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>

2 files changed, 48 insertions, 105 deletions

diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c
index 48a16d8..bc449166 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 toggle the MCE bit because
-	 * the PLAYBACK_ENABLE bit of the Interface Configuration
-	 * register is set.
-	 * 
-	 * NOTE: We seem to need to write to the MSB before the LSB
-	 *       to get the correct sample frequency.
-	 */
-	snd_wss_out(chip, CS4231_PLAYBK_FORMAT, (format & 0xf0));
-	snd_wss_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8));
-	snd_wss_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate);
-
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-/*
- * Override for the CS4231 capture format function. 
- * The AD1845 has much simpler format and rate selection.
- */
-static void ad1845_capture_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 toggle the MCE bit because
-	 * the CAPTURE_ENABLE bit of the Interface Configuration
-	 * register is set.
-	 *
-	 * NOTE: We seem to need to write to the MSB before the LSB
-	 *       to get the correct sample frequency.
-	 */
-	snd_wss_out(chip, CS4231_REC_FORMAT, (format & 0xf0));
-	snd_wss_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8));
-	snd_wss_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate);
-
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-/*
  * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
  * is very much like a CS4231, with a few extra bits. We will
  * try to support at least some of the extra bits by overriding
@@ -1055,11 +976,6 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port,
 		unsigned long flags;
 		struct snd_pcm *pcm;
 
-#define AD1845_FREQ_SEL_ENABLE  0x08
-
-#define AD1845_PWR_DOWN_CTRL   0x1b
-#define AD1845_CRYS_CLOCK_SEL  0x1d
-
 /*
  * It turns out that the PLAYBACK_ENABLE bit is set
  * by the lowlevel driver ...
@@ -1074,7 +990,6 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port,
  */
 
 		if (sscape->type != SSCAPE_VIVO) {
-			int val;
 			/*
 			 * The input clock frequency on the SoundScape must
 			 * be 14.31818 MHz, because we must set this register
@@ -1082,22 +997,10 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port,
 			 */
 			snd_wss_mce_up(chip);
 			spin_lock_irqsave(&chip->reg_lock, flags);
-			snd_wss_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20);
+			snd_wss_out(chip, AD1845_CLOCK, 0x20);
 			spin_unlock_irqrestore(&chip->reg_lock, flags);
 			snd_wss_mce_down(chip);
 
-			/*
-			 * More custom configuration:
-			 * a) select "mode 2" and provide a current drive of 8mA
-			 * b) enable frequency selection (for capture/playback)
-			 */
-			spin_lock_irqsave(&chip->reg_lock, flags);
-			snd_wss_out(chip, CS4231_MISC_INFO,
-				    CS4231_MODE2 | 0x10);
-			val = snd_wss_in(chip, AD1845_PWR_DOWN_CTRL);
-			snd_wss_out(chip, AD1845_PWR_DOWN_CTRL,
-				    val | AD1845_FREQ_SEL_ENABLE);
-			spin_unlock_irqrestore(&chip->reg_lock, flags);
 		}
 
 		err = snd_wss_pcm(chip, 0, &pcm);
@@ -1113,11 +1016,13 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port,
 					    "for AD1845 chip\n");
 			goto _error;
 		}
-		err = snd_wss_timer(chip, 0, NULL);
-		if (err < 0) {
-			snd_printk(KERN_ERR "sscape: No timer device "
-					    "for AD1845 chip\n");
-			goto _error;
+		if (chip->hardware != WSS_HW_AD1848) {
+			err = snd_wss_timer(chip, 0, NULL);
+			if (err < 0) {
+				snd_printk(KERN_ERR "sscape: No timer device "
+						    "for AD1845 chip\n");
+				goto _error;
+			}
 		}
 
 		if (sscape->type != SSCAPE_VIVO) {
@@ -1128,8 +1033,6 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port,
 						    "MIDI mixer control\n");
 				goto _error;
 			}
-			chip->set_playback_format = ad1845_playback_format;
-			chip->set_capture_format = ad1845_capture_format;
 		}
 
 		strcpy(card->driver, "SoundScape");
diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 3d6c5f2..13299ae 100644
--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -646,6 +646,24 @@ static void snd_wss_playback_format(struct snd_wss *chip,
 			full_calib = 0;
 		}
 		spin_unlock_irqrestore(&chip->reg_lock, flags);
+	} else if (chip->hardware == WSS_HW_AD1845) {
+		unsigned rate = params_rate(params);
+
+		/*
+		 * Program the AD1845 correctly for the playback stream.
+		 * Note that we do NOT need to toggle the MCE bit because
+		 * the PLAYBACK_ENABLE bit of the Interface Configuration
+		 * register is set.
+		 *
+		 * NOTE: We seem to need to write to the MSB before the LSB
+		 *       to get the correct sample frequency.
+		 */
+		spin_lock_irqsave(&chip->reg_lock, flags);
+		snd_wss_out(chip, CS4231_PLAYBK_FORMAT, (pdfr & 0xf0));
+		snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
+		snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
+		full_calib = 0;
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
 	}
 	if (full_calib) {
 		snd_wss_mce_up(chip);
@@ -690,6 +708,24 @@ static void snd_wss_capture_format(struct snd_wss *chip,
 			full_calib = 0;
 		}
 		spin_unlock_irqrestore(&chip->reg_lock, flags);
+	} else if (chip->hardware == WSS_HW_AD1845) {
+		unsigned rate = params_rate(params);
+
+		/*
+		 * Program the AD1845 correctly for the capture stream.
+		 * Note that we do NOT need to toggle the MCE bit because
+		 * the PLAYBACK_ENABLE bit of the Interface Configuration
+		 * register is set.
+		 *
+		 * NOTE: We seem to need to write to the MSB before the LSB
+		 *       to get the correct sample frequency.
+		 */
+		spin_lock_irqsave(&chip->reg_lock, flags);
+		snd_wss_out(chip, CS4231_REC_FORMAT, (cdfr & 0xf0));
+		snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
+		snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
+		full_calib = 0;
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
 	}
 	if (full_calib) {
 		snd_wss_mce_up(chip);
@@ -1314,6 +1350,10 @@ static int snd_wss_probe(struct snd_wss *chip)
 		chip->image[CS4231_ALT_FEATURE_2] =
 			chip->hardware == WSS_HW_INTERWAVE ? 0xc2 : 0x01;
 	}
+	/* enable fine grained frequency selection */
+	if (chip->hardware == WSS_HW_AD1845)
+		chip->image[AD1845_PWR_DOWN] = 8;
+
 	ptr = (unsigned char *) &chip->image;
 	regnum = (chip->hardware & WSS_HW_AD1848_MASK) ? 16 : 32;
 	snd_wss_mce_down(chip);