linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Angus Ainslie (Purism)" <angus@akkea.ca>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: angus.ainslie@puri.sm, Sebastian Reichel <sre@kernel.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Angus Ainslie (Purism)" <angus@akkea.ca>
Subject: [PATCH v3 4/4] power: bq25890_charger.c: Read back the current battery voltage
Date: Tue, 31 Jul 2018 10:43:16 -0600	[thread overview]
Message-ID: <20180731164316.32696-5-angus@akkea.ca> (raw)
In-Reply-To: <20180731164316.32696-1-angus@akkea.ca>

The part has the capability of reading the current battery voltage.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 drivers/power/supply/bq25890_charger.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
index 23b39da07e56..1aa7872ddeb0 100644
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -461,6 +461,15 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
 		val->intval = bq25890_find_val(bq->init_data.iterm, TBL_ITERM);
 		break;
 
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		ret = bq25890_field_read(bq, F_SYSV); /* read measured value */
+		if (ret < 0)
+			return ret;
+
+		/* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
+		val->intval = 2304000 + ret * 20000;
+		break;
+
 	default:
 		return -EINVAL;
 	}
@@ -669,6 +678,7 @@ static enum power_supply_property bq25890_power_supply_props[] = {
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
 	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 };
 
 static char *bq25890_charger_supplied_to[] = {
-- 
2.17.1


  parent reply	other threads:[~2018-07-31 16:43 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-23 13:51 [PATCH] bq25890_charger.c : add the BQ25896 part Angus Ainslie
2018-07-25  9:58 ` Krzysztof Kozlowski
2018-07-25 12:17   ` Angus Ainslie
2018-07-26  6:37     ` Krzysztof Kozlowski
2018-07-25 19:46   ` [PATCH v2 0/4] Add the BQ25896 charger IC Angus Ainslie (Purism)
2018-07-25 19:46     ` [PATCH v2 1/4] power: bq25890_charger.c: Add debugging output of failed initialization Angus Ainslie (Purism)
2018-07-26  6:44       ` Krzysztof Kozlowski
2018-07-25 19:46     ` [PATCH v2 2/4] power: bq25890_charger.c: Remove unused table Angus Ainslie (Purism)
2018-07-26  6:51       ` Krzysztof Kozlowski
2018-07-27 15:26         ` Angus Ainslie
2018-07-31  6:40           ` Krzysztof Kozlowski
2018-07-25 19:46     ` [PATCH v2 3/4] power: bq25890_charger.c: Add the BQ25896 part Angus Ainslie (Purism)
2018-07-26  6:56       ` Krzysztof Kozlowski
2018-07-25 19:46     ` [PATCH v2 4/4] power: bq25890_charger.c: Read back the current battery voltage Angus Ainslie (Purism)
2018-07-26  7:03       ` Krzysztof Kozlowski
2018-07-27 15:30         ` Angus Ainslie
2018-07-31 16:43   ` [PATCH v3 0/4] Add the BQ25896 charger IC Angus Ainslie (Purism)
2018-07-31 16:43     ` [PATCH v3 1/4] power: bq25890_charger.c: Add debugging output of failed initialization Angus Ainslie (Purism)
2018-07-31 16:57       ` Krzysztof Kozlowski
2018-07-31 18:16         ` Angus Ainslie
2018-07-31 16:43     ` [PATCH v3 2/4] power: bq25890_charger.c: Remove unused table entries Angus Ainslie (Purism)
2018-07-31 16:58       ` Krzysztof Kozlowski
2018-07-31 16:43     ` [PATCH v3 3/4] power: bq25890_charger.c: Add the BQ25896 part Angus Ainslie (Purism)
2018-07-31 17:00       ` Krzysztof Kozlowski
2018-07-31 16:43     ` Angus Ainslie (Purism) [this message]
2018-07-31 17:02       ` [PATCH v3 4/4] power: bq25890_charger.c: Read back the current battery voltage Krzysztof Kozlowski
2018-07-31 17:49   ` [PATCH v4 0/4] Add the BQ25896 charger IC Angus Ainslie (Purism)
2018-07-31 17:49     ` [PATCH v4 1/4] power: bq25890_charger.c: Add debugging output of failed initialization Angus Ainslie (Purism)
2018-07-31 17:49     ` [PATCH v4 2/4] power: bq25890_charger.c: Remove unused table entries Angus Ainslie (Purism)
2018-07-31 17:49     ` [PATCH v4 3/4] power: bq25890_charger.c: Add the BQ25896 part Angus Ainslie (Purism)
2018-07-31 17:49     ` [PATCH v4 4/4] power: bq25890_charger.c: Read back the current battery voltage Angus Ainslie (Purism)
2018-08-30 21:46     ` [PATCH v4 0/4] Add the BQ25896 charger IC Sebastian Reichel

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180731164316.32696-5-angus@akkea.ca \
    --to=angus@akkea.ca \
    --cc=angus.ainslie@puri.sm \
    --cc=krzk@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=sre@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).