You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
5.0 KiB
188 lines
5.0 KiB
From 2ddaec76dbe9b6e911e2a1442248ab103909cce3 Mon Sep 17 00:00:00 2001
|
|
From: Biwen Li <biwen.li@nxp.com>
|
|
Date: Wed, 17 Apr 2019 18:59:06 +0800
|
|
Subject: [PATCH] tmu: support layerscape
|
|
|
|
This is an integrated patch of tmu for layerscape
|
|
|
|
Signed-off-by: Biwen Li <biwen.li@nxp.com>
|
|
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
|
|
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
|
|
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
|
|
---
|
|
drivers/thermal/qoriq_thermal.c | 102 ++++++++++++++------------------
|
|
1 file changed, 46 insertions(+), 56 deletions(-)
|
|
|
|
--- a/drivers/thermal/qoriq_thermal.c
|
|
+++ b/drivers/thermal/qoriq_thermal.c
|
|
@@ -69,14 +69,21 @@ struct qoriq_tmu_regs {
|
|
u32 ttr3cr; /* Temperature Range 3 Control Register */
|
|
};
|
|
|
|
+struct qoriq_tmu_data;
|
|
+
|
|
/*
|
|
* Thermal zone data
|
|
*/
|
|
+struct qoriq_sensor {
|
|
+ struct thermal_zone_device *tzd;
|
|
+ struct qoriq_tmu_data *qdata;
|
|
+ int id;
|
|
+};
|
|
+
|
|
struct qoriq_tmu_data {
|
|
- struct thermal_zone_device *tz;
|
|
struct qoriq_tmu_regs __iomem *regs;
|
|
- int sensor_id;
|
|
bool little_endian;
|
|
+ struct qoriq_sensor *sensor[SITES_MAX];
|
|
};
|
|
|
|
static void tmu_write(struct qoriq_tmu_data *p, u32 val, void __iomem *addr)
|
|
@@ -97,48 +104,51 @@ static u32 tmu_read(struct qoriq_tmu_dat
|
|
|
|
static int tmu_get_temp(void *p, int *temp)
|
|
{
|
|
+ struct qoriq_sensor *qsensor = p;
|
|
+ struct qoriq_tmu_data *qdata = qsensor->qdata;
|
|
u32 val;
|
|
- struct qoriq_tmu_data *data = p;
|
|
|
|
- val = tmu_read(data, &data->regs->site[data->sensor_id].tritsr);
|
|
+ val = tmu_read(qdata, &qdata->regs->site[qsensor->id].tritsr);
|
|
*temp = (val & 0xff) * 1000;
|
|
|
|
return 0;
|
|
}
|
|
|
|
-static int qoriq_tmu_get_sensor_id(void)
|
|
+static const struct thermal_zone_of_device_ops tmu_tz_ops = {
|
|
+ .get_temp = tmu_get_temp,
|
|
+};
|
|
+
|
|
+static int qoriq_tmu_register_tmu_zone(struct platform_device *pdev)
|
|
{
|
|
- int ret, id;
|
|
- struct of_phandle_args sensor_specs;
|
|
- struct device_node *np, *sensor_np;
|
|
+ struct qoriq_tmu_data *qdata = platform_get_drvdata(pdev);
|
|
+ int id, sites = 0;
|
|
|
|
- np = of_find_node_by_name(NULL, "thermal-zones");
|
|
- if (!np)
|
|
- return -ENODEV;
|
|
+ for (id = 0; id < SITES_MAX; id++) {
|
|
+ qdata->sensor[id] = devm_kzalloc(&pdev->dev,
|
|
+ sizeof(struct qoriq_sensor), GFP_KERNEL);
|
|
+ if (!qdata->sensor[id])
|
|
+ return -ENOMEM;
|
|
+
|
|
+ qdata->sensor[id]->id = id;
|
|
+ qdata->sensor[id]->qdata = qdata;
|
|
+
|
|
+ qdata->sensor[id]->tzd = devm_thermal_zone_of_sensor_register(
|
|
+ &pdev->dev, id, qdata->sensor[id], &tmu_tz_ops);
|
|
+ if (IS_ERR(qdata->sensor[id]->tzd)) {
|
|
+ if (PTR_ERR(qdata->sensor[id]->tzd) == -ENODEV)
|
|
+ continue;
|
|
+ else
|
|
+ return PTR_ERR(qdata->sensor[id]->tzd);
|
|
|
|
- sensor_np = of_get_next_child(np, NULL);
|
|
- ret = of_parse_phandle_with_args(sensor_np, "thermal-sensors",
|
|
- "#thermal-sensor-cells",
|
|
- 0, &sensor_specs);
|
|
- if (ret) {
|
|
- of_node_put(np);
|
|
- of_node_put(sensor_np);
|
|
- return ret;
|
|
- }
|
|
-
|
|
- if (sensor_specs.args_count >= 1) {
|
|
- id = sensor_specs.args[0];
|
|
- WARN(sensor_specs.args_count > 1,
|
|
- "%s: too many cells in sensor specifier %d\n",
|
|
- sensor_specs.np->name, sensor_specs.args_count);
|
|
- } else {
|
|
- id = 0;
|
|
- }
|
|
+ }
|
|
|
|
- of_node_put(np);
|
|
- of_node_put(sensor_np);
|
|
+ sites |= 0x1 << (15 - id);
|
|
+ }
|
|
+ /* Enable monitoring */
|
|
+ if (sites != 0)
|
|
+ tmu_write(qdata, sites | TMR_ME | TMR_ALPF, &qdata->regs->tmr);
|
|
|
|
- return id;
|
|
+ return 0;
|
|
}
|
|
|
|
static int qoriq_tmu_calibration(struct platform_device *pdev)
|
|
@@ -188,16 +198,11 @@ static void qoriq_tmu_init_device(struct
|
|
tmu_write(data, TMR_DISABLE, &data->regs->tmr);
|
|
}
|
|
|
|
-static const struct thermal_zone_of_device_ops tmu_tz_ops = {
|
|
- .get_temp = tmu_get_temp,
|
|
-};
|
|
-
|
|
static int qoriq_tmu_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
struct qoriq_tmu_data *data;
|
|
struct device_node *np = pdev->dev.of_node;
|
|
- u32 site = 0;
|
|
|
|
if (!np) {
|
|
dev_err(&pdev->dev, "Device OF-Node is NULL");
|
|
@@ -213,13 +218,6 @@ static int qoriq_tmu_probe(struct platfo
|
|
|
|
data->little_endian = of_property_read_bool(np, "little-endian");
|
|
|
|
- data->sensor_id = qoriq_tmu_get_sensor_id();
|
|
- if (data->sensor_id < 0) {
|
|
- dev_err(&pdev->dev, "Failed to get sensor id\n");
|
|
- ret = -ENODEV;
|
|
- goto err_iomap;
|
|
- }
|
|
-
|
|
data->regs = of_iomap(np, 0);
|
|
if (!data->regs) {
|
|
dev_err(&pdev->dev, "Failed to get memory region\n");
|
|
@@ -233,19 +231,13 @@ static int qoriq_tmu_probe(struct platfo
|
|
if (ret < 0)
|
|
goto err_tmu;
|
|
|
|
- data->tz = thermal_zone_of_sensor_register(&pdev->dev, data->sensor_id,
|
|
- data, &tmu_tz_ops);
|
|
- if (IS_ERR(data->tz)) {
|
|
- ret = PTR_ERR(data->tz);
|
|
- dev_err(&pdev->dev,
|
|
- "Failed to register thermal zone device %d\n", ret);
|
|
- goto err_tmu;
|
|
+ ret = qoriq_tmu_register_tmu_zone(pdev);
|
|
+ if (ret < 0) {
|
|
+ dev_err(&pdev->dev, "Failed to register sensors\n");
|
|
+ ret = -ENODEV;
|
|
+ goto err_iomap;
|
|
}
|
|
|
|
- /* Enable monitoring */
|
|
- site |= 0x1 << (15 - data->sensor_id);
|
|
- tmu_write(data, site | TMR_ME | TMR_ALPF, &data->regs->tmr);
|
|
-
|
|
return 0;
|
|
|
|
err_tmu:
|
|
@@ -261,8 +253,6 @@ static int qoriq_tmu_remove(struct platf
|
|
{
|
|
struct qoriq_tmu_data *data = platform_get_drvdata(pdev);
|
|
|
|
- thermal_zone_of_sensor_unregister(&pdev->dev, data->tz);
|
|
-
|
|
/* Disable monitoring */
|
|
tmu_write(data, TMR_DISABLE, &data->regs->tmr);
|
|
|
|
|