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path: root/drivers/thermal/tegra/soctherm.c
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Diffstat (limited to 'drivers/thermal/tegra/soctherm.c')
-rw-r--r--drivers/thermal/tegra/soctherm.c685
1 files changed, 685 insertions, 0 deletions
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
new file mode 100644
index 000000000000..b8651726201e
--- /dev/null
+++ b/drivers/thermal/tegra/soctherm.c
@@ -0,0 +1,685 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author:
+ * Mikko Perttunen <mperttunen@nvidia.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/debugfs.h>
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/thermal.h>
+
+#include <dt-bindings/thermal/tegra124-soctherm.h>
+
+#include "soctherm.h"
+
+#define SENSOR_CONFIG0 0
+#define SENSOR_CONFIG0_STOP BIT(0)
+#define SENSOR_CONFIG0_CPTR_OVER BIT(2)
+#define SENSOR_CONFIG0_OVER BIT(3)
+#define SENSOR_CONFIG0_TCALC_OVER BIT(4)
+#define SENSOR_CONFIG0_TALL_MASK (0xfffff << 8)
+#define SENSOR_CONFIG0_TALL_SHIFT 8
+
+#define SENSOR_CONFIG1 4
+#define SENSOR_CONFIG1_TSAMPLE_MASK 0x3ff
+#define SENSOR_CONFIG1_TSAMPLE_SHIFT 0
+#define SENSOR_CONFIG1_TIDDQ_EN_MASK (0x3f << 15)
+#define SENSOR_CONFIG1_TIDDQ_EN_SHIFT 15
+#define SENSOR_CONFIG1_TEN_COUNT_MASK (0x3f << 24)
+#define SENSOR_CONFIG1_TEN_COUNT_SHIFT 24
+#define SENSOR_CONFIG1_TEMP_ENABLE BIT(31)
+
+/*
+ * SENSOR_CONFIG2 is defined in soctherm.h
+ * because, it will be used by tegra_soctherm_fuse.c
+ */
+
+#define SENSOR_STATUS0 0xc
+#define SENSOR_STATUS0_VALID_MASK BIT(31)
+#define SENSOR_STATUS0_CAPTURE_MASK 0xffff
+
+#define SENSOR_STATUS1 0x10
+#define SENSOR_STATUS1_TEMP_VALID_MASK BIT(31)
+#define SENSOR_STATUS1_TEMP_MASK 0xffff
+
+#define READBACK_VALUE_MASK 0xff00
+#define READBACK_VALUE_SHIFT 8
+#define READBACK_ADD_HALF BIT(7)
+#define READBACK_NEGATE BIT(0)
+
+/* get val from register(r) mask bits(m) */
+#define REG_GET_MASK(r, m) (((r) & (m)) >> (ffs(m) - 1))
+/* set val(v) to mask bits(m) of register(r) */
+#define REG_SET_MASK(r, m, v) (((r) & ~(m)) | \
+ (((v) & (m >> (ffs(m) - 1))) << (ffs(m) - 1)))
+
+static const int min_low_temp = -127000;
+static const int max_high_temp = 127000;
+
+struct tegra_thermctl_zone {
+ void __iomem *reg;
+ struct device *dev;
+ struct thermal_zone_device *tz;
+ const struct tegra_tsensor_group *sg;
+};
+
+struct tegra_soctherm {
+ struct reset_control *reset;
+ struct clk *clock_tsensor;
+ struct clk *clock_soctherm;
+ void __iomem *regs;
+ struct thermal_zone_device **thermctl_tzs;
+
+ u32 *calib;
+ struct tegra_soctherm_soc *soc;
+
+ struct dentry *debugfs_dir;
+};
+
+static void enable_tsensor(struct tegra_soctherm *tegra, unsigned int i)
+{
+ const struct tegra_tsensor *sensor = &tegra->soc->tsensors[i];
+ void __iomem *base = tegra->regs + sensor->base;
+ unsigned int val;
+
+ val = sensor->config->tall << SENSOR_CONFIG0_TALL_SHIFT;
+ writel(val, base + SENSOR_CONFIG0);
+
+ val = (sensor->config->tsample - 1) << SENSOR_CONFIG1_TSAMPLE_SHIFT;
+ val |= sensor->config->tiddq_en << SENSOR_CONFIG1_TIDDQ_EN_SHIFT;
+ val |= sensor->config->ten_count << SENSOR_CONFIG1_TEN_COUNT_SHIFT;
+ val |= SENSOR_CONFIG1_TEMP_ENABLE;
+ writel(val, base + SENSOR_CONFIG1);
+
+ writel(tegra->calib[i], base + SENSOR_CONFIG2);
+}
+
+/*
+ * Translate from soctherm readback format to millicelsius.
+ * The soctherm readback format in bits is as follows:
+ * TTTTTTTT H______N
+ * where T's contain the temperature in Celsius,
+ * H denotes an addition of 0.5 Celsius and N denotes negation
+ * of the final value.
+ */
+static int translate_temp(u16 val)
+{
+ int t;
+
+ t = ((val & READBACK_VALUE_MASK) >> READBACK_VALUE_SHIFT) * 1000;
+ if (val & READBACK_ADD_HALF)
+ t += 500;
+ if (val & READBACK_NEGATE)
+ t *= -1;
+
+ return t;
+}
+
+static int tegra_thermctl_get_temp(void *data, int *out_temp)
+{
+ struct tegra_thermctl_zone *zone = data;
+ u32 val;
+
+ val = readl(zone->reg);
+ val = REG_GET_MASK(val, zone->sg->sensor_temp_mask);
+ *out_temp = translate_temp(val);
+
+ return 0;
+}
+
+static int
+thermtrip_program(struct device *dev, const struct tegra_tsensor_group *sg,
+ int trip_temp);
+
+static int tegra_thermctl_set_trip_temp(void *data, int trip, int temp)
+{
+ struct tegra_thermctl_zone *zone = data;
+ struct thermal_zone_device *tz = zone->tz;
+ const struct tegra_tsensor_group *sg = zone->sg;
+ struct device *dev = zone->dev;
+ enum thermal_trip_type type;
+ int ret;
+
+ if (!tz)
+ return -EINVAL;
+
+ ret = tz->ops->get_trip_type(tz, trip, &type);
+ if (ret)
+ return ret;
+
+ if (type != THERMAL_TRIP_CRITICAL)
+ return 0;
+
+ return thermtrip_program(dev, sg, temp);
+}
+
+static const struct thermal_zone_of_device_ops tegra_of_thermal_ops = {
+ .get_temp = tegra_thermctl_get_temp,
+ .set_trip_temp = tegra_thermctl_set_trip_temp,
+};
+
+/**
+ * enforce_temp_range() - check and enforce temperature range [min, max]
+ * @trip_temp: the trip temperature to check
+ *
+ * Checks and enforces the permitted temperature range that SOC_THERM
+ * HW can support This is
+ * done while taking care of precision.
+ *
+ * Return: The precision adjusted capped temperature in millicelsius.
+ */
+static int enforce_temp_range(struct device *dev, int trip_temp)
+{
+ int temp;
+
+ temp = clamp_val(trip_temp, min_low_temp, max_high_temp);
+ if (temp != trip_temp)
+ dev_info(dev, "soctherm: trip temperature %d forced to %d\n",
+ trip_temp, temp);
+ return temp;
+}
+
+/**
+ * thermtrip_program() - Configures the hardware to shut down the
+ * system if a given sensor group reaches a given temperature
+ * @dev: ptr to the struct device for the SOC_THERM IP block
+ * @sg: pointer to the sensor group to set the thermtrip temperature for
+ * @trip_temp: the temperature in millicelsius to trigger the thermal trip at
+ *
+ * Sets the thermal trip threshold of the given sensor group to be the
+ * @trip_temp. If this threshold is crossed, the hardware will shut
+ * down.
+ *
+ * Note that, although @trip_temp is specified in millicelsius, the
+ * hardware is programmed in degrees Celsius.
+ *
+ * Return: 0 upon success, or %-EINVAL upon failure.
+ */
+static int thermtrip_program(struct device *dev,
+ const struct tegra_tsensor_group *sg,
+ int trip_temp)
+{
+ struct tegra_soctherm *ts = dev_get_drvdata(dev);
+ int temp;
+ u32 r;
+
+ if (!sg || !sg->thermtrip_threshold_mask)
+ return -EINVAL;
+
+ temp = enforce_temp_range(dev, trip_temp) / ts->soc->thresh_grain;
+
+ r = readl(ts->regs + THERMCTL_THERMTRIP_CTL);
+ r = REG_SET_MASK(r, sg->thermtrip_threshold_mask, temp);
+ r = REG_SET_MASK(r, sg->thermtrip_enable_mask, 1);
+ r = REG_SET_MASK(r, sg->thermtrip_any_en_mask, 0);
+ writel(r, ts->regs + THERMCTL_THERMTRIP_CTL);
+
+ return 0;
+}
+
+/**
+ * tegra_soctherm_set_hwtrips() - set HW trip point from DT data
+ * @dev: struct device * of the SOC_THERM instance
+ *
+ * Configure the SOC_THERM HW trip points, setting "THERMTRIP"
+ * trip points , using "critical" type trip_temp from thermal
+ * zone.
+ * After they have been configured, THERMTRIP will take action
+ * when the configured SoC thermal sensor group reaches a
+ * certain temperature.
+ *
+ * Return: 0 upon success, or a negative error code on failure.
+ * "Success" does not mean that trips was enabled; it could also
+ * mean that no node was found in DT.
+ * THERMTRIP has been enabled successfully when a message similar to
+ * this one appears on the serial console:
+ * "thermtrip: will shut down when sensor group XXX reaches YYYYYY mC"
+ */
+static int tegra_soctherm_set_hwtrips(struct device *dev,
+ const struct tegra_tsensor_group *sg,
+ struct thermal_zone_device *tz)
+{
+ int temperature;
+ int ret;
+
+ ret = tz->ops->get_crit_temp(tz, &temperature);
+ if (ret) {
+ dev_warn(dev, "thermtrip: %s: missing critical temperature\n",
+ sg->name);
+ return ret;
+ }
+
+ ret = thermtrip_program(dev, sg, temperature);
+ if (ret) {
+ dev_err(dev, "thermtrip: %s: error during enable\n",
+ sg->name);
+ return ret;
+ }
+
+ dev_info(dev,
+ "thermtrip: will shut down when %s reaches %d mC\n",
+ sg->name, temperature);
+
+ return 0;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int regs_show(struct seq_file *s, void *data)
+{
+ struct platform_device *pdev = s->private;
+ struct tegra_soctherm *ts = platform_get_drvdata(pdev);
+ const struct tegra_tsensor *tsensors = ts->soc->tsensors;
+ const struct tegra_tsensor_group **ttgs = ts->soc->ttgs;
+ u32 r, state;
+ int i;
+
+ seq_puts(s, "-----TSENSE (convert HW)-----\n");
+
+ for (i = 0; i < ts->soc->num_tsensors; i++) {
+ r = readl(ts->regs + tsensors[i].base + SENSOR_CONFIG1);
+ state = REG_GET_MASK(r, SENSOR_CONFIG1_TEMP_ENABLE);
+
+ seq_printf(s, "%s: ", tsensors[i].name);
+ seq_printf(s, "En(%d) ", state);
+
+ if (!state) {
+ seq_puts(s, "\n");
+ continue;
+ }
+
+ state = REG_GET_MASK(r, SENSOR_CONFIG1_TIDDQ_EN_MASK);
+ seq_printf(s, "tiddq(%d) ", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG1_TEN_COUNT_MASK);
+ seq_printf(s, "ten_count(%d) ", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG1_TSAMPLE_MASK);
+ seq_printf(s, "tsample(%d) ", state + 1);
+
+ r = readl(ts->regs + tsensors[i].base + SENSOR_STATUS1);
+ state = REG_GET_MASK(r, SENSOR_STATUS1_TEMP_VALID_MASK);
+ seq_printf(s, "Temp(%d/", state);
+ state = REG_GET_MASK(r, SENSOR_STATUS1_TEMP_MASK);
+ seq_printf(s, "%d) ", translate_temp(state));
+
+ r = readl(ts->regs + tsensors[i].base + SENSOR_STATUS0);
+ state = REG_GET_MASK(r, SENSOR_STATUS0_VALID_MASK);
+ seq_printf(s, "Capture(%d/", state);
+ state = REG_GET_MASK(r, SENSOR_STATUS0_CAPTURE_MASK);
+ seq_printf(s, "%d) ", state);
+
+ r = readl(ts->regs + tsensors[i].base + SENSOR_CONFIG0);
+ state = REG_GET_MASK(r, SENSOR_CONFIG0_STOP);
+ seq_printf(s, "Stop(%d) ", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG0_TALL_MASK);
+ seq_printf(s, "Tall(%d) ", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG0_TCALC_OVER);
+ seq_printf(s, "Over(%d/", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG0_OVER);
+ seq_printf(s, "%d/", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG0_CPTR_OVER);
+ seq_printf(s, "%d) ", state);
+
+ r = readl(ts->regs + tsensors[i].base + SENSOR_CONFIG2);
+ state = REG_GET_MASK(r, SENSOR_CONFIG2_THERMA_MASK);
+ seq_printf(s, "Therm_A/B(%d/", state);
+ state = REG_GET_MASK(r, SENSOR_CONFIG2_THERMB_MASK);
+ seq_printf(s, "%d)\n", (s16)state);
+ }
+
+ r = readl(ts->regs + SENSOR_PDIV);
+ seq_printf(s, "PDIV: 0x%x\n", r);
+
+ r = readl(ts->regs + SENSOR_HOTSPOT_OFF);
+ seq_printf(s, "HOTSPOT: 0x%x\n", r);
+
+ seq_puts(s, "\n");
+ seq_puts(s, "-----SOC_THERM-----\n");
+
+ r = readl(ts->regs + SENSOR_TEMP1);
+ state = REG_GET_MASK(r, SENSOR_TEMP1_CPU_TEMP_MASK);
+ seq_printf(s, "Temperatures: CPU(%d) ", translate_temp(state));
+ state = REG_GET_MASK(r, SENSOR_TEMP1_GPU_TEMP_MASK);
+ seq_printf(s, " GPU(%d) ", translate_temp(state));
+ r = readl(ts->regs + SENSOR_TEMP2);
+ state = REG_GET_MASK(r, SENSOR_TEMP2_PLLX_TEMP_MASK);
+ seq_printf(s, " PLLX(%d) ", translate_temp(state));
+ state = REG_GET_MASK(r, SENSOR_TEMP2_MEM_TEMP_MASK);
+ seq_printf(s, " MEM(%d)\n", translate_temp(state));
+
+ r = readl(ts->regs + THERMCTL_THERMTRIP_CTL);
+ state = REG_GET_MASK(r, ttgs[0]->thermtrip_any_en_mask);
+ seq_printf(s, "Thermtrip Any En(%d)\n", state);
+ for (i = 0; i < ts->soc->num_ttgs; i++) {
+ state = REG_GET_MASK(r, ttgs[i]->thermtrip_enable_mask);
+ seq_printf(s, " %s En(%d) ", ttgs[i]->name, state);
+ state = REG_GET_MASK(r, ttgs[i]->thermtrip_threshold_mask);
+ state *= ts->soc->thresh_grain;
+ seq_printf(s, "Thresh(%d)\n", state);
+ }
+
+ return 0;
+}
+
+static int regs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, regs_show, inode->i_private);
+}
+
+static const struct file_operations regs_fops = {
+ .open = regs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void soctherm_debug_init(struct platform_device *pdev)
+{
+ struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
+ struct dentry *root, *file;
+
+ root = debugfs_create_dir("soctherm", NULL);
+ if (!root) {
+ dev_err(&pdev->dev, "failed to create debugfs directory\n");
+ return;
+ }
+
+ tegra->debugfs_dir = root;
+
+ file = debugfs_create_file("reg_contents", 0644, root,
+ pdev, &regs_fops);
+ if (!file) {
+ dev_err(&pdev->dev, "failed to create debugfs file\n");
+ debugfs_remove_recursive(tegra->debugfs_dir);
+ tegra->debugfs_dir = NULL;
+ }
+}
+#else
+static inline void soctherm_debug_init(struct platform_device *pdev) {}
+#endif
+
+static int soctherm_clk_enable(struct platform_device *pdev, bool enable)
+{
+ struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
+ int err;
+
+ if (!tegra->clock_soctherm || !tegra->clock_tsensor)
+ return -EINVAL;
+
+ reset_control_assert(tegra->reset);
+
+ if (enable) {
+ err = clk_prepare_enable(tegra->clock_soctherm);
+ if (err) {
+ reset_control_deassert(tegra->reset);
+ return err;
+ }
+
+ err = clk_prepare_enable(tegra->clock_tsensor);
+ if (err) {
+ clk_disable_unprepare(tegra->clock_soctherm);
+ reset_control_deassert(tegra->reset);
+ return err;
+ }
+ } else {
+ clk_disable_unprepare(tegra->clock_tsensor);
+ clk_disable_unprepare(tegra->clock_soctherm);
+ }
+
+ reset_control_deassert(tegra->reset);
+
+ return 0;
+}
+
+static void soctherm_init(struct platform_device *pdev)
+{
+ struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
+ const struct tegra_tsensor_group **ttgs = tegra->soc->ttgs;
+ int i;
+ u32 pdiv, hotspot;
+
+ /* Initialize raw sensors */
+ for (i = 0; i < tegra->soc->num_tsensors; ++i)
+ enable_tsensor(tegra, i);
+
+ /* program pdiv and hotspot offsets per THERM */
+ pdiv = readl(tegra->regs + SENSOR_PDIV);
+ hotspot = readl(tegra->regs + SENSOR_HOTSPOT_OFF);
+ for (i = 0; i < tegra->soc->num_ttgs; ++i) {
+ pdiv = REG_SET_MASK(pdiv, ttgs[i]->pdiv_mask,
+ ttgs[i]->pdiv);
+ /* hotspot offset from PLLX, doesn't need to configure PLLX */
+ if (ttgs[i]->id == TEGRA124_SOCTHERM_SENSOR_PLLX)
+ continue;
+ hotspot = REG_SET_MASK(hotspot,
+ ttgs[i]->pllx_hotspot_mask,
+ ttgs[i]->pllx_hotspot_diff);
+ }
+ writel(pdiv, tegra->regs + SENSOR_PDIV);
+ writel(hotspot, tegra->regs + SENSOR_HOTSPOT_OFF);
+}
+
+static const struct of_device_id tegra_soctherm_of_match[] = {
+#ifdef CONFIG_ARCH_TEGRA_124_SOC
+ {
+ .compatible = "nvidia,tegra124-soctherm",
+ .data = &tegra124_soctherm,
+ },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_132_SOC
+ {
+ .compatible = "nvidia,tegra132-soctherm",
+ .data = &tegra132_soctherm,
+ },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_210_SOC
+ {
+ .compatible = "nvidia,tegra210-soctherm",
+ .data = &tegra210_soctherm,
+ },
+#endif
+ { },
+};
+MODULE_DEVICE_TABLE(of, tegra_soctherm_of_match);
+
+static int tegra_soctherm_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
+ struct tegra_soctherm *tegra;
+ struct thermal_zone_device *z;
+ struct tsensor_shared_calib shared_calib;
+ struct resource *res;
+ struct tegra_soctherm_soc *soc;
+ unsigned int i;
+ int err;
+
+ match = of_match_node(tegra_soctherm_of_match, pdev->dev.of_node);
+ if (!match)
+ return -ENODEV;
+
+ soc = (struct tegra_soctherm_soc *)match->data;
+ if (soc->num_ttgs > TEGRA124_SOCTHERM_SENSOR_NUM)
+ return -EINVAL;
+
+ tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
+ if (!tegra)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, tegra);
+
+ tegra->soc = soc;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ tegra->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(tegra->regs))
+ return PTR_ERR(tegra->regs);
+
+ tegra->reset = devm_reset_control_get(&pdev->dev, "soctherm");
+ if (IS_ERR(tegra->reset)) {
+ dev_err(&pdev->dev, "can't get soctherm reset\n");
+ return PTR_ERR(tegra->reset);
+ }
+
+ tegra->clock_tsensor = devm_clk_get(&pdev->dev, "tsensor");
+ if (IS_ERR(tegra->clock_tsensor)) {
+ dev_err(&pdev->dev, "can't get tsensor clock\n");
+ return PTR_ERR(tegra->clock_tsensor);
+ }
+
+ tegra->clock_soctherm = devm_clk_get(&pdev->dev, "soctherm");
+ if (IS_ERR(tegra->clock_soctherm)) {
+ dev_err(&pdev->dev, "can't get soctherm clock\n");
+ return PTR_ERR(tegra->clock_soctherm);
+ }
+
+ tegra->calib = devm_kzalloc(&pdev->dev,
+ sizeof(u32) * soc->num_tsensors,
+ GFP_KERNEL);
+ if (!tegra->calib)
+ return -ENOMEM;
+
+ /* calculate shared calibration data */
+ err = tegra_calc_shared_calib(soc->tfuse, &shared_calib);
+ if (err)
+ return err;
+
+ /* calculate tsensor calibaration data */
+ for (i = 0; i < soc->num_tsensors; ++i) {
+ err = tegra_calc_tsensor_calib(&soc->tsensors[i],
+ &shared_calib,
+ &tegra->calib[i]);
+ if (err)
+ return err;
+ }
+
+ tegra->thermctl_tzs = devm_kzalloc(&pdev->dev,
+ sizeof(*z) * soc->num_ttgs,
+ GFP_KERNEL);
+ if (!tegra->thermctl_tzs)
+ return -ENOMEM;
+
+ err = soctherm_clk_enable(pdev, true);
+ if (err)
+ return err;
+
+ soctherm_init(pdev);
+
+ for (i = 0; i < soc->num_ttgs; ++i) {
+ struct tegra_thermctl_zone *zone =
+ devm_kzalloc(&pdev->dev, sizeof(*zone), GFP_KERNEL);
+ if (!zone) {
+ err = -ENOMEM;
+ goto disable_clocks;
+ }
+
+ zone->reg = tegra->regs + soc->ttgs[i]->sensor_temp_offset;
+ zone->dev = &pdev->dev;
+ zone->sg = soc->ttgs[i];
+
+ z = devm_thermal_zone_of_sensor_register(&pdev->dev,
+ soc->ttgs[i]->id, zone,
+ &tegra_of_thermal_ops);
+ if (IS_ERR(z)) {
+ err = PTR_ERR(z);
+ dev_err(&pdev->dev, "failed to register sensor: %d\n",
+ err);
+ goto disable_clocks;
+ }
+
+ zone->tz = z;
+ tegra->thermctl_tzs[soc->ttgs[i]->id] = z;
+
+ /* Configure hw trip points */
+ tegra_soctherm_set_hwtrips(&pdev->dev, soc->ttgs[i], z);
+ }
+
+ soctherm_debug_init(pdev);
+
+ return 0;
+
+disable_clocks:
+ soctherm_clk_enable(pdev, false);
+
+ return err;
+}
+
+static int tegra_soctherm_remove(struct platform_device *pdev)
+{
+ struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
+
+ debugfs_remove_recursive(tegra->debugfs_dir);
+
+ soctherm_clk_enable(pdev, false);
+
+ return 0;
+}
+
+static int __maybe_unused soctherm_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ soctherm_clk_enable(pdev, false);
+
+ return 0;
+}
+
+static int __maybe_unused soctherm_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
+ struct tegra_soctherm_soc *soc = tegra->soc;
+ int err, i;
+
+ err = soctherm_clk_enable(pdev, true);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Resume failed: enable clocks failed\n");
+ return err;
+ }
+
+ soctherm_init(pdev);
+
+ for (i = 0; i < soc->num_ttgs; ++i) {
+ struct thermal_zone_device *tz;
+
+ tz = tegra->thermctl_tzs[soc->ttgs[i]->id];
+ tegra_soctherm_set_hwtrips(dev, soc->ttgs[i], tz);
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(tegra_soctherm_pm, soctherm_suspend, soctherm_resume);
+
+static struct platform_driver tegra_soctherm_driver = {
+ .probe = tegra_soctherm_probe,
+ .remove = tegra_soctherm_remove,
+ .driver = {
+ .name = "tegra_soctherm",
+ .pm = &tegra_soctherm_pm,
+ .of_match_table = tegra_soctherm_of_match,
+ },
+};
+module_platform_driver(tegra_soctherm_driver);
+
+MODULE_AUTHOR("Mikko Perttunen <mperttunen@nvidia.com>");
+MODULE_DESCRIPTION("NVIDIA Tegra SOCTHERM thermal management driver");
+MODULE_LICENSE("GPL v2");