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From: Tony Lindgren <tony@atomide.com>
To: "Arthur D." <spinal.by@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>, Merlijn Wajer <merlijn@wizzup.org>,
	sre@kernel.org, linux-pm@vger.kernel.org,
	linux-omap@vger.kernel.org
Subject: Re: [PATCH 01/15] power: supply: cpcap-battery: Fix battery full status reporting
Date: Sun, 15 Mar 2020 14:59:49 -0700	[thread overview]
Message-ID: <20200315215949.GK37466@atomide.com> (raw)
In-Reply-To: <op.0hjf7fb5hxa7s4@supervisor.net28>

* Arthur D. <spinal.by@gmail.com> [200315 20:51]:
> Now about the chosen limits. For some reason the charging is
> interrupted (and restarted after a while) when the following
> conditions are met:
> 1) the charging current is < 112 mA
> 2) the display backlight is off
> 
> This behaviour was observed in Maemo Leste with hildon-desktop
> running. I tested these patches for several days, so I picked up
> the parameters for optimal (from my point of view) work in practice
> taking into account the current "features" of Droid 4 drivers.
> 
> If we could somehow fix this behaviour (charging interruption),
> I'd reconsider the end of charge current value to be 50 mA.

Hmm well we do have two chargers, the usb charger and the
unknown inductive charger for the pins on the back.

It would be best to keep cpcap-battery.c independent of the
chargers to avoid depndencies as the chargers do usually start
charging briefly always when connected.

Maybe just adding something like below would be enough of a check:

static int
cpcap_battery_get_counter_rate(struct cpcap_battery_ddata *ddata,
			       int poll_time_ms);

And then based on the value being negative or positive you
would know if it's charging or not. I guess we could then
use this also for POWER_SUPPLY_PROP_CHARGE_NOW with poll_time_ms
value of 0. I think the charge counter is configure to poll
at 250 ms right now.

Regards,

Tony

  reply	other threads:[~2020-03-15 21:59 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-15 15:11 [PATCH 01/15] power: supply: cpcap-battery: Fix battery full status reporting Arthur Demchenkov
2020-03-15 15:11 ` [PATCH 02/15] power: supply: cpcap-battery: Improve battery full status detection Arthur Demchenkov
2020-03-15 16:46   ` Tony Lindgren
2020-03-15 15:11 ` [PATCH 03/15] power: supply: cpcap-battery: Fix battery low status reporting Arthur Demchenkov
2020-03-21 14:47   ` Tony Lindgren
2020-03-21 21:40     ` Arthur D.
2020-03-15 15:11 ` [PATCH 04/15] power: supply: cpcap-battery: Add charge_full property Arthur Demchenkov
2020-03-15 15:11 ` [PATCH 05/15] power: supply: cpcap-battery: Add charge_now property Arthur Demchenkov
2020-03-15 15:11 ` [PATCH 06/15] power: supply: cpcap-battery: Initialize with user provided data Arthur Demchenkov
2020-03-21 14:54   ` Tony Lindgren
2020-03-21 22:08     ` Arthur D.
2020-03-21 22:21       ` Tony Lindgren
2020-03-15 15:11 ` [PATCH 07/15] power: supply: cpcap-battery: Rewrite capacity reporting Arthur Demchenkov
2020-03-15 15:11 ` [PATCH 08/15] power: supply: cpcap-battery: Get rid of rough capacity percentage Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 09/15] power: supply: cpcap-battery: Increse low voltage bound Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 10/15] power: supply: cpcap-battery: Improve full status reporting Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 11/15] power: supply: cpcap-battery: Rename properties, variables and functions Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 12/15] power: supply: cpcap-battery: stabilize charge_full value Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 13/15] power: supply: cpcap-battery: Fine tune end of charge current Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 14/15] power: supply: cpcap-battery: Make it behave like bq27200 Arthur Demchenkov
2020-03-15 15:12 ` [PATCH 15/15] power: supply: cpcap-battery: Add rounding to capacity reporting Arthur Demchenkov
2020-03-15 18:58 ` [PATCH 01/15] power: supply: cpcap-battery: Fix battery full status reporting Pavel Machek
2020-03-15 19:19   ` Tony Lindgren
2020-03-15 20:51   ` Arthur D.
2020-03-15 21:59     ` Tony Lindgren [this message]
2020-03-16  1:30       ` Arthur D.
2020-03-16 16:02         ` Tony Lindgren

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