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authorVille Syrjala <syrjala@sci.fi>2005-05-12 12:20:57 (GMT)
committerJaroslav Kysela <perex@suse.cz>2005-05-29 08:08:26 (GMT)
commit091bf4dcab10b083f944d4eafbe0c734786485fe (patch)
tree34e98a38fd1eb44ad01ee013e47dc525120a9851
parentdb68d15da00f64bef2c8c822baab42aff39ae774 (diff)
downloadlinux-091bf4dcab10b083f944d4eafbe0c734786485fe.tar.xz
[ALSA] maestro3: HP OmniBook HW volume button magic
Maestro3 driver Some HP OmniBook laptops (500 and 6000 at least) require some GPIO magic before the HW volume buttons work. This patch makes them work mostly. Something is still missing to make them work perfectly. However I have been unable to figure out what exactly. Signed-off-by: Ville Syrjala <syrjala@sci.fi> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/maestro3.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c
index c1c7eee..3690ea0 100644
--- a/sound/pci/maestro3.c
+++ b/sound/pci/maestro3.c
@@ -2392,6 +2392,18 @@ snd_m3_chip_init(m3_t *chip)
DISABLE_LEGACY);
pci_write_config_word(pcidev, PCI_LEGACY_AUDIO_CTRL, w);
+ /*
+ * Volume buttons on some HP OmniBook laptops (500 and 6000 at least)
+ * don't work correctly. This makes them work for the most part.
+ * Volume up and down buttons on the laptop side work perfectly.
+ * Fn+cursor_up (volme up) works, Fn+cursor_down (volume down) doesn't,
+ * Fn+F8 (mute) works acts as volume up.
+ */
+ outw(~(GPI_VOL_DOWN|GPI_VOL_UP), io + GPIO_MASK);
+ outw(inw(io + GPIO_DIRECTION) & ~(GPI_VOL_DOWN|GPI_VOL_UP), io + GPIO_DIRECTION);
+ outw((GPI_VOL_DOWN|GPI_VOL_UP), io + GPIO_DATA);
+ outw(0xffff, io + GPIO_MASK);
+
pci_read_config_dword(pcidev, PCI_ALLEGRO_CONFIG, &n);
n &= ~HV_BUTTON_FROM_GD;
n |= HV_CTRL_ENABLE | REDUCED_DEBOUNCE;