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| author | Karsten Wiese <fzu@wemgehoertderstaat.de> | 2008-04-22 12:52:45 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-04-24 12:00:39 +0200 |
| commit | 775c199e6af5e4212bfa7ebeadee09563c14694b (patch) | |
| tree | 4d62ec09ee333eadc028ff28ea3a64856eba073d /sound | |
| parent | 988f0664779674c7c06252a6d549eee8debd5d76 (diff) | |
| download | linux-3.10-775c199e6af5e4212bfa7ebeadee09563c14694b.tar.gz linux-3.10-775c199e6af5e4212bfa7ebeadee09563c14694b.tar.bz2 linux-3.10-775c199e6af5e4212bfa7ebeadee09563c14694b.zip | |
[ALSA] Don't set gpio mask register in snd_ice1712_gpio_write_bits()
Some calls to snd_ice1712_gpio_write() go wrong, if
snd_ice1712_gpio_write_bits() ran before and changed the gpio mask register.
Read the actual gpio value and combine it with the to be set bits in the cpu
instead.
Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/ice1712/ice1712.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/pci/ice1712/ice1712.h b/sound/pci/ice1712/ice1712.h index a3bea2247c7..3208901c740 100644 --- a/sound/pci/ice1712/ice1712.h +++ b/sound/pci/ice1712/ice1712.h @@ -438,10 +438,14 @@ int snd_ice1712_gpio_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_valu static inline void snd_ice1712_gpio_write_bits(struct snd_ice1712 *ice, unsigned int mask, unsigned int bits) { + unsigned val; + ice->gpio.direction |= mask; snd_ice1712_gpio_set_dir(ice, ice->gpio.direction); - snd_ice1712_gpio_set_mask(ice, ~mask); - snd_ice1712_gpio_write(ice, mask & bits); + val = snd_ice1712_gpio_read(ice); + val &= ~mask; + val |= mask & bits; + snd_ice1712_gpio_write(ice, val); } static inline int snd_ice1712_gpio_read_bits(struct snd_ice1712 *ice, |