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1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2023 MediaTek Inc. * Author: Balsam CHIHI <bchihi@baylibre.com> */ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/delay.h> #include <linux/debugfs.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/nvmem-consumer.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/reset.h> #include <linux/thermal.h> #include <dt-bindings/thermal/mediatek,lvts-thermal.h> #include "../thermal_hwmon.h" #define LVTS_MONCTL0(__base) (__base + 0x0000) #define LVTS_MONCTL1(__base) (__base + 0x0004) #define LVTS_MONCTL2(__base) (__base + 0x0008) #define LVTS_MONINT(__base) (__base + 0x000C) #define LVTS_MONINTSTS(__base) (__base + 0x0010) #define LVTS_MONIDET0(__base) (__base + 0x0014) #define LVTS_MONIDET1(__base) (__base + 0x0018) #define LVTS_MONIDET2(__base) (__base + 0x001C) #define LVTS_MONIDET3(__base) (__base + 0x0020) #define LVTS_H2NTHRE(__base) (__base + 0x0024) #define LVTS_HTHRE(__base) (__base + 0x0028) #define LVTS_OFFSETH(__base) (__base + 0x0030) #define LVTS_OFFSETL(__base) (__base + 0x0034) #define LVTS_MSRCTL0(__base) (__base + 0x0038) #define LVTS_MSRCTL1(__base) (__base + 0x003C) #define LVTS_TSSEL(__base) (__base + 0x0040) #define LVTS_CALSCALE(__base) (__base + 0x0048) #define LVTS_ID(__base) (__base + 0x004C) #define LVTS_CONFIG(__base) (__base + 0x0050) #define LVTS_EDATA00(__base) (__base + 0x0054) #define LVTS_EDATA01(__base) (__base + 0x0058) #define LVTS_EDATA02(__base) (__base + 0x005C) #define LVTS_EDATA03(__base) (__base + 0x0060) #define LVTS_MSR0(__base) (__base + 0x0090) #define LVTS_MSR1(__base) (__base + 0x0094) #define LVTS_MSR2(__base) (__base + 0x0098) #define LVTS_MSR3(__base) (__base + 0x009C) #define LVTS_IMMD0(__base) (__base + 0x00A0) #define LVTS_IMMD1(__base) (__base + 0x00A4) #define LVTS_IMMD2(__base) (__base + 0x00A8) #define LVTS_IMMD3(__base) (__base + 0x00AC) #define LVTS_PROTCTL(__base) (__base + 0x00C0) #define LVTS_PROTTA(__base) (__base + 0x00C4) #define LVTS_PROTTB(__base) (__base + 0x00C8) #define LVTS_PROTTC(__base) (__base + 0x00CC) #define LVTS_CLKEN(__base) (__base + 0x00E4) #define LVTS_PERIOD_UNIT 0 #define LVTS_GROUP_INTERVAL 0 #define LVTS_FILTER_INTERVAL 0 #define LVTS_SENSOR_INTERVAL 0 #define LVTS_HW_FILTER 0x0 #define LVTS_TSSEL_CONF 0x13121110 #define LVTS_CALSCALE_CONF 0x300 #define LVTS_MONINT_CONF 0x8300318C #define LVTS_MONINT_OFFSET_SENSOR0 0xC #define LVTS_MONINT_OFFSET_SENSOR1 0x180 #define LVTS_MONINT_OFFSET_SENSOR2 0x3000 #define LVTS_MONINT_OFFSET_SENSOR3 0x3000000 #define LVTS_INT_SENSOR0 0x0009001F #define LVTS_INT_SENSOR1 0x001203E0 #define LVTS_INT_SENSOR2 0x00247C00 #define LVTS_INT_SENSOR3 0x1FC00000 #define LVTS_SENSOR_MAX 4 #define LVTS_GOLDEN_TEMP_MAX 62 #define LVTS_GOLDEN_TEMP_DEFAULT 50 #define LVTS_COEFF_A_MT8195 -250460 #define LVTS_COEFF_B_MT8195 250460 #define LVTS_COEFF_A_MT7988 -204650 #define LVTS_COEFF_B_MT7988 204650 #define LVTS_MSR_IMMEDIATE_MODE 0 #define LVTS_MSR_FILTERED_MODE 1 #define LVTS_MSR_READ_TIMEOUT_US 400 #define LVTS_MSR_READ_WAIT_US (LVTS_MSR_READ_TIMEOUT_US / 2) #define LVTS_HW_SHUTDOWN_MT7988 105000 #define LVTS_HW_SHUTDOWN_MT8192 105000 #define LVTS_HW_SHUTDOWN_MT8195 105000 #define LVTS_MINIMUM_THRESHOLD 20000 static int golden_temp = LVTS_GOLDEN_TEMP_DEFAULT; static int golden_temp_offset; struct lvts_sensor_data { int dt_id; }; struct lvts_ctrl_data { struct lvts_sensor_data lvts_sensor[LVTS_SENSOR_MAX]; int cal_offset[LVTS_SENSOR_MAX]; int hw_tshut_temp; int num_lvts_sensor; int offset; int mode; }; struct lvts_data { const struct lvts_ctrl_data *lvts_ctrl; int num_lvts_ctrl; int temp_factor; int temp_offset; }; struct lvts_sensor { struct thermal_zone_device *tz; void __iomem *msr; void __iomem *base; int id; int dt_id; int low_thresh; int high_thresh; }; struct lvts_ctrl { struct lvts_sensor sensors[LVTS_SENSOR_MAX]; const struct lvts_data *lvts_data; u32 calibration[LVTS_SENSOR_MAX]; u32 hw_tshut_raw_temp; int num_lvts_sensor; int mode; void __iomem *base; int low_thresh; int high_thresh; }; struct lvts_domain { struct lvts_ctrl *lvts_ctrl; struct reset_control *reset; struct clk *clk; int num_lvts_ctrl; void __iomem *base; size_t calib_len; u8 *calib; #ifdef CONFIG_DEBUG_FS struct dentry *dom_dentry; #endif }; #ifdef CONFIG_MTK_LVTS_THERMAL_DEBUGFS #define LVTS_DEBUG_FS_REGS(__reg) \ { \ .name = __stringify(__reg), \ .offset = __reg(0), \ } static const struct debugfs_reg32 lvts_regs[] = { LVTS_DEBUG_FS_REGS(LVTS_MONCTL0), LVTS_DEBUG_FS_REGS(LVTS_MONCTL1), LVTS_DEBUG_FS_REGS(LVTS_MONCTL2), LVTS_DEBUG_FS_REGS(LVTS_MONINT), LVTS_DEBUG_FS_REGS(LVTS_MONINTSTS), LVTS_DEBUG_FS_REGS(LVTS_MONIDET0), LVTS_DEBUG_FS_REGS(LVTS_MONIDET1), LVTS_DEBUG_FS_REGS(LVTS_MONIDET2), LVTS_DEBUG_FS_REGS(LVTS_MONIDET3), LVTS_DEBUG_FS_REGS(LVTS_H2NTHRE), LVTS_DEBUG_FS_REGS(LVTS_HTHRE), LVTS_DEBUG_FS_REGS(LVTS_OFFSETH), LVTS_DEBUG_FS_REGS(LVTS_OFFSETL), LVTS_DEBUG_FS_REGS(LVTS_MSRCTL0), LVTS_DEBUG_FS_REGS(LVTS_MSRCTL1), LVTS_DEBUG_FS_REGS(LVTS_TSSEL), LVTS_DEBUG_FS_REGS(LVTS_CALSCALE), LVTS_DEBUG_FS_REGS(LVTS_ID), LVTS_DEBUG_FS_REGS(LVTS_CONFIG), LVTS_DEBUG_FS_REGS(LVTS_EDATA00), LVTS_DEBUG_FS_REGS(LVTS_EDATA01), LVTS_DEBUG_FS_REGS(LVTS_EDATA02), LVTS_DEBUG_FS_REGS(LVTS_EDATA03), LVTS_DEBUG_FS_REGS(LVTS_MSR0), LVTS_DEBUG_FS_REGS(LVTS_MSR1), LVTS_DEBUG_FS_REGS(LVTS_MSR2), LVTS_DEBUG_FS_REGS(LVTS_MSR3), LVTS_DEBUG_FS_REGS(LVTS_IMMD0), LVTS_DEBUG_FS_REGS(LVTS_IMMD1), LVTS_DEBUG_FS_REGS(LVTS_IMMD2), LVTS_DEBUG_FS_REGS(LVTS_IMMD3), LVTS_DEBUG_FS_REGS(LVTS_PROTCTL), LVTS_DEBUG_FS_REGS(LVTS_PROTTA), LVTS_DEBUG_FS_REGS(LVTS_PROTTB), LVTS_DEBUG_FS_REGS(LVTS_PROTTC), LVTS_DEBUG_FS_REGS(LVTS_CLKEN), }; static int lvts_debugfs_init(struct device *dev, struct lvts_domain *lvts_td) { struct debugfs_regset32 *regset; struct lvts_ctrl *lvts_ctrl; struct dentry *dentry; char name[64]; int i; lvts_td->dom_dentry = debugfs_create_dir(dev_name(dev), NULL); if (IS_ERR(lvts_td->dom_dentry)) return 0; for (i = 0; i < lvts_td->num_lvts_ctrl; i++) { lvts_ctrl = &lvts_td->lvts_ctrl[i]; sprintf(name, "controller%d", i); dentry = debugfs_create_dir(name, lvts_td->dom_dentry); if (IS_ERR(dentry)) continue; regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); if (!regset) continue; regset->base = lvts_ctrl->base; regset->regs = lvts_regs; regset->nregs = ARRAY_SIZE(lvts_regs); debugfs_create_regset32("registers", 0400, dentry, regset); } return 0; } static void lvts_debugfs_exit(struct lvts_domain *lvts_td) { debugfs_remove_recursive(lvts_td->dom_dentry); } #else static inline int lvts_debugfs_init(struct device *dev, struct lvts_domain *lvts_td) { return 0; } static void lvts_debugfs_exit(struct lvts_domain *lvts_td) { } #endif static int lvts_raw_to_temp(u32 raw_temp, int temp_factor) { int temperature; temperature = ((s64)(raw_temp & 0xFFFF) * temp_factor) >> 14; temperature += golden_temp_offset; return temperature; } static u32 lvts_temp_to_raw(int temperature, int temp_factor) { u32 raw_temp = ((s64)(golden_temp_offset - temperature)) << 14; raw_temp = div_s64(raw_temp, -temp_factor); return raw_temp; } static int lvts_get_temp(struct thermal_zone_device *tz, int *temp) { struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz); struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]); const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; void __iomem *msr = lvts_sensor->msr; u32 value; int rc; /* * Measurement registers: * * LVTS_MSR[0-3] / LVTS_IMMD[0-3] * * Bits: * * 32-17: Unused * 16 : Valid temperature * 15-0 : Raw temperature */ rc = readl_poll_timeout(msr, value, value & BIT(16), LVTS_MSR_READ_WAIT_US, LVTS_MSR_READ_TIMEOUT_US); /* * As the thermal zone temperature will read before the * hardware sensor is fully initialized, we have to check the * validity of the temperature returned when reading the * measurement register. The thermal controller will set the * valid bit temperature only when it is totally initialized. * * Otherwise, we may end up with garbage values out of the * functionning temperature and directly jump to a system * shutdown. */ if (rc) return -EAGAIN; *temp = lvts_raw_to_temp(value & 0xFFFF, lvts_data->temp_factor); return 0; } static void lvts_update_irq_mask(struct lvts_ctrl *lvts_ctrl) { u32 masks[] = { LVTS_MONINT_OFFSET_SENSOR0, LVTS_MONINT_OFFSET_SENSOR1, LVTS_MONINT_OFFSET_SENSOR2, LVTS_MONINT_OFFSET_SENSOR3, }; u32 value = 0; int i; value = readl(LVTS_MONINT(lvts_ctrl->base)); for (i = 0; i < ARRAY_SIZE(masks); i++) { if (lvts_ctrl->sensors[i].high_thresh == lvts_ctrl->high_thresh && lvts_ctrl->sensors[i].low_thresh == lvts_ctrl->low_thresh) value |= masks[i]; else value &= ~masks[i]; } writel(value, LVTS_MONINT(lvts_ctrl->base)); } static bool lvts_should_update_thresh(struct lvts_ctrl *lvts_ctrl, int high) { int i; if (high > lvts_ctrl->high_thresh) return true; for (i = 0; i < lvts_ctrl->num_lvts_sensor; i++) if (lvts_ctrl->sensors[i].high_thresh == lvts_ctrl->high_thresh && lvts_ctrl->sensors[i].low_thresh == lvts_ctrl->low_thresh) return false; return true; } static int lvts_set_trips(struct thermal_zone_device *tz, int low, int high) { struct lvts_sensor *lvts_sensor = thermal_zone_device_priv(tz); struct lvts_ctrl *lvts_ctrl = container_of(lvts_sensor, struct lvts_ctrl, sensors[lvts_sensor->id]); const struct lvts_data *lvts_data = lvts_ctrl->lvts_data; void __iomem *base = lvts_sensor->base; u32 raw_low = lvts_temp_to_raw(low != -INT_MAX ? low : LVTS_MINIMUM_THRESHOLD, lvts_data->temp_factor); u32 raw_high = lvts_temp_to_raw(high, lvts_data->temp_factor); bool should_update_thresh; lvts_sensor->low_thresh = low; lvts_sensor->high_thresh = high; should_update_thresh = lvts_should_update_thresh(lvts_ctrl, high); if (should_update_thresh) { lvts_ctrl->high_thresh = high; lvts_ctrl->low_thresh = low; } lvts_update_irq_mask(lvts_ctrl); if (!should_update_thresh) return 0; /* * Low offset temperature threshold * * LVTS_OFFSETL * * Bits: * * 14-0 : Raw temperature for threshold */ pr_debug("%s: Setting low limit temperature interrupt: %d\n", thermal_zone_device_type(tz), low); writel(raw_low, LVTS_OFFSETL(base)); /* * High offset temperature threshold * * LVTS_OFFSETH * * Bits: * * 14-0 : Raw temperature for threshold */ pr_debug("%s: Setting high limit temperature interrupt: %d\n", thermal_zone_device_type(tz), high); writel(raw_high, LVTS_OFFSETH(base)); return 0; } static irqreturn_t lvts_ctrl_irq_handler(struct lvts_ctrl *lvts_ctrl) { irqreturn_t iret = IRQ_NONE; u32 value; u32 masks[] = { LVTS_INT_SENSOR0, LVTS_INT_SENSOR1, LVTS_INT_SENSOR2, LVTS_INT_SENSOR3 }; int i; /* * Interrupt monitoring status * * LVTS_MONINTST * * Bits: * * 31 : Interrupt for stage 3 * 30 : Interrupt for stage 2 * 29 : Interrupt for state 1 * 28 : Interrupt using filter on sensor 3 * * 27 : Interrupt using immediate on sensor 3 * 26 : Interrupt normal to hot on sensor 3 * 25 : Interrupt high offset on sensor 3 * 24 : Interrupt low offset on sensor 3 * * 23 : Interrupt hot threshold on sensor 3 * 22 : Interrupt cold threshold on sensor 3 * 21 : Interrupt using filter on sensor 2 * 20 : Interrupt using filter on sensor 1 * * 19 : Interrupt using filter on sensor 0 * 18 : Interrupt using immediate on sensor 2 * 17 : Interrupt using immediate on sensor 1 * 16 : Interrupt using immediate on sensor 0 * * 15 : Interrupt device access timeout interrupt * 14 : Interrupt normal to hot on sensor 2 * 13 : Interrupt high offset interrupt on sensor 2 * 12 : Interrupt low offset interrupt on sensor 2 * * 11 : Interrupt hot threshold on sensor 2 * 10 : Interrupt cold threshold on sensor 2 * 9 : Interrupt normal to hot on sensor 1 * 8 : Interrupt high offset interrupt on sensor 1 * * 7 : Interrupt low offset interrupt on sensor 1 * 6 : Interrupt hot threshold on sensor 1 * 5 : Interrupt cold threshold on sensor 1 * 4 : Interrupt normal to hot on sensor 0 * * 3 : Interrupt high offset interrupt on sensor 0 * 2 : Interrupt low offset interrupt on sensor 0 * 1 : Interrupt hot threshold on sensor 0 * 0 : Interrupt cold threshold on sensor 0 * * We are interested in the sensor(s) responsible of the * interrupt event. We update the thermal framework with the * thermal zone associated with the sensor. The framework will * take care of the rest whatever the kind of interrupt, we * are only interested in which sensor raised the interrupt. * * sensor 3 interrupt: 0001 1111 1100 0000 0000 0000 0000 0000 * => 0x1FC00000 * sensor 2 interrupt: 0000 0000 0010 0100 0111 1100 0000 0000 * => 0x00247C00 * sensor 1 interrupt: 0000 0000 0001 0010 0000 0011 1110 0000 * => 0X001203E0 * sensor 0 interrupt: 0000 0000 0000 1001 0000 0000 0001 1111 * => 0x0009001F */ value = readl(LVTS_MONINTSTS(lvts_ctrl->base)); /* * Let's figure out which sensors raised the interrupt * * NOTE: the masks array must be ordered with the index * corresponding to the sensor id eg. index=0, mask for * sensor0. */ for (i = 0; i < ARRAY_SIZE(masks); i++) { if (!(value & masks[i])) continue; thermal_zone_device_update(lvts_ctrl->sensors[i].tz, THERMAL_TRIP_VIOLATED); iret = IRQ_HANDLED; } /* * Write back to clear the interrupt status (W1C) */ writel(value, LVTS_MONINTSTS(lvts_ctrl->base)); return iret; } /* * Temperature interrupt handler. Even if the driver supports more * interrupt modes, we use the interrupt when the temperature crosses * the hot threshold the way up and the way down (modulo the * hysteresis). * * Each thermal domain has a couple of interrupts, one for hardware * reset and another one for all the thermal events happening on the * different sensors. * * The interrupt is configured for thermal events when crossing the * hot temperature limit. At each interrupt, we check in every * controller if there is an interrupt pending. */ static irqreturn_t lvts_irq_handler(int irq, void *data) { struct lvts_domain *lvts_td = data; irqreturn_t aux, iret = IRQ_NONE; int i; for (i = 0; i < lvts_td->num_lvts_ctrl; i++) { aux = lvts_ctrl_irq_handler(&lvts_td->lvts_ctrl[i]); if (aux != IRQ_HANDLED) continue; iret = IRQ_HANDLED; } return iret; } static struct thermal_zone_device_ops lvts_ops = { .get_temp = lvts_get_temp, .set_trips = lvts_set_trips, }; static int lvts_sensor_init(struct device *dev, struct lvts_ctrl *lvts_ctrl, const struct lvts_ctrl_data *lvts_ctrl_data) { struct lvts_sensor *lvts_sensor = lvts_ctrl->sensors; void __iomem *msr_regs[] = { LVTS_MSR0(lvts_ctrl->base), LVTS_MSR1(lvts_ctrl->base), LVTS_MSR2(lvts_ctrl->base), LVTS_MSR3(lvts_ctrl->base) }; void __iomem *imm_regs[] = { LVTS_IMMD0(lvts_ctrl->base), LVTS_IMMD1(lvts_ctrl->base), LVTS_IMMD2(lvts_ctrl->base), LVTS_IMMD3(lvts_ctrl->base) }; int i; for (i = 0; i < lvts_ctrl_data->num_lvts_sensor; i++) { int dt_id = lvts_ctrl_data->lvts_sensor[i].dt_id; /* * At this point, we don't know which id matches which * sensor. Let's set arbitrally the id from the index. */ lvts_sensor[i].id = i; /* * The thermal zone registration will set the trip * point interrupt in the thermal controller * register. But this one will be reset in the * initialization after. So we need to post pone the * thermal zone creation after the controller is * setup. For this reason, we store the device tree * node id from the data in the sensor structure */ lvts_sensor[i].dt_id = dt_id; /* * We assign the base address of the thermal * controller as a back pointer. So it will be * accessible from the different thermal framework ops * as we pass the lvts_sensor pointer as thermal zone * private data. */ lvts_sensor[i].base = lvts_ctrl->base; /* * Each sensor has its own register address to read from. */ lvts_sensor[i].msr = lvts_ctrl_data->mode == LVTS_MSR_IMMEDIATE_MODE ? imm_regs[i] : msr_regs[i]; lvts_sensor[i].low_thresh = INT_MIN; lvts_sensor[i].high_thresh = INT_MIN; }; lvts_ctrl->num_lvts_sensor = lvts_ctrl_data->num_lvts_sensor; return 0; } /* * The efuse blob values follows the sensor enumeration per thermal * controller. The decoding of the stream is as follow: * * MT8192 : * Stream index map for MCU Domain mt8192 : * * <-----mcu-tc#0-----> <-----sensor#0-----> <-----sensor#1-----> * 0x01 | 0x02 | 0x03 | 0x04 | 0x05 | 0x06 | 0x07 | 0x08 | 0x09 | 0x0A | 0x0B * * <-----sensor#2-----> <-----sensor#3-----> * 0x0C | 0x0D | 0x0E | 0x0F | 0x10 | 0x11 | 0x12 | 0x13 * * <-----sensor#4-----> <-----sensor#5-----> <-----sensor#6-----> <-----sensor#7-----> * 0x14 | 0x15 | 0x16 | 0x17 | 0x18 | 0x19 | 0x1A | 0x1B | 0x1C | 0x1D | 0x1E | 0x1F | 0x20 | 0x21 | 0x22 | 0x23 * * Stream index map for AP Domain mt8192 : * * <-----sensor#0-----> <-----sensor#1-----> * 0x24 | 0x25 | 0x26 | 0x27 | 0x28 | 0x29 | 0x2A | 0x2B * * <-----sensor#2-----> <-----sensor#3-----> * 0x2C | 0x2D | 0x2E | 0x2F | 0x30 | 0x31 | 0x32 | 0x33 * * <-----sensor#4-----> <-----sensor#5-----> * 0x34 | 0x35 | 0x36 | 0x37 | 0x38 | 0x39 | 0x3A | 0x3B * * <-----sensor#6-----> <-----sensor#7-----> <-----sensor#8-----> * 0x3C | 0x3D | 0x3E | 0x3F | 0x40 | 0x41 | 0x42 | 0x43 | 0x44 | 0x45 | 0x46 | 0x47 * * MT8195 : * Stream index map for MCU Domain mt8195 : * * <-----mcu-tc#0-----> <-----sensor#0-----> <-----sensor#1-----> * 0x01 | 0x02 | 0x03 | 0x04 | 0x05 | 0x06 | 0x07 | 0x08 | 0x09 * * <-----mcu-tc#1-----> <-----sensor#2-----> <-----sensor#3-----> * 0x0A | 0x0B | 0x0C | 0x0D | 0x0E | 0x0F | 0x10 | 0x11 | 0x12 * * <-----mcu-tc#2-----> <-----sensor#4-----> <-----sensor#5-----> <-----sensor#6-----> <-----sensor#7-----> * 0x13 | 0x14 | 0x15 | 0x16 | 0x17 | 0x18 | 0x19 | 0x1A | 0x1B | 0x1C | 0x1D | 0x1E | 0x1F | 0x20 | 0x21 * * Stream index map for AP Domain mt8195 : * * <-----ap--tc#0-----> <-----sensor#0-----> <-----sensor#1-----> * 0x22 | 0x23 | 0x24 | 0x25 | 0x26 | 0x27 | 0x28 | 0x29 | 0x2A * * <-----ap--tc#1-----> <-----sensor#2-----> <-----sensor#3-----> * 0x2B | 0x2C | 0x2D | 0x2E | 0x2F | 0x30 | 0x31 | 0x32 | 0x33 * * <-----ap--tc#2-----> <-----sensor#4-----> <-----sensor#5-----> <-----sensor#6-----> * 0x34 | 0x35 | 0x36 | 0x37 | 0x38 | 0x39 | 0x3A | 0x3B | 0x3C | 0x3D | 0x3E | 0x3F * * <-----ap--tc#3-----> <-----sensor#7-----> <-----sensor#8-----> * 0x40 | 0x41 | 0x42 | 0x43 | 0x44 | 0x45 | 0x46 | 0x47 | 0x48 * * The data description gives the offset of the calibration data in * this bytes stream for each sensor. */ static int lvts_calibration_init(struct device *dev, struct lvts_ctrl *lvts_ctrl, const struct lvts_ctrl_data *lvts_ctrl_data, u8 *efuse_calibration) { int i; for (i = 0; i < lvts_ctrl_data->num_lvts_sensor; i++) memcpy(&lvts_ctrl->calibration[i], efuse_calibration + lvts_ctrl_data->cal_offset[i], 2); return 0; } /* * The efuse bytes stream can be split into different chunk of * nvmems. This function reads and concatenate those into a single * buffer so it can be read sequentially when initializing the * calibration data. */ static int lvts_calibration_read(struct device *dev, struct lvts_domain *lvts_td, const struct lvts_data *lvts_data) { struct device_node *np = dev_of_node(dev); struct nvmem_cell *cell; struct property *prop; const char *cell_name; of_property_for_each_string(np, "nvmem-cell-names", prop, cell_name) { size_t len; u8 *efuse; cell = of_nvmem_cell_get(np, cell_name); if (IS_ERR(cell)) { dev_err(dev, "Failed to get cell '%s'\n", cell_name); return PTR_ERR(cell); } efuse = nvmem_cell_read(cell, &len); nvmem_cell_put(cell); if (IS_ERR(efuse)) { dev_err(dev, "Failed to read cell '%s'\n", cell_name); return PTR_ERR(efuse); } lvts_td->calib = devm_krealloc(dev, lvts_td->calib, lvts_td->calib_len + len, GFP_KERNEL); if (!lvts_td->calib) { kfree(efuse); return -ENOMEM; } memcpy(lvts_td->calib + lvts_td->calib_len, efuse, len); lvts_td->calib_len += len; kfree(efuse); } return 0; } static int lvts_golden_temp_init(struct device *dev, u32 *value, int temp_offset) { u32 gt; gt = (*value) >> 24; if (gt && gt < LVTS_GOLDEN_TEMP_MAX) golden_temp = gt; golden_temp_offset = golden_temp * 500 + temp_offset; return 0; } static int lvts_ctrl_init(struct device *dev, struct lvts_domain *lvts_td, const struct lvts_data *lvts_data) { size_t size = sizeof(*lvts_td->lvts_ctrl) * lvts_data->num_lvts_ctrl; struct lvts_ctrl *lvts_ctrl; int i, ret; /* * Create the calibration bytes stream from efuse data */ ret = lvts_calibration_read(dev, lvts_td, lvts_data); if (ret) return ret; /* * The golden temp information is contained in the first chunk * of efuse data. */ ret = lvts_golden_temp_init(dev, (u32 *)lvts_td->calib, lvts_data->temp_offset); if (ret) return ret; lvts_ctrl = devm_kzalloc(dev, size, GFP_KERNEL); if (!lvts_ctrl) return -ENOMEM; for (i = 0; i < lvts_data->num_lvts_ctrl; i++) { lvts_ctrl[i].base = lvts_td->base + lvts_data->lvts_ctrl[i].offset; lvts_ctrl[i].lvts_data = lvts_data; ret = lvts_sensor_init(dev, &lvts_ctrl[i], &lvts_data->lvts_ctrl[i]); if (ret) return ret; ret = lvts_calibration_init(dev, &lvts_ctrl[i], &lvts_data->lvts_ctrl[i], lvts_td->calib); if (ret) return ret; /* * The mode the ctrl will use to read the temperature * (filtered or immediate) */ lvts_ctrl[i].mode = lvts_data->lvts_ctrl[i].mode; /* * The temperature to raw temperature must be done * after initializing the calibration. */ lvts_ctrl[i].hw_tshut_raw_temp = lvts_temp_to_raw(lvts_data->lvts_ctrl[i].hw_tshut_temp, lvts_data->temp_factor); lvts_ctrl[i].low_thresh = INT_MIN; lvts_ctrl[i].high_thresh = INT_MIN; } /* * We no longer need the efuse bytes stream, let's free it */ devm_kfree(dev, lvts_td->calib); lvts_td->lvts_ctrl = lvts_ctrl; lvts_td->num_lvts_ctrl = lvts_data->num_lvts_ctrl; return 0; } /* * At this point the configuration register is the only place in the * driver where we write multiple values. Per hardware constraint, * each write in the configuration register must be separated by a * delay of 2 us. */ static void lvts_write_config(struct lvts_ctrl *lvts_ctrl, u32 *cmds, int nr_cmds) { int i; /* * Configuration register */ for (i = 0; i < nr_cmds; i++) { writel(cmds[i], LVTS_CONFIG(lvts_ctrl->base)); usleep_range(2, 4); } } static int lvts_irq_init(struct lvts_ctrl *lvts_ctrl) { /* * LVTS_PROTCTL : Thermal Protection Sensor Selection * * Bits: * * 19-18 : Sensor to base the protection on * 17-16 : Strategy: * 00 : Average of 4 sensors * 01 : Max of 4 sensors * 10 : Selected sensor with bits 19-18 * 11 : Reserved */ writel(BIT(16), LVTS_PROTCTL(lvts_ctrl->base)); /* * LVTS_PROTTA : Stage 1 temperature threshold * LVTS_PROTTB : Stage 2 temperature threshold * LVTS_PROTTC : Stage 3 temperature threshold * * Bits: * * 14-0: Raw temperature threshold * * writel(0x0, LVTS_PROTTA(lvts_ctrl->base)); * writel(0x0, LVTS_PROTTB(lvts_ctrl->base)); */ writel(lvts_ctrl->hw_tshut_raw_temp, LVTS_PROTTC(lvts_ctrl->base)); /* * LVTS_MONINT : Interrupt configuration register * * The LVTS_MONINT register layout is the same as the LVTS_MONINTSTS * register, except we set the bits to enable the interrupt. */ writel(LVTS_MONINT_CONF, LVTS_MONINT(lvts_ctrl->base)); return 0; } static int lvts_domain_reset(struct device *dev, struct reset_control *reset) { int ret; ret = reset_control_assert(reset); if (ret) return ret; return reset_control_deassert(reset); } /* * Enable or disable the clocks of a specified thermal controller */ static int lvts_ctrl_set_enable(struct lvts_ctrl *lvts_ctrl, int enable) { /* * LVTS_CLKEN : Internal LVTS clock * * Bits: * * 0 : enable / disable clock */ writel(enable, LVTS_CLKEN(lvts_ctrl->base)); return 0; } static int lvts_ctrl_connect(struct device *dev, struct lvts_ctrl *lvts_ctrl) { u32 id, cmds[] = { 0xC103FFFF, 0xC502FF55 }; lvts_write_config(lvts_ctrl, cmds, ARRAY_SIZE(cmds)); /* * LVTS_ID : Get ID and status of the thermal controller * * Bits: * * 0-5 : thermal controller id * 7 : thermal controller connection is valid */ id = readl(LVTS_ID(lvts_ctrl->base)); if (!(id & BIT(7))) return -EIO; return 0; } static int lvts_ctrl_initialize(struct device *dev, struct lvts_ctrl *lvts_ctrl) { /* * Write device mask: 0xC1030000 */ u32 cmds[] = { 0xC1030E01, 0xC1030CFC, 0xC1030A8C, 0xC103098D, 0xC10308F1, 0xC10307A6, 0xC10306B8, 0xC1030500, 0xC1030420, 0xC1030300, 0xC1030030, 0xC10300F6, 0xC1030050, 0xC1030060, 0xC10300AC, 0xC10300FC, 0xC103009D, 0xC10300F1, 0xC10300E1 }; lvts_write_config(lvts_ctrl, cmds, ARRAY_SIZE(cmds)); return 0; } static int lvts_ctrl_calibrate(struct device *dev, struct lvts_ctrl *lvts_ctrl) { int i; void __iomem *lvts_edata[] = { LVTS_EDATA00(lvts_ctrl->base), LVTS_EDATA01(lvts_ctrl->base), LVTS_EDATA02(lvts_ctrl->base), LVTS_EDATA03(lvts_ctrl->base) }; /* * LVTS_EDATA0X : Efuse calibration reference value for sensor X * * Bits: * * 20-0 : Efuse value for normalization data */ for (i = 0; i < LVTS_SENSOR_MAX; i++) writel(lvts_ctrl->calibration[i], lvts_edata[i]); return 0; } static int lvts_ctrl_configure(struct device *dev, struct lvts_ctrl *lvts_ctrl) { u32 value; /* * LVTS_TSSEL : Sensing point index numbering * * Bits: * * 31-24: ADC Sense 3 * 23-16: ADC Sense 2 * 15-8 : ADC Sense 1 * 7-0 : ADC Sense 0 */ value = LVTS_TSSEL_CONF; writel(value, LVTS_TSSEL(lvts_ctrl->base)); /* * LVTS_CALSCALE : ADC voltage round */ value = 0x300; value = LVTS_CALSCALE_CONF; /* * LVTS_MSRCTL0 : Sensor filtering strategy * * Filters: * * 000 : One sample * 001 : Avg 2 samples * 010 : 4 samples, drop min and max, avg 2 samples * 011 : 6 samples, drop min and max, avg 4 samples * 100 : 10 samples, drop min and max, avg 8 samples * 101 : 18 samples, drop min and max, avg 16 samples * * Bits: * * 0-2 : Sensor0 filter * 3-5 : Sensor1 filter * 6-8 : Sensor2 filter * 9-11 : Sensor3 filter */ value = LVTS_HW_FILTER << 9 | LVTS_HW_FILTER << 6 | LVTS_HW_FILTER << 3 | LVTS_HW_FILTER; writel(value, LVTS_MSRCTL0(lvts_ctrl->base)); /* * LVTS_MONCTL1 : Period unit and group interval configuration * * The clock source of LVTS thermal controller is 26MHz. * * The period unit is a time base for all the interval delays * specified in the registers. By default we use 12. The time * conversion is done by multiplying by 256 and 1/26.10^6 * * An interval delay multiplied by the period unit gives the * duration in seconds. * * - Filter interval delay is a delay between two samples of * the same sensor. * * - Sensor interval delay is a delay between two samples of * different sensors. * * - Group interval delay is a delay between different rounds. * * For example: * If Period unit = C, filter delay = 1, sensor delay = 2, group delay = 1, * and two sensors, TS1 and TS2, are in a LVTS thermal controller * and then * Period unit time = C * 1/26M * 256 = 12 * 38.46ns * 256 = 118.149us * Filter interval delay = 1 * Period unit = 118.149us * Sensor interval delay = 2 * Period unit = 236.298us * Group interval delay = 1 * Period unit = 118.149us * * TS1 TS1 ... TS1 TS2 TS2 ... TS2 TS1... * <--> Filter interval delay * <--> Sensor interval delay * <--> Group interval delay * Bits: * 29 - 20 : Group interval * 16 - 13 : Send a single interrupt when crossing the hot threshold (1) * or an interrupt everytime the hot threshold is crossed (0) * 9 - 0 : Period unit * */ value = LVTS_GROUP_INTERVAL << 20 | LVTS_PERIOD_UNIT; writel(value, LVTS_MONCTL1(lvts_ctrl->base)); /* * LVTS_MONCTL2 : Filtering and sensor interval * * Bits: * * 25-16 : Interval unit in PERIOD_UNIT between sample on * the same sensor, filter interval * 9-0 : Interval unit in PERIOD_UNIT between each sensor * */ value = LVTS_FILTER_INTERVAL << 16 | LVTS_SENSOR_INTERVAL; writel(value, LVTS_MONCTL2(lvts_ctrl->base)); return lvts_irq_init(lvts_ctrl); } static int lvts_ctrl_start(struct device *dev, struct lvts_ctrl *lvts_ctrl) { struct lvts_sensor *lvts_sensors = lvts_ctrl->sensors; struct thermal_zone_device *tz; u32 sensor_map = 0; int i; /* * Bitmaps to enable each sensor on immediate and filtered modes, as * described in MSRCTL1 and MONCTL0 registers below, respectively. */ u32 sensor_imm_bitmap[] = { BIT(4), BIT(5), BIT(6), BIT(9) }; u32 sensor_filt_bitmap[] = { BIT(0), BIT(1), BIT(2), BIT(3) }; u32 *sensor_bitmap = lvts_ctrl->mode == LVTS_MSR_IMMEDIATE_MODE ? sensor_imm_bitmap : sensor_filt_bitmap; for (i = 0; i < lvts_ctrl->num_lvts_sensor; i++) { int dt_id = lvts_sensors[i].dt_id; tz = devm_thermal_of_zone_register(dev, dt_id, &lvts_sensors[i], &lvts_ops); if (IS_ERR(tz)) { /* * This thermal zone is not described in the * device tree. It is not an error from the * thermal OF code POV, we just continue. */ if (PTR_ERR(tz) == -ENODEV) continue; return PTR_ERR(tz); } devm_thermal_add_hwmon_sysfs(dev, tz); /* * The thermal zone pointer will be needed in the * interrupt handler, we store it in the sensor * structure. The thermal domain structure will be * passed to the interrupt handler private data as the * interrupt is shared for all the controller * belonging to the thermal domain. */ lvts_sensors[i].tz = tz; /* * This sensor was correctly associated with a thermal * zone, let's set the corresponding bit in the sensor * map, so we can enable the temperature monitoring in * the hardware thermal controller. */ sensor_map |= sensor_bitmap[i]; } /* * The initialization of the thermal zones give us * which sensor point to enable. If any thermal zone * was not described in the device tree, it won't be * enabled here in the sensor map. */ if (lvts_ctrl->mode == LVTS_MSR_IMMEDIATE_MODE) { /* * LVTS_MSRCTL1 : Measurement control * * Bits: * * 9: Ignore MSRCTL0 config and do immediate measurement on sensor3 * 6: Ignore MSRCTL0 config and do immediate measurement on sensor2 * 5: Ignore MSRCTL0 config and do immediate measurement on sensor1 * 4: Ignore MSRCTL0 config and do immediate measurement on sensor0 * * That configuration will ignore the filtering and the delays * introduced in MONCTL1 and MONCTL2 */ writel(sensor_map, LVTS_MSRCTL1(lvts_ctrl->base)); } else { /* * Bits: * 9: Single point access flow * 0-3: Enable sensing point 0-3 */ writel(sensor_map | BIT(9), LVTS_MONCTL0(lvts_ctrl->base)); } return 0; } static int lvts_domain_init(struct device *dev, struct lvts_domain *lvts_td, const struct lvts_data *lvts_data) { struct lvts_ctrl *lvts_ctrl; int i, ret; ret = lvts_ctrl_init(dev, lvts_td, lvts_data); if (ret) return ret; ret = lvts_domain_reset(dev, lvts_td->reset); if (ret) { dev_dbg(dev, "Failed to reset domain"); return ret; } for (i = 0; i < lvts_td->num_lvts_ctrl; i++) { lvts_ctrl = &lvts_td->lvts_ctrl[i]; /* * Initialization steps: * * - Enable the clock * - Connect to the LVTS * - Initialize the LVTS * - Prepare the calibration data * - Select monitored sensors * [ Configure sampling ] * [ Configure the interrupt ] * - Start measurement */ ret = lvts_ctrl_set_enable(lvts_ctrl, true); if (ret) { dev_dbg(dev, "Failed to enable LVTS clock"); return ret; } ret = lvts_ctrl_connect(dev, lvts_ctrl); if (ret) { dev_dbg(dev, "Failed to connect to LVTS controller"); return ret; } ret = lvts_ctrl_initialize(dev, lvts_ctrl); if (ret) { dev_dbg(dev, "Failed to initialize controller"); return ret; } ret = lvts_ctrl_calibrate(dev, lvts_ctrl); if (ret) { dev_dbg(dev, "Failed to calibrate controller"); return ret; } ret = lvts_ctrl_configure(dev, lvts_ctrl); if (ret) { dev_dbg(dev, "Failed to configure controller"); return ret; } ret = lvts_ctrl_start(dev, lvts_ctrl); if (ret) { dev_dbg(dev, "Failed to start controller"); return ret; } } return lvts_debugfs_init(dev, lvts_td); } static int lvts_probe(struct platform_device *pdev) { const struct lvts_data *lvts_data; struct lvts_domain *lvts_td; struct device *dev = &pdev->dev; struct resource *res; int irq, ret; lvts_td = devm_kzalloc(dev, sizeof(*lvts_td), GFP_KERNEL); if (!lvts_td) return -ENOMEM; lvts_data = of_device_get_match_data(dev); lvts_td->clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(lvts_td->clk)) return dev_err_probe(dev, PTR_ERR(lvts_td->clk), "Failed to retrieve clock\n"); res = platform_get_mem_or_io(pdev, 0); if (!res) return dev_err_probe(dev, (-ENXIO), "No IO resource\n"); lvts_td->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(lvts_td->base)) return dev_err_probe(dev, PTR_ERR(lvts_td->base), "Failed to map io resource\n"); lvts_td->reset = devm_reset_control_get_by_index(dev, 0); if (IS_ERR(lvts_td->reset)) return dev_err_probe(dev, PTR_ERR(lvts_td->reset), "Failed to get reset control\n"); irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; golden_temp_offset = lvts_data->temp_offset; ret = lvts_domain_init(dev, lvts_td, lvts_data); if (ret) return dev_err_probe(dev, ret, "Failed to initialize the lvts domain\n"); /* * At this point the LVTS is initialized and enabled. We can * safely enable the interrupt. */ ret = devm_request_threaded_irq(dev, irq, NULL, lvts_irq_handler, IRQF_ONESHOT, dev_name(dev), lvts_td); if (ret) return dev_err_probe(dev, ret, "Failed to request interrupt\n"); platform_set_drvdata(pdev, lvts_td); return 0; } static void lvts_remove(struct platform_device *pdev) { struct lvts_domain *lvts_td; int i; lvts_td = platform_get_drvdata(pdev); for (i = 0; i < lvts_td->num_lvts_ctrl; i++) lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false); lvts_debugfs_exit(lvts_td); } static const struct lvts_ctrl_data mt7988_lvts_ap_data_ctrl[] = { { .cal_offset = { 0x00, 0x04, 0x08, 0x0c }, .lvts_sensor = { { .dt_id = MT7988_CPU_0 }, { .dt_id = MT7988_CPU_1 }, { .dt_id = MT7988_ETH2P5G_0 }, { .dt_id = MT7988_ETH2P5G_1 } }, .num_lvts_sensor = 4, .offset = 0x0, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT7988, }, { .cal_offset = { 0x14, 0x18, 0x1c, 0x20 }, .lvts_sensor = { { .dt_id = MT7988_TOPS_0}, { .dt_id = MT7988_TOPS_1}, { .dt_id = MT7988_ETHWARP_0}, { .dt_id = MT7988_ETHWARP_1} }, .num_lvts_sensor = 4, .offset = 0x100, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT7988, } }; static int lvts_suspend(struct device *dev) { struct lvts_domain *lvts_td; int i; lvts_td = dev_get_drvdata(dev); for (i = 0; i < lvts_td->num_lvts_ctrl; i++) lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false); clk_disable_unprepare(lvts_td->clk); return 0; } static int lvts_resume(struct device *dev) { struct lvts_domain *lvts_td; int i, ret; lvts_td = dev_get_drvdata(dev); ret = clk_prepare_enable(lvts_td->clk); if (ret) return ret; for (i = 0; i < lvts_td->num_lvts_ctrl; i++) lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], true); return 0; } static const struct lvts_ctrl_data mt8192_lvts_mcu_data_ctrl[] = { { .cal_offset = { 0x04, 0x08 }, .lvts_sensor = { { .dt_id = MT8192_MCU_BIG_CPU0 }, { .dt_id = MT8192_MCU_BIG_CPU1 } }, .num_lvts_sensor = 2, .offset = 0x0, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, .mode = LVTS_MSR_FILTERED_MODE, }, { .cal_offset = { 0x0c, 0x10 }, .lvts_sensor = { { .dt_id = MT8192_MCU_BIG_CPU2 }, { .dt_id = MT8192_MCU_BIG_CPU3 } }, .num_lvts_sensor = 2, .offset = 0x100, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, .mode = LVTS_MSR_FILTERED_MODE, }, { .cal_offset = { 0x14, 0x18, 0x1c, 0x20 }, .lvts_sensor = { { .dt_id = MT8192_MCU_LITTLE_CPU0 }, { .dt_id = MT8192_MCU_LITTLE_CPU1 }, { .dt_id = MT8192_MCU_LITTLE_CPU2 }, { .dt_id = MT8192_MCU_LITTLE_CPU3 } }, .num_lvts_sensor = 4, .offset = 0x200, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, .mode = LVTS_MSR_FILTERED_MODE, } }; static const struct lvts_ctrl_data mt8192_lvts_ap_data_ctrl[] = { { .cal_offset = { 0x24, 0x28 }, .lvts_sensor = { { .dt_id = MT8192_AP_VPU0 }, { .dt_id = MT8192_AP_VPU1 } }, .num_lvts_sensor = 2, .offset = 0x0, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, }, { .cal_offset = { 0x2c, 0x30 }, .lvts_sensor = { { .dt_id = MT8192_AP_GPU0 }, { .dt_id = MT8192_AP_GPU1 } }, .num_lvts_sensor = 2, .offset = 0x100, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, }, { .cal_offset = { 0x34, 0x38 }, .lvts_sensor = { { .dt_id = MT8192_AP_INFRA }, { .dt_id = MT8192_AP_CAM }, }, .num_lvts_sensor = 2, .offset = 0x200, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, }, { .cal_offset = { 0x3c, 0x40, 0x44 }, .lvts_sensor = { { .dt_id = MT8192_AP_MD0 }, { .dt_id = MT8192_AP_MD1 }, { .dt_id = MT8192_AP_MD2 } }, .num_lvts_sensor = 3, .offset = 0x300, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8192, } }; static const struct lvts_ctrl_data mt8195_lvts_mcu_data_ctrl[] = { { .cal_offset = { 0x04, 0x07 }, .lvts_sensor = { { .dt_id = MT8195_MCU_BIG_CPU0 }, { .dt_id = MT8195_MCU_BIG_CPU1 } }, .num_lvts_sensor = 2, .offset = 0x0, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, }, { .cal_offset = { 0x0d, 0x10 }, .lvts_sensor = { { .dt_id = MT8195_MCU_BIG_CPU2 }, { .dt_id = MT8195_MCU_BIG_CPU3 } }, .num_lvts_sensor = 2, .offset = 0x100, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, }, { .cal_offset = { 0x16, 0x19, 0x1c, 0x1f }, .lvts_sensor = { { .dt_id = MT8195_MCU_LITTLE_CPU0 }, { .dt_id = MT8195_MCU_LITTLE_CPU1 }, { .dt_id = MT8195_MCU_LITTLE_CPU2 }, { .dt_id = MT8195_MCU_LITTLE_CPU3 } }, .num_lvts_sensor = 4, .offset = 0x200, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, } }; static const struct lvts_ctrl_data mt8195_lvts_ap_data_ctrl[] = { { .cal_offset = { 0x25, 0x28 }, .lvts_sensor = { { .dt_id = MT8195_AP_VPU0 }, { .dt_id = MT8195_AP_VPU1 } }, .num_lvts_sensor = 2, .offset = 0x0, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, }, { .cal_offset = { 0x2e, 0x31 }, .lvts_sensor = { { .dt_id = MT8195_AP_GPU0 }, { .dt_id = MT8195_AP_GPU1 } }, .num_lvts_sensor = 2, .offset = 0x100, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, }, { .cal_offset = { 0x37, 0x3a, 0x3d }, .lvts_sensor = { { .dt_id = MT8195_AP_VDEC }, { .dt_id = MT8195_AP_IMG }, { .dt_id = MT8195_AP_INFRA }, }, .num_lvts_sensor = 3, .offset = 0x200, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, }, { .cal_offset = { 0x43, 0x46 }, .lvts_sensor = { { .dt_id = MT8195_AP_CAM0 }, { .dt_id = MT8195_AP_CAM1 } }, .num_lvts_sensor = 2, .offset = 0x300, .hw_tshut_temp = LVTS_HW_SHUTDOWN_MT8195, } }; static const struct lvts_data mt7988_lvts_ap_data = { .lvts_ctrl = mt7988_lvts_ap_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt7988_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT7988, .temp_offset = LVTS_COEFF_B_MT7988, }; static const struct lvts_data mt8192_lvts_mcu_data = { .lvts_ctrl = mt8192_lvts_mcu_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8192_lvts_mcu_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct lvts_data mt8192_lvts_ap_data = { .lvts_ctrl = mt8192_lvts_ap_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8192_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct lvts_data mt8195_lvts_mcu_data = { .lvts_ctrl = mt8195_lvts_mcu_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_mcu_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct lvts_data mt8195_lvts_ap_data = { .lvts_ctrl = mt8195_lvts_ap_data_ctrl, .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, }; static const struct of_device_id lvts_of_match[] = { { .compatible = "mediatek,mt7988-lvts-ap", .data = &mt7988_lvts_ap_data }, { .compatible = "mediatek,mt8192-lvts-mcu", .data = &mt8192_lvts_mcu_data }, { .compatible = "mediatek,mt8192-lvts-ap", .data = &mt8192_lvts_ap_data }, { .compatible = "mediatek,mt8195-lvts-mcu", .data = &mt8195_lvts_mcu_data }, { .compatible = "mediatek,mt8195-lvts-ap", .data = &mt8195_lvts_ap_data }, {}, }; MODULE_DEVICE_TABLE(of, lvts_of_match); static const struct dev_pm_ops lvts_pm_ops = { NOIRQ_SYSTEM_SLEEP_PM_OPS(lvts_suspend, lvts_resume) }; static struct platform_driver lvts_driver = { .probe = lvts_probe, .remove_new = lvts_remove, .driver = { .name = "mtk-lvts-thermal", .of_match_table = lvts_of_match, .pm = &lvts_pm_ops, }, }; module_platform_driver(lvts_driver); MODULE_AUTHOR("Balsam CHIHI <bchihi@baylibre.com>"); MODULE_DESCRIPTION("MediaTek LVTS Thermal Driver"); MODULE_LICENSE("GPL"); |