From: Harry Butterworth <heb1001@gmail.com>
Date: Tue, 14 Jun 2011 15:09:12 +0000 (+0800)
Subject: ALSA: ctxfi: Change PLL initialization code
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=030aba53ea361df2b44a292606c974ef48d438de;p=openwrt%2Fstaging%2Fblogic.git

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>
---

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))