ACPI: thinkpad-acpi: debug facility to emulate the rf switches
This code is required to keep the thinkpad-acpi maintainer sane, and it is disabled by default. Add a debug facility to simulate an rfkill hardware rocker switch, a bluetooth rfkill soft-switch, a WWAN rfkill soft-switch on thinkpads. The simulated switches obviously do not kill any radios in hardware or firmware (unlike the real one). They also don't issue deprecated proc events. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh
Len Brown
parent
e0b36fc5ef
commit
a73f30916e
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@ -192,6 +192,17 @@ config THINKPAD_ACPI
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If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
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config THINKPAD_ACPI_DEBUGFACILITIES
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bool "Maintainer debug facilities"
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depends on THINKPAD_ACPI
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default n
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---help---
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Enables extra stuff in the thinkpad-acpi which is completely useless
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for normal use. Read the driver source to find out what it does.
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Say N here, unless you were told by a kernel maintainer to do
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otherwise.
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config THINKPAD_ACPI_DEBUG
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bool "Verbose debug mode"
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depends on THINKPAD_ACPI
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@ -288,6 +288,16 @@ struct tpacpi_led_classdev {
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unsigned int led;
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};
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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static int dbg_wlswemul;
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static int tpacpi_wlsw_emulstate;
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static int dbg_bluetoothemul;
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static int tpacpi_bluetooth_emulstate;
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static int dbg_wwanemul;
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static int tpacpi_wwan_emulstate;
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#endif
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/****************************************************************************
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****************************************************************************
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*
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@ -1006,6 +1016,94 @@ static DRIVER_ATTR(version, S_IRUGO,
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/* --------------------------------------------------------------------- */
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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static void tpacpi_send_radiosw_update(void);
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/* wlsw_emulstate ------------------------------------------------------ */
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static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
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}
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static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
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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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if (parse_strtoul(buf, 1, &t))
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return -EINVAL;
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if (tpacpi_wlsw_emulstate != t) {
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tpacpi_wlsw_emulstate = !!t;
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tpacpi_send_radiosw_update();
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} else
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tpacpi_wlsw_emulstate = !!t;
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return count;
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}
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static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
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tpacpi_driver_wlsw_emulstate_show,
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tpacpi_driver_wlsw_emulstate_store);
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/* bluetooth_emulstate ------------------------------------------------- */
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static ssize_t tpacpi_driver_bluetooth_emulstate_show(
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struct device_driver *drv,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
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}
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static ssize_t tpacpi_driver_bluetooth_emulstate_store(
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struct device_driver *drv,
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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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if (parse_strtoul(buf, 1, &t))
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return -EINVAL;
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tpacpi_bluetooth_emulstate = !!t;
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return count;
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}
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static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
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tpacpi_driver_bluetooth_emulstate_show,
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tpacpi_driver_bluetooth_emulstate_store);
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/* wwan_emulstate ------------------------------------------------- */
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static ssize_t tpacpi_driver_wwan_emulstate_show(
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struct device_driver *drv,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
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}
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static ssize_t tpacpi_driver_wwan_emulstate_store(
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struct device_driver *drv,
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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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if (parse_strtoul(buf, 1, &t))
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return -EINVAL;
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tpacpi_wwan_emulstate = !!t;
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return count;
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}
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static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
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tpacpi_driver_wwan_emulstate_show,
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tpacpi_driver_wwan_emulstate_store);
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#endif
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/* --------------------------------------------------------------------- */
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static struct driver_attribute *tpacpi_driver_attributes[] = {
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&driver_attr_debug_level, &driver_attr_version,
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&driver_attr_interface_version,
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@ -1022,6 +1120,15 @@ static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
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i++;
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}
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (!res && dbg_wlswemul)
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res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
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if (!res && dbg_bluetoothemul)
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res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
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if (!res && dbg_wwanemul)
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res = driver_create_file(drv, &driver_attr_wwan_emulstate);
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#endif
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return res;
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}
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@ -1031,6 +1138,12 @@ static void tpacpi_remove_driver_attributes(struct device_driver *drv)
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for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
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driver_remove_file(drv, tpacpi_driver_attributes[i]);
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#ifdef THINKPAD_ACPI_DEBUGFACILITIES
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driver_remove_file(drv, &driver_attr_wlsw_emulstate);
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driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
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driver_remove_file(drv, &driver_attr_wwan_emulstate);
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#endif
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}
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/****************************************************************************
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@ -1216,6 +1329,12 @@ static struct attribute_set *hotkey_dev_attributes;
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static int hotkey_get_wlsw(int *status)
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{
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_wlswemul) {
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*status = !!tpacpi_wlsw_emulstate;
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return 0;
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}
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#endif
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if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
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return -EIO;
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return 0;
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@ -2222,6 +2341,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
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hotkey_source_mask, hotkey_poll_freq);
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#endif
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_wlswemul) {
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tp_features.hotkey_wlsw = 1;
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printk(TPACPI_INFO
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"radio switch emulation enabled\n");
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} else
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#endif
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/* Not all thinkpads have a hardware radio switch */
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if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
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tp_features.hotkey_wlsw = 1;
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@ -2656,6 +2782,12 @@ static int bluetooth_get_radiosw(void)
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if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
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return RFKILL_STATE_HARD_BLOCKED;
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_bluetoothemul)
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return (tpacpi_bluetooth_emulstate) ?
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RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
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#endif
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if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
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return -EIO;
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@ -2689,6 +2821,15 @@ static int bluetooth_set_radiosw(int radio_on, int update_rfk)
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&& radio_on)
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return -EPERM;
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_bluetoothemul) {
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tpacpi_bluetooth_emulstate = !!radio_on;
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if (update_rfk)
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bluetooth_update_rfk();
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return 0;
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}
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#endif
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if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
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return -EIO;
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if (radio_on)
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@ -2792,6 +2933,13 @@ 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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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_bluetoothemul) {
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tp_features.bluetooth = 1;
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printk(TPACPI_INFO
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"bluetooth switch emulation enabled\n");
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} else
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#endif
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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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@ -2890,6 +3038,12 @@ static int wan_get_radiosw(void)
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if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
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return RFKILL_STATE_HARD_BLOCKED;
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_wwanemul)
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return (tpacpi_wwan_emulstate) ?
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RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
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#endif
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if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
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return -EIO;
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@ -2923,6 +3077,15 @@ static int wan_set_radiosw(int radio_on, int update_rfk)
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&& radio_on)
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return -EPERM;
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_wwanemul) {
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tpacpi_wwan_emulstate = !!radio_on;
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if (update_rfk)
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wan_update_rfk();
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return 0;
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}
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#endif
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if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
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return -EIO;
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if (radio_on)
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@ -3024,6 +3187,13 @@ 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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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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if (dbg_wwanemul) {
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tp_features.wan = 1;
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printk(TPACPI_INFO
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"wwan switch emulation enabled\n");
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} else
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#endif
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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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@ -6701,6 +6871,26 @@ TPACPI_PARAM(brightness);
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TPACPI_PARAM(volume);
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TPACPI_PARAM(fan);
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#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
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module_param(dbg_wlswemul, uint, 0);
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MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
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module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
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MODULE_PARM_DESC(wlsw_state,
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"Initial state of the emulated WLSW switch");
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module_param(dbg_bluetoothemul, uint, 0);
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MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
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module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
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MODULE_PARM_DESC(bluetooth_state,
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"Initial state of the emulated bluetooth switch");
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module_param(dbg_wwanemul, uint, 0);
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MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
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module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
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MODULE_PARM_DESC(wwan_state,
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"Initial state of the emulated WWAN switch");
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#endif
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static void thinkpad_acpi_module_exit(void)
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{
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struct ibm_struct *ibm, *itmp;
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