#include <linux/uaccess.h>
#include <acpi/battery.h>
#include <acpi/video.h>
+#include <drm/drm_privacy_screen_driver.h>
#include "dual_accel_detect.h"
/* ThinkPad CMOS commands */
TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
+ TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
/* Reasons for waking up from S3/S4 */
TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
}
}
+static bool hotkey_notify_extended_hotkey(const u32 hkey)
+{
+ unsigned int scancode;
+
+ switch (hkey) {
+ case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
+ tpacpi_driver_event(hkey);
+ return true;
+ }
+
+ /* Extended keycodes start at 0x300 and our offset into the map
+ * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
+ * will be positive, but might not be in the correct range.
+ */
+ scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
+ if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
+ scancode < TPACPI_HOTKEY_MAP_LEN) {
+ tpacpi_input_send_key(scancode);
+ return true;
+ }
+
+ return false;
+}
+
static bool hotkey_notify_hotkey(const u32 hkey,
bool *send_acpi_ev,
bool *ignore_acpi_ev)
return adaptive_keyboard_hotkey_notify_hotkey(scancode);
case 3:
- /* Extended keycodes start at 0x300 and our offset into the map
- * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
- * will be positive, but might not be in the correct range.
- */
- scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
- if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
- scancode < TPACPI_HOTKEY_MAP_LEN) {
- tpacpi_input_send_key(scancode);
- return true;
- }
- break;
+ return hotkey_notify_extended_hotkey(hkey);
}
return false;
* LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
*/
-static int lcdshadow_state;
+static struct drm_privacy_screen *lcdshadow_dev;
+static acpi_handle lcdshadow_get_handle;
+static acpi_handle lcdshadow_set_handle;
-static int lcdshadow_on_off(bool state)
+static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv,
+ enum drm_privacy_screen_status state)
{
- acpi_handle set_shadow_handle;
int output;
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) {
- pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS");
+ if (WARN_ON(!mutex_is_locked(&priv->lock)))
return -EIO;
- }
- if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state))
+ if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state))
return -EIO;
- lcdshadow_state = state;
+ priv->hw_state = priv->sw_state = state;
return 0;
}
-static int lcdshadow_set(bool on)
+static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv)
{
- if (lcdshadow_state < 0)
- return lcdshadow_state;
- if (lcdshadow_state == on)
- return 0;
- return lcdshadow_on_off(on);
+ int output;
+
+ if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
+ return;
+
+ priv->hw_state = priv->sw_state = output & 0x1;
}
+static const struct drm_privacy_screen_ops lcdshadow_ops = {
+ .set_sw_state = lcdshadow_set_sw_state,
+ .get_hw_state = lcdshadow_get_hw_state,
+};
+
static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
{
- acpi_handle get_shadow_handle;
+ acpi_status status1, status2;
int output;
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) {
- lcdshadow_state = -ENODEV;
+ status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle);
+ status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle);
+ if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2))
return 0;
- }
- if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) {
- lcdshadow_state = -EIO;
+ if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
return -EIO;
- }
- if (!(output & 0x10000)) {
- lcdshadow_state = -ENODEV;
+
+ if (!(output & 0x10000))
return 0;
- }
- lcdshadow_state = output & 0x1;
+
+ lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev,
+ &lcdshadow_ops);
+ if (IS_ERR(lcdshadow_dev))
+ return PTR_ERR(lcdshadow_dev);
return 0;
}
+static void lcdshadow_exit(void)
+{
+ drm_privacy_screen_unregister(lcdshadow_dev);
+}
+
static void lcdshadow_resume(void)
{
- if (lcdshadow_state >= 0)
- lcdshadow_on_off(lcdshadow_state);
+ if (!lcdshadow_dev)
+ return;
+
+ mutex_lock(&lcdshadow_dev->lock);
+ lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state);
+ mutex_unlock(&lcdshadow_dev->lock);
}
static int lcdshadow_read(struct seq_file *m)
{
- if (lcdshadow_state < 0) {
+ if (!lcdshadow_dev) {
seq_puts(m, "status:\t\tnot supported\n");
} else {
- seq_printf(m, "status:\t\t%d\n", lcdshadow_state);
+ seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state);
seq_puts(m, "commands:\t0, 1\n");
}
char *cmd;
int res, state = -EINVAL;
- if (lcdshadow_state < 0)
+ if (!lcdshadow_dev)
return -ENODEV;
while ((cmd = strsep(&buf, ","))) {
if (state >= 2 || state < 0)
return -EINVAL;
- return lcdshadow_set(state);
+ mutex_lock(&lcdshadow_dev->lock);
+ res = lcdshadow_set_sw_state(lcdshadow_dev, state);
+ mutex_unlock(&lcdshadow_dev->lock);
+
+ drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
+
+ return res;
}
static struct ibm_struct lcdshadow_driver_data = {
.name = "lcdshadow",
+ .exit = lcdshadow_exit,
.resume = lcdshadow_resume,
.read = lcdshadow_read,
.write = lcdshadow_write,
if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
dytc_profile_refresh();
}
+
+ if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) {
+ enum drm_privacy_screen_status old_hw_state;
+ bool changed;
+
+ mutex_lock(&lcdshadow_dev->lock);
+ old_hw_state = lcdshadow_dev->hw_state;
+ lcdshadow_get_hw_state(lcdshadow_dev);
+ changed = lcdshadow_dev->hw_state != old_hw_state;
+ mutex_unlock(&lcdshadow_dev->lock);
+
+ if (changed)
+ drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
+ }
}
static void hotkey_driver_event(const unsigned int scancode)
projects / linux-2.6-microblaze.git / blobdiff