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authorHans de Goede <hdegoede@redhat.com>2015-06-16 17:27:51 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-06-19 02:10:59 +0300
commit3bd6bce36975f571cb47fa9d0aac9e06f94f4028 (patch)
treee7756fb2291dec0624ce70f7fc196eb54180691d /drivers/acpi/acpi_video.c
parentda882e5acbebd2aa8bb076521a5c5c9c70be324e (diff)
downloadlinux-3bd6bce36975f571cb47fa9d0aac9e06f94f4028.tar.xz
ACPI / video: Port to new backlight interface selection API
Most of the patch is moving the dmi quirks for forcing use of the acpi-video / the native backlight interface to video_detect.c. What remains is a nice cleanup. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_video.c')
-rw-r--r--drivers/acpi/acpi_video.c172
1 files changed, 7 insertions, 165 deletions
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index db4f353e1e5c..bba0d875334a 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -78,20 +78,6 @@ module_param(brightness_switch_enabled, bool, 0644);
static bool allow_duplicates;
module_param(allow_duplicates, bool, 0644);
-/*
- * For Windows 8 systems: used to decide if video module
- * should skip registering backlight interface of its own.
- */
-enum {
- NATIVE_BACKLIGHT_NOT_SET = -1,
- NATIVE_BACKLIGHT_OFF,
- NATIVE_BACKLIGHT_ON,
-};
-
-static int use_native_backlight_param = NATIVE_BACKLIGHT_NOT_SET;
-module_param_named(use_native_backlight, use_native_backlight_param, int, 0444);
-static int use_native_backlight_dmi = NATIVE_BACKLIGHT_NOT_SET;
-
static int disable_backlight_sysfs_if = -1;
module_param(disable_backlight_sysfs_if, int, 0444);
@@ -244,24 +230,6 @@ static int acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event);
static void acpi_video_switch_brightness(struct work_struct *work);
-static bool acpi_video_use_native_backlight(void)
-{
- if (use_native_backlight_param != NATIVE_BACKLIGHT_NOT_SET)
- return use_native_backlight_param;
- else if (use_native_backlight_dmi != NATIVE_BACKLIGHT_NOT_SET)
- return use_native_backlight_dmi;
- return acpi_osi_is_win8();
-}
-
-bool acpi_video_verify_backlight_support(void)
-{
- if (acpi_video_use_native_backlight() &&
- backlight_device_registered(BACKLIGHT_RAW))
- return false;
- return acpi_video_backlight_support();
-}
-EXPORT_SYMBOL_GPL(acpi_video_verify_backlight_support);
-
/* backlight device sysfs support */
static int acpi_video_get_brightness(struct backlight_device *bd)
{
@@ -422,18 +390,6 @@ static int __init video_set_bqc_offset(const struct dmi_system_id *d)
return 0;
}
-static int __init video_disable_native_backlight(const struct dmi_system_id *d)
-{
- use_native_backlight_dmi = NATIVE_BACKLIGHT_OFF;
- return 0;
-}
-
-static int __init video_enable_native_backlight(const struct dmi_system_id *d)
-{
- use_native_backlight_dmi = NATIVE_BACKLIGHT_ON;
- return 0;
-}
-
static int __init video_disable_backlight_sysfs_if(
const struct dmi_system_id *d)
{
@@ -488,123 +444,6 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
},
/*
- * These models have a working acpi_video backlight control, and using
- * native backlight causes a regression where backlight does not work
- * when userspace is not handling brightness key events. Disable
- * native_backlight on these to fix this:
- * https://bugzilla.kernel.org/show_bug.cgi?id=81691
- */
- {
- .callback = video_disable_native_backlight,
- .ident = "ThinkPad T420",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"),
- },
- },
- {
- .callback = video_disable_native_backlight,
- .ident = "ThinkPad T520",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"),
- },
- },
- {
- .callback = video_disable_native_backlight,
- .ident = "ThinkPad X201s",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"),
- },
- },
-
- /* The native backlight controls do not work on some older machines */
- {
- /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */
- .callback = video_disable_native_backlight,
- .ident = "HP ENVY 15 Notebook",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
- DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
- },
- },
-
- {
- .callback = video_disable_native_backlight,
- .ident = "SAMSUNG 870Z5E/880Z5E/680Z5E",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
- },
- },
- {
- .callback = video_disable_native_backlight,
- .ident = "SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"),
- },
- },
- {
- /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
- .callback = video_disable_native_backlight,
- .ident = "SAMSUNG 3570R/370R/470R/450R/510R/4450RV",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "3570R/370R/470R/450R/510R/4450RV"),
- },
- },
- {
- /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
- .callback = video_disable_native_backlight,
- .ident = "SAMSUNG 730U3E/740U3E",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
- },
- },
- {
- /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
- .callback = video_disable_native_backlight,
- .ident = "SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "900X3C/900X3D/900X3E/900X4C/900X4D"),
- },
- },
-
- {
- /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
- .callback = video_disable_native_backlight,
- .ident = "Dell XPS15 L521X",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
- },
- },
-
- /* Non win8 machines which need native backlight nevertheless */
- {
- /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
- .callback = video_enable_native_backlight,
- .ident = "Lenovo Ideapad Z570",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "102434U"),
- },
- },
- {
- /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
- .callback = video_enable_native_backlight,
- .ident = "Apple MacBook Pro 12,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
- },
- },
-
- /*
* Some machines have a broken acpi-video interface for brightness
* control, but still need an acpi_video_device_lcd_set_level() call
* on resume to turn the backlight power on. We Enable backlight
@@ -1831,7 +1670,7 @@ static int acpi_video_bus_register_backlight(struct acpi_video_bus *video)
acpi_video_run_bcl_for_osi(video);
- if (!acpi_video_verify_backlight_support())
+ if (acpi_video_get_backlight_type() != acpi_backlight_video)
return 0;
mutex_lock(&video->device_list_lock);
@@ -1980,20 +1819,23 @@ static int acpi_video_backlight_notify(struct notifier_block *nb,
{
struct backlight_device *backlight = bd;
struct acpi_video_bus *video;
+ enum acpi_backlight_type type;
- /* acpi_video_verify_backlight_support only cares about raw devices */
+ /* A raw bl (un)registering may change native <-> video */
if (backlight->props.type != BACKLIGHT_RAW)
return NOTIFY_DONE;
video = container_of(nb, struct acpi_video_bus, backlight_nb);
+ type = acpi_video_get_backlight_type();
switch (val) {
case BACKLIGHT_REGISTERED:
- if (!acpi_video_verify_backlight_support())
+ if (type != acpi_backlight_video)
acpi_video_bus_unregister_backlight(video);
break;
case BACKLIGHT_UNREGISTERED:
- acpi_video_bus_register_backlight(video);
+ if (type == acpi_backlight_video)
+ acpi_video_bus_register_backlight(video);
break;
}