Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Srinivas Pandruvada | 1034 | 31.40% | 11 | 21.15% |
Rui Zhang | 932 | 28.30% | 4 | 7.69% |
Matthew Garrett | 840 | 25.51% | 4 | 7.69% |
Brian Bian | 182 | 5.53% | 2 | 3.85% |
Jacob jun Pan | 105 | 3.19% | 1 | 1.92% |
Sumeet Pawnikar | 38 | 1.15% | 3 | 5.77% |
Chuansheng Liu | 32 | 0.97% | 1 | 1.92% |
Daniel Lezcano | 25 | 0.76% | 3 | 5.77% |
Davidlohr Bueso A | 16 | 0.49% | 2 | 3.85% |
Chun-Yi Lee | 14 | 0.43% | 1 | 1.92% |
Wolfram Sang | 10 | 0.30% | 1 | 1.92% |
Andy Shevchenko | 9 | 0.27% | 1 | 1.92% |
Gayatri Kammela | 7 | 0.21% | 2 | 3.85% |
Kees Cook | 7 | 0.21% | 1 | 1.92% |
Bartosz Szczepanek | 7 | 0.21% | 1 | 1.92% |
Jiasheng Jiang | 6 | 0.18% | 1 | 1.92% |
Andrzej Pietrasiewicz | 6 | 0.18% | 2 | 3.85% |
Alexey Khoroshilov | 5 | 0.15% | 1 | 1.92% |
Christoph Hellwig | 4 | 0.12% | 1 | 1.92% |
Arvind Yadav | 3 | 0.09% | 1 | 1.92% |
Uwe Kleine-König | 2 | 0.06% | 1 | 1.92% |
ye xingchen | 2 | 0.06% | 1 | 1.92% |
Thomas Gleixner | 2 | 0.06% | 1 | 1.92% |
Rafael J. Wysocki | 2 | 0.06% | 2 | 3.85% |
Julia Lawall | 1 | 0.03% | 1 | 1.92% |
Lukas Wunner | 1 | 0.03% | 1 | 1.92% |
Sascha Hauer | 1 | 0.03% | 1 | 1.92% |
Total | 3293 | 52 |
// SPDX-License-Identifier: GPL-2.0-only /* * INT3400 thermal driver * * Copyright (C) 2014, Intel Corporation * Authors: Zhang Rui <rui.zhang@intel.com> */ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/acpi.h> #include <linux/thermal.h> #include "acpi_thermal_rel.h" #define INT3400_THERMAL_TABLE_CHANGED 0x83 #define INT3400_ODVP_CHANGED 0x88 #define INT3400_KEEP_ALIVE 0xA0 #define INT3400_FAKE_TEMP (20 * 1000) /* faked temp sensor with 20C */ enum int3400_thermal_uuid { INT3400_THERMAL_ACTIVE = 0, INT3400_THERMAL_PASSIVE_1, INT3400_THERMAL_CRITICAL, INT3400_THERMAL_ADAPTIVE_PERFORMANCE, INT3400_THERMAL_EMERGENCY_CALL_MODE, INT3400_THERMAL_PASSIVE_2, INT3400_THERMAL_POWER_BOSS, INT3400_THERMAL_VIRTUAL_SENSOR, INT3400_THERMAL_COOLING_MODE, INT3400_THERMAL_HARDWARE_DUTY_CYCLING, INT3400_THERMAL_MAXIMUM_UUID, }; static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = { "3A95C389-E4B8-4629-A526-C52C88626BAE", "42A441D6-AE6A-462b-A84B-4A8CE79027D3", "97C68AE7-15FA-499c-B8C9-5DA81D606E0A", "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D", "5349962F-71E6-431D-9AE8-0A635B710AEE", "9E04115A-AE87-4D1C-9500-0F3E340BFE75", "F5A35014-C209-46A4-993A-EB56DE7530A1", "6ED722A7-9240-48A5-B479-31EEF723D7CF", "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531", "BE84BABF-C4D4-403D-B495-3128FD44dAC1", }; struct odvp_attr; struct int3400_thermal_priv { struct acpi_device *adev; struct platform_device *pdev; struct thermal_zone_device *thermal; int art_count; struct art *arts; int trt_count; struct trt *trts; u32 uuid_bitmap; int rel_misc_dev_res; int current_uuid_index; char *data_vault; int odvp_count; int *odvp; u32 os_uuid_mask; int production_mode; struct odvp_attr *odvp_attrs; }; static int evaluate_odvp(struct int3400_thermal_priv *priv); struct odvp_attr { int odvp; struct int3400_thermal_priv *priv; struct device_attribute attr; }; static BIN_ATTR_SIMPLE_RO(data_vault); static struct bin_attribute *data_attributes[] = { &bin_attr_data_vault, NULL, }; static ssize_t imok_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct int3400_thermal_priv *priv = dev_get_drvdata(dev); acpi_status status; int input, ret; ret = kstrtouint(buf, 10, &input); if (ret) return ret; status = acpi_execute_simple_method(priv->adev->handle, "IMOK", input); if (ACPI_FAILURE(status)) return -EIO; return count; } static DEVICE_ATTR_WO(imok); static struct attribute *imok_attr[] = { &dev_attr_imok.attr, NULL }; static const struct attribute_group imok_attribute_group = { .attrs = imok_attr, }; static const struct attribute_group data_attribute_group = { .bin_attrs = data_attributes, }; static ssize_t available_uuids_show(struct device *dev, struct device_attribute *attr, char *buf) { struct int3400_thermal_priv *priv = dev_get_drvdata(dev); int i; int length = 0; if (!priv->uuid_bitmap) return sprintf(buf, "UNKNOWN\n"); for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) { if (priv->uuid_bitmap & (1 << i)) length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]); } return length; } static ssize_t current_uuid_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct int3400_thermal_priv *priv = dev_get_drvdata(dev); int i, length = 0; if (priv->current_uuid_index > 0) return sprintf(buf, "%s\n", int3400_thermal_uuids[priv->current_uuid_index]); for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) { if (priv->os_uuid_mask & BIT(i)) length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]); } if (length) return length; return sprintf(buf, "INVALID\n"); } static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable) { u32 ret, buf[2]; acpi_status status; int result = 0; struct acpi_osc_context context = { .uuid_str = uuid_str, .rev = 1, .cap.length = 8, .cap.pointer = buf, }; buf[OSC_QUERY_DWORD] = 0; buf[OSC_SUPPORT_DWORD] = *enable; status = acpi_run_osc(handle, &context); if (ACPI_SUCCESS(status)) { ret = *((u32 *)(context.ret.pointer + 4)); if (ret != *enable) result = -EPERM; kfree(context.ret.pointer); } else result = -EPERM; return result; } static int set_os_uuid_mask(struct int3400_thermal_priv *priv, u32 mask) { int cap = 0; /* * Capability bits: * Bit 0: set to 1 to indicate DPTF is active * Bi1 1: set to 1 to active cooling is supported by user space daemon * Bit 2: set to 1 to passive cooling is supported by user space daemon * Bit 3: set to 1 to critical trip is handled by user space daemon */ if (mask) cap = (priv->os_uuid_mask << 1) | 0x01; return int3400_thermal_run_osc(priv->adev->handle, "b23ba85d-c8b7-3542-88de-8de2ffcfd698", &cap); } static ssize_t current_uuid_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct int3400_thermal_priv *priv = dev_get_drvdata(dev); int ret, i; for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) { if (!strncmp(buf, int3400_thermal_uuids[i], sizeof(int3400_thermal_uuids[i]) - 1)) { /* * If we have a list of supported UUIDs, make sure * this one is supported. */ if (priv->uuid_bitmap & BIT(i)) { priv->current_uuid_index = i; return count; } /* * There is support of only 3 policies via the new * _OSC to inform OS capability: * INT3400_THERMAL_ACTIVE * INT3400_THERMAL_PASSIVE_1 * INT3400_THERMAL_CRITICAL */ if (i > INT3400_THERMAL_CRITICAL) return -EINVAL; priv->os_uuid_mask |= BIT(i); break; } } if (priv->os_uuid_mask) { ret = set_os_uuid_mask(priv, priv->os_uuid_mask); if (ret) return ret; } return count; } static DEVICE_ATTR_RW(current_uuid); static DEVICE_ATTR_RO(available_uuids); static struct attribute *uuid_attrs[] = { &dev_attr_available_uuids.attr, &dev_attr_current_uuid.attr, NULL }; static const struct attribute_group uuid_attribute_group = { .attrs = uuid_attrs, .name = "uuids" }; static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv) { struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL}; union acpi_object *obja, *objb; int i, j; int result = 0; acpi_status status; status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf); if (ACPI_FAILURE(status)) return -ENODEV; obja = (union acpi_object *)buf.pointer; if (obja->type != ACPI_TYPE_PACKAGE) { result = -EINVAL; goto end; } for (i = 0; i < obja->package.count; i++) { objb = &obja->package.elements[i]; if (objb->type != ACPI_TYPE_BUFFER) { result = -EINVAL; goto end; } /* UUID must be 16 bytes */ if (objb->buffer.length != 16) { result = -EINVAL; goto end; } for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) { guid_t guid; guid_parse(int3400_thermal_uuids[j], &guid); if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) { priv->uuid_bitmap |= (1 << j); break; } } } end: kfree(buf.pointer); return result; } static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct int3400_thermal_priv *priv = dev_get_drvdata(dev); return sysfs_emit(buf, "%d\n", priv->production_mode); } static DEVICE_ATTR_RO(production_mode); static int production_mode_init(struct int3400_thermal_priv *priv) { unsigned long long mode; acpi_status status; int ret; priv->production_mode = -1; status = acpi_evaluate_integer(priv->adev->handle, "DCFG", NULL, &mode); /* If the method is not present, this is not an error */ if (ACPI_FAILURE(status)) return 0; ret = sysfs_create_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr); if (ret) return ret; priv->production_mode = mode; return 0; } static void production_mode_exit(struct int3400_thermal_priv *priv) { if (priv->production_mode >= 0) sysfs_remove_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr); } static ssize_t odvp_show(struct device *dev, struct device_attribute *attr, char *buf) { struct odvp_attr *odvp_attr; odvp_attr = container_of(attr, struct odvp_attr, attr); return sprintf(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]); } static void cleanup_odvp(struct int3400_thermal_priv *priv) { int i; if (priv->odvp_attrs) { for (i = 0; i < priv->odvp_count; i++) { sysfs_remove_file(&priv->pdev->dev.kobj, &priv->odvp_attrs[i].attr.attr); kfree(priv->odvp_attrs[i].attr.attr.name); } kfree(priv->odvp_attrs); } kfree(priv->odvp); priv->odvp_count = 0; } static int evaluate_odvp(struct int3400_thermal_priv *priv) { struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj = NULL; acpi_status status; int i, ret; status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp); if (ACPI_FAILURE(status)) { ret = -EINVAL; goto out_err; } obj = odvp.pointer; if (obj->type != ACPI_TYPE_PACKAGE) { ret = -EINVAL; goto out_err; } if (priv->odvp == NULL) { priv->odvp_count = obj->package.count; priv->odvp = kmalloc_array(priv->odvp_count, sizeof(int), GFP_KERNEL); if (!priv->odvp) { ret = -ENOMEM; goto out_err; } } if (priv->odvp_attrs == NULL) { priv->odvp_attrs = kcalloc(priv->odvp_count, sizeof(struct odvp_attr), GFP_KERNEL); if (!priv->odvp_attrs) { ret = -ENOMEM; goto out_err; } for (i = 0; i < priv->odvp_count; i++) { struct odvp_attr *odvp = &priv->odvp_attrs[i]; sysfs_attr_init(&odvp->attr.attr); odvp->priv = priv; odvp->odvp = i; odvp->attr.attr.name = kasprintf(GFP_KERNEL, "odvp%d", i); if (!odvp->attr.attr.name) { ret = -ENOMEM; goto out_err; } odvp->attr.attr.mode = 0444; odvp->attr.show = odvp_show; odvp->attr.store = NULL; ret = sysfs_create_file(&priv->pdev->dev.kobj, &odvp->attr.attr); if (ret) goto out_err; } } for (i = 0; i < obj->package.count; i++) { if (obj->package.elements[i].type == ACPI_TYPE_INTEGER) priv->odvp[i] = obj->package.elements[i].integer.value; } kfree(obj); return 0; out_err: cleanup_odvp(priv); kfree(obj); return ret; } static void int3400_notify(acpi_handle handle, u32 event, void *data) { struct int3400_thermal_priv *priv = data; struct device *dev; char *thermal_prop[5]; int therm_event; if (!priv) return; switch (event) { case INT3400_THERMAL_TABLE_CHANGED: therm_event = THERMAL_TABLE_CHANGED; break; case INT3400_KEEP_ALIVE: therm_event = THERMAL_EVENT_KEEP_ALIVE; break; case INT3400_ODVP_CHANGED: evaluate_odvp(priv); therm_event = THERMAL_DEVICE_POWER_CAPABILITY_CHANGED; break; default: /* Ignore unknown notification codes sent to INT3400 device */ return; } dev = thermal_zone_device(priv->thermal); thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", thermal_zone_device_type(priv->thermal)); thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", INT3400_FAKE_TEMP); thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP="); thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", therm_event); thermal_prop[4] = NULL; kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, thermal_prop); kfree(thermal_prop[0]); kfree(thermal_prop[1]); kfree(thermal_prop[2]); kfree(thermal_prop[3]); } static int int3400_thermal_get_temp(struct thermal_zone_device *thermal, int *temp) { *temp = INT3400_FAKE_TEMP; return 0; } static int int3400_thermal_change_mode(struct thermal_zone_device *thermal, enum thermal_device_mode mode) { struct int3400_thermal_priv *priv = thermal_zone_device_priv(thermal); int result = 0; int enabled; if (!priv) return -EINVAL; enabled = mode == THERMAL_DEVICE_ENABLED; if (priv->os_uuid_mask) { if (!enabled) { priv->os_uuid_mask = 0; result = set_os_uuid_mask(priv, priv->os_uuid_mask); } goto eval_odvp; } if (priv->current_uuid_index < 0 || priv->current_uuid_index >= INT3400_THERMAL_MAXIMUM_UUID) return -EINVAL; result = int3400_thermal_run_osc(priv->adev->handle, int3400_thermal_uuids[priv->current_uuid_index], &enabled); eval_odvp: evaluate_odvp(priv); return result; } static struct thermal_zone_device_ops int3400_thermal_ops = { .get_temp = int3400_thermal_get_temp, .change_mode = int3400_thermal_change_mode, }; static struct thermal_zone_params int3400_thermal_params = { .governor_name = "user_space", .no_hwmon = true, }; static void int3400_setup_gddv(struct int3400_thermal_priv *priv) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; acpi_status status; status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL, &buffer); if (ACPI_FAILURE(status) || !buffer.length) return; obj = buffer.pointer; if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1 || obj->package.elements[0].type != ACPI_TYPE_BUFFER) goto out_free; priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer, obj->package.elements[0].buffer.length, GFP_KERNEL); if (ZERO_OR_NULL_PTR(priv->data_vault)) goto out_free; bin_attr_data_vault.private = priv->data_vault; bin_attr_data_vault.size = obj->package.elements[0].buffer.length; out_free: kfree(buffer.pointer); } static int int3400_thermal_probe(struct platform_device *pdev) { struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); struct int3400_thermal_priv *priv; int result; if (!adev) return -ENODEV; priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->pdev = pdev; priv->adev = adev; result = int3400_thermal_get_uuids(priv); /* Missing IDSP isn't fatal */ if (result && result != -ENODEV) goto free_priv; priv->current_uuid_index = -1; result = acpi_parse_art(priv->adev->handle, &priv->art_count, &priv->arts, true); if (result) dev_dbg(&pdev->dev, "_ART table parsing error\n"); result = acpi_parse_trt(priv->adev->handle, &priv->trt_count, &priv->trts, true); if (result) dev_dbg(&pdev->dev, "_TRT table parsing error\n"); platform_set_drvdata(pdev, priv); int3400_setup_gddv(priv); evaluate_odvp(priv); priv->thermal = thermal_tripless_zone_device_register("INT3400 Thermal", priv, &int3400_thermal_ops, &int3400_thermal_params); if (IS_ERR(priv->thermal)) { result = PTR_ERR(priv->thermal); goto free_art_trt; } priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add( priv->adev->handle); result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group); if (result) goto free_rel_misc; if (acpi_has_method(priv->adev->handle, "IMOK")) { result = sysfs_create_group(&pdev->dev.kobj, &imok_attribute_group); if (result) goto free_imok; } if (!ZERO_OR_NULL_PTR(priv->data_vault)) { result = sysfs_create_group(&pdev->dev.kobj, &data_attribute_group); if (result) goto free_uuid; } result = acpi_install_notify_handler( priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify, (void *)priv); if (result) goto free_sysfs; result = production_mode_init(priv); if (result) goto free_notify; return 0; free_notify: acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify); free_sysfs: cleanup_odvp(priv); if (!ZERO_OR_NULL_PTR(priv->data_vault)) { sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group); kfree(priv->data_vault); } free_uuid: sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group); free_imok: sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group); free_rel_misc: if (!priv->rel_misc_dev_res) acpi_thermal_rel_misc_device_remove(priv->adev->handle); thermal_zone_device_unregister(priv->thermal); free_art_trt: kfree(priv->trts); kfree(priv->arts); free_priv: kfree(priv); return result; } static void int3400_thermal_remove(struct platform_device *pdev) { struct int3400_thermal_priv *priv = platform_get_drvdata(pdev); production_mode_exit(priv); acpi_remove_notify_handler( priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify); cleanup_odvp(priv); if (!priv->rel_misc_dev_res) acpi_thermal_rel_misc_device_remove(priv->adev->handle); if (!ZERO_OR_NULL_PTR(priv->data_vault)) sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group); sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group); sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group); thermal_zone_device_unregister(priv->thermal); kfree(priv->data_vault); kfree(priv->trts); kfree(priv->arts); kfree(priv); } static const struct acpi_device_id int3400_thermal_match[] = { {"INT3400", 0}, {"INTC1040", 0}, {"INTC1041", 0}, {"INTC1042", 0}, {"INTC1068", 0}, {"INTC10A0", 0}, {} }; MODULE_DEVICE_TABLE(acpi, int3400_thermal_match); static struct platform_driver int3400_thermal_driver = { .probe = int3400_thermal_probe, .remove_new = int3400_thermal_remove, .driver = { .name = "int3400 thermal", .acpi_match_table = ACPI_PTR(int3400_thermal_match), }, }; module_platform_driver(int3400_thermal_driver); MODULE_DESCRIPTION("INT3400 Thermal driver"); MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>"); MODULE_LICENSE("GPL");
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