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authorJoaquín Ignacio Aramendía <samsagax@gmail.com>2023-06-11 17:33:20 +0300
committerGuenter Roeck <linux@roeck-us.net>2023-06-18 06:49:18 +0300
commitbe144ee49127216b456da26f1a32b6ba281ac505 (patch)
tree474f77ee7a885a8668e185b3e8b965a3732ae6eb /drivers/hwmon
parentfbb5a7fee063fe97009ff28df8cd0e4af3202683 (diff)
downloadlinux-be144ee49127216b456da26f1a32b6ba281ac505.tar.xz
hwmon: (oxp-sensors) Add tt_toggle attribute on supported boards
OneXPlayer boards from the last generation (both for OneXPlayer and AOK ZOE brands) have a toggle in the EC to switch the "Turbo/Silent" button into a different keyboard event. Add a means to use that "Turbo button takeover" function and expose it to userspace in a custom sysfs `tt_toggle` attribute. It can be read to take the current state. Write 1|0 to activate the function. The specific keycode is dependent on the board but can be checked by running `evtest` utility. Newer BIOS on the OneXPlayer added this function aside from string changes. Add a board enum to differentiate it from the old OneXplayer Mini AMD BIOS. Currently known supported boards: - AOK ZOE A1 - OneXPlayer Mini AMD (only newer BIOS version supported) - OneXPlayer Mini Pro Signed-off-by: Joaquín Ignacio Aramendía <samsagax@gmail.com> Link: https://lore.kernel.org/r/20230611143332.40590-2-samsagax@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/oxp-sensors.c134
1 files changed, 133 insertions, 1 deletions
diff --git a/drivers/hwmon/oxp-sensors.c b/drivers/hwmon/oxp-sensors.c
index 0ec7588610ad..be36d38f13d9 100644
--- a/drivers/hwmon/oxp-sensors.c
+++ b/drivers/hwmon/oxp-sensors.c
@@ -47,15 +47,29 @@ enum oxp_board {
aya_neo_air_pro,
aya_neo_geek,
oxp_mini_amd,
+ oxp_mini_amd_a07,
oxp_mini_amd_pro,
};
static enum oxp_board board;
+/* Fan reading and PWM */
#define OXP_SENSOR_FAN_REG 0x76 /* Fan reading is 2 registers long */
#define OXP_SENSOR_PWM_ENABLE_REG 0x4A /* PWM enable is 1 register long */
#define OXP_SENSOR_PWM_REG 0x4B /* PWM reading is 1 register long */
+/* Turbo button takeover function
+ * Older boards have different values and EC registers
+ * for the same function
+ */
+#define OXP_OLD_TURBO_SWITCH_REG 0x1E
+#define OXP_OLD_TURBO_TAKE_VAL 0x01
+#define OXP_OLD_TURBO_RETURN_VAL 0x00
+
+#define OXP_TURBO_SWITCH_REG 0xF1
+#define OXP_TURBO_TAKE_VAL 0x40
+#define OXP_TURBO_RETURN_VAL 0x00
+
static const struct dmi_system_id dmi_table[] = {
{
.matches = {
@@ -104,7 +118,7 @@ static const struct dmi_system_id dmi_table[] = {
DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER mini A07"),
},
- .driver_data = (void *)oxp_mini_amd,
+ .driver_data = (void *)oxp_mini_amd_a07,
},
{
.matches = {
@@ -156,6 +170,102 @@ static int write_to_ec(u8 reg, u8 value)
return ret;
}
+/* Turbo button toggle functions */
+static int tt_toggle_enable(void)
+{
+ u8 reg;
+ u8 val;
+
+ switch (board) {
+ case oxp_mini_amd_a07:
+ reg = OXP_OLD_TURBO_SWITCH_REG;
+ val = OXP_OLD_TURBO_TAKE_VAL;
+ break;
+ case oxp_mini_amd_pro:
+ case aok_zoe_a1:
+ reg = OXP_TURBO_SWITCH_REG;
+ val = OXP_TURBO_TAKE_VAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return write_to_ec(reg, val);
+}
+
+static int tt_toggle_disable(void)
+{
+ u8 reg;
+ u8 val;
+
+ switch (board) {
+ case oxp_mini_amd_a07:
+ reg = OXP_OLD_TURBO_SWITCH_REG;
+ val = OXP_OLD_TURBO_RETURN_VAL;
+ break;
+ case oxp_mini_amd_pro:
+ case aok_zoe_a1:
+ reg = OXP_TURBO_SWITCH_REG;
+ val = OXP_TURBO_RETURN_VAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return write_to_ec(reg, val);
+}
+
+/* Callbacks for turbo toggle attribute */
+static ssize_t tt_toggle_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int rval;
+ bool value;
+
+ rval = kstrtobool(buf, &value);
+ if (rval)
+ return rval;
+
+ if (value) {
+ rval = tt_toggle_enable();
+ if (rval)
+ return rval;
+ } else {
+ rval = tt_toggle_disable();
+ if (rval)
+ return rval;
+ }
+ return count;
+}
+
+static ssize_t tt_toggle_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int retval;
+ u8 reg;
+ long val;
+
+ switch (board) {
+ case oxp_mini_amd_a07:
+ reg = OXP_OLD_TURBO_SWITCH_REG;
+ break;
+ case oxp_mini_amd_pro:
+ case aok_zoe_a1:
+ reg = OXP_TURBO_SWITCH_REG;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ retval = read_from_ec(reg, 1, &val);
+ if (retval)
+ return retval;
+
+ return sysfs_emit(buf, "%d\n", !!val);
+}
+
+static DEVICE_ATTR_RW(tt_toggle);
+
+/* PWM enable/disable functions */
static int oxp_pwm_enable(void)
{
return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, 0x01);
@@ -206,6 +316,7 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type,
case aya_neo_air_pro:
case aya_neo_geek:
case oxp_mini_amd:
+ case oxp_mini_amd_a07:
*val = (*val * 255) / 100;
break;
case oxp_mini_amd_pro:
@@ -247,6 +358,7 @@ static int oxp_platform_write(struct device *dev, enum hwmon_sensor_types type,
case aya_neo_air_pro:
case aya_neo_geek:
case oxp_mini_amd:
+ case oxp_mini_amd_a07:
val = (val * 100) / 255;
break;
case aok_zoe_a1:
@@ -274,6 +386,13 @@ static const struct hwmon_channel_info * const oxp_platform_sensors[] = {
NULL,
};
+static struct attribute *oxp_ec_attrs[] = {
+ &dev_attr_tt_toggle.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(oxp_ec);
+
static const struct hwmon_ops oxp_ec_hwmon_ops = {
.is_visible = oxp_ec_hwmon_is_visible,
.read = oxp_platform_read,
@@ -291,6 +410,7 @@ static int oxp_platform_probe(struct platform_device *pdev)
const struct dmi_system_id *dmi_entry;
struct device *dev = &pdev->dev;
struct device *hwdev;
+ int ret;
/*
* Have to check for AMD processor here because DMI strings are the
@@ -305,6 +425,18 @@ static int oxp_platform_probe(struct platform_device *pdev)
board = (enum oxp_board)(unsigned long)dmi_entry->driver_data;
+ switch (board) {
+ case aok_zoe_a1:
+ case oxp_mini_amd_a07:
+ case oxp_mini_amd_pro:
+ ret = devm_device_add_groups(dev, oxp_ec_groups);
+ if (ret)
+ return ret;
+ break;
+ default:
+ break;
+ }
+
hwdev = devm_hwmon_device_register_with_info(dev, "oxpec", NULL,
&oxp_ec_chip_info, NULL);