hwmon: (tmp108) Add support for I3C device

Add support for I3C device in the tmp108 driver to handle the P3T1085
sensor. Register the I3C device driver to enable I3C functionality for the
sensor.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Message-ID: <20241112-p3t1085-v4-2-a1334314b1e6@nxp.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 7b9b52fa731cb5581443c4a5a3d1819e646e7bb2..ad20dc8506f99db6541d887538d6dbe8851db887 100644 (file)
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2298,6 +2298,7 @@ config SENSORS_TMP108
        tristate "Texas Instruments TMP108"
        depends on I2C
        select REGMAP_I2C
+       select REGMAP_I3C if I3C
        help
          If you say yes here you get support for Texas Instruments TMP108
          sensor chips and NXP P3T1085.

diff --git a/drivers/hwmon/tmp108.c b/drivers/hwmon/tmp108.c
index bfbea6349a95f81fa79ed0d03735e3598b66efa1..1f36af2cd2d94f1b02a02539b1dc1092d0d06cac 100644 (file)
--- a/drivers/hwmon/tmp108.c
+++ b/drivers/hwmon/tmp108.c
@@ -13,6 +13,7 @@
 #include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/i2c.h>
+#include <linux/i3c/device.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
 #include <linux/regmap.h>
@@ -440,7 +441,39 @@ static struct i2c_driver tmp108_driver = {
        .id_table       = tmp108_i2c_ids,
 };
 
-module_i2c_driver(tmp108_driver);
+static const struct i3c_device_id p3t1085_i3c_ids[] = {
+       I3C_DEVICE(0x011b, 0x1529, NULL),
+       {}
+};
+MODULE_DEVICE_TABLE(i3c, p3t1085_i3c_ids);
+
+static int p3t1085_i3c_probe(struct i3c_device *i3cdev)
+{
+       struct device *dev = i3cdev_to_dev(i3cdev);
+       struct regmap *regmap;
+
+#ifdef CONFIG_REGMAP_I3C
+       regmap = devm_regmap_init_i3c(i3cdev, &tmp108_regmap_config);
+#else
+       regmap = ERR_PTR(-ENODEV);
+#endif
+
+       if (IS_ERR(regmap))
+               return dev_err_probe(dev, PTR_ERR(regmap),
+                                    "Failed to register i3c regmap\n");
+
+       return tmp108_common_probe(dev, regmap, "p3t1085_i3c");
+}
+
+static struct i3c_driver p3t1085_driver = {
+       .driver = {
+               .name = "p3t1085_i3c",
+       },
+       .probe = p3t1085_i3c_probe,
+       .id_table = p3t1085_i3c_ids,
+};
+
+module_i3c_i2c_driver(p3t1085_driver, &tmp108_driver)
 
 MODULE_AUTHOR("John Muir <john@jmuir.com>");
 MODULE_DESCRIPTION("Texas Instruments TMP108 temperature sensor driver");