On 2018-08-07 11:07, Bjorn Andersson wrote:
On Mon 09 Jul 03:22 PDT 2018, Kiran Gunda wrote:
diff --git a/drivers/video/backlight/qcom-wled.c
b/drivers/video/backlight/qcom-wled.c
[..]
@@ -365,6 +434,15 @@ static int wled_configure(struct wled *wled,
struct device *dev)
cfg->num_strings = cfg->num_strings + 1;
+ string_len = of_property_count_elems_of_size(dev->of_node,
+ "qcom,enabled-strings",
+ sizeof(u32));
+ if (string_len > 0)
+ rc = of_property_read_u32_array(dev->of_node,
+ "qcom,enabled-strings",
+ wled->cfg.enabled_strings,
qcom,enabled-strings is listed as optional, but without it we will end
up with qcom,num-strings zeros in an array. Initialize
wled->cfg.enabled_strings to 0,1,2,3 and the driver will be backwards
compatible.
Correct. I will initialize the array in the next series.
I also think that if you do qcom,enabled-strings = <0, 1, 2>; there's
no
need to also specify qcom,num-strings = <3>; and we can just use
string_len for num_strings.
Correct. But I have kept this property to have the backward
compatibility with the
old driver (WLED3).
+ sizeof(u32));
+
return 0;
}
Regards,
Bjorn
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