Actually after further reading of the datasheet and testing with
i2ctools it seems cap11xx_input_close() isn't putting the device in
DEEP SLEEP mode.
Any thoughts why?
On Tue, Jun 16, 2015 at 11:34 PM, Matt Ranostay <mranostay@xxxxxxxxx> wrote:
> On Tue, Jun 16, 2015 at 2:55 PM, Matt Ranostay <mranostay@xxxxxxxxx> wrote:
>> On Tue, Jun 16, 2015 at 2:26 PM, Daniel Mack <daniel@xxxxxxxxxx> wrote:
>>> On 06/16/2015 04:39 PM, Matt Ranostay wrote:
>>>> On Tue, Jun 16, 2015 at 12:54 AM, Jacek Anaszewski
>>>> <j.anaszewski@xxxxxxxxxxx> wrote:
>>>>> On 06/16/2015 04:46 AM, Matt Ranostay wrote:
>>>
>>>>>> + for_each_child_of_node(node, child) {
>>>>>> + led->cdev.name =
>>>>>> + of_get_property(child, "label", NULL) ? :
>>>>>> child->name;
>>>>>> + led->cdev.default_trigger =
>>>>>> + of_get_property(child, "linux,default-trigger",
>>>>>> NULL);
>>>>>> + led->cdev.flags = 0;
>>>>>> + led->cdev.brightness_set = cap11xx_led_set;
>>>>>> + led->cdev.max_brightness = 1;
>>>>>> + led->cdev.brightness = LED_OFF;
>>>>>> +
>>>>>> + error = of_property_read_u32(child, "reg", ®);
>>>>>> + if (error != 0 || reg >= priv->num_leds)
>>>>>> + continue;
>>>>>> + led->reg = reg;
>>>>>> + led->priv = priv;
>>>>>> +
>>>>>> + INIT_WORK(&led->work, cap11xx_led_work);
>>>>>> + error = devm_led_classdev_register(dev, &led->cdev);
>>>>>> + if (error < 0)
>>>>>> + return -EINVAL;
>>>>>> +
>>>>>> + schedule_work(&led->work);
>>>>>
>>>>>
>>>>> Why do you schedule work here? It should be done only in brightness_set op.
>>>>>
>>>> The LED needs to be set to initial turned off state, since there is no
>>>> Power ON/OFF register for the cap11xx devices.. So LEDs state would be
>>>> persistent across warm reboots.
>>>> Thoughts on how to do this better?
>>>
>>> What's wrong with this?
>>>
>>> regmap_write(priv->regmap, CAP11XX_REG_LED_OUTPUT_CONTROL, 0);
>>>
>>> Outside the loop, of course ...
>>>
>> Works for me, and prevents the workqueues tasks for blocking each
>> other in regmap_update_bits.
>>
>> However I just noticed the DLSLEEP state that cap11xx_input_close()
>> requests via cap11xx_set_sleep(true) could disable the LEDs. Need to
>> double check this later tonight...
>
> Seems deep sleep only effects the breath function. So never mind :)
>
>>
>>>
>>> Daniel
>>>
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