On Fri, Jul 08, 2016 at 09:49:37PM +0200, H. Nikolaus Schaller wrote:

+static int is31fl319x_microamp_to_cs(u32 microamp)
+{
+	switch (microamp) {
+	default:
+		WARN(1, "Invalid microamp setting");
+	case 20000: return 0;
+	case 15000: return 1;
+	case 10000: return 2;
+	case 5000:  return 3;
+	case 40000: return 4;
+	case 35000: return 5;
+	case 30000: return 6;
+	case 25000: return 7;
+	}
+}
+

...

+	regmap_write(is31->regmap, IS31FL319X_CONFIG2,
+		     is31fl319x_microamp_to_cs(aggregated_led_microamp) << 4 |
+		     is31->audio_gain_db / 3);

As I figured out by now, previous implementation of current setting (by
inline expression) was fine, this new one is just more obvious. So if
you wonder why it was replaced, I can say - "because of
misunderstanding". So switching back to that implementation is possible.

+static struct i2c_driver is31fl319x_driver = {
+	.driver   = {
+		.name    = "leds-is31fl319x",
+		.of_match_table = of_match_ptr(of_is31fl319x_leds_match),

Broken alignment :/ If this gets another iteration, i'll fix it.