[PATCH 3/4] asus-laptop: Support pega_accel accelerometer driver
From: Andy Ross <hidden>
Date: 2011-01-24 22:48:07
Also in:
platform-driver-x86
Subsystem:
asus notebooks and eeepc acpi/wmi extras drivers, the rest, x86 platform drivers · Maintainers:
Corentin Chary, Luke D. Jones, Denis Benato, Linus Torvalds, Hans de Goede, Ilpo Järvinen
Add device detecton for the ACPI accelerometer interface on Pegatron Lucid tablets. Signed-off-by: Andy Ross <redacted> --- drivers/platform/x86/asus-laptop.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index b397a4c..75c84f8 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c@@ -261,6 +261,7 @@ struct asus_laptop { bool have_rsts; bool have_pega_lucid; int lcd_state; + struct platform_device *pega_accel; struct rfkill *gps_rfkill;
@@ -1631,6 +1632,19 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus) return result; } +static void __devinit asus_pega_accel_init(struct asus_laptop *asus) +{ + /* Pegatron Lucid tablets expose their accelerometer through ACPI. + * Check for XLR{X,Y,Z} methods */ + if (acpi_check_handle(asus->handle, "XLRX", NULL) || + acpi_check_handle(asus->handle, "XLRY", NULL) || + acpi_check_handle(asus->handle, "XLRZ", NULL)) + return; + + asus->pega_accel = platform_device_register_simple("pega_accel", -1, + NULL, 0); +} + static bool asus_device_present; static int __devinit asus_acpi_add(struct acpi_device *device)
@@ -1681,6 +1695,8 @@ static int __devinit asus_acpi_add(struct acpi_device *device) goto fail_rfkill; asus->have_pega_lucid = asus_check_pega_lucid(asus); + if (asus->have_pega_lucid) + asus_pega_accel_init(asus); asus_device_present = true; return 0;
@@ -1704,6 +1720,9 @@ static int asus_acpi_remove(struct acpi_device *device, int type) { struct asus_laptop *asus = acpi_driver_data(device); + if (asus->pega_accel) + platform_device_unregister(asus->pega_accel); + asus_backlight_exit(asus); asus_rfkill_exit(asus); asus_led_exit(asus);
--
1.7.1