diff options
| author | Harry Butterworth <heb1001@gmail.com> | 2011-06-14 23:09:12 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-06-16 07:28:57 +0200 |
| commit | 030aba53ea361df2b44a292606c974ef48d438de (patch) | |
| tree | 09d54469d0cc60b7eadf9fc1ee420087925c7974 /sound/pci | |
| parent | b3c705aa9e9147a30009bdf6ba853aa7fe138e58 (diff) | |
| download | lwn-030aba53ea361df2b44a292606c974ef48d438de.tar.gz lwn-030aba53ea361df2b44a292606c974ef48d438de.zip | |
ALSA: ctxfi: Change PLL initialization code
This is a reworked patch from Creative to change the PLL code to address
unreliable 44100Hz initialization.
Signed-off-by: Harry Butterworth <heb1001@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/ctxfi/cthw20k2.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/sound/pci/ctxfi/cthw20k2.c b/sound/pci/ctxfi/cthw20k2.c index 1aa083272703..d6c54b524bfa 100644 --- a/sound/pci/ctxfi/cthw20k2.c +++ b/sound/pci/ctxfi/cthw20k2.c @@ -1316,21 +1316,18 @@ static int hw_pll_init(struct hw *hw, unsigned int rsr) pllenb = 0xB; hw_write_20kx(hw, PLL_ENB, pllenb); - pllctl = 0x20D00000; - set_field(&pllctl, PLLCTL_FD, 16 - 4); + pllctl = 0x20C00000; + set_field(&pllctl, PLLCTL_B, 0); + set_field(&pllctl, PLLCTL_FD, 48000 == rsr ? 16 - 4 : 147 - 4); + set_field(&pllctl, PLLCTL_RD, 48000 == rsr ? 1 - 1 : 10 - 1); hw_write_20kx(hw, PLL_CTL, pllctl); mdelay(40); + pllctl = hw_read_20kx(hw, PLL_CTL); - set_field(&pllctl, PLLCTL_B, 0); - if (48000 == rsr) { - set_field(&pllctl, PLLCTL_FD, 16 - 2); - set_field(&pllctl, PLLCTL_RD, 1 - 1); /* 3000*16/1 = 48000 */ - } else { /* 44100 */ - set_field(&pllctl, PLLCTL_FD, 147 - 2); - set_field(&pllctl, PLLCTL_RD, 10 - 1); /* 3000*147/10 = 44100 */ - } + set_field(&pllctl, PLLCTL_FD, 48000 == rsr ? 16 - 2 : 147 - 2); hw_write_20kx(hw, PLL_CTL, pllctl); mdelay(40); + for (i = 0; i < 1000; i++) { pllstat = hw_read_20kx(hw, PLL_STAT); if (get_field(pllstat, PLLSTAT_PD)) |