drivers/thermal/spear_thermal.c: add Device Tree probing capability
SPEAr platforms now support DT and so must convert all drivers to support
DT. This patch adds DT probing support for SPEAr thermal sensor driver
and updates its documentation too.
Also, as SPEAr is the only user of this driver and is only available with
DT, make this an only DT driver. So, platform_data is completely removed
and passed via DT now.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@st.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c
index c2e32df..ca40d36 100644
--- a/drivers/thermal/spear_thermal.c
+++ b/drivers/thermal/spear_thermal.c
@@ -20,9 +20,9 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/of.h>
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/spear_thermal.h>
#include <linux/thermal.h>
#define MD_FACTOR 1000
@@ -103,21 +103,20 @@
{
struct thermal_zone_device *spear_thermal = NULL;
struct spear_thermal_dev *stdev;
- struct spear_thermal_pdata *pdata;
- int ret = 0;
+ struct device_node *np = pdev->dev.of_node;
struct resource *stres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ int ret = 0, val;
+
+ if (!np || !of_property_read_u32(np, "st,thermal-flags", &val)) {
+ dev_err(&pdev->dev, "Failed: DT Pdata not passed\n");
+ return -EINVAL;
+ }
if (!stres) {
dev_err(&pdev->dev, "memory resource missing\n");
return -ENODEV;
}
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "platform data is NULL\n");
- return -EINVAL;
- }
-
stdev = devm_kzalloc(&pdev->dev, sizeof(*stdev), GFP_KERNEL);
if (!stdev) {
dev_err(&pdev->dev, "kzalloc fail\n");
@@ -144,7 +143,7 @@
goto put_clk;
}
- stdev->flags = pdata->thermal_flags;
+ stdev->flags = val;
writel_relaxed(stdev->flags, stdev->thermal_base);
spear_thermal = thermal_zone_device_register("spear_thermal", 0,
@@ -189,6 +188,12 @@
return 0;
}
+static const struct of_device_id spear_thermal_id_table[] = {
+ { .compatible = "st,thermal-spear1340" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, spear_thermal_id_table);
+
static struct platform_driver spear_thermal_driver = {
.probe = spear_thermal_probe,
.remove = spear_thermal_exit,
@@ -196,6 +201,7 @@
.name = "spear_thermal",
.owner = THIS_MODULE,
.pm = &spear_thermal_pm_ops,
+ .of_match_table = of_match_ptr(spear_thermal_id_table),
},
};