ALSA: wss-lib: move AD1845 frequency setting into wss-lib

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From: Linux Kernel Mailing List
Date: Thursday, March 26, 2009 - 12:18 pm

Gitweb:     http://git.kernel.org/linus/199f7978730a4bbd88038fd84212b30759579f1a
Commit:     199f7978730a4bbd88038fd84212b30759579f1a
Parent:     c59765042f53a79a7a65585042ff463b69cb248c
Author:     Krzysztof Helt <krzysztof.h1@wp.pl>
AuthorDate: Fri Jan 9 23:10:52 2009 +0100
Committer:  Takashi Iwai <tiwai@suse.de>
CommitDate: Sun Jan 11 13:09:05 2009 +0100

    ALSA: wss-lib: move AD1845 frequency setting into wss-lib
    
    This is required to allow the sscape driver
    to autodetect installed codec.
    
    Also, do not create a timer if detected codec
    has no hardware timer (e.g. AD1848).
    
    Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
    Cc: Rene Herman
    Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/isa/sscape.c      |  113 +++-------------------------------------------
 sound/isa/wss/wss_lib.c |   40 +++++++++++++++++
 2 files changed, 48 insertions(+), 105 deletions(-)

diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c
index 48a16d8..bc44916 100644
--- a/sound/isa/sscape.c
+++ b/sound/isa/sscape.c
@@ -129,9 +129,6 @@ enum GA_REG {
 #define DMA_8BIT  0x80
 
 
-#define AD1845_FREQ_SEL_MSB    0x16
-#define AD1845_FREQ_SEL_LSB    0x17
-
 enum card_type {
 	SSCAPE,
 	SSCAPE_PNP,
@@ -955,82 +952,6 @@ static int __devinit create_mpu401(struct snd_card *card, int devnum, unsigned l
 
 
 /*
- * Override for the CS4231 playback format function.
- * The AD1845 has much simpler format and rate selection.
- */
-static void ad1845_playback_format(struct snd_wss *chip,
-				   struct snd_pcm_hw_params *params,
-				   unsigned char format)
-{
-	unsigned long flags;
-	unsigned rate = params_rate(params);
-
-	/*
-	 * The AD1845 can't handle sample frequencies
-	 * outside of 4 kHZ to 50 kHZ
-	 */
-	if (rate > 50000)
-		rate = 50000;
-	else if (rate < 4000)
-		rate = 4000;
-
-	spin_lock_irqsave(&chip->reg_lock, flags);
-
-	/*
-	 * Program the AD1845 correctly for the playback stream.
-	 * Note that we do NOT need to ...
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