ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdrivers
Add support to sysfs to the wan and bluetooth subdrivers. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>hifive-unleashed-5.1
Henrique de Moraes Holschuh
Len Brown
parent
a0416420e2
commit
d3a6ade4f8
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@ -225,15 +225,35 @@ sysfs notes:
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keys mask, and allows one to modify it.
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Bluetooth -- /proc/acpi/ibm/bluetooth
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-------------------------------------
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Bluetooth
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---------
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This feature shows the presence and current state of a Bluetooth
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device. If Bluetooth is installed, the following commands can be used:
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procfs: /proc/acpi/ibm/bluetooth
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sysfs device attribute: bluetooth/enable
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This feature shows the presence and current state of a ThinkPad
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Bluetooth device in the internal ThinkPad CDC slot.
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Procfs notes:
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If Bluetooth is installed, the following commands can be used:
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echo enable > /proc/acpi/ibm/bluetooth
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echo disable > /proc/acpi/ibm/bluetooth
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Sysfs notes:
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If the Bluetooth CDC card is installed, it can be enabled /
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disabled through the "bluetooth/enable" thinkpad-acpi device
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attribute, and its current status can also be queried.
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enable:
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0: disables Bluetooth / Bluetooth is disabled
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1: enables Bluetooth / Bluetooth is enabled.
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Note: this interface will be probably be superseeded by the
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generic rfkill class.
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Video output control -- /proc/acpi/ibm/video
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--------------------------------------------
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@ -874,23 +894,42 @@ with EINVAL, try to set pwm1_enable to 1 and pwm1 to at least 128 (255
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would be the safest choice, though).
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EXPERIMENTAL: WAN -- /proc/acpi/ibm/wan
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---------------------------------------
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EXPERIMENTAL: WAN
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-----------------
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procfs: /proc/acpi/ibm/wan
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sysfs device attribute: wwan/enable
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This feature is marked EXPERIMENTAL because the implementation
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directly accesses hardware registers and may not work as expected. USE
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WITH CAUTION! To use this feature, you need to supply the
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experimental=1 parameter when loading the module.
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This feature shows the presence and current state of a WAN (Sierra
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Wireless EV-DO) device. If WAN is installed, the following commands can
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be used:
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This feature shows the presence and current state of a W-WAN (Sierra
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Wireless EV-DO) device.
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It was tested on a Lenovo Thinkpad X60. It should probably work on other
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Thinkpad models which come with this module installed.
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Procfs notes:
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If the W-WAN card is installed, the following commands can be used:
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echo enable > /proc/acpi/ibm/wan
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echo disable > /proc/acpi/ibm/wan
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It was tested on a Lenovo Thinkpad X60. It should probably work on other
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Thinkpad models which come with this module installed.
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Sysfs notes:
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If the W-WAN card is installed, it can be enabled /
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disabled through the "wwan/enable" thinkpad-acpi device
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attribute, and its current status can also be queried.
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enable:
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0: disables WWAN card / WWAN card is disabled
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1: enables WWAN card / WWAN card is enabled.
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Note: this interface will be probably be superseeded by the
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generic rfkill class.
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Multiple Commands, Module Parameters
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------------------------------------
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@ -1020,8 +1020,54 @@ static struct ibm_struct hotkey_driver_data = {
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* Bluetooth subdriver
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*/
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/* sysfs bluetooth enable ---------------------------------------------- */
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static ssize_t bluetooth_enable_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int status;
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status = bluetooth_get_radiosw();
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if (status < 0)
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return status;
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return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
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}
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static ssize_t bluetooth_enable_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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unsigned long t;
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int res;
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if (parse_strtoul(buf, 1, &t))
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return -EINVAL;
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res = bluetooth_set_radiosw(t);
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return (res) ? res : count;
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}
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static struct device_attribute dev_attr_bluetooth_enable =
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__ATTR(enable, S_IWUSR | S_IRUGO,
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bluetooth_enable_show, bluetooth_enable_store);
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/* --------------------------------------------------------------------- */
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static struct attribute *bluetooth_attributes[] = {
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&dev_attr_bluetooth_enable.attr,
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NULL
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};
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static const struct attribute_group bluetooth_attr_group = {
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.name = TPACPI_BLUETH_SYSFS_GROUP,
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.attrs = bluetooth_attributes,
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};
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static int __init bluetooth_init(struct ibm_init_struct *iibm)
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{
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int res;
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int status = 0;
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vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
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@ -1037,17 +1083,29 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
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str_supported(tp_features.bluetooth),
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status);
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if (tp_features.bluetooth &&
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!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
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/* no bluetooth hardware present in system */
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tp_features.bluetooth = 0;
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dbg_printk(TPACPI_DBG_INIT,
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"bluetooth hardware not installed\n");
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if (tp_features.bluetooth) {
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if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
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/* no bluetooth hardware present in system */
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tp_features.bluetooth = 0;
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dbg_printk(TPACPI_DBG_INIT,
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"bluetooth hardware not installed\n");
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} else {
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res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
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&bluetooth_attr_group);
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if (res)
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return res;
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}
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}
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return (tp_features.bluetooth)? 0 : 1;
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}
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static void bluetooth_exit(void)
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{
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sysfs_remove_group(&tpacpi_pdev->dev.kobj,
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&bluetooth_attr_group);
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}
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static int bluetooth_get_radiosw(void)
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{
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int status;
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@ -1080,6 +1138,7 @@ static int bluetooth_set_radiosw(int radio_on)
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return 0;
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}
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/* procfs -------------------------------------------------------------- */
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static int bluetooth_read(char *p)
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{
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int len = 0;
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@ -1119,14 +1178,61 @@ static struct ibm_struct bluetooth_driver_data = {
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.name = "bluetooth",
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.read = bluetooth_read,
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.write = bluetooth_write,
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.exit = bluetooth_exit,
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};
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/*************************************************************************
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* Wan subdriver
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*/
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/* sysfs wan enable ---------------------------------------------------- */
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static ssize_t wan_enable_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int status;
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status = wan_get_radiosw();
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if (status < 0)
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return status;
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return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
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}
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static ssize_t wan_enable_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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unsigned long t;
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int res;
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if (parse_strtoul(buf, 1, &t))
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return -EINVAL;
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res = wan_set_radiosw(t);
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return (res) ? res : count;
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}
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static struct device_attribute dev_attr_wan_enable =
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__ATTR(enable, S_IWUSR | S_IRUGO,
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wan_enable_show, wan_enable_store);
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/* --------------------------------------------------------------------- */
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static struct attribute *wan_attributes[] = {
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&dev_attr_wan_enable.attr,
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NULL
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};
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static const struct attribute_group wan_attr_group = {
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.name = TPACPI_WAN_SYSFS_GROUP,
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.attrs = wan_attributes,
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};
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static int __init wan_init(struct ibm_init_struct *iibm)
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{
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int res;
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int status = 0;
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vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
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@ -1140,17 +1246,29 @@ static int __init wan_init(struct ibm_init_struct *iibm)
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str_supported(tp_features.wan),
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status);
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if (tp_features.wan &&
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!(status & TP_ACPI_WANCARD_HWPRESENT)) {
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/* no wan hardware present in system */
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tp_features.wan = 0;
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dbg_printk(TPACPI_DBG_INIT,
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"wan hardware not installed\n");
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if (tp_features.wan) {
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if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
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/* no wan hardware present in system */
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tp_features.wan = 0;
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dbg_printk(TPACPI_DBG_INIT,
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"wan hardware not installed\n");
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} else {
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res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
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&wan_attr_group);
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if (res)
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return res;
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}
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}
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return (tp_features.wan)? 0 : 1;
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}
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static void wan_exit(void)
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{
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sysfs_remove_group(&tpacpi_pdev->dev.kobj,
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&wan_attr_group);
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}
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static int wan_get_radiosw(void)
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{
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int status;
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@ -1183,6 +1301,7 @@ static int wan_set_radiosw(int radio_on)
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return 0;
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}
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/* procfs -------------------------------------------------------------- */
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static int wan_read(char *p)
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{
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int len = 0;
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@ -1222,6 +1341,7 @@ static struct ibm_struct wan_driver_data = {
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.name = "wan",
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.read = wan_read,
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.write = wan_write,
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.exit = wan_exit,
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.flags.experimental = 1,
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};
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@ -278,6 +278,8 @@ static int beep_write(char *buf);
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* Bluetooth subdriver
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*/
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#define TPACPI_BLUETH_SYSFS_GROUP "bluetooth"
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enum {
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/* ACPI GBDC/SBDC bits */
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TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
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@ -551,6 +553,8 @@ static int volume_write(char *buf);
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* Wan subdriver
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*/
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#define TPACPI_WAN_SYSFS_GROUP "wwan"
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enum {
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/* ACPI GWAN/SWAN bits */
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TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
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