@@ -26,15 +26,32 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include "exynos_thermal_common.h"
#include "exynos_tmu.h"
#include "exynos_tmu_data.h"
+/**
+ * struct exynos_tmu_data : A structure to hold the private data of the TMU
+ driver
+ * @id: identifier of the one instance of the TMU controller.
+ * @pdata: pointer to the tmu platform/configuration data
+ * @base: base address of the single instance of the TMU controller.
+ * @irq: irq number of the TMU controller.
+ * @soc: id of the SOC type.
+ * @irq_work: pointer to the irq work structure.
+ * @lock: lock to implement synchronization.
+ * @clk: pointer to the clock structure.
+ * @temp_error1: fused value of the first point trim.
+ * @temp_error2: fused value of the second point trim.
+ * @reg_conf: pointer to structure to register with core thermal.
+ */
struct exynos_tmu_data {
+ int id;
struct exynos_tmu_platform_data *pdata;
- struct resource *mem;
void __iomem *base;
int irq;
enum soc_type soc;
@@ -42,6 +59,7 @@ struct exynos_tmu_data {
struct mutex lock;
struct clk *clk;
u8 temp_error1, temp_error2;
+ struct thermal_sensor_conf *reg_conf;
};
/*
@@ -315,12 +333,6 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
{ return -EINVAL; }
#endif/*CONFIG_THERMAL_EMULATION*/
-static struct thermal_sensor_conf exynos_sensor_conf = {
- .name = "exynos-therm",
- .read_temperature = (int (*)(void *))exynos_tmu_read,
- .write_emul_temp = exynos_tmu_set_emulation,
-};
-
static void exynos_tmu_work(struct work_struct *work)
{
struct exynos_tmu_data *data = container_of(work,
@@ -329,7 +341,7 @@ static void exynos_tmu_work(struct work_struct *work)
const struct exynos_tmu_registers *reg = pdata->registers;
unsigned int val_irq;
- exynos_report_trigger(&exynos_sensor_conf);
+ exynos_report_trigger(data->reg_conf);
mutex_lock(&data->lock);
clk_enable(data->clk);
@@ -402,10 +414,43 @@ static inline struct exynos_tmu_platform_data *exynos_get_driver_data(
platform_get_device_id(pdev)->driver_data;
}
+static int exynos_map_dt_data(struct platform_device *pdev)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct resource res;
+
+ if (!data)
+ return -ENODEV;
+
+ data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
+ if (data->id < 0)
+ data->id = 0;
+
+ data->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+ if (data->irq <= 0) {
+ dev_err(&pdev->dev, "failed to get IRQ\n");
+ return -ENODEV;
+ }
+
+ if (of_address_to_resource(pdev->dev.of_node, 0, &res)) {
+ dev_err(&pdev->dev, "failed to get Resource\n");
+ return -ENODEV;
+ }
+
+ data->base = devm_ioremap(&pdev->dev, res.start, resource_size(&res));
+ if (!data->base) {
+ dev_err(&pdev->dev, "Failed to ioremap memory\n");
+ return -EADDRNOTAVAIL;
+ }
+
+ return 0;
+}
+
static int exynos_tmu_probe(struct platform_device *pdev)
{
struct exynos_tmu_data *data;
struct exynos_tmu_platform_data *pdata = pdev->dev.platform_data;
+ struct thermal_sensor_conf *sensor_conf;
int ret, i;
if (!pdata)
@@ -422,26 +467,17 @@ static int exynos_tmu_probe(struct platform_device *pdev)
return -ENOMEM;
}
- data->irq = platform_get_irq(pdev, 0);
- if (data->irq < 0) {
- dev_err(&pdev->dev, "Failed to get platform irq\n");
- return data->irq;
- }
-
- INIT_WORK(&data->irq_work, exynos_tmu_work);
-
- data->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!data->mem) {
- dev_err(&pdev->dev, "Failed to get platform resource\n");
- return -ENOENT;
- }
+ data->pdata = pdata;
+ platform_set_drvdata(pdev, data);
+ mutex_init(&data->lock);
- data->base = devm_ioremap_resource(&pdev->dev, data->mem);
- if (IS_ERR(data->base))
- return PTR_ERR(data->base);
+ ret = exynos_map_dt_data(pdev);
+ if (ret)
+ return ret;
+ INIT_WORK(&data->irq_work, exynos_tmu_work);
ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
- IRQF_TRIGGER_RISING, "exynos-tmu", data);
+ IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data);
if (ret) {
dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
return ret;
@@ -466,10 +502,6 @@ static int exynos_tmu_probe(struct platform_device *pdev)
goto err_clk;
}
- data->pdata = pdata;
- platform_set_drvdata(pdev, data);
- mutex_init(&data->lock);
-
ret = exynos_tmu_initialize(pdev);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize TMU\n");
@@ -478,28 +510,40 @@ static int exynos_tmu_probe(struct platform_device *pdev)
exynos_tmu_control(pdev, true);
- /* Register the sensor with thermal management interface */
- (&exynos_sensor_conf)->driver_data = data;
- exynos_sensor_conf.trip_data.trip_count = pdata->trigger_enable[0] +
+ /* Allocate a structure to register with the exynos core thermal */
+ sensor_conf = devm_kzalloc(&pdev->dev,
+ sizeof(struct thermal_sensor_conf), GFP_KERNEL);
+ if (!sensor_conf) {
+ dev_err(&pdev->dev, "Failed to allocate registration struct\n");
+ ret = -ENOMEM;
+ goto err_clk;
+ }
+ data->reg_conf = sensor_conf;
+ sprintf(sensor_conf->name, "therm_zone%d", data->id);
+ sensor_conf->read_temperature = (int (*)(void *))exynos_tmu_read;
+ sensor_conf->write_emul_temp =
+ (int (*)(void *, unsigned long))exynos_tmu_set_emulation;
+ sensor_conf->driver_data = data;
+ sensor_conf->trip_data.trip_count = pdata->trigger_enable[0] +
pdata->trigger_enable[1] + pdata->trigger_enable[2]+
pdata->trigger_enable[3];
- for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++)
- exynos_sensor_conf.trip_data.trip_val[i] =
+ for (i = 0; i < sensor_conf->trip_data.trip_count; i++)
+ sensor_conf->trip_data.trip_val[i] =
pdata->threshold + pdata->trigger_levels[i];
- exynos_sensor_conf.trip_data.trigger_falling = pdata->threshold_falling;
+ sensor_conf->trip_data.trigger_falling = pdata->threshold_falling;
- exynos_sensor_conf.cooling_data.freq_clip_count =
- pdata->freq_tab_count;
+ sensor_conf->cooling_data.freq_clip_count = pdata->freq_tab_count;
for (i = 0; i < pdata->freq_tab_count; i++) {
- exynos_sensor_conf.cooling_data.freq_data[i].freq_clip_max =
+ sensor_conf->cooling_data.freq_data[i].freq_clip_max =
pdata->freq_tab[i].freq_clip_max;
- exynos_sensor_conf.cooling_data.freq_data[i].temp_level =
+ sensor_conf->cooling_data.freq_data[i].temp_level =
pdata->freq_tab[i].temp_level;
}
- ret = exynos_register_thermal(&exynos_sensor_conf);
+ /* Register the sensor with thermal management interface */
+ ret = exynos_register_thermal(sensor_conf);
if (ret) {
dev_err(&pdev->dev, "Failed to register thermal interface\n");
goto err_clk;
@@ -518,7 +562,7 @@ static int exynos_tmu_remove(struct platform_device *pdev)
exynos_tmu_control(pdev, false);
- exynos_unregister_thermal(&exynos_sensor_conf);
+ exynos_unregister_thermal(data->reg_conf);
clk_unprepare(data->clk);