From: Antheas Kapenekakis <lkml@antheas.dev>
To: platform-driver-x86@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
"Derek John Clark" <derekjohn.clark@gmail.com>,
"Joaquín Ignacio Aramendía" <samsagax@gmail.com>,
"Hans de Goede" <hansg@kernel.org>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
Eileen <eileen@one-netbook.com>,
"Antheas Kapenekakis" <lkml@antheas.dev>
Subject: [PATCH v1 1/2] platform/x86: oxpec: Fix Apex charge limit control
Date: Sun, 20 Sep 2026 21:04:37 +0200 [thread overview]
Message-ID: <20260920190438.3444923-1-lkml@antheas.dev> (raw)
The OneXPlayer Apex uses E5/E6 for battery bypass / charge limit, making
it the first device to deviate. This was verified by a user on Windows
with BIOS version 2.17 and later by running this kernel patch.
Drop X1_ from the MASK variables as they are common in all devices,
introduce a board enum for Apex, and make it use the new E5/E6 registers
for charge limit / bypass. Apply the same quirks as oxp_fly, since APEX
uses the same registers otherwise.
Fixes: 3385ea97c14d ("platform/x86: oxpec: Add support for OneXPlayer APEX")
Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
---
drivers/platform/x86/oxpec.c | 68 ++++++++++++++++++++++++++++--------
1 file changed, 53 insertions(+), 15 deletions(-)
diff --git a/drivers/platform/x86/oxpec.c b/drivers/platform/x86/oxpec.c
index 34bb17fca148..38c272995437 100644
--- a/drivers/platform/x86/oxpec.c
+++ b/drivers/platform/x86/oxpec.c
@@ -50,6 +50,7 @@ enum oxp_board {
oxp_x1,
oxp_g1_i,
oxp_g1_a,
+ oxp_apex,
};
static enum oxp_board board;
@@ -93,11 +94,14 @@ static struct device *oxp_dev;
#define OXP_X1_CHARGE_LIMIT_REG 0xA3 /* X1 charge limit (%) */
#define OXP_X1_CHARGE_INHIBIT_REG 0xA4 /* X1 bypass charging */
-#define OXP_X1_CHARGE_INHIBIT_MASK_AWAKE 0x01
+#define OXP_APEX_CHARGE_LIMIT_REG 0xE5 /* Apex charge limit (%) */
+#define OXP_APEX_CHARGE_INHIBIT_REG 0xE6 /* Apex bypass charging */
+
+#define OXP_CHARGE_INHIBIT_MASK_AWAKE 0x01
/* X1 Mask is 0x0A, F1Pro is 0x02 but the extra bit on the X1 does nothing. */
-#define OXP_X1_CHARGE_INHIBIT_MASK_OFF 0x02
-#define OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS (OXP_X1_CHARGE_INHIBIT_MASK_AWAKE | \
- OXP_X1_CHARGE_INHIBIT_MASK_OFF)
+#define OXP_CHARGE_INHIBIT_MASK_OFF 0x02
+#define OXP_CHARGE_INHIBIT_MASK_ALWAYS (OXP_CHARGE_INHIBIT_MASK_AWAKE | \
+ OXP_CHARGE_INHIBIT_MASK_OFF)
static const struct dmi_system_id dmi_table[] = {
{
@@ -154,7 +158,7 @@ static const struct dmi_system_id dmi_table[] = {
DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER APEX"),
},
- .driver_data = (void *)oxp_fly,
+ .driver_data = (void *)oxp_apex,
},
{
.matches = {
@@ -352,6 +356,7 @@ static umode_t tt_toggle_is_visible(struct kobject *kobj,
case oxp_x1:
case oxp_g1_i:
case oxp_g1_a:
+ case oxp_apex:
return attr->mode;
default:
break;
@@ -381,6 +386,7 @@ static ssize_t tt_toggle_store(struct device *dev,
case oxp_fly:
case oxp_mini_amd_pro:
case oxp_g1_a:
+ case oxp_apex:
reg = OXP_TURBO_SWITCH_REG;
mask = OXP_TURBO_TAKE_VAL;
break;
@@ -427,6 +433,7 @@ static ssize_t tt_toggle_show(struct device *dev,
case oxp_fly:
case oxp_mini_amd_pro:
case oxp_g1_a:
+ case oxp_apex:
reg = OXP_TURBO_SWITCH_REG;
mask = OXP_TURBO_TAKE_VAL;
break;
@@ -524,6 +531,7 @@ static bool oxp_psy_ext_supported(void)
case oxp_g1_i:
case oxp_g1_a:
case oxp_fly:
+ case oxp_apex:
return true;
default:
break;
@@ -537,12 +545,24 @@ static int oxp_psy_ext_get_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
+ u8 limit_reg, inhibit_reg;
long raw_val;
int ret;
+ switch (board) {
+ case oxp_apex:
+ limit_reg = OXP_APEX_CHARGE_LIMIT_REG;
+ inhibit_reg = OXP_APEX_CHARGE_INHIBIT_REG;
+ break;
+ default:
+ limit_reg = OXP_X1_CHARGE_LIMIT_REG;
+ inhibit_reg = OXP_X1_CHARGE_INHIBIT_REG;
+ break;
+ }
+
switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
- ret = read_from_ec(OXP_X1_CHARGE_LIMIT_REG, 1, &raw_val);
+ ret = read_from_ec(limit_reg, 1, &raw_val);
if (ret)
return ret;
if (raw_val < 0 || raw_val > 100)
@@ -550,14 +570,14 @@ static int oxp_psy_ext_get_prop(struct power_supply *psy,
val->intval = raw_val;
return 0;
case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
- ret = read_from_ec(OXP_X1_CHARGE_INHIBIT_REG, 1, &raw_val);
+ ret = read_from_ec(inhibit_reg, 1, &raw_val);
if (ret)
return ret;
- if ((raw_val & OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS) ==
- OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS)
+ if ((raw_val & OXP_CHARGE_INHIBIT_MASK_ALWAYS) ==
+ OXP_CHARGE_INHIBIT_MASK_ALWAYS)
val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
- else if ((raw_val & OXP_X1_CHARGE_INHIBIT_MASK_AWAKE) ==
- OXP_X1_CHARGE_INHIBIT_MASK_AWAKE)
+ else if ((raw_val & OXP_CHARGE_INHIBIT_MASK_AWAKE) ==
+ OXP_CHARGE_INHIBIT_MASK_AWAKE)
val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE_AWAKE;
else
val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
@@ -573,29 +593,41 @@ static int oxp_psy_ext_set_prop(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
+ u8 limit_reg, inhibit_reg;
long raw_val;
+ switch (board) {
+ case oxp_apex:
+ limit_reg = OXP_APEX_CHARGE_LIMIT_REG;
+ inhibit_reg = OXP_APEX_CHARGE_INHIBIT_REG;
+ break;
+ default:
+ limit_reg = OXP_X1_CHARGE_LIMIT_REG;
+ inhibit_reg = OXP_X1_CHARGE_INHIBIT_REG;
+ break;
+ }
+
switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
if (val->intval < 0 || val->intval > 100)
return -EINVAL;
- return write_to_ec(OXP_X1_CHARGE_LIMIT_REG, val->intval);
+ return write_to_ec(limit_reg, val->intval);
case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
switch (val->intval) {
case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
raw_val = 0;
break;
case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE_AWAKE:
- raw_val = OXP_X1_CHARGE_INHIBIT_MASK_AWAKE;
+ raw_val = OXP_CHARGE_INHIBIT_MASK_AWAKE;
break;
case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
- raw_val = OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS;
+ raw_val = OXP_CHARGE_INHIBIT_MASK_ALWAYS;
break;
default:
return -EINVAL;
}
- return write_to_ec(OXP_X1_CHARGE_INHIBIT_REG, raw_val);
+ return write_to_ec(inhibit_reg, raw_val);
default:
return -EINVAL;
}
@@ -656,6 +688,7 @@ static int oxp_pwm_enable(void)
case oxp_x1:
case oxp_g1_i:
case oxp_g1_a:
+ case oxp_apex:
return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL);
default:
return -EINVAL;
@@ -676,6 +709,7 @@ static int oxp_pwm_disable(void)
case oxp_x1:
case oxp_g1_i:
case oxp_g1_a:
+ case oxp_apex:
return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO);
default:
return -EINVAL;
@@ -696,6 +730,7 @@ static int oxp_pwm_read(long *val)
case oxp_x1:
case oxp_g1_i:
case oxp_g1_a:
+ case oxp_apex:
return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val);
default:
return -EOPNOTSUPP;
@@ -732,6 +767,7 @@ static int oxp_pwm_fan_speed(long *val)
case oxp_mini_amd_a07:
case oxp_mini_amd_pro:
case oxp_g1_a:
+ case oxp_apex:
return read_from_ec(OXP_SENSOR_FAN_REG, 2, val);
default:
return -EOPNOTSUPP;
@@ -764,6 +800,7 @@ static int oxp_pwm_input_write(long val)
case oxp_fly:
case oxp_mini_amd_pro:
case oxp_g1_a:
+ case oxp_apex:
return write_to_ec(OXP_SENSOR_PWM_REG, val);
default:
return -EOPNOTSUPP;
@@ -803,6 +840,7 @@ static int oxp_pwm_input_read(long *val)
case oxp_fly:
case oxp_mini_amd_pro:
case oxp_g1_a:
+ case oxp_apex:
default:
ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val);
if (ret)
base-commit: fd73f4a6659897191fa0d40695fe370925dd3780
--
2.55.0
next reply other threads:[~2026-09-20 19:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-20 19:04 Antheas Kapenekakis [this message]
2026-09-20 19:04 ` [PATCH v1 2/2] platform/x86: oxpec: Add OneXPlayer 3 quirk Antheas Kapenekakis
2026-09-20 22:29 ` Derek J. Clark
2026-09-20 22:28 ` [PATCH v1 1/2] platform/x86: oxpec: Fix Apex charge limit control Derek J. Clark
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