[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/thermal/hisi_thermal.c b/src/kernel/linux/v4.19/drivers/thermal/hisi_thermal.c
new file mode 100644
index 0000000..761d055
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/thermal/hisi_thermal.c
@@ -0,0 +1,627 @@
+/*
+ * Hisilicon thermal sensor driver
+ *
+ * Copyright (c) 2014-2015 Hisilicon Limited.
+ * Copyright (c) 2014-2015 Linaro Limited.
+ *
+ * Xinwei Kong <kong.kongxinwei@hisilicon.com>
+ * Leo Yan <leo.yan@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/cpufreq.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+
+#include "thermal_core.h"
+
+#define HI6220_TEMP0_LAG (0x0)
+#define HI6220_TEMP0_TH (0x4)
+#define HI6220_TEMP0_RST_TH (0x8)
+#define HI6220_TEMP0_CFG (0xC)
+#define HI6220_TEMP0_CFG_SS_MSK (0xF000)
+#define HI6220_TEMP0_CFG_HDAK_MSK (0x30)
+#define HI6220_TEMP0_EN (0x10)
+#define HI6220_TEMP0_INT_EN (0x14)
+#define HI6220_TEMP0_INT_CLR (0x18)
+#define HI6220_TEMP0_RST_MSK (0x1C)
+#define HI6220_TEMP0_VALUE (0x28)
+
+#define HI3660_OFFSET(chan) ((chan) * 0x40)
+#define HI3660_TEMP(chan) (HI3660_OFFSET(chan) + 0x1C)
+#define HI3660_TH(chan) (HI3660_OFFSET(chan) + 0x20)
+#define HI3660_LAG(chan) (HI3660_OFFSET(chan) + 0x28)
+#define HI3660_INT_EN(chan) (HI3660_OFFSET(chan) + 0x2C)
+#define HI3660_INT_CLR(chan) (HI3660_OFFSET(chan) + 0x30)
+
+#define HI6220_TEMP_BASE (-60000)
+#define HI6220_TEMP_RESET (100000)
+#define HI6220_TEMP_STEP (785)
+#define HI6220_TEMP_LAG (3500)
+
+#define HI3660_TEMP_BASE (-63780)
+#define HI3660_TEMP_STEP (205)
+#define HI3660_TEMP_LAG (4000)
+
+#define HI6220_DEFAULT_SENSOR 2
+#define HI3660_DEFAULT_SENSOR 1
+
+struct hisi_thermal_sensor {
+ struct thermal_zone_device *tzd;
+ uint32_t id;
+ uint32_t thres_temp;
+};
+
+struct hisi_thermal_data {
+ int (*get_temp)(struct hisi_thermal_data *data);
+ int (*enable_sensor)(struct hisi_thermal_data *data);
+ int (*disable_sensor)(struct hisi_thermal_data *data);
+ int (*irq_handler)(struct hisi_thermal_data *data);
+ struct platform_device *pdev;
+ struct clk *clk;
+ struct hisi_thermal_sensor sensor;
+ void __iomem *regs;
+ int irq;
+};
+
+/*
+ * The temperature computation on the tsensor is as follow:
+ * Unit: millidegree Celsius
+ * Step: 200/255 (0.7843)
+ * Temperature base: -60°C
+ *
+ * The register is programmed in temperature steps, every step is 785
+ * millidegree and begins at -60 000 m°C
+ *
+ * The temperature from the steps:
+ *
+ * Temp = TempBase + (steps x 785)
+ *
+ * and the steps from the temperature:
+ *
+ * steps = (Temp - TempBase) / 785
+ *
+ */
+static inline int hi6220_thermal_step_to_temp(int step)
+{
+ return HI6220_TEMP_BASE + (step * HI6220_TEMP_STEP);
+}
+
+static inline int hi6220_thermal_temp_to_step(int temp)
+{
+ return DIV_ROUND_UP(temp - HI6220_TEMP_BASE, HI6220_TEMP_STEP);
+}
+
+/*
+ * for Hi3660,
+ * Step: 189/922 (0.205)
+ * Temperature base: -63.780°C
+ *
+ * The register is programmed in temperature steps, every step is 205
+ * millidegree and begins at -63 780 m°C
+ */
+static inline int hi3660_thermal_step_to_temp(int step)
+{
+ return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
+}
+
+static inline int hi3660_thermal_temp_to_step(int temp)
+{
+ return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
+}
+
+/*
+ * The lag register contains 5 bits encoding the temperature in steps.
+ *
+ * Each time the temperature crosses the threshold boundary, an
+ * interrupt is raised. It could be when the temperature is going
+ * above the threshold or below. However, if the temperature is
+ * fluctuating around this value due to the load, we can receive
+ * several interrupts which may not desired.
+ *
+ * We can setup a temperature representing the delta between the
+ * threshold and the current temperature when the temperature is
+ * decreasing.
+ *
+ * For instance: the lag register is 5°C, the threshold is 65°C, when
+ * the temperature reaches 65°C an interrupt is raised and when the
+ * temperature decrease to 65°C - 5°C another interrupt is raised.
+ *
+ * A very short lag can lead to an interrupt storm, a long lag
+ * increase the latency to react to the temperature changes. In our
+ * case, that is not really a problem as we are polling the
+ * temperature.
+ *
+ * [0:4] : lag register
+ *
+ * The temperature is coded in steps, cf. HI6220_TEMP_STEP.
+ *
+ * Min : 0x00 : 0.0 °C
+ * Max : 0x1F : 24.3 °C
+ *
+ * The 'value' parameter is in milliCelsius.
+ */
+static inline void hi6220_thermal_set_lag(void __iomem *addr, int value)
+{
+ writel(DIV_ROUND_UP(value, HI6220_TEMP_STEP) & 0x1F,
+ addr + HI6220_TEMP0_LAG);
+}
+
+static inline void hi6220_thermal_alarm_clear(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_INT_CLR);
+}
+
+static inline void hi6220_thermal_alarm_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_INT_EN);
+}
+
+static inline void hi6220_thermal_alarm_set(void __iomem *addr, int temp)
+{
+ writel(hi6220_thermal_temp_to_step(temp) | 0x0FFFFFF00,
+ addr + HI6220_TEMP0_TH);
+}
+
+static inline void hi6220_thermal_reset_set(void __iomem *addr, int temp)
+{
+ writel(hi6220_thermal_temp_to_step(temp), addr + HI6220_TEMP0_RST_TH);
+}
+
+static inline void hi6220_thermal_reset_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_RST_MSK);
+}
+
+static inline void hi6220_thermal_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_EN);
+}
+
+static inline int hi6220_thermal_get_temperature(void __iomem *addr)
+{
+ return hi6220_thermal_step_to_temp(readl(addr + HI6220_TEMP0_VALUE));
+}
+
+/*
+ * [0:6] lag register
+ *
+ * The temperature is coded in steps, cf. HI3660_TEMP_STEP.
+ *
+ * Min : 0x00 : 0.0 °C
+ * Max : 0x7F : 26.0 °C
+ *
+ */
+static inline void hi3660_thermal_set_lag(void __iomem *addr,
+ int id, int value)
+{
+ writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,
+ addr + HI3660_LAG(id));
+}
+
+static inline void hi3660_thermal_alarm_clear(void __iomem *addr,
+ int id, int value)
+{
+ writel(value, addr + HI3660_INT_CLR(id));
+}
+
+static inline void hi3660_thermal_alarm_enable(void __iomem *addr,
+ int id, int value)
+{
+ writel(value, addr + HI3660_INT_EN(id));
+}
+
+static inline void hi3660_thermal_alarm_set(void __iomem *addr,
+ int id, int value)
+{
+ writel(value, addr + HI3660_TH(id));
+}
+
+static inline int hi3660_thermal_get_temperature(void __iomem *addr, int id)
+{
+ return hi3660_thermal_step_to_temp(readl(addr + HI3660_TEMP(id)));
+}
+
+/*
+ * Temperature configuration register - Sensor selection
+ *
+ * Bits [19:12]
+ *
+ * 0x0: local sensor (default)
+ * 0x1: remote sensor 1 (ACPU cluster 1)
+ * 0x2: remote sensor 2 (ACPU cluster 0)
+ * 0x3: remote sensor 3 (G3D)
+ */
+static inline void hi6220_thermal_sensor_select(void __iomem *addr, int sensor)
+{
+ writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_SS_MSK) |
+ (sensor << 12), addr + HI6220_TEMP0_CFG);
+}
+
+/*
+ * Temperature configuration register - Hdak conversion polling interval
+ *
+ * Bits [5:4]
+ *
+ * 0x0 : 0.768 ms
+ * 0x1 : 6.144 ms
+ * 0x2 : 49.152 ms
+ * 0x3 : 393.216 ms
+ */
+static inline void hi6220_thermal_hdak_set(void __iomem *addr, int value)
+{
+ writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_HDAK_MSK) |
+ (value << 4), addr + HI6220_TEMP0_CFG);
+}
+
+static int hi6220_thermal_irq_handler(struct hisi_thermal_data *data)
+{
+ hi6220_thermal_alarm_clear(data->regs, 1);
+ return 0;
+}
+
+static int hi3660_thermal_irq_handler(struct hisi_thermal_data *data)
+{
+ hi3660_thermal_alarm_clear(data->regs, data->sensor.id, 1);
+ return 0;
+}
+
+static int hi6220_thermal_get_temp(struct hisi_thermal_data *data)
+{
+ return hi6220_thermal_get_temperature(data->regs);
+}
+
+static int hi3660_thermal_get_temp(struct hisi_thermal_data *data)
+{
+ return hi3660_thermal_get_temperature(data->regs, data->sensor.id);
+}
+
+static int hi6220_thermal_disable_sensor(struct hisi_thermal_data *data)
+{
+ /* disable sensor module */
+ hi6220_thermal_enable(data->regs, 0);
+ hi6220_thermal_alarm_enable(data->regs, 0);
+ hi6220_thermal_reset_enable(data->regs, 0);
+
+ clk_disable_unprepare(data->clk);
+
+ return 0;
+}
+
+static int hi3660_thermal_disable_sensor(struct hisi_thermal_data *data)
+{
+ /* disable sensor module */
+ hi3660_thermal_alarm_enable(data->regs, data->sensor.id, 0);
+ return 0;
+}
+
+static int hi6220_thermal_enable_sensor(struct hisi_thermal_data *data)
+{
+ struct hisi_thermal_sensor *sensor = &data->sensor;
+ int ret;
+
+ /* enable clock for tsensor */
+ ret = clk_prepare_enable(data->clk);
+ if (ret)
+ return ret;
+
+ /* disable module firstly */
+ hi6220_thermal_reset_enable(data->regs, 0);
+ hi6220_thermal_enable(data->regs, 0);
+
+ /* select sensor id */
+ hi6220_thermal_sensor_select(data->regs, sensor->id);
+
+ /* setting the hdak time */
+ hi6220_thermal_hdak_set(data->regs, 0);
+
+ /* setting lag value between current temp and the threshold */
+ hi6220_thermal_set_lag(data->regs, HI6220_TEMP_LAG);
+
+ /* enable for interrupt */
+ hi6220_thermal_alarm_set(data->regs, sensor->thres_temp);
+
+ hi6220_thermal_reset_set(data->regs, HI6220_TEMP_RESET);
+
+ /* enable module */
+ hi6220_thermal_reset_enable(data->regs, 1);
+ hi6220_thermal_enable(data->regs, 1);
+
+ hi6220_thermal_alarm_clear(data->regs, 0);
+ hi6220_thermal_alarm_enable(data->regs, 1);
+
+ return 0;
+}
+
+static int hi3660_thermal_enable_sensor(struct hisi_thermal_data *data)
+{
+ unsigned int value;
+ struct hisi_thermal_sensor *sensor = &data->sensor;
+
+ /* disable interrupt */
+ hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
+
+ /* setting lag value between current temp and the threshold */
+ hi3660_thermal_set_lag(data->regs, sensor->id, HI3660_TEMP_LAG);
+
+ /* set interrupt threshold */
+ value = hi3660_thermal_temp_to_step(sensor->thres_temp);
+ hi3660_thermal_alarm_set(data->regs, sensor->id, value);
+
+ /* enable interrupt */
+ hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
+ hi3660_thermal_alarm_enable(data->regs, sensor->id, 1);
+
+ return 0;
+}
+
+static int hi6220_thermal_probe(struct hisi_thermal_data *data)
+{
+ struct platform_device *pdev = data->pdev;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int ret;
+
+ data->get_temp = hi6220_thermal_get_temp;
+ data->enable_sensor = hi6220_thermal_enable_sensor;
+ data->disable_sensor = hi6220_thermal_disable_sensor;
+ data->irq_handler = hi6220_thermal_irq_handler;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(data->regs)) {
+ dev_err(dev, "failed to get io address\n");
+ return PTR_ERR(data->regs);
+ }
+
+ data->clk = devm_clk_get(dev, "thermal_clk");
+ if (IS_ERR(data->clk)) {
+ ret = PTR_ERR(data->clk);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "failed to get thermal clk: %d\n", ret);
+ return ret;
+ }
+
+ data->irq = platform_get_irq(pdev, 0);
+ if (data->irq < 0)
+ return data->irq;
+
+ data->sensor.id = HI6220_DEFAULT_SENSOR;
+
+ return 0;
+}
+
+static int hi3660_thermal_probe(struct hisi_thermal_data *data)
+{
+ struct platform_device *pdev = data->pdev;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+
+ data->get_temp = hi3660_thermal_get_temp;
+ data->enable_sensor = hi3660_thermal_enable_sensor;
+ data->disable_sensor = hi3660_thermal_disable_sensor;
+ data->irq_handler = hi3660_thermal_irq_handler;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(data->regs)) {
+ dev_err(dev, "failed to get io address\n");
+ return PTR_ERR(data->regs);
+ }
+
+ data->irq = platform_get_irq(pdev, 0);
+ if (data->irq < 0)
+ return data->irq;
+
+ data->sensor.id = HI3660_DEFAULT_SENSOR;
+
+ return 0;
+}
+
+static int hisi_thermal_get_temp(void *__data, int *temp)
+{
+ struct hisi_thermal_data *data = __data;
+ struct hisi_thermal_sensor *sensor = &data->sensor;
+
+ *temp = data->get_temp(data);
+
+ dev_dbg(&data->pdev->dev, "id=%d, temp=%d, thres=%d\n",
+ sensor->id, *temp, sensor->thres_temp);
+
+ return 0;
+}
+
+static const struct thermal_zone_of_device_ops hisi_of_thermal_ops = {
+ .get_temp = hisi_thermal_get_temp,
+};
+
+static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev)
+{
+ struct hisi_thermal_data *data = dev;
+ struct hisi_thermal_sensor *sensor = &data->sensor;
+ int temp = 0;
+
+ data->irq_handler(data);
+
+ hisi_thermal_get_temp(data, &temp);
+
+ if (temp >= sensor->thres_temp) {
+ dev_crit(&data->pdev->dev, "THERMAL ALARM: %d > %d\n",
+ temp, sensor->thres_temp);
+
+ thermal_zone_device_update(data->sensor.tzd,
+ THERMAL_EVENT_UNSPECIFIED);
+
+ } else {
+ dev_crit(&data->pdev->dev, "THERMAL ALARM stopped: %d < %d\n",
+ temp, sensor->thres_temp);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int hisi_thermal_register_sensor(struct platform_device *pdev,
+ struct hisi_thermal_data *data,
+ struct hisi_thermal_sensor *sensor)
+{
+ int ret, i;
+ const struct thermal_trip *trip;
+
+ sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
+ sensor->id, data,
+ &hisi_of_thermal_ops);
+ if (IS_ERR(sensor->tzd)) {
+ ret = PTR_ERR(sensor->tzd);
+ sensor->tzd = NULL;
+ dev_err(&pdev->dev, "failed to register sensor id %d: %d\n",
+ sensor->id, ret);
+ return ret;
+ }
+
+ trip = of_thermal_get_trip_points(sensor->tzd);
+
+ for (i = 0; i < of_thermal_get_ntrips(sensor->tzd); i++) {
+ if (trip[i].type == THERMAL_TRIP_PASSIVE) {
+ sensor->thres_temp = trip[i].temperature;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static const struct of_device_id of_hisi_thermal_match[] = {
+ {
+ .compatible = "hisilicon,tsensor",
+ .data = hi6220_thermal_probe
+ },
+ {
+ .compatible = "hisilicon,hi3660-tsensor",
+ .data = hi3660_thermal_probe
+ },
+ { /* end */ }
+};
+MODULE_DEVICE_TABLE(of, of_hisi_thermal_match);
+
+static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
+ bool on)
+{
+ struct thermal_zone_device *tzd = sensor->tzd;
+
+ tzd->ops->set_mode(tzd,
+ on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
+}
+
+static int hisi_thermal_probe(struct platform_device *pdev)
+{
+ struct hisi_thermal_data *data;
+ int (*platform_probe)(struct hisi_thermal_data *);
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->pdev = pdev;
+ platform_set_drvdata(pdev, data);
+
+ platform_probe = of_device_get_match_data(dev);
+ if (!platform_probe) {
+ dev_err(dev, "failed to get probe func\n");
+ return -EINVAL;
+ }
+
+ ret = platform_probe(data);
+ if (ret)
+ return ret;
+
+ ret = hisi_thermal_register_sensor(pdev, data,
+ &data->sensor);
+ if (ret) {
+ dev_err(dev, "failed to register thermal sensor: %d\n", ret);
+ return ret;
+ }
+
+ ret = data->enable_sensor(data);
+ if (ret) {
+ dev_err(dev, "Failed to setup the sensor: %d\n", ret);
+ return ret;
+ }
+
+ if (data->irq) {
+ ret = devm_request_threaded_irq(dev, data->irq, NULL,
+ hisi_thermal_alarm_irq_thread,
+ IRQF_ONESHOT, "hisi_thermal", data);
+ if (ret < 0) {
+ dev_err(dev, "failed to request alarm irq: %d\n", ret);
+ return ret;
+ }
+ }
+
+ hisi_thermal_toggle_sensor(&data->sensor, true);
+
+ return 0;
+}
+
+static int hisi_thermal_remove(struct platform_device *pdev)
+{
+ struct hisi_thermal_data *data = platform_get_drvdata(pdev);
+ struct hisi_thermal_sensor *sensor = &data->sensor;
+
+ hisi_thermal_toggle_sensor(sensor, false);
+
+ data->disable_sensor(data);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int hisi_thermal_suspend(struct device *dev)
+{
+ struct hisi_thermal_data *data = dev_get_drvdata(dev);
+
+ data->disable_sensor(data);
+
+ return 0;
+}
+
+static int hisi_thermal_resume(struct device *dev)
+{
+ struct hisi_thermal_data *data = dev_get_drvdata(dev);
+
+ return data->enable_sensor(data);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
+ hisi_thermal_suspend, hisi_thermal_resume);
+
+static struct platform_driver hisi_thermal_driver = {
+ .driver = {
+ .name = "hisi_thermal",
+ .pm = &hisi_thermal_pm_ops,
+ .of_match_table = of_hisi_thermal_match,
+ },
+ .probe = hisi_thermal_probe,
+ .remove = hisi_thermal_remove,
+};
+
+module_platform_driver(hisi_thermal_driver);
+
+MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
+MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
+MODULE_DESCRIPTION("Hisilicon thermal driver");
+MODULE_LICENSE("GPL v2");