diff options
| author | AceLan Kao <acelan.kao@canonical.com> | 2012-03-20 12:53:08 +0400 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2012-03-26 23:05:41 +0400 |
| commit | c87992d1fa51a6a3d8f0e980ca4d2bdec7e78a17 (patch) | |
| tree | c702643e69183fcc5cb5f5b8b4f1e429ff1366fb /drivers/platform/x86/asus-wmi.c | |
| parent | bde9e5098c121cfca6d9c7e3a26e6ae44a3c9632 (diff) | |
| download | linux-c87992d1fa51a6a3d8f0e980ca4d2bdec7e78a17.tar.xz | |
asus-wmi: add scalar board brightness adj. support
Some ASUS ET2012E/I All-in-One machines that use a scalar board
to control the brightness, and they only accept brightness up and down
command. So, I introduced a get_scalar_command() function to pass the
command to the scalar board through WMI.
Besides, we have to store the brightness value locally, for we need the
old value to know the brightness value is increasing or decreasing.
BTW, since there is no way to retrieve the actual brightness(it would be
a fixed value), and the max brightness value would be fixed to 1, so we
have to keep passing the brightness up/down command when we reached the
max brightness value or 0.
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/asus-wmi.c')
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 2b883470a9d0..eb114f8d39e7 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -784,7 +784,8 @@ static int asus_new_rfkill(struct asus_wmi *asus, arfkill->dev_id = dev_id; arfkill->asus = asus; - if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless) + if (dev_id == ASUS_WMI_DEVID_WLAN && + asus->driver->quirks->hotplug_wireless) *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type, &asus_rfkill_wlan_ops, arfkill); else @@ -895,7 +896,7 @@ static int asus_wmi_rfkill_init(struct asus_wmi *asus) if (result && result != -ENODEV) goto exit; - if (!asus->driver->hotplug_wireless) + if (!asus->driver->quirks->hotplug_wireless) goto exit; result = asus_setup_pci_hotplug(asus); @@ -1116,13 +1117,33 @@ static int read_brightness(struct backlight_device *bd) return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK; } +static u32 get_scalar_command(struct backlight_device *bd) +{ + struct asus_wmi *asus = bl_get_data(bd); + u32 ctrl_param = 0; + + if ((asus->driver->brightness < bd->props.brightness) || + bd->props.brightness == bd->props.max_brightness) + ctrl_param = 0x00008001; + else if ((asus->driver->brightness > bd->props.brightness) || + bd->props.brightness == 0) + ctrl_param = 0x00008000; + + asus->driver->brightness = bd->props.brightness; + + return ctrl_param; +} + static int update_bl_status(struct backlight_device *bd) { struct asus_wmi *asus = bl_get_data(bd); u32 ctrl_param; int power, err; - ctrl_param = bd->props.brightness; + if (asus->driver->quirks->scalar_panel_brightness) + ctrl_param = get_scalar_command(bd); + else + ctrl_param = bd->props.brightness; err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS, ctrl_param, NULL); @@ -1200,6 +1221,8 @@ static int asus_wmi_backlight_init(struct asus_wmi *asus) bd->props.power = power; backlight_update_status(bd); + asus->driver->brightness = bd->props.brightness; + return 0; } @@ -1622,8 +1645,8 @@ static int asus_wmi_add(struct platform_device *pdev) wdrv->platform_device = pdev; platform_set_drvdata(asus->platform_device, asus); - if (wdrv->quirks) - wdrv->quirks(asus->driver); + if (wdrv->detect_quirks) + wdrv->detect_quirks(asus->driver); err = asus_wmi_platform_init(asus); if (err) |