UA_PER_MA
itarg_ua = (current_ma * UA_PER_MA) / led->chan_count + 1;
led->flash_current_ma = min_t(u32, led->max_flash_current_ma, brightness / UA_PER_MA);
u32 current_ma = intensity / UA_PER_MA;
return (brightness * led->max_torch_current_ma * UA_PER_MA) / LED_FULL;
intensity->max = led->max_torch_current_ma * UA_PER_MA;
led->max_torch_current_ma = current_ua / UA_PER_MA;
led->max_flash_current_ma = current_ua / UA_PER_MA;
led->flash_current_ma = brightness->val / UA_PER_MA;