leds:pca963x: Add support for PCA9635 LED driver chip

supports 16 PWM-controlled LEDs

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

drivers/leds/leds-pca963x.c

@@ -12,7 +12,7 @@
  * directory of this archive for more details.
  *
  * LED driver for the PCA9633 I2C LED driver (7-bit slave address 0x62)
- * LED driver for the PCA9634 I2C LED driver (7-bit slave address set by hw.)
+ * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.)
  *
  * Note that hardware blinking violates the leds infrastructure driver
  * interface since the hardware only supports blinking all LEDs with the
@@ -52,6 +52,7 @@
 enum pca963x_type {
 	pca9633,
 	pca9634,
+	pca9635,
 };
 
 struct pca963x_chipdef {
@@ -74,6 +75,12 @@ static struct pca963x_chipdef pca963x_chipdefs[] = {
 		.ledout_base	= 0xc,
 		.n_leds		= 8,
 	},
+	[pca9635] = {
+		.grppwm		= 0x12,
+		.grpfreq	= 0x13,
+		.ledout_base	= 0x14,
+		.n_leds		= 16,
+	},
 };
 
 /* Total blink period in milliseconds */
@@ -84,6 +91,7 @@ static const struct i2c_device_id pca963x_id[] = {
 	{ "pca9632", pca9633 },
 	{ "pca9633", pca9633 },
 	{ "pca9634", pca9634 },
+	{ "pca9635", pca9635 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, pca963x_id);
@@ -107,7 +115,7 @@ struct pca963x_led {
 	struct work_struct work;
 	enum led_brightness brightness;
 	struct led_classdev led_cdev;
-	int led_num; /* 0 .. 7 potentially */
+	int led_num; /* 0 .. 15 potentially */
 	enum pca963x_cmd cmd;
 	char name[32];
 	u8 gdc;
@@ -321,6 +329,7 @@ static const struct of_device_id of_pca963x_match[] = {
 	{ .compatible = "nxp,pca9632", },
 	{ .compatible = "nxp,pca9633", },
 	{ .compatible = "nxp,pca9634", },
+	{ .compatible = "nxp,pca9635", },
 	{},
 };
 #else
@@ -375,9 +384,8 @@ static int pca963x_probe(struct i2c_client *client,
 	pca963x_chip->leds = pca963x;
 
 	/* Turn off LEDs by default*/
-	i2c_smbus_write_byte_data(client, chip->ledout_base, 0x00);
-	if (chip->n_leds > 4)
-		i2c_smbus_write_byte_data(client, chip->ledout_base + 1, 0x00);
+	for (i = 0; i < chip->n_leds / 4; i++)
+		i2c_smbus_write_byte_data(client, chip->ledout_base + i, 0x00);
 
 	for (i = 0; i < chip->n_leds; i++) {
 		pca963x[i].led_num = i;