Loading arch/arm64/configs/vendor/lahaina_QGKI.config +1 −0 Original line number Diff line number Diff line Loading @@ -132,6 +132,7 @@ CONFIG_QTI_CPU_VOLTAGE_COOLING_DEVICE=y CONFIG_QTI_POLICY_ENGINE_SENSOR=y CONFIG_QTI_SDPM_CLOCK_MONITOR=y CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=10000 CONFIG_QTI_DDR_COOLING_DEVICE=y CONFIG_SPS=y # CONFIG_SPS_SUPPORT_BAMDMA is not set CONFIG_SPS_SUPPORT_NDP_BAM=y Loading drivers/thermal/qcom/Kconfig +9 −0 Original line number Diff line number Diff line Loading @@ -154,3 +154,12 @@ config QTI_CPU_HOTPLUG_COOLING_DEVICE devices will be used by QTI chipset to hotplug a CPU to achieve thermal cooling. CPU Hotplug will be done after core isolation, to prevent any process from waking the mitigated CPU. config QTI_DDR_COOLING_DEVICE tristate "QTI DDR cooling devices" depends on THERMAL_OF && QTI_THERMAL && INTERCONNECT help This enables the QTI DDR cooling devices. These cooling devices will be used by QTI chipset to place a DDR state request to meet the performance requirement under thermally constrained conditions. drivers/thermal/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -23,3 +23,4 @@ obj-${CONFIG_QTI_SDPM_CLOCK_MONITOR} += sdpm_clk.o obj-$(CONFIG_REGULATOR_COOLING_DEVICE) += regulator_cdev.o obj-$(CONFIG_QTI_RPM_SMD_COOLING_DEVICE) += rpm_smd_cooling_device.o obj-$(CONFIG_QTI_LIMITS_ISENSE_CDSP) += msm_isense_cdsp.o obj-$(CONFIG_QTI_DDR_COOLING_DEVICE) += ddr_cdev.o drivers/thermal/qcom/ddr_cdev.c 0 → 100644 +208 −0 Original line number Diff line number Diff line // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2020, The Linux Foundation. All rights reserved. */ #include <linux/module.h> #include <linux/thermal.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/of_device.h> #include <linux/interconnect.h> #define DDR_CDEV_NAME "ddr-cdev" struct ddr_cdev { uint32_t cur_state; uint32_t max_state; struct thermal_cooling_device *cdev; struct icc_path *icc_path; struct device *dev; uint32_t *freq_table; uint32_t freq_table_size; }; /** * ddr_set_cur_state - callback function to set the ddr state. * @cdev: thermal cooling device pointer. * @state: set this variable to the current cooling state. * * Callback for the thermal cooling device to change the * DDR state. * * Return: 0 on success, an error code otherwise. */ static int ddr_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { struct ddr_cdev *ddr_cdev = cdev->devdata; int ret = 0; /* Request state should be less than max_level */ if (state > ddr_cdev->max_state) return -EINVAL; /* Check if the old cooling action is same as new cooling action */ if (ddr_cdev->cur_state == state) return 0; ret = icc_set_bw(ddr_cdev->icc_path, 0, ddr_cdev->freq_table[state]); if (ret < 0) { dev_err(ddr_cdev->dev, "Error placing DDR freq%u. err:%d\n", ddr_cdev->freq_table[state], ret); return ret; } ddr_cdev->cur_state = state; return ret; } /** * ddr_get_cur_state - callback function to get the current cooling * state. * @cdev: thermal cooling device pointer. * @state: fill this variable with the current cooling state. * * Callback for the thermal cooling device to return the * current DDR state request. * * Return: 0 on success, an error code otherwise. */ static int ddr_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state) { struct ddr_cdev *ddr_cdev = cdev->devdata; *state = ddr_cdev->cur_state; return 0; } /** * ddr_get_max_state - callback function to get the max cooling state. * @cdev: thermal cooling device pointer. * @state: fill this variable with the max cooling state. * * Callback for the thermal cooling device to return the DDR * max cooling state. * * Return: 0 on success, an error code otherwise. */ static int ddr_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { struct ddr_cdev *ddr_cdev = cdev->devdata; *state = ddr_cdev->max_state; return 0; } static struct thermal_cooling_device_ops ddr_cdev_ops = { .get_max_state = ddr_get_max_state, .get_cur_state = ddr_get_cur_state, .set_cur_state = ddr_set_cur_state, }; static int ddr_cdev_probe(struct platform_device *pdev) { int ret = 0, opp_ct = 0; struct ddr_cdev *ddr_cdev = NULL; struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; uint32_t *freq_table = NULL; char cdev_name[THERMAL_NAME_LENGTH] = DDR_CDEV_NAME; ddr_cdev = devm_kzalloc(dev, sizeof(*ddr_cdev), GFP_KERNEL); if (!ddr_cdev) return -ENOMEM; ddr_cdev->icc_path = of_icc_get(dev, NULL); if (IS_ERR(ddr_cdev->icc_path)) { ret = PTR_ERR(ddr_cdev->icc_path); if (ret != -EPROBE_DEFER) dev_err(dev, "Unable to register icc path: %d\n", ret); return ret; } opp_ct = of_property_count_elems_of_size(np, "qcom,ddr-freq", sizeof(u32)); if (opp_ct <= 0) { dev_err(dev, "No DDR frequency\n"); ret = -ENODEV; goto err_exit; } freq_table = devm_kcalloc(dev, opp_ct, sizeof(*freq_table), GFP_KERNEL); if (!freq_table) { ret = -ENOMEM; goto err_exit; } ret = of_property_read_u32_array(np, "qcom,ddr-freq", freq_table, opp_ct); if (ret < 0) { dev_err(dev, "DDR frequency read error:%d\n", ret); goto err_exit; } ddr_cdev->freq_table = freq_table; ddr_cdev->freq_table_size = opp_ct; ddr_cdev->cur_state = 0; ddr_cdev->max_state = opp_ct - 1; ddr_cdev->dev = dev; ret = icc_set_bw(ddr_cdev->icc_path, 0, freq_table[0]); if (ret < 0) { dev_err(dev, "Error placing DDR freq request. err:%d\n", ret); goto err_exit; } ddr_cdev->cdev = thermal_of_cooling_device_register(np, cdev_name, ddr_cdev, &ddr_cdev_ops); if (IS_ERR(ddr_cdev->cdev)) { ret = PTR_ERR(ddr_cdev->cdev); dev_err(dev, "Cdev register failed for %s, ret:%d\n", cdev_name, ret); goto err_exit; } dev_dbg(dev, "Cooling device [%s] registered.\n", cdev_name); dev_set_drvdata(dev, ddr_cdev); return 0; err_exit: icc_put(ddr_cdev->icc_path); return ret; } static int ddr_cdev_remove(struct platform_device *pdev) { struct ddr_cdev *ddr_cdev = (struct ddr_cdev *)dev_get_drvdata(&pdev->dev); if (ddr_cdev->cdev) { thermal_cooling_device_unregister(ddr_cdev->cdev); ddr_cdev->cdev = NULL; } if (ddr_cdev->icc_path) { icc_set_bw(ddr_cdev->icc_path, 0, ddr_cdev->freq_table[0]); icc_put(ddr_cdev->icc_path); ddr_cdev->icc_path = NULL; } return 0; } static const struct of_device_id ddr_cdev_match[] = { { .compatible = "qcom,ddr-cooling-device", }, {}, }; static struct platform_driver ddr_cdev_driver = { .probe = ddr_cdev_probe, .remove = ddr_cdev_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = ddr_cdev_match, }, }; module_platform_driver(ddr_cdev_driver); MODULE_LICENSE("GPL v2"); Loading
arch/arm64/configs/vendor/lahaina_QGKI.config +1 −0 Original line number Diff line number Diff line Loading @@ -132,6 +132,7 @@ CONFIG_QTI_CPU_VOLTAGE_COOLING_DEVICE=y CONFIG_QTI_POLICY_ENGINE_SENSOR=y CONFIG_QTI_SDPM_CLOCK_MONITOR=y CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=10000 CONFIG_QTI_DDR_COOLING_DEVICE=y CONFIG_SPS=y # CONFIG_SPS_SUPPORT_BAMDMA is not set CONFIG_SPS_SUPPORT_NDP_BAM=y Loading
drivers/thermal/qcom/Kconfig +9 −0 Original line number Diff line number Diff line Loading @@ -154,3 +154,12 @@ config QTI_CPU_HOTPLUG_COOLING_DEVICE devices will be used by QTI chipset to hotplug a CPU to achieve thermal cooling. CPU Hotplug will be done after core isolation, to prevent any process from waking the mitigated CPU. config QTI_DDR_COOLING_DEVICE tristate "QTI DDR cooling devices" depends on THERMAL_OF && QTI_THERMAL && INTERCONNECT help This enables the QTI DDR cooling devices. These cooling devices will be used by QTI chipset to place a DDR state request to meet the performance requirement under thermally constrained conditions.
drivers/thermal/qcom/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -23,3 +23,4 @@ obj-${CONFIG_QTI_SDPM_CLOCK_MONITOR} += sdpm_clk.o obj-$(CONFIG_REGULATOR_COOLING_DEVICE) += regulator_cdev.o obj-$(CONFIG_QTI_RPM_SMD_COOLING_DEVICE) += rpm_smd_cooling_device.o obj-$(CONFIG_QTI_LIMITS_ISENSE_CDSP) += msm_isense_cdsp.o obj-$(CONFIG_QTI_DDR_COOLING_DEVICE) += ddr_cdev.o
drivers/thermal/qcom/ddr_cdev.c 0 → 100644 +208 −0 Original line number Diff line number Diff line // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2020, The Linux Foundation. All rights reserved. */ #include <linux/module.h> #include <linux/thermal.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/of_device.h> #include <linux/interconnect.h> #define DDR_CDEV_NAME "ddr-cdev" struct ddr_cdev { uint32_t cur_state; uint32_t max_state; struct thermal_cooling_device *cdev; struct icc_path *icc_path; struct device *dev; uint32_t *freq_table; uint32_t freq_table_size; }; /** * ddr_set_cur_state - callback function to set the ddr state. * @cdev: thermal cooling device pointer. * @state: set this variable to the current cooling state. * * Callback for the thermal cooling device to change the * DDR state. * * Return: 0 on success, an error code otherwise. */ static int ddr_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { struct ddr_cdev *ddr_cdev = cdev->devdata; int ret = 0; /* Request state should be less than max_level */ if (state > ddr_cdev->max_state) return -EINVAL; /* Check if the old cooling action is same as new cooling action */ if (ddr_cdev->cur_state == state) return 0; ret = icc_set_bw(ddr_cdev->icc_path, 0, ddr_cdev->freq_table[state]); if (ret < 0) { dev_err(ddr_cdev->dev, "Error placing DDR freq%u. err:%d\n", ddr_cdev->freq_table[state], ret); return ret; } ddr_cdev->cur_state = state; return ret; } /** * ddr_get_cur_state - callback function to get the current cooling * state. * @cdev: thermal cooling device pointer. * @state: fill this variable with the current cooling state. * * Callback for the thermal cooling device to return the * current DDR state request. * * Return: 0 on success, an error code otherwise. */ static int ddr_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state) { struct ddr_cdev *ddr_cdev = cdev->devdata; *state = ddr_cdev->cur_state; return 0; } /** * ddr_get_max_state - callback function to get the max cooling state. * @cdev: thermal cooling device pointer. * @state: fill this variable with the max cooling state. * * Callback for the thermal cooling device to return the DDR * max cooling state. * * Return: 0 on success, an error code otherwise. */ static int ddr_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { struct ddr_cdev *ddr_cdev = cdev->devdata; *state = ddr_cdev->max_state; return 0; } static struct thermal_cooling_device_ops ddr_cdev_ops = { .get_max_state = ddr_get_max_state, .get_cur_state = ddr_get_cur_state, .set_cur_state = ddr_set_cur_state, }; static int ddr_cdev_probe(struct platform_device *pdev) { int ret = 0, opp_ct = 0; struct ddr_cdev *ddr_cdev = NULL; struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; uint32_t *freq_table = NULL; char cdev_name[THERMAL_NAME_LENGTH] = DDR_CDEV_NAME; ddr_cdev = devm_kzalloc(dev, sizeof(*ddr_cdev), GFP_KERNEL); if (!ddr_cdev) return -ENOMEM; ddr_cdev->icc_path = of_icc_get(dev, NULL); if (IS_ERR(ddr_cdev->icc_path)) { ret = PTR_ERR(ddr_cdev->icc_path); if (ret != -EPROBE_DEFER) dev_err(dev, "Unable to register icc path: %d\n", ret); return ret; } opp_ct = of_property_count_elems_of_size(np, "qcom,ddr-freq", sizeof(u32)); if (opp_ct <= 0) { dev_err(dev, "No DDR frequency\n"); ret = -ENODEV; goto err_exit; } freq_table = devm_kcalloc(dev, opp_ct, sizeof(*freq_table), GFP_KERNEL); if (!freq_table) { ret = -ENOMEM; goto err_exit; } ret = of_property_read_u32_array(np, "qcom,ddr-freq", freq_table, opp_ct); if (ret < 0) { dev_err(dev, "DDR frequency read error:%d\n", ret); goto err_exit; } ddr_cdev->freq_table = freq_table; ddr_cdev->freq_table_size = opp_ct; ddr_cdev->cur_state = 0; ddr_cdev->max_state = opp_ct - 1; ddr_cdev->dev = dev; ret = icc_set_bw(ddr_cdev->icc_path, 0, freq_table[0]); if (ret < 0) { dev_err(dev, "Error placing DDR freq request. err:%d\n", ret); goto err_exit; } ddr_cdev->cdev = thermal_of_cooling_device_register(np, cdev_name, ddr_cdev, &ddr_cdev_ops); if (IS_ERR(ddr_cdev->cdev)) { ret = PTR_ERR(ddr_cdev->cdev); dev_err(dev, "Cdev register failed for %s, ret:%d\n", cdev_name, ret); goto err_exit; } dev_dbg(dev, "Cooling device [%s] registered.\n", cdev_name); dev_set_drvdata(dev, ddr_cdev); return 0; err_exit: icc_put(ddr_cdev->icc_path); return ret; } static int ddr_cdev_remove(struct platform_device *pdev) { struct ddr_cdev *ddr_cdev = (struct ddr_cdev *)dev_get_drvdata(&pdev->dev); if (ddr_cdev->cdev) { thermal_cooling_device_unregister(ddr_cdev->cdev); ddr_cdev->cdev = NULL; } if (ddr_cdev->icc_path) { icc_set_bw(ddr_cdev->icc_path, 0, ddr_cdev->freq_table[0]); icc_put(ddr_cdev->icc_path); ddr_cdev->icc_path = NULL; } return 0; } static const struct of_device_id ddr_cdev_match[] = { { .compatible = "qcom,ddr-cooling-device", }, {}, }; static struct platform_driver ddr_cdev_driver = { .probe = ddr_cdev_probe, .remove = ddr_cdev_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = ddr_cdev_match, }, }; module_platform_driver(ddr_cdev_driver); MODULE_LICENSE("GPL v2");
