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>
This commit is contained in:
Joaquín Ignacio Aramendía
Guenter Roeck
parent
fbb5a7fee0
commit
be144ee491
@ -19,6 +19,11 @@ out the EC registers and values to write to since the EC layout and model is
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different. Aya Neo devices preceding the AIR may not be supportable as the EC
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model is different and do not appear to have manual control capabilities.
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Some models have a toggle for changing the behaviour of the "Turbo/Silent"
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button of the device. It will change the key event that it triggers with
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a flip of the `tt_toggle` attribute. See below for boards that support this
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function.
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Supported devices
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-----------------
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@ -33,6 +38,11 @@ Currently the driver supports the following handhelds:
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- OneXPlayer mini AMD
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- OneXPlayer mini AMD PRO
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"Turbo/Silent" button behaviour toggle is only supported on:
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- AOK ZOE A1
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- OneXPlayer mini AMD (only with updated alpha BIOS)
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- OneXPlayer mini AMD PRO
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Sysfs entries
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-------------
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@ -49,3 +59,10 @@ pwm1
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Read Write. Read this attribute to see current duty cycle in the range [0-255].
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When pwm1_enable is set to "1" (manual) write any value in the range [0-255]
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to set fan speed.
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tt_toggle
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Read Write. Read this attribute to check the status of the turbo/silent
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button behaviour function. Write "1" to activate the switch and "0" to
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deactivate it. The specific keycodes and behaviour is specific to the device
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both with this function on and off. This attribute is attached to the platform
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driver and not to the hwmon driver (/sys/devices/platform/oxp-platform/tt_toggle)
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@ -47,15 +47,29 @@ enum oxp_board {
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aya_neo_air_pro,
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aya_neo_geek,
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oxp_mini_amd,
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oxp_mini_amd_a07,
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oxp_mini_amd_pro,
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};
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static enum oxp_board board;
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/* Fan reading and PWM */
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#define OXP_SENSOR_FAN_REG 0x76 /* Fan reading is 2 registers long */
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#define OXP_SENSOR_PWM_ENABLE_REG 0x4A /* PWM enable is 1 register long */
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#define OXP_SENSOR_PWM_REG 0x4B /* PWM reading is 1 register long */
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/* Turbo button takeover function
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* Older boards have different values and EC registers
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* for the same function
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*/
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#define OXP_OLD_TURBO_SWITCH_REG 0x1E
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#define OXP_OLD_TURBO_TAKE_VAL 0x01
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#define OXP_OLD_TURBO_RETURN_VAL 0x00
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#define OXP_TURBO_SWITCH_REG 0xF1
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#define OXP_TURBO_TAKE_VAL 0x40
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#define OXP_TURBO_RETURN_VAL 0x00
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static const struct dmi_system_id dmi_table[] = {
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{
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.matches = {
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@ -104,7 +118,7 @@ static const struct dmi_system_id dmi_table[] = {
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DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
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DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER mini A07"),
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},
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.driver_data = (void *)oxp_mini_amd,
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.driver_data = (void *)oxp_mini_amd_a07,
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},
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{
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.matches = {
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@ -156,6 +170,102 @@ static int write_to_ec(u8 reg, u8 value)
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return ret;
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}
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/* Turbo button toggle functions */
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static int tt_toggle_enable(void)
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{
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u8 reg;
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u8 val;
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switch (board) {
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case oxp_mini_amd_a07:
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reg = OXP_OLD_TURBO_SWITCH_REG;
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val = OXP_OLD_TURBO_TAKE_VAL;
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break;
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case oxp_mini_amd_pro:
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case aok_zoe_a1:
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reg = OXP_TURBO_SWITCH_REG;
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val = OXP_TURBO_TAKE_VAL;
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break;
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default:
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return -EINVAL;
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}
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return write_to_ec(reg, val);
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}
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static int tt_toggle_disable(void)
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{
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u8 reg;
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u8 val;
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switch (board) {
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case oxp_mini_amd_a07:
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reg = OXP_OLD_TURBO_SWITCH_REG;
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val = OXP_OLD_TURBO_RETURN_VAL;
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break;
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case oxp_mini_amd_pro:
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case aok_zoe_a1:
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reg = OXP_TURBO_SWITCH_REG;
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val = OXP_TURBO_RETURN_VAL;
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break;
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default:
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return -EINVAL;
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}
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return write_to_ec(reg, val);
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}
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/* Callbacks for turbo toggle attribute */
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static ssize_t tt_toggle_store(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count)
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{
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int rval;
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bool value;
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rval = kstrtobool(buf, &value);
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if (rval)
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return rval;
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if (value) {
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rval = tt_toggle_enable();
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if (rval)
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return rval;
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} else {
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rval = tt_toggle_disable();
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if (rval)
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return rval;
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}
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return count;
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}
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static ssize_t tt_toggle_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int retval;
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u8 reg;
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long val;
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switch (board) {
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case oxp_mini_amd_a07:
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reg = OXP_OLD_TURBO_SWITCH_REG;
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break;
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case oxp_mini_amd_pro:
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case aok_zoe_a1:
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reg = OXP_TURBO_SWITCH_REG;
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break;
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default:
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return -EINVAL;
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}
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retval = read_from_ec(reg, 1, &val);
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if (retval)
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return retval;
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return sysfs_emit(buf, "%d\n", !!val);
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}
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static DEVICE_ATTR_RW(tt_toggle);
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/* PWM enable/disable functions */
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static int oxp_pwm_enable(void)
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{
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return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, 0x01);
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@ -206,6 +316,7 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type,
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case aya_neo_air_pro:
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case aya_neo_geek:
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case oxp_mini_amd:
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case oxp_mini_amd_a07:
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*val = (*val * 255) / 100;
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break;
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case oxp_mini_amd_pro:
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@ -247,6 +358,7 @@ static int oxp_platform_write(struct device *dev, enum hwmon_sensor_types type,
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case aya_neo_air_pro:
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case aya_neo_geek:
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case oxp_mini_amd:
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case oxp_mini_amd_a07:
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val = (val * 100) / 255;
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break;
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case aok_zoe_a1:
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@ -274,6 +386,13 @@ static const struct hwmon_channel_info * const oxp_platform_sensors[] = {
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NULL,
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};
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static struct attribute *oxp_ec_attrs[] = {
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&dev_attr_tt_toggle.attr,
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NULL
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};
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ATTRIBUTE_GROUPS(oxp_ec);
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static const struct hwmon_ops oxp_ec_hwmon_ops = {
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.is_visible = oxp_ec_hwmon_is_visible,
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.read = oxp_platform_read,
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@ -291,6 +410,7 @@ static int oxp_platform_probe(struct platform_device *pdev)
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const struct dmi_system_id *dmi_entry;
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struct device *dev = &pdev->dev;
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struct device *hwdev;
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int ret;
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/*
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* Have to check for AMD processor here because DMI strings are the
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@ -305,6 +425,18 @@ static int oxp_platform_probe(struct platform_device *pdev)
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board = (enum oxp_board)(unsigned long)dmi_entry->driver_data;
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switch (board) {
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case aok_zoe_a1:
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case oxp_mini_amd_a07:
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case oxp_mini_amd_pro:
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ret = devm_device_add_groups(dev, oxp_ec_groups);
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if (ret)
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return ret;
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break;
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default:
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break;
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}
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hwdev = devm_hwmon_device_register_with_info(dev, "oxpec", NULL,
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&oxp_ec_chip_info, NULL);
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