mux_values = mt7986_mux_values,
-+ .version = MTK_THERMAL_V3,
-+};
-+
- /**
- * raw_to_mcelsius_v1 - convert a raw ADC value to mcelsius
- * @mt: The thermal controller
-@@ -605,6 +673,22 @@ static int raw_to_mcelsius_v2(struct mtk
- return (format_2 - tmp) * 100;
- }
-
-+static int raw_to_mcelsius_v3(struct mtk_thermal *mt, int sensno, s32 raw)
-+{
-+ s32 tmp;
-+
-+ if (raw == 0)
-+ return 0;
-+
-+ raw &= 0xfff;
-+ tmp = 100000 * 15 / 16 * 10000;
-+ tmp /= 4096 - 512 + mt->adc_ge;
-+ tmp /= 1490;
-+ tmp *= raw - mt->vts[sensno] - 2900;
-+
-+ return mt->degc_cali * 500 - tmp;
-+}
-+
- /**
- * mtk_thermal_get_bank - get bank
- * @bank: The bank
-@@ -885,6 +969,25 @@ static int mtk_thermal_extract_efuse_v2(
- return 0;
- }
-
-+static int mtk_thermal_extract_efuse_v3(struct mtk_thermal *mt, u32 *buf)
-+{
-+ if (!CALIB_BUF1_VALID_V3(buf[1]))
-+ return -EINVAL;
-+
-+ mt->adc_ge = CALIB_BUF0_ADC_GE_V3(buf[0]);
-+ mt->degc_cali = CALIB_BUF0_DEGC_CALI_V3(buf[0]);
-+ mt->o_slope = CALIB_BUF0_O_SLOPE_V3(buf[0]);
-+ mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V3(buf[1]);
-+ mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V3(buf[1]);
-+ mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V3(buf[1]);
-+ mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V3(buf[1]);
-+
-+ if (CALIB_BUF1_ID_V3(buf[1]) == 0)
-+ mt->o_slope = 0;
-+
-+ return 0;
-+}
-+
- static int mtk_thermal_get_calibration_data(struct device *dev,
- struct mtk_thermal *mt)
- {
-@@ -895,6 +998,7 @@ static int mtk_thermal_get_calibration_d
-
- /* Start with default values */
- mt->adc_ge = 512;
-+ mt->adc_oe = 512;
- for (i = 0; i < mt->conf->num_sensors; i++)
- mt->vts[i] = 260;
- mt->degc_cali = 40;
-@@ -920,10 +1024,20 @@ static int mtk_thermal_get_calibration_d
- goto out;
- }
-
-- if (mt->conf->version == MTK_THERMAL_V1)
-+ switch (mt->conf->version) {
-+ case MTK_THERMAL_V1:
- ret = mtk_thermal_extract_efuse_v1(mt, buf);
-- else
-+ break;
-+ case MTK_THERMAL_V2:
- ret = mtk_thermal_extract_efuse_v2(mt, buf);
-+ break;
-+ case MTK_THERMAL_V3:
-+ ret = mtk_thermal_extract_efuse_v3(mt, buf);
-+ break;
-+ default:
-+ ret = -EINVAL;
-+ break;
-+ }
-
- if (ret) {
- dev_info(dev, "Device not calibrated, using default calibration values\n");
-@@ -954,6 +1068,10 @@ static const struct of_device_id mtk_the
- .data = (void *)&mt7622_thermal_data,
- },
- {
-+ .compatible = "mediatek,mt7986-thermal",
-+ .data = (void *)&mt7986_thermal_data,
-+ },
-+ {
- .compatible = "mediatek,mt8183-thermal",
- .data = (void *)&mt8183_thermal_data,
- }, {
-@@ -1066,15 +1184,17 @@ static int mtk_thermal_probe(struct plat
- goto err_disable_clk_auxadc;
- }
-
-- if (mt->conf->version == MTK_THERMAL_V2) {
-+ if (mt->conf->version != MTK_THERMAL_V1) {
- mtk_thermal_turn_on_buffer(apmixed_base);
- mtk_thermal_release_periodic_ts(mt, auxadc_base);
- }
-
- if (mt->conf->version == MTK_THERMAL_V1)
- mt->raw_to_mcelsius = raw_to_mcelsius_v1;
-- else
-+ else if (mt->conf->version == MTK_THERMAL_V2)
- mt->raw_to_mcelsius = raw_to_mcelsius_v2;
-+ else
-+ mt->raw_to_mcelsius = raw_to_mcelsius_v3;
-
- for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
- for (i = 0; i < mt->conf->num_banks; i++)
projects / openwrt / staging / 981213.git / blobdiff