From 030aba53ea361df2b44a292606c974ef48d438de Mon Sep 17 00:00:00 2001
From: Harry Butterworth <heb1001@gmail.com>
Date: Tue, 14 Jun 2011 23:09:12 +0800
Subject: 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>
---
sound/pci/ctxfi/cthw20k2.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
(limited to 'sound/pci/ctxfi')
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))
--
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