From: Lubomir Rintel <lkundrak@v3.sk>
To: Mark Brown <broonie@kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
James Cameron <quozl@laptop.org>,
Sebastian Reichel <sre@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Eric Miao <eric.y.miao@gmail.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Daniel Mack <daniel@zonque.org>,
Robert Jarzmik <robert.jarzmik@free.fr>,
linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
platform-driver-x86@vger.kernel.org, devel@driverdev.osuosl.org,
linux-pm@vger.kernel.org, Lubomir Rintel <lkundrak@v3.sk>
Subject: [PATCH 15/15] power: supply: olpc_battery: Add OLPC XO 1.75 support
Date: Wed, 10 Oct 2018 19:23:00 +0200 [thread overview]
Message-ID: <20181010172300.317643-16-lkundrak@v3.sk> (raw)
In-Reply-To: <20181010172300.317643-1-lkundrak@v3.sk>
The battery and the protocol are essentially the same as OLPC XO 1.5,
but the responses from the EC are LSB first.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/power/supply/olpc_battery.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c
index dde9863e5c4a..2adf33b9f641 100644
--- a/drivers/power/supply/olpc_battery.c
+++ b/drivers/power/supply/olpc_battery.c
@@ -56,6 +56,7 @@ struct olpc_battery_data {
struct power_supply *olpc_bat;
char bat_serial[17];
int new_proto;
+ int little_endian;
};
/*********************************************************************
@@ -321,6 +322,14 @@ static int olpc_bat_get_voltage_max_design(union power_supply_propval *val)
return ret;
}
+static s16 ecword_to_cpu(struct olpc_battery_data *data, u16 ec_byte)
+{
+ if (data->little_endian)
+ return le16_to_cpu(ec_byte);
+ else
+ return be16_to_cpu(ec_byte);
+}
+
/*********************************************************************
* Battery properties
*********************************************************************/
@@ -393,7 +402,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
+ val->intval = ecword_to_cpu(data, ec_word) * 9760L / 32;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
@@ -401,7 +410,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120;
+ val->intval = ecword_to_cpu(data, ec_word) * 15625L / 120;
break;
case POWER_SUPPLY_PROP_CAPACITY:
ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
@@ -432,21 +441,21 @@ static int olpc_bat_get_property(struct power_supply *psy,
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256;
+ val->intval = ecword_to_cpu(data, ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 10 / 256;
+ val->intval = (int)ecword_to_cpu(data, ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15;
+ val->intval = ecword_to_cpu(data, ec_word) * 6250 / 15;
break;
case POWER_SUPPLY_PROP_SERIAL_NUMBER:
ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
@@ -626,6 +635,10 @@ static int olpc_battery_probe(struct platform_device *pdev)
if (ecver[0] > 0x44) {
/* XO 1 or 1.5 with a new EC firmware. */
data->new_proto = 1;
+ } else if (of_find_compatible_node(NULL, NULL, "olpc,xo1.75-ec")) {
+ /* XO 1.75 */
+ data->new_proto = 1;
+ data->little_endian = 1;
} else if (ecver[0] < 0x44) {
/*
* We've seen a number of EC protocol changes; this driver
--
2.19.0
next prev parent reply other threads:[~2018-10-10 17:24 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 17:22 [PATCH 0/15] Add support for OLPC XO 1.75 Embedded Controller Lubomir Rintel
2018-10-10 17:22 ` [PATCH 01/15] power: supply: olpc_battery: correct the temperature units Lubomir Rintel
2018-10-19 13:00 ` Andy Shevchenko
2018-10-21 21:27 ` Sebastian Reichel
2018-11-02 22:16 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 02/15] Revert "platform/olpc: Make ec explicitly non-modular" Lubomir Rintel
2018-10-19 13:04 ` Andy Shevchenko
2018-11-02 22:16 ` Pavel Machek
2018-11-15 18:57 ` Lubomir Rintel
2018-10-10 17:22 ` [PATCH 03/15] dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings Lubomir Rintel
2018-10-17 19:38 ` Rob Herring
2018-11-04 12:26 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 04/15] Platform: OLPC: Remove an unused include Lubomir Rintel
2018-10-19 13:05 ` Andy Shevchenko
2018-11-13 13:59 ` Lubomir Rintel
2018-11-04 12:26 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 05/15] Platform: OLPC: Move OLPC config symbol out of x86 tree Lubomir Rintel
2018-10-19 13:09 ` Andy Shevchenko
2018-11-04 12:27 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 06/15] Platform: OLPC: Add XO-1.75 EC driver Lubomir Rintel
2018-10-19 16:06 ` Andy Shevchenko
2018-11-13 17:26 ` Lubomir Rintel
2018-11-13 22:06 ` James Cameron
2018-11-19 10:40 ` Pavel Machek
2018-11-19 13:25 ` Lubomir Rintel
2018-10-10 17:22 ` [PATCH 07/15] Platform: OLPC: Avoid a warning if the EC didn't register yet Lubomir Rintel
2018-10-19 13:11 ` Andy Shevchenko
2018-11-04 12:30 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 08/15] Platform: OLPC: Move EC-specific functionality out from x86 Lubomir Rintel
2018-10-19 13:36 ` Andy Shevchenko
2018-11-14 16:20 ` Lubomir Rintel
2018-11-04 12:31 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 09/15] Platform: OLPC: add a regulator for the DCON Lubomir Rintel
2018-10-19 13:39 ` Andy Shevchenko
2018-10-10 17:22 ` [PATCH 10/15] dt-bindings: olpc_battery: Add XO-1.5 battery Lubomir Rintel
2018-10-17 19:38 ` Rob Herring
2018-11-04 12:32 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 11/15] x86, olpc: Use a correct version when making up a battery node Lubomir Rintel
2018-10-19 13:43 ` Andy Shevchenko
2018-11-14 16:49 ` Lubomir Rintel
2018-11-04 12:34 ` Pavel Machek
2018-10-10 17:22 ` [PATCH 12/15] power: supply: olpc_battery: Use DT to get battery version Lubomir Rintel
2018-10-19 13:45 ` Andy Shevchenko
2018-11-15 18:33 ` Lubomir Rintel
2018-11-04 12:37 ` Pavel Machek
2018-11-15 18:36 ` Lubomir Rintel
2018-10-10 17:22 ` [PATCH 13/15] power: supply: olpc_battery: Move priv data to a struct Lubomir Rintel
2018-10-19 13:48 ` Andy Shevchenko
2018-11-04 14:37 ` Pavel Machek
2018-11-14 17:10 ` Lubomir Rintel
2018-10-10 17:22 ` [PATCH 14/15] power: supply: olpc_battery: Avoid using platform_info Lubomir Rintel
2018-10-19 13:50 ` Andy Shevchenko
2018-11-14 17:19 ` Lubomir Rintel
2018-11-04 14:39 ` Pavel Machek
2018-10-10 17:23 ` Lubomir Rintel [this message]
2018-10-19 13:55 ` [PATCH 15/15] power: supply: olpc_battery: Add OLPC XO 1.75 support Andy Shevchenko
2018-11-04 14:39 ` Pavel Machek
2018-10-10 19:26 ` [PATCH 0/15] Add support for OLPC XO 1.75 Embedded Controller Rob Herring
2018-10-11 10:42 ` Lubomir Rintel
2018-10-19 13:57 ` Andy Shevchenko
2018-10-23 17:03 ` Lubomir Rintel
2018-10-21 21:45 ` Sebastian Reichel
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