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>

1 files changed, 13 insertions, 5 deletions

diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c
index 82589c0a5689..4438be9980a6 100644
--- a/drivers/leds/leds-pca963x.c
+++ b/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;