hwmon: (lm70) add device tree support
Allow the lm70 to be probed from a device tree.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c
index 97204dc..9296e9d 100644
--- a/drivers/hwmon/lm70.c
+++ b/drivers/hwmon/lm70.c
@@ -37,6 +37,7 @@
#include <linux/mod_devicetable.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
+#include <linux/of_device.h>
#define DRVNAME "lm70"
@@ -130,11 +131,41 @@
/*----------------------------------------------------------------------*/
+#ifdef CONFIG_OF
+static const struct of_device_id lm70_of_ids[] = {
+ {
+ .compatible = "ti,lm70",
+ .data = (void *) LM70_CHIP_LM70,
+ },
+ {
+ .compatible = "ti,tmp121",
+ .data = (void *) LM70_CHIP_TMP121,
+ },
+ {
+ .compatible = "ti,lm71",
+ .data = (void *) LM70_CHIP_LM71,
+ },
+ {
+ .compatible = "ti,lm74",
+ .data = (void *) LM70_CHIP_LM74,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, lm70_of_ids);
+#endif
+
static int lm70_probe(struct spi_device *spi)
{
- int chip = spi_get_device_id(spi)->driver_data;
+ const struct of_device_id *match;
struct device *hwmon_dev;
struct lm70 *p_lm70;
+ int chip;
+
+ match = of_match_device(lm70_of_ids, &spi->dev);
+ if (match)
+ chip = (int)(uintptr_t)match->data;
+ else
+ chip = spi_get_device_id(spi)->driver_data;
/* signaling is SPI_MODE_0 */
if (spi->mode & (SPI_CPOL | SPI_CPHA))
@@ -169,6 +200,7 @@
.driver = {
.name = "lm70",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(lm70_of_ids),
},
.id_table = lm70_ids,
.probe = lm70_probe,