static int rockchip_thermal_remove(struct platform_device *pdev)
{
struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
int i;
for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) {
struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
rockchip_thermal_toggle_sensor(sensor, false);
thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd);
}
thermal->chip->control(thermal->regs, false);
clk_disable_unprepare(thermal->pclk);
clk_disable_unprepare(thermal->clk);
return 0;
}
static int tmp102_remove(struct i2c_client *client)
{
struct tmp102 *tmp102 = i2c_get_clientdata(client);
thermal_zone_of_sensor_unregister(tmp102->hwmon_dev, tmp102->tz);
hwmon_device_unregister(tmp102->hwmon_dev);
/* Stop monitoring if device was stopped originally */
if (tmp102->config_orig & TMP102_CONF_SD) {
int config;
config = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);
if (config >= 0)
i2c_smbus_write_word_swapped(client, TMP102_CONF_REG,
config | TMP102_CONF_SD);
}
return 0;
}
static int hisi_thermal_remove(struct platform_device *pdev)
{
struct hisi_thermal_data *data = platform_get_drvdata(pdev);
int i;
for (i = 0; i < HISI_MAX_SENSORS; i++) {
struct hisi_thermal_sensor *sensor = &data->sensors[i];
if (!sensor->tzd)
continue;
hisi_thermal_toggle_sensor(sensor, false);
thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd);
}
hisi_thermal_disable_sensor(data);
clk_disable_unprepare(data->clk);
return 0;
}
static int rockchip_thermal_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct rockchip_thermal_data *thermal;
const struct of_device_id *match;
struct resource *res;
int irq;
int i;
int error;
match = of_match_node(of_rockchip_thermal_match, np);
if (!match)
return -ENXIO;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "no irq resource?\n");
return -EINVAL;
}
thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
GFP_KERNEL);
if (!thermal)
return -ENOMEM;
thermal->pdev = pdev;
thermal->chip = (const struct rockchip_tsadc_chip *)match->data;
if (!thermal->chip)
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
thermal->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(thermal->regs))
return PTR_ERR(thermal->regs);
thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb");
if (IS_ERR(thermal->reset)) {
error = PTR_ERR(thermal->reset);
dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error);
return error;
}
thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
if (IS_ERR(thermal->clk)) {
error = PTR_ERR(thermal->clk);
dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
return error;
}
thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(thermal->pclk)) {
error = PTR_ERR(thermal->clk);
dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
error);
return error;
}
error = clk_prepare_enable(thermal->clk);
if (error) {
dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
error);
return error;
}
error = clk_prepare_enable(thermal->pclk);
if (error) {
dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
goto err_disable_clk;
}
rockchip_thermal_reset_controller(thermal->reset);
error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
if (error) {
dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
error);
goto err_disable_pclk;
}
thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
error = rockchip_thermal_register_sensor(pdev, thermal,
&thermal->sensors[0],
SENSOR_CPU);
if (error) {
dev_err(&pdev->dev,
"failed to register CPU thermal sensor: %d\n", error);
goto err_disable_pclk;
}
error = rockchip_thermal_register_sensor(pdev, thermal,
&thermal->sensors[1],
SENSOR_GPU);
if (error) {
dev_err(&pdev->dev,
"failed to register GPU thermal sensor: %d\n", error);
goto err_unregister_cpu_sensor;
}
error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
&rockchip_thermal_alarm_irq_thread,
IRQF_ONESHOT,
"rockchip_thermal", thermal);
if (error) {
dev_err(&pdev->dev,
"failed to request tsadc irq: %d\n", error);
goto err_unregister_gpu_sensor;
}
thermal->chip->control(thermal->regs, true);
for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
platform_set_drvdata(pdev, thermal);
return 0;
err_unregister_gpu_sensor:
thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[1].tzd);
err_unregister_cpu_sensor:
thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[0].tzd);
err_disable_pclk:
clk_disable_unprepare(thermal->pclk);
err_disable_clk:
clk_disable_unprepare(thermal->clk);
return error;
}
static int bcm2835_thermal_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct thermal_zone_device *tz;
struct bcm2835_thermal_data *data;
struct resource *res;
int err = 0;
u32 val;
unsigned long rate;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
match = of_match_device(bcm2835_thermal_of_match_table,
&pdev->dev);
if (!match)
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->regs)) {
err = PTR_ERR(data->regs);
dev_err(&pdev->dev, "Could not get registers: %d\n", err);
return err;
}
data->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(data->clk)) {
err = PTR_ERR(data->clk);
if (err != -EPROBE_DEFER)
dev_err(&pdev->dev, "Could not get clk: %d\n", err);
return err;
}
err = clk_prepare_enable(data->clk);
if (err)
return err;
rate = clk_get_rate(data->clk);
if ((rate < 1920000) || (rate > 5000000))
dev_warn(&pdev->dev,
"Clock %pCn running at %pCr Hz is outside of the recommended range: 1.92 to 5MHz\n",
data->clk, data->clk);
/* register of thermal sensor and get info from DT */
tz = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
&bcm2835_thermal_ops);
if (IS_ERR(tz)) {
err = PTR_ERR(tz);
dev_err(&pdev->dev,
"Failed to register the thermal device: %d\n",
err);
goto err_clk;
}
/*
* right now the FW does set up the HW-block, so we are not
* touching the configuration registers.
* But if the HW is not enabled, then set it up
* using "sane" values used by the firmware right now.
*/
val = readl(data->regs + BCM2835_TS_TSENSCTL);
if (!(val & BCM2835_TS_TSENSCTL_RSTB)) {
int trip_temp, offset, slope;
slope = thermal_zone_get_slope(tz);
offset = thermal_zone_get_offset(tz);
/*
* For now we deal only with critical, otherwise
* would need to iterate
*/
err = tz->ops->get_trip_temp(tz, 0, &trip_temp);
if (err < 0) {
dev_err(&pdev->dev,
"Not able to read trip_temp: %d\n",
err);
goto err_tz;
}
/* set bandgap reference voltage and enable voltage regulator */
val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT <<
BCM2835_TS_TSENSCTL_CTRL_SHIFT) |
BCM2835_TS_TSENSCTL_REGULEN;
/* use the recommended reset duration */
val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT);
/* trip_adc value from info */
val |= bcm2835_thermal_temp2adc(trip_temp,
offset,
slope)
<< BCM2835_TS_TSENSCTL_THOLD_SHIFT;
/* write the value back to the register as 2 steps */
writel(val, data->regs + BCM2835_TS_TSENSCTL);
val |= BCM2835_TS_TSENSCTL_RSTB;
writel(val, data->regs + BCM2835_TS_TSENSCTL);
}
data->tz = tz;
platform_set_drvdata(pdev, tz);
bcm2835_thermal_debugfs(pdev);
return 0;
err_tz:
thermal_zone_of_sensor_unregister(&pdev->dev, tz);
err_clk:
clk_disable_unprepare(data->clk);
return err;
}
static void devm_thermal_zone_of_sensor_release(struct device *dev, void *res)
{
thermal_zone_of_sensor_unregister(dev,
*(struct thermal_zone_device **)res);
}
