rtc: abx80x: use a 'priv' struct for client data

This will allow additional data to be tracked, for future
improvements.

Signed-off-by: Jeremy Gebben <jgebben@sweptlaser.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index 2cefa67..9d49054 100644 (file)
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -94,6 +94,11 @@ static struct abx80x_cap abx80x_caps[] = {
        [ABX80X] = {.pn = 0}
 };
 
+struct abx80x_priv {
+       struct rtc_device *rtc;
+       struct i2c_client *client;
+};
+
 static int abx80x_is_rc_mode(struct i2c_client *client)
 {
        int flags = 0;
@@ -218,7 +223,8 @@ static int abx80x_rtc_set_time(struct device *dev, struct rtc_time *tm)
 static irqreturn_t abx80x_handle_irq(int irq, void *dev_id)
 {
        struct i2c_client *client = dev_id;
-       struct rtc_device *rtc = i2c_get_clientdata(client);
+       struct abx80x_priv *priv = i2c_get_clientdata(client);
+       struct rtc_device *rtc = priv->rtc;
        int status;
 
        status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
@@ -533,7 +539,7 @@ static int abx80x_probe(struct i2c_client *client,
                        const struct i2c_device_id *id)
 {
        struct device_node *np = client->dev.of_node;
-       struct rtc_device *rtc;
+       struct abx80x_priv *priv;
        int i, data, err, trickle_cfg = -EINVAL;
        char buf[7];
        unsigned int part = id->driver_data;
@@ -610,13 +616,18 @@ static int abx80x_probe(struct i2c_client *client,
        if (err)
                return err;
 
-       rtc = devm_rtc_allocate_device(&client->dev);
-       if (IS_ERR(rtc))
-               return PTR_ERR(rtc);
+       priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
+       if (priv == NULL)
+               return -ENOMEM;
+
+       priv->rtc = devm_rtc_allocate_device(&client->dev);
+       if (IS_ERR(priv->rtc))
+               return PTR_ERR(priv->rtc);
 
-       rtc->ops = &abx80x_rtc_ops;
+       priv->rtc->ops = &abx80x_rtc_ops;
+       priv->client = client;
 
-       i2c_set_clientdata(client, rtc);
+       i2c_set_clientdata(client, priv);
 
        if (client->irq > 0) {
                dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
@@ -649,7 +660,7 @@ static int abx80x_probe(struct i2c_client *client,
                return err;
        }
 
-       err = rtc_register_device(rtc);
+       err = rtc_register_device(priv->rtc);
 
        return err;
 }