1 files changed, 45 insertions, 9 deletions

diff --git a/drivers/input/keyboard/tca6416-keypad.c b/drivers/input/keyboard/tca6416-keypad.c
index 00137bebcf9..dc983ab6c0a 100644
--- a/drivers/input/keyboard/tca6416-keypad.c
+++ b/drivers/input/keyboard/tca6416-keypad.c
@@ -29,6 +29,7 @@
 
 static const struct i2c_device_id tca6416_id[] = {
 	{ "tca6416-keys", 16, },
+	{ "tca6408-keys", 8, },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, tca6416_id);
@@ -46,8 +47,9 @@ struct tca6416_keypad_chip {
 	struct i2c_client *client;
 	struct input_dev *input;
 	struct delayed_work dwork;
-	u16 pinmask;
+	int io_size;
 	int irqnum;
+	u16 pinmask;
 	bool use_polling;
 	struct tca6416_button buttons[0];
 };
@@ -56,7 +58,9 @@ static int tca6416_write_reg(struct tca6416_keypad_chip *chip, int reg, u16 val)
 {
 	int error;
 
-	error = i2c_smbus_write_word_data(chip->client, reg << 1, val);
+	error = chip->io_size > 8 ?
+		i2c_smbus_write_word_data(chip->client, reg << 1, val) :
+		i2c_smbus_write_byte_data(chip->client, reg, val);
 	if (error < 0) {
 		dev_err(&chip->client->dev,
 			"%s failed, reg: %d, val: %d, error: %d\n",
@@ -71,7 +75,9 @@ static int tca6416_read_reg(struct tca6416_keypad_chip *chip, int reg, u16 *val)
 {
 	int retval;
 
-	retval = i2c_smbus_read_word_data(chip->client, reg << 1);
+	retval = chip->io_size > 8 ?
+		 i2c_smbus_read_word_data(chip->client, reg << 1) :
+		 i2c_smbus_read_byte_data(chip->client, reg);
 	if (retval < 0) {
 		dev_err(&chip->client->dev, "%s failed, reg: %d, error: %d\n",
 			__func__, reg, retval);
@@ -160,7 +166,7 @@ static void tca6416_keys_close(struct input_dev *dev)
 		disable_irq(chip->irqnum);
 }
 
-static int __devinit tca6416_setup_registers(struct tca6416_keypad_chip *chip)
+static int tca6416_setup_registers(struct tca6416_keypad_chip *chip)
 {
 	int error;
 
@@ -191,7 +197,7 @@ static int __devinit tca6416_setup_registers(struct tca6416_keypad_chip *chip)
 	return 0;
 }
 
-static int __devinit tca6416_keypad_probe(struct i2c_client *client,
+static int tca6416_keypad_probe(struct i2c_client *client,
 				   const struct i2c_device_id *id)
 {
 	struct tca6416_keys_platform_data *pdata;
@@ -207,7 +213,7 @@ static int __devinit tca6416_keypad_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (!pdata) {
 		dev_dbg(&client->dev, "no platform data\n");
 		return -EINVAL;
@@ -224,6 +230,7 @@ static int __devinit tca6416_keypad_probe(struct i2c_client *client,
 
 	chip->client = client;
 	chip->input = input;
+	chip->io_size = id->driver_data;
 	chip->pinmask = pdata->pinmask;
 	chip->use_polling = pdata->use_polling;
 
@@ -271,7 +278,8 @@ static int __devinit tca6416_keypad_probe(struct i2c_client *client,
 
 		error = request_threaded_irq(chip->irqnum, NULL,
 					     tca6416_keys_isr,
-					     IRQF_TRIGGER_FALLING,
+					     IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
 					     "tca6416-keypad", chip);
 		if (error) {
 			dev_dbg(&client->dev,
@@ -290,6 +298,7 @@ static int __devinit tca6416_keypad_probe(struct i2c_client *client,
 	}
 
 	i2c_set_clientdata(client, chip);
+	device_init_wakeup(&client->dev, 1);
 
 	return 0;
 
@@ -304,7 +313,7 @@ fail1:
 	return error;
 }
 
-static int __devexit tca6416_keypad_remove(struct i2c_client *client)
+static int tca6416_keypad_remove(struct i2c_client *client)
 {
 	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);
 
@@ -319,13 +328,40 @@ static int __devexit tca6416_keypad_remove(struct i2c_client *client)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int tca6416_keypad_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(chip->irqnum);
+
+	return 0;
+}
+
+static int tca6416_keypad_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(chip->irqnum);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(tca6416_keypad_dev_pm_ops,
+			 tca6416_keypad_suspend, tca6416_keypad_resume);
 
 static struct i2c_driver tca6416_keypad_driver = {
 	.driver = {
 		.name	= "tca6416-keypad",
+		.pm	= &tca6416_keypad_dev_pm_ops,
 	},
 	.probe		= tca6416_keypad_probe,
-	.remove		= __devexit_p(tca6416_keypad_remove),
+	.remove		= tca6416_keypad_remove,
 	.id_table	= tca6416_id,
 };